Some standard content:
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
GB50040—96
Code for design of dynamic machine foundation
Code for design of dynamic machine foundation
1996—07—22
1997—01—01
State Bureau of Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering Construction Standard Full-text Information System
Jointly Issued
Engineering Construction Standard Full-text Information SystemwwW.bzxz.Net
National Standard of the People's Republic of China
Code for design of dynamic machine foundation
Code for design of dynamic
machinefoundation
GB50040-96
Editor department: Ministry of Machinery Industry of the People's Republic of ChinaApproval department: Ministry of Construction of the People's Republic of ChinaEffective date: January 1, 1997
Engineering construction standard full text information system
Engineering construction standard full text information system
Notice on the release of national standards
"Design specification for dynamic machinery foundation"
Jianbiao [1996] No. 428
According to the requirements of the State Planning Commission's document No. Jizong (1987) 2390, the "Design specification for dynamic machinery foundation" jointly revised by the Ministry of Machinery Industry and relevant departments has been reviewed by relevant departments. The "Design specification for dynamic machinery foundation" GB50040-96 is now approved as a mandatory national standard and will be implemented on January 1, 1997. The original national standard "Design specification for dynamic machinery foundation" GBJ40-79 will be abolished at the same time. This standard is managed by the Ministry of Machinery Industry, and the Ministry of Machinery Industry Design Institute is responsible for specific interpretation and other work. The Ministry of Construction Standards and Quotas Research Institute is responsible for organizing the publication. Ministry of Construction of the People's Republic of China
July 22, 1996
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Terms and Symbols
Basic Design Provisions
General Provisions
*+.++..++++..+++.+
Calculation Provisions for Foundations and Bases
Dynamic Characteristics Parameters of Foundations
Piston Compressor Foundations
General Provisions
Construction Requirements
Dynamic Calculation
Combined Foundation
Simplified Calculation
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Steam turbine and motor foundation
General provisions
Dynamic calculation of frame foundation
Bearing capacity calculation of frame foundation
Design of low-speed motor foundation
Turbine compressor foundation·
General provisions
Construction requirements
Dynamic calculation
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Bearing capacity calculation of frame foundation
Crusher and mill foundation·
7.1 Crusher foundation
Engineering construction standards Full-text information system
（45）
（47）
Engineering construction standard full-text information system
7.2 Grinding mill foundation
8 Impact machine foundation
Forging hammer foundation.
Drop hammer foundation.
Hot die forging press foundation
General provisions
Construction requirements·
Dynamic calculation·
Metal cutting machine tool foundation
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
Appendix G
Effect of low-frequency machine and impact machine vibration on factory building structure Anchor piles (Rod) foundation design
Dynamic calculation of frame foundation
Strength calculation of circular cone shell forging hammer foundation and calculation of structural ground vibration attenuation
Calculation of damped dynamic coefficient nmx value of press foundation Explanation of terms used in this specification
Additional explanation
Engineering 2 Construction Standard Full-text Information System
(63)
(63)
(63)
Engineering Construction Standard Full-text Information System
This specification is formulated in order to implement the state's technical and economic policies in the design of power machine foundations, ensure the quality of the project, reasonably select relevant power parameters and foundation forms, and achieve advanced technology, economic rationality, safety and applicability. 1.0.2
2This specification is applicable to the foundation design of the following power machines: (1) piston compressors;
(2) steam turbine units and motors,
(3) turbo compressors;
(4) crushers and mills;
(5) impact machines (forging hammers, drop hammers);
(6) hot die forging presses,
(7) metal cutting machine tools.
This specification is not applicable to the foundation design of power machines on floors. 1.0.3
In addition to adopting this specification, the design of power machine foundations shall also comply with the provisions of relevant current national standards and specifications.
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
2Terms and symbols
foundation set
General term for power machine foundations and the machines, ancillary equipment and fill on the foundations. 2.1.2
equivalentload
equivalentload
static load equivalent to the dynamic load acting on the original vibration system for the convenience of analysis.
3frame type foundationframe type foundation2.1.3
foundation composed of the top beam, column and bottom plate. 2.1.4wall type foundationwall type foundationfoundation composed of the top plate, vertical and horizontal walls and bottom plate. 2.1.5stiffness of subsoilthe ability of the foundation to resist deformation, the value of which is the ratio of the force (torque) applied to the foundation to the linear displacement (angular displacement) caused by it. No.
1action and action response
P.—vertical disturbance force of the machine;
Pxhorizontal disturbance force of the machine,
P——the design value of the average static pressure on the bottom surface of the foundation; M. —rotational disturbance moment of the machine,
M.Torsional disturbance moment of the machine;
Az--vertical vibration line displacement at the center of gravity of the basis group (including the foundation and the machine accessories and soil on the foundation);
Ax--horizontal vibration line displacement at the center of gravity of the basis group or the foundation component; Engineering 2 Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
A. —rotational vibration angular displacement of the foundation,
A--torsional vibration angular displacement of the foundation;
Ax--vertical vibration line displacement of the top surface control point of the foundation under the horizontal disturbance force Px, disturbance moment M. and vertical disturbance force P, eccentric action; Ax
The top surface control point of the foundation is under the horizontal disturbance force Px, disturbance moment M. and vertical disturbance force P, horizontal vibration linear displacement under eccentric action; circular frequency of machine disturbance force;
vertical natural circular frequency of basis set;
Onx——horizontal natural circular frequency of basis set; On
rotational natural circular frequency of basis set;
torsion natural circular frequency of basis set;
first vibration mode natural circular frequency of basis set horizontal rotational coupled vibration;
second vibration mode natural circular frequency of basis set horizontal rotational coupled vibration, a-—foundation vibration acceleration;
V foundation vibration velocity.
2. Calculation index
Cz——compression stiffness coefficient of natural foundation;
C. —Bending stiffness coefficient of natural foundation;
Cx—shear stiffness coefficient of natural foundation; C—torsional stiffness coefficient of natural foundation;
C——equivalent compressive stiffness coefficient of soil at pile tip; Cpr——equivalent shear stiffness coefficient of each layer of soil around the pile; —compressive stiffness of natural foundation;
K. ——bending stiffness of natural foundation;
Kx——shear stiffness of natural foundation;
K,—torsional stiffness of natural foundation;
Kz—compressive stiffness of pile foundation;
Kp——bending stiffness of pile foundation;
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Kx——shear stiffness of pile foundation;
Kp—torsional stiffness of pile foundation;
—vertical damping ratio of natural foundation;
-damping ratio of the first vibration mode of horizontal rotation coupled vibration of natural foundation; horizontal rotation of natural foundation
——damping ratio of the second vibration mode of rotational coupled vibration; S——torsional damping ratio of natural foundation;
-vertical damping ratio of pile foundation;
damping ratio of the first vibration mode of horizontal rotational coupled vibration of pile foundation;
damping ratio of the second vibration mode of horizontal rotational coupled vibration of pile foundation,
-torsional damping ratio of pile foundation;
f—standard value of foundation bearing capacity;
yu—design value of foundation bearing capacity;
[A]——allowable vibration linear displacement of foundation, [V]——allowable vibration velocity of foundation;
[α]——allowable vibration acceleration of foundation; m-
mass of a basis set.
3 Geometric parameters
Foundation bottom area;
A,—cross-sectional area of the pile,
1—moment of inertia of the foundation bottom surface through its centroidal axis; J—moment of inertia of the basis group through its centroidal axis; Iz—polar moment of inertia of the foundation bottom surface through its centroidal axis; J,—polar moment of inertia of the basis group through its centroidal axis; h1—distance from the centroid of the basis group to the foundation plane, h2—distance from the centroid of the basis group to the foundation bottom surface. 2.2.4 Calculation coefficients and others
——dynamic reduction coefficient of foundation bearing capacity, α——increase coefficient of foundation compressive stiffness due to foundation burial depth; Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
——increase coefficient of foundation shear, bending and torsional stiffness due to foundation burial depth Oxo
——increase coefficient of vertical damping ratio due to foundation burial depth; βx——increase coefficient of horizontal rotational coupled vibration damping ratio due to foundation depth,
%——foundation depth ratio.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Basic Design Provisions
3.1 General Provisions
1 The following information should be obtained during foundation design: 3.1.1
(1) The model, speed, power, specifications and outline dimension drawings of the machine; (2) The deadweight and center of gravity position of the machine;
(3) The outline drawing of the machine base, auxiliary equipment, pipeline location and the size of pits, trenches and holes, as well as the thickness of the grouting layer, the location of anchor bolts and embedded parts, etc.; (4) The disturbing force and disturbing moment of the machine and their direction; (5) The location of the foundation and the foundation drawings of the adjacent buildings; (6) The geological survey data of the construction site and the foundation dynamic test data. 3.1.2 The foundation of the power machine should be separated from the foundation, superstructure and concrete floor of the building.
3.1.3 When the pipeline is connected to the machine and generates large vibration, vibration isolation measures should be adopted at the connection between the pipeline and the building.
3.1.4 When the vibration of the power machine foundation has a harmful effect on nearby personnel, precision equipment, instruments, factory production and buildings, vibration isolation measures should be adopted. The impact of the vibration of low-frequency machines and impact machines on the factory structure should comply with the provisions of Appendix A of this code.
The design of the power machine foundation shall not produce harmful uneven settlement. 3.1.6
The power machine foundation and the foundation of the adjacent building are placed on the natural foundation. When the construction requirements can be met, the burial depth of the two may not be at the same elevation, but after the foundation is built, the backfill soil of the base elevation difference must be compacted. 3.1.7 When the power machine foundation is set on rock with good integrity, in addition to the forging hammer and drop hammer foundation, the anchor pile (rod) foundation can be used, and its foundation design shall comply with the provisions of Appendix B of this code.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3.1.8 The distance from the edge of the power machine base to the edge of the foundation should not be less than 100mm. Except for the forging hammer foundation, a secondary grouting layer should be reserved under the machine base, and its thickness should not be less than 25mm. The secondary grouting layer should be filled and compacted with micro-expansion concrete after the equipment is installed in place and initially adjusted, and combined with the concrete foundation surface. 3.1.9 The setting of the anchor bolts of the power machine foundation shall comply with the following provisions: (1) The depth of the anchor bolt with a hook shall not be less than 20 times the bolt diameter, and the embedding depth of the anchor bolt with an anchor plate shall not be less than 15 times the bolt diameter; (2) The distance between the anchor bolt axis and the foundation edge shall not be less than 4 times the bolt diameter, and the distance between the reserved hole edge and the foundation edge shall not be less than 100mm. If the requirements cannot be met, strengthening measures shall be taken;
(3) The net thickness of the concrete under the bottom surface of the embedded anchor bolt shall not be less than 50mm. When it is a reserved hole, the net thickness of the concrete under the bottom surface of the hole shall not be less than 100mm. 3.1.10 The power machine foundation should adopt an integral or assembled integral concrete structure. 3.1.11 The concrete strength grade of the power machine foundation should not be lower than C15. For large block or wall foundations designed according to structural requirements or not directly subjected to impact force, the concrete strength grade can be C10.
3.1.12 Grade I and I steel bars should be used for the foundation of power machinery, and cold-rolled steel bars should not be used. Hot-rolled deformed steel bars should be used for parts subject to greater impact forces. Welded joints should not be used for steel bar connections.
3.1.13 For important machines or machines with strict requirements on settlement, permanent settlement observation points should be set up on their foundations, and the requirements should be noted in the design drawings. Regular observations should be made and records should be kept during foundation construction, machine installation and operation. 3.1.14 The total center of gravity of the foundation group and the centroid of the foundation bottom surface should be located on the same vertical line. When they are not on the same vertical line, the ratio of the eccentricity between the two and the length of the base side parallel to the eccentricity direction should not exceed the following limits:
(1) For steam turbine units and motor foundations
(2) For general machine foundations other than metal cutting machine tool foundations: When the standard value of the foundation bearing capacity f<150kPa When the standard value of the foundation bearing capacity f>150kPa Engineering Construction Standard Full Text Information System—Cross-sectional area of the pile,
1 —moment of inertia of the base surface through its centroidal axis; J —moment of inertia of the basis set through its centroidal axis; Iz —polar moment of inertia of the base surface through its centroidal axis; J, —polar moment of inertia of the basis set through its centroidal axis; h1 —distance from the centroid of the basis set to the foundation plane, h2 —distance from the centroid of the basis set to the base surface. 2.2.4 Calculation coefficients and others
——dynamic reduction coefficient of foundation bearing capacity, α——increase coefficient of foundation compressive stiffness due to foundation burial depth; Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
——increase coefficient of foundation shear, bending and torsional stiffness due to foundation burial depth Oxo
——increase coefficient of vertical damping ratio due to foundation burial depth; βx——increase coefficient of horizontal rotational coupled vibration damping ratio due to foundation depth,
%——foundation depth ratio.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Basic Design Provisions
3.1 General Provisions
1 The following information should be obtained during foundation design: 3.1.1
(1) The model, speed, power, specifications and outline dimension drawings of the machine; (2) The deadweight and center of gravity position of the machine;
(3) The outline drawing of the machine base, auxiliary equipment, pipeline location and the size of pits, trenches and holes, as well as the thickness of the grouting layer, the location of anchor bolts and embedded parts, etc.; (4) The disturbing force and disturbing moment of the machine and their direction; (5) The location of the foundation and the foundation drawings of the adjacent buildings; (6) The geological survey data of the construction site and the foundation dynamic test data. 3.1.2 The foundation of the power machine should be separated from the foundation, superstructure and concrete floor of the building.
3.1.3 When the pipeline is connected to the machine and generates large vibration, vibration isolation measures should be adopted at the connection between the pipeline and the building.
3.1.4 When the vibration of the power machine foundation has a harmful effect on nearby personnel, precision equipment, instruments, factory production and buildings, vibration isolation measures should be adopted. The impact of the vibration of low-frequency machines and impact machines on the factory structure should comply with the provisions of Appendix A of this code.
The design of the power machine foundation shall not produce harmful uneven settlement. 3.1.6
The power machine foundation and the foundation of the adjacent building are placed on the natural foundation. When the construction requirements can be met, the burial depth of the two may not be at the same elevation, but after the foundation is built, the backfill soil of the base elevation difference must be compacted. 3.1.7 When the power machine foundation is set on rock with good integrity, in addition to the forging hammer and drop hammer foundation, the anchor pile (rod) foundation can be used, and its foundation design shall comply with the provisions of Appendix B of this code.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3.1.8 The distance from the edge of the power machine base to the edge of the foundation should not be less than 100mm. Except for the forging hammer foundation, a secondary grouting layer should be reserved under the machine base, and its thickness should not be less than 25mm. The secondary grouting layer should be filled and compacted with micro-expansion concrete after the equipment is installed in place and initially adjusted, and combined with the concrete foundation surface. 3.1.9 The setting of the anchor bolts of the power machine foundation shall comply with the following provisions: (1) The depth of the anchor bolt with a hook shall not be less than 20 times the bolt diameter, and the embedding depth of the anchor bolt with an anchor plate shall not be less than 15 times the bolt diameter; (2) The distance between the anchor bolt axis and the foundation edge shall not be less than 4 times the bolt diameter, and the distance between the reserved hole edge and the foundation edge shall not be less than 100mm. If the requirements cannot be met, strengthening measures shall be taken;
(3) The net thickness of the concrete under the bottom surface of the embedded anchor bolt shall not be less than 50mm. When it is a reserved hole, the net thickness of the concrete under the bottom surface of the hole shall not be less than 100mm. 3.1.10 The power machine foundation should adopt an integral or assembled integral concrete structure. 3.1.11 The concrete strength grade of the power machine foundation should not be lower than C15. For large block or wall foundations designed according to structural requirements or not directly subjected to impact force, the concrete strength grade can be C10.
3.1.12 Grade I and I steel bars should be used for the foundation of power machinery, and cold-rolled steel bars should not be used. Hot-rolled deformed steel bars should be used for parts subject to greater impact forces. Welded joints should not be used for steel bar connections.
3.1.13 For important machines or machines with strict requirements on settlement, permanent settlement observation points should be set up on their foundations, and the requirements should be noted in the design drawings. Regular observations should be made and records should be kept during foundation construction, machine installation and operation. 3.1.14 The total center of gravity of the foundation group and the centroid of the foundation bottom surface should be located on the same vertical line. When they are not on the same vertical line, the ratio of the eccentricity between the two and the length of the base side parallel to the eccentricity direction should not exceed the following limits:
(1) For steam turbine units and motor foundations
(2) For general machine foundations other than metal cutting machine tool foundations: When the standard value of the foundation bearing capacity f<150kPa When the standard value of the foundation bearing capacity f>150kPa Engineering Construction Standard Full Text Information System—Cross-sectional area of the pile,
1 —moment of inertia of the base surface through its centroidal axis; J —moment of inertia of the basis set through its centroidal axis; Iz —polar moment of inertia of the base surface through its centroidal axis; J, —polar moment of inertia of the basis set through its centroidal axis; h1 —distance from the centroid of the basis set to the foundation plane, h2 —distance from the centroid of the basis set to the base surface. 2.2.4 Calculation coefficients and others
——dynamic reduction coefficient of foundation bearing capacity, α——increase coefficient of foundation compressive stiffness due to foundation burial depth; Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
——increase coefficient of foundation shear, bending and torsional stiffness due to foundation burial depth Oxo
——increase coefficient of vertical damping ratio due to foundation burial depth; βx——increase coefficient of horizontal rotational coupled vibration damping ratio due to foundation depth,
%——foundation depth ratio.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Basic Design Provisions
3.1 General Provisions
1 The following information should be obtained during foundation design: 3.1.1
(1) The model, speed, power, specifications and outline dimension drawings of the machine; (2) The deadweight and center of gravity position of the machine;
(3) The outline drawing of the machine base, auxiliary equipment, pipeline location and the size of pits, trenches and holes, as well as the thickness of the grouting layer, the location of anchor bolts and embedded parts, etc.; (4) The disturbing force and disturbing moment of the machine and their direction; (5) The location of the foundation and the foundation drawings of the adjacent buildings; (6) The geological survey data of the construction site and the foundation dynamic test data. 3.1.2 The foundation of the power machine should be separated from the foundation, superstructure and concrete floor of the building.
3.1.3 When the pipeline is connected to the machine and generates large vibration, vibration isolation measures should be adopted at the connection between the pipeline and the building.
3.1.4 When the vibration of the power machine foundation has a harmful effect on nearby personnel, precision equipment, instruments, factory production and buildings, vibration isolation measures should be adopted. The impact of the vibration of low-frequency machines and impact machines on the factory structure should comply with the provisions of Appendix A of this code.
The design of the power machine foundation shall not produce harmful uneven settlement. 3.1.6
The power machine foundation and the foundation of the adjacent building are placed on the natural foundation. When the construction requirements can be met, the burial depth of the two may not be at the same elevation, but after the foundation is built, the backfill soil of the base elevation difference must be compacted. 3.1.7 When the power machine foundation is set on rock with good integrity, in addition to the forging hammer and drop hammer foundation, the anchor pile (rod) foundation can be used, and its foundation design shall comply with the provisions of Appendix B of this code.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3.1.8 The distance from the edge of the power machine base to the edge of the foundation should not be less than 100mm. Except for the forging hammer foundation, a secondary grouting layer should be reserved under the machine base, and its thickness should not be less than 25mm. The secondary grouting layer should be filled and compacted with micro-expansion concrete after the equipment is installed in place and initially adjusted, and combined with the concrete foundation surface. 3.1.9 The setting of the anchor bolts of the power machine foundation shall comply with the following provisions: (1) The depth of the anchor bolt with a hook shall not be less than 20 times the bolt diameter, and the embedding depth of the anchor bolt with an anchor plate shall not be less than 15 times the bolt diameter; (2) The distance between the anchor bolt axis and the foundation edge shall not be less than 4 times the bolt diameter, and the distance between the reserved hole edge and the foundation edge shall not be less than 100mm. If the requirements cannot be met, strengthening measures shall be taken;
(3) The net thickness of the concrete under the bottom surface of the embedded anchor bolt shall not be less than 50mm. When it is a reserved hole, the net thickness of the concrete under the bottom surface of the hole shall not be less than 100mm. 3.1.10 The power machine foundation should adopt an integral or assembled integral concrete structure. 3.1.11 The concrete strength grade of the power machine foundation should not be lower than C15. For large block or wall foundations designed according to structural requirements or not directly subjected to impact force, the concrete strength grade can be C10.
3.1.12 Grade I and I steel bars should be used for the foundation of power machinery, and cold-rolled steel bars should not be used. Hot-rolled deformed steel bars should be used for parts subject to greater impact forces. Welded joints should not be used for steel bar connections.
3.1.13 For important machines or machines with strict requirements on settlement, permanent settlement observation points should be set up on their foundations, and the requirements should be noted in the design drawings. Regular observations should be made and records should be kept during foundation construction, machine installation and operation. 3.1.14 The total center of gravity of the foundation group and the centroid of the foundation bottom surface should be located on the same vertical line. When they are not on the same vertical line, the ratio of the eccentricity between the two and the length of the base side parallel to the eccentricity direction should not exceed the following limits:
(1) For steam turbine units and motor foundations
(2) For general machine foundations other than metal cutting machine tool foundations: When the standard value of the foundation bearing capacity f<150kPa When the standard value of the foundation bearing capacity f>150kPa Engineering Construction Standard Full Text Information System11 The concrete strength grade of the power machine foundation should not be lower than C15. For large block or wall foundations designed according to structural requirements or not directly subjected to impact force, the concrete strength grade can be C10.
3.1.12 The steel bars of the power machine foundation should be I and I grade steel bars, and cold rolled steel bars should not be used. Hot rolled deformed steel bars should be used for parts with greater impact force. Welded joints should not be used for steel bar connections.
3.1.13 For important machines or machines with strict requirements on settlement, permanent settlement observation points should be set on their foundations, and the requirements should be noted in the design drawings. Regular observations should be made during foundation construction, machine installation and operation, and records should be kept. 3.1.14 The total center of gravity of the foundation group and the centroid of the foundation bottom surface should be located on the same vertical line. When they are not on the same vertical line, the ratio of the eccentricity between the two and the length of the base side parallel to the eccentricity direction should not exceed the following limits:
(1) For steam turbine and motor foundations
(2) For general machine foundations other than metal cutting machine tool foundations: When the standard value of foundation bearing capacity f<150kPa When the standard value of foundation bearing capacity f>150kPa Engineering Construction Standard Full Text Information System11 The concrete strength grade of the power machine foundation should not be lower than C15. For large block or wall foundations designed according to structural requirements or not directly subjected to impact force, the concrete strength grade can be C10.
3.1.12 The steel bars of the power machine foundation should be I and I grade steel bars, and cold rolled steel bars should not be used. Hot rolled deformed steel bars should be used for parts with greater impact force. Welded joints should not be used for steel bar connections.
3.1.13 For important machines or machines with strict requirements on settlement, permanent settlement observation points should be set on their foundations, and the requirements should be noted in the design drawings. Regular observations should be made during foundation construction, machine installation and operation, and records should be kept. 3.1.14 The total center of gravity of the foundation group and the centroid of the foundation bottom surface should be located on the same vertical line. When they are not on the same vertical line, the ratio of the eccentricity between the two and the length of the base side parallel to the eccentricity direction should not exceed the following limits:
(1) For steam turbine and motor foundations
(2) For general machine foundations other than metal cutting machine tool foundations: When the standard value of foundation bearing capacity f<150kPa When the standard value of foundation bearing capacity f>150kPa Engineering Construction Standard Full Text Information System
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