This specification is applicable to the vibration calculation and design of multi-storey factory floor under the dynamic load of small and medium-sized machine tools, refrigeration compressors, motors, fans or water pumps. GB 50190-1993 Multi-storey factory floor anti-micro-vibration design specification GB50190-1993 standard download decompression password: www.bzxz.net

Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
50190-93
Code for design of anti-microvibration of multistory factory floor
1993—11—16
1993—06—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 System
National Standard of the People's Republic of China
Code for design of anti-microvibration of multistory factory floor
multistoryfactoryfloor
GB50190-93
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: June 1, 1994
Engineering construction standard full text information system
Engineering construction standard full text information system
Notice on the release of the national standard "Multi-story factory floor anti-micro-vibration design specification"
Construction Standard [1993] No. 859
According to the requirements of the National Planning Commission's [1984305 document, the national standard "Multi-story factory floor anti-micro-vibration design specification" compiled by the former Ministry of Machinery and Electronics Industry Design Institute in conjunction with relevant units has been reviewed by relevant departments. The "Multi-story factory floor anti-micro-vibration design specification" GB50190-93 is now approved as a mandatory national standard and will be implemented on June 1, 1994.
This specification is managed by the Ministry of Machinery Industry, and its specific interpretation and other work is the responsibility of the Design Institute of the Ministry of Machinery Industry, and its publication and distribution is the responsibility of the Standard and Norms Research Institute of the Ministry of Construction. Ministry of Construction of the People's Republic of China
November 16, 1993
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
2 Terms and Symbols
2.1 Terms...
2.2 Symbols
Basic Provisions
Dynamic Loads
4.1 Disturbance of Machine Tools
4.2 Disturbance of Fans, Pumps and Motors
4.3 Disturbance of Refrigeration Compressors
Allowable Value of Vertical Vibration·
Vertical Vibration Value
General Provisions
6.2 Calculation of Floor Stiffness·
6.3 Calculation of Natural Frequency
6.4 Calculation of Vertical Vibration Value
Equipment Layout , vibration isolation and structural measures
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7.1 Equipment layout
7.2 Equipment and pipeline vibration isolation
7.3 Structural measures…
Appendix A
Simplified calculation method for vibration displacement transfer coefficient of multi-story factory floor
Explanation of terms used in this specification
Appendix B
Additional explanation·
Engineering Construction Standard Full Text Information System
:(18)
（30)
（30)
Engineering Construction Standard Full Text Information System
1 General
This specification is formulated to make the design of multi-story factory floor technologically advanced, economically reasonable, simple and applicable, and ensure normal production. 1.0.2
2This specification is applicable to the vibration calculation and design of multi-storey factory floor under the action of small and medium-sized machine tools, refrigeration compressors, motors, fans or water pumps with dynamic loads less than 600N.
3When designing the anti-micro-vibration of multi-storey factory floor, the dynamic load of the equipment on the floor shall be implemented in accordance with this specification, and other loads on the floor shall be implemented in accordance with the provisions of the current national standard "Building Structure Load Code"; the structural calculation of the floor, regional environment and labor protection vibration requirements shall comply with the provisions of the current relevant national standards and specifications. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Terms and Symbols
2.1 Terms
2.1.1 Compact zone of first frequency
Compact zone of first frequency For a multi-span continuous beam under dynamic load, several compact zones appear on its amplitude-frequency characteristic curve. Each compact zone has several natural frequencies. The frequency compact zone that first appears on the amplitude-frequency characteristic curve is called the first frequency compact zone. 2.1.2
Ratio of relative fiexural rigidity of slab to beam
The ratio of the relative fiexural rigidity of slab per unit width multiplied by the span of the main beam to the relative fiexural rigidity of the main beam.
2.2 Symbols
Additional
Actions and effects
Machine disturbance force
Vertical vibration displacement of the slab
Machine disturbance force action point, static displacement of the slabMachine disturbance force action point, vertical vibration displacement of the response vibration displacement of the points other than the disturbance force action point
When multiple machines are running at the same time, the synthetic vibration displacement generated by a certain calculation point of the slabWhen multiple machines are running at the same time, the response vibration displacement generated by each component of the model at a certain calculation point| |tt||When a machine is running, the floor
When a machine is running, the response vibration speed generated by a certain verification point on the floor1st vibration receiving layer
Response vibration displacement of each verification point
Uniformly distributed mass per unit length
The lowest natural frequency in a frequency-dense area
The highest natural frequency in a frequency-dense area
Calculated value of the lowest natural frequency in a frequency-dense areaDisturbing force frequency of the machine
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Calculation Calculation index
Allowable value of vertical vibration displacement
Allowable value of vertical vibration velocity
Elastic modulus of material
Damping ratio of floor
Geometric parameters
Sectional inertia moment
Span of secondary beam or prefabricated trough plate in the longitudinal direction of floor Span of main beam
Spacing between secondary beams or width of prefabricated trough plate
Calculation parameters
Concentrated mass conversion factor
Displacement coefficient
Space influence coefficient
Technical connection tooth number||tt| |Vibration displacement transfer coefficient
Engineering construction standard full text information system
Engineering construction standard full text information system
Basic provisions
3.0.1 The following information should be obtained for the design of floor slabs subjected to dynamic loads: (1) Plan and section drawings of the building;
(2) Plan layout drawings of equipment on the floor slab, equipment names and base dimensions; (3) Disturbance force, disturbance frequency, direction and position of disturbance force action and deadweight of the equipment,
(4) Permissible vertical vibration values ​​of machine tools, equipment and instruments on the floor slabs. 3.0.2 Floor slabs subjected to dynamic loads should be cast-in-place reinforced concrete ribbed floor slabs or assembled integral floor slabs.
3.0.3 For ribbed floor slabs with a secondary beam spacing of less than or equal to 2m and a plate thickness of greater than or equal to 80mm and for assembled integral floor slabs with a prefabricated trough plate width of less than or equal to 1.2m, the minimum cross-sectional dimensions of beams and plates shall comply with the provisions of Table 3.0.3. Minimum cross-sectional dimensions of beams and slabs
Ribbed floor
Slab height-to-span ratio
Height-to-span ratio
Assembled integral floor
Thickness of cast-in-place surface layer
(mm)
Height-to-span ratio
Height-to-span ratio
3.0.4 The dynamic load generated by power equipment shall be provided by the equipment manufacturer; when no data is available, it may be adopted in accordance with the provisions of Chapter 4 of this Code. 3.0.5 The allowable values ​​of vibration displacement and vibration velocity of floors or tables supporting machine tools, instruments and equipment shall be provided by the equipment and instrument manufacturers or determined through tests; when no data is available, it may be adopted in accordance with the provisions of Chapter 5 of this Code. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3.0.6 The vertical vibration value of the floor shall meet the following expression requirements: A,≤[A]
V,≤[]
Az—vertical vibration displacement of the floor (m); Vz
-vertical vibration velocity of the floor (m/s); [A]——permissible value of vertical vibration position (m); [V]——permissible value of vertical vibration velocity (m/s). (3.0.6—1)
(3.0.6—2)
7When a machine tool with a rough surface is installed on the floor, if the relative bending stiffness per unit width of the floor (E,I/c13) is greater than or equal to the specified value in Table 3.0.7, vertical vibration calculation may not be performed.
Relative bending stiffness per unit width of the floor E,I,/cl (N/m2)Number of transverse spans of the floor
Relative bending stiffness ratio of plate beams
Stiffness ratio of plate beamsα
Density of machine tool distribution (m2/unit)
Note: ①The density of machine tool distribution is the total area of ​​the machine tool layout area divided by the number of machine tools. ②B—elastic modulus of primary beam or prefabricated trough plate (N/m2); Ip——section moment of inertia of secondary beam or prefabricated trough plate (m*); primary beam spacing or width of prefabricated trough plate (m); 1——span of secondary beam or prefabricated trough plate (m). ③Relative bending stiffness ratio of plate beam α, calculated according to formula (6.2.3). Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Dynamic Load
Machine Tool Disturbance
The disturbance force of machine tool can be determined according to Table 4.1.1.
Machine tool disturbance force
CG6125
Machine tool CM6125
Note: ①The disturbance force in the table is the equivalent vertical disturbance force, X51
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②When processing aluminum and copper products, the disturbance force takes the lower limit value, and when processing steel products, the disturbance force takes the upper limit value. 4.1.2
The point of action of the machine tool disturbance force can be the geometric center of the bottom surface of the machine tool. 4.2 Fan, water pump and motor disturbance force
The disturbance force of the fan, water pump and motor can be calculated according to the following formula: 4.2.1
P=moeowi
w. =0.105m
Wherein P
-machine disturbance force (N);
total mass of rotating parts (kg);
(4. 2. 1 — 1)
(4. 2. 1 — 2)
e-equivalent eccentricity of the total mass of rotating parts to the rotation center (m); w. ——machine working circular frequency (rad/s); n—machine speed (r/min).
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
4.2.2 The equivalent eccentricity e of the total mass of rotating parts to the rotation center can be determined according to Table 4.2.2.
Equivalent eccentricity e of the total mass of rotating parts to the rotation center Fan
2.5×5.5×
Belt drive
15001000
01500|1000
10-410-410-10-4
10-410-410-
10-410-410-410-410-4
4.2.3 For machines working in corrosive environments, the equivalent eccentricity eo of the total mass of rotating parts to the rotation center shall be as shown in Table 4.2.2 The value is multiplied by the dielectric coefficient, and the dielectric coefficient can be taken as 1.1~1.2; the dielectric coefficient of the plastic fan can be taken as 1.0. 4.3 Disturbance force of refrigeration compressor
4.3.1 The parameters for calculating the disturbance force and disturbance torque of the refrigeration compressor shall be determined in accordance with the following provisions:
4.3.1.1 The mass of each rotating component converted to the mass of the crank center (Figure 4.3.1) can be calculated according to the following formula:
(1) Single crank:
m,=m+2°mm2
(2) Double crank:
Tanbm2+Tad
m, = m1 + rad,
(4.3.1-1)
(4.3.1-2)
wherein m, is the mass of each rotating component converted to the mass of the crank center (kg); mt is the mass of the crank pin (kg);
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
is the mass of a single crank arm or end crank arm (kg); m2
is the mass of an intermediate crank arm (kg);
ms is the mass of a single connecting rod assembly (kg ）。 ）。
ma——single balance iron mass (kg);
rao——crank radius (m);
l——distance from the mass center of a single crank arm or end crank arm to the center of the main shaft (m);
ra——distance from the mass center of the middle crank arm to the center of the main shaft (m);b——crank distance (m);
d——distance between the mass centers of the two end crank arms (m);d——axial distance between the mass centers of the upper, lower and middle crank arms (m);
l. —distance from the mass center of the connecting arm to the crank pin (m);l. —connecting rod length (m);
number of connecting rods carried by a crank;
Taz——distance from the mass center of the balance iron to the main shaft (m);a—axial distance between the mass centers of two balance irons (m);c—connecting rod spacing (m).
For reciprocating parts, the mass of the crank-connecting rod mechanism can be converted to the mass of the crank pin by the following formula:
(4.3.1-3)
The mass of the crank-connecting rod mechanism is converted to the mass of the crank pin (kg); where m. -
ms-The mass of all piston components (including piston rod and piston) on the crank-connecting rod mechanism (kg).
Engineering Construction 8 Standard Full Text Information System1) The mass can be calculated according to the following formula:
(1) Single crank:
m,=m+2°mm2
(2) Double crank:
Tanbm2+Tad
m, = m1 + rad,
(4.3.1-1)
(4.3.1-2)
Wherein, m, is the mass of each rotating component converted to the mass of the crank center (kg); mt is the mass of the crank pin (kg);
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
is the mass of a single crank arm or end crank arm (kg); m2
is the mass of an intermediate crank arm (kg);
ms is the mass of a single connecting rod assembly (kg ）。 ）。
ma——single balance iron mass (kg);
rao——crank radius (m);
l——distance from the mass center of a single crank arm or end crank arm to the center of the main shaft (m);
ra——distance from the mass center of the middle crank arm to the center of the main shaft (m);b——crank distance (m);
d——distance between the mass centers of the two end crank arms (m);d——axial distance between the mass centers of the upper, lower and middle crank arms (m);
l. —distance from the mass center of the connecting arm to the crank pin (m);l. —connecting rod length (m);
number of connecting rods carried by a crank;
Taz——distance from the mass center of the balance iron to the main shaft (m);a—axial distance between the mass centers of two balance irons (m);c—connecting rod spacing (m).
For reciprocating parts, the mass of the crank-connecting rod mechanism can be converted to the mass of the crank pin by the following formula:
(4.3.1-3)
The mass of the crank-connecting rod mechanism is converted to the mass of the crank pin (kg); where m. -
ms-The mass of all piston components (including piston rod and piston) on the crank-connecting rod mechanism (kg).
Engineering Construction 8 Standard Full Text Information System1) The mass can be calculated according to the following formula:
(1) Single crank:
m,=m+2°mm2
(2) Double crank:
Tanbm2+Tad
m, = m1 + rad,
(4.3.1-1)
(4.3.1-2)
Wherein, m, is the mass of each rotating component converted to the mass of the crank center (kg); mt is the mass of the crank pin (kg);
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
is the mass of a single crank arm or end crank arm (kg); m2
is the mass of an intermediate crank arm (kg);
ms is the mass of a single connecting rod assembly (kg ）。 ）。
ma——single balance iron mass (kg);
rao——crank radius (m);
l——distance from the mass center of a single crank arm or end crank arm to the center of the main shaft (m);
ra——distance from the mass center of the middle crank arm to the center of the main shaft (m);b——crank distance (m);
d——distance between the mass centers of the two end crank arms (m);d——axial distance between the mass centers of the upper, lower and middle crank arms (m);
l. —distance from the mass center of the connecting arm to the crank pin (m);l. —connecting rod length (m);
number of connecting rods carried by a crank;
Taz——distance from the mass center of the balance iron to the main shaft (m);a—axial distance between the mass centers of two balance irons (m);c—connecting rod spacing (m).
For reciprocating parts, the mass of the crank-connecting rod mechanism can be converted to the mass of the crank pin by the following formula:
(4.3.1-3)
The mass of the crank-connecting rod mechanism is converted to the mass of the crank pin (kg); where m. -
ms-The mass of all piston components (including piston rod and piston) on the crank-connecting rod mechanism (kg).
Engineering Construction 8 Standard Full Text Information System
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