This regulation applies to the design of various common equipment foundations in chemical, petrochemical and related devices, excluding equipment foundations on floors. The design of tower equipment foundations and piston and centrifugal compressor foundations is specified in special regulations. The design of various equipment foundations in this regulation should be based on the characteristics of the equipment and foundation, and a reasonable foundation plan and foundation type should be selected to ensure that the bearing capacity, deformation and stability of the foundation and foundation meet the specifications to meet the requirements of construction, production and maintenance. HG/T 20643-1998 Chemical Equipment Foundation Design Regulations HG/T20643-1998 Standard Download Decompression Password: www.bzxz.net

Industry Standard of the People's Republic of China
HG/T 20643 -- 98
Specification for design of
equipment foundations in chemical industry1998-02-05 Issued
1998 - 05 - 01
Ministry of Chemical Industry of the People's Republic of China
Document of Ministry of Chemical Industry
Hua Jian Fa (1998) No. 38
Notice on Issuing Four Industry Standards Including "Technical Conditions for Lime Kiln Masonry"
To chemical industry departments (bureaus, companies) of provinces, municipalities directly under the Central Government, autonomous regions and cities with independent planning status, and relevant design units:
The four industry standards including "Technical Conditions for Lime Kiln Masonry" organized and compiled by the Industrial Furnace Design Technology Center Station of the Ministry of Chemical Industry and the Architectural Design Technology Center Station of the Ministry of Chemical Industry have been approved as recommended industry standards after examination. The standard names, numbers and implementation dates are shown in the attached table. The Sixiang Standard is managed by the Industrial Furnace Design Technology Center Station and the Architectural Design Technology Center Station of the Ministry of Chemical Industry, and published and distributed by the Engineering Construction Standard Editing Center of the Ministry of Chemical Industry.
Ministry of Chemical Industry
February 5, 1998
Name of the Standard
"Technology for the Construction of Lime Kilns
Conditions"
"Fiber Lining Design Technology for Chemical Industrial Furnaces
HG/T 20641--1998
Implementation Date
"Provisions for the Design of Chemical Equipment Foundations"
HG/T 20643-1998
"Pre-embedded Grooved Anchor Rails
HG/T 21617--1998||1998.5. 1 General Drawing》
Editing Unit
Industrial Furnace Design Technology Center of Ministry of Chemical Industry
Shanghai Pharmaceutical
Design Institute
China Huanqiu Chemical
Engineering Company
China Huanqiu Chemical
Engineering Company
Industry Standard of the People's Republic of China
Design Regulations for Basic Design of Chemical Equipment
HG/T20643—9 8
Editing unit: China Huanqiu Chemical Engineering Corporation Hunan Chemical Engineering Design Institute
Approving department: Ministry of Chemical Industry Implementation date: May 1, 1998 Engineering Construction Standard Editing Center of Ministry of Chemical Industry
1998 Beijing
2 Terminology
3 General provisions
Foundations of pump equipment
Foundations of tank and storage tank equipment
5.1 Foundations of gas holders
Table of contents.
5.2 Steel vertical cylindrical storage tank foundation
5.3 Spherical tank foundation
Heat exchanger foundation·
Industrial furnace foundation
Air separation unit cold box foundation
Appendix A Calculation of top surface load of spherical tank foundation
Stress and action on bottom surface of circular foundation under eccentric loadAppendix B1
Area calculation
Appendix C
Thermal calculation of cold box foundation of air separation unit
Article explanation
1 General
1.0.1 These regulations apply to the design of various common equipment foundations in chemical, petrochemical and related plants, excluding equipment foundations on floors. The design of tower equipment foundations, piston and centrifugal compressor foundations can be found in special regulations. 1.0.2 The design of the foundation of various types of equipment in this regulation should select reasonable foundation schemes and foundation types based on the characteristics of the equipment and foundation to ensure that the bearing capacity, deformation and stability of the foundation and foundation meet the specifications to meet the requirements of construction, production and maintenance. 1.0.3 When designing the foundation of various types of equipment, in addition to complying with these regulations, the following specifications shall also be met (all standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards):
GBJ 9—87
GBJ 10—89
GBJ 7—89
GB 5019193
GBI 11-89
GB 5002194
GB 50046-95
JGI 94-94
JGJ 79-91
TI 32—78
HG 20517-92
GB1233790
Code for Loads on Building Structures
Code for Design of Concrete Structures
Code for Design of Building Foundations
Code for Seismic Design of Structures
Code for Seismic Design of Buildings
Code for Geotechnical Engineering Investigation
Code for Anti-corrosion Design of Industrial Buildings
Technical Code for Building Pile Foundations
Technical Code for Foundation Treatment of Buildings
Code for Seismic Design of Outdoor Water Supply and Drainage and Gas Thermal Engineering
Steel Low-pressure Wet Gasholder
Steel Spherical Storage Tanks
The treatment and foundation design of collapsible loess, perennial frozen soil, expansive soil, underground goaf, etc. shall still comply with the provisions of the relevant current national standards and specifications. 1
2 Terms
2. 0. 1 Foundation group The general term for the foundation and the equipment on the foundation and the fill on the bottom plate. 2.0.2 Friction of expansiom of heat ecchanger Friction of expansiom of heat ecchanger refers to the standard value of friction acting on the top support of the foundation sliding pier due to temperature changes during normal operation. 2.0.3 Pull force PhPull
The pull force of the heat exchanger refers to the standard value of the horizontal tension generated by pulling out the tube bundle during shutdown and maintenance, acting on the center line of the equipment.
3 General provisionsbzxz.net
3.0.1 The safety level of the equipment foundation listed in this regulation should be level 2, and the safety level of the foundation of machine pump equipment below 200kW should be level 3. Earthquake resistance design is based on Class C structure. 3.0.2 The equipment foundation should adopt cast-in-place plain concrete or reinforced concrete structure. The strength grade of plain concrete shall not be lower than C15: the concrete strength grade of reinforced concrete shall not be lower than C20; the concrete strength grade of the foundation cushion layer shall be C10. The steel bars shall be grade I and grade I hot-rolled steel bars, and the structural steel bars shall be grade I steel bars. 3.0.3 The secondary grouting material for the reserved holes of foundation bolts and the top surface leveling shall be micro-expansion or non-shrinkage grouting material. The thickness of the secondary grouting layer on the top surface of the foundation shall be 30-50mm, or in accordance with the regulations of the equipment manufacturer. When its thickness is less than or equal to 30mm, 1:2 cement mortar shall be used. When the thickness is greater than 30mm, fine stone concrete with a strength grade higher than the foundation body shall be used. 3.0.4 The top surface of the foundation shall not be less than 200mm above the ground and its burial depth shall not be less than 0.8m.
Economic and reasonable solutions shall be adopted for foundation treatment according to the characteristics, power and importance of the equipment. The foundation settlement and inclination rate shall meet the requirements of Table 3.0.5. 3
Allowable deformation value of foundation of equipment foundation
Allowable deformation value
Equipment foundation category
Compressor
Translucent compressor (power <500kW)
Piston compressor (power <500kW)
Centrifugal pump
Power ≥500kW
Power ≤500kW
Heat exchanger foundation
General tank, storage tank
Industrial furnace foundation
Capacity ≤500 0m2
Capacity 5000~10000m
Capacity ≤5000m2
Capacity 5000-10000m
Central settlement (mm)
Normal pressure device
High pressure device
50~~100
100~2001
50~100
100~200
3.0.6 The minimum thickness of the concrete protective layer of the foundation force reinforcement should be 50mm. 3.0.7 Except for special requirements, the material of the foundation anchor bolts should be Q235-A, F steel without cold processing, and set according to the equipment requirements. The embedment depth L shall meet the following requirements: for anchor bolts with hooks (or straight hooks), it shall not be less than 20d; for anchor bolts with anchor plates, it shall not be less than 15d (d is the bolt diameter), but structural bolts are not subject to this limitation. Both shall not be less than 300mm. The dimensions of the anchor bolt hook are shown in Figure 3.0.7, the structural dimensions of the straight hook and anchor plate are detailed in the standard design of the chemical industry "General Drawing of Anchor Bolts" (HG21545-92).
r2.5d(d≤28)
3. 5d(>28)
Figure 3.0.7 Anchor bolt hook dimensions
3.0.8 When the anchor bolt is buried, the distance from its center line to the foundation edge should not be less than 4d, and should not be less than 100mm (when d>20, it should not be less than 150mm) and not less than half of the width of the anchor plate plus 50mm. The net thickness of the concrete under the bottom of the anchor bolt should not be less than 50mm. See Figure 3.0.8 for details.
≥100(when d≤<20) and ≥4d
≥150(when d>20)
Figure 3.0.8 Pre-buried anchor bolt structure
3.0.9When the anchor bolt is buried in the reserved hole, the distance from the edge of the reserved hole to the edge of the foundation shall not be less than 100mm, and the distance from the bottom of the reserved hole to the bottom of the foundation shall not be less than 100mm. When the requirements are not met, a steel mesh with a diameter of 6~~~8mm and a spacing of 100~~150mm should be configured. The distance from the bottom of the anchor bolt to the bottom of the reserved hole shall not be less than 50mm. See Figure 3.0.9 for details.
La=100
Figure 3.0.9 Pre-buried hole structure for anchor bolts
determined.
The size of the reserved hole for anchor bolts with hooks (or straight hooks) can be as shown in Table 3.0.10 Bolt specifications
M12, M14
Table 3.0.10 Size of reserved holes for anchor bolts
\Hole size, length × width (ab) (mm) 140×120
140×120
160×120
160×120
180×120
180×120
200×120
Hole depth h (mm)
3.0.11 Temperature joints should not be set in the equipment foundation. When the side length (or diameter) of the foundation bottom plate and the circumference of the annular foundation exceed 40m, a post-cast strip should be reserved. When the foundation has pillars, the post-cast strip should be set between the pillars. The width of the back strip should be 500-1000mm, and the reinforcement should be 1.2 times the original section reinforcement. After the bottom plate is poured for 28 days, a higher-grade non-shrinkage concrete than the foundation body should be used for pouring. Expansion agent can also be added to the concrete without reserving a back-cast strip. 3.0.12 For important compressors, large gas holders, storage tanks, spherical tanks, industrial furnaces, cold boxes and other foundations, settlement observation points should be set at the corners of the top surface of the foundation according to the process requirements, and regular observations should be required in the design instructions during construction and production. 3.0.13 The foundation of outdoor equipment built in frozen soil areas should take anti-freezing and swelling measures according to the design specifications for frozen soil areas, and water accumulation in the reserved holes of the anchor bolts should be prevented. 3.0.14 The equipment foundation should take corresponding anti-corrosion and sewage measures according to the conditions of the corrosive medium and the requirements of operation, maintenance, etc. 3.0.15 Before the construction of the equipment foundation, the design drawings should be checked with the delivered equipment, and construction can only be carried out after they are consistent.
3.0.16 The concrete of the foundation should be poured in one time without leaving construction joints. When construction joints are required, the construction and operation requirements of the construction joints should be strictly followed. Equipment can only be installed when the concrete strength reaches more than 70%. The backfill soil around the foundation should be compacted evenly in layers.
3.0.17 The exposed surface of the foundation can be smoothed with 1:2 cement mortar. 7
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