HG/T 20670-2000 Chemical and petrochemical pipe rack and pipe pier design regulations (with clause explanation)
Some standard content:
Industry Standard of the People's Republic of China
HG/T 20670-2000
Design Provisions for Pipe Supports and Pipe Pier in Chemical and Petrochemical Industry
Specification for design of pipe supports andpipe pier in chemical and petrochemical industry2000-0530 Issued
2001- 06 - 01
State Administration of Petroleum and Chemical Industry
State Administration of Petroleum and Chemical Industry Document
State Petrochemical Administration (2000) No. 361
Notice on Approval of Six Chemical Industry Standards Including "General Drawing of H-Beam Steel Structure Pipe Rack (Truss Type Pipe Rack)" China Chemical Engineering Exploration and Design Association:
Develop and revise the project plan based on the engineering construction standards of our bureau and the former Ministry of Chemical Industry. The six chemical industry standard drafts, including "General Drawing of H-shaped Steel Structure Pipe Rack (Truss Pipe Rack)" organized and completed by your unit, have been approved by our bureau and are now published. The standard name and number are: Recommended standard:
Standard recommendation number
HG/T 21640. 1 - 2000
HG/T 21640. 2 - 2000
HG/T 21640. 3 - 2000
HG/T 20670 - 2000
HG/T 20690 - 2000
Standard name
General
Drawing (truss type pipe rack)
General
Drawing (longitudinal beam type pipe rack)
General
Drawing (independent type pipe rack)
Design regulations for pipe racks and piers in chemical and petrochemical industries
Technical regulations for design of circulating cooling water treatment in chemical enterprises
Standard recommendation number
HG7T 20698 - 2000
Standard name
Design regulations for heating, ventilation and air conditioning in chemical industry
The above standards shall be implemented from June 1, 2001. State Administration of Petroleum and Chemical Industry
May 30, 2000
China Chemical Exploration and Design Association
China Chemical Exploration and Design Association (2000) No. 180
Notice on entrusting the editing, publishing and issuing of chemical industry standards National Chemical Engineering Construction Standard Editing Center: Notice of the State Administration of Petroleum and Chemical Industry on the approval of the "H-shaped steel structure pipe rack general drawing (truss type pipe rack)" and other six chemical industry standards [State Petrochemical Development (2000) No. 361 approved the six chemical industry standards compiled by our association (the approval document is attached). After research, these six chemical industry standards are entrusted to your center to be responsible for editing, publishing and issuing.
Attachment: Notice on the approval of the "H-shaped steel structure pipe rack general drawing (truss type pipe rack)" and other six chemical industry standards.
China Chemical Engineering Exploration and Design Association
November 3, 2000
Industry Standard of the People's Republic of China
Specification for design of pipe supports andpipe pier in chemical and petrochemical industry
HG/T 20670 - 2000
Specification for design of pipe supports andpipe pier in chemical and petrochemical industryEditor: Sinopec Engineering Construction Corporation (formerly Sinopec Beijing Petrochemical Engineering Corporation)Approval department: State Administration of Petroleum and Chemical IndustryImplementation date: June 1, 200
National Chemical Engineering Construction Standard Editing Center (formerly Chemical Industry Ministry Engineering Construction Standard Editing Center) 2001 Beijing
The chemical industry standard "Design Specifications for Pipe Racks in Chemical Plants" (HGJ22-89) has been issued for more than a year, which plays a certain guiding role in guiding the pipe rack design in the chemical industry. Since new versions of national standards for load, earthquake resistance, concrete, steel structure, foundation, and corrosion prevention have been promulgated, in recent years, with the improvement of pipe rack design level in the chemical and petrochemical industries, the China Chemical Engineering Survey and Design Association has listed a plan below. This website has organized to upgrade the HGJ standard to the HG standard, and the original editor-in-chief unit, Sinopec Engineering Construction Company (formerly Sinopec Beijing Petrochemical Engineering Company), has revised the original standard. In chemical and petrochemical plants, pipe racks and pipe piers are the main structures that support the process production equipment and heating system pipelines of the entire plant. They are large in quantity and wide in scope. They are distributed and connected to each production unit in the plant. For example, in a larger petrochemical production plant, there are more than 500 pipe racks in the plant. Analyzing the previous designs, there are many unreasonable aspects. When revising this regulation, the following contents are emphasized: 1. The calculation of horizontal thrust should take into account the restraining effect of the pipeline; 2. The calculated length and slenderness ratio of the pipe rack column should take into account the actual load characteristics of the pipe rack; 3. There is an elastic support between the pipeline and the pipe rack, which can make the design of a large number of pipe rack structures more economical and reasonable. 4. According to the investigation, there are many cases in which pipe racks are damaged by hand-pipe vibration in pipe rack accidents. Therefore, the design of vibrating pipe racks should also be given enough attention: 5. In the seismic design of engineering, the previous regulations lack consideration of the seismic action and seismic calculation of pipe rack structures. In order to reduce earthquake disasters and use construction funds reasonably, the relevant contents of the relevant parts are supplemented in accordance with the newly promulgated relevant specifications, so that the design of pipe racks and pipe piers is economically reasonable, technologically advanced, safe and reliable. In addition, the protection measures such as swimming snow load, truss-type pipe gallery, special pipe racks and anti-corrosion and fire prevention of pipe racks are added.
Since this regulation is widely used, the opinions of nearly 10 major chemical and petrochemical design institutes across the country were sought when revising this regulation, and the latest design experience at home and abroad was absorbed. After the finalization, Fan Dien of Huatai Engineering Company (formerly the Second Design Institute of the Ministry of Chemical Industry) and Zhang Dade and Yang Wenjun, senior engineers of the National Chemical Building Design Technology Center, were invited to review and approve it. After repeated review and deliberation, this regulation was made more perfect and reasonable, and finally revised and completed by the compilation unit.
The unit proposing, editing unit and main drafters of this regulation are: Proposing unit: National Chemical Building Design Technology Center Station (P.O. Box 9824, Beijing, zip code 100029)
Main editing unit: Sinopec Engineering Construction Company (formerly Sinopec Beijing Petrochemical Engineering Company) (No. 21, Anyuan, Anhui North, Beijing, zip code 100101) Main drafters: Kuang Xuewen, Feng Liangjing, Fan Dien, Zhang Dade, Yang Wenjun National Chemical Building Design Technology Center Station
May 2000
Terms and symbols
Main symbols
Basic provisions
Pipeline restraint Coefficient and horizontal force action point··Vertical load
Horizontal thrust of pipeline··
Wind load
Ice and snow load
Seismic action and seismic calculation
General provisions
Seismic verification of cross section
Pipe rack with vibrating pipeline
Load effect combination
Pipe rack calculation
Independent pipe rack
Pipe rack with corridor
Sling pipe rack
Spanning pipe rack
Special pipe rack
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Pipe rack foundation
Pipe rack construction regulations
Anti-corrosion design of pipe rack
Design of fire protection layer of steel pipe rack
Appendix A
Appendix B
Appendix C
·(70)
（79）
Adopt ⅡI type compensation Calculation formula for horizontal thrust of fixed pipe racks (81) Technical specifications of steel strands
Fire resistance of fine stone concrete fire protection layer and fire retardant coating·(84) Explanation of terms used in this regulation
Appendix D
Explanation of clauses
1 General
1.0.1 In order to make the design of pipe racks, pipe galleries and pipe piers of chemical and petrochemical production equipment advanced in technology, economically reasonable, safe and reliable, and ensure production requirements, this regulation is specially formulated.
1.0.2 This regulation is formulated in accordance with the principles and regulations of various national standards and specifications for building structure design and in combination with the characteristics of pipe rack structures. 1.0.3: This regulation is applicable to the design of pipe racks, pipe galleries and pipe piers commonly used in large and medium-sized chemical and petrochemical production equipment in areas with an earthquake intensity of 8 degrees and below. It can also be used as a reference for pipe racks of certain production equipment in related industries such as metallurgy, electricity, light industry, and textiles.
1.0.4 When implementing these regulations, the relevant requirements of the relevant national standards and specifications in force shall also be observed.
1.0.5 The design of pipe racks shall strive to reduce duplication of work, and the general drawings of reinforced concrete series pipe racks and H-shaped steel structure series pipe racks compiled by the chemical and petrochemical industries shall be used first.
2.1.1 Pipe racks
2. Terms and symbols
2.1 Terms
The general term for all structures except pipes in the overhead pipe system. 2.1.2 Pipe piers
The general term for structures with a height of less than about 1m set along the ground and using solid structures to support pipes.
2.1.3 Pipelines
The general term for all process and thermal pipes set on the top of pipe racks or pipe piers. 2.1.4 Rigid pipe rack
The rigidity of the pipe rack column is relatively large, and the deformation of the pipe rack top cannot meet the needs of thermal deformation of the pipeline; the contact surface between the pipeline and the top of the pipe rack produces relative displacement, and the pipe rack bears the friction generated by the expansion of the pipeline.
2.1.5 Flexible pipe rack
The rigidity of the pipe rack column is relatively small, and the deformation of the pipe rack top can meet the needs of thermal deformation of the pipeline. The contact surface between the pipeline and the top of the pipe rack has no relative displacement, and the pipe rack bears the horizontal thrust generated by the displacement of the column top.
2.1.6 Fixed pipe rack
The pipe support and the pipe rack are fixedly connected, and relative displacement is not allowed. The pipe rack bears all the longitudinal horizontal thrusts generated between sections. 21.7 Intermediate movable pipe rack (hereinafter referred to as intermediate pipe rack) The connection between the pipe support and the contact surface of the pipe rack can slide and roll, and relative displacement is allowed.
21.8, I-type compensator pipe rack
It is located between the two fixed pipe racks in the longitudinal direction of the pipeline, roughly in the middle position, and is a movable pipe rack supporting the II-type compensator pipe.
2.1.9 Independent pipe rack
A pipe rack without longitudinal connecting components between adjacent pipe racks is called an independent pipe rack. It is suitable for pipes with large rigidity, few pipes, and the pipes themselves can cross by themselves. 2.1.10 Pipe gallery pipe rack
A longitudinal connecting component, such as a longitudinal beam or a rack, is set between adjacent independent pipe racks to form a spatial system called a pipe gallery pipe rack. It is mostly set in the installation area and can be single-layer, double-layer, or multi-layer.
2.1.11, Low pipe rack
A pipe rack with a clear distance from the outer edge of the pipe insulation layer to the ground of 0.5~2.5m. Medium pipe rack
A pipe rack with a clear distance from the outer edge of the pipe insulation layer to the ground of 2.5~5.0m. 2.1.13. High pipe rack
A pipe rack with a net distance of more than 5.0m from the outer edge of the pipe insulation layer to the ground. 2.1.14
Spanning pipe rack
When crossing a railway or highway, the pipeline needs to be raised and supported on the high pipe rack on both sides of the road to form a type II pipeline. The high pipe rack at this location is called a spanning pipe rack. 2.1.15 Cable-suspended pipe rack
A pipe rack composed of an independent pipe rack, inclined cables, horizontal tie rods, steel beams, and end inclined cables, generally with a spacing of no more than 9mo
Long-arm pipe rack
According to the requirements of the allowable span of the pipeline, the independent pipe rack is extended with a long arm in the longitudinal direction, and a beam is installed on it to support the pipeline. This type of pipe rack is called a long-arm pipe rack. 2.1.17
Special pipe rack
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