1 General provisions
1.0.1 This code is enacted, in the design of pipe supports and pipe sleepers in chemical and petrochemical industries, to carry out the national policies on technology and economy, to ensure advanced technology, safety and reliability, economic rationality and quality.
1.0.2 This code is applicable to the design of pipe supports and pipe sleepers in chemical and petrochemical industries. It is not applicable to the design of pipe supports with pipe itself as a stressed structure and of other large cross-over pipe supports across the rivers.
1.0.3 In addition to this code, the design of pipe supports and pipe sleepers in chemical and petrochemical industries shall also comply with those stipulated in the current relevant standards of the nation.
2 Terms and symbols
2.1 Terms
2.1.1
pipe support
general term of various structures supporting overhead pipes or cable bridges
2.1.2
pipe sleeper
pier-type structure supporting lower pipe with height less than or equal to 1m from the ground
2.1.3
pipe
general term of process and utility lines supported by pipe support or pipe sleeper
2.1.4
sliding pipe support
the connection between the pipe saddle and the pipe support interface can slide and roll, allowing the pipe support with relative displacement, including rigid pipe support and flexible pipe support. It is also known as intermediate pipe support or intermediate sliding pipe support
2.1.5
rigid sliding pipe support; rigid pipe support
sliding pipe support (column) which has high rigidity and bears the friction generated from pipe displacement, i.e. the relative displacement between pipe and the pipe support generated when the horizontal displacement of the pipe support is less than the pipe displacement. It is also known as rigid pipe support
2.1.6
flexible sliding pipe support; flexible pipe support
sliding pipe support (column) which has small rigidity and bears the horizontal thrust generated by the displacement of the column top when the horizontal displacement of the pipe support can meet the needs of pipe displacement and there is no relative displacement between pipe and the pipe support. It is also known as flexible pipe support
2.1.7
anchor pipe support
pipe support bearing all the longitudinal and horizontal thrust generated between sections when the pipe saddle is fixedly connected with the pipe support, and no relative displacement is allowed between the pipe and the pipe support
2.1.8
∏ shaped compensator pipe support
sliding pipe support located between two anchor pipe supports in the longitudinal direction of the pipe, generally at the middle position, for supporting the ∏ shaped compensator pipe
2.1.9
single-post pipe support
pipe support without longitudinal connecting members between adjacent pipe supports, suitable for self-crossing pipes
2.1.10
frame pipe support
spatial structure system formed by setting longitudinal connection members, such as longitudinal beams or trusses, between adjacent pipe supports, which is mostly arranged in the device area and between devices, and can be single-layer, double-layer or multi-layer. According to the area and function, it can be divided into whole plant pipe rack, equipment pipe rack, block pipe rack, utility pipe rack, pipe rack in front of furnace, pipe rack with air cooler, etc. It is also known as pipe rack
2.1.11
lower pipe support
pipe support with a clear distance of 0.5m~2.5m from the outer edge of the lowest pipe insulation layer to the ground
2.1.12
medium pipe support
pipe support with a clear distance of 2.5m~5.0m from the outer edge of the lowest pipe insulation layer to the ground
2.1.13
higher pipe support
pipe support with a clear distance of over 5.0m from the outer edge of the lowest pipe insulation layer to the ground
2.1.14
cross-over pipe support
when the pipe needs to cross the railway and road, the pipe is lifted and supported on the higher pipe support on both sides of the railway and road to form the higher pipe support of the ∏ shaped pipe
2.1.15
suspension pipe support
pipe supports composed of single-post pipe support, inclined suspension cable, horizontal tie rod, profile steel cross beam and stay cable at the end, spaced at 9m~12m generally
2.1.16
long-arm pipe support
pipe support formed by extending long arm in the longitudinal direction from a single-post pipe support and installing cross beam on it to support pipes according to the requirements of the allowable span of pipes
2.1.17
special pipe support
pipe support at a height greater than 10m for supporting pipes with diameter greater than or equal to 500mm and less than or equal to 3 in number
2.1.18
pipe support with vibration pipes
pipe support with vibration pipes laid on, and the weight of vibration pipes accounting for more than 30% of the total weight of pipes
2.1.19
longitudinal beam pipe support
structure in which longitudinal beams are arranged between pipe support columns along the axial direction of pipes, and a certain number of cross beams are arranged on or under the longitudinal beams according to the allowable spacing of pipes to lay pipes with small diameters
2.1.20
truss pipe support
structure in which trusses with larger span are arranged between pipe support columns along the axial direction of pipes, and cross beams are arranged (or suspended) at the upper chord and lower chord according to the allowable spacing of pipe-supporting members to lay pipes with small diameters
2.1.21
mixture structure pipe support
structure with the bottom beam column of reinforced concrete structure, the upper pipe support of steel structure, or the transverse beam column of reinforced concrete structure and the longitudinal direction of steel structure pipe support
2.1.22
transversal beam
supporting member arranged on the longitudinal connection structure of pipe rack, such as longitudinal beam and truss, to support the pipe with small diameter
2.1.23
anchor pipe support bracing
column bracing set on the anchor pipe support to bear large horizontal thrust
2.1.24
expansion joint
element arranged on a pipe to absorb thermal expansion, cold contraction and other displacements of the pipe
2.1.25
reacting force from expansion joint
after the compensator is compressed or stretched under the action of thermal expansion or cold contraction of pipes, as the compensator has certain elasticity, a deformation force in the opposite direction will be generated and transmitted to the anchor pipe support through pipes
2.1.26
tie-up coefficient
coefficient indicating the tie-up action of pipes without thermal deformation or with stable thermal deformation on the same pipe support with multiple pipes to prevent the deformed pipe from pushing the pipe support, which partially offsets the horizontal thrust on the pipe rack
2.1.27
core area
area without zero stress area between the bottom surface of pipe support foundation and subsoil when the load acts on this area in the calculation of pipe rack foundation
1 General provisions
2 Terms and symbols
2.1 Terms
2.2 Symbols
3 Basic requirements
3.1 Classification of pipe supports and sleepers
3.2 Layout of pipe supports and sleepers
3.3 Structure selection
3.4 Material of pipe supports and sleepers
3.5 Calculation of pipe supports
3.6 Deformation checking
4 Loads
4.1 Tie-up coefficient and position of horizontal loads
4.2 Vertical loads
4.3 Horizontal loads
4.4 Wind loads
4.5 Ice and snow loads
5 Seismic action and seismic checking
5.1 General requirements
5.2 Seismic action
5.3 Seismic checking
6 Pipe supports with vibration pipes
6.1 Vibration pipes
6.2 Pipe support with vibration pipes
6.3 Vibration reduction measures for pipe support with vibration pipes
7 Load and seismic action combination
8 Pipe supports
8.1 Single-post pipe support
8.2 Cross-over pipe support
8.3 Special pipe support
8.4 Suspension pipe support
9 Pipe racks
9.1 General
9.2 Simplified calculation of plane model
9.3 Overall calculation of spatial model
10 Subgrade and foundation
10.1 General requirements
10.2 Subgrade
10.3 Foundation
10.4 Details for foundations
11 Details for pipe supports
11.1 Details for reinforced concrete pipe supports
11.2 Details for steel structure pipe supports
11.3 Details for mixture structure pipe supports
12 Pipe sleepers
12.1 Pipe sleeper calculation
12.2 Precast concrete pipe sleepers
12.3 Cast-in-site concrete pipe sleepers
12.4 Details for pipe sleepers
13 Anticorrosion design for pipe supports
14 Fire protective layer design for steel pipe supports
14.1 General requirements
14.2 Details for fire protective layer
15 HSE management
Annex A Torsional stresses of beam
Annex B Technical specifications of steel wire strand
Annex C Calculation equation of anchor pipe support horizontal force from ∏ shaped compensator
Explanation of wording in this code
List of quoted standards
