Detail of SH 3147-2014

Introduction of SH 3147-2014

1 Scope This Specification specifies the fundamental requirements for seismic action, structural seismic calculation and seismic measures of structures in petrochemical industry. This Specification is applicable to seismic design for structures in petrochemical industry in areas with seismic precautionary intensity ranging from 6 to 9. It is not applicable to the pipes itself serving as stressed structures and other large cross-over pipe racks across the rivers. Notes: 1 "Intensities 6, 7, 8 and 9" in this Specification is short for "seismic precautionary intensities of 6, 7, 8 and 9". 2 Structures in petrochemical industry include: a) Frame-bent structure composed of reinforced concrete frame, frame-shear wall structure and bent; b) Load-bearing steel frame, steel bent, steel frame-bent structure composed of steel frame support and steel bent; c) Petrochemical tower-type equipment foundation and vertical tank foundation with total height above ground greater than or equal to 10m; d) Frame type foundation of parallel and coaxial reactors and regenerators in catalytic cracking unit; e) Foundations of atmospheric vertical steel cylindrical tanks; f) Steel spherical tank foundations supported by steel frames; g) Foundations of horizontal exchangers and horizontal tanks; h) Foundations of tubular heater, converter and vertical heater; i) Ethylene cracking heater frames and foundations; j) Independent pipe racks, spanning pipe racks, longitudinal beam pipe racks and special pipe racks; k) Exhaust stack and torch-tower frames; l) Counterflow-type mechanical draught cooling towers and cross-flow mechanical draught cooling towers; m) Ground, underground and semi-underground reinforced concrete pools; n) Cast-in-place concrete silos which store bulk materials and are round or rectangular in plane shape and urea granulation-towers; o) Independent chimneys, reinforced concrete chimneys and landing single-tube steel chimneys; p) Reinforced concrete fire-dikes. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 5313 Steel plates with through-thickness characteristics GB 18306 Seismic ground motion parameters zonation map of China GB 50007 Code for design of building foundation GB 50011 Code for seismic design of buildings GB 50017 Code for design of steel structures GB 50191 Design code for antiseismic of special structures GB 50204 Code for acceptance of constructional quality of concrete structures GB 50330 Technical code for building slope engineering GB 50453 Standard for classification of seismic protection of buildings and special structures in petrochemical engineering SH/T 3055 Specification for design of pipe racks in petrochemical industry 3 Terms and definitions For the purposes of this specification, the following terms and definitions apply. 3.1 design basic acceleration of ground motion design value of seismic acceleration with exceeding probability of 10% during the 50-year design reference period   3.2 seismic precautionary intensity seismic intensity approved as the seismic precautionary basis of a region according to the authority prescribed by the state, generally the seismic intensity with exceeding probability of 10% during the 50 years is adopted 3.3 seismic precautionary criterion scale for measuring the seismic precautionary requirements, which is determined by seismic precautionary intensity or design parameters of ground motion and seismic fortification categories of structures 3.4 seismic action dynamic action of structure caused by ground motion, including horizontal seismic action and vertical seismic action 3.5 design parameters of ground motion seismic acceleration (velocity and displacement) time history curve, acceleration response spectrum and peak acceleration for seismic design 3.6 design characteristic period of ground motion periodic value corresponding to the start point of descending segment reflecting such factors as earthquake magnitude, epicentral distance and site category in the seismic influence coefficient curve used for seismic design 3.7 seismic influence coefficient statistical average ratio of the maximum acceleration response to the gravity acceleration of single-mass-point elastic system under seismic action

Contents of SH 3147-2014

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols 5 Fundamental requirements of seismic design 5.1 General requirements 5.2 Categories and criteria for seismic precaution 5.3 Seismic influences 5.4 Site and base foundation 5.5 Structural system and design requirements 5.6 Structural analysis 5.7 Seismic isolation and energy-dissipation design 5.8 Structural materials and construction 5.9 Anchor bolts 5.10 Non-structural components 6 Site, base and foundation 6.1 Site 6.2 Natural base and foundation 6.3 Liquefiable soil base 6.4 Seismic subsidence of soft cohesive soil base 6.5 Pile foundation 6.6 Slope seismic stability 7 Seismic action and seismic checking 7.1 General requirements 7.2 Horizontal seismic action and action effect calculation 7.3 Vertical seismic action calculation 7.4 Seismic checking of sections 7.5 Seismic deformation checking 8 Reinforced concrete frame-bent structure 8.1 General requirements 8.2 Seismic calculation 8.3 Details for frames 8.4 Details for bents 8.5 Details for frame-shear walls 9 Steel frame-bent structures 9.1 General requirements 9.2 Seismic calculation 9.3 Details of design 9.4 Details for steel frames and bents 10 Foundations of petrochemical tower-type equipment 10.1 General requirements 10.2 Seismic calculation 10.3 Details for equipment foundations 11 Frames supporting reactor and regenerator 11.1 General requirements 11.2 Seismic calculation 11.3 Detailing for frames 12 Foundations of atmospheric vertical cylindrical tanks 12.1 General requirements 12.2 Seismic calculation 12.3 Detailing for foundations 13 Foundations of spherical tanks 13.1 General requirements 13.2 Seismic calculation 13.3 Details for foundations 14 Foundations of exchanger and horizontal tanks 14.1 General requirements 14.2 Seismic calculation 14.3 Details for foundations 15 Foundations of tubular heaters 15.1 General requirements 15.2 Seismic calculation 15.3 Details for foundations 16 Structures and foundation supporting cracking heaters 16.1 General requirements 16.2 Seismic calculation 16.3 Details for structures and foundations 17 Pipe racks 17.1 General requirements 17.2 Seismic calculation 17.3 Details for pipe racks 18 Frames of exhaust stacks and torch-towers 18.1 General requirements 18.2 Seismic calculation 18.3 Details for exhaust stacks and frames of torch-towers 19 Cooling towers 19.1 General requirements 19.2 Seismic calculation 19.3 Details for cooling towers 20 Pools 20.1 General requirements 20.2 Seismic calculation 20.3 Details for reinforced concrete pools 21 Reinforced concrete silos and granulation-towers 21.1 General requirements 21.2 Seismic calculation 21.3 Details for reinforced concrete silos and granulation-towers 22 Chimneys 22.1 General requirements 22.2 Seismic calculation 22.3 Details for chimneys 23 Fire-dikes 23.1 General requirements 23.2 Seismic calculation 23.3 Details for dikes Annex A (Normative) Conditions of frame-bent structure calculated as plane structure and modified coefficient of seismic action effect Annex B (Normative) Seismic checking for section in the core zone of frame beam-column joints Annex C (Informative) Simplified methods for seismic calculation of wind resisting column for gable wall Annex D (Informative) Lateral displacement stiffness of props for column-supported reinforced concrete square silos with beams Explanation of wording in this specification