1 Scope
This specification specifies the load and load effect, structural calculation and structure for foundations of exchanger (including condensing cooler, cooler and heat exchanger), horizontal vessel and vertical vessel with an overall height not greater than 10m in petrochemical industry.
This specification is applicable to the design of foundation for the exchanger (including condensing cooler, cooler and heat exchanger), horizontal vessel and vertical vessel in petrochemical industry.
2 Normative references
The following documents are indispensable for the application of this specification. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 50009 Load code for the design of building structures
GB 50010 Code for design of concrete structures
GB 50011 Code for seismic design of buildings
GB 50046 Code for anticorrosion design of industrial constructions
SH/T 3030 Specification for design of tower-type equipment foundation in petrochemical industry
3 Symbols
3.1 Geometric parameters
A——the wind area of equipment in the action direction of wind load;
Bs——the short term rigidity of buttress and support;
D——the outside diameter of vessel;
H——the height from the top of foundation slab to the top of buttress or bracket;
△l——the thermal expansion of horizontal vessel under normal operating state;
3.2 Action and action effect
EEk——the standard value of horizontal seismic action;
Fbk——the standard value of core-pulling force;
Fdk——the standard value of elastic force;
Ftk——the standard value of friction;
Fω——the standard value of wind load;
GBk——the standard value of permanent load under normal operating state;
Gbk——the standard value of tube bundle dead weight of exchanger;
GJk——the standard value of foundation dead weight;
——the standard value of dead weight of foundation above ground;
Gjk——the standard value of medium load under normal operating state;
Qk——the standard value of platform live load;
qk——the standard value of wind load perpendicular to the surface of the vessel;
R——the resistance design value of foundation component;
αmax——the maximum value of frequent horizontal seismic influence coefficient;
wo——the basic wind pressure;
S——the design value of foundation load effect combination;
Sbk——the load effect value calculated according to the standard value of core-pulling force;
Sdk——the load effect value calculated according to the standard value of elastic force;
SEk——the action effect value calculated according to the standard value of seismic action;
SGK——the load effect value calculated according to the standard value of permanent load under normal operating state;
SJk——the load effect value calculated according to the standard value of foundation dead load;
Sjk——the load effect value calculated according to the standard value of medium load under normal operating state;
Snk——the load effect value calculated according to the standard value of permanent load of exchanger during shutdown overhaul;
SQk——the load effect value calculated according to the standard value of platform live load;
SRk——the load effect value calculated according to the standard value of vessel permanent load under water-filling and pressure-testing state;
Ssk——the load effect value calculated according to characteristic water filling load in vessel and pipeline during shutdown overhaul;
Stk——the load effect value calculated according to the standard value of friction;
Sω——the load effect value calculated according to the standard value of wind load;
——the load effect value calculated according to the characteristic value of wind load under water-filling and pressure-testing state.
Foreword i
1 Scope
2 Normative references
3 Symbols
4 Basic requirements
4.1 Foundation type
4.2 Foundation design
4.3 Anchor bolt
4.4 Anti-corrosion requirements
4.5 Foundation materials
5 Exchanger foundation
5.1 Load, seismic action and load combinations
5.2 Structural calculation
5.3 Foundation structure
6 Horizontal vessel foundation
6.1 Load, seismic action and load combinations
6.2 Structural calculation
6.3 Foundation structure
7 Vertical vessel foundation
7.1 Load, seismic action and load combinations
7.2 Structural calculation
7.3 Foundation structure
Explanation of wording in this specification
