1 Scope
This specification specifies the structural design of buildings in petrochemical industry (hereinafter referred to as buildings), including load and seismic action, calculation and design of base and foundation, structure type of buildings, as well as the calculation, design, construction and materials related to reinforced concrete and steel structure factory buildings, masonry structure and semi-underground pumping shelter.
This specification is applicable to the structural design of buildings in petrochemical industry, but not to the structural design of explosion resistant buildings 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 reference, the latest edition (including any amendments) applies.
GB 50003 Code for design of masonry structures
GB 50007-2011 Code for design of building foundation
GB 50009 Load code for the design of building structures
GB 50010 Code for design of concrete structures
GB 50011-2010 Code for seismic design of buildings
GB 50017-2003 Code for design of steel structures
GB 50046 Standard for anticorrosion design of industrial constructions
GB 50068 Unified standard for reliability design of building structures
GB 50160 Fire prevention code of petrochemical enterprise design
GB 50223 Standard for classification of seismic protection of building constructions
GB 50453 Standard for classification of seismic protection of buildings and special structures in petrochemical engineering
GB/T 700 Carbon structural steels
GB/T 1228 High strength bolts with large hexagon head for steel structures
GB/T 1229 High strength large hexagon nuts for steel structures
GB/T 1230 High strength plain washers for steel structures
GB/T 1231 Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures
GB/T 1591 High strength low alloy structural steels
GB/T 3632 Sets of torshear type high strength bolt hexagon nut and plain washer for steel structures
GB/T 5117 Carbon steel covered electrodes
GB/T 5118 Low alloy steel covered electrodes
GB/T 5313 Steel plates with through-thickness characteristics
GB/T 5780 Hexagon head bolts - Product grade C
GB/T 5782 Hexagon head bolts
GB 4053 Safety requirements for fixed steel ladders and platform
JC 861 Grout for concrete small hollow block
SH/T 3132 Design specification for reinforced concrete tanks in petrochemical industry
SH 3137 Technical specification of fire protection for steel structures in petrochemical industry
SH/T 3603 Technical specification for the coating anticorrosion of steel structures in petrochemical industry
3 Major symbols
For the purposes of this specification, the following major symbols apply.
3.1 Symbols of action and action effect
Ftk——Standard value of friction on top of equipment support;
GBK——Standard value of the permanent load of equipment and medium acting on equipment support under normal operation condition;
MI-I, MII-II——Design bending moment at section I-I and section II-II of column edge respectively;
Mx——Design bending moment in X-direction acting on the centroid of the foundation base;
My——Design bending moment in Y-direction acting on the centroid of the foundation base;
∑M——Sum of the design value of vertical load and its eccentric moment of strip foundation under columns to the midpoint moment of foundation in the basic combination of load effect;
Mm——Design bending moment of the support in the basic combination of load effects by an empirical bending moment coefficient method of inverted beam method;
Mms——Design mid-span bending moment in the basic combination of load effects by an empirical bending moment coefficient method of inverted beam method;
M——Design bending moment at the checking section when checking the hoisting strength of prefabricated reinforced concrete columns;
F——Design value of vertical load acting on the centroid of the foundation top in the basic combination of load effects;
∑F——Design value of the resultant vertical force in the strip foundation under column in the basic combination of load effects;
pkmax, pkmin——Maximum pressure and minimum pressure at the edge of foundation bottom in the standard combination of load effects;
pI, pII——Design value of the maximum net reaction force at the edge of foundation bottom in the basic combination of load effects;
pjmax, pjmin——Design value of the maximum and minimum net reaction force at the foundation bottom in the basic combination of load effects;
p——Design value of uniformly distributed net reaction force at the foundation bottom in the basic combination of load effects;
3.2 Material property
np——Stiffness ratio between platform column and factory building column;
∑EpJp——Section stiffness of all platform columns corresponding to the same row of factory building columns;
∑ExJx——Section stiffness of all factory building columns in a row;
E——Elastic modulus of masonry;
I——Inertia moment of masonry transverse wall.
3.3 Geometric parameters
A——Short edge width of the foundation bottom;
AS——Area of tensile bar in checking section;
B——Long edge width of the foundation bottom;
a, b——Dimension of the short side and the long side of a column respectively;
Cx, Cy——Distance between the action point of vertical load and the nearest edge of foundation in X-axis and Y-axis respectively;
ex, ey——Eccentricity value of the axial force of the foundation on the long and short sides respectively;
h——Height of column section;
h0——Effective height of the cross section of bending moment action plane;
H——Column height;
H1——Upper section height of single-stepped variable-section column;
H2——Lower section height of single-stepped variable-section column;
H0——Calculated length of the column with equal section in the bent plane of the single-story steel structure factory building;
H01——Calculated length of the upper section of single-stepped column in the bent plane of the single-story steel structure factory building;
H02——Calculated length of the lower section of single-stepped column in the bent plane of the single-story steel structure factory building;
Hx——Distance from the top surface of foundation to the lower point of connection between roof truss or wind-resistant truss and column;
Hy——Maximum distance between two points in the column width direction. Except the connection point between the column and the roof truss and foundation, the wall beam connected with anchor bars and the wallboard rigidly connected with the column can be regarded as fulcrums;
L——Length of foundation beam and the distance between the centers of support rod nodes;
I——Average value of calculated span between adjacent columns in empirical moment coefficient method of inverted beam method.
3.4 Others
μ——Effective length ratio of column with equal section of single-story steel structure factory building;
μ1, μ2——Effective length ratio of upper section and lower section of single-stepped column of the single-story steel structure factory building;
∆1——Horizontal displacement of the column top when unit horizontal force acts on the top of the column with the top surface of the high cup-type foundation as the fixed end;
∆2——Horizontal displacement of the column top when unit horizontal force acts on the top of the column with the bottom of the short column as the fixed end.
Foreword i
1 Scope
2 Normative References
3 Major symbols
3.1 Smbols of action and action effect
3.2 Material property
3.3 Geometric parameters
3.4 Others
4 Basic requirements
5 Load
5.1 General requirements
5.2 Floor live load
5.3 Roof load
5.4 Dynamic load
5.5 Other loads and temperature effect
6 Base and foundation
6.1 General requirements
6.2 Foundation type
6.3 Calculation of foundation
6.4 Foundation structure
7 Structure type
7.1 Principle of structure type
7.2 Structure type
8 Single-story factory building with reinforced concrete column
8.1 General requirements
8.2 Essentials in calculation
8.3 Column
8.4 Bracing system
8.5 Roof structure
8.6 Crane beam
8.7 Envelop structure and others
9 Multi-story reinforced concrete factory building
9.1 General requirements
9.2 Internal force analysis of frame structure
10 Single-story steel structures factory building
10.1 General requirements
10.2 Steel and connecting materials
10.3 Essentials in calculation
10.4 Column
10.5 Bracing system
10.6 Roof structure
10.7 Crane beam
10.8 Envelope structure
10.9 Fire prevention and corrosion prevention
11 Masonry structure
11.1 General requirements
11.2 Material classification and strength grade of masonry structure
11.3 Calculation requirements
11.4 Constructional requirements
12 Semi-underground pumping shelter
12.1 General requirements
12.2 Calculation requirements
12.3 Constructional requirements
Annex A (Normative) Dynamic coefficient μ
Annex B (Informative) Sectional dimension of common column
Explanation of wording in this specification
