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DL/T 5085-1999

Chinese Standard: 'DL/T 5085-1999'
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Detail Information of DL/T 5085-1999; DL/T5085-1999; DLT 5085-1999; DLT5085-1999
Description (Translated English): Code for design of steel-concrete composite structure
Sector / Industry: Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard: P27
Word Count Estimation: 62,000
Date of Issue: 2/8/1999
Date of Implementation: 1/10/1999
Older Standard (superseded by this standard): DLG J99-1991
Quoted Standard: GB 15-1991; GB 700-1988; GB 50204-1992; GB 50205-1995; GB 50260-1996; GBJ 9-1987; GBJ 10-1989; GBJ 11-1989; GBJ 17-1988; GBJ 68-1984; GBJ 83-1985; GBJ 107-1987; DL 5022-1993; DL/T 5095-1999; SDJ 107-1987
Drafting Organization: North China Electric Power Design Institute
Administrative Organization: Power Planning and Design
Summary: This standard specifies the steel concrete structures, concrete encased steel structure and steel - design calculation methods and concrete composite beam construction requirements for new construction, expansion or renovation thermal power plant (hereinafter referred to as the plants) building (structure) building material Steel - concrete composite structure design. Steel general industrial and civil buildings (structures), the concrete structure design combinations can be implemented by reference.

P27
Record Number. 4007 1999 DL
PROFESSIONAL POWER STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
D Ln· 5085 -· J 999
Code for Design of Steel-concrete
Composite Structure
ISSUED ON. AU~UST 2, 1999
IMPLEMENTED ON. OCTOBER 1, JL)'J')
Issued hy State Jt.conomic .a.nd Trade Commission of the People's Rc1,ublic of
China
Contents
Scope ... . ... . ... ... ... .. ... .. ... .. . 1
2 Normative References ... ... ... ... ... .. ... ... .. ... ... .. ... .. .. .. ... ... ... ... 2
3 General Provisions ... ... ... ... 3
4 Main Terms and Main Symbols .. .. ... .. ... ... ... ... ... ... ... ... .. ... 4
4.1 Main Terms ... ... ... ... ... ... ... ... ... 4
4.2 Main Syrnbols ... .. ... ... ... ... ... 6
5 Basic Rules ... ... ... ... ... ... ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... ... ... 11
6 Concrete Fi lled Steel Tubular Structure ... ... ... ... ... .. ... ... ... .. 12
6.1 General Rules ... ... ... ... .. ... ... ... 12
6.2 Materials ... ... ... ... ... .. ... ... ... ... ... ... ... ... ... .. .. ... ... ... 12
6.3 Calculation of Member Bearing Capacity ... ... .. .. ... ... ... ... .. ... 19
6.4 Structures .. ... ... ... ... ... ... ... ... ... ... ... 22
6.5 Joint and Connection ... , ... ... .. ... ... ... ... .. ... .. ... ... ... ... ... ... ... 27
7 Steel Encased Reinforced Concrete Structure ... ... ... ... ... ... .. 3 7
7. 1 General Provisions ... ... ... ... ... .. ... .. ... .. ... ... ... ... .. .. ... ... .. .. ... 3 7
7 .2 Materials ... ... ... ... ... ... .. ... .. ... ... ... ... ... . 3 7
7.3 Calculation Principles ... ... ... ... ... ... ... ... .. .. 37
7.4 Bearing Capacity Calcu lation of Members ... ... ... ... ... .. .. .. ... ... ... ... ... ... 40
7.5 Loadbearing Framework of Stee l Encased Re inforced Concrete ... ... .. 43
7 .6 Constructional Requirements ... ... ... ... ... ... ... ... .. .. ... 4 7
8 Steel -concrete Composite Beam Structure ... ... ... ... ... ... ... .. .. ... ... ... ... ... ... 52
8.1 General Provisions ... ... ... ... .. ... ... ... ... 52
8.2 Materials ... ... .. ... .. ... .. ... ... ... ... ... .. ... ... 53
8.3 Calculation of the Bearing Capacity of Compos ite Beam ... ... .. ... ... ... .. ... 53
8.4 Recalculation of Composite Beam at Serviceability Limit States ... ... ... ... ... ... .. 57
8.5 Calcu lation of Shear Connector .. ... .. ... ... ... ... ... ... ... ... ... ... .. ... ... ... 61
8.6 Calcu lation of Haunch and Flange Plate ... ... ... ... ... .. .. ... ... 64
8. 7 Constructional Requirements ... ... ... ... ... .. ... 65
Appendix A (Normative) Calculation Formulae for the Deformation of Continuous
Cotnposite Bean1 ... .. ... ... ... ... ... ... ... ... ... 69
Appendix B (Normative) Inspection Requirements on the Material Quality, External
Dimensions and Welding Quality of Stud Connectors ... .. ... .. ... ... 71
Appendix C (Normative) Explanation of Wording in this Standard ... 73
1 Scope
This code specifies design and calculation methods and structure requirements for
concrete filled steel tubular structure, steel encased reinforced concrete structure and steel-
concrete composite beam and is applicable to the design of steel-concrete compos ite structure
of buildings (structures) in newly built, expanded or rebuilt thermal power plants (hereinafter
referred to as "power plant"). The design of steel-concrete composite structures of general
industrial and civil buildings (structures) may also refer to this code.
2 Normative References
The following standards contain prov1s1ons which, through reference in this text,
constitute provisions of this standard. At time of publication, the editions indicated were valid.
All standards are subject to revision, and parties to agreements based on this standard are
encouraged to investigate the possibility of applying the most recent editions of the standards
indicated be low.
CB 15 - 91 Low Alloy Structural Steel
GB 700- 88 Carbon Structural Steels
GB 50204- 92 Code for Construction and Acceptance of Concrete Structures
GB 50205 - 1995 Code for Construction and Acceptance of Steel Structure Engineering
GB 50260- 1996 Code for Seismic Design of Electric Power Installations
GBJ 9- 87 Load Code for the Design of Building Structures
GBJ 10- 89 Code for Design of Concrete Structures
GBJ 11 - 89 Code for Seismic Design of Bui ldings
GBJ 17- 88 Code for Design of Steel Structures
GBJ 68- 84 Unified Standards for the Design of Structures
GBJ 83 - 85 Design of Structures-General Symbols Units of Measurement and Basic
Terms
GBJ l 07- 87 Standard for Inspection and Evaluation Concrete Strength
DL 5022- 93 Technical Stipulation for the Design of Civil Structure of Thermal Power
Plant
DL/T 5095 - 1999 Technical Code for Designing Load of Main Building in Fossil Fuel
Power Plant
SDJ 107- 87 The Code of Erection and Acceptance for Power Plant Construction
(Construction Engineering Section)
3 General Provisions
3.0.1 This code was formulated with a view to implementing the national technical and
economic policies and living up to state-of-the-art technologies, economy and rationality,
safety and usability as well as ensuring quality in the design of steel-concrete composite
structure.
3.0.2 This code was establ ished subject to the principles specified in the current national
standard ·'Unified Standards for the Design of Structures'' (GBJ 68- 84).
3.0.3 Symbols. measurement units and basic terms used in this code are adopted according
to those specified in the current national standard "Design of Structures-General Symbols
Units of Measurement and Basic Terms" (GBJ 83- 85). Tn addition. respective special
symbols of these three kinds of structures also are specified in this code by international
standard symbols or acronyms of English words according to the different characteristics and
requirements of these structures.
3.0.4 Not only the requirements stipulated in this code, but those in the current national
standards ·'Code for Design of Steel Structures" (GBJ 17 - 88), "Code for Design of Concrete
Structures" (GBJ 10-89), "Code for Seismic Design of Bui ldings" (GBJ 11 - 89) and "Code
for Seismic Design of Electric Power Installations" (GB 50260-96) a lso shall be complied
with.
3.0.5 In the design in accordance with this code. the load design shall be in accordance with
those spec ified in the current national standards ·'Load Code for the Design of Building
Structures'' (GBJ 9-87). professional power standard "Techn ical Stipulation for the Des ign of
Civil Structure of Thermal Power Plant" (DL 5022 - 93) and "Technical Code for Designing
Load of Main Building in Fossil Fuel Power Plant" (DLff 5095 - 1999). Material and
construction qua li ty shall be in accordance with those requirements specified in the current
national standards '·Code for Construction and Acceptance of Steel Structure Engineering"
(GB 50205 - 95), "Code for Construction and Acceptance of Concrete Structures" (GB 50204
- 92) and professional power standard ·'The Code of Erection and Acceptance for Power Plant
Construction" (Construction Engineering Section) (SDJ I 07-87) as wel l as other relevant
standards. The required weld quality classes and additional assured items of mechanical
properties and chemical compositions required for stee ls also shall be indicated for the design
of the relevant steel structures. Inspection and evaluation of concrete strength shall be in
accordance with those requirements specified in the current national standard "Standard for
Inspection and Evaluation Concrete Strength'' (GBJ 107-87).
The design of steel-concrete composite structure in special regions and specific
environment still shall be compli ed with the relevant regu lati ons specified in specific codes.
4 Main Terms and Main Symbols
4.1 Main Terms
4.1.1 Steel-concrete composite structure
Structures are composed by formed steel and concrete or reinforced concrete, for
instance concrete filled steel tubular structure. stee l encased reinforced concrete structure, and
steel-concrete composite beam structure.
4.1.2 Concrete filled steel tubular structure
Structure is formed by filling concrete in the steel tube (referring to round steel tube).
4.1.3 Compos ite compressive strength
The maximum nominal compress ive stress is withstood by the compound sections of
concrete-filled steel tubes .
4.1.4 Composite shear strength
The max imum nomina l shear stress is withstood by the compound sections of concrete-
filled steel tubes.
4.1.5 Composite compress ive mQdulus of e lasticity
Ratio of the nominal normal stress to the corresponding normal strain on the section
when the compound section of concrete-filled stee l tube is compressed unidirectionally and it......
   
 
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