DL/T 5085-2021 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
DL/T 5085-2021	RFQ	ASK	3 days	(Design specification for steel-concrete composite structure)	Valid
DL/T 5085-1999	155	Add to Cart	Auto, < 3 mins	Code for design of steel-concrete composite structure	Obsolete

Similar standards

GB 50205   GB 50017   

Basic data

Standard ID: DL/T 5085-2021 (DL/T5085-2021)
Description (Translated English): (Design specification for steel-concrete composite structure)
Sector / Industry: Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard: P27
Word Count Estimation: 168,124
Issuing agency(ies): National Energy Administration

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

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.

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 its longitudinal nominal stress is linear with the strain. 4.1.6 Composite shear modulus Ratio of the nominal shear stress to the corresponding shear strain on the section when the compound section of concrete-filled steel tube is sheared unid irectionally and its compos ite nomina l stress is linear with the strai n. 4.1. 7 Confining coeffici ent Comprehens ive parameter 1s used to reflect the geometrica l characteristics of the concrete-filled steel tube's compound section and physical properties of the construct ional AJ",. materials, its characteristic value is indicted in i;, i;= A r. ; while its design value is cJ ck . d. d. ~ ~ AJ ... 111 1cate 111 '.lo. '.lo=--·- . Acfck 4.1.8 Stiffener ring pl ate Ring gusset plate is installed to construct rigid joints fo r concrete-filled stee l tubes. 4.1.9 Steel encased re inforced concrete structure 4.2 Main Symbols 4.2.1 Actions and action effect ... ......

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