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GB/T 37439-2019Precast post-tensioned prestressed concrete simply supported beams for high-speed railways (English PDF)

高速铁路预制后张法预应力混凝土简支梁

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 10, 2019

Implementation date

December 1, 2019

Scope

GB/T 37439-2019 is the English-translated version of 高速铁路预制后张法预应力混凝土简支梁.

China's national standard for the precast post-tensioned prestressed concrete simply supported box girders used on high-speed railways. It specifies the technical requirements, the test methods, the inspection rules, the marking and manufacturing certificate, and the storage and transport.

These girders are the single most numerous major structural component of the Chinese high-speed network: most of the line is on viaduct, and most of that viaduct is a succession of thirty-two metre box girders, each weighing around nine hundred tonnes, cast in a yard beside the alignment and placed by a launching machine that runs along the completed deck.

Standardising them is what made the construction rate possible.

The requirements that matter are dimensional and dynamic rather than merely structural: the track above must stay within millimetres of its designed geometry for decades, so the girder's camber, its long-term creep and shrinkage, and its natural frequency under a passing train are all specified alongside its strength.

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Document preview — GB/T 37439-2019

National Standard of the People's Republic of China

ICS: 45.040
Classification: S 05

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

ForewordIII
1 Scope1
2 Normative references1
3 Technical requirements2
4 Test method10
5 Inspection rules10
6 Marking and Manufacturing Technology Certificate19
7 Storage and Transportation20
Appendix A (Normative Appendix) Number of prefabricated post-tensioned prestressed concrete simply supported beam specimens21
Appendix B (Normative Appendix) Test Methods for Pipe Grouting Materials22
Appendix C (informative) Manufacturing Technology Certificate Example28

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard is proposed and managed by the State Railway Administration.

This standard was drafted. China Railway Research Institute Railway Construction Institute, China Railway Engineering Design Consulting Group Co., Ltd., China Railway

Road Economic Planning Institute.

The main drafters of this standard. Niu Bin, Xu Shengqiao, Hu Zouting, Deng Yunqing, Su Yonghua, Gao Ce, Wang Leran, Wei Feng, Ren Weidong, Ma Lin, Ge Kai, Ban Xinlin.

Prefabricated post-tensioning of high-speed railway

Concrete simply supported beam

1 Scope

This standard specifies the technical requirements, inspection methods, inspection rules, markings and pre-stressed prestressed concrete simply supported beams of high-speed railways.

Manufacturing technical certificate, storage and transportation.

This standard applies to high-speed railway prefabricated post-tensioned prestressed concrete simply supported beams (hereinafter referred to as "precast beams").

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 176 cement chemical analysis method

GB/T 197 ordinary thread tolerance

GB/T 700 carbon structural steel

GB/T 1346 Cement standard consistency water consumption, setting time, stability test method

GB/T 1499.1 Steel for reinforced concrete - Part 1. Hot rolled round bars

GB/T 1499.2 Steel for reinforced concrete - Part 2. Hot rolled ribbed bars

GB/T 5224 steel wire for prestressed concrete

GB/T 5836.2 Hard polyvinyl chloride (PVC-U) pipe fittings for building drainage

GB/T 8077 concrete admixture homogeneity test method

GB/T 17671 Cement mortar strength test method (ISO method)

GB/T 20221 Non-pressure buried sewage, hard polyvinyl chloride (PVC-U) pipe for wastewater

GB/T 50080 Standard Test Method for Performance of Concrete Mixtures

GB/T 50081 Standard test method for mechanical properties of ordinary concrete

GB/T 50082 standard test method for long-term performance and durability of ordinary concrete

JB/T 5067 steel parts powder zinc infiltration JGJ/T 10 Concrete Pumping Construction Technical Regulations

Remaining clauses in the full document

3 Technical requirements
4 Test method
5 Inspection rules
6 Marking and Manufacturing Technology Certificate
7 Storage and Transportation

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 31 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 1499.1 · GB/T 1499.2 · GB/T 50081

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