32m/900t prestressed concrete pretension box beam static loading test method

A static load test and concrete technology, applied in the field of static load test, can solve the problems of unable to meet the test requirements, unable to design 32m pretensioned box girder, construction technology and construction quality box girder crack resistance and strength performance verification.

Active Publication Date: 2008-01-09
CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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  • Abstract
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  • Application Information

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Problems solved by technology

The 32m / 900t class pre-tensioned box girder with 3 holes on the Hening-Ningbo Railway, in addition to the anti-cracking test, also needs to be subjected to a cracking test and a maximum 2.0-level damage test. Exceeding the loading force under the 1.2-level load, the existing test bench and test method cannot meet the test requirements, and cannot verify the design, construction process, construction quality, crack resistance and strength performance of the 32m pre-tensioned box girder

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  • 32m/900t prestressed concrete pretension box beam static loading test method
  • 32m/900t prestressed concrete pretension box beam static loading test method

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] 32m / 900t prestressed concrete pretensioned box girder static load test method, the test bench includes a test bench 1 with two ends, the test bench 1 is equipped with a foundation beam 6 of reinforced concrete frame structure, and the foundation beam 6 is set for loading counterweight 7 The end beam, the middle beam, and the foundation beam 6 are pre-embedded with anchor rods 5, and the anchor rods 5, suspenders 4 and pole beams 3 are all steel structures connected by bolts, as shown in Figures 1 and 2.

[0019] The test steps are as follows:

[0020] First, lift the counterweight 7 to the end beam between the two foundation beams 6 of the static load test bench, then move the static load test pre-tensioned box girder 2 to the pedestal on the foundation beam 6 and install the support, and pass the tie rod through The test beam body pre-embeds th...

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Abstract

The invention discloses a test procedure of 32m/900t pre stress pre open box girder concrete box, it includes building testing counter, laying test beam body, fixing balance weight and setting test equipment, and doing load test of three circulation by ordering step by step, and dong crack test for the 32m/900t pre open box girder effectively, splitting test and breaking test, dong experiment for the design of 32m pre open box girder, construct artwork, workmanship and the anti split and intensive properties of box girder.

Description

technical field [0001] The invention relates to a static load test method, in particular to a static load test bench and a static load bending test method which can be applied to the anti-crack test, crack test and destruction test of a 32m / 900t prestressed concrete box girder. Background technique [0002] At present, 32m / 900t class prestressed concrete box girders are used in the Beijing-Tianjin Intercity Railway, Hening, Hewu, Zhengxi and other passenger-dedicated bridges. The force is about 1400t, and the static load test bench used is about 1500t. The 32m / 900t class pre-tensioned box girder with 3 holes on the Hening-Ningbo Railway, in addition to the anti-cracking test, also needs to be subjected to a cracking test and a maximum 2.0-level damage test. Exceeding the loading force under the 1.2-level load, the existing test bench and test method cannot meet the test requirements, and cannot verify the design, construction technology, construction quality, crack resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12E02D33/00
Inventor 唐浩先邹宏伟王强韩伟陈杰王心利钱纪民孙祖红周文武钟士全申超袁东周玉兴钟卫翔
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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