Plate beam detection device using self-balance theory and beam mechanical detection method
The technology of a detection device and detection method, which is applied in the field of bridge engineering, can solve the problems of troublesome detection process, cumbersome assembly, hidden safety hazards, etc., and achieve the effect of high accuracy and simple and convenient loading process
Pending Publication Date: 2020-05-01
ZHEJIANG UNIV
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Problems solved by technology
Restricted by site test conditions, for a single slab girder, on-site tests often require cranes, loading counterweights, loading brackets (steel beams), jacks, steel wire ropes, etc. It is troublesome, inefficient, and has certain safety hazards, so it is necessary to develop a simple and convenient loading method
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[0050] The invention will be further described below in conjunction with the accompanying drawings and implementation examples.
[0051] Such as figure 1As shown, a plate girder detection device using the self-balancing theory includes: a test beam 1, three I-beams 2 installed on the test beam 1 and placed under the jack, two of the three I-beams 2 are parallel Placed on the test beam 1, another I-beam is placed on two parallel I-beams, the jack 3 standing on the I-beam 2, the steel wire rope 4 connecting the jack 3 and the test beam 1, the steel wire rope 4 is directly Use a hook to hook on the hook embedded part 6 of the test beam 1 (the hook and loop embedded part 6 forms a ring structure, forming a semi-circular structure hook ring, which is convenient for the wire rope 4 to be directly hooked with a hook), and a piece with holes on both sides The steel plate 5 is placed on the jack 3, and the wire rope 4 is directly hooked on the steel plate with holes. The steel wire r...
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The invention discloses a plate beam detection device using a self-balance theory and a beam mechanical detection method. The device comprises a beam for testing a loading force, I-steel installed onthe beam, a jack standing on the I-steel, a steel plate installed on the top surface of the jack, and a steel wire rope connected to the beam and the steel plate. The method of the invention comprisesa step of evaluating the actual quality through the beam mid-span total deflection, the beam mid-span upper-end stress and the beam mid-span lower-end stress which are obtained by calculation. According to the device and the method, a theory of a plane beam string structure is applied to the bending resistance detection of the beam, so that the whole detection system of the beam becomes a self-balancing system, the jack is replaced by a pole, a weight is hoisted without an external large hoisting machine during loading, and the stress on the beam can be realized by only selecting an appropriate tensioning steel cable to restrain the extension of the jack, so that a loading process is simple and convenient.
Description
technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a plate girder detection device and a beam mechanics detection method using the self-balancing theory. Background technique [0002] In order to ensure the quality of reinforced concrete bridges, it is usually necessary to conduct field tests on single-piece prefabricated beams. Restricted by site test conditions, for a single slab girder, on-site tests often require cranes, loading counterweights, loading brackets (steel beams), jacks, steel wire ropes, etc. It is troublesome, inefficient, and has certain potential safety hazards, so it is necessary to develop a simple and convenient loading method. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a plate girder detection device and a beam mechanics detection method using the self-balancing theory. [0004] The present invention applies the theory of planar ten...
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IPC IPC(8): G01M5/00
CPCG01M5/0008G01M5/005
Inventor 杨玉龙费伟成庞志成张可佳季京宣汤晗青
Owner ZHEJIANG UNIV