Method for detecting defects of grouting material structure between fabricated pier and bearing platform

A technology for structural defects and detection methods, applied in the direction of analyzing materials, processing detection response signals, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, etc.

Inactive Publication Date: 2021-07-23
SHANDONG LUQIAO CONSTR
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  • Description
  • Claims
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Problems solved by technology

[0004] In view of the above problems, the purpose of the present invention is to provide a method for detecting the structural defects of the grouting material between the assembled bridge pier and the cap, which specifically solves the bonding between the grouting material for sealing and filling between the assembled bridge pier and the cap and the former two Stability and detection of grouting material's own strength

Method used

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  • Method for detecting defects of grouting material structure between fabricated pier and bearing platform
  • Method for detecting defects of grouting material structure between fabricated pier and bearing platform
  • Method for detecting defects of grouting material structure between fabricated pier and bearing platform

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Embodiment 1

[0047] Such as figure 2 As shown, the specific methods of strain gage layout include,

[0048] 1) Before the lifting of the pier is completed, drill a round hole with a diameter of 3cm and a depth of 15cm at the bottom of the cap groove, put the strain gauge in, seal it with the mortar corresponding to the cap, and then start recording the data of the strain gauge;

[0049] 2) After the hoisting of the pier is completed, the strain gauge is tied to the middle of the steel bar with a diameter of 10mm consistent with the depth of the cap, and placed vertically into the four gaps between the cap and the side of the pier, and then poured in grouting material to record the data of the strain gauge;

[0050]3) Then analyze the strain gauge data, and compare the strain value generated by the self-weight of the pier with the strain gauge reading according to the specific theoretical calculation, and determine the key detection area if the value is greatly different from the theoretic...

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Abstract

A method for detecting defects of a grouting material structure between a fabricated pier and a bearing platform relates to the technical field of bridge structure detection, and comprises the following steps of: (1) laying an embedded strain gauge; (2) obtaining data of the strain gauge; (3) analyzing the data of the strain gauge, and determining a key detection area 1; (4) determining possible structural defect positions in the non-key detection area by adopting an elastic wave vertical reflection method, and determining a key detection area 2; (5) detecting the key detection area by adopting an ultrasonic tomography technology to obtain detection data; and (6) inverting the obtained data by using an algorithm to obtain the condition of the detected structure. By using the detection method provided by the invention, whether the grouting material structure between the fabricated pier and the bearing platform is stable or not can be known quickly and reliably, and the later safety construction and the reliability of the bridge are ensured.

Description

technical field [0001] The invention relates to the field of bridge detection, in particular to a method for detecting structural defects of grouting materials between assembled bridge piers and caps. Background technique [0002] With the acceleration of China's urbanization process and the continuous development of bridge construction technology, prefabricated concrete piers will become the trend of bridge construction technology development in the future by virtue of their high construction quality and green environmental protection. The bonding stability between the sealing grout and the former two and the strength of the grout are not only related to the reliability of the bridge substructure, but also crucial to the safety of the bridge superstructure. [0003] At present, in this field, there is no very specific method for the detection and evaluation of the bonding stability between the grouting material for the sealing grouting between the assembled bridge pier and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/44G01N29/04
CPCG01N29/04G01N29/44G01N2291/023G01N2291/0289
Inventor 项俊宁冯伟高照尹建平魏东张军圣李先重刘昶张健王振杰
Owner SHANDONG LUQIAO CONSTR
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