Method for comprehensively detecting grouting compactness of prestressed pipeline of cast-in-situ prestressed concrete beam

A prestressed pipeline, comprehensive detection technology, applied in measuring devices, specific gravity measurement, instruments, etc., can solve the problems of no prestressed pipelines, the quality of pipeline grouting is not easy to be evaluated, and no inspection holes are provided.

Active Publication Date: 2015-07-29
陈熙贵 +2
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Problems solved by technology

[0002] Since prestressed pipeline grouting is a concealed project, there is no inspection hole in the design of the prestressed system, and there are no other inspection measures during the construction process, so the quality of pipeline grouting is not easy to evaluate
In the specific construction quality control, few people still pay attention to the quality of grouting. In addition, the detection methods of grouting quality are still stuck in drilling core sampling, ultrasonic, shock echo, ground penetrating radar and other methods, and have not formed a complete set. Practical testing method for grouting quality of prestressed pipelines

Method used

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Embodiment Construction

[0012] The present invention will be further described below.

[0013] The prestressed concrete cast-in-place beam prestressed pipe grouting compactness detection method of the present invention comprises the following steps:

[0014] Carefully study the design drawings, understand the layout of steel bars and steel strands in the analysis structure, master the number and diameter of prestressed steel strands, the layout and diameter of pipes; the situation of grouting during construction, the brand of grouting material, the preparation of grout, etc. about raw archival data.

[0015] Simulation test: Carry out in vitro simulation test according to the coordinates on the drawing, the diameter of the pipe, and the number of steel strands. Determine the compactness of grouting in prestressed pipelines, the position and height of voids and the position of steel strands in the pipeline through tests. For the method of simulation experiment, please refer to the applicant's Ch...

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Abstract

The invention discloses a method for comprehensively detecting grouting compactness of a prestressed pipeline of a cast-in-situ prestressed concrete beam. A practical and efficient detection method is explored in combination of years of engineering practice experience and in-vitro simulation tests. Small sample detection shows that the accuracy is higher, the detection effect of the grouting quality of the prestressed pipeline can be effectively improved, and the method can improve the grouting compactness of the prestressed pipeline as well as the safety and the durability of the structure.

Description

technical field [0001] The invention belongs to the field of traffic construction engineering, in particular to a method for detecting the grouting density of prestressed pipelines of prestressed concrete cast-in-place beams. Background technique [0002] Since prestressed pipeline grouting is a concealed project, there is no inspection hole in the design of the prestressed system, and there are no other inspection measures during the construction process, so the quality of pipeline grouting is not easy to evaluate. In the specific construction quality control, few people still pay attention to the quality of grouting. In addition, the detection methods of grouting quality are still stuck in drilling core sampling, ultrasonic, shock echo, ground penetrating radar and other methods, and have not formed a complete set. Practical inspection method for grouting quality of prestressed pipelines. Contents of the invention [0003] In order to solve the above-mentioned technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/02
Inventor 陈熙贵陈宇豪刘美萍
Owner 陈熙贵
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