Bridge prestressed pipeline grouting device and its construction method

Abstract

The invention discloses a grout supplementing and pressing device for prestressed pipelines of a bridge and a construction method thereof. A vacuum grout supplementing and pressing device is arranged on a beam body in matched mode, a pre-buried pipeline in the vacuum grout supplementing and pressing device is arranged in the highest positions of the prestressed pipelines in the beam body. A vacuum pump, a grout supplementing and pressing funnel, a hose, a first three-way valve, a second three-way valve, a grout storage drum, an air inflation pipe and a high-pressure air pump are combined to complete overall grout supplementing and pressing construction. In the process of grout supplementing and pressing construction, treatment of pre-judging and detecting needs to be completed firstly, and then follow-up grout supplementing and pressing is conducted. By means of the optimized design, grout supplementing treatment can be effectively conducted on a cavity occurring in the beam body after grouting solidification, and grouting fullness is improved. Combining with the arrangement of the grout storage drum, the high-pressure air pump and the air inflation pipe, the treatment effect of a concrete air bubble film inside the beam body is improved. Meanwhile, the fullness and completeness of supplemented grout are further strengthened, the engineering quality of a prestressed structure of the bridge is guaranteed, and the safe service life of the bridge is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of bridge engineering construction, in particular to a post-tensioned prestressed concrete bridge prestressed pipeline prestressed grouting device and a construction method thereof. Background technique [0002] Because bridge prestressed pipeline grouting is a concealed project, the prestressed system is usually designed without inspection holes, and there are no other inspection measures during construction, so the quality of bridge prestressed pipeline grouting is not easy to evaluate. In the specific construction quality control, there are still big problems in the quality of bridge prestressed pipe grouting. There are usually certain volumes of cavities in the highest point of corrugated pipes and prestressed pipes, which seriously affect the safety and durability of bridge structures. However, such defects are not easy to be exposed in the early stage of bridge operation. As a result, few people pay at...

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Problems solved by technology

In the specific construction quality control, there are still big problems in the quality of bridge prestressed pipe grouting. There are usually certain volumes of cavities in the highest point of corrugated pipes and prestressed pipes, which seriously affect the safety and durability of bridge structures. However, such defects are not easy to be exposed in the early stage of bridge operation. As a result, few people pay attention to the quality of bridge prestressed pipeline grouting, and a complete set of prestressed pipeline grouting construction methods has not been formed.

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