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Foundation construction of precast concrete pipes

A technology of concrete foundation and construction method, which is applied in basic structure engineering, construction and other directions, can solve the problems of long construction period, difficult quality control, low work efficiency, etc., and achieve the effect of shortening construction period, easy quality control and improving work efficiency.

Inactive Publication Date: 2005-12-28
胡彦彬
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AI Technical Summary

Problems solved by technology

The existing method reduces the workload of each operation by 50%, and the nozzle operation position must be reserved in the bottom concrete formwork pouring operation, the work efficiency is very low, and the operation cost per unit workload is higher than other concrete projects more than 1 times
[0006] 2. Difficult to control quality
[0007] The existing method divides the overall concrete foundation into the upper part and the lower part, leaving 100% horizontal construction joints between the two, which cannot achieve the ideal design intention of the overall work of the foundation, especially when rainwater irrigation oft

Method used

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  • Foundation construction of precast concrete pipes
  • Foundation construction of precast concrete pipes
  • Foundation construction of precast concrete pipes

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0021] In Fig. 1 and Fig. 2, the precast concrete support according to the illustrated size is transported to the site for installation when it reaches 70% of the concrete design strength. In Fig. 1, a=design chord length+40mm.

[0022] In Figure 3(a), the prefabricated support ③ is placed according to the design elevation, axis and position of the pipeline, and then the prefabricated pipe ① is placed on the support ③, and the casing ② is sleeved on the prefabricated pipe ①. Repeat the job one by one. In Figure 3(b), straighten the prefabricated pipe ① to find the slope, and cut the prefabricated pipe ① and casing ②. After the closed water test is qualified, the entire pipeline foundation ④ is cast. The formwork is supported at one time, and the concrete pouring is also completed at one time, leaving no horizontal construction joints.

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Abstract

The invention opened a construction method of the prefabricated pipe concrete. According to the cross-section of the pipe concrete, we can design the concrete bracket of 20cm thick. Before setting the prefabricated pipe, first to set the prebracket on the 1/5 of the pipe length to the mouth of the pipe, then to set the pipe onto the bracket, last to set the template and pour the concrete. The method can improve the efficient and avoid the quality trouble.

Description

Technical field [0001] The invention relates to a municipal and building construction method, especially a method for changing the construction process route. Background technique [0002] The existing construction method is to divide the integral concrete foundation of the prefabricated pipeline into two constructions, that is, pouring the concrete on the lower part of the pipeline first, then installing the pipeline, and pouring the concrete on the upper part of the foundation wrapping the side of the pipeline after the installation is qualified. [0003] There are three problems with this approach: [0004] 1. Low work efficiency [0005] The prefabricated pipe concrete foundation project is characterized by a small amount of concrete but a long operation line, frequent transfer of equipment and personnel, and the man-hours consumed for transportation per unit amount of concrete are higher than the man-hours for pouring and tamping. The existing method reduces the workl...

Claims

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Application Information

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IPC IPC(8): E02D27/46
Inventor 胡彦彬
Owner 胡彦彬
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