Underwater concrete bearing platform building method

A technology of underwater concrete and construction methods, which is applied in the fields of construction and infrastructure engineering, can solve the problems of high construction cost, labor-consuming and time-consuming pumping, and low bearing capacity of pile foundations, so as to achieve small pumping workload, improve construction efficiency, The effect of small construction area

Active Publication Date: 2014-08-20
湖北宏联众装配集成房屋有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the construction of shallow underwater concrete caps mostly adopts the cofferdam method, that is, the cofferdam is built at the place where construction is required, and then the water in the cofferdam is pumped out, and the construction can be carried out in the cofferdam according to the land construction method, but Its cost is high, and it is necessary to pump water for large-scale construction sites for infrastructure preparation. Pumping water is time-consuming, and its construction method is relatively cumbersome. The bearing capacity of the pile foundation is low, and the construction cost is high. The pile foundation will cause defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] While the above process is in progress, a rectangular cement cap block is prepared on the construction site. During the pouring process of the cap block, the four corners of the cap are left with pile holes that fit with the gap between the steel pipes. Square steel cage, the steel cage is made of steel bars with a diameter of 15mm. After the concrete in the steel pipe is solidified, the foundation block of the cap is launched into the water and the gap between the pile hole and the steel pipe is matched;

[0018] Launch the square pipe into the water, place it above the base of the cap and match it with the gap between the grooves on the base of the cap, put four steel pipes into the square pipe, and after the water in the square pipe is evacuated, bend the positioning steel bar in the steel pipe and make it Insert it into the reinforcement cage, cross-weld the contact between the two, and then drill anchor holes in the base of the cap along the rectangular sideline com...

Embodiment 2

[0020] Four DN450 steel pipes are distributed in the four corners of a 20×40m rectangle, and are directly pre-embedded to the predetermined position through a hydraulic vibrating hammer, then the water and mud in the four steel pipes are extracted, and the positioning steel bars are inserted at the central axis of the steel pipes to position the steel bars It is a grade II steel bar, and then continue to pour concrete into the steel pipe until it is as high as the steel pipe and then solidifies.

[0021] While the above process is in progress, a rectangular cement cap block is prepared on the construction site. During the pouring process of the cap block, the four corners of the cap are left with pile holes that fit with the gap between the steel pipes. Square steel cage, the steel cage is made of steel bars with a diameter of 22mm. After the concrete in the steel pipe is solidified, the foundation block of the cap is launched into the water and the gap between the pile hole an...

Embodiment 3

[0024] Four DN400 steel pipes are distributed in the four corners of a 20×40m rectangle, and are directly pre-embedded to the predetermined position through a hydraulic vibratory hammer, and then the water and mud in the four steel pipes are extracted, and the positioning steel bars are inserted at the central axis of the steel pipes to position the steel bars It is a grade I steel bar, and then continue to pour concrete into the steel pipe until it is as high as the steel pipe and then solidifies.

[0025] While the above process is in progress, a rectangular cement cap block is prepared on the construction site. During the pouring process of the cap block, the four corners of the cap are left with pile holes that fit with the gap between the steel pipes. Square steel cage, the steel cage is made of steel bars with a diameter of 20mm. After the concrete in the steel pipe is solidified, the foundation block of the cap is launched into the water and the gap between the pile hole...

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Abstract

The invention belongs to the field of buildings, and particularly relates to an underwater concrete bearing platform building method. The method comprises the steps that the bearing platform base block pouring process is carried out on the ground, a steel pipe is used underwater for pumping water and pouring concrete to build a pile foundation, then bearing platform base blocks are placed underwater to be matched with the pile foundation, and bearing platform pouring is carried out in a cofferdam formed by square pipes and the bearing platform base blocks. According to the underwater concrete bearing platform building method, construction is fast, the bearing platform base blocks and steel reinforcement cages above the bearing platform base blocks can be manufactured on the ground, and meanwhile, the pile foundation is built at the same time, so that time and labor are saved, the construction area is small, the water pumping quantity is small, construction efficiency is improved, and the construction period is shortened.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a construction method of an underwater concrete cap. Background technique [0002] At present, the construction of shallow underwater concrete caps mostly adopts the cofferdam method, that is, the cofferdam is built at the place where construction is required, and then the water in the cofferdam is pumped out, and the construction can be carried out in the cofferdam according to the land construction method, but Its cost is high, and it is necessary to pump water for large-area construction sites for infrastructure preparation. Pumping is time-consuming, and its construction method is relatively cumbersome. [0003] Therefore, how to provide a rapid construction method with low cost and low material consumption in a small area is a problem worthy of attention and research in this field. Contents of the invention [0004] The purpose of the present invention is to provi...

Claims

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Application Information

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IPC IPC(8): E02D27/14
Inventor 孙卓
Owner 湖北宏联众装配集成房屋有限公司
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