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Formwork system and construction method of cast-in-place pile in underground air-raid shelter

A technology for air-raid shelters and cast-in-place piles, which is applied to sheet pile walls, infrastructure engineering, construction, etc., can solve the problems of exploding molds and slurry leakage at the top of air-raid shelters, wasting construction costs, and inability to build compact brick molds, saving materials. , the effect of reducing construction costs

Active Publication Date: 2020-12-04
隆生国际建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, in order to reduce the adverse impact of underground air-raid shelters on the foundation construction of tall buildings, it is necessary to carry out the construction of cast-in-place piles on the basis of passing through the air-raid shelters. The traditional cast-in-place pile formwork system for passing through the air-raid shelters generally uses brick tire formwork under the piles , but there are deficiencies in this way: 1. The brick tire mold cannot be built densely and there will be grout leakage; this is because when the brick tire mold is built to the top of the air-raid shelter, the gap between the top of the air-raid shelter and the brick tire mold is small , but the thickness of the brick tire form itself is relatively large, and due to the influence of the operating space, it is difficult to guarantee the quality of the gap masonry between the brick tire formwork and the roof of the air-raid shelter. It is prone to mold explosion and grout leakage, which affects the pouring quality of the pile body; 2. It is necessary to transfer a large amount of formwork raw materials to the air-raid shelter, wasting a lot of construction costs

Method used

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  • Formwork system and construction method of cast-in-place pile in underground air-raid shelter
  • Formwork system and construction method of cast-in-place pile in underground air-raid shelter

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0042] like figure 1 , 2As shown, a formwork system for cast-in-place piles in an underground air-raid shelter includes a pile hole 1 and an air-raid shelter 2 connected laterally with the pile hole 1. A formwork system 3 is provided at the connection between the pile hole 1 and the air-raid shelter 2. The formwork system 3 includes a steel guard. Cylinder 31 and laminated steel plate 32, the steel casing 31 is located in the pile hole 1 and located at the air-raid shelter 2 during masonry, and the laminated steel plate 32 is arranged on the steel casing 31, and the laminated steel plate 32 crosses the steel casing The side wall of 31 and the wall surface of air-raid shelter 2 fit, and the length of steel jacket 31 is greater than the hole diameter of air-raid shelter 2, so that steel jacket 31 can cover air-raid shelter 2 completely; The upper and lower ends of steel jacket 31 are respectively connected with The pile hole 1 is located on the upper and lower walls of the air-...

Embodiment 2

[0047] A construction method of a formwork system for an underground air-raid shelter grouting pile, comprising the following steps:

[0048] Step 1. Construction preparation: Clean up the pile foundation construction site before construction, including removing sundries, replacing soft soil, leveling and compacting the filling platform, and laying out the construction site according to the construction organization. Make plans for the storage area of ​​machinery;

[0049] Step 2. Excavation of pile foundation: According to the site survey data, the specific position of the cast-in-place pile in the air-raid shelter 2 is determined. When excavating the pile hole 1 at the position of the air-raid shelter 2, the thickness of the steel casing 31 is measured, and the excavated pile hole 1 The diameter should be the thickness of the steel casing 31 plus the pile diameter of the standard common pile;

[0050] Step 3, making steel casing 31: measure the diameter of air-raid shelter ...

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Abstract

The invention relates to a formwork system for an underground shelter cast-in-place pile and construction method thereof, and belongs to the technical field of building construction. The formwork system comprises a pile hole and an air-raid shelter communicating transversely with the pile hole, and a formwork system body is arranged on the communication place of the pile hole and the air-raid shelter; the formwork system body comprises a steel casing disposed in the pile hole and located on the air-raid shelter and a laminated steel plate disposed on the steel casing, and the laminated steel plate transversely penetrates through the side wall of the steel casing and is fitted to the wall surface of the air-raid shelter; the laminated steel plate is provided with a fixing part for fixing the laminated steel plate on the wall surface of the air-raid shelter, and a sealing part is arranged on the outer wall of the steel casing; and a supporting part for supporting the outer side wall of the steel casing is disposed in the air-raid shelter. The sealing part shields a gap between the steel casing and the pile hole, concrete is prevented from flowing into the air-raid shelter through thegap during pouring, materials used are less than materials of a masonry brick loose tooling, so that the materials are saved to a certain extent, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a formwork system for cast-in-place piles in underground air-raid shelters and a construction method thereof. Background technique [0002] Air-raid shelters are caves dug during the war to avoid enemy artillery bombardment and to protect the safety of people and property. Most of them are made of bricks and stones, and some are concrete structures. With the continuous acceleration of urbanization, many The air-raid shelters were gradually abandoned and related materials have been lost. In the new round of urban construction, tall buildings emerge one after another, how to reduce the adverse impact of underground air-raid shelters on the foundation construction of tall buildings is the top priority of foundation construction in air-raid shelter areas. [0003] Therefore, in order to reduce the adverse impact of underground air-raid shelters on the foundation constr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/38E02D5/66
CPCE02D5/38E02D5/665
Inventor 隆元刚
Owner 隆生国际建设集团有限公司