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Basement exterior wall construction method and structure

A basement external wall and construction method technology, applied in the direction of basic structure engineering, excavation, building components, etc., can solve the problems of external formwork cracking, affecting the removal of external formwork, etc., to improve waterproof strength, control harmful cracks, and avoid edge temperature The effect of gradient descent too fast

Pending Publication Date: 2019-04-16
广州市天作建筑规划设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, during the setting process of concrete, the hydration thermal expansion of concrete will cause precompressive stress to the outer wall of the basement, which will easily crack the outer formwork and affect the removal of the outer formwork.

Method used

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  • Basement exterior wall construction method and structure
  • Basement exterior wall construction method and structure
  • Basement exterior wall construction method and structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: construction method of basement exterior wall, refer to figure 1 and figure 2 , including the following steps:

[0047] Step 1: laying flexible coiled material 7 and pouring basement floor 12: ramming plain soil at the bottom of the foundation pit to form a cushion 13, laying flexible coiled material 7 on the cushion 13, and pouring concrete on the flexible coiled material 7 to form a basement floor 12. The flexible membrane 7 is preferably a polymer self-adhesive waterproof membrane.

[0048] Step 2: Implant formwork reinforcement bars 8 into the underground diaphragm wall 1 in foundation pit support, one end of the formwork reinforcement bars 8 protrudes from the underground diaphragm wall 1, and a water stop 14 is provided where the reinforcement formwork protrudes from the underground diaphragm wall 1.

[0049] Step 3: The underground diaphragm wall 1 faces the inner side of the foundation pit and erects structural steel bars for forming the basemen...

Embodiment 2

[0064] Embodiment 2: Basement exterior wall structure, such as Figure 4 As shown, it is obtained according to the construction method of the basement exterior wall of embodiment 1, including the basement exterior wall 3, the hidden beam 5 and the basement floor 12, wherein:

[0065] The basement exterior wall 3 is formed by erecting an inner formwork 2 on the side of the underground diaphragm wall 1 facing the inside of the foundation pit and pouring concrete between the underground diaphragm wall 1 and the inner formwork 2 .

[0066] The hidden beam 5 is formed by laying crossbeam steel bars 4 along the horizontal direction in the basement exterior wall 3 .

[0067] The basement floor 12 is formed by laying the flexible coiled material 7 at the bottom of the foundation pit and pouring concrete on the flexible coiled material 7 .

[0068] Beneficial effects: using the underground diaphragm wall 1 in foundation pit support as a part of the side wall of the basement, so that t...

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Abstract

The invention relates to the field of building engineering, in particular to a basement exterior wall construction method and structure. In the method, an underground continuous wall in foundation pitsupporting is used as a part of a basement side wall, so that a basement exterior wall is thinned; besides, by directly using the underground continuous wall as an outer form of a basement floor, a floor slab and the exterior wall, expansion force generated by concrete of the basement floor, the floor slab and the exterior wall in the pouring and setting process is effectively resisted; meanwhile, the concrete of the basement floor, the floor slab and the exterior wall has no exposed part on the outer side, so that the concrete is in a good curing state and not likely to crack; by taking themeasures of arranging a hidden beam in the floor of the basement exterior wall, arranging a flexible coiled material on the basement floor and the like, the generation of cracks in the basement concrete construction process is effectively controlled.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to a construction method and structure of a basement exterior wall. Background technique [0002] For super-long and super-thick concrete projects, temperature stress is a problem that cannot be ignored. Setting the post-construction pouring belt can dissipate the tensile stress generated during the cooling process of the mass concrete in the early stage of pouring after the temperature rises and expands due to the heat of cement hydration. [0003] However, in the actual operation process, the basement could not be backfilled in time, and a series of problems such as garbage cleaning at the post-poured belt and concrete roughing on both sides were difficult, which became the weak link in the waterproofing of the floor and side walls, all of which adversely affected the construction quality and progress. . [0004] The warehouse jumping method utilizes the principle of "res...

Claims

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Application Information

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IPC IPC(8): E04G21/00E04B1/00E02D17/02E02D31/02
CPCE02D17/02E02D31/02E04B1/0007E04G21/00
Inventor 金雪峰于彦召张志华
Owner 广州市天作建筑规划设计有限公司
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