Unilateral supporting formwork basement outer wall with flexible waterproof layer outer formwork

Abstract

The invention discloses a unilateral supporting formwork basement outer wall with a flexible waterproof layer outer formwork. The basement outer wall comprises a basement outer wall body, a waterproof bottom plate is arranged at the bottom of the basement outer wall body, the two sides of the basement outer wall body are provided with an integrated internally supporting boundary beam and a rigid supporting pile respectively, a gap is reserved between the rigid supporting pile and the basemen outer wall body, the gap is filled with a filling wall composed of filling blocks, and a flexible waterproof layer is arranged between the filling wall and the basemen outer wall body. The flexible waterproof effect is guaranteed to the largest extent, the lateral limiting effect of soil on a basement is effectively ensured, post-construction deformation and uneven settlement of adjacent soil are avoided, pit slots can be sealed in time, and safety construction and civilized management are convenient.

Description

technical field [0001] The invention relates to a single-side formwork basement exterior wall with a flexible waterproof layer outer formwork, which belongs to the technical field of civil engineering. Background technique [0002] The rigid foundation pit support and retaining structure of underground engineering usually adopts the form of underground diaphragm wall, reinforced concrete or SMW construction method piles, etc., and the general construction method between the pile-row support structure and the outer wall of the basement is: pile row and outer wall There is a gap with a width of about 1 meter between them. This gap is used as the operating space for setting the outer wall formwork and pasting the outer flexible waterproof layer, and it is arranged around the foundation pit. This construction method of double-side formwork support for exterior walls is usually used in traditional underground engineering. [0003] For the traditional foundation pit support proje...

AI Technical Summary

Problems solved by technology

[0005] (1) It is difficult to ensure that the external wall is dry enough to meet the requirements of pasting the waterproof layer;

[0006] (2) The waterproof layer is blocked by the replacement of support blocks and the removal of unclean purlins, which cannot cover the entire surface of the outer wall;

[0007] (3) Most of the backfill soil is dumped at the mouth of the pit, or even the construction waste is backfilled, causing the waterproof layer that has been constructed to be damaged and the flexible waterproof layer to fail;

[0008] (4) The excavation is dumped and loose-filled, and the support blocks are replaced everywhere, and the unclean purlins are removed to block and divide, so it is impossible to implement the specification requirements of "backfilling and compacting in layers, and the compaction coefficient is not less than 0.94";

[0009] (5) Pay little attention to the backfilling operation, loosely grasp the construction time, and expose the outer wall to the sun and rain for a long time, which will easily form permanent cracks and damage the self-waterproof function of the outer wall;

[0010] (6) The gap between the outer wall and the pit wall cannot be backfilled in time, and there are potential safety hazards at the pit mouth, which is not conducive to civilized construction and on-site management

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