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Soft soil deep foundation pit combined supporting structure and construction method

A technology for supporting structures and deep foundation pits, applied in foundation structure engineering, excavation, sheet pile walls, etc., can solve problems such as deformation and damage of double-row pile supporting structures, improve the supporting effect and reduce the possibility of deformation , the effect of stabilizing support

Active Publication Date: 2022-02-15
深圳市蛇口招商港湾工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]In order to improve the problem that the double-row pile support structure is prone to deformation and damage, this application provides a soft soil deep foundation pit combined support structure and construction method

Method used

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  • Soft soil deep foundation pit combined supporting structure and construction method
  • Soft soil deep foundation pit combined supporting structure and construction method
  • Soft soil deep foundation pit combined supporting structure and construction method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The embodiment of the present application discloses a combined support structure for deep foundation pits in soft soil.

[0066] refer to figure 1 , combined support structure for deep foundation pit in soft soil, including double-row pile body 1 arranged along the periphery of the foundation pit, double-row pile body 1 is composed of front row of piles 101, rear row of piles 102 and pile top connecting beam 103, front row of piles 101 and the rear row of piles 102 are arranged parallel to each other, the front row of piles 101 are evenly arranged along the periphery of the foundation pit, the rear row of piles 102 are arranged in the soft soil outside the foundation pit, and the pile top connecting beam 103 is connected between the pile top of the front row of piles 101 and the Between the pile tops of the rear row of piles 102, the double-row pile body 1 plays the role of retaining and supporting the foundation pit. Interlocking water-stop curtain piles 2 are arrange...

Embodiment 2

[0085] refer to Figure 4 with Figure 5 The difference between the present embodiment and the first embodiment is that the soft soil deep foundation pit composite support structure, the pressing mechanism 5 includes an auxiliary support assembly 54, a linear drive assembly 2 55, an installation assembly 56 and a pair of The brackets 57 of the assembly 56, one of the brackets 57 is fixed on one side of the diagonal brace 4, and the other bracket 57 is fixed on the other side of the diagonal brace 4. The mounting assembly 56 is composed of a mounting plate 561 and sliders 562 fixed on both sides of the mounting plate 561. The mounting plate 561 is slidably sleeved on the diagonal brace 4, and the sliding block 562 is slidably connected with the bracket 57, so that the mounting plate 561 can be moved along the slope. The support column 4 moves, and the bracket 57 can also fix the slider 562 after the position of the mounting plate 561 is adjusted. The second linear drive assem...

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Abstract

The invention relates to a soft soil deep foundation pit combined supporting structure and a construction method thereof, which are applied to the field of foundation pit supporting technology. The soft soil deep foundation pit combined supporting structure comprises a double-row pile body, the double-row pile body comprises front-row piles and rear-row piles which are arranged in parallel, the front-row piles are arranged along the periphery of a foundation pit, the rear-row piles are located on the sides, back on to the foundation pit, of the front-row piles, pile top connecting beams are connected between the pile tops of the front-row piles and the pile tops of the rear-row piles, soft soil is filled between the front-row piles and the rear-row piles, mutually-meshed waterproof curtain piles are arranged between pile bodies of the adjacent front-row piles, a plurality of supporting boxes are arranged in the foundation pit and fixed in the soft soil at the bottom of the foundation pit, inclined supporting columns are arranged between the supporting boxes and the front-row piles, and the supporting boxes and the inclined supporting columns are arranged in a one-to-one correspondence mode. One ends of the inclined supporting columns are hinged to the front-row piles, the other ends of the inclined supporting columns are located in the supporting boxes, an abutting mechanism used for pushing the inclined supporting columns to abut against the front-row piles is arranged in the foundation pit, and the abutting mechanism is fixed to the supporting boxes. The effect of improving the stability of the foundation pit supporting structure is achieved.

Description

technical field [0001] The application relates to the technical field of foundation pit support, in particular to a combined support structure and construction method for deep foundation pits in soft soil. Background technique [0002] The foundation pit support is to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, and the support, reinforcement and protection measures adopted for the side wall of the foundation pit and the surrounding environment. Commonly used foundation pit support methods include pile row support, underground diaphragm wall support, pile or wall plus support system, reinforced concrete pile row, etc., which can be carried out after comprehensive evaluation of the depth and soil quality of the foundation pit. Choice, or a reasonable combination of multiple support methods. [0003] The Chinese patent with the notification number CN209443473U discloses a double-row pile support structure f...

Claims

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Application Information

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IPC IPC(8): E02D17/04E02D19/18E02D15/02E02D5/34
CPCE02D17/04E02D19/18E02D15/02E02D5/34
Inventor 范志旺唐启石邱孝广
Owner 深圳市蛇口招商港湾工程有限公司
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