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Local prefabricated diaphragm wall guide wall under underground facilities and construction method

A technology of underground facilities and ground-connected walls, which is applied in sheet pile walls, foundation structure engineering, buildings, etc., can solve the problems of not being able to provide convenience for underground space construction, and achieve simple construction, high node rigidity, and simple avoidance functions Effect

Active Publication Date: 2020-11-03
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional concrete large steel plate guide wall and the traditional steel plate guide wall cannot provide the convenience of construction in the underground space

Method used

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  • Local prefabricated diaphragm wall guide wall under underground facilities and construction method
  • Local prefabricated diaphragm wall guide wall under underground facilities and construction method
  • Local prefabricated diaphragm wall guide wall under underground facilities and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a partially prefabricated ground connecting wall guide wall under the underground facility, which is arranged below the cable trench 9, and the trench is constructed below the cable trench 9. The cable trench 9 is used as an obstacle and needs to be dragged by underpinning. Such as figure 1 and figure 2 As shown, it includes a first guide wall 1 and a second guide wall 11 that are oppositely arranged, and the first guide wall 1 and the second guide wall 11 are respectively arranged on both sides of the trench.

[0035] One end of the second guide wall 11 is symmetrically connected to the surrounding purlins 8 on both sides, and a plurality of uplift piles 6 are connected under the other end, and the uplift piles 6 are arranged vertically along the interior of the soil. Further, the uplift pile 6 is a reinforced concrete uplift pile. The pullout pile 6 is connected to the purlin 8 through the pullout pipe 5, and the pullout pipe 5 is steel.

...

Embodiment 2

[0045]This embodiment provides a construction method for partially prefabricated ground connecting walls and guide walls under underground facilities, which is constructed below the cable trench 9, including:

[0046] Step 1: Preparatory work before installing the guide wall:

[0047] (1) Pre-buried the fence 8 during the construction of the ground connection wall, or installed the fence 8 on the existing ground connection wall 9 . The side of the purlin 8 is left with a connection node for connecting the pullout pipe 5, and this connection node provides a large pulling force for the second guide wall 11 and subsequent operations to ensure the safety of the second guide wall 11.

[0048] (2) The uplift pile 6 is constructed in the auxiliary foundation pit, and the main reinforcement is reserved on the ground surface to prepare for the connection of the second guide wall 11 in the later stage. Since the 6 pile tops of the uplift piles are located underground, and the construct...

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Abstract

The invention discloses a local prefabricated diaphragm wall guide wall under underground facilities and a construction method. According to the technical scheme, the local prefabricated diaphragm wall guide wall comprises a first guide wall body and a second guide wall body which are oppositely arranged, and a connecting plate is fixed to the end, away from the second guide wall body, of the first guide wall body; one end of the second guide wall body is connected with an enclosing purlin, and the other end of the second guide wall body is connected with a plurality of uplift piles; and the enclosing purlin is connected with the uplift piles through uplift pipes. According to the local prefabricated diaphragm wall guide wall, the difficulty of an existing construction guide wall can be overcome in a local special environment; and the joint rigidity is high, the connection speed is high, easy installation and operation can still be achieved in a blocking space caused by a cable trench,and the construction efficiency is high.

Description

technical field [0001] The invention relates to the field of foundation pit engineering, in particular to a partially prefabricated ground connection wall guide wall under an underground facility and a construction method. Background technique [0002] The traditional guide wall is the most suitable choice in the construction of large-scale underground diaphragm walls, and the construction price is more advantageous. However, the traditional reinforced concrete guide wall is difficult to construct in a special environment, has little functionality, and cannot be used as a pullout-resistant structure. [0003] The construction of the ground connection wall due to the obstruction of existing structures such as cable trenches brings new challenges, that is, the construction of the ground connection wall below the existing structure. The traditional concrete large steel plate guide wall and the traditional steel plate guide wall cannot provide the convenience of construction in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/20
CPCE02D5/20
Inventor 李连祥苏日嘎拉图杨立亭李红波于克猛李伟同
Owner SHANDONG UNIV
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