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Wall sinking construction method

A construction method and sinking wall technology, applied in artificial islands, water conservancy projects, infrastructure engineering, etc., can solve problems such as insufficient control of wall sinking, achieve convenient construction, strong adaptability, and prevent safety accidents in foundation pits Effect

Active Publication Date: 2019-06-18
问延煦
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above technologies are still insufficient in controlling the sinking of the wall

Method used

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Embodiment Construction

[0043] The present invention is described below in conjunction with accompanying drawing and specific embodiment:

[0044]1. Preparatory work before the excavation of the tank: explore the physical and mechanical characteristics of the rock and soil in the tank corresponding to the wall, and provide a basis for the selection of the excavator at the bottom of the wall. When the excavated soil layer is mainly cohesive soil layer, the track beam should be pre-buried at the bottom of the wall, and the excavator at the bottom of the wall should walk on the track beam in a suspended manner, and the mechanical weight is transmitted from the wall to the adjacent support pile 6. Lighter equipment; when the excavated soil layer is mainly sandy soil or rock, crawler excavators can be considered, and the self-weight of the excavator is borne by the unexcavated rock and soil mass. After the excavator is selected, the height of its required working space is determined, so the load that the ...

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Abstract

The invention belongs to the technical filed of civil construction underground engineering, and provides a wall sinking construction method to make a wall body to sink under control. The wall sinkingconstruction method is characterized in that retaining structures are firstly formed on the two sides, corresponding to a groove body, of the wall body, then a section of wall body with a certain height is manufactured on the ground, and jacks and a supporting pile body are installed on the two sides of the bottom of the wall body to reinforce the rock and soil mass under the supporting pile body.The wall body is supported by the jacks and the supporting pile body, the bottom of the wall body is suspended to form an excavation working space with a certain height, and in the space, an underwater excavator is controlled remotely to excavate rock and soil in the groove body layer by layer; elastic support with rollers is sandwiched between the retaining structures on the two sides of the wall body and the groove body to transfer and balance rock and soil pressure, and thus wall sinking frictional resistance is controllable; and under control of the jacks, the wall body sinks for a section and is connected with a higher section on the ground. When the construction method is used for foundation pit supporting, the outer wall of a basement and spatial steel support can be sunken and putin place at the same time to form a safe and economical foundation pit supporting system; and the construction method also can be used for building side slope retaining walls and underground diaphragm walls.

Description

technical field [0001] The invention belongs to the technical field of civil construction underground engineering, and relates to an underground wall construction method. Background technique [0002] First build a wall on the ground, and then excavate the rock and soil body corresponding to the wall body, so that the wall sinks from the ground to the ground, which can be called the sinking wall method. The traditional caisson method is to excavate all the surrounding rock and soil in the well. A number of patents have provided methods and equipment for wall sinking. Chinese patent (CN1120104A) discloses a construction method for an underground wall. Water guns are used to excavate the edge of the wall to form muddy water, and the muddy water is sucked away by a jet pump. The water ring around the wall reduces drag and prevents the soil wall from collapsing. Chinese patent (CN101338567B) discloses a kind of construction method that the swirl-jet caisson method cooperates ...

Claims

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Application Information

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IPC IPC(8): E02D17/04E02D29/045E02D29/02E02D19/18
CPCE02D17/04E02D29/045E02D19/18E02D29/02E02D29/06E02D2250/0061
Inventor 问延煦
Owner 问延煦
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