Device for improving degree of security of foundation ditch construction and method thereof

Abstract

The invention relates to a device for improving the degree of security of foundation ditch construction and a method thereof. The device comprises a lifting anchor rod, an inhaul cable and supporting equipment, wherein the lifting anchor rod is vertically plunged into a soil body at the periphery of a foundation ditch; the lower end of the inhaul cable is connected with the lifting anchor rod, and the upper end is fixed on the supporting equipment; and the supporting equipment exerts a vertically upward pull for the lifting anchor rod through the inhaul cable. For the device for improving the degree of security of foundation ditch construction, the lifting anchor rod is plunged into the soil body at the periphery of the foundation ditch, and the inhaul cable exerts the vertically upward pull for the lifting anchor rod so that the lifting anchor rod can exert the vertically upward pull for the soil body at the periphery of the foundation ditch, the soil body at the periphery of the foundation ditch can be prevented from sinking under the action of the gravity thereof, the probability of proruption of the soil body in the foundation ditch can be reduced, the horizontal thrust of the soil body outside the foundation ditch to the inside of the foundation ditch can be also reduced, and the degree of security of the foundation ditch can be generally improved.

Description

technical field [0001] The invention relates to a foundation pit construction device, in particular to a device capable of improving the safety of foundation pit construction; at the same time, the invention also relates to a method for improving the safety of foundation pit construction. Background technique [0002] During the construction of a supported foundation pit in civil engineering, due to the gradual deepening of the earth excavation in the foundation pit, the original ecological spatial stress state of the soil is changed, and the soil outside the foundation pit often collapses and sinks. The subsidence and subsidence deformation of the soil outside the foundation pit is produced under its own gravity. In the soft soil area, the upper soil forces the deep soil to undergo continuous plastic deformation, that is, rheological movement, which leads to the uplift of the soil in the foundation pit. . When the uplift is severe, it will create an extremely dangerous sit...

AI Technical Summary

Problems solved by technology

In the Nansha area of ​​Guangzhou, China, the soft soil parameters are worse than those in Shanghai. It is extremely difficult and dangerous to use caisson technology in these areas

Because of this risk, the application of caissons is greatly limited objectively. Even if other technical solutions for foundation pit support are adopted in the above-mentioned areas, the economic cost will be huge

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