Embedding apparatus and method for earth pressure box

Abstract

The invention discloses a device and a method for burying a soil pressure cell, relating to the soil pressure cell application technique when monitoring the soil pressure during the risk evaluation and control in civil engineering. The device consists of a base and a sliding pushing guideway; the base can freely slide on the siding pushing guideway; the base comprises a soil pressure cell bottom shoe (2), a guideway wheel (3), a lead pipe trough (4) and a connecting batten plate (5); the sliding pushing guideway comprises a U-shaped guide sliding trough (6), a connecting steel plate (7), a position limit plate (8), a steering shaft (9), a steering steel wire (10), a rigid connecting plate (11) and an L-shaped screw (12). The device and the method for burying a soil pressure cell can be widely applied to the burying which is in the risky evaluation of deep pit construction of urban subway station or high-rise building and during monitoring and measuring the soil pressure; the survival rate of the soil pressure cell is high, the burying depth is not restricted, the positioning is exact, the installation cost is low, the data is true and exact and the regularity and pertinence are good.

Description

technical field [0001] The present invention relates to an earth pressure cell application technology when monitoring earth pressure in civil engineering risk assessment and control, in particular, relates to an earth pressure cell embedding device and embedding method thereof, which are mainly applied to cantilever piles (such as Bored piles) + deep mixing piles (such as powder spray piles) in the deep foundation pit of the anti-seepage composite retaining structure. Background technique [0002] In the construction of urban subway stations or high-rise buildings, the site is narrow and the environmental boundary conditions are complex and diverse. The excavation of deep foundation pit directly affects the safety quality, construction period and cost of the whole project. Modern deep foundation pits often use cantilevered piles, and the composite retaining form of deep mixing piles for seepage prevention and retaining pile soil is used to prevent damage to surrounding buil...

AI Technical Summary

Problems solved by technology

The sensing membrane of the earth pressure cell will deform and deflect under the action of earth pressure. The difference in physical and mechanical properties between the earth pressure cell and the surrounding medium affects the measurement accuracy of earth pressure.

[0006] (3) Influence of stress concentration: After the earth pressure cell is buried, the filling and compaction of the soil layer or repeated soil improvement and reinforcement not only disturb the soil, but also cause the earth pressure cell to bear too much stress in the soil

Forced stirring damages the diaphragm of the box body, the stirring pressure makes the diaphragm deformed irreversibly, or the cement slurry is wrapped and scrapped

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