Device for measuring highest strength ratio of slurry retaining wall by simulating different working conditions and operation method

A mud retaining wall, the highest strength technology, applied in the direction of foundation structure engineering, foundation structure test, sheet pile wall, etc., can solve the problems of material waste and inability to effectively target the foundation

Active Publication Date: 2020-12-18
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Commonly used construction methods for protecting pile holes at this stage: steel casing + clear water reverse circulation and steel casing + mud wall protection are two commonly used construction methods, but these methods are mainly based on steel casings, supplemented by other methods, and cannot be effective For various foundations, resulting in waste of materials

Method used

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  • Device for measuring highest strength ratio of slurry retaining wall by simulating different working conditions and operation method
  • Device for measuring highest strength ratio of slurry retaining wall by simulating different working conditions and operation method
  • Device for measuring highest strength ratio of slurry retaining wall by simulating different working conditions and operation method

Examples

Experimental program
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Effect test

Embodiment 1

[0058] see Figure 1-11 , a device for simulating different working conditions to measure the highest strength ratio of the mud retaining wall, which includes a bottom cap 1, an inner mud tube 4 and an outer half cylinder 5, the inner mud tube 4 is fixedly installed in the middle of the bottom cap 1, The outer semi-cylinder 5 is fixed on the bottom platform 1, and is arranged on the periphery of the inner mud tube 4 so that the two are arranged concentrically; on the bottom platform 1, a shaft column is symmetrically arranged on the outer side of the outer semi-cylinder 5 2; a mixer support 3 is fixed on the bottom platform 1, a mixer 31 is fixedly installed on the top of the mixer support 3, a reaction force frame 7 is fixed on the top of the shaft column 2, and the bottom of the reaction force frame 7 A hydraulic jack 71 is fixed at the central part, and a pressure plate 6 is installed at the bottom end of the piston rod of the hydraulic jack 71; a strain gauge is inserted a...

Embodiment 2

[0072] For simulating foundations of different depths, the earth pressure generated by the foundation at that depth is roughly calculated according to the specifications, the pressure is increased at the deep part of the simulated foundation, and the shallow part of the simulated foundation is properly pressurized or not pressurized; different materials can be added to the outer half cylinder, Add coral sand, suitable for coral sand foundation, add sand, suitable for gravel foundation.

[0073] An operation method of a device for simulating different working conditions and measuring the highest strength ratio of mud retaining wall, characterized in that it includes the following steps:

[0074] S1: Place the device on a flat ground, place the outer semi-cylinder 5 on the bottom cap 1 of the device, put the inner mud tube 4 in the middle of the bottom cap 1, and connect with the outer semi-cylinder 5, choose the appropriate one according to the required radian of the retaining w...

Embodiment 3

[0085] For the visualization of the device, the inner mud cylinder 4, the outer semi-cylinder 5 and the pressure plate 6 steel plates are all made of tempered glass, and the whole process of the operation is photographed and observed, including the change of the semi-cylinder when coral sand is added, and the pressure plate when the pressure is applied. The tightness between coral sands and the trajectory of mud infiltration in the later stage of the mud retaining process, whether it expands from the side or in an arc; cooperate with the arc camera device 8 to measure the uniformity of mud infiltration, and obtain its average influence range and The maximum and minimum influence ranges can be selected according to the needs.

[0086] A construction method of a device for simulating foundation pressurization to measure the highest strength ratio of mud retaining wall, which is characterized in that it includes the following steps:

[0087] S1: Place the device on a flat ground,...

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Abstract

The invention provides a device for measuring the highest strength ratio of a slurry retaining wall by simulating different working conditions and an operation method. An inner side slurry cylinder isfixedly mounted in the middle of a bottom bearing platform, and an outer side semicircular cylinder is fixed on the bottom bearing platform and arranged on the periphery of the inner side slurry cylinder, so that the inner side slurry cylinder and the outer side semicircular cylinder are concentrically arranged; shaft columns are symmetrically arranged on the bottom bearing platform and located on the outer side of the outer side semicircular cylinder; a stirrer support is fixed on the bottom bearing platform, a stirrer is fixedly mounted at the top of the stirrer support, a reaction frame isfixed at the tops of the shaft columns, a hydraulic jack is fixed in the center of the bottom of the reaction frame, and a pressure plate is mounted at the bottom end of a piston rod of the hydraulicjack; and a strain gauge is inserted in the slurry retaining wall. The device combines visual processing with two types of camera devices, so that change of coral sand under pressure can be observedmore clearly, the permeation rate and the permeation track of slurry in the coral sand are obtained, the uniformity of the slurry is measured, and the influence range is obtained.

Description

technical field [0001] The invention relates to the field of mud retaining walls, more specifically, a device and an operation method for simulating different working conditions and measuring the highest strength ratio of mud retaining walls. Background technique [0002] Bored cast-in-situ piles are widely used in construction and road and bridge engineering as a kind of artificial foundation. According to the different forms of retaining wall, they can be divided into two types: mud retaining wall and full casing construction. Among them, the mud retaining wall is a very common construction method in construction. The mud retaining wall punching cast-in-situ pile is widely used in various buildings because of its simple process, high strength of the pile body, and adaptability to different complex geological conditions. The mud retaining wall is filled with the mixture of water, bentonite and CMC and other admixtures. For projects such as the formation of underground diaph...

Claims

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Application Information

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IPC IPC(8): E02D33/00E02D5/34
CPCE02D33/00E02D5/34
Inventor 刘杰陶鑫波程其芬王瑞红张瀚王芳孙涛邓捷宋瑞何卓文李远航包顺骆浩
Owner CHINA THREE GORGES UNIV
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