Lateral earth pressure sensor embedment method and device in earth

An earth pressure sensor and lateral earth pressure technology, which is applied in the field of construction engineering, can solve problems such as inconsistency between deformation and soil, large error in earth pressure test results, and large rigidity, so as to facilitate standardized production and installation, and test results Reliable, well-protected effect

Inactive Publication Date: 2009-02-04
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] The present invention aims at the deficiencies in the above-mentioned prior art, and proposes a method and device for embedding a lateral earth pressure sensor in the soil, which overcomes the exc

Method used

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  • Lateral earth pressure sensor embedment method and device in earth
  • Lateral earth pressure sensor embedment method and device in earth
  • Lateral earth pressure sensor embedment method and device in earth

Examples

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Embodiment

[0030] The project example is the comprehensive reconstruction (phase I) project of a certain area in Shanghai. The east side of the construction site of the project is the Huangpu River flood control wall, which was built in the 1970s and was heightened and reinforced in the early 1990s. The traffic around the construction site is heavy, and there are underground pipelines distributed. The new temporary flood control wall has effectively isolated the construction area from pipelines and roads.

[0031] The foundation pit engineering of buildings in the land area of ​​this project is divided into 4 construction areas A, B, C and D. The enclosure structure adopts an 800mm thick underground diaphragm wall with a depth of 27m to 28m, and three horizontal reinforced concrete supports are used in the pit. The excavation method of the foundation pit is conventional construction. The excavation depth of the foundation pit is 13.5m, and the total extension of the foundation pit is 120...

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Abstract

The invention relates to a method for embedding a side-direction soil pressure sensor in the soil and a device thereof, which belongs to the technical field of construction engineering. The device comprises a sensor installation pipe, an extension pipe, a soil pressure sensor, a protective steel jacket, a U-shaped protective steel clip, a rigging screw, a connector pipe, a data transmission guide wire and a data collection instrument. The data transmission guide wire of the soil pressure sensor is connected with the data collection instrument. A notch is arranged in the center of the sensor installation pipe; the soil pressure sensor is put into the protective steel jack and then the soil pressure sensor and the protective steel jack are embedded in the notch; the U-shaped protective steel clip and the rigging screw are used to fix; the connector pipe is used to extend the sensor installation pipe and the extension pie to the design length; the pipes are put into a soil drilling hole; the guide pipes are fixed temporarily, and then fine sand is backfilled into the drilling hole; after the fine sand is consolidated, and the side direction soil pressure test is carried out. The invention has the advantages of convenient installation and operation, economy and practicality, high survival rate of the sensor embedded, capability of quite accurately measuring the side direction soil pressure in the soil, and accurate and reliable test result.

Description

technical field [0001] The invention relates to a sensor embedding method and device in the technical field of construction engineering, in particular to a method and device for embedding a lateral earth pressure sensor in soil. Background technique [0002] In the construction of underground engineering, the earth pressure monitoring on the surface of the enclosure structure and inside the soil is usually carried out by embedding earth pressure sensors on the soil-facing surface of the structure and in the soil, and reading the required data through corresponding reading instruments. The method of embedding the earth pressure sensor on the soil-facing surface of the enclosure structure is different from that in the soil. The commonly used methods of embedding earth pressure sensors on the soil facing surface of the enclosure structure are: hanging cloth method, ejection method and pop-up method. These three embedding technologies are relatively mature and widely used in en...

Claims

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Application Information

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IPC IPC(8): E02D29/02E02D31/00G01L1/00
Inventor 陈锦剑丁勇春王建华夏小和
Owner SHANGHAI JIAO TONG UNIV
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