Measuring instrument for foundation pile low strain detection and on-site monitoring system

A technology of measuring instrument and monitoring system, which is applied in the test of foundation structure, sheet pile wall, foundation structure engineering, etc. It can solve the problem of inability to accurately judge the defects of the pile body and lower part, etc., and achieve the effect of light weight and small volume

Inactive Publication Date: 2015-05-06
CHINA ACAD OF BUILDING RES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under some specific measurement conditions, it is impossible to accurately judge the defects on the pile body and lower part

Method used

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  • Measuring instrument for foundation pile low strain detection and on-site monitoring system
  • Measuring instrument for foundation pile low strain detection and on-site monitoring system
  • Measuring instrument for foundation pile low strain detection and on-site monitoring system

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Experimental program
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Embodiment Construction

[0014] The specific implementation methods and steps of on-site testing are as follows:

[0015] (1) According to the on-site situation, choose wired mode acquisition or local area wireless mode acquisition, and only one acceleration or velocity channel can be connected during preliminary detection;

[0016] (2) If the wireless mode is selected, the sensor needs to be connected to any acquisition channel interface of the wireless terminal; if the wired mode is selected, the sensor should be connected to any acquisition channel interface of the foundation pile dynamic tester;

[0017] (3) According to the connected channel, set the opened channel or wireless terminal and the corresponding sensitivity inside the foundation pile dynamic tester;

[0018] (4) The sensor is installed on the specified position of the pile top of the measured pile;

[0019] (5) if image 3 As shown, strike the top of the pile with the hammer body in the vertical direction;

[0020] (6) The measured...

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PUM

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Abstract

The invention relates to a measuring and recording instrument and a monitoring system, wherein the measuring and recording instrument is used for measuring hammering force and pile body vibration in foundation pile low strain detection, and the monitoring system is used for monitoring on-site detection personnel. The instrument can be flexibly connected with a force sensor, a speed sensor, an acceleration senor and the like in an adaptive mode. The instrument can conduct tests in multiple aspects on an on-site tested foundation pile. Meanwhile, the local area wireless function can be started, and a wireless terminal which is connected with the instrument in an adaptive mode is started. The wireless terminal can be connected with a force sensor, a speed sensor, an acceleration senor and the like in an adaptive mode. The wireless terminal is carried with the on-site detection personnel to be flexibly used on a detection site, and therefore on-site testing is convenient. The on-site detection instrument has the 3G data transmission function and the GPS positioning function and can conduct communication with a data center server. The on-site detection instrument is used for monitoring detection behaviors of the on-site detection personnel.

Description

technical field [0001] The invention relates to a test recording instrument for measuring hammering force and pile body vibration in foundation pile low-strain detection and a supervision system for supervising on-site inspection personnel, belonging to the field of pile foundation engineering quality detection in civil engineering. Background technique [0002] In the quality inspection of pile foundation engineering, the low strain detection method of foundation pile is often used to detect the structural integrity of pile body in pile foundation. In the traditional low-strain detection of foundation piles, generally only one acceleration sensor is used to measure the propagation characteristics of one-dimensional longitudinal waves in the pile body to judge the integrity of the pile body. Under some specific measurement conditions, it is impossible to accurately judge the defects on the upper and lower parts of the pile. [0003] At the same time, with the expansion of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
CPCE02D33/00E02D5/22
Inventor 陈凡李建民王海渊金隆韩玉仲张峰
Owner CHINA ACAD OF BUILDING RES
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