Novel ground surface settlement test device and method
A technology for surface subsidence and testing equipment, which is applied in measuring equipment, surveying and navigation, height/horizontal measurement, etc. It can solve the problems of laborious testing, increased error, and difficult testing, so as to improve measurement stability and measurement accuracy , the effect of saving manpower and material resources
Active Publication Date: 2016-01-13
ZHEJIANG UNIV
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Problems solved by technology
[0002] In the process of roadbed filling, foundation pit excavation, and large-scale construction and structure construction, surface settlement is an important indicator for monitoring. Traditional surface settlement monitoring methods mainly use level instruments, electromagnetic settlement instruments, etc. These testing methods mainly have the following shortcomings : 1) Manual operation is required, automatic measurement cannot be realized, remote monitoring cannot be realized, and the measurement results are greatly affected by human factors; 2) When there is an obstacle, the line of sight is blocked by using optical instruments, and the test is very difficult, and a lead point measurement is required. Error Increase; 3) In the construction of roads and buildings, due to the limited space, the test is laborious and laborious
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[0042] Take a certain place as the monitoring area, establish a monitoring site, and install two sets of surface subsidence testing devices, of which the device one ( Figure 4 ) and device two ( Figure 5 The rigid rope 10 of ) is connected with the mass block 6 respectively using the aforementioned scheme one and scheme two, while other parts are set in the same way. In the two sets of devices, one end of the rigid rope 10 passing through the casing 11 is fixed in the stable soil layer or bedrock position below the ground through the rigid rope fixing plate 12 and the anchor expansion head 13 . On the basis of the two sets of devices, the above-mentioned monitoring method is used to monitor the ground subsidence of the site.
[0043] At the same time, as a comparison, the settlement is monitored by the leveling method in the prior art.
[0044] According to the measurement needs, the range of the dial indicator in device 1 is selected from 0 to 10mm, and the range of the d...
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The invention discloses a novel ground surface settlement test device and method. The device comprises a supporting device, a pulley, a mass block, a dial indicator, a rigid rope and a sleeve. The pulley is fixed on the top of the inside of the supporting device; the rigid rope winds through the pulley, one end of the rigid rope passes through the sleeve and is fixed in a stabilized soil below the surface or rock stratum position, and the other end of the rigid rope is connected to the mass block, so that the mass block hangs vertically on the rigid rope; the dial indicator is in contact connection with the mass block and is for monitoring the vertical displacement of the mass block. The mode of connection between one end of the rigid rope and the mass block can employ direct connection or movable pulley connection. The monitoring data can be used for remote monitoring through data lines and a wireless transmission module. The test device can be powered by solar cell. The invention can greatly improve measurement precision, improve the measurement stability, achieve real-time automatic remote monitoring, save a lot of manpower and resources, and reduce the cost of monitoring.
Description
technical field [0001] The invention relates to the field of civil engineering testing, in particular to a novel ground settlement testing device and method. Background technique [0002] In the process of roadbed filling, foundation pit excavation, and large-scale construction and structure construction, surface settlement is an important indicator for monitoring. Traditional surface settlement monitoring methods mainly use level instruments, electromagnetic settlement instruments, etc. These testing methods mainly have the following shortcomings : 1) Manual operation is required, automatic measurement cannot be realized, remote monitoring cannot be realized, and the measurement results are greatly affected by human factors; 2) When there are obstacles, the line of sight is blocked by optical instruments, and the test is very difficult. 3) In the construction of roads and structures, due to the limited space, the test is laborious and laborious. Therefore, there is an urge...
Claims
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IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor王奎华王磊张鹏
OwnerZHEJIANG UNIV