Measuring device and method for vertical displacement of large structure body and surface settlement
A technology for large-scale structures and surface subsidence, applied in the field of mechanical measurement, can solve problems such as affecting measurement accuracy, increasing system complexity, and error in measurement results, and achieving the effect of improving measurement accuracy
Active Publication Date: 2018-10-02
西安敏文测控科技有限公司
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Problems solved by technology
The main problem with this type of displacement sensor at present is that the CCD image sensor needs to be used in conjunction with a collimated laser, which increases the complexity of the system
The problem with this solution is: when the measurement system is used in tunnels, caves, etc., both the CCD camera and the measurement target will have displacement and deformation due to the influence of external loads, and because the installation positions of the two are different , the displacement of the measurement target and the CCD camera caused by the external load is different, resulting in a large error in the measurement result, which affects the measurement accuracy
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[0040] The measurement system of the present invention is mainly used for displacement or deformation measurement of key parts such as the top and waist of large-scale structures, and at the same time measure its surface settlement, wherein large-scale structures include tunnels, caves, houses, basements and bridges, etc. as an example.
[0041] Such as figure 1 and figure 2 As shown, the measuring device for vertical displacement of large structures and surface settlement includes a data processing center 20 arranged at the far end and several measuring units, wherein each measuring unit includes an imaging system 12, a reference target 14, a static level 1. Not less than one measurement target 13, the static level includes a reference settlement probe 21 and several measurement settlement probes 22 connected by a liquid pipe 23. The data processing center 20 is set at the far end of the measurement, the imaging system 12 is installed at a suitable position of the large st...
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The invention discloses a measuring device and method for vertical displacement and ground surface settlement of a large structure body. The measuring device comprises a plurality of measuring units and a data processing center arranged at a far end; each measuring unit comprises an imaging system, a hydro-static leveling instrument, a datum target, one or more measuring targets and one or more laser distance measuring instruments; and after obtaining measured results of the hydro-static leveling instrument, the laser distance measuring instruments and the imaging system, the data processing center calculates to obtain side wall parameters, top displacement parameters and ground surface settlement parameters of the large structure body according to measured results of a settling probe, the datum targets, the measuring targets and the laser distance measuring instruments. The measuring device overcomes the problem that measuring errors of the system are finally caused by deformation due to the fact that the imaging system bears a load or a mounting foundation of the imaging system is deformed and the like, so that measuring accuracy is improved; and meanwhile, non-disturbance measurement of the ground surface settlement parameters is realized, so that passing of vehicles inside is not affected for large structures such as a tunnel, and therefore, the measuring device has relatively high popularization and application value.
Description
technical field [0001] The invention belongs to the technical field of mechanical measurement, and relates to a displacement and deformation measurement device for large structures, in particular to a self-calibrating remote displacement or deformation measurement device and method. Background technique [0002] Large-scale structures include bridges, dams, tunnels, slopes and housing buildings, etc., and their deformation mainly includes static deformation and dynamic deformation. Short-term deformation caused by wind, temperature, earthquake, traffic load or on-site construction, etc., its parameter measurement plays an important role in the safety assessment and analysis of the target. [0003] For traditional large structures such as bridges, the instruments for deformation detection include dial indicators, dial gauges, accelerometers, levels, and theodolites. At present, these instruments are still widely used in bridge acceptance and regular inspection, but they requ...
Claims
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IPC IPC(8): G01B11/02G01B11/16G01C5/04
CPCG01B11/02G01B11/16G01C5/04
Inventor 高文武郭敏
Owner 西安敏文测控科技有限公司