Method for testing transverse wave velocity of indoor compaction test piece
A technology of shear wave velocity and test method, applied in the measurement of ultrasonic/sonic/infrasonic waves, the use of sonic/ultrasonic/infrasonic waves to analyze solids, measuring devices, etc.
Inactive Publication Date: 2012-07-25
CHONGQING JIAOTONG UNIVERSITY
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[0004] In order to solve the problems that there is no clear test method for the shear wave velocity of the indoor compacted soil sample in the prior art, the present invention proposes a test method for the shear wave velocity of the indoor compacted specimen
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[0019] attached figure 1 It is a schematic diagram of the method for testing the shear wave velocity of the indoor compacted test piece of the present invention. In the figure, 1 is a rubber cushion, 2 is a shock pad, 3 is a test piece, 4 is a tie rod, 5 is a rigid support, and 6 is a wave detection device, 7 is the specimen holder, and 8 is the trigger detector. As can be seen from the figure, the shear wave velocity testing method of the indoor compaction test piece of the present invention comprises the following steps:
[0020] ⑴ According to the compaction test standard JTGE40-2007 "Highway Geotechnical Test Regulations", the compaction test piece is prepared, and electric compaction is adopted, and the size of the test piece is φ100mm×L125mm standard test piece;
[0021] ⑵Use the specimen support to place the specimen horizontally between two symmetrically arranged rigid supports. One side of the specimen is connected to the rigid support through a The receiving geopho...
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The invention provides a method for testing the transverse wave velocity of an indoor compaction test piece, and the method is used for solving the problems that no definitive methods for testing the transverse wave velocity of an indoor compaction soil sample exist in the prior art. According to the method for testing the transverse wave velocity of the indoor compaction test piece, provided by the invention, the testing on the transverse wave velocity is carried out through adopting a compaction test piece as a test piece for testing the transverse wave velocity, adopting a rigid support as a test piece supporting device, adopting a high-frequency wave detector to test vibration signals and adopting an artificial striking manner to compact the test piece. The method for testing the transverse wave velocity of the indoor compaction test piece, provided by the invention, has the beneficial technical effects that: a method for monitoring the transverse wave velocity of an indoor test piece is provided, not only is the study on the propagation characteristics of waves in a soil and rock composite medium conduced, but also the application of wave testing techniques to geotechnical engineering can be promoted.
Description
[0001] technical field [0002] The invention relates to a method for testing the compaction quality and stability of soil foundations, in particular to a method for testing the shear wave velocity of an indoor compaction test piece. Background technique [0003] At present, in engineering construction, wave test technology is widely used to evaluate the compaction quality and stability of soil foundation (including soil-rock composite foundation), and the interpretation of field test results must be based on the study of wave propagation characteristics of soil-rock composite media, especially through The fluctuation propagation law obtained from the wave velocity test results of soil-rock composite specimens with different water contents, different dry densities, different compaction times, and different soil-rock ratios can provide an important theoretical basis for the interpretation of field wave test results. Compared with rock specimens, due to the large porosity, low...
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IPC IPC(8): G01N29/07G01H5/00
Inventor 赵明阶荣耀刘长发汪魁周军平刘运来
Owner CHONGQING JIAOTONG UNIVERSITY