Soil sample resonance column device
A soil sample and resonance column technology, applied in the field of soil sample resonance column devices, can solve the problems of measurement accuracy and accuracy limitations, and achieve the effect of reducing influence and improving accuracy
Active Publication Date: 2019-08-23
GUANGZHOU GUOGUANG INSTR
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Problems solved by technology
[0005] Both of the above two methods have defects such as greatly limited measurement accuracy and accuracy.
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[0028] Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further:
[0029] see Figure 4 to Figure 7 , the present invention provides a soil sample resonance column device for measuring soil samples, comprising a cylindrical plexiglass container 12, in which a soil sample 1, a mass 2, and a steel rope 4 are arranged. , block pulley 5 and balance weight 6.
[0030] The base 3 is fixed on the bottom surface of the plexiglass container 12, the soil sample 1 is fixed on the base 3, the soil sample is packed by a rubber film, and is installed on the base 3 by the assembly shell, the rubber film is close to the inside of the assembly shell, and Vacuumize to ensure that the soil sample is cylindrical, the mass block 2 is installed on the upper end of the soil sample 1, and after the installation of the soil sample 1 is completed, the assembly shell is removed. The mass block 2 includes a cross 7, a connector 11, four magnets...
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The invention discloses a soil specimen resonant column device, which comprises a base, a mass block, a vertical displacement sensor, a steel rope, a pulley block and a balance block, wherein the mass block comprises a cross frame, magnets, an accelerometer and a balancing weight; bar magnets are arranged at the four ends of the cross frame; coils sleeve two ends of each bar magnet; and the accelerometer and the balancing weight are arranged on the radial edge of the cross frame respectively, and have equal weight, so that the mass block is balanced. The bottom end of the soil specimen is fixed on the base and the top end of the soil specimen is connected with the center of the mass block; the balance blocks and the mass blocks, which have equal weight are connected by the steel rope, and are balanced through the pulley block, so that the effects of the mass blocks on the soil specimen in the test process are reduced. When current flows through the coils, the soil specimen is twisted by driving the mass blocks; the accelerometer is used for detecting an angular acceleration signal of twisting of the soil specimen; and the resonant frequency and the damping ratio of the soil specimen can be measured through the angular acceleration signal.
Description
technical field [0001] The invention relates to a soil sample resonance column device. Background technique [0002] When bridges, houses and other buildings on the ground are subject to earthquakes, traffic load vibrations or mechanical vibrations, the soil and these building systems are subjected to vibrations of different amplitudes and frequencies. Once the resonance frequency of these building systems falls below the externally loaded frequency range, resonance will occur, which will cause great harm to the building. Studying the dynamic properties of soil is of great significance to earthquake prevention, shock absorption and disaster resistance. [0003] The resonance column is an important test equipment for testing soil dynamic parameters. It is used to measure and analyze soil dynamic properties by applying loads of different frequencies and amplitudes to the soil. It is used to measure the properties of dynamic soil from small strain to medium strain. The theore...
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IPC IPC(8): G01N3/00
CPCG01N3/00
Inventor 杨文龙李相崧
Owner GUANGZHOU GUOGUANG INSTR