Anchor-soil interface performance indoor accelerated degradation test device and use method
A technology for accelerated degradation test and interface performance. It is used in measuring devices, using repetitive force/pulse force to test the strength of materials, instruments, etc. It can solve problems such as differences in mechanical properties and degradation of mechanical properties, and achieve accurate and effective test data. Stability, the effect of eliminating frictional effects
Active Publication Date: 2021-11-19
HUNAN UNIV
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Problems solved by technology
In this way, for the anchor-soil interface, there must be differences in the degradation laws of its mechanical properties in the indoor artificial acceleration environment and the field environment.
However, at present, there is no method aimed at the anchor-soil interface of rock-soil anchorage structures at home and abroad, using the test results in the indoor artificial environment to deduce the degradation law of the mechanical properties of the anchor-soil interface under the field service environment.
Method used
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Embodiment 1
[0046] An indoor artificial environment anchor-soil interface performance accelerated degradation test device mainly includes a confining pressure system, an accelerated degradation environment simulation system, and a control and test system.
[0047] Such as Figure 2 ~ Figure 4 As shown, a stainless steel coil 307 is installed in the pressure chamber 201, and the stainless steel coil 307 communicates with a constant temperature water cycler 306 to control the temperature cycle conditions of the sample; the chassis 202 is provided with a confining pressure water inlet 202a, a suction port 202b, and a saturation port 202c and the loading through hole 202d; the sleeve 203 is provided with a thermal insulation layer 205 to prevent the heat in the pressure chamber 201 from spreading out; the top plate 204 is equipped with a first temperature probe 404, which is used to monitor the temperature in the pressure chamber 201. The upper cock 210 is threaded for sealing; the first wate...
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Abstract
The invention discloses an anchor-soil interface performance indoor accelerated degradation test device and a use method. The test device comprises a confining pressure system, a load circulating system, a temperature circulating system and a dry-wet circulating system. The confining pressure system comprises a base plate, a sleeve, a top plate and a flexible water-resisting layer, and a pressure chamber is formed among the four parts; a T-shaped ventilation piece is arranged at the top of a sample, a plurality of valves are arranged between the ventilation piece and an air exhauster, and the bottom of the sample is communicated with a saturated water cylinder; and a stainless steel coil pipe communicated with the constant-temperature water circulation instrument is arranged in the pressure chamber. The device can effectively simulate the influence of environmental factors such as confining pressure, dry-wet cycle, temperature cycle and load cycle on the anchor-soil interface performance, conforms to the field service environment of the engineering anchor rod, and enables test data to be more accurate and effective. The environment condition is regulated, controlled and simulated in cooperation with multiple testing sensors, and the whole set of testing device can be automatically controlled and can be used for testing the performance degradation rule of the anchor-soil interface in the indoor artificial acceleration environment.
Description
technical field [0001] The invention relates to the anchor support technology often used in projects such as slopes, foundation pits, tunnels, mines, and traffic, and in particular to an indoor accelerated degradation test device for anchor-soil interface performance and a use method thereof. Background technique [0002] Due to the advantages of low cost, simple construction, and mature technology, anchoring support technologies such as bolts (cables) are widely used in geotechnical engineering fields such as foundation pit support, tunnel support, underground structure anti-floating, and slope anchoring. The mechanical properties of the rock-soil mass-anchor interface determine the engineering performance of the rock-soil anchorage structure in service. However, the on-site environmental conditions of rock-soil anchorage structures are mostly very harsh, and they will be subjected to various natural environmental factors (such as humidity, temperature, precipitation and ev...
Claims
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Login to View More IPC IPC(8): G01N3/36G01N17/00
CPCG01N3/36G01N17/00
Inventor 陈昌富朱世民毛凤山蔡焕李伟吕晨阳
Owner HUNAN UNIV