Test device and method for anchoring wall-blocking movable door under active and passive deformation modes
A deformation mode and test device technology, applied in measurement devices, mechanical devices, soil material testing, etc., can solve problems such as redistribution of earth pressure on the back of the wall, changing the force characteristics of the supporting structure, and the difficulty of applying traditional design theories. Achieve easy disassembly and handling, save material, and ensure accuracy
Pending Publication Date: 2017-11-24
SHANDONG UNIV
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Problems solved by technology
But on the other hand, the soil arch effect will also cause the redistribution of the soil pressure on the back of the wall, and it has the characteristics of dynamic evolution, which significantly changes the mechanical characteristics of the support structure, making it difficult to apply the traditional design theory
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[0067] After passing the transparent quartz sand through a 5mm sieve hole, mix it evenly and place it in a sealed bucket. After standing still for 1 day, configure the bucket as soil with an optimal moisture content of 10.1%, and place it in a sealed bucket for 1 day; adjust the device , make the jack, the pressure sensor, and the rigid baffle contact, and make the rigid baffle clamp between the first and second bottom plates; arrange the earth pressure cell on the first, second bottom plate, and the upper surface of the rigid baffle according to the preset size; According to 80% of the filling in 3 layers, each contact surface should be "brushed"; after the filling is completed, start the high-speed camera and laser rangefinder; the jack is loaded in stages, and the data of the earth pressure cell and the displacement of the rigid baffle are recorded in stages. Until the soil is destroyed; according to the video and recorded data, the analysis of the damage in the passive disp...
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The invention discloses a test model device and a test model method for anchoring a wall-blocking movable door under active and passive deformation modes. The device comprises brackets; a model box and a high-speed camera are supported on the two brackets correspondingly; the upper part of the model box is open; a first bottom plate and a second bottom plate are fixedly arranged at the bottom of the model box; the first bottom plate and the second bottom plate are supported on the brackets; a rigid baffle plate is arranged between the first bottom plate and the second bottom plate; the rigid baffle plate is supported by a pressure sensor, a jack and a pedestal jointly; and the jack is subjected to gradation loading and unloading by observing the reading number of the pressure sensor, the high-speed camera is used for recording the displacement process of soil granules, and a laser range finder is used for recording active and passive displacement of the rigid baffle plate.
Description
technical field [0001] The invention belongs to the category of "soil arch effect" exploration test, and relates to a new device structure and connection form, specifically, it is a new type of active and passive deformation mode anchored retaining wall movable door test device and test method, which can be used to explore The principle of anchoring the retaining wall and providing theoretical guidance for slope reinforcement engineering. Background technique [0002] At this stage, the "soil arch effect" has a non-negligible effect on the law of soil stress transfer, so it is studied in pile-supported embankment, sheet pile wall, anti-slide pile, anchor pile and other reinforcement technologies. In the conventional pile-supported embankment design method, the limit capacity of the soil arching effect of the embankment fill is determined first, and then the tensile force to be borne by the reinforced material is determined according to the load acting on the top surface of t...
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Login to View More IPC IPC(8): G01N19/00G01N3/08G01N33/24
CPCG01N3/08G01N19/00G01N33/24
Inventor 宋修广董行张宏博陈奇万立尧刘源
Owner SHANDONG UNIV