Earth pressure test device and method for steel sheet pile retaining wall considering the influence of medium principal stress
A test device, steel sheet pile technology, applied in the direction of applying stable tension/pressure to test material strength, measuring device, foundation structure test, etc., can solve the problems of lack of research, stress redistribution can not be ignored, etc., to achieve low cost, The effect of concise test method and simple structure
Active Publication Date: 2021-09-03
HOHAI UNIV
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Problems solved by technology
A large number of field tests have proved that the stress redistribution caused by soil excavation cannot be ignored, however, the research on this stress adjustment process has been lacking
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[0047] Such as Figure 1 to Figure 12 As shown, the present invention provides a steel sheet pile retaining wall earth pressure testing device considering the influence of medium principal stress, the earth pressure testing device includes a steel sheet pile retaining wall, a model groove 1, an angle control device and an earth pressure monitoring and acquisition device;
[0048] The steel sheet pile retaining wall includes four steel sheet piles, two rotatable thin rods and three fixed thin rods. The rotatable thin rods are respectively rotatable thin rod one 6 and rotatable thin rod two 7, and the three fixed thin rods are respectively fixed thin rod one 8, fixed thin rod two 9 and fixed thin rod three 10;
[0049] Both sides of each steel sheet pile are provided with locking structures 11, steel sheet pile 1 2, steel sheet pile 2 3, steel sheet pile 3 4 and steel sheet pile 4 5 are sequentially connected through the locking structure 11 to form a retaining wall, each The o...
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Abstract
The invention relates to an earth pressure test device and method for a steel sheet pile retaining wall considering the influence of the medium principal stress, which belongs to the earth pressure test technology in soil mechanics. The earth pressure testing device includes a steel sheet pile retaining wall, a model groove, an angle control device and an earth pressure monitoring and acquisition device; the steel sheet pile retaining wall includes four steel sheet piles, two rotatable thin rods and three fixed thin rods, four steel plate The piles are steel sheet pile 1, steel sheet pile 2, steel sheet pile 3 and steel sheet pile 4. Steel sheet pile 1, steel sheet pile 2, steel sheet pile 3 and steel sheet pile 4 are connected in sequence through a locking structure to form a retaining wall. Steel sheet pile 1 and the four steel sheet piles are each fixed in the side wall of the model groove by a fixed thin rod, and an angle control device is respectively installed on the top of the two fixed thin rods in the model groove side wall; the angle control device includes a rotating disk and The connection rope; the earth pressure monitoring and acquisition device includes a frequency meter and four earth pressure sensors, and one earth pressure sensor is installed on the retaining side of each steel sheet pile.
Description
technical field [0001] The invention relates to the technical field of soil pressure testing in soil mechanics, in particular to a soil pressure testing device and method for steel sheet pile retaining walls considering the influence of medium principal stress. Background technique [0002] Due to the obvious advantages of fast construction, small footprint and recyclable utilization of steel sheet piles, whether it is in permanent structures such as piers, retaining walls, flood embankments or temporary structures such as cofferdams, foundation pits, and flood control, Steel sheet piles are widely used, such as steel sheet pile retaining walls spliced by U-shaped steel sheet piles. As one of the important loads on the steel sheet pile retaining wall, earth pressure has a direct impact on the load transfer and stress mechanism of the steel sheet pile retaining wall. Therefore, the calculation of earth pressure is particularly important in the structural design of steel sh...
Claims
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IPC IPC(8): G01N3/02G01N3/08G01D21/02E02D33/00
CPCE02D33/00G01D21/02G01N3/02G01N3/08
Inventor 赵伏田刘军张福海杨晓科单鹏刘明清肖治民周浩孙磊王贺
Owner HOHAI UNIV