A detection device and detection method for horizontal subgrade coefficient of aeolian sand foundation
A detection device and foundation bed coefficient technology, which is applied in the field of foundation soil survey, foundation structure engineering, construction, etc., can solve the problems such as the inapplicability of the plate load test method, achieve simple structure, comprehensive detection process, and ensure safe operation Effect
Active Publication Date: 2017-11-03
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology
Although the plate load test method can obtain the pressure-displacement curve of the test soil from the elastic stage to the plastic failure process, it is only suitable for measuring the vertical bed coefficient of the foundation soil, and for foundation soils with poor self-supporting properties, such as aeolian sand , since the pit cannot be formed, the plate load test method is not applicable without engineering support measures
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[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
[0056] like Figures 1 to 3 As shown, the present invention provides a detection device for the horizontal subgrade coefficient of aeolian sand foundation, which includes a box body provided with a displacement detection assembly inside; Both the box 1 and the inner box 2 are rectangular boxes with one end open;
[0057] The outer box 1 is a cuboid, and the plate in the outer box 1 away from its opening side and perpendicular to its length direction is the ...
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The invention provides a method and device for detecting horizontal foundation coefficients of an aeolian sand foundation. The device comprises an outer casing box and an inner embedded box which are internally provided with a displacement detection assembly, horizontally arranged and movably connected. The opening side of the inner embedded box is inserted into the opening side of the outer casing box. According to the method, horizontal load is applied on the detection device step by step successively, a load-displacement curve of relative displacement of the inner embedded box and the outer casing box is recorded and drawn, and the load-displacement curve of different depths in an exploratory well is obtained. The detection device is simple in structure and convenient to disassemble and assemble, measurement of the horizontal load-displacement full-process curve of the foundation soil which is poor in independence, such as the aeolian sand foundation is achieved, and the method and device for detecting the horizontal foundation coefficients of the aeolian sand foundation are suitable for various properties of soil. According to the method for detecting the horizontal foundation coefficients of the aeolian sand foundation, the detection process is comprehensive, precise and simple, the stress state of the test working condition and the actual load-bearing working condition of the foundation soil are made to be the same, the availability and accuracy of the detection result are improved, and safe operation of a power transmission line is guaranteed.
Description
technical field [0001] The invention relates to a foundation coefficient detection technology, in particular to a detection device and a detection method for aeolian sand foundation horizontal bed coefficient. Background technique [0002] In order to ensure the safe operation of the transmission line, there are two design control requirements for the bearing capacity and displacement of the tower foundation. However, in the calculation of the horizontal bearing capacity of the transmission tower foundation on the aeolian sand foundation, currently only the bearing capacity is used as a design or checking parameter, and it is impossible to check both the displacement and the bearing capacity. The key reason is the lack of the level of the aeolian sand foundation. The primary task of measuring the horizontal foundation coefficient is to measure the whole process curve of the horizontal pressure-displacement of the foundation soil. [0003] At present, the tests to obtain the...
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IPC IPC(8): E02D1/00
Inventor杨文智鲁先龙崔强童瑞铭陈培郑卫峰
OwnerCHINA ELECTRIC POWER RES INST