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Model test device for influences of open cut foundation pit on nearby building foundation and operation method

A model test device and basic technology, applied in the test of infrastructure, construction, infrastructure engineering, etc., can solve the problems of complex test process, inability to obtain general conclusions, and single form of subway station test research, and achieve convenient operation and structure. stable effect

Active Publication Date: 2016-07-20
SHIJIAZHUANG TIEDAO UNIV
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Problems solved by technology

[0004] The traditional subway station test research form is relatively single, real-time monitoring is difficult, the test process is relatively complicated, and real-time comparative analysis of various working conditions cannot be achieved, which brings great obstacles to the stability research of subway foundation pits and cannot be obtained. comprehensive general conclusion

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  • Model test device for influences of open cut foundation pit on nearby building foundation and operation method

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] The structure of the present invention is as figure 1 As shown, it includes a working condition simulation frame, a building simulation system, and a comprehensive monitoring and analysis system. The working condition simulation frame includes a structural frame 1 and a test bench base 3. The structural frame 1 surrounds the test bench base 3 to form a sealed enclosure. retaining structure; the building simulation system is divided into two groups, and the two groups of mirror images are respectively arranged on the base 3 of the test bench, and each group of building simulation system includes a simulated rock and soil body 4, a water tank 12, a lifting water tank 11, a prefabricated pile foundation 5, and a load 6. The simulated rock and soil body 4 is placed on the test bench base 3, the lifting water tank 11 is connected wi...

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Abstract

The invention discloses a model test device for influences of an open cut foundation pit on a nearby building foundation and an operation method, and relates to the technical field of foundation construction. The model test device comprises a working condition simulation frame, building simulation systems and a comprehensive monitoring and analyzing system. The working condition simulation frame comprises a structure frame and a test bed base. The two building simulation systems are independently arranged on the test bed base. Each building simulation system comprises a simulation rock and earth mass, a water trough, a lifting water tank, a precast pile foundation and a load, wherein the lifting water tank communicates with the water trough, the water trough communicates with the simulation rock and earth mass, the precast pile foundation extends into the simulation rock and earth mass, and the load is arranged on the precast pile foundation. The comprehensive monitoring and analyzing system comprises displacement induction heads pre-embedded in the simulation rock and earth masses and a comprehensive monitoring and analyzing terminal connected with the displacement induction heads. By means of the model test device and the operation method, contrastive analysis can be conducted on multiple sets of different parameters in real time, the test efficiency is greatly improved, the test result has higher general representativeness, and beneficial reference is provided for scientific research and technologies of foundation pit excavation.

Description

technical field [0001] The invention relates to the technical field of foundation construction, in particular to a model test device and an operation method for the influence of open-cut foundation pits on adjacent building foundations. Background technique [0002] With the increasingly congested traffic situation in large and medium-sized cities, the construction of subways has become an important transportation hub to drive urban economic development, relieve traffic pressure, and stimulate commercial economy. [0003] Subway construction can be divided into open excavation and underground excavation. The underground excavation method is costly, difficult to control and difficult to construct the subway. It is relatively small, but subsequently, the open-cut construction of the subway will inevitably excavate the road surface, which will affect the smooth traffic on the ground and the stability of the buildings on the ground. Therefore, it is of great significance to stu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 杜彦良张骞赵维刚王景春高阳李剑芝
Owner SHIJIAZHUANG TIEDAO UNIV
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