Temperature control pile-soil interface direct shear test device

A test device and interface technology, applied in measuring devices, using stable shear force to test the strength of materials, instruments, etc., can solve the problems that cannot meet the needs of engineering practice, the establishment of theoretical models has not been unified, and the field testing methods of energy piles are insufficient. and other problems, to achieve the effect of easy material acquisition, reduced size effect and good stability

Inactive Publication Date: 2016-08-31
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
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Problems solved by technology

[0004] At present, the research on energy piles still has insufficient on-site testing methods, and the establishment of theoretical models has not yet been unified, which cannot meet the actual needs of the project.

Method used

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  • Temperature control pile-soil interface direct shear test device
  • Temperature control pile-soil interface direct shear test device
  • Temperature control pile-soil interface direct shear test device

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Experimental program
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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] As shown in the figure, a temperature-controlled pile-soil interface direct shear test device consists of a gantry 1, a lateral constant stiffness loading system, a pile-soil interface simulation system, a water circulation temperature control system, a normal loading system, and data acquisition. The system consists of six parts.

[0024] The main function of the gantry 1 is to provide reaction support points for other systems in the device, and there is a sliding track 2 on the left side wall.

[0025] The lateral constant stiffness loading system includes a reaction frame 3, a spring fixing plate 4, a spring 5, a spring guide rod 6, and a loading plate 7, which are used to simulate the elastic earth pressure on the pile side that is not disturbed by heat exchange. The reaction force frame 3 is 900mm in length and consists of four threaded cylindrical steel rods w...

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Abstract

The invention relates to a temperature control pile-soil interface direct shear test device which comprises a portal frame, a lateral constant stiffness loading system, a pile-soil interface simulation system, a water circulation temperature control system, a normal loading system and a data collection system. The portal frame mainly provides a counter-force supporting point for the other systems. The lateral constant stiffness loading system comprises a counter-force frame, a spring fixing plate, a spring, a spring guide rod and a loading plate; the pile-soil interface simulation system comprises a pile lateral soil body box and a pile body box; the water circulation temperature control system comprises a constant temperature water tank, a heater, a refrigerator, a circulating water pump, a water guiding pipe, a valve, a flow meter and a temperature sensor; the normal loading system mainly refers to server hydraulic loading. According to the device, pile-soil interface addition temperature stress monitoring testing, hot and cold cycle after-construction pile-soil interface shear-resistance change rule testing and other testing during temperature field changing can be performed, and then energy pile load-carrying performance impact factors are analyzed.

Description

technical field [0001] The invention belongs to the technical field of test equipment for construction, and relates to a temperature-controlled pile-soil interface direct shear test device. Background technique [0002] In recent years, with the rapid development of urban and rural areas and the continuous reduction of fossil energy, the development and utilization of new energy has become an inevitable requirement for the sustainable development of society. Underground shallow geothermal resources are a sustainable green energy that can achieve energy conservation and emission reduction, and it has large reserves, wide distribution, and strong stability. However, the traditional ground source heat pump system mostly uses drilled pipes as underground heat exchangers, which is expensive and occupies a large area, which limits the popularization and application of geothermal resources. The energy pile technology embeds the heat exchanger directly in the pile foundation of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0025G01N2203/0224
Inventor 刘俊伟李晓玲于秀霞尚文昌朱娜
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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