A test device for simulating hydraulic splitting of concrete members under different stress conditions

Abstract

The invention relates to a hydraulic splitting test device for simulating concrete components under different stress conditions, and relates to the technical field of hydraulic splitting test devices for concrete components. The invention comprises a cuboid mold with an opening on one side. Concrete is poured into the mold to obtain a concrete component. Eight high-pressure resistant water bends are preset in the concrete component, and a water pressure sensor joint is arranged at the end of each high-pressure resistant water bend; the steel is pulled out from the concrete component. The initial cracks are prefabricated on the sheet, and a certain range of grooves are ground around the cracks, strain gauges and clip-type extensometers are arranged, filled and ground with water-proof insulating glue; water-sealed steel plates are arranged on the components, and water inlets and belt Seal the exhaust port of the cap. Based on the invention, the hydraulic splitting test research of the concrete structure under the combined working conditions of different stress conditions and different initial crack inclination angle conditions can be carried out.

Description

technical field [0001] The invention relates to the technical field of test devices for hydraulic splitting of concrete components. Background technique [0002] Hydraulic fracturing is a process in which the movement of water in the gaps of rock mass or concrete is coupled with the deformation of surrounding solids. It is manifested by high-pressure water flow driving the existing cracks and voids in rock mass or concrete to expand, expand, and interpenetrate. [0003] With the rapid development of dam-building technology, a batch of 200m-300m large concrete high dams have been built and put into operation. The problem of hydraulic splitting of concrete structures under the action of high water head has attracted much attention and has become a basic topic widely studied in the field of hydraulic engineering. The mechanism of hydraulic splitting of concrete is complicated, and the problem of hydraulic splitting of concrete components in actual engineering is complicated. ...

AI Technical Summary

Problems solved by technology

Due to the limitations of test equipment and test technology, previous scholars only conducted high-pressure water splitting tests on concrete specimens under uniaxial tension and compression conditions, and could not carry out hydraulic splitting tests under different initial crack inclination angles.

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