Tensile strength test device and use method thereof

Abstract

The invention discloses a tensile strength test device and a use method thereof, and relates to the technical field of constructional engineering. A plurality of first sliding grooves are formed in the tabletop of a first test bed, a plurality of balls are clamped in the first sliding grooves, and the balls are in sliding connection with the first sliding grooves; the side walls of the two stretching boxes are connected in a clamped mode, a bottom plate is arranged at the bottom of the cavity, second sliding grooves corresponding to the first sliding grooves are formed in the bottom of the bottom plate, and balls are clamped in the second sliding grooves and connected with the second sliding grooves in a sliding mode; the cover plate is detachably connected to the top of the cavity; the force transmission system is arranged on the table top of the first test bed; the refrigerating system is arranged in the two stretching boxes and comprises a plurality of refrigerating steel pipes which are respectively embedded in bottom plates of the two stretching boxes; one end of the silicone tube is connected with the refrigeration steel tubes of the two stretching boxes, and the other end is connected to the output end of the constant-temperature circulating liquid bath. The device has the advantages that the two stretching boxes can be effectively prevented from dislocation and displacement during sample preparation, and the accuracy of test data is improved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a tensile strength test device and a method for using the same. Background technique [0002] For seasonally frozen soils, frost heave damage is the main cause of building damage in the area. The existence of the pile foundation in the cold area will limit the frost heave of the original frozen soil, which will lead to the tangential frost heave force of the frozen soil on the pile foundation, resulting in the phenomenon of freezing pull of the pile foundation, which will endanger the stability of the structure in the cold area. [0003] At present, experts and scholars generally believe that in the process of soil frost heave, the force on the conical pile foundation can be decomposed into the tangential frost heave force along the direction of the hypotenuse of the foundation and the positive pressure along the normal direction of the hypotenuse of the foundati...

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Problems solved by technology

[0005] The invention provides a tensile strength test device and its use method, which are used to solve the problem of dislocation sliding and disengagement between the soil in the stretching box and the stretching box in the prior art when the tensile strength is high The problem with test results

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