Parallel gradual-loading three-shaft sample making device

Abstract

The invention relates to the field of indoor soil engineering test of civil engineering, in particular to a parallel gradual-loading three-shaft sample making device. The parallel gradual-loading three-shaft sample making device comprises a pressure applying mechanism, a sample bearing mechanism, a support mechanism, a cutting mechanism and a three-shaft film bearing cylinder, wherein the supportmechanism comprises a support top plate, a support post, a support bottom plate, four sample bearing cylinder support holes, knob bases and a water drainage hole, the support top plate and the supportbottom plate are fixedly connected to form a whole by the support post, the four sample bearing cylinder support holes are uniformly formed in the support top plate, the knob bases are uniformly arranged on the support bottom plate, the sample bearing mechanism is arranged on the support mechanism, cement is injected to the sample bearing mechanism by soil injector, the pressure applying mechanism can be matched with the sample bearing mechanism to apply pressure onto the cement so as to obtain four female body samples, and the female body samples are placed in a three-shaft film bearing cylinder and then are cut to form four standard three-shaft samples by a cutting mechanism. By the parallel gradual-loading three-shaft sample making device, the problems that only a single sample can bemade by an existing cement three-shaft sample with high moisture content each time and the difference among the made samples is too large are solved.

Description

technical field [0001] The invention relates to the field of indoor geotechnical testing of civil engineering, in particular to a parallel-type grading loading triaxial sample sampler. Background technique [0002] Coastal areas are economically developed areas in my country. With the continuous expansion of building foundation areas in coastal areas, more and more buildings need to be built on soft soil foundations. Due to its high water content and poor bearing capacity, soft soil makes it difficult to build large buildings in soft soil areas. The treatment of soft soil foundations has become a problem that must be solved in the construction industry. Low cost, strong practicability, low environmental pollution and fast construction are widely used. In order to verify the reliability of the cement-soil reinforcement method, a triaxial compression test is required to measure its mechanical properties before engineering design. Cement-soil with soft soil as the main raw ma...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a triaxial sample preparation device with parallel staged loading to solve the difficulty in making the existing high moisture content cement soil triaxial sample, which can only be made into a single sample each time. The individual samples vary too much and cannot accurately reflect the real stress of cement and soil on site.

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