A test device for simulating the flexural performance of pile foundations

Abstract

The invention discloses a testing apparatus for simulating flexural behavior of a pile foundation. The testing apparatus comprises a model case, a support mounted over the model case and a pile foundation moment load loading system, the model case is filled with foundation soil, and a test pile is inserted into the foundation soil; the pile foundation moment load loading system comprises a loading platform, a dowel bar fixing plate, a dowel bar structure and a pile cap, the loading platform is connected with a steel wire rope which extends upwards and then horizontally extends to the upper end of the dowel bar structure, two force application bars used for respectively applying tensile force to one side of the test pile and applying pressure to the other side of the test pile under drive of the steel wire rope are arranged between the dowel bar structure and the pile cap, the upper ends of the force application bars are connected with the dowel bar structure rotationally, ad the lower ends of the force application bars are fixedly connected with the pile cap. The testing apparatus can apply pure moment load to the test pile, and is used for studying bearing characteristics of the pile cap under the pure moment load action .

Description

technical field [0001] The invention belongs to the technical field of pile foundation tests, in particular to a test device for simulating the bending resistance of pile foundations. Background technique [0002] In the actual work of the pile foundation, its upper part is often subjected to very complex loads, including vertical loads, horizontal loads, and bending moments. At present, when studying the bending moment acting on the pile foundation, there is a lack of a practical test device. At present, the bending moment in the test is often applied to the top of the pile with eccentric load, but the eccentric load will not only generate bending moment on the pile top, but also The pile produces vertical downward pressure, so it is impossible to study the mechanical characteristics of the pile foundation under the action of bending moment alone. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the above-mentione...

AI Technical Summary

Problems solved by technology

At present, when studying the bending moment acting on the pile foundation, there is a lack of a practical test device. At present, the bending moment in the test is often applied to the top of the pile with eccentric load, but the eccentric load will not only generate bending moment on the pile top, but also The pile produces vertical downward pressure, so it is impossible to study the mechanical characteristics of the pile foundation under the action of bending moment alone

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