Horizontal and uplift combined loading device and method for pile foundation model test

Abstract

The invention discloses a horizontal and uplift combined loading device and method for a pile foundation model test. The horizontal and uplift combined loading device comprises a model pile embedded in a soil in a model slot; a triangular supporting frame A is arranged on the side face of the model slot; a counter-force beam C is arranged above the model groove; a pile head connecting member B isarranged on the upper part of the model pile; and the pile head connecting member B winds across a horizontal loading fixed pulley of the triangular supporting frame A and an uplift combined pulley ofthe counter-force beam C through a steel wire rope and is connected to a loading component which is under the fixed pulley. The position of the horizontal loading fixed pulley and the uplift combinedpulley is adjusted, the weight is placed on the corresponding loading component according to the test requirement, and the loading test of the radial or axial direction or radial and axial combined directions of the model pile is achieved. The horizontal and uplift combined loading device and method for the pile foundation model test can independently apply the horizontal loading and the uplift loading to the model pile at the same time, and the change of the uplift and the horizontal loading can be negligible when the horizontal displacement and the vertical displacement occur on the top ofthe model pile so that the bearing behavior of the model pile under the combined loading of the uplift and horizontal directions can be better analyzed.

Description

technical field [0001] The invention relates to the field of geotechnical engineering foundations, in particular to a horizontal and uplift combined loading device and method for pile foundation model tests. Background technique [0002] As a main form of anti-uplift foundation, anti-lift piles are widely used in underground building (structure) foundations, power transmission and communication line tower foundations, towering structure foundations, and offshore oil piles due to their strong bearing capacity and high cost performance. Drilling platform foundation and pile static load test, anchor pile foundation of cableway bridge and cable-stayed bridge, etc. In recent years, with the rapid advancement of urbanization in my country, urban land use has become more and more tense, which has prompted many buildings (structures) to develop into deeper underground spaces. Correspondingly, there will be more and more foundations bearing greater and greater uplift loads, so the r...

AI Technical Summary

Problems solved by technology

[0003] Field test is one of the methods of pile foundation research. Although it can accurately reflect the bearing deformation characteristics of pile foundation, it involves complex soil layers and the variables are not easy to control.

In addition, the on-site test period is long, the cost is huge, and limited by the site and test equipment, it can only be applied to a small number of projects.

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