Loading system and method for simulating soil pressure in test room

Abstract

The invention provides a loading system for simulating soil pressure in a test room. The loading system is arranged in a test pit, and test soil is arranged in the test pit. The loading system comprises loading actuators, wherein each loading actuator is arranged on an actuator installation base; the actuator installation base is arranged on a wall of the test pit; a plurality of layers of loading actuators are distributed along the vertical direction; a plurality of loading actuators are uniformly distributed on each layer along the horizontal direction; the other end of each loading actuator is connected with the front side of a horizontal loading beam which can move forwards and backwards through a dowel bar; a plurality of layers of horizontal loading beams are distributed along the vertical direction to form a soil pressure loading surface; the number of layers of the horizontal loading beams is equal to the number of layers of the loading actuators; and the test soil is arranged behind the horizontal loading beams. The invention also provides a method for simulating the soil pressure by using the loading system. By adoption of the loading system and the method, simulation of soil media which are stacked in a large scale can be realized.

Description

technical field [0001] The invention relates to a loading system and a simulation method for horizontally loading large-scale heaped soil media in a laboratory to simulate the pressure layered distribution of soil media in reality. Background technique [0002] In the process of civil engineering construction, it is often necessary to study the pressure distribution in the soil medium. Many problems that need to be solved in engineering are related to the pressure distribution in the soil layer, such as slope stability, pile-soil interaction and Pile bearing capacity issues, etc. However, the current common research method is to conduct research through small-scale model tests, but when the simulated object has soil media, gravity becomes a physical quantity that is difficult to simulate, and gravity is the cause of deformation and destruction of soil and structures. A basic factor whose consolidation settlement, lateral earth pressure on the structure, etc. are all directl...

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Problems solved by technology

[0003] At present, the common method of earth pressure loading in China is to load the earth pressure in a small-scale model test, and it has not been seen to simulate the earth pressure loading on a large-scale rock-soil medium.

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