Test device for stabilizing pressure under the condition of single pile vertical static load test

Abstract

A test device for the vertical static load test of a single pile under the condition of stable pressurized water. A model box is laid with soil in the box to simulate a site, and a test single pile is buried in the soil in the box. The vertical loading system includes a reaction force frame, a lever , pile driver and weights, the hydraulic loading system includes a water pump, an inlet anti-filter cartridge, an outlet anti-filter cartridge, a force transfer water bag and a counter-pressure plate, the water outlet of the pump is connected to the anti-filter cartridge, and the imported anti-filter cartridge is installed in the model. On the water inlet of the wall of the box, the outlet anti-filter cartridge is installed on the water outlet of the wall of the model box, the top surface of the soil body in the box is laid with a force-transmitting water bag, and a counter-pressure plate is set on the force-transmitting water bag, and the counter-pressure plate is divided into left and right. Some of them are connected to the rotating shaft, and the left and right counter-pressure plates are connected by a screw cap, and the screw cap passes through the test single pile; the data acquisition system includes a displacement meter, which is located on the top of the test single pile, and the displacement meter is connected with the data acquisition instrument. . The invention has good effect, convenient operation, low cost and short time.

Description

technical field [0001] The invention relates to a test device for a vertical static load test of a single pile under the condition of stable confined water, which is mainly applicable to the research on the vertical bearing characteristics of a single pile under the condition of confined water in the indoor vertical static load test, and belongs to the test of pile foundations. technical field. Background technique [0002] With the accelerated development of cities across the country, the scale of buildings has gradually increased, and there are more and more high-rise buildings. For the standing of high-rise buildings, the pile foundation plays an indispensable role, which can transmit the upper load to the foundation. In order to achieve the ideal bearing layer, the length of the pile foundation is continuously increased, and the pile foundation often penetrates into or even passes through the bearing layer. Due to the existence of dynamic water pressure, the vertical b...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing single pile vertical static load test method, such as poor effect, complicated operation, high cost and long cycle, the present invention provides a stable pressure-bearing test method with good effect, convenient operation, low cost and short time. Test device for vertical static load test of single pile under water condition

Images