Test device of single-pile vertical static test under stable pressure bearing water condition

Abstract

Disclosed is a test device of a single-pile vertical static test under the stable pressure bearing water condition. In-box soil in a simulation site is laid in a model box, a test single pile is embedded in the in-box soil, a vertical loading system comprises a reaction frame, a lever, a pile pressing device and weights, a water pressure loading system comprises a water pump, an inlet inverse filtering core cylinder, an outlet inverse filtering core cylinder, a force transmission water bag and a back pressure plate, a water outlet of the water pump is connected with the inverse filtering core cylinder, the inlet inverse filtering core cylinder is mounted on a water inlet in the wall face of the model box, the outlet inverse filtering core cylinder is mounted on a water outlet of the wall face of the model box, the force transmission water bag is laid on the top face of the in-box soil, the back pressure plate is arranged on the force transmission water bag, and comprises a left portion and a right portion, the left portion and the right portion are both connected with a rotating shaft, the left portion and the right portion of the back pressure plate are connected through a rotating cover, and the rotating cover penetrates a test single pile. A data collection system comprises a displacement meter, the displacement meter is located on the top of the test single pile, the displacement meter is connected with a data collection instrument, and the device is good in effect, convenient to operate, low in cost and short in time.

Description

technical field [0001] The invention relates to a testing device for a vertical static load test of a single pile under a stable confined water condition, which is mainly applicable to the research on the vertical bearing characteristics of a single pile under the confined water condition in an indoor vertical static load test, and belongs to the pile foundation test technology field. Background technique [0002] With the accelerated development of cities across the country, the scale of buildings is gradually increasing, and there are more and more high-rise buildings. For the erection of high-rise buildings, the pile foundation plays an indispensable role, and it can transfer 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 goes deep into or even passes through the bearing layer. Due to the existence of hydrodynamic pressure, the vertical bearing capa...

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