预制小桩径桩单桩承载力探析

分析了预制桩静载试验实测资料,发现桩侧摩阻力和桩端阻力在试验过程中发挥了作用,说明沉桩施工对桩周土和桩端土层的挤密作用,提高了单桩承载力。建议小桩径桩,根据现场静载试验确定单桩竖向承载力作为设计取值的依据,以充分发挥单桩承载力,降低基础造价,提高经济效益。

An Analysis Bearing Value on a Prefabricated Pile with Small Diameter

The paper analyzes the testing data in load examinati on on the prefabricated piles. It is shown that the friction force on the side and the end of the pile exerts the effects. The examples o f construction show that the compactive effect of the surrounding and underlying soils due to the construction of pile foundation enhances th e pile-bearing capacity. The author proposes to use small-diameter-pile to enhance the pile-bearing capacity , to lower the cost of foundation and to increase economic benefit in accordance with the pile vertical bearing capacity determined by the pile static load test.