深圳预应力高强混凝土管桩极限承载力试验研究

Test on Limit Bearing Capacity of Prestressed High Strength Concrete Pipepiles Foundation

目前广泛使用的预应力高强混凝土管桩的承载能力未能得到充分利用的原因是缺乏对其深入的研究 ,采用静载和高应变 (PDA)方法对管桩竖向抗压极限承载力进行了大量的检测试验 ,经综合理论分析 ,提出了主要土层的承载力指标 ,使管桩可利用的承载力比目前提高 2 0 %以上 。

The bearing capacity of the widely-used high-strength prestressed precast concrete pipe-pile is not optimized due to the lack of test and research for it.With the static load test and PDA, limited bearing capacity is got and the major factors are put forward,which can increase the bearing capacity of pipe-pile by more than 20% and widely decrease the cost of construction.