摘要
通过对某工程预应力管桩单桩竖向抗压静载荷试验结果的分析研究,指出沉桩时的挤土效应、桩的卸压回弹、桩端持力层软化、桩周土体重新固结程度不足等因素,都有可能导致桩在试验时发生异常沉降现象,并总结了设计和施工中应注意的问题及应采取的预防措施。
Based on the results analysis of single pile vertical compression static load test for a project of prestressed concrete pipe pile, it shows that the factors of compaction effect when sinking piles, rebound when pile unload, supporting layer softening at tip of pile, soil consolidation degree insufficient around pile and so on all can lead to the pile abnormal sediment during test. The problems to be noticed and preventive measures to be taken during design and construction are summarized.
出处
《工程质量》
2011年第4期72-76,共5页
Construction Quality
关键词
预应力管桩
静载荷试验
分析研究
异常沉降
prestressed concrete pipe pile
static load test
analysis
abnormal settlement
