| CFG-PHC组合式长短桩复合地基试验研究 |
| |
| 引用本文： | 宋建学,李迎乐,周同和.CFG-PHC组合式长短桩复合地基试验研究[J].岩土工程学报,2010(Z2). |
| |
| 作者姓名： | 宋建学 李迎乐 周同和 |
| |
| 作者单位： | 郑州大学土木工程学院;机械工业第六设计研究院;郑州大学综合设计研究院; |
| |
| 摘 要： | 通过3组CFG-PHC组合式长短桩复合地基现场试验,研究复合地基承载力特征值、桩土应力比、应力分布、荷载分担比等性状。试验表明长桩的桩土应力比大于短桩;达到极限承载力后,短桩和长桩的应力比趋于稳定。在达到复合地基承载力特征值时,桩间土承载力发挥最多,长桩次之,短桩最少。建议用发挥度组合法计算组合式长短桩复合地基承载力,且长桩、短桩的承载力发挥度可分别取0.6～0.8、0.2～0.3,认为桩间土强度发挥度β可大于1,并建议取1.4～1.8。
|
| 关 键 词： | 复合地基 组合式长短桩 静载荷试验 桩土应力比 |
Static loading tests on long-short CFG-PHC pile integrated composite foundation |
| |
| SONG Jian-xue,LI Ying-le,ZHOU Tong-he.Static loading tests on long-short CFG-PHC pile integrated composite foundation[J].Chinese Journal of Geotechnical Engineering,2010(Z2). |
| |
| Authors: | SONG Jian-xue LI Ying-le ZHOU Tong-he |
| |
| Affiliation: | SONG Jian-xue1,LI Ying-le1,2,ZHOU Tong-he1 (1.Civil Engineering School,Zhengzhou University,Zhengzhou 450001,China,2.No.6 Institute of Planning & Research of Machinery Industry,Zhengzhou 450007,3.Architecture Design Institute of Zhengzhou University,Zhengzhou 450002,China) |
| |
| Abstract: | On-site static loading tests are carried out on three groups of long-short two-type-pile integrated composite foundations,so as to investigate the single pile working mechanism,the stress ratio between pile and soil,the share of load carrying and so on.It is found that the stress ratio and loading share of long pile are larger than those of short pile.When reaches the characteristic value of composite foundation bearing capacity,the share of soil exerts the larges,then the long pile,and the short pile.Beyon... |
| |
| Keywords: | composite foundation long-short integrated composite foundation static loading test pile-soil stress ratio |
| 本文献已被 CNKI 等数据库收录！ |
|
