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| 桩-网复合地基承载性状现场试验研究 | |
| 引用本文： | 连峰,龚晓南,崔诗才,刘吉福.桩-网复合地基承载性状现场试验研究[J].岩土力学,2009,30(4):1057-1062. |
| 作者姓名： | 连峰 龚晓南 崔诗才 刘吉福 |
| 作者单位： | 1. 浙江大学,建工学院,杭州,310027;山东省建筑科学研究院,济南,250014 2. 浙江大学,建工学院,杭州,310027 3. 聊城大学,建工学院,山东,聊城,252000 4. 广东省航盛工程有限公司,岩土分公司,广州,510230 |
| 摘 要： | 桩-网复合地基是一种软弱地基处理方法，它能通过变形协调，充分发挥桩、网、土的各自作用，有效地控制工后沉降或差异沉降。为了解路堤荷载下桩-网复合地基工作机制，深入分析其沉降变形、荷载传递、桩土应力比和网的受力等性状，接桩体种类设计了两个试验区进行对比分析，研究成果表明，桩网复合地基可以有效减少沉降量；土工格栅的荷载传递能力强于土拱；土工格栅的最大应变出现在桩帽边缘，仅为1 %，最小应变则出现在桩间。试验结果为桩网复合地基理论研究和优化设计提供了依据。 |
| 关 键 词： | 地基处理 路堤荷载 桩-网复合地基 承载性状 |
| 收稿时间： | 2007-10-11 |
Field study of bearing behavior of pile-net composite foundation |
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| LIAN Feng,GONG Xiao-nan,CUI Shi-cai,LIU Ji-fu.Field study of bearing behavior of pile-net composite foundation[J].Rock and Soil Mechanics,2009,30(4):1057-1062. | |
| Authors: | LIAN Feng GONG Xiao-nan CUI Shi-cai LIU Ji-fu |
| Institution: | 1. College of Civil Engineering, Zhejiang University, Hangzhou 310027, China; 2. Shandong Provincial Academy of Building Research, Jinan 250014, China; 3. College of Civil Engineering, Liaocheng University, Liaocheng, 252000, China; 4. Geotechnical Branch of Hangsheng Co. Ltd. of Guangdong Province , Guangzhou 510230, China |
| Abstract: | Pile-net composite foundation is a new kind of soft soil treatment method developed in recent years. Through the deformation compatibleness, the respective effects of pile, soil and net are initiated to control the residual settlement or differential settlement. According to the kind of pile, two experimental section are designed to make comparison to investigate the working mechanism of pile-net composite foundation under embankment loads, and analyze its settlement, load transfer, pile-soil stress ratio and internal force of net etc. The results show that: the pile-net composite foundation could reduce the settlement effectively; the load transfer ability of geogrid is better than that of soil arch; the maximum strain of geogrid, which occurs at the edge of pile cap, is just 1 %, the minimum strain occurs at the midst of two piles. The results provide the basis for the theoretical research and optimum design of pile-net composite foundation. |
| Keywords: | foundation treatment embankment loads pile-net composite foundation bearing behavior |
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