| 液化地基侧向流动引起的桩基础破坏分析 |
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| 引用本文： | 王睿,张建民,张嘎.液化地基侧向流动引起的桩基础破坏分析[J].岩土力学,2011,32(Z1):501-0506. |
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| 作者姓名： | 王睿 张建民 张嘎 |
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| 作者单位： | 清华大学 水沙科学与水利水电工程国家重点实验室，北京 100084 |
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| 基金项目： | 国家自然科学基金项目(No.51038007);国家自然科学基金项目(No.51079074) |
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| 摘 要： | 20世纪60年代以来，流动地基中的桩基础的震害现象和抗震设计受到了工程师和研究者的广泛关注。对侧向流动地基中桩基础的一些典型震害现象和其可能震害原因的归纳和分析，显示目前研究仍不能完全解释侧向流动地基中桩基础的震害现象。选取新泻地震中昭和大桥桩基础破坏案例采用p-y方法进行计算，分析地基侧向流动引起的桩基础破坏的影响因素。计算结果显示，合理地描述液化砂土的p-y曲线模型在侧向流动地基桩基础分析中起到关键作用。对于侧向流动地基中桩基础的震害机制的进一步理解和抗震设计，有赖于更为合理和有效地液化砂土中的p-y模型的发展。
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| 关 键 词： | 液化 侧向流动 桩基础 p-y曲线 |
| 收稿时间： | 2010-12-14 |
Analysis of failure of piled foundation due to lateral spreading in liquefied soils |
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| WANG Rui,ZHANG Jian-min,ZHANG Ga.Analysis of failure of piled foundation due to lateral spreading in liquefied soils[J].Rock and Soil Mechanics,2011,32(Z1):501-0506. |
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| Authors: | WANG Rui ZHANG Jian-min ZHANG Ga |
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| Institution: | State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Pile foundation failures in lateral spreading ground have attracted the attentions of engineers and researchers since the Niigata and Alaska earthquakes. Study of typical cases of pile failures in lateral spreading ground and analysis of some previously proposed causes of the failures indicate that a mechanism which could completely explain the failures is yet to be found. By analyzing the failure of Showa Bridge during the Niigata earthquake through p-y method, this paper looks into influence factors for the failure of piles due to lateral spreading. Results show that appropriate p-y models for liquefied soil are vital in the analysis of piles in lateral spreading ground; further understanding and better aseismic design of piles in lateral spreading ground depends on the development of effective p-y curve models for liquefied soi |
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| Keywords: | liquefaction lateral spreading pile foundation p-y curve |
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