| 柔性承台下复合地基应力和沉降计算研究 |
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| 引用本文： | 张忠苗,陈洪,吴慧明.柔性承台下复合地基应力和沉降计算研究[J].岩土力学,2004,25(3):451-454. |
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| 作者姓名： | 张忠苗 陈洪 吴慧明 |
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| 作者单位： | 1. 浙江大学 岩土工程研究所， 浙江 杭州 310027；2. 宁波大学 土木工程系， 浙江 宁波 315000 |
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| 摘 要： | 柔性承台下复合地基的受力性状与刚性承台下复合地基有很大差别，常用的复合地基应力和沉降计算理论均基于刚性承台下复合地基，使计算值与实际值相差较大。利用Mindlin解与Boussinesq解联合求解柔性承台下复合地基的附加应力，可以得到与实际较符合的应力分布。利用Vesic小孔扩张理论计算桩体刺入柔性承台的量，并对分层总和法求得的沉降进行修正，可以得到与实测接近的沉降计算值。
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| 关 键 词： | 柔性承台 刚性承台 复合地基沉降 Mindlin解 Boussinesq解 Vesic小孔扩张理论 |
| 文章编号： | 1000-7598-(2004)03-0451-04 |
| 收稿时间： | 2002-12-23 |
| 修稿时间： | 2002年12月23 |
Research on stress and settlement of composite ground with soft base slab |
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| ZHANG Zhong-miao,CHEN Hong,WU Hui-ming.Research on stress and settlement of composite ground with soft base slab[J].Rock and Soil Mechanics,2004,25(3):451-454. |
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| Authors: | ZHANG Zhong-miao CHEN Hong WU Hui-ming |
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| Institution: | 1. Research Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China； 2. Department of Civil Engineering, Ningbo University, Ningbo 315000, China |
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| Abstract: | The stress distributions in soil under composite foundation with soft base slab and stiff base slab are very different .The methods of stress and settlement used frequently are based on the composite foundation with stiff base slab. The results of these methods are not fit with the actual. Using Mindlin solution and Boussinesq solution, the additional stress and settlement are acquired. Using Vesic theory, the earth-arc effect on pile top are acquired. Compared with the test results, the stress and settlement are best agreement with it. |
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| Keywords: | soft base slab stiff base slab settlement of composite ground Mindlin solution Boussinesq solution Vesic theory |
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