锚桩法单桩静载试验中群桩相互作用及误差分析-岩土力学.PDF

第 25 卷第 10 期 岩 土 力 学 Vol.25 No. 10 2004 年 10 月 Rock and Soil Mechanics Oct. 2004 文章编号：1000－7598 －(2004) 10―1613―04 锚桩法单桩静载试验中群桩相互作用及误差分析 1 2 周洪波 ，黄胜生 * （1.同济大学 地下建筑与工程系，上海 200092 ；2. 中国科学院武汉岩土力学研究所, 湖北 武汉 430071 ） 摘 要：利用 Poulos 弹性理论法，对锚桩法单桩静载承载力试验中试桩和锚桩之间的相互作用进行了研究，提出了考虑锚 桩上拔量对试桩p -s 曲线影响的方法。利用该方法对某工程实测资料进行了分析，发现采用原始测试数据分析所得出的试桩 极限承载力偏于危险，并为该工程提供了更加合理的单桩极限承载力值。 关 键 词：锚桩法；弹性理论法；单桩承载力；群桩相互作用 中图分类号：TU 473 文献标识码：A Interaction and error analysis of pile groups in anchor-pile loading test 1 2 ZHOU Hong-bo , HUANG Sheng-sheng * (1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China) Abstract: The interaction between loading pile and anchor-piles in the anchor-pile loading test is studied. A method which based on the Poulos elastic theory to take account of the influences of the interaction on the Ps curves of the loading pile, is presented. Then, the data of a test have been analyzed using this method. The conclusion is that the result from the original data analysis is larger than its actual bearing capacity. Key words: anchor-pile