| 引用本文: | 赵春风,李尚飞,张志勇,金政,鲁嘉.高应变测试法中弹限取值的研究及工程应用[J].哈尔滨工业大学学报,2011,43(2):119.DOI:10.11918/j.issn.0367-6234.2011.02.024 |
| ZHAO Chun-feng,LI Shang-fei,ZHANG Zhi-yong,JIN Zheng,LU Jia.Study and engineering application of quake in high-stain dynamic test[J].Journal of Harbin Institute of Technology,2011,43(2):119.DOI:10.11918/j.issn.0367-6234.2011.02.024 |
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| 摘要: |
| 为了掌握高应变动力测试单桩极限承载力中波形拟合法的应用,对波形拟合法中桩土模型参数弹限的取值进行研究.通过某地区现场动、静力试验,获得了桩侧土摩阻力和桩土相对位移数据,并对数据进行回归分析.结果表明,用双曲线拟合桩土间摩阻力与桩土间的相对位移关系是合适的,在此基础上,提出分层取弹限的方法,用此方法获得的弹限值应用在实际工程测试计算中,有效提高了高应变测试单桩极限承载力的精度. |
| 关键词: 高应变动力测试法 单桩极限承载力 弹限 波形拟合法 |
| DOI：10.11918/j.issn.0367-6234.2011.02.024 |
| 分类号:TU473.16 |
| 基金项目:上海市重点学科建设资助项目(B308) |
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| Study and engineering application of quake in high-stain dynamic test |
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ZHAO Chun-feng1,2, LI Shang-fei1,2, ZHANG Zhi-yong3, JIN Zheng4, LU Jia1,2
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1.Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education,Tongji University,200092 Shanghai, China;2.Department of Geotechnical Engineering,Tongji University,200092 Shanghai,China;3.Shanghai Urban Construction Group Co.,200122 Shanghai,China;4.Shanghai Jingruis Corporration Limited,200041 Shanghai,China)
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| Abstract: |
| In order to study application of waveform fitting method of high strain dynamic testing methods in testing vertical bearing capacity of single-egress analysising of the data of pile shaft resistance and corresponding pile-soil relative displacement.The analysis indicates that hyperbola can fit the relation of pile shaft resistance and the corresponding pile-soil relative displacement well.So a new method to gaining quake limit for stratified soil is designed.Applying the method to actual engineering,and achieved more reasonable results. |
| Key words: high strain dynamic testing method ultimate bearing capacity of a single pile quake waveform fitting method |
