摘要
挤密砂桩复合地基的挤密效应很难确定,工后沉降的预测也是难题。通过实测资料,采用复合形法的正反分析法,对越南高速公路挤密砂桩复合地基的挤密砂桩等效多参数进行了反演,并利用反演结果对工后沉降进行了预测,预测结果与实际情况基本一致.并通过实测的桩土应力比,提出了反算挤密砂桩的挤密效应系数的方法,为进一步改善挤密砂桩施工控制效果提供了参考,研究成果有效指导了实际施工,可以为其他工程做参考。
It is quite difficult to ascertain the compaction effect of sand compaction pile composite foundation. The prediction about post construction settlement is also a problem. Through the measured da- ta and using positive and negative analysis method of composite method ,we make the inversion for equiva- lent multi-parameter of sand compaction pile from the sand compaction pile composite foundation of Viet- nam highway in this paper. And according to the result of inversion, we predict the post construction set- tlement which is basically consistent with actual situation. Then we can analyze the compaction effect of sand compaction pile through the measured stress ration between piles and soil. The result of this research effectively guides the actual construction, which is able to be the reference for other projects.
作者
徐科
沈才华
胡玉田
许修亮
XU Ke SHEN Caihua HU Yutian XU Xiuliang(Guangdong Provincial ChangDa Highway Engineering Co. , Ltd, Guangzhou, Guangdong 511431, China College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu 210098, China)
出处
《公路工程》
北大核心
2017年第1期240-243,共4页
Highway Engineering
基金
广东省交通厅科技项目(201302023)
关键词
挤密砂桩
复合形法
反分析
工后沉降
sand compaction pile
composite method
inverse analysis
post construction settle-ment
