| 青岛凯悦中心格栅式MC桩支护及变形分析 |
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| 引用本文： | 王方旗,亓发庆,姚菁.青岛凯悦中心格栅式MC桩支护及变形分析[J].施工技术,2009,38(9). |
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| 作者姓名： | 王方旗 亓发庆 姚菁 |
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| 作者单位： | 国家海洋局第一海洋研究所,山东,青岛,266061 |
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| 摘 要： | 将水泥土重力式挡墙支护模型与双排桩支护模型结合起来,组成格栅式MC桩组合支护、止水体系,成功应用于青岛凯悦中心深基坑工程.应用平面有限元法模拟基坑开挖过程计算出各工况的变形值,与基坑实测变形进行对比分析;并运用不等时距曲线反映了基坑变形趋势,探讨了每道工况支护结构的内力调整过程,分析了支护结构的变形性状.结果表明该支护体系能增加整体稳定性,更好地控制基坑变形;另外提出"护脚台"的概念,可有效限制支护桩侧向滑移、克服"吊脚桩"现象.
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| 关 键 词： | 基坑支护 格栅式MC桩 护脚台 变形 不等时距 |
Support Technology and Deformation Analysis of Grid-MC-pile in Qingdao Capland Center |
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| Wang Fangqi,Qi Faqing,Yao Jing.Support Technology and Deformation Analysis of Grid-MC-pile in Qingdao Capland Center[J].Construction Technology,2009,38(9). |
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| Authors: | Wang Fangqi Qi Faqing Yao Jing |
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| Affiliation: | The First Institute of Oceanography;SOA;Qingdao;Shandong 266061;China |
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| Abstract: | Grid-MC-pile composite support and water stop system is successfully applied in deep foundation excavation of Qingdao Capland Center,which is combined of cement-soil gravity wall and double-row-pile.And plane finite element method is used to simulate excavation process and calculate the corresponding deformations.Furthermore the calculated deformations are comparatively analyzed with the measured ones.The use of varying time-distance curve reflects the deformation trend of supporting structure.With this,the... |
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| Keywords: | foundation excavation support grid-MC-pile supporting foot step deformation varying time-distance |
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