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| 塑料套管混凝土桩挤土效应现场试验 | |
| 引用本文： | 陈永辉,陈龙,王新泉,齐昌广.塑料套管混凝土桩挤土效应现场试验[J].西北地震学报,2011,33(Z1). |
| 作者姓名： | 陈永辉 陈龙 王新泉 齐昌广 |
| 作者单位： | 1. 河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098;河海大学岩土工程科学研究所,江苏南京210098 2. 河海大学岩土工程科学研究所,江苏南京,210098 3. 浙江大学城市学院土木工程系,浙江杭州,310015 |
| 摘 要： | 结合申嘉湖杭高速公路练杭段加固软土地基工程开展了塑料套管混凝土桩挤土效应的现场试验研究。设地表观测点观测桩打设过程中桩周土体隆起情况;采用绑定仪器的方形木桩等效模拟塑料套管混凝土桩研究不同时刻桩侧挤土压力和孔隙水压力的变化。结果表明打桩过程中在距桩中心约2.2倍沉管外径处地面隆起量最大,约为沉管外径的17.2%;打设完成第一根相邻桩(距离1.6 m)桩侧土压力及孔隙水压力增大10%～20%,其后随着打设桩距木桩距离的渐远,两次打桩后的土压曲线和孔压曲线变化不大,仅在下部桩端处变化较大;场地内桩打设完毕后,沉桩引起的超孔隙水压力逐步消散。根据实测数据建议塑料套管环刚度控制在8～16级。 |
| 关 键 词： | 塑料套管混凝土桩 挤土效应 现场试验 桩侧土压力 孔隙水压力 |
Field Test on Compacting Effect of Plastic Tube Cast-in-place Concrete Pile |
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| CHEN Yong-hui,CHEN Long,WANG Xin-quan,QI Chang-guang.Field Test on Compacting Effect of Plastic Tube Cast-in-place Concrete Pile[J].Northwestern Seismological Journal,2011,33(Z1). | |
| Authors: | CHEN Yong-hui CHEN Long WANG Xin-quan QI Chang-guang |
| Institution: | CHEN Yong-hui 1,2,CHEN Long 2,WANG Xin-quan 3,QI Chang-guang 2(1.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing 210098,China,2.Research Institute of Geotechnical Engineering,3.Department of Civil Engineering,City College,Zhejiang University,Hangzhou 310015,China.) |
| Abstract: | Based on the practical strengthening soft soil foundation engineering in the Shanghai-Jiaxin-Huzhou-Hangzhou expressway of Lian-Hang section,the field test on compaction effect caused by piling plastic tube cast-in-place concrete pile was carried out.Some observation points were set on the surface to study the uplift of soil around the pile when driving pile. In order to facilitate the arrangement of instruments,the timber pile was used to simulate the plastic tube cast-in-place concrete pile equivalently,u... |
| Keywords: | Plastic tube cast-in-place pile Compaction effect Field test Lateral earth pressure Pore water pressure |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |