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| 基于统一强度理论的小桩注浆压力解析 | |
| 引用本文： | 童怀峰,张浩华,郭院成.基于统一强度理论的小桩注浆压力解析[J].河南科技大学学报(自然科学版),2011,32(4):45-48,110. |
| 作者姓名： | 童怀峰 张浩华 郭院成 |
| 作者单位： | 1. 洛阳理工学院土木工程系,河南洛阳,471023 2. 武汉理工大学土木工程与建筑学院,湖北武汉430070;郑州市市政工程管理处,河南郑州450053 3. 郑州大学土木工程学院,河南郑州,450002 |
| 基金项目： | 河南省基础与前沿技术研究计划项目(102300410171) |
| 摘 要： | 基于柱形孔扩张弹性理论和统一强度理论,对无砂砼小桩注浆时注浆压力与桩周土体的应力状态进行了分析,得出了考虑中主应力影响下,桩周土体处于弹性极限状态和弹塑性状态时,注浆压力公式以及注浆压力与塑性开展半径的关系式。当桩周土体处于不同应力状态时,对土体的注浆开裂与挤密之间的相关关系,以及中主应力权系数b取不同值时注浆压力p与塑性开展半径rc的关系进行了分析,其结果对无砂砼小桩后处理技术注浆优化设计提供了分析手段和途径。 |
| 关 键 词： | 统一强度理论 无砂砼小桩 注浆压力 应力状态 |
Resolution of Grouting Pressure on Small Non-sand Concrete Pile Based on Unified Strength Theory |
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| TONG Huai-Feng,ZHANG Hao-Hua,GUO Yuan-Cheng.Resolution of Grouting Pressure on Small Non-sand Concrete Pile Based on Unified Strength Theory[J].Journal of Henan University of Science & Technology:Natural Science,2011,32(4):45-48,110. | |
| Authors: | TONG Huai-Feng ZHANG Hao-Hua GUO Yuan-Cheng |
| Institution: | TONG Huai-Feng1,ZHANG Hao-Hua2,3,GUO Yuan-Cheng4(1.School of Civil Engineering,Luoyang Institute of Science & Technology,Luoyang 471023,China,2.School of Engineering & Architecture,Wuhan University of Technology,Wuhan 430070,3.Zhengzhou Municipal Engineering Administration,Zhengzhou 450053,4.School of Civil Engineering,Zhengzhou University,Zhengzhou 450002,China) |
| Abstract: | Based on the expansion elastic theory of cylindrical cavity and the twin shear unified strength theory,the stress state of soil around the pile and grouting pressure of small non-sand concrete pile were analyzed.The grouting pressure formula and the relationship between the grouting pressure and the plastic radius were obtained when the soil around the pile was in the elastic limit state and elastic-plastic state under the influence of intermediate principal stress.When the soil around the pile was in diffe... |
| Keywords: | Unified strength theory Small non-sand concrete pile Grouting stress Stress state |
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