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| 某大桥桥台变形原因分析及其地基处理 | |
| 引用本文： | 杜长学,彭振斌,王继华,陈安,何波.某大桥桥台变形原因分析及其地基处理[J].桂林工学院学报,2005,25(4):483-486. |
| 作者姓名： | 杜长学 彭振斌 王继华 陈安 何波 |
| 作者单位： | 1. 中南大学,地学与环境工程学院,长沙,410083;中国有色金属工业长沙勘察设计研究院,长沙,410011 2. 中南大学,地学与环境工程学院,长沙,410083 3. 中国有色金属工业长沙勘察设计研究院,长沙,410011 |
| 摘 要： | 某大桥桥台开裂的根本原因是因为基础直接砌置在岩土组合地基上，其中中粗砂层的强度和变形性能不能满足设计要求，基础产生了差异沉降．改善和提高中粗砂的力学性能是桥台地基处理的关键．因地制宜地选择埋管注浆技术对该层进行加固，其工期短，见效快，变形及时得到了控制；重型圆锥动力触探及旁压试验检测结果显示，注浆处理效果良好． |
| 关 键 词： | 桥台基础 不均匀沉降 注浆 地基处理 检测 |
| 文章编号： | 1006-544X(2005)04-0483-04 |
| 收稿时间： | 2004-11-22 |
| 修稿时间： | 2004年11月22 |
Abutment Deformation Analysis and Foundation Treatment |
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| DU Chang-xue,PENG Zhen-bin,WANG Ji-hua,CHEN An,HE Bo.Abutment Deformation Analysis and Foundation Treatment[J].Journal of Guilin University of Technology,2005,25(4):483-486. | |
| Authors: | DU Chang-xue PENG Zhen-bin WANG Ji-hua CHEN An HE Bo |
| Affiliation: | 1. Department of Geoscience and Environmental Engineering, Central South University, Changsha 410083, China ; 2. China Nonferrous Metals Industry Exploration and Designing Research Institute of Changsha, Changsha 410011, China |
| Abstract: | One abutment deformation is caused by differential settlement of footing. The footing is built on foundation of rock and medium-coarse sand. The targets of mechanical properties of the sand fail to meet the demands of designing. The foundation treatment can improve mechanical properties of the sand. According to the characteristics and causes of this deformation and site condition, the technique of grouting is applied with undertube for sand consolidating . As the time limit of grouting is short, so the deformation is controlled rapidly. From the heavy cone dynamic sounding tests and the pressure tests, grouting treatment is proved to be very efficient. |
| Keywords: | abutment footing differential settlement grouting foundation treatment testing |
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