东南大学学报（自然科学版）2017，Vol.47Issue(2)：397-403,7.DOI:10.3969/j.issn.1001-0505.2017.02.032
在役高速公路软基不均匀沉降病害注浆处治技术
Grouting reinforcement technology for soft ground differential settlement disease of in-service highway
摘要
Abstract
To solve the problem of the differential settlement at the roadbed-bridge transition section of Jiangsu coastal in-service highway,a lateral radiation grouting treatment technology was proposed.Based on the grouting treatment engineering of Lianyungang-Yancheng highway from mileage K20 + 084 to K20 + 144,the construction technology,the monitoring and testing methods,and the grouting parameters of the lateral radiation grouting method were studied,and the numerical analysis model of grouting reinforcement for soft ground of in-service highway was established.The grouting reinforcement effects and the deformation performances of the soft ground under the existing embankment were also analyzed and evaluated.The rationality of the proposed analysis method was verified by the field measured data of ground deformation.The results show that the post-construction settlement of the existing embankment after reinforcement by the lateral radiation grouting method reduces by 90 mm,and the maximum lateral displacement of the ground soil reduces by 17.2 mm.Therefore,the differential settlement disease can be effectively controlled.In practical engineering,the rational grouting parameters,such as the grouting ratio,the grouting depth,and so on,should be selected according to the embankment fill height and the engineering geological conditions to achieve the best reinforcement effect.关键词
在役高速公路/不均匀沉降/注浆/施工技术/数值分析/加固效果Key words
in-service highway/differential deformation/grouting/construction technology/numerical analysis/reinforcement effect分类
建筑与水利引用本文复制引用
王安辉,丁选明,章定文..在役高速公路软基不均匀沉降病害注浆处治技术[J].东南大学学报（自然科学版）,2017,47(2):397-403,7.基金项目
国家自然科学基金资助项目(51420105013)、中央高校基本科研业务费专项资金资助项目(2242014R30020)、江苏省高校“青蓝工程”优秀青年骨干教师培养对象资助项目. （51420105013）
