河南桥台高填方路基变形分析及处治

通过对桥台高填方路段地质勘察及变形监测,针对不均匀深厚杂填土,分析路基和桥台变形原因,参考《公路路基设计规范》中软土路基沉降计算方法,概化计算模型,对比路基沉降估算值与实测值,并针对性地提出处治措施,最终采用路基注浆及加固桥台的处治方案。实践证明深厚杂填土沉降量可采用《公路路基设计规范》中软土路基沉降计算方法进行预估,同时处治方案从根本上解决了路基变形的问题,为类似工程问题提供参考。

Deformation analysis and treatment of high fill subgrade of abutment

Through the geological investigation and deformation monitoring of the high fill section of abutment, the causes of subgrade and abutment deformation are analyzed for uneven heavy miscellaneous fill. Refer to the settlement calculation method of soft soil inthe Specifications for Design of Highway Subgrades, by generalized calculation model, the estimated and measured values of subgrade settlement are compared, and the treatment measures are put forward pertinently. Finally, the treatment plan of subgrade grouting and reinforcement of abutment repair is adopted. The practice proves that the settlement of heave miscellaneous fill can be estimated by the settlement calculation method of soft soil in the Specifications for Design of Highway Subgrades, and the treatment plan fundamentally solves the problem of subgrade deformation, and the reference is provided for similar engineering problems.