高速公路拓宽路基沉降分析

佛开高速公路路基拓宽采用直接在原路基两侧拼接技术。原有路基软土地基采用塑料排水板处理，大部分路段地基土已完成固结，即沉降已处于稳定状态，路基拓宽后的新老路基存在差异沉降。现用有限元软件对拼接路基的沉降进行模拟计算与分析，为路基拼接工程的设计提供指导和依据。通过路基沉降计算与分析，拓宽路基采用复合地基处理可以减小新老路基差异沉降，达到路基设计要求。

Highway Broadens Roadbed Settlement Analysis

The roadbed broadens the Fokai express highway adopting to split joint directly in the plain on both side of the roadbed. The original roadbed is soft land base adopt plastic draining off board treatment, most section foundation soil already accomplishes a concretion, namely settlement already is in stable state, the roadbed broadens the settlement there existing difference in the old and new in the roadbed. The present we use finite element method software carries out the analog computation and analysis on montage roadbed settlement, the project design provides direction and the basis to roadbed montage. By the fact that the roadbed subsiding secretly scheming against and analysing,broaden a roadbed adopt compound foundation handling being able to diminish the old and new roadbed difference subsiding, reach roadbed design demand.