路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2011年
6期
162-165
,共4页
软土地基%路基加宽%新老路基%沉降变形%数值分析
軟土地基%路基加寬%新老路基%沉降變形%數值分析
연토지기%로기가관%신로로기%침강변형%수치분석
soft foundation%subgrade widening%new and old subgrade%settlement deformation%numerical analysis
针对软土地基上高速公路加宽工程中新老路基的差异沉降问题进行了有限元计算，分析新路基作为附加荷载对老路基和地基的影响。计算结果表明，加宽部分路基的填筑将会使得老路路肩与路基中心间差异沉降的产生，极易导致路基纵向裂缝病害。通过参数变化后的计算与分析，建议采用合适的加宽宽度、路基填料和软基处理等措施，控制和降低加宽部分对原有路基沉降变形的影响。
針對軟土地基上高速公路加寬工程中新老路基的差異沉降問題進行瞭有限元計算，分析新路基作為附加荷載對老路基和地基的影響。計算結果錶明，加寬部分路基的填築將會使得老路路肩與路基中心間差異沉降的產生，極易導緻路基縱嚮裂縫病害。通過參數變化後的計算與分析，建議採用閤適的加寬寬度、路基填料和軟基處理等措施，控製和降低加寬部分對原有路基沉降變形的影響。
침대연토지기상고속공로가관공정중신로로기적차이침강문제진행료유한원계산，분석신로기작위부가하재대로로기화지기적영향。계산결과표명，가관부분로기적전축장회사득로로로견여로기중심간차이침강적산생，겁역도치로기종향렬봉병해。통과삼수변화후적계산여분석，건의채용합괄적가관관도、로기전료화연기처리등조시，공제화강저가관부분대원유로기침강변형적영향。
Against the problem of differential settlement of new and old subgrade in engineering in soft foundation, finite element calculation is carried out to analyze the impact highway widening of new subgrade as an additional load on old subgrade and foundation. The result showed that filling of the widened subgrade will cause differential settlement between the old road shoulder and the center of subgrade, which would easily cause vertical cracks on subgrade. Through calculation and analysis after parameters change, it is recommended to take the measures of widening, subgrade filling and soft foundation treatment to control and reduce the impact of widened section on the settlement of original subgrade.
