辽宁工程技术大学学报（自然科学版）2012，Vol.31Issue(1)：69-72,4.
京石高速公路拓宽沉降控制标准
Threshold of settlement control for widened Jing-Shi embankments
摘要
Abstract
To determine the threshold criterion for the settlement of widened Jing-Shi embankments, a numerical model for the widened embankment under vehicles loads has been developed in this study. The numerical analysis shows that: the variation of transverse gradient between old and new road shoulders increases early with the backfill increases, then decreases late. The maximum transverse gradient variation occurs when the backfill reaches 4~5 m; to warrant the safety of slab-on-grade structure, the maximum transverse gradient variation should be less than 0.45 %. Based on above analysis and experience, the threshold criterion for settlement control in the widened Jing-Shi embankment is presented as follows: the maximum settlement of the central part of old road should be less than 3 cm; the maximum settlement after construction for the widened embankment should be less than 10cm; the maximum transverse gradient variation should be less than 0.45 %.关键词
沉降/横坡改变率/拓宽/控制标准/抛物线/数值分析/路面结构层/车辆荷载Key words
settlement/ transverse gradient change/ widening/ threshold criterion/ parabola/ numerical analysis/pavement layer, vehicles loads分类
交通工程引用本文复制引用
赵全胜,赵冠舒,张春会,王锡朝..京石高速公路拓宽沉降控制标准[J].辽宁工程技术大学学报（自然科学版）,2012,31(1):69-72,4.基金项目
河北省自然基金资助项目(No.E2011208036,No.11215634),河北交通科技重点项目(Y-2009122) （No.E2011208036,No.11215634）
