摘要
分析拓宽工程中新老路基沉降差问题产生的原因,采用数值分析不同工况下路基变形的特征,结合变形特征分析常见病害的设计控制模式和可行的控制技术。研究发现,路基综合刚度的不均匀性、结构自重的不均匀性和行车荷载的不均匀性是造成新老路基沉降差问题的主要原因;新老路基变形的形态特征相异,整体呈＂-＂形;拓宽工程中新老路基沉降差异问题的控制损坏模式为老路基层顶面开裂、新路基层地面开裂和新老路基结合部开裂。
The article analyzes the causes of settlement difference of old and new roadbeds in widening project, analyzes the features of roadbed deformations under the different conditions by the numerical values,and analyzes the design control mode and the feasible control technology of common faults by deformation features. The result shows that the nonuniformities overall roadbed rigidity, structure weight and traffic load are the main factors of causing the settlement difference of old and new roadbeds. The deformation morphological characteristics of the old and new roadbeds are different to present '~'on the whole. The control damage mode of the settlement difference of old and new roadbeds in the widening project is the top cracking of old roadbed, the ground cracking of new roadbed, and the cracking at the connection of old and new roadbeds.
出处
《城市道桥与防洪》
2016年第8期43-46,8,共4页
Urban Roads Bridges & Flood Control
关键词
拓宽
新老路基
沉降差
widening
old and new roadbeds
settlement difference
