不同类型填方路基沉降监测及沉降分析  

Monitoring and analysis of different types of fill roadbed settlements

作　　者：王金明[1] 陈昌彦[1,2] 张建坤 谭雪[1] Wang Jinming;Chen Changyan;Zhang Jiankun;Tan Xue(BIG Engineering Consultant Ltd.,Beijing 100038,China;Beijing Engineering Research Center for Ground Defects Associated with Roads and Municipal Pipelines,Beijing 100038,China)

机构地区：[1]北京市勘察设计研究院有限公司,北京100038 [2]北京市道路与市政管线地下病害工程技术研究中心,北京100038

出　　处：《工程勘察》2019年第1期61-64,73,共5页Geotechnical Investigation & Surveying

摘　　要：填方路堤的沉降变形和稳定是高填方公路建设的重要工程问题,沉降变形控制将是填方公路施工期、施工期后以及路基处理的重要控制指标。本文主要阐述某高填方路基工程的沉降监测方法及沉降分析,选取碎石挤压路基、天然路基、复合路基等不同类型的高填方路基进行详细的分析比较,分析高填方路基不同时期的沉降规律,对比分析不同路基的沉降关系,论述证明了对桥头地基进行加固处理的设计方案明显改善了路基的沉降,碎石挤压路基在施工前期能有效地减缓路基沉降的发生等规律。Settlement deformation and stability of fill embankment is an important engineering problem for high fill highway construction. Controlling settlement is an important index during filling highway construction period, post construction period and roadbed treatment. This paper mainly expounds the settlement monitoring and analysis method of a high fill subgrade project. The different types of high fill subgrade such as crushed stone extruding subgrade, natural roadbed and compound subgrade are selected for detailed analysis and comparison. The settlement rules of high fill subgrade in different periods are analyzed, and the settlement relationship of different roadbeds is compared and analyzed. It is proved that the design plan for reinforcing the bridge head foundation obviously reduces the settlement of the roadbed and the rule of using crushed stone to crush the roadbed, which can effectively mitigate the occurrence of subgrade settlement in the early stage of construction.

关 键 词：沉降观测 高填方 不同路基 差异沉降 

分 类 号：TU196[建筑科学—建筑理论]