沪宁城际客专路基沉降观测技术

Settlement Observation Techniques for Shanghai-Nanjing Intercity Roadbed

根据沪宁客专路基设计文件要求,结合施工实践,给出了江南地区软土路基沉降观测的布设方案和测量技术要求,阐述了沪宁客专路基沉降观测方法、精度和测量频度。根据测量结果进行沉降推算,以确定最终沉降值,并利用曲线回归法建立沉降与时间的关系曲线,为类似客专路基工程沉降观测提供了一种有效的观测和评价方法。

In this paper,according to the Shanghai-Nanjing-off special roadbed design documentation requirements,combined with the construction practice,the author summarizes the laid programs of soft-soil roadbed settlement observation and the technical requirements of measurement in Jiangnan area.The paper also illustrates the required observation content and the reasonable layout of observation section to determine the observation frequency.Furthermore,the methods of estimation of settlement are presented based on measurement findings to determine the final settlement value and to establish the relationship between settlement and time by using curve regression method.These observation and evaluation methods are also effective for a similar settlement observation in roadbed Engineering.