摘要
分析了盾构隧道地表沉降的构成及其机理,指出影响地表沉降的诸多因素都是不确定的,具有随机性.因此,基于著名的Peck公式,推导了地表最大沉降的平均值及标准差,并利用中心点法计算了地表沉降的可靠指标和失效概率,最后以实例说明.所提出方法为盾构施工地表沉降的可靠性分析提供了一种新的途经.
This paper analyzes composing of ground settlement and their mechanism, and suggests that many reasons of ground settlement are complicated and random. Based on the Peck formula the paper deduces mean value and standard deviation, and calculates reliability index and defect probability of ground settlement by means of center point method. Finally the method is illuminated by an example. The present method will provides a new path for reliability analysis of ground settlement with shield tunnel.
出处
《北方交通大学学报》
CSCD
北大核心
2004年第4期30-33,共4页
Journal of Northern Jiaotong University
关键词
土木建筑工程施工
盾构隧道
地表沉降
PECK公式
可靠性
civil engineering and architecture construction
shield tunnel
ground settlement
peck formula
reliability
