摘要
分析了市政道路加宽工程地基沉降的控制特点,确定了支承体系相对刚度和最大地面沉降与抗突安全系数的关系。根据马尔科夫模型结构图和状态空间,计算了相对误差转移概率,获取了概率矩阵,确定了敏感数据范围和地下底板防水施工组织工序,完成了地基沉降控制。通过分析工程实例可知,基于马尔科夫模型的地基沉降控制方法,越接近道路中心地基基底压力越稳定,且沉降控制精准度较高。
This paper puts forward the research on foundation settlement control method of urban road widening engineering.Based on the analysis of the characteristics of foundation settlement in urban road widening engineering,the relationship between the relative stiffness of the supporting system and the maximum ground settlement,and between the maximum surface settlement and the safety factor against outburst are determined.According to the structural diagram and state space by Markov model,the transfer probability of relative error is calculated,the probability matrix is obtained,the sensitive data range is determined and the organization process of waterproof construction of underground floor is set to finish the foundation settlement control.According to the experimental results,the closer the center of the line is,the more stable the base pressure is.The control accuracy of settlement is higher.The results provide foundation for the safety of urban municipal road widening projects.
作者
杨斌
Yang Bin(Tunnel Engineering Co.,Ltd.of China Railway 18th Bureau Group,Chongqing 400100,China)
出处
《市政技术》
2021年第3期17-20,共4页
Journal of Municipal Technology
关键词
市政道路
加宽工程
地基沉降
马尔科夫模型
敏感数据
urban municipal road
widening project
foundation settlement
Markov model
sensitive data
