摘要
宁波轨道交通1号线某异形基坑采用混凝土支撑+鱼腹梁组合支撑体系,采用数值模拟和实测反馈等方法对预应力鱼腹梁支撑在异形基坑中的适应性进行研究。结果表明:Midas能够模拟鱼腹梁施工中的力学行为,其支撑安装和拆除工效均高于混凝土支撑,通过多次施加预应力能较好地控制围护结构变形,且材料可重复应用,节能环保。
Based on the concrete support and innovative prestressed support （ IPS ） support combination support system engineering practice in special-shape excavation in Ningbo Rail Transit Line 1 , this paper discussed the adaptability of IPS system in special-shape excavation by using of numerical simulation, measurement feedback and other means. The results show that：the IPS system can effectively control the deformation through applying prestress, and can be repeatedly applied on dynamic controlling deformation at the stage of excavation; the installation and removal efficiency of IPS were higher than the concrete support in the project, and its component can be reused.
出处
《施工技术》
CAS
北大核心
2014年第17期7-10,共4页
Construction Technology
关键词
基坑
异形基坑
预应力鱼腹梁支撑
数值模拟
支撑
变形
foundation excavation special-shaped foundation excavation innovative prestressed supports simulation supports deformation
