空间异形桥塔钢混结合段空间受力分析  

Spatial Force Analysis of the Steel Concrete Composite Section of A Spatial Irregular Bridge Tower

作　　者：陈龙 CHEN Long(School of Civil Engineering,Tianjin University,Tianjin 300051,China;Tianjin Municipal Engineering Design&Research Institute Co.Ltd.,Tianjin 300392,China;Tianjin Infrastructure Durability Enterprise Key Laboratory,Tianjin 300051,China)

机构地区：[1]天津大学建筑工程学院,天津300051 [2]天津市政工程设计研究总院有限公司,天津300392 [3]天津市基础设施耐久性企业重点实验室,天津300051

出　　处：《天津建设科技》2023年第4期41-46,共6页Tianjin Construction Science and Technology

摘　　要：针对斜拉桥桥塔钢混结合段构造受力复杂问题,以如意岛跨海大桥主桥异形桥塔的钢混结合段为研究对象,采用空间有限元方法,建立全桥空间杆系模型进行整体静力分析,确定钢混结合段最不利荷载工况,得到荷载边界条件;再利用Midas/FEA建立三维实体模型,进行受力分析,明确结合段混凝土、钢板及钢绞线的受力情况。分析结果表明:该桥塔钢混结合段构造方式合理,混凝土、钢板及钢绞线的应力水平均较小,结构安全可靠。In response to the complex structural stress problem of the steel-concrete composite section of the cablestayed bridge tower,this article takes the steel-concrete composite section of the irregular bridge tower of the Ruyi Island Cross Sea Bridge as the research object.Using spatial finite element method,a full bridge spatial member system model is established for overall static analysis to determine the most unfavorable load conditions of the steel-concrete composite section,obtain the load boundary conditions,and then use Midas/FEA to establish a three-dimensional solid model for stress analysis,clarify the stress conditions of the concrete,steel plates,and steel strands in the bonding section.The analysis results indicate that the construction method of the steel-concrete composite section of the bridge tower is reasonable,and the stress levels of the concrete,steel plates,and steel strands are relatively low,making the structure safe and reliable.

关 键 词：跨海大桥 异形桥塔 钢混结合段 受力分析 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]