拼宽T梁桥的受力性能研究  

Study on The Mechanical Performance of Widening T-Beam Bridge

作　　者：尚羽[1] 方正 SHANG Yu;FANG Zheng(Guizhou Provincial Transportation Planning,Survey,Design and Research Institute Co.,Ltd.,Guiyang 550080,China)

机构地区：[1]贵州省交通规划勘察设计研究院股份有限公司,贵阳550080

出　　处：《交通科技》2024年第3期101-104,共4页Transportation Science & Technology

摘　　要：文中基于桥梁博士有限元分析软件,以贵州山区拟建的3×30 m连续T梁桥拼宽工程为例,分别建立原桥和拼宽桥的有限元模型,定量分析桥梁拼宽前、后的横向分布系数,以及施工、运营下各梁片的力学响应变化规律。结果表明,紧邻拼宽部位的梁片内力和位移变化为10%~20%,其余梁片内力与位移变化均未超过4%。Based on the bridge doctor finite element analysis software,taking the proposed 30 m+30 m+30 m three-span continuous T-beam bridge in the mountainous area of Guizhou province as an example,the finite element models of the original bridge and the widening bridge are established respectively,and the transverse distribution coefficient before and after the bridge is quantitatively analyzed,and the mechanical response change law of each beam under construction and operation is quantitatively analyzed.The results show that the internal force and displacement of the beam adjacent to the widened section vary by 10%to 20%,and the internal force and displacement change of the rest of the beam are not more than 4%.

关 键 词：改扩建工程 桥梁拼宽 横向分布系数 受力性能 

分 类 号：U448[建筑科学—桥梁与隧道工程]