摘要
为研究波形钢腹板和混凝土顶板结合段处一种新型混合连接件的力学特性和破坏机理,利用有限元软件ANSYS建立钢-混结合段的连接件局部模型,并与目前常用的PBL(Peffobond Lsiste)连接件对比.首先在MIDAS/CIVIL中建立某波形钢腹板PC箱梁连续梁桥全桥模型,通过计算得到最不利荷载组合下箱梁所受最大剪力.其次,将这一剪力转化为单位面积剪应力,施加在ANSYS局部模型上,分别计算两种连接件各组成部分的应力及变形情况.通过分析,新型连接件在满足结构刚度和抗剪要求的前提下,结合了嵌入型连接件和翼缘型连接件各自的优点,更加节省用钢量,便于施工,降低了工程造价.
To study the mechanical properties and failure mechanism of a new hybrid connector located in the joint section of corrugated steel webs and concrete roof,based on a PC continuous box-girder bridge with corrugated steel webs,a finite elements model of this connector is built by ANSYS,and compared with the PBL connector widely used currently.Firstly,the model of a PC continuous box-girder bridge with corrugated steel webs bridge is built by MIDAS/CIVIL to calculate the maximal shear force of the box girder under the most unfavorable load combinations.Secondly,the maximal shear force is converted into shearing stress per unit area,and applied to the local model in ANSYS to calculate the stress and transformation of each member.The analytical results show that the new hybrid connectors have advantages of both the embedded connectors and the flange connectors;the amounts of steels of new hybrid connectors are much less on the premise of stiffness and shear resistance;moreover,it is more convenient to construction.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2015年第4期533-537,共5页
Engineering Journal of Wuhan University
基金
湖北省交通运输厅重点科研项目(编号:鄂交科教(2012)857(二)12)
关键词
组合箱梁
波形钢腹板
钢混结合段
连接件
用钢量
composite box girder
steel-concrete composite segment
connector
amount of steels
