摘要
针对贝雷片连接刚度问题,为研究贝雷片之间节点刚度对贝雷梁整体强度和刚度的影响规律,结合小浪底黄河大桥施工栈道中贝雷梁桁架,采用Ansys中Matrix27模拟了节点,并对整体贝雷梁进行了有限元分析。结果表明:当跨度相同时,随着节点转动刚度的增大,贝雷梁最大位移减小。跨度18 m时,当节点为铰结时,最大位移为13.82 mm;当节点为半刚性时,最大位移为12.49 mm;当节点为刚结时,最大位移为12.28 mm。当跨度相同时,随着节点转动刚度的增大,贝雷梁最大应力减小。当节点为铰结时,最大应力为110.33 MPa;当节点为半刚性时,最大应力为88.52 MPa;当节点为刚结时,最大应力为87.60 MPa。随着跨度的增大,节点刚度不同导致的最大应力之差也随之增大。随着加载力的增大,贝雷梁最大应力也随之增大,节点刚度不同导致的最大应力之差也随之增大。
For the connection stiffness of bailey plate and studying the law of the influence from the joint stiffness among bailey plates on the overall strength and stiffness of bailey beam,the joint is simulated with Matrix27 in Ansys in combination with the bailey truss in the construction catwalk of Xiaolangdi Yellow River Bridge,and then a finite element analysis is made on the whole bailey beam.The result shows that when the spans are the same,the maximum displacement of the bailey beam decreases along with the increase of the joint turning stiffness.When the span is 18 m and the joint is hinged,the maximum displacement is 13.82 mm.When the joint is semi-rigid,the maximum displacement is 12.49 mm.When the joint is a rigid one,the maximum displacement is 12.28 mm.When the spans are the same,the maximum stresses of the bailey beams decrease along with the increases of the joint turning stiffnesses.When the joint is hinged,the maximum stress is 110.33 MPa.When the joint is semi-rigid,the maximum stress is 88.52 MPa.When the joint is a rigid one,the maximum stress is 87.60 MPa.Along with the increase of the span,the difference of the maximum stress caused by different joint stiffness is to be increased.Following with the increase of the loading force,the maximum stress of the bailey beam is also to be increased,while the maximum stress caused by the different joint stiffness is also to be increased.Along with the increase of the loading force,the maximum stress of the bailey beam is to be increased,while the maximum stress caused by different joint stiffness is to be increased as well.
作者
谢晓鹏
杨露
窦国涛
高波
XIE Xiaopeng;YANG Lu;DOU Guotao;GAO Bo(College of Civil Engineering and Architecture,Zhengzhou University of Aeronautics,Zhengzhou 450046,Henan,China;College of Civil Engineering,Henan Institute of Engineering,Zhengzhou 451191,Henan,China;Jiangsu Provincial Transportation Engineering Group Co.,Ltd.,Zhenjiang 212100,Jiangsu,China)
出处
《水利水电技术》
北大核心
2020年第4期10-19,共10页
Water Resources and Hydropower Engineering
基金
河南省科技攻关项目(182102310721)
国家自然科学基金青年基金项目(51708514)。
