摘要
基于Midas-FEA有限元软件分析,对公路桥梁中双壁钢吊箱围堰结构进行了模拟。结果表明:双壁钢吊箱围堰结构中变形最严重的区域位于围堰中部的内支撑区域,该处的变形达到26.36 mm;双臂钢吊箱围堰构件中侧板、底板、内支撑、围梁、底部龙骨、封底吊挂、拉压杆和围堰限位的最大变形处于内支撑区域;通过Von-Mises准则和Tresca准则计算得到的侧板结构承受的最大应力都高于底板结构;双臂钢吊箱围堰构件中侧板、底板、内支撑、围梁、底部龙骨、封底吊挂、拉压杆、围堰限位和隔舱板的组合应力最大的位置在围堰限位区域,最大应力为89.26 MPa。双臂钢吊箱围堰构件施工中可以对内支撑和底龙骨等区域进行局部加强。
Midas-FEA software is used to simulate the double wall steel box cofferdam structure of highway bridge.The results show that the most serious deformation area of the double wall steel boxed cofferdam is located in the inner support area in the middle of the cofferdam,where the deformation reaches 26.36mm;the maximum deformation of the side plate,bottom plate,inner support,girt,bottom keel,bottom cover hanging,tension bar and weir limit of the double arm steel boxed cofferdam is located in the inner support area;the side deformation calculated by Von-Mises criterion and Tresca criterion is located in the inner support area.The maximum stress of the slab structure is higher than that of the slab structure;the maximum combined stress of the side plate,bottom plate,inner support,girt,bottom keel,bottom sealing hanging,tension and compression bar,cofferdam limit and compartment plate in the cofferdam limit area is 89.26MPa.In the construction of double arm steel box cofferdam components,the internal support,bottom keel and other areas can be strengthened locally.
作者
邓海
许宏伟
李勇
DENG Hai;XU Hongwei;LI Yong(Key Laboratory of Road and Railway Engineering Safety Guarantee of Ministry of Education,Shijiazhuang Railway University,Shijiazhuang,Hebei 050043,China;School of Civil Engineering,Shijiazhuang Railway University,Shijiazhuang,Hebei 050043,China)
出处
《公路工程》
北大核心
2020年第6期138-142,160,共6页
Highway Engineering
基金
河北省高等学校科学技术研究项目(BJ2018048)。
关键词
双壁钢吊箱围堰
有限元分析
变形
应力
double wall steel cofferdam
finite element analysis
deformation
stress
