摘要
通过有限元计算,分析连续式桥梁伸缩缝与搭接钢板上缘接触的填缝料在温度收缩变形和荷载作用下的受力特征。探讨伸缩缝搭接钢板的厚度、宽度、边缘形状等几何尺寸对搭接钢板上缘接触的填缝料以及伸缩缝界面的受力影响。结果表明,与搭接钢板上缘接触的填缝料角点为应力集中点,温度收缩变形比荷载作用对搭接钢板上缘接触的填缝料受力影响更大。推荐优化的钢板几何设计:钢板厚度4 mm,宽度15 cm,边缘形状为圆形,钢板表面与伸缩缝填料脱粘。该研究成果在实际工程中得到很好应用,为国内同等类型的桥梁伸缩缝设计与建设提供参考。
Through the finite element calculation, the force characteristics of continuous bridge expansion joint and lapped steel plate edge contact filler in the temperature shrinkage deformation and load are analyzed. The expansion joint lapped steel plate thickness, width, edge shape geometry on lapped steel edge contact of sealant and a telescopic seam interface stress effect are explored. The results show that angular points of the joint sealant in contact with the gap steel plate surface are the concentration points, and the temperature contraction action has greater influence on the joint sealant in contact with the lapped steel plate surface than the traffic loads action. The optimized steel plate geometry is recommended:steel plate thickness is 4 mm and width is 15 cm, the edge is round shape, and the steel plate surface debonding with expansion joint sealant. The research results are well applied in practical engineering, which may provide references for the design and construction of the same bridge type on expansion joints.
出处
《中国市政工程》
2016年第1期15-18,共4页
China Municipal Engineering
关键词
桥梁工程
伸缩缝钢板
有限元
几何设计
bridge engineering
expansion joints steel plate
finite element
geometric design
