斜交宽桥设计的新构思  

A New Way For The Design of Broad Skew Bridge

作　　者：金晓思[1] 许明华[2] 

机构地区：[1]同济大学,上海200092 [2]海宁水利勘测设计所,浙江314400

出　　处：《结构工程师》1998年第1期1-6,共6页Structural Engineers

摘　　要：本文介绍了斜交55．76°的宽桥（B＝60m）的平面设计的构思：为了防止斜桥的横向爬行，缩短斜交桥梁的跨径，在满足通航的前提下，在宽畅的桥幅范围内按正交桥布置，两条自由边各设斜交人行道箱梁，其间布置三角板以过渡。论文研究了行车方向与跨径方向不一致铰接板的内力变化，边箱梁的特殊设计，以及三角板极限荷载的计算配筋等。斜交宽桥改变了传统的布置，缩短了机动车道板的计算跨径，降低了建筑高度及显著节省了材料与造价。The method of plane design to the 55. 76°skew bridge is introduced in this paper. To satisfy the condition of the navigation, to prevent the crossway slide and shorten the span of the skew bridge, we use right bridge alongside the width of the bridge, skew pedestrian way box beam for two free side, and triangle plate to connect them. In this Paper, we study the changes of the internal forces of the hinged plate in which the traffic direction does not coincide with the span direction, the special design of the side box beam, and the triangle plate with the limit loading condition for design reinforcement, etc. With the use of the broad skew bridge, the traditional way of the design has been changed,the computinng span of the carriageway plate and the height of structure have ben shortend, and the material used and the construction price have been peally reduced.

关 键 词：斜桥 设计 斜交宽桥 三角板 边箱梁 

分 类 号：U448.412[建筑科学—桥梁与隧道工程]