承压舟浮桥结构强度直接计算研究

摘要

The pontoon bridge which has characteristics of lower cost, shorter construction, better economy and larger traffic flowing capacity has a wide application in un-navigable waters.However, there are no appropriate rules until now.Research on structural strength direct calculation of pontoon bridge is carried out.Five typical calculating cases are defined considering its structure form and actual loading conditions.The influence of transverse bulkhead arrangement and sealing plate at the bottom of the connection bridge on structural strength is discussed.Furthermore, dynamic test on the pontoon bridge is also performed.Calculation cases and calculation methods are validated by comparing the test results with the computational results.%承压舟浮桥以其建造成本低、周期短、经济性好、通行能力强等优点在不通航水域获得了较为广泛的应用,目前为止尚没有专门的技术规范可用.对承压舟浮桥结构强度直接计算进行了研究,根据其结构形式和受力特点,考虑其所承受的极端载况,定义了5种典型计算工况.对横舱壁设置、连接桥底封板对结构强度的影响进行了讨论,还对该承压舟浮桥进行了典型载况的动应力测试,将测试结果与计算结果进行了比较分析,验证了计算工况的合理性和计算过程的可靠性.