钢桥面铺装防水粘结层研究-材料学专业论文.docxVIP

东南大学硕士学位论文 东南大学硕士学位论文 摘要 摘 要 防水粘结层是钢桥面铺装的重要组成部分，合理的防水粘结层设计是钢桥面铺装方 案成功与否的关键。我国现有防水粘结层的理论研究和实践研究尚不完善，造成大量钢 桥面铺装由于防水粘结层而导致破坏，因此从材料试验和力学分析的角度深入研究钢桥 面铺装防水粘结层具有重要的理论意义和实用价值。 本文以润扬长江公路大桥为工程背景，采用有限元方法对铺装层和防水粘结层进行 力学分析。分析在最不利荷载情况下，水平荷载和垂直荷载共同作用下铺装结构的受力 状况，尤其是钢板与防水粘结层间最大剪应力、最大剪应变。分析了防水粘结层的各项 计算参数对铺装层受力的影响，为防水粘结材料的选择和防水粘结层的设计提供理论指 导。 本文通过剪切、拉拔等试验综合比较了美国环氧沥青粘结材料和德国钢桥面铺装环 氧树脂类防水粘结材料，根据润扬长江公路大桥钢桥面铺装方案及相关技术要求，推荐 采用环氧沥青粘结材料。针对环氧沥青防水粘结剂施工中可能出现的一些问题进行了试 验研究，为润扬长江公路大桥的施工提供技术指导。 关键词 润扬长江公路大桥 大跨径钢桥 桥面铺装 防水粘结层 有限元法 第一章绪论ABSTRACT 第一章绪论 ABSTRACT The waterproof and cohesive layer is an important part of steel bridge deck pavement． An appropriate design of waterproof and cohesive layer is the key of getting successful in a steel bridge deck pavement program．But nowadays in China，the theories and practices of waterproof and cohesive layer is on a low level．Many bridge decks have diseases caused by the deterioration of waterproof and cohesive layen So it has great theoretical and practical affection to study and analyze the layer in views of material and load． Basing on Runyang Yangtzi River Bridge，in this paper,the finite element mechanics method is taken to analyze the waterproof and cohesive layer and pavement structure．This dissertation discusses in detail the stress of pavement under critical load，especially the sheer stress and strain between the steel deck and waterproof and cohesive layer,when horizontal and vertical load are taken account．The parameters of waterproof and cohesive layer are changed to get the most critical one．It can give a theoretical guide for design． Epoxy asphalt is compared with a waterproof and cohesive material applied in steel bridge in Germany by using sheer tests and other tests．Acceding to the require of Runyang Yangtzi River Bridge，epoxy asphalt is recomment to be the waterproof and cohesive material of Runyang Yangtzi River Bridge．The problems that may happen in application of epoxy asphah are studied too，which Can guide practice． Keywords Runyang Yangtz