钢-混凝土组合梁桥桥面铺装的温度应力分析-结构工程专业论文.docxVIP

河北工业大学硕士学位论文 河北工业大学硕士学位论文 钢- 钢-混凝土组合梁桥桥面铺装的温度应力分析 钢-混凝土组合梁桥桥面铺装的温度应力分析 摘 要 根据气象台所记录的气象数据可知：张家口市的年平均气温 7.5℃，1 月份平均气 温-10.5℃，极端最低气温-26℃，7 月份平均气温 23.2℃，极端最高气温 40.9℃。年 均降水量 406 毫米，无霜期 144 天，年均日照 2877 小时。在如此严酷的气候环境下， 该地区的桥面铺装结构容易出现低温开裂，高温车辙等病害。所以分析张家口市桥面铺 装结构在其气候环境下的力学状态，对该地区桥面铺装结构设计有非常重要的意义。 论文首先对桥面铺装温度进行测试，然后参考国内外相关文献和研究成果，以钢- 混凝土组合梁桥桥面铺装结构为研究对象，采用 ANSYS 有限元软件，建立热-结构耦合 三维有限元模型。先对桥面铺装层温度场进行分析，然后计算桥面铺装各结构层在温度 循环作用下的温度应力，分析沥青混凝土层厚度与弹性模量，C40 聚丙烯纤维混凝土层 厚度与弹性模量对桥面铺装各结构层温度应力的影响规律,为桥面铺装层的结构设计和 材料选择提供了理论依据。 关键词：桥面铺装, 温度场, 温度应力, 沥青混凝土, C40 聚丙烯纤维混凝土,有限元 i PAGE PAGE ii THE TEMPERATURE STRESS ANSLYSIS OF BRIDGE DECK PANEMENT OF STEEL AND CONCRETE COMPOSITE GIRDER BRIDGE ABSTRSCT According to the recorded meteorological date of observatory: Zhangjiakou climate is the east Asian plate arid continental monsoon climate that belongs to the transition zone of warm temperature and medium temperature. It is controlled by Mongolia high pressure long time throughout a year. In Zhangjiakou, in spring the wind is strong. Its climate is cool in summer, but rainfall is concentrated. The autumn is momentary. The winter is long bur little snow. The average of annual temperature is 7.5℃. The average of January temperature is 10.5℃. The extreme minimum temperature is -26℃. In July the average temperature is 23.2. The extreme maximum temperature is 40.9℃. The average annual rainfall is 406mm. there are 144 frost-free days. An average annual sunshine is 2877 hours. In such a harsh climate environment, the bridge deck pavement structure in this region is easy to appearing low temperature cracks and high temperature rutting. So the analysis of mechanics condition of Zhangjiakou bridge deck pavement structure in this climate environment is very important to bridge deck pavement structure design in this region. In this paper, first testing bridge deck pavement temperature, then on the basis of a review of relevant literature and research, as the steel-concrete composite bridge deck pavement to the rese