炎热气候沿海岸线长大桥梁桥面铺装方案研究

Research on Deck Pavement Schemes for Long and Large Concrete Bridge along Costal Line under Thermal Climate

依托广深沿江高速公路(深圳段)建设工程,开展炎热气候条件下沿海岸线长大桥梁桥面铺装方案研究。首先总结了国内外高速公路桥面铺装的典型结构;随后就桥面铺装的主要病害形式进行归纳,并对导致这些病害的原因进行分析;最后利用有限元软件对荷载位置、桥梁跨径、铺装层厚度及模量的变化对铺装层受力的影响进行了模拟。研究成果不仅为广深沿江高速公路(深圳段)项目的桥面铺装方案优化设计提供技术支撑,还可为我国炎热气候条件下沿海岸线长大桥梁桥面铺装方案的设计提供指导。

Based on the project of Guangzhou-Shenzhen expressway （Shenzhen section）, pavement schemes of long and large concrete bridge in thermal climate and coastal, estuarial ＆ harbor zone have been researched. Firstly, typical structures of concrete bridge deck pavement on expressway both in China and abroad are summarized. Secondly, forms and reasons of diseases of concrete bridge deck pavement are analyzed. In the end, effects of load position, bridge span, thickness and modulus of deck pavement to stress of pavement are simulated at the same time. It is believed that the conclusion of this paper can provide technical references for not only design optimization of bridge pavement of Guangzhou-Shenzhen expressway, but also pavement schemes of long and large concrete bridge in thermal climate and coastal, estuarial ＆ harbor zone in China.