混凝土桥面沥青铺装层受力敏感性分析

针对混凝土桥面沥青铺装层,进行铺装层沥青混凝土的受力分析,包括铺装层的粘结层结构状态、水平作用力、温度、超载的敏感性分析。同时为了明确对铺装层沥青混凝土的性能要求,把铺装层的受力状态与普通路面结构的受力状态进行对比分析,分析结果表明粘结层结构状态、水平作用力、温度及超载对铺装层受力状态有显著影响,桥面铺装受力情况比路面面层结构不利,因此应提高桥面铺装沥青混凝土的性能,尤其是沥青混凝土的抗疲劳性。

Stress Sensitive Analysis of Concrete Deck Asphalt Overlay

The stress state of asphalt overlay for concrete bridge deck is analyzed, including binding course state, horizontal force, temperature,and overload sensitive analysis.And the stress strain states of bridge deck overlay and road pavement are analyzed through comparisons to understand the performance requirement of asphalt bridge deck overlay.The analysis results show that the influence of binding course state, horizontal force, temperature and overload on overlay stress state is remarkable, and the bridge deck overlay is more vulnerable and sensitive than road pavement.So it is necessary to improve the performance of bridge deck overlay asphalt concrete, especially the anti-fatigue performance of asphalt concrete.