基于ANSYS的高速公路桥梁桥面铺装的受力特性研究

发布时间：2019-05-27 20:17

【摘要】：混凝土桥梁桥面铺装是比较容易发生早期病害的部位,目前我国现有的桥梁设计和路面设计规范并没有规定严格的设计指标、参数等。目前的设计方法还不能起到阻止早起病害的发生。本文以安徽省高速公路桥梁桥面铺装结构层为背景,利用ANSYS软件建立了桥梁的有限元实体模型,针对桥面铺装结构层进行了受力分析。本文对桥面铺装结构层进行了简化处理,建立了一个有效的理论模型。分析了桥面铺装结构层的最不利位置,在确定的不利位置模拟车辆荷载,分析了桥面铺装层的受力特点。根据目前实际情况针对轴载变化进行了模拟分析,得出桥面铺装结构层的受力特点。根据受力特点提出改善措施。如改变铺装结构层厚度、提高沥青混凝土模量的措施。对措施的可行性进行了模拟分析,根据模拟数据厚度的增加只能起到部分改善作用,模量的增加可以改善受力情况。
[Abstract]:Concrete bridge deck pavement is prone to early diseases. At present, the existing bridge design and pavement design codes in our country do not specify strict design indexes, parameters and so on. The current design method can not prevent the occurrence of early disease. In this paper, based on the bridge deck pavement structure of Anhui expressway, the finite element solid model of the bridge is established by using ANSYS software, and the stress analysis of the bridge deck pavement structure is carried out. In this paper, the structural layer of bridge deck pavement is simplified and an effective theoretical model is established. This paper analyzes the most unfavorable position of the bridge deck pavement structure layer, simulates the vehicle load in the determined unfavorable position, and analyzes the force characteristics of the bridge deck pavement layer. According to the actual situation, the change of axle load is simulated and analyzed, and the stress characteristics of bridge deck pavement structure layer are obtained. According to the characteristics of the force, the improvement measures are put forward. Such as changing the thickness of pavement structure layer and improving the modulus of asphalt concrete. The feasibility of the measures is simulated and analyzed. According to the increase of the thickness of the simulated data, the increase of modulus can only play a partial improvement role, and the increase of modulus can improve the stress.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U443.33

【相似文献】