装配式预应力混凝土空心板桥铺装层力学性能分析
发布时间：2018-07-18 07:39
【摘要】：空心板桥是目前桥梁建设中使用率较高的桥型之一,而桥面铺装层对于桥梁结构自身,起到了保护桥面板、改善桥梁上部结构耐久性并提高使用年限的作用。桥面铺装处于桥梁与道路两个专业的交叉领域。长期以来,其重要性没有得到应有的重视,相较于桥梁结构和道路工程方向近些年的高速发展,桥梁铺装层的研究却相对滞后。加之空心板桥结构具有一定特殊性,其铺装层在实际运营过程中损坏较为严重。因此,为了改善空心板桥铺装层的受力性能,延长空心板桥的使用寿命,对其铺装层进行研究显得十分必要。空心板桥铺装层的受力状况十分复杂,其力学特性不但受到自身材料的限制,还受到外界环境温度、荷载条件的影响,所以对空心板桥铺装层的力学分析必须考虑各种因素的综合作用。本文利用有限元分析软件ANSYS建立了空心板桥的三维实体单元模型,通过在不同位置布置车辆荷载,确定其横桥向和顺桥向的荷载最不利位置。并在此基础上,系统的研究了可能对铺装层受力性能造成影响的一系列因素,分别讨论了沥青面层及混凝土铺装层的厚度和弹性模量、铰缝混凝土模量、梁体混凝土模量、梁体均匀升温降温和正、反温度梯度作用下的铺装层受力情况,并系统探讨了每一种影响因素对空心板桥铺装层的受力规律可能产生的影响。本文的分析结果对于空心板桥及其桥面铺装层的设计有一定的参考价值,也对进一步研究空心板桥桥面铺装问题具有指导意义。
[Abstract]:The hollow slab bridge is one of the bridge types with high utilization rate in the bridge construction at present, and the deck pavement plays the role of protecting the bridge deck, improving the durability of the bridge superstructure and increasing the service life for the bridge structure itself. Deck pavement is located in the intersection of bridge and road. For a long time, the importance of bridge pavement has not received due attention. Compared with the rapid development of bridge structure and road engineering in recent years, the study of bridge pavement is relatively lagging behind. In addition, the hollow slab bridge structure has some particularity, the pavement is damaged seriously in the actual operation process. Therefore, in order to improve the mechanical performance of hollow slab bridge pavement and prolong the service life of hollow slab bridge, it is necessary to study its pavement. The mechanical properties of the pavement of hollow slab bridge are not only limited by its own materials, but also affected by the external environment temperature and load conditions. Therefore, the mechanical analysis of hollow slab bridge pavement must consider the comprehensive effect of various factors. In this paper, the three-dimensional solid element model of hollow slab bridge is established by using the finite element analysis software ANSYS. The most disadvantageous position of the load on the transverse bridge and the downstream bridge is determined by arranging the vehicle load in different positions. On this basis, a series of factors which may affect the mechanical performance of pavement are systematically studied. The thickness and elastic modulus of asphalt surface and concrete pavement, the modulus of hinged joint concrete and the modulus of beam concrete are discussed respectively. Under the action of uniform heating and cooling and positive and inverse temperature gradient, the stress of the pavement is studied systematically, and the possible influence of each influencing factor on the stress law of the pavement of hollow slab bridge is discussed systematically. The analysis results of this paper have some reference value for the design of hollow slab bridge and its deck pavement, and also have guiding significance for further study of hollow slab bridge deck pavement.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U443.33
本文编号：2131212
[Abstract]:The hollow slab bridge is one of the bridge types with high utilization rate in the bridge construction at present, and the deck pavement plays the role of protecting the bridge deck, improving the durability of the bridge superstructure and increasing the service life for the bridge structure itself. Deck pavement is located in the intersection of bridge and road. For a long time, the importance of bridge pavement has not received due attention. Compared with the rapid development of bridge structure and road engineering in recent years, the study of bridge pavement is relatively lagging behind. In addition, the hollow slab bridge structure has some particularity, the pavement is damaged seriously in the actual operation process. Therefore, in order to improve the mechanical performance of hollow slab bridge pavement and prolong the service life of hollow slab bridge, it is necessary to study its pavement. The mechanical properties of the pavement of hollow slab bridge are not only limited by its own materials, but also affected by the external environment temperature and load conditions. Therefore, the mechanical analysis of hollow slab bridge pavement must consider the comprehensive effect of various factors. In this paper, the three-dimensional solid element model of hollow slab bridge is established by using the finite element analysis software ANSYS. The most disadvantageous position of the load on the transverse bridge and the downstream bridge is determined by arranging the vehicle load in different positions. On this basis, a series of factors which may affect the mechanical performance of pavement are systematically studied. The thickness and elastic modulus of asphalt surface and concrete pavement, the modulus of hinged joint concrete and the modulus of beam concrete are discussed respectively. Under the action of uniform heating and cooling and positive and inverse temperature gradient, the stress of the pavement is studied systematically, and the possible influence of each influencing factor on the stress law of the pavement of hollow slab bridge is discussed systematically. The analysis results of this paper have some reference value for the design of hollow slab bridge and its deck pavement, and also have guiding significance for further study of hollow slab bridge deck pavement.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U443.33
【参考文献】
相关期刊论文 前6条
1 黄炳权;ANSYS在连续刚构桥温度效应分析中的应用[J];湖南城市学院学报(自然科学版);2005年01期
2 逯彦秋;张肖宁;唐伟霞;;桥面铺装层温度场的ANSYS模拟[J];华南理工大学学报(自然科学版);2007年02期
3 肖斌,何雄伟,陈应波,石玉华;桥涵桥面混凝土铺装与复合铺装结构设计[J];武汉理工大学学报;2003年12期
4 张占军,胡长顺,王秉纲;水泥混凝土桥面沥青混凝土铺装结构设计方法研究[J];中国公路学报;2001年01期
5 杨三强;郝培文;汤立群;刘涛;;钢桥面铺装层弹性模量与铺装层厚度对铺装体系受力影响分析[J];公路工程;2012年01期
6 罗立峰,钟鸣,黄成造;桥面铺装设计方法探讨[J];中南公路工程;1999年02期
相关博士学位论文 前1条
1 黄成造;钢箱梁桥面铺装力学行为与结构优化研究[D];长安大学;2010年
相关硕士学位论文 前2条
1 张军伟;预应力混凝土空心板桥桥面铺装层结构性能分析[D];郑州大学;2007年
2 刘红琼;水泥砼桥桥面铺装防水粘结层性能研究[D];重庆交通大学;2008年
，本文编号：2131212
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2131212.html
