桥面板

• To improve the binding strength between the deck slabs and deck surfacing layer of badong changjiang river highway bridge and to provide the surfacing layer with anti - cracking ductility , a series of technical measures has been taken in the construction of the deck surfacing of the bridge , including those of embedding binding reinforcement in the deck slabs , spraying inorganic binding agent between the slabs and layer , replacing part of the cement with micro expansion agent and adding appropriate amount of polypropylene fibers to the concrete
  摘要巴东长江公路大桥桥面铺装，通过采取预埋桥面粘接钢筋、喷涂无机界面粘结剂、用微膨胀剂替代部分水泥、在混凝土中掺入适量的聚丙烯纤维等措施来提高桥面板与铺装层间的界面粘结强度和给桥面抗裂增韧。
• In these thesis , on the basis of existing data collected of arch bridges and dynamics , simply introduce the development and application of the analytical method and finite element numerical analysis method of arch bridges . taking the example of pubugou cfst arch bridge , establish 3 - d finite element model of it with software ansys , and analyze its natural vibration . the effects on inherent vibration of the differences of structure parameters , the restriction of the deck and the effects of different arrangements of cross braces are analyzed
  本文在收集有关拱桥及动力学资料的基础上，分析了拱桥动力学的解析分析法和有限元数值分析方法的优缺点，同时以瀑布沟大桥为背景，使用ansys软件建立了空间有限元模型，实施了桥跨结构的自振特性分析；并分析了考虑到模型简化过程中部分结构参数取值差异、桥面板的约束状况不同等因数对自振特性结果的影响；此外还对桥面上的横撑布置不同导致对自振特性的影响作了分析。
• Therefore , it might be very essential to study the cable stayed bridge of the super breadth composite beam . additionally , the main problems of the study are as follows : 5 、 the distributing for stress of lengthways and transverse in transect ; 6 、 discussing the change of stress of lengthways and transverse , while the breadth of bridge is changing ; 7 、 in the cable stayed bridge of the super breadth composite beam , the lengthways reinforce rib and rigidity crossbeam exert influence on stress of bridge board ; 8 、 while tower and beam are concretion , main tower affects bridge board
  鉴于目前关于此类桥型研究成果不多，就此作了下列若干问题的研究： 1 、超宽叠合梁斜拉桥横断面上纵向应力分布和横向应力分布特点的研究； 2 、对超宽叠合梁斜拉桥随着桥宽变化时，上述两种应力分布变化规律进行探讨； 3 、在超宽叠合梁斜拉桥中，纵向加劲肋对桥面板受力的影响；横梁尤其是刚性横梁在桥面板受力中所起的作用； 4 、塔梁固结时，主塔对桥面板的作用。
• This deflection can not be neglect in bridge design . this paper adopts the steel box girder design of main span of anqing changjiang highway bridge as the study backgrouds , the thesis uses structrial analysis module of ansys software , ansys5 . 7 , to calculate and analysis the transverse deflection of steel box girder under selfgravity and secondary dead load
  本文以安庆长江公路主桥钢箱梁设计实践为研究背景，应用有限单元法通用程序软件系统ansys5 . 7中结构分析模块，计算了钢箱梁桥面板在恒载作用下的横向挠度值。并就影响桥面板横向挠度的多种变量进行较为深入的计算和分析。
• Before studying the concrete composite deck pavement , we introduce the basic theory of touching analysis , and come up with the realization of touching analysis in the fem analysis considering the touch of concrete bridge cover plates , asphaltum concrete overlay with bridge cover etc . connect with the experiment on the spot of bridge , the software ansys is used to solidity modeling and analyzing an assembly simply supported bridge before adding overlap , after adding overlap etc . , and study the influence of adding overlap on the underside bridge structures
  在进行装配式混凝土简支板桥复合铺装结构的探讨性研究前，先介绍了接触分析基本理论，并提出了考虑混凝土桥面板板间接触、沥青混凝土加铺层与桥面接触等接触分析在有限元分析中的实现思路。结合一座装配式简支板桥现场试验数据，采用ansys对该桥在加铺前后进行了实体建模与计算分析，讨论了沥青混凝土加铺层对下部结构物的影响。
• Based on the achievements done by others and the feature of superstructures , we establish the segment models under the different loads for the fem calculating of the deck and make it for the final conclusion that the distribution of the stresses in the deck of this main girder are uniform
  本文结合已有的研究成果以及金马大桥桥面系的结构特点，通过建立主梁的有限元节段模型，并分工况计算桥面板的正应力分布情况。计算结果表明，肋板式斜拉桥主梁的桥面板正应力分布是比较均匀的。
• Considering the past research results , frost resistance of concrete using portland cement , and the designed service life of 100 years of testing bridge , the control indexes of high durability concrete are defined in this paper . mixture proportion of concrete used in pier column , coping , precast box beam and plate of bridge is designed based on the compact pile theory , and construction technique is studied also
  结合课题组以往的研究成果,根据试验桥设计使用寿命100年的要求,确定出高耐久性混凝土的设计控制指标,基于最紧密堆积原理和最佳浆骨比原理对桥梁的墩柱、盖梁、预制箱梁和桥面板用高耐久性混凝土的配合比进行设计,并对其施工应用技术进行了研究。
• The author advances that the shear connector is simulated by two spring elements , which are vertical to each other and parallel to the interface between steel and concrete , and one multipoint constraint element , mpc element , which is vertical to the interface . the author also puts forward that the crack of the deck is simulated by the gap element which ca n ' t support longitudinal tensile force but can support longitudinal compressive force
  提出了以正交的两个平行于钢和混凝土界面的弹簧单元及一个垂直于界面的多点约束( mpc )单元来模拟剪力键，以小间隙接触( gap )单元来模拟混凝土桥面板的开裂，模型中忽略了混凝土板与钢梁接触面间由摩阻而产生的粘着力。