学士学位论文___波形钢腹板组合梁桥.doc

波形钢腹板组合梁桥课程设计 姓名： 班级： 学号： 指导老师： 摘 要 波形钢腹板组合梁桥由于具有比较优越的结构性能，近几年来在国内国外的运用越来越多，主要特点体现在：（1）自重小（相比与传统PC梁桥），有利于减轻结构自重，抗震性能好（2）波形钢腹板主要承担剪力，不能承担纵向轴力，纵向弯曲可不计入波形腹板的影响（3）波形钢腹板PC箱梁抗弯刚度、抗扭刚度与横向刚度均比混 凝土PC箱梁小，设计中应注意按适当间距设计横隔板以增大其抗扭能力。除此之外，波形钢腹板组合箱梁特别适合于大、中跨径的多跨连续梁桥及连续刚构桥，当跨径超过50米时，经济效果很明显。MIDAS/Civil是针对土木结构，特别是分析象预应力箱型桥梁、悬索桥、斜拉桥等特殊的桥梁结构形式、动力弹塑性分析bstract Corrugated steel web composite girder bridge due to structure with superior performance, more and more used in recent years at home and abroad, the main characteristics embodied in: (1) the small weight, good seismic performance of corrugated steel web plate (2) the main bear shear (3) the corrugated steel web PC box girder bending stiffness and torsional stiffness and lateral stiffness are smaller than the PC box girder concrete.In addition, corrugated steel web composite box girder is particularly suitable for large, medium span of multi-span continuous beam bridge and continuous rigid frame bridge, when the span of more than 50 m, the economic effect is obvious.MIDAS/Civil is for Civil structure, at the same time, can do a nonlinear boundary, hydration heat, the material nonlinear analysis, static elastoplastic analysis and dynamic elastoplastic analysis, through the analysis of the modeling algorithm can greatly reduce the engineering calculation, improve the efficiency of analysis and design, to make a lot of convenient for Civil engineering structure analysis. Keywords:Corrugated steel web plate Bridges;Midas;The finite element analysis 目录 一：技术参数..............................4 二：结构构造..............................4-5 三：模型建立..............................6-14 四：有限元分析............................15-19 一．技术参数 1. 荷载及公路等级：公路-II级，两车道，二级公路； 2. 设计车速：80km/h。 2. 结构形式：简支梁； 3. 计算跨径：L=40.0m；桥宽：B=12.0m 4. 防撞护栏采用新泽西护栏（宽度50cm，高100cm，具体重量请根据自己拟定的图纸计算）； 5. 桥面铺装采用：1cm厚的沥青改性防水层，9cm厚的沥青混凝土； 6. 材料： 混凝土：主梁顶、底板采用C50混凝土； 钢 材：波形钢腹板采用Q345C（屈服应力：345MPa；设计荷载作用下