大坪大桥设计稿毕业设计稿说明.docVIP

大坪大桥设计 【摘要】:本次设计内容属桥梁初步设计，主要结合所给桥址河床断面图和桥位的地质剖面图，以及地形和水文特征等条件进行初步方案设计。本次设计的主要目的在于对道桥专业大学所学知识的检验和巩固，培养我们综合运用所学理论和实践知识，分析和解决桥梁规划，设计及施工方案等各方面问题的基本技能，进一步培养学生成为工程师必备的基本素质。我们拟定三种桥梁桥型方案，通过比较分析其各自优缺点并编制方案，拟定其细部尺寸，最后通过经济比较，最终推选最佳方案作为推荐方案。 【关键词】: 桥梁设计 初步设计 推荐方案 【ABSTRACT】: This design is a preliminary design of XXXXXbridge. the main bridge on the river to the sectional drawing and exemplified geological section, as well as the terrain and hydrological features and other conditions for preliminary scheme design. The main purpose of this design is the knowledge of the bridge professional university inspection and consolidated, cultivate our integrated applying learning theory and practice knowledge, analyze and solve bridge planning, design and construction scheme and so on various aspects of the basic skills of the students become engineers, which further develop the essential quality. We develop three Bridges bridge plan, through comparative analysis their respective advantages and disadvantages and staffing solutions, formulate their detail size,finally through economic comparison, eventually elected optimal scheme as the recommended plan. 【Keywords】 bridge preliminary design 　the best pro With the expansion of Span,the prestressed concrete continuous rigid frame bridge has been development rapidly.The prestressed concrete continuous rigid frame maintenances the advantages of Continuous Beam Bridge，while its span has been further expanded. Than the cost of project reduced, and the rigidity of the structure can be guaranteed, while performance under the horizontal load, that is to say every flexible pier gains corresponding horizontal force according to its rigidity. In the design, the main work include : chosen the method of construction、Calculation of internal forces、Section stress、the carrying capability 、 estimate the steel bar and so on . JTG D60-2004 and JTG D62-2004 as the basis of this design. This graduation desig