摘要：目前预应力混凝土被广泛的使用于各种中小跨度的桥梁中，而且大量采用预应力混凝土将是未来桥梁发展的趋势。在本次毕业设计中，对目前在公路桥梁中经常使用的预应力混凝土简支T型梁桥的设计做了全面的介绍，其中包括调研，外文资料的翻译，方案设计，结构计算以及施工图的绘制，并对预应力混凝土梁桥的特点做了详细的介绍。在确定方案时，根据调研及查阅大量的资料，在此桥位上布置了中承式拱桥，连续钢箱梁桥及预应力混凝土简支T型梁桥三种设计方案，根据“安全，功能，经济，美观”的原则，对各种桥型的优缺点进行了比选，而预应力混凝土简支T型梁桥在此桥位上更具有竞争力，反映在工程造价比较低，施工工期短，施工技术成熟，因此，最终选择了预应力混凝土简支T梁桥为设计方案。 结构计算着重进行了上部结构的计算，包括截面尺寸的拟定，内力计算（恒载内力，活载内力和附加内力的计算，内力组合以及影响线），配筋设计，施工阶段和使用阶段的应力验算，承载能力极限状态强度验算，刚度验算，变形验算。
此城市高架钢筋混凝土简支梁桥设计中，采用30+30+30+30+30，总跨度150的简支T梁形式设计，梁高采用等高度，跨中设置成马蹄形，以节省材料。全桥采用预制装配的施工方法，桥墩均采用双柱式桥墩，基础为钻孔灌注桩基础。8848
通过本次毕业设计，进一步加深了我对桥梁以及预应力混凝土的认识。
关键词： 预应力混凝土 T型梁桥 结构计算 设计方案 施工图
The design and calculation ofSimply supported reinforced concrete T-beam bridge
Abstract： Nowdays, the pre-stressed concrete is extensively used in various kinds of bridges with medium and small span ,and it will be a development trend in future to adopt the bridge of the pre-stressed concrete in a large amount.In this paper,I made an overall introduction of the pre-stressed T-section concrete beam bridge which is ofen used among highway at present. Including investigation and research,translation,scheme design ,calculation of structure and drawing. According to the investigation, I give three schemes--the steel tube filled concrete,the reinforced concrete arch bridge and T-section beam with pre-stressed concrete bridge. According to the principle of “safe,capability,economical,artistic”, I choose the T-section beam bridge with pre-stressed concrete finally.The calculation of structure mainly includes the superstructure such as the size design of the section , the internal force calculation ,the steel bars calculation ,the stress and intensity and displacement.
This city elevated reinforced concrete simply supported beam bridge design, using 30 +30 +30 +30 +30, the total span of 150 simply supported T beam forms design, high beam with equal height, set into a horseshoe cross to save material. Full-bridge using prefabricated construction methods are used double column pier piers, bored pile foundation for the foundation.
Through this graduation design, my understanding of the pre-stressed concrete are strengthened further .
Keywords: pre-stressed concrete, T-section bridge ,steucture calculation ,construction design
目 录
1 序言 1
2 设计资料 3
2.1 工程概况 3
2.3.1 设计荷载 4
2.3.2 设计车速 4
2.3.4 桥面横向布置 4
2.3.5 桥面坡度 4 城市高架钢筋混凝土简支T形梁桥设计+CAD图纸:http://www.751com.cn/gongcheng/lunwen_7343.html