摘要 本题为 C 市 N 河大桥设计，是根据设计任务书的要求和相关规定，对该桥进行方案比选和设计的。容包括桥型方案设计、基本资料、设计图纸、承载力验算。根据设计资料和技术条件，本着“安全、经济、美观、有用、环保”的十字原则，提出三种方案——预应力空心板简支梁桥、上承式拱桥和斜拉桥，选定预应力空心板简支梁桥为最优的设计方案。结构设计的目的为满足使用要求、达到结构可靠性标准、合理控制工程造价。本设计按承载能力极限状态和正常使用极限状态进行作用效应的组合，取其最不利效应组合进行设计。本桥计算容有恒载计算、活载计算、汽车冲击影响、力效应组合、预应力钢筋数量的估算与配置、承载能力极限状态计算，并绘制了钢筋配置图。本设计依据工程情况和现场情况，采纳预应力先法施工，在施工平面上布局做到合理，以求得高质量完成工程施工。关键词：空心板简支梁桥，预应力，结构设计计算，设计图纸AbstractC City N River Bridge design is based on the design requirements of the mission statement and the relevant provisions of the scheme selection of the bridge and design. Include bridge design, basic information, design drawings, Bearing Capacity. According to design information and technical conditions, in the "security, economic, aesthetic, practical, environmental protection, "the cross principle, put forward three options - simply supported prestressed hollow slab bridge, the arch bridge and the bridge, the selected Prestressed hollow bridge beams for the optimal design. Structure designed to meet the requirements to achieve structural reliability standards, the reasonable control of project cost. The design at ultimate limit state and serviceability limit state action effect of the combination, whichever is the most unfavorable combination of design effects. The calculation of the contents of exercise and the bridge set computing, live load calculations, car shocks, internal force effect combination, and estimate the number of prestressed configuration, u...
