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本设计题目为C市L河大桥设计，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。内容包括桥型方案设计、基本资料、设计图纸、承载力验算。本着“安全、经济、美观、实用、环保”的设计原则，提出三种方案--钢筋混凝土简支T形梁桥、上承式拱桥和不等跨斜拉桥。根据设计原则、地质条件、施工方法等综合比对后选定钢筋混凝土简支T形梁桥。
为满足使用要求、达到结构可靠性标准、合理控制工程造价，本次设计进行了主梁计算（包括荷载横向分布系数计算、作用效应计算）、持久状况承载力极限状态下截面设计、配筋计算（包括配置主梁受力钢筋计算、持久状况截面承载能力极限状态计算、斜截面抗剪承载力计算）以及行车道板计算（永久荷载效应计算、截面设计与配筋及验算），并绘制了钢筋配置图。
经分析比较及验算表明该设计计算方法正确，内力分布合理，符合设计任务要求。
关键词：简支T形梁桥，钢筋混凝土，结构设计计算，设计图纸。
The design entitled C City L River Bridge, according to 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. "Safe, economic, aesthetic, practical and environmentally friendly" design principle, put forward three options - simply supported reinforced concrete T-shaped beam bridge, the arch bridge and the unequal span cable-stayed bridge. According to design principles, geological conditions, construction methods, selected after comprehensive comparison of the reinforced concrete T-shaped bridge beams.
To meet the requirements to achieve structural reliability standards, the reasonable control of project cost. The calculation of the main girder design (including calculation of transverse load distribution factors, calculated action effect), persistent state section design limit state capacity, reinforcement calculation (including the configuration calculation of the main steel beams, permanent position calculation section at ultimate limit state , oblique shear strength calculation), and calculated (permanent load effect calculation, section design and reinforcement and checking). And draw the steel configuration chart.
By analysis and comparison and checking that the correct calculation method, the internal force distribution is reasonable, consistent with the design mission requirements.
Key words: T-shaped bridge beams, reinforced concrete, structural design calculations, design drawings. | 
