帮翻译一下摘要吧，就300字

来源：百度知道 编辑：UC知道 时间：2024/06/28 03:46:24
钢管混凝土拱桥是我国近年来桥梁建筑发展的新技术，具有自重轻、强度大、抗变形能力强、承载能力大等优点，并且用料省、安装重量轻、施工方便、工期短、养护工作量小，是大跨度拱桥的一种比较理想的结构形式。本设计桥梁跨度为102m, 系梁的设计截面为一箱三室，桥面宽33m，分为两幅，每幅3个车道。设计时只考虑单幅的设计。
本文首先拟定了结构的主要型式及尺寸。其次，利用Midas/Civil软件建立模型，分析结构的内力，进行内力组合，求出弯矩包络图，据此布置预应力钢束。再次，计算预应力损失及次内力。最后，进行截面强度的验算。
一座桥的设计包含许多考虑因素，在具体设计中，要求设计人员综合各种因素，作分析、判断，得出可行的最佳方案。

关键词：钢管混凝土拱桥 预应力钢束 次内力
要专业人士的，不要在线翻译的，在线翻译我也会

Pipe concrete arch bridge is a bridge construction in China in recent years the development of new technologies, with respect light, strength, strong anti-deformation, the advantages of large capacity, and the materials used in, install light weight, convenient construction, the short construction period, conservation workload Small, large-span arch bridge is a more ideal structure. The design of the bridge span to 102 m, the design of the beam section Room 903, for me, broad bridge 33 m, is divided into two, each three lanes. Designed to consider only a single design.
This paper first developed a structure of the main type and size. Secondly, the use of Midas / Civil software model, the structure of the internal forces, a combination of internal forces, obtained moment envelope map, Prestressed steel beam layout accordingly. Third, the calculation of loss and the internal forces of prestressed. Finally, a cross-section of the strength of checking.
A bridge design includ