预应力混凝土斜拉桥毕业设计.docVIP

本科毕业设计说明书

题目：田心五花河大桥设计

院〔部〕：土木工程学院

专业：土木工程

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完成日期：

目录

TOC\o1-3\h\z\u摘要································································Ⅲ

ABSTRACT··························································Ⅳ

1前言

1.1预应力混凝土的开展·····································1

1.2斜拉桥的开展·········································3

1..2.1国外斜拉桥的开展·····································5

1.2.2国内斜拉桥的开展

1.2.3斜拉桥的动向和开展

2正文

2.1方案比选···························································8

2.1.1各种设计桥式特点················································12

2.1.2方案的比拟··························18

2.2上部结构的计算··········································20

2.2.1离散结构划分单元··············································21

2.2.1建立工程.···········································21

2.2.3输入数据·························································21

2.2.4工程计算

2.3下部结构的计算

2.3.1多排桩的计算

2.3.2单桩的计算

3结论······························································56

4．谢辞······························································57

5参考文献··························································58

6附录······························································59

摘要

近几十年来，由于我国科学技术的进步，工业水平的提高，桥梁建筑技术得以讯速开展。千里江面的座座跨江大桥，现代高速公路迂回交叉的立交桥，高架桥和城市高架道路，以及更长的跨海湾，海峡大桥，城郊高速铁路与轻轨运输高架桥等，犹如一条条“彩虹”使得天堑变通途。并逐步建成立体交通网络，极大地改变了我国的交通状况，拉动了国民经济的开展，方便了广阔人民群众的生活。在这些桥梁中不仅有外表朴实却适应性强、施工方便、投资小、效益高的刚架桥、连续--刚构桥,气势雄伟的悬索桥，钢筋铁骨的钢桥，体形优美，历史悠久的拱桥，更少不了华美富贵的斜拉桥.

在我国桥梁建筑技术快速开展的同时，斜拉桥在我国的开展也进入了鼎盛时期。随着预应力技术的开展，这阶段修建的斜拉跨度从200余米到600米以上，而且我国在400米以上的长大斜拉桥大多在这个阶段修建。这些大跨度桥