桥梁工程PPT(姚林森第二版)第3篇 第6章

1、第三篇 悬臂与连续体系梁桥第6章 桥型实例介绍Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology本章内容 6.1 混凝土悬臂梁桥示例 6.2 混凝土连续梁桥示例 6.3 混凝土刚构式桥示例 Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of TechnologySCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CH

2、EN6.1 混凝土悬臂梁桥示例Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology（1）钢筋混凝土悬臂梁桥 悬臂梁的配筋采用焊接钢筋骨架。在设置支座的部位，梁内还设置了一些钢筋网，以承受较大集中力引起的横向拉应力。知识点：混凝土悬臂梁桥示例混凝土悬臂梁桥示例，开始讲解这个知识点三孔悬臂桥构造实例SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN6.1 混凝土悬臂梁桥示例Dept of Road & Bridge En

3、gineering, School of Transportation, Wuhan University of Technology（2）预应力混凝土悬臂梁桥 l如主梁横断面为T梁，为了抵抗负弯矩的需要，T梁下部做成马蹄形截面。l预应力筋的布置是根据结构的受力要求来确定的。知识点：混凝土悬臂梁桥示例混凝土悬臂梁桥示例，讲解结束本章内容 6.1 混凝土悬臂梁桥示例 6.2 混凝土连续梁桥示例 6.3 混凝土刚构式桥示例 Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technol

4、ogySCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN6.2 混凝土连续梁桥示例Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology（1）等高度连续梁桥南京长江二桥北引桥跨径：1630m+550m截面：箱梁，梁高1.5m，2.5m预应力：双向预应力体系主梁配纵向预应力筋桥面板配横向预应力筋知识点：混凝土连续梁桥示例混凝土连续梁桥示例，开始讲解这个知识点SCHOOL OF TRANSPORTATION, WUT PR

5、ODUCED BY：X J CHEN6.2 混凝土连续梁桥示例Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology北汊桥北引桥立面布置（mm）SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN6.2 混凝土连续梁桥示例Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology北汊桥北引桥横截面（

6、cm）SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN6.2 混凝土连续梁桥示例Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology（2）变高度连续梁桥 南京长江二桥北汊主桥的上部结构为90+3165+90m的五跨变截面预应力混凝土连续梁。 顶板束、底板束、腹板束。SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN6.2 混凝土连续梁桥示例Dept of Road

7、& Bridge Engineering, School of Transportation, Wuhan University of Technology知识点：混凝土连续梁桥示例混凝土连续梁桥示例，讲解结束南京长江二桥主桥为628m跨钢箱梁斜拉桥 南京长江二桥跨越流经南京市区的长江，位于1968年建成通车的著名的南京长江大桥下游11km。南京长江二桥南汊主桥为由过渡墩十辅助墩十南塔十北塔十辅助墩十过渡墩支承的跨度组合为58.5m246.5m628m246.5m58.5m=1238m的南、北对称的双塔双空间索面漂浮体系钢箱梁斜拉桥。南京长江二桥斜拉桥以其628m主跨跨度而名列世界十大斜拉桥第

8、三位，享有国内第一大斜拉桥之誉，并是南京长江二桥最大特色和亮点所在。本章内容 6.1 混凝土悬臂梁桥示例 6.2 混凝土连续梁桥示例 6.3 混凝土刚构式桥示例 Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of TechnologySCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN6.3 混凝土刚构式桥示例Dept of Road & Bridge Engineering, School of Transportation, Wuha

9、n University of Technology（1）带挂梁刚构式桥 重庆长江大桥知识点：混凝土刚构式桥示例混凝土刚构式桥示例，开始讲解这个知识点此桥跨径为（86.5+4x138.0+156.0+174.0+104.5)m,上部结构全长为1073m。利用两种不同长度的对称T构与跨径一律为35m的吊梁组合成不同的桥跨。桥宽为21m，行车道15m，两侧人行道各3m。SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN6.3 混凝土刚构式桥示例Dept of Road & Bridge Engineering, School of Transpor

10、tation, Wuhan University of Technology（2）连续刚构式桥虎门大桥辅助航道桥u 跨径：150+270+150米u 荷载：汽超20级，挂120u 桥宽：30米，6车道+分隔带+紧急停车带分两幅桥建设u 梁高：墩顶14.8m，跨中5.0mu 下部结构：双薄壁墩u 施工方法：悬臂浇筑SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN6.3 混凝土刚构式桥示例Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of

11、 Technology虎门大桥平面图SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHEN6.3 混凝土刚构式桥示例Dept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology虎门大桥SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHENDept of Road & Bridge Engineering, School of Transportation, Wuhan Univers

12、ity of Technology6.3 混凝土刚构式桥示例虎门大桥立面图SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHENDept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology6.3 混凝土刚构式桥示例虎门大桥辅航道立面布置图（）SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHENDept of Road & Bridge Engineering, School of

13、Transportation, Wuhan University of Technology6.3 混凝土刚构式桥示例虎门大桥辅航道桥横断面布置图（cm）SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHENDept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology6.3 混凝土刚构式桥示例虎门大桥辅航道桥箱梁分段图（cm）SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHENDept of Road & Bridge Engineering, School of Transportation, Wuhan University of Technology6.3 混凝土刚构式桥示例虎门大桥辅航道桥纵向预应力钢筋布置图（cm）SCHOOL OF TRANSPORTATION, WUT PRODUCED BY：X J CHENDept of Road & Bridge Engineering,