摘要
以眉山市南河大桥主桥(75 m+125 m+75预应力混凝土变截面连续梁)为背景,对大跨径预应力混凝土悬臂浇筑斜交连续梁桥的总体布置、主梁构造、节段划分、预应力钢束布置、主梁纵横向受力、箱梁截面应力控制原则等相关内容进行总结,并针对连续箱梁斜交端部构造处理、斜交支承反力分配等问题进行探讨,以期为以后同类型桥梁设计提供参考。
Based on the background of the main bridge(75 m+125 m+75 m pre-stressed concrete variable cross-section continuous beam) of Nanhe River Bridge in Meishan City, this paper summarizes the relative contents of overall layout, main girder construction, segment division, location of pre-stressed steel strands,and control principles of longitudinal and transverse stresses of main girder, and section stress of box girder.This paper discusses the treatment of skew end structure and the distribution of skew bearing reaction of the continuous box girder in order to provide the reference for the design of the similar bridges in the future.
引文
[1]范立础.预应力混凝土连续梁桥[M].北京:人民交通出版社,1988.
[2]张继尧,王昌将.悬臂浇筑预应力混凝土连续梁桥[M].北京:人民交通出版社,2004.
[3]范立础.桥梁工程:上册[M].北京:人民交通出版社,2001.