钢筋砼斜塔斜拉桥的设计特点及施工技术探讨.rar

钢筋砼斜塔斜拉桥的设计特点及施工技术探讨

【摘要】宝鸡市代家湾渭河大桥是我国钢筋混凝土斜塔斜拉桥中跨度最大、塔高最高的一座。本文以此桥为例，对斜塔斜拉桥的设计特点及施工技术做了简要介绍，以期达到抛砖引玉的目的。
【关键词】钢筋砼斜塔斜拉桥   设计特点  施工技术   探讨
一、工程概况
㈠概况
代家湾渭河大桥位于宝鸡市东部，跨越横贯市区东西的渭河和西宝高速公路，将是宝鸡市日后的交通大动脉和城市规划的轴心。代家湾渭河大桥建设是社会经济发展的必然要求，具有很大的经济效益和社会效益。
本桥基础采用φ1.5m钻孔灌注桩。
桥塔为钻石型钢筋砼结构，顺桥向倾角为60o，桥面以上斜塔长63m，桥面以下斜腿长10.425m。如此高的单面无背索钢筋砼斜塔为国内首座。结构及力学性能非常复杂，施工难度极大。
加劲梁为斜腹板单箱四室预应力砼箱梁，砼标号C50。
斜拉索为扇形单索面，布置在中央分隔带上。斜拉索采用双层PE防护，内层为黑色外层为彩色。
桥面铺装采用80mm的砼垫层和80mm的沥青砼耐磨层。
在过塔观光平台处，人行道
Leaning Tower of reinforced concrete bridge design features and construction technology

Abstract Baoji Weihe Chichiawan behalf of reinforced concrete Leaning Tower Bridge is the largest cable-stayed bridge in the span, the highest one tower. This paper uses the bridge as an example, on the leaning tower cable-stayed bridge design features and construction techniques are introduced in order to get feedback purposes.
Key words design features reinforced concrete Stayed Bridge Construction Technology
First, project survey
I Overview
On behalf of the Weihe River Bridge is located in Baoji City Chichiawan east, across the Weihe River running through the urban East and West Po Highway, will be the future traffic artery in Baoji City and urban planning axis. On behalf of the Weihe River Bridge construction Chichiawan necessary requirement for social and economic development, has great economic and social benefits.
The bridge foundation will use φ1.5m bored.
Tower for the diamond-type reinforced concrete structure, along the bridge to the inclination of 60o, a long bridge over the Leaning Tower of 63m, deck less inclined leg length 10.425m. Not back such a high-sided cable Leaning Tower of the nation's first reinforced concrete. Structure and mechanical properties of very complex construction extremely difficult.
Stiffening girder with inclined web single box at room prestressed concrete box girder, concrete grade C50.
Cable for the fan-shaped single cable plane, arranged in the central reserve on. Cable protection with double PE inner layer outer layer is black in color.
The concrete bridge deck using 80mm and 80mm cushion layer of asphalt concrete wear.
Office tower observation deck in the past, the sidewalk