大跨径高墩预应力连续刚构桥施工关键技术研究

发布时间：2018-06-10 16:29

本文选题：连续刚构 + 应力控制　；参考：《重庆交通大学》2014年硕士论文

【摘要】：为了适应我国飞速发展的交通运输服务,跨越河流以及海湾的大跨径桥梁修建数量日益增多,大跨径预应力混凝土连续刚构桥梁在最近几年出现了快速发展的趋势。连续刚构桥,以满足大跨度桥梁受力的要求,梁的另一端无接头,有利于行车的舒适性,具有结构完整,抗震能力强,承载能力强,施工速度快等结构特点,因此在城市和农村建设占的比重越来越大。通过分析国内外连续刚构桥的建造技术水平以及发展方向,本文研究了大跨径连续刚构桥的施工监控以及施工关键技术。本文在实际工程的基础之上,对大跨径预应力混凝土连续刚构桥梁施工中的关键技术进行了较为系统的研究,主梁采用悬臂施工技术,桥墩施工采用翻模技术。最终使桥梁顺利合龙,从而成功对此项实际工程进行了施工控制,为同类型桥梁的施工提供了可供参考的施工控制方案。
[Abstract]:In order to adapt to the rapid development of transportation services in China, the number of long-span bridges across rivers and bays is increasing day by day. The long-span prestressed concrete continuous rigid frame bridges have been developing rapidly in recent years. The continuous rigid frame bridge can meet the requirements of the long-span bridge, and the other end of the beam has no joint, which is beneficial to the comfort of driving, and has the characteristics of complete structure, strong seismic capacity, strong bearing capacity, fast construction speed, and so on. As a result, the proportion of urban and rural construction is increasing. By analyzing the construction technology level and development direction of the continuous rigid frame bridge at home and abroad, this paper studies the construction monitoring and construction key technology of the long span continuous rigid frame bridge. On the basis of practical engineering, the key technology of long-span prestressed concrete continuous rigid frame bridge is systematically studied in this paper. The cantilever construction technique is used in the main girder and the inverted formwork technique is used in the pier construction. Finally, the bridge is successfully closed, and the construction control of the actual project is carried out successfully, which provides a reference construction control scheme for the construction of the same type of bridge.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4

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