钢管混凝土劲性骨架拱桥主拱圈外包混凝土的调载技术  

Load-adjustment Technology of Arch Ring Outer-covered Concrete of Concrete Filled Steel Tube Rigid Skeleton Arch Bridge

作　　者：邓年春[1,2] 童加明 林春姣 郭晓[1,2] DENG Nian-chun;TONG Jia-ming;LIN Chun-jiao;GUO Xiao(College of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Key Laboratory of Disaster Prevention and Engineering Structure Safety of Guangxi,Nanning 530004,China)

机构地区：[1]广西大学土木建筑工程学院,南宁530004 [2]广西防灾减灾与工程安全重点实验室,南宁530004

出　　处：《科学技术与工程》2020年第21期8452-8459,共8页Science Technology and Engineering

基　　金：国家自然科学基金(51868006);广西高等学校高水平创新团队及卓越学者计划(桂教人〔2018〕35号);四川省科技计划(2018GZ0052)。

摘　　要：劲性骨架混凝土拱桥为跨越山区峡谷的一种重要桥型,随着对更大跨径混凝土拱桥的需求日益迫切,首先就要解决将大体积量混凝土外包在劲性骨架上。在调查大量此类桥型基础上,总结出在浇筑外包混凝土时的几种调载方法,并列举出实际桥例证明其调载效果,得出不同调载方法的优劣及使用范围,及对大跨径钢管混凝土劲性骨架拱桥外包混凝土浇筑的展望。Stiff skeleton concrete arch bridge is an important type of bridge across the mountain canyon.With the increasing demand for larger span concrete arch bridge,it is necessary to solve the problem of pouring mass concrete on the stiff skeleton.Based on the investigation of a large number of such bridge types,several methods of loading and unloading concrete when pouring concrete were summarized firstly.Then the actual bridge examples to illustrate its load-carrying effect were enumerated,and the advantages and disadvantages of different methods of loading and the scope of use were obtained.Moreover,the outsourcing concrete pouring for long-span steel tube concrete skeleton arch bridge was prospected finally.

关 键 词：劲性骨架 拱桥 外包混凝土 调载 

分 类 号：U445.464[建筑科学—桥梁与隧道工程]