桁式组合拱桥体系温变及混凝土收缩内力计算参数取值分析与探讨  

PARAMETERS ANALYSIS AND DISCUSSION IN INTERNAL FORCE CALCULATIONS FOR TEMPERATURE CHANGE AND CONCRETE SHRINK OF TRUSSED COMBINATION ARCH BRIDGE

作　　者：杜镔[1] 贾宁[1] 丁作常[1] 陈冠桦[1] 赵杰华[1] 

机构地区：[1]贵州省交通规划勘察设计研究院,贵阳550004

出　　处：《贵州科学》2007年第B05期223-229,共7页Guizhou Science

基　　金：交通部西部科技基金资助项目:编号2005-318-000-17

摘　　要：已建的桁式组合拱桥在计算温变、混凝土收缩效应时采用了《公路砖石及混凝土桥涵设计规范》(JTJ022-85)第4.2.8条的规定.本文结合规范该条规定取值的依据来源分析以及桁式组合拱桥的结构特点,提出了桁式组合拱桥体系温变、混凝土收缩内力计算的参数取值应按桁式杆件结构取值,不应进行折减.滋以交流和探讨,供设计使用参考.The Act 4.2.8 in ＂The Design Standard of Highway Masonry and Concrete Bridge＂ is adopted in calculating the effect caused by temperature changing or concrete shrink and creep of trussed combination arch bridge. According to the analysis of original adopted parameter＇s value in the standard and the characteristics of trussed combination arch bridge, the article brought forward that in the adoption of parameter＇s value for calculation of internal force caused by temperature changing or concrete shrink and creep of trussed combination arch bridge, it would be in accordance with the structures of the trussed members, and should not be deducted or reduced. This is for reference of the bridge design.

关 键 词：桁式组合拱桥 体系温变 混凝土收缩 内力 参数 

分 类 号：U441.5[建筑科学—桥梁与隧道工程] U448.224[交通运输工程—道路与铁道工程]