土木工程与管理学报2012，Vol.29Issue(1)：5-9,5.
混凝土拱桥拱上建筑轻型化研究
Research on Reducing the Weight of Spandrel Structure for the Concrete Arch Bridges
摘要
Abstract
Development of long-span RC arch bridges are restricted by two critical factors, the heavy self-weight and the difficult construction techniques. In order to advance the competitiveness and further application, researches on reducing the self-weight of spandrel structures of RC arch are conducted by either making the deck from simply supported to continuous or utilizing composite structure in Wanxian Yangtze River Bridge with a main span of 420 m. The results of the trial design by using composite structure show that with comparison of the original bridge the self-weight of spandrel structure is reduced by 35% , and the axial force and bending moment of arch springing is decreased by 16% and 17%. Simultaneously, the bending moment seismic response of arch springing in longitudinal and transverse direction reduce 45% and 13% under the three-directional ground motions and the axial force of arch springing in longitudinal direction reduce 44% and the deflection of arch crown in the transverse direction reduce 18%. The composite structure is superior to the continuous girder solution in the static and seismic performance which is feasible in practical application.关键词
拱桥/拱上建筑/轻型化/组合结构Key words
arch bridge/ spandrel structure/ light-weight/ composite structure分类
交通工程引用本文复制引用
黄卿维,陈宝春,吴庆雄,王征..混凝土拱桥拱上建筑轻型化研究[J].土木工程与管理学报,2012,29(1):5-9,5.基金项目
科技部国际科技合作项目(2009DFA72220) （2009DFA72220）
国家自然科学基金(51178119) （51178119）
