摘要
尼尔森体系钢管混凝土刚性系杆拱桥能提供较大的纵向刚度、良好的动力性能来满足铁路重载和高速运行的要求。某桥采用先拱后梁、系梁悬臂现浇方法施工。重点阐述了在各个施工阶段拱肋及系梁控制截面的施工监控要点,拱脚位移监测、吊杆力监测及基础沉降监测方法,并对系梁线形、拱肋及系梁关键截面处应力误差提出预警机制及调整原则,确保施工精度,从而使工程施工质量满足设计和施工规范要求。
Nielsen system concrete-filled steel tube rigid tied bar arch bridge can meet the demands of heavy haul railway and high speed with large longitudinal stiffness and superior dynamic performance.The bridge adopts the construction method of arch first and beam later and cantilever construction technique for tied girder.Key points of construction monitoring on arc-rib and tied girder controlling sections at every construction stage,monitoring methods of arch-foot displacement,hanger force,and base subsidence were described.The errors and the adjustment measures about alignment of tied girder and stress of tied girder and arc-rib at controlling sections were proposed to assure construction precision and to meet the requirements of the design and construction code.
出处
《施工技术》
CAS
北大核心
2010年第10期63-66,119,共5页
Construction Technology
基金
江苏省自然科学基金资助项目(BK2009723)
江苏科技大学船舶与海洋工程学院青年基金资助项目(2005CH031J)
关键词
刚性系杆拱桥
钢管混凝土
先拱后梁
尼尔森体系
施工监控
rigid tied bar arch bridge
concrete-filled steel tube
arch first and beam late
Nielsen system
construction monitoring
