摘要
在统计数据的基础上,构建钢管混凝土哑铃形截面提篮型标准拱桥,提出主要构造参数的合理取值范围,并进行极限稳定承载力分析.分析结果表明,对于此标准拱桥的面外稳定性而言,存在一个较优拱肋倾角9°,其系梁刚度与拱肋刚度比值应接近1.0,宽跨比取值建议为0.095.吊杆非保向力效应在拱肋倾角大于6°后逐渐增大,在系梁与拱肋刚度比大于1.0时趋于稳定,总体而言对结构的横向稳定性约有1.15倍的提升.
Based on the statistical data,a standard CFST X-type dumbbell-shaped cross-section arch bridge with a reasonable range of main structural parameters was built and the ultimate stability bearing capacity also be analysised.The analysis results showed that for the out-of-plane stability of this standard arch bridge,there would have an excellent arch rib inclination angle of 9°;the stiffness ratio between the tie beam and the arch rib should close to 1.0;the value of the wide span ratio was recommended to 0.095.The non-directional loads effected gradually increases after the inclination angle of the arch rib was greater than 6°;it tended to be stable when the stiffness ratio between the tie beam and the arch rib was greater than 1.0,and the lateral stability of the structure was improved about 1.15 times.
作者
韦建刚
陈家炜
谢志涛
吴庆雄
陈宝春
平建春
WEI Jiangang;CHEN Jiawei;XIE Zhitao;WU Qingxiong;CHEN Baochun;PING Jianchun(Fujian Key Laboratory of Multi-Disasters Prevention and Mitigation in Civil Engineering,Fuzhou University,Fuzhou,Fujian 350108,China;College of Civil Engineering,Fujian University of Technology,Fuzhou,Fujian 350118,China)
出处
《福州大学学报（自然科学版）》
CAS
北大核心
2019年第5期663-668,共6页
Journal of Fuzhou University(Natural Science Edition)
基金
国家自然科学基金资助项目(51878172)
福建省高校创新团队发展计划项目
关键词
标准拱桥
钢筋混凝土
承载力
非保向力
哑铃型截面
提篮拱
standard arch bridge
concrete-filled steel tube
bearing capacity
non-directional loads
dumbbell-shaped cross-section
X-type arch bridge
