摘要
为研究矢跨比、拱肋刚度和水平弹性支承刚度等设计参数对结构受力特性的影响,根据结构力学的力法导出了水平弹性支承的等截面抛物线拱在均布荷载作用下内力的计算表达式,便于结构设计初步阶段结构参数的确定.算例中本文公式计算结果与有限元计算结果一致,验证公式推导的正确性.分析结果表明:水平弹性支承的系杆拱桥可以根据支座水平刚度比不变、结构水平总刚度不变的原则进行简化.
To study the influence of design parameters,such as rise span ratio,stiffness of the arch rib and horizontal stiffness of elastic supports on the mechanical characteristics of the tied arch bridge,internal force calculation formula of the parabolic tied arch bridge with horizontal elastic supports under uniform load is derived by the force method in structural mechanics.It is facilitated to determine the structural parameters in the preliminary design stage.Accuracy of calculation expression proposed in this paper is demonstrated by results of the theoretical method which is consistent with that of the finite element method in the examples.Analyses show that the tied arch bridge with different elastic horizontal supports can be simplified according to the invariable principle of horizontal stiffness ratio and total horizontal stiffness.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2015年第2期175-179,共5页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(51108058)
关键词
系杆拱桥
抛物线拱
弹性边界
力法
参数分析
矢跨比
tied arch bridge
parabolic arch
elastic boundary
force method
parameters analysis
rise-span ratio
