水平往复荷载作用下钢箱提篮拱弹塑性力学性能研究  

Research of Elastic-plastic Mechanical Properties of Steel Basket-handle Arch Ribs with Box-section under Horizontal Cyclic Loading

作　　者：王占飞[1] 谭凌霄 吴佳新 宋阳 WANG Zhanfei;TAN Lingxiao;WU Jiaxin;SONG Yang(School of Transportation and Geomatics Engineering,Shenyang Jianzhu University,Shenyang,China,110168;Jiangsu Zhongshe Group Co.Ltd.,Wuxi,China,214026;China Railway Construction Engineering Group No.4 Construction Co.Ltd.,Hangzhou,China,310051;Shenyang Huabo Architectural Design Co.Ltd.,Shenyang,China,110020)

机构地区：[1]沈阳建筑大学交通与测绘工程学院,辽宁沈阳110168 [2]江苏中设集团有限公司,江苏无锡214026 [3]中铁建工集团第四建设有限公司,浙江杭州310051 [4]沈阳华博建筑设计有限公司,辽宁沈阳110020

出　　处：《沈阳建筑大学学报（自然科学版）》2024年第1期131-140,共10页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金重点项目(51938009)。

摘　　要：目的 探究倾角、矢跨比及宽跨比三个参数对钢箱提篮拱在水平往复荷载作用下力学性能的影响,为钢提篮拱桥抗震设计提供理论基础。方法 通过改变参数,建立54个钢箱提篮拱有限元模型,在水平往复荷载作用下进行滞回分析,研究钢箱提篮拱水平力-位移滞回性能、极限承载力和拱顶横撑内力、变形在不同参数条件下的变化规律。结果 随着拱肋倾斜角度、宽跨比的增加或矢跨比的减小,结构初期刚度、极限承载能力均有较大提高,但横撑内力也随之增加,并会产生局部失稳破坏,影响结构的承载能力。结论 增加拱肋倾斜角度对钢箱提篮拱横向力学性能有较大改善,但在设计时应注意横撑内力增加带来的不利影响。The purpose of this paper is to explore the influence of three parameters,inclination angle,rise-span ratio,and width-span ratio on the mechanical properties of steel basket-handle arch ribs with box-section under horizontal cyclic loading and provide a theoretical basis for seismic design of steel basket-handle arch bridge.The finite element model of 54 steel basket-handle arch ribs with box-section was established,and the hysteresis analysis was carried out to explore the mechanical properties under different parameters such as ultimate bearing capacity of arch ribs,internal forces and deformation of transverse brace.The results show that with an increase in inclination angle and width-span ratio or with a decrease in rise-span ratio,the initial stiffness and ultimate bearing capacity of the arch ribs increase gradually;however,the internal force of the cross brace also increases and produces local instability and damage,which will affect the bearing capacity of the structure.It was shown that the transverse seismic performance of the steel basket handle arch ribs with box-section can be improved greatly by increasing the inclination angle of arch rib,but it is necessary to pay attention to the adverse effect caused by the increase of internal force of transverse brace.

关 键 词：钢提篮拱肋 力学性能 水平往复荷载 倾斜角度 矢跨比 宽跨比 

分 类 号：TU391[建筑科学—结构工程]