摘要
为了研究双柱桥墩在地震作用下各节点之间的破坏状态,确定了塑性铰出现的位置及特性值,研究了双柱桥墩的抗震性能.采用基于位移的Pushover方法对双柱桥墩进行推覆分析,经Midas Civil对桥梁塑性变形的分布特点及塑性铰的位置、结构弹塑性性能及抗震性能进行模拟,得到模型桥墩塑性铰的有效长度为30 cm,桥墩最先破坏点发生在右墩的墩底,桥墩达到极限破坏时的水平力为351.7 kN,桥墩的最大水平位移为78 mm.基于Pushover分析方法可以较真实地反应桥墩在拟静力荷载下的破坏过程,可以作为双柱桥墩抗震分析的依据.
In order to study the damage states among the nodes of double column piers under seismic action,the position and characteristic value of plastic hinge were determined,and the seismic resistance of double column piers was studied.A Pushover analysis of double column piers was performed with the Pushover method based on the displacement.In addition,the distribution characteristics of bridge plastic deformation,the position of plastic hinge,the elastic plasticity of structure and the seismic resistance were simulated with the Midas Civil software.As a result,the effective length of plastic hinge of model piers is 30 cm,the first damage point of piers occurs at the bottom of right pier,the horizontal force of piers reaching the maximum damage is 351.7 kN,and the maximum horizontal displacement of piers is 78 mm.The analysis method based on Pushover can really reflect the damage process of piers under the quasi-static load,and can be used as the basis for the seismic resistance analysis of double column piers.
作者
包龙生
桑中伟
叶学峰
BAO Long-sheng;SANG Zhong-wei;YE Xue-feng(School of Transportation Engineering,Shenyang Jianzhu University,Shenyang 110168,China)
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2021年第2期228-234,共7页
Journal of Shenyang University of Technology
基金
国家十三五重点研发计划重点专项基金项目(2018YFC0809600,2018YFC0809606)
辽宁省重点研发计划指导计划基金项目(2018416028)
沈阳市建委城乡系统科研项目(201904)
沈阳市科技创新专项基金项目(F16-095-1-00).
