摘要
针对国内外对桥梁缓冲装置的形式和抗震性能研究不足的情况,基于高弹性橡胶材料,设计了一款应用于桥梁的主梁与主梁、主梁与桥台之间的新型桥梁抗震缓冲装置,此装置造价低、拆卸方便且便于维护。通过同济大学加载实验室的液压伺服作动器进行加载,得到该装置的四折线滞回模型和力学模型。并以简支梁桥为例,通过建立有限元模型,分析在不同桥梁孔数、桥墩高度、桥梁跨径以及桥梁跨径比的情况下,对桥梁端位移、主梁轴力、墩顶剪力和碰撞力等关键受力参数进行抗震性能研究,结果表明:该装置可以通过自身变形吸收地震波带来的冲击力,减小地震作用引起桥梁的受力和变形,可明显提高桥梁的抗震性能,具有较高的推广价值。
A new bridge seismic cushioning device between the main girder and the main girder,the main girder and the abutment is designed based on the high elasticity rubber material,which is based on the research on the form and seismic performance of the bridge buffer device at home and abroad.,This device is low cost,easy to disassemble and easy to maintain. The four-fold hysteresis model and the mechanical model of the device were obtained by loading the hydraulic servo actuator of Tongji University. Taking the simply supported girder bridge as an example,the finite element model is used to analyze the influence of bridge length, bridge height, bridge span and bridge span ratio. Force and collision force. The results show that the device can absorb the impact force of the seismic wave and reduce the stress and deformation of the bridge caused by the earthquake action,which can obviously improve the seismic performance of the bridge,and have a high promotional value.
出处
《公路工程》
北大核心
2018年第1期133-138,共6页
Highway Engineering
基金
四川省交通厅科技项目基金(2012C14-1)
四川省教育厅重点科研项目(17ZA0248)
关键词
桥梁抗震
主梁
跨径比
梁端位移
bridge seismic resistance
main beam
span ratio
beam end displacement
作者简介
吉力此且（1985-）,男,四川布拖人,工程硕士,工程师、讲师,研究方向从事土木工程施工技术研究与教学工作.
