摘要
为了使减震结构体系能够同时获得良好的减震特性和震后自复位能力,提出采用钢螺旋弹簧装置与普通拉索减震支座组合成自复位拉索减震装置.重点阐述了组合装置的设计原理、构造特点及开发过程.通过对该装置系统各关键部分的试验研究,并根据试验结果模拟了其力学特性,建立了组合装置的恢复力模型.最后以实际工程为背景,建立了六塔斜拉桥结构中采用不同减震装置布置方案的模型.重点对比了不同减震模型的减震效果,以及塔梁处的残余位移大小问题.分析结果表明,这种组合减震装置不仅可以大大减轻地震对上部结构的影响,而且还具有很好的震后复位能力,因此具有较好的工程应用前景.
In order to achieve the characteristics of seismic reduction and self-centering capacity for the structure system after an earthquake, a self-centering cable-sliding friction aseismic device （SCSFAD） was developed, as- sembling the multi-chip steel spiral springs with the cable-sliding friction aseismic bearing （CSFAB）. In this pa- per, the mechanisms, structural features and development procedure of the assembly are introduced. Experimental research on the mechanical properties of the components of the SCSFAD was carried out. Based on the test and sim- ulation, a nonlinear hysteretic curve was established. Finally, the effect of seismic reduction of the SCSFAD which was adopted in the six-tower cable-stayed bridge was investigated by comparing the tower force and residual deform- ation with other aseismie devices. The results show that the SCSFAD could not only reduce the influence of the seis- mic force on the superstructure significantly, but could also reduce the residual displacement. Therefore, the SCS- FAD has good engineering application prospects.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2013年第12期1537-1543,共7页
Journal of Harbin Engineering University
基金
国家自然科学基金资助项目(90915011
51278376)
关键词
自复位
拉索减震支座
数值模拟
残余位移
self-centering
cable-sliding friction aseismic bearing
numerical simulation
residual displacement
aseismic device
