振动台试验用横向钢阻尼装置设计与测试

Design and Test of Transverse Steel Damper Device Used for Shaking Table Test

为验证横向钢阻尼装置在实际桥梁体系中的减隔震性能,利用有限元仿真分析技术设计了可供振动台试验使用的小尺寸横向钢阻尼试验装置,并结合现有试验条件对所设计的试验装置的性能进行了测试,同时对振动台试验中试验装置与工装的连接方式进行了研究。结果表明,V形架阻尼元件的塑性变形能够较为均匀地分布于其弧形段,初次达到最大位移时的等效塑性应变值满足使用寿命要求的建议值;试验所得滞回曲线饱满、稳定,屈服力符合设计要求,试验后V形架阻尼元件未发生断裂。由于部分试验中试验装置与工装间的胶层发生断裂,建议在振动台试验中采用焊接。

In order to verify the seismic isolation performance of the transverse steel damper device（TSDD） in the actual bridge system,finite element simulation analysis technology was used to design small steel damper device for shaking table test. In combination with existing experimental condition,the performance of equipment was tested,while the method of attachment in shaking table test was studied. The results showthat the plastic deformation of the V-shaped frame damping element can evenly distribute over its arcuate segment,the equivalent plastic strain at first time to reach the maximumdisplacement meets the recommended value for service life. The hysteresis curves obtained in the test are full,stable,and the yield strength is in good agreement with the requirements. After the test,there is no fracture occurred in the V-shape damping element. Because in some test,the adhesive layer between the test equipment and the auxiliary tool has fractured,the welded connection is suggested in shaking table test.