新型装配式轻钢混合结构振动台试验研究

SHAKING TABLE TEST RESEARCH ON A NEW TYPE OF PREFABRICATED LIGHT GAUGE STEEL HYBRID STRUCTURE

对新型装配式轻钢混合结构在振动台上进行了地震模拟试验。试验模型底层为钢框架、第2层为冷弯薄壁混合结构的1∶1足尺模型。输入两条天然地震波、一条人工波对模型分别进行了X、Y单向地震波加载测试,加载后结构整体完好、能够较好地复位,构件未出现局部屈曲、破坏等不良现象。试验得到结构在地震作用下的加速度、位移及应变响应,分析了结构动力特性、层间位移角。结果表明:该结构有良好的抗震性能,能够满足高烈度地区抗震设防要求。

The seismic simulation table test of the new prefabricated light gauge steel hybrid structure was carried out.A1∶1 full-scale model with steel frame at the first storey and the cold-formed thin-walled hybrid structure at the second storey was used in the test.The two natural seismic waves and one artificial wave were input to test the X-direction or Y-direction seismic response.After loading,the structure was intact and could be well reset,and the components had no local buckling and damage.The acceleration,displacement and strain response of the structure under ground motion were obtained.The dynamic characteristics of the model and the displacement angle between layers were analyzed.The results showed that the structure had good seismic behavior and could meet the seismic fortification requirements in high-intensity areas.