装配式高层混凝土空间网格盒式结构振动台试验研究

为研究装配式高层空间网格盒式结构的地震响应和破坏机理，设计并制作一栋15层55.5m高装配式盒式结构的1/8缩尺模型，并通过振动台试验输入6个水准共21个地震工况，研究高层装配式盒式结构在不同输入地震荷载下的宏观响应、加速度响应、位移响应。通过试验表明：高层装配式盒式结构在地震下有较好的结构性能，其在地震下位移呈现出剪切型特点，后期结构破坏时由于配筋及装配式施工带来的误差，使得最大位移出现位置上移，结构破坏集中于结构中上部分。整体结构的破坏主要为非主体结构构件破坏，破坏主要集中于层间梁两端，结构的完整性得以保存。即便在极大的输入地震响应下(PGA=1.0g)，结构主体部分基本完好，仅个别层超过结构倒塌极限产生破坏，结构在地震下的耗能能力及安全性较好。

Shaking table test of high-rise precast concrete cassette structure

In order to study the seismic responses and the fail modes of high-rise precast cassette structures, a shake table test was conducted on a fifteen-storey cassette structure with 55.5 m height and 1/8 scale. Twenty-one time-history records in six levels were used in the test and the overall performance, accelerate response, displacement response were studied. The results showed that the novel precast high-rise cassette performed well in the test. Its deformation curve was a shear type, and the failure concentrated in the upper middle of the structure eventually due to the flaw of the cast-in-place process. Most of the failure concentrated in the inter-layer beams, without affecting the main structure secure. Even under a huge seismic record, the structure can still maintain its structural integrity, showing good energy dissipation capacity and good structural safety.