装配式高层混凝土空间网格盒式结构振动台试验研究  

Shaking table test of high-rise precast concrete cassette structure

作　　者：陈志鹏[1,2] 冯德成 马克俭[3] 吴刚[1,2] Chen Zhipeng;Feng Decheng;Ma Kejian;Wu Gang(Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education,Southeast University,Nanjing 211189,China;National Prestressing Engineering Research Center,Southeast University,Nanjing 211189,China;Space Structures Research Center,Guizhou University,Guiyang 550003,China)

机构地区：[1]东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京211189 [2]东南大学国家预应力工程技术研究中心,江苏南京211189 [3]贵州大学空间结构研究中心,贵州贵阳550003

出　　处：《土木工程学报》2020年第12期44-53,共10页China Civil Engineering Journal

基　　金：国家自然科学基金重点项目(51838004);国家自然科学基金杰出青年科学基金(51525801);国家自然科学基金青年科学基金(51708106)。

摘　　要：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。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.

关 键 词：盒式结构 装配式 振动台试验 破坏模式 结构响应 

分 类 号：TU375[建筑科学—结构工程]