Seismic design analysis and performance testing of a high-rise timber hybrid structure
Timber-concrete hybrid structures are widely used in multi-story and high-rise timber buildings.However,there remains a need to investigate the overall seismic performance of such structures and dynamic characteristics of their building floors.This paper,using the medical technology building of Jiangsu Provincial Rehabilitation Hospital as a case study,employed both the response spectrum method and elastic time-history analysis method to evaluate the seismic performance of the timber hybrid structure.Additionally,it conducted in-situ testing to analyze the mechanical properties,dynamic characteristics,and human-induced vibrations of the localized cross-laminated timber(CLT)floor.The results showed that:the structure met the seismic resistance requirements.The load-displacement relationship of the CLT floor showed a two-fold curve.When conducting a theoretical calculation of deflection and stress,it was recommended to consider the slab as simply supported at both ends.The average vertical self-oscillation frequency of the CLT floor was about 15.96 Hz,which met the requirements of building floor limit value.However,the floor experienced significant peak acceleration under the conditions of single-person walking,single-person trotting,and multiple-person random vibrations.Thus,it was recommended to increase the cast-in-place building surface layer to enhance the comfort of pure CLT floors.In summary,timber hybrid structures can meet the seismic requirements,but attention should be given to comfort construction measures for lightweight floors.
国家科技期刊平台
NSTL
万方数据
