Comparison Of Seismic Design And Post-anchoring Of Non-Structural Members Of Buildings Between China,The USA And Europe

With the development of economy,the cost of non-structural components accounts for an increasing proportion in the construction investment.The human casualties and huge property losses caused by the destruction of non-structural components during the earthquake caused researchers to pay more attention to the seismic study of non-structural components.First of all,it was compared that the differences about seismic design concepts and design methods of non-structural components in China,the United States,and Europe by reading a large number of documents,collecting relevant regulations and industry data,and using examples to compare the equivalent lateral forces of countries.Secondly,it was summarized that the design requirements and design methods for post-anchored seismic of non-structural members,comparing the similarities and differences in the design methods used in various countries' specifications,and further introducing the seismic bearing capacity verification systems and bolt classification status of seismic anchors in various countries.Finally,using the method of numerical simulation,SAP2000 software was used to conduct elasto-plastic analysis of the four-story frame and fifteen-layer frame-shear structure,and the acceleration response time curve of each floor under the corresponding seismic wave was obtained.Taking the floor acceleration as the input load,the influence of the seismic damping effect on the seismic performance of the suspended ceiling was studied.At the same time,the influence of the stiffness on the seismic response of non-structural members was studied by using flexible and rigid cantilever rods as examples.Base on this,the conclusions as follow:(1)When seismic design of non-structural components was conducted in the specifications of China,the United States,and Europe,the horizontal seismic force results calculated by the equivalent lateral force method were quite different in each country,and the design value gap of individual components was about 8 times.(2)China's non-structural component post-anchor related specifications do not consider the displacement limit of the anchor bolt,which makes it difficult to select the anchor bolts for the occasion with higher requirements.(3)The floor acceleration increases with the height of the floor.The acceleration of the top floor was approximately 2-4 times the acceleration of the floor,and the floor acceleration of the same floor under different seismic waves also has a large difference.(4)When the shock-absorbing shaped edge was set,the peak value of the acceleration and displacement curve of the suspended ceiling was obviously decreased.It can be seen that the shock-absorbing profile edge greatly increases the seismic performance of the ceiling.(5)The acceleration peak of the cantilever rod increased with the increase of the floor,and the acceleration of the top floor floor was approximately 4-5 times of the bottom floor.For a rigid cantilever rod of 0.3m,the natural vibration period and the natural vibration period of the building were very different,and the corresponding acceleration peak was also small.It was about 0.01 for the seismic acceleration peak of the flexible cantilever beam on the same floor.It is necessary to distinguish the rigidity or flexible of the components when designing.