| dc.description.abstract | When buildings are design under the earthquake force , the fundamental period and design earthquake force with the displacement limit are the important factors in design . The concept of deciding these factors over the world’s codes are almost same , but the regulation have some different . Th parts of this research is to introduce the different of the three factors in the regulations over the world . To the result of design earthquake force , where the result shows that the design earthquake force in Taiwan’s code is bigger than the other codes . In the displacement limit , the regulations over the world are also different . In early codes , it limits the elastic displacement of relative displacement angle . In recent code , part of the codes limits the limit displacement of relative displacement angle , part of the codes still limits the elastic displacement of relative displacement angle , and part of the codes limits two of the restriction .
In high-rise building structure of reinforced concrete , shear walls can provide the effective shear capacity of structure and reduce the horizontal deformation of structure . Hence , the dual system of reinforced concrete structure with shear wall is one of the most effective building structures in resisting earthquake . There are no appropriate fundamental period formula of shear wall and moment resisting frame dual system in modern building seismic design code , and in practice , it generally uses the fundamental period formula of other structures .
Then , the other part of this research is to establish the fundamental period formula of shear wall and moment resisting frame dual system . By using the modal analysis and collecting the real data , respectively finding the fundamental period formulas of reinforced concrete moment resisting frame and shear wall frame , and combining to the fundamental period formula of dual system by theory . With adding the coefficient k , which is the strength ratio of the moment resisting frame of the whole structure , in dual system formula , it can contol the magnitude of resisting horizontal force of reinforced concrete moment resisting frame and shear wall frame structure to make the designer can estimate the value of the fundamental period more accurately . Finally , by using the concept of Taiwan’s code , redusing the formula of 0.7 times , which is approximately
1/1.4 times where 1.4 is the restriction in the code , the fundamental period getting by other methods can not exceed 1.4 times of the fundamental period getting by codes . Comparing by the recommend formula , dynamic analysis results and real case analysis result , it finds that the recommend formula is more suitable than Taiwan’s formula in dual system .
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