Analysis of Seismic Energy Response and Distribution of RC Frame Structures

Abstract eng:
The paper reports the study on seismic energy response and distribution of a multi-story RC frame structure based on energy equation and nonlinear time history response analysis. The analysis used 1940 El Centro earthquake acceleration record as the input to the structural model. The energy response was analyzed in energy components. The component of strain energy was considered as the target of the study as it was the key component reflecting the damage extent of the structure. The strain energy of whole structure and its distribution in each story and among structural elements were further investigated and the relationship between the ductility of structural elements and their corresponding strain energy were examined to evaluate the seismic performance of the structural model. The energy analysis herein provides useful information and becomes a new way to understand the structural damage and deformation ductility in respect of strain energy. It also indicates the feasibility of its application in structural seismic performance design.

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