| Summary: | 碩士 === 國立臺灣大學 === 土木工程學研究所 === 106 === Accoding the reconnaissance of building damage due to earthquake, most low-rise street buildings were damaged concentrately on the first floor parallel to the arcade. The reason is that the walls are with more openings along this direction. In order to seismic design and retrofit buildings economically and efficiently, the stiffness and the strength of the walls with openings should be considered.
Hance, a prediction model for lateral load and displacement curves of reinforced concrete wall with opening is proposed in this thesis. With it, engineers can conduct nonlinear push-over analysis included the seismic behavior of shear wall with opening. The results become more accurate. Therefore, the economic efficiency of seismic design and retroffting is improved, and the damage of RC wall with opening can be controlled.
Per the ACI 318-14, the code suggestes that the extra horizontal and vertical reinforcement is required around the openings. According to AIJ (2010), a propsed strength prediction formula is provided, considering the effects of the longitudinal reinforcement and the exterior concrete of the boundary elements. However the requirement of ACI 318-14 is a qualitative description and the prediction meodel of AIJ (2010) is an empirical formula, lacking of clear physical meaning.
The proposed model in this thesis is base on the force transfer mechanism, expected to describe the strength contribution of extra reinforcement near the openings and the boundary element more clearly. Also, the amount, location and detailing of reinforcement can be well designed with this model. The prediction results are reasonable and conservative comparing with the experimental data from literature.
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