Fragility assessment of high‐rise reinforced concrete buildings considering the effects of shear wall contributions

Abstract

The effect of shear wall configurations on seismic responses of high-rise RC buildings is investigated in this paper using fragility analysis method. Four lower high-rise RC buildings that have the same plan dimensions and height but are different in configurations in lateral force resisting systems, were firstly designed following the standard code procedure. To consider uncertainties in earthquake motions, 16 real ground motion pairs were selected and scaled, then applied orthogonally to the four RC building models during the Incremental Dynamic Analysis (IDA). Fragility relationships were therefore derived based on the IDA results for the three limit states including slight damage, moderate damage and collapse to show the probabilistic comparison of seismic responses among the four buildings in both x and y-directions. It was observed that generally adding shear walls will improve buildings' seismic performance at all limit states. However, shear wall configuration also plays a significant role in seismic behavior of the lower high-rise regular RC buildings' and internal shear walls are generally more effective than external shear walls in improving building's seismic resistance.Erbil, Kurdistan Region, Iraq. His research interest is structural analysis and design of high-rise building.

Numerical study of the static and dynamic characteristics of reinforced concrete cassette structures for high‐rise buildings

“…The maximum response of the structure in each step of scaling is then extracted to draw the IDA diagrams. After analyzing the groups of IDA curves using statistical methods and then comparing the results with hazard analysis limits, the dynamic structural behavior, capacity, and limit state can be known …”

“…After analyzing the groups of IDA curves using statistical methods and then comparing the results with hazard analysis limits, the dynamic structural behavior, capacity, and limit state can be known. [7,27,28] FIGURE 37 Concrete usage of three structures at different heights. OSSFS: open-web sandwich slab frame-core-tube structure FIGURE 38 Incremental dynamic analysis results of a cassette structure.…”

Probabilistic assessment of plan-asymmetric structures under the near-fault pulse-like events considering soil–structure interaction

“…In recent years, the extensive tendency of researchers is oriented to the IDA. Now, the IDA is a traditional tool for the seismic assessment of different structures (Emami and Halabian, 2017; Sadraddin et al, 2016). The IDA is a parametric analysis method to determine the seismic dynamic capacity of structures in different levels of performance.…”

The developments of the analytical fragility methods in seismic risk assessment – A review

“…It was concluded that the FBS reduced significantly the seismic vulnerability of the building because the FBS lengthens the first mode period, which in return reduces the earthquake induced forces. Additionally, Sadraddin et al (2016) investigated the effect of shear walls' distributions in high-rise buildings on their seismic performance. Four typical twelve story high-rise buildings with the same layout configurations and different shear walls' distributions were designed and analyzed.…”