Abstract During the last two decades or so, many iconic buildings have been built in Dubai as a result of the rapid economic growth. To perform probabilistic seismic risk analysis of the system in the plastic zone of the tall building, a combined measure of earthquake damage needs to be defined.
A spectral acceleration at 0. For DMD-C3, the effects due to major aftershocks are noticeable for the majority of the cases, rather than a small fraction of the cases which was applicable to MaxISDR. A Magnitude—distance distribution of mainshocks and major aftershocks of the selected ground motion sequences.
By assigning relative importance or weight to each local damage index, a global damage index can be computed. Figure 3 F shows the response spectra of the unscaled mainshock ground motions that are selected based on the preceding method.
These dynamic characteristics are important for selecting ground motion records for use in non-linear dynamic analyses.
The weighing factor used for the energy term in DPA is calibrated through experimental work. For the considered case i. The primary lateral load-resistant element of the building is shear walls Figure 2.
The consideration of DMD as EDP facilitates the incorporation of cumulative damage modes into the seismic performance evaluation. The third mode is the sway mode in the long structural axis direction, and the corresponding vibration period and damping ratio are 0. The results clearly show that the effects of major aftershocks for DMD-C3 are significant, resulting in increased earthquake damage.
Peak drift demands from cloud analysis displaying storywise profiles of interstory drift ratios and maximum interstory drift ratio and spectral acceleration relationships: This focus is justified because the members in the plastic zone area are susceptible to severe damage due to cyclic loading Koduru and Haukaas, A Uniform hazard spectrum and conditional mean spectra for crustal, interface, and inslab events in Vancouver site class C; return period of 2, years.
The seismic performance of the reference buildings is evaluated using pseudo-static nonlinear push-over analysis as well as Incremental Dynamic Analysis IDA. A hysteretic material model includes the force—deformation curve from section analysis and a stiffness degradation factor of 0.
A Schematic view of the Heritage Court Tower building. The second mode is related to the torsional motion, and its vibration period and damping ratio are 0. The results highlight the widespread influence of the major aftershocks on the damage index. Finite element modeling of the structure was implemented using a fiber element, where the element cross-sections are discretized, and corresponding non-linear material properties of the core concrete, cover concrete, and reinforcing bars were assigned.
A set of ground motion records is selected by comparing response spectra of candidate records with the target spectra i. The aim of this research is to investigate and quantify the impact of the seismic design level on the structural performance and overall cost of contemporary RC Shear wall buildings in Dubai.
The number of available MS-AS sequences is ; among them, there are crustal earthquakes, interface earthquakes, and 69 inslab earthquakes.
Energy-based and combined damage indices. Figure 5 A shows results for the interstory drift ratio at the ninth story, while Figure 5 B shows results for the Mehanny—Deierlein damage index for gravity column at the third story.
Seismic Hazard for Vancouver and Ground Motion Selection The development of seismic damage prediction models requires a series of non-linear dynamic analyses of a structural model subjected to a set of ground motion records, which reflect the regional seismic hazard of interest.Performance of RC Shear Wall Buildings in Dubai, UAE Furthermore, the impact of the seismicity level on construction material cost is investigated for.
The evaluation is undertaken within a performance-based earthquake engineering framework by considering regional seismicity and site-specific ground motion selection. in this article, seismic performance of the story RC shear wall building located in Vancouver, BC, Canada, was investigated.
and their impact on the seismic. A Master of Science thesis in Civil Engineering by Nader Essam Aly entitled, "Effect of Diverse Seismic Hazard Estimates on Performance and Overall Cost of RC Shear Wall Buildings in Dubai, UAE," submitted in January Thesis advisor is Dr.
Mohammad AlHamaydeh. Soft and hard copy available. The objective of this paper is to investigate the impact of the seismicity hazard level on the performance, construction, repair and downtime costs of reinforced concrete (RC) shear wall buildings in Dubai.
EFFECT OF DIVERSE SEISMIC HAZARD ESTIMATES ON PERFORMANCE AND OVERALL COST OF RC SHEAR WALL BUILDINGS IN DUBAI, UAE by Nader Essam Aly A Thesis Presented to the Faculty of the. The objective of this paper is to investigate the impact of the seismicity hazard level on the performance, construction, repair, and downtime costs of RC shear wall buildings in Dubai.
In this regard, six RC shear wall buildings were designed and detailed following the International Building Code (IBC ) standards.Download