Seismic Capacity Assessment of Existing RC Building by Using Pushover Analysis

Mohammed Ismaeil


The infrastructure, existing in Sudan, is mostly not structured or designed to resist seismic forces accordingly. The study investigated the seismic damage of a 5 storey existing reinforced concrete building in Khartoum, Sudan. Three performance levels were considered in the study, which included immediate occupancy, life safety, and collapse prevention. The gravity push was carried out using force control method and lateral push with displacement control, using SAP2000. Pushover analysis produces push curve, consisting of capacity spectrum, demand spectrum, and performance point. It showed the performance level of building components along with maximum base shear carrying capacity. It has been observed that demand curve intersected the capacity curve between the points B and C at the X direction that is life safety level; and between the points B and C at the Y direction that is life safety and collapse prevention level. Therefore, some building elements are needed to be strengthened.


Pushover Analysis; Demand Curve; Capacity Curve; Plastic Hinge; SAP2000; Performance Point; Sudan.


Wahab, A., Abu Baker, Yahia EA Mohamedzein, and Gamal Abdalla. "Suggested provision for Eathquake Resistant Design of Structure for the Sudan." (1999).

ATC, Seismic. Evaluation and retrofit of concrete buildings, Rep. ATC-40, Applied Technology Council, Redwood City, California. 1996.

FEMA. NEHRP Guidelines for the Seismic Rehabilitation of Buildings. Developed by the Building Seismic Safety Council for the Federal Emergency Management Agency (Report No. FEMA 273), Washington, D.C. 1997.

Ismaeil, Mohammed, Mohamed Sobaih, and Adel Akl. “Seismic Capacity Assessment of Existing RC Buildings in the Sudan by Using Pushover Analysis.” Open Journal of Civil Engineering 05, no. 02 (2015): 154–174. doi:10.4236/ojce.2015.52016.

Sobaih, Mohamed, and Ahmed Mousa. “Evaluation of Regular Multistory Buildings Using IBC2009 Code and ESEE Regulations by Pushover Analysis Method.” Open Journal of Civil Engineering 06, no. 04 (2016): 595–617. doi:10.4236/ojce.2016.64049.

Belejo RB, Bhatt C. Comparison of different computer programs to predict the seismic performance of SPEAR building by means of Pushover Analysis the SPEAR building by means of Pushover Analysis. Instituto Superior Técnico, Lisbon, Portugal. 2013.

Ashraf Habibullah, S. E., and S. E. Stephen Pyle. Practical three-dimensional nonlinear static pushover analysis. Structure magazine, winter. 1998.

Peter K, Badoux M. Application of the capacity spectrum method to RC buildings with bearing walls. In Proceedings of 12 World Conference on Earthquake Engineering, Auckland, New Zealand: paper 2000 (No. 0609).

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DOI: 10.28991/cej-03091136


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