A Gui Framework for the Development of Fragility Curves for a Low-Rise & Medium-Rise Buildings
B. Uday Kumar1, Gandla Nanabala Sreekanth2
1B.Uday Kumar, M. Tech. Student, Department of Structural Engineering, Rajeev Gandhi Memorial College of Engineering and Technology, Nandyala (Andhra Pradesh), India.
2Gandla Nanabala Sreekanth, Assistant professor, Department of Civil Engineering, Rajeev Gandhi Memorial College of Engineering and Technology, Nandyala (Andhra Pradesh), India.
Manuscript received on 18 June 2019 | Revised Manuscript received on 25 June 2019 | Manuscript published on 30 June 2019 | PP: 1146-1152 | Volume-8 Issue-5, June 2019 | Retrieval Number: E7384068519/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: “Earthquake’s do kill the people.” It is a clear misconception. Earthquakes never kill, but it is always the constructional failure which makes the situation worse and leads to the loss of life. Earthquake’s root to a huge economic loss apart from the tortuous pain of loss of lives. This calls for the need of seismic strengthening as the circumgyrations are inevitable. Seismic strengthening improves the structural safety but does not reduce the seismic response. Seismic strengthening is a pre-disaster assessment. But the need to study the observance of the existing buildings against the circumgyrations lead to a stew of post-disaster mitigation with pre-disaster planning known as Fragility analysis. Fragility analysis refers to the partial assessment of vulnerability of the buildings subjected to earthquake motions. In this study, the fragility curves are developed with the aid of Incremental dynamic analysis or Nonlinear dynamic analysis conducted on the model. The curves explain the conditional anticipation which outstrip adefinite limit of failure and therefore guesstimate the susceptibility of the structure. Fragility curves are very much useful in seismic loss estimation studies in earth quake prone zones. Two structural models four storey & six storey 3D open frame buildings were considered.The structural models are designed for dead, live and seismic loads according to the Indian Code. A set of 5 Farfield ground motions scaled from 0.1 to 1 with an increment of 0.1 are used in the Incremental dynamic analysis using SAAP2000. Four performance levels, namely Fully Operational (FO), Immediate Occupancy (IO), Life Safety (LS) and Collapse Prevention (CP) were considered and monitored in the analysis using MATLAB. The objective of the study is to develop the fragility curves for a low rise (G+3) and medium rise (G+5) building models using the Graphical User Interface (GUI) in MATLABR2016a considering the four selected performance levels. The study depicts the use of Hybrid method (combination of Expertise & analytical methods) for the development of Fragility Curves.
Keywords: Seismic Strengthening, Pre-Disaster Assessment, Post-Disaster Mitigation, Fragility Analysis, Vulnerability Assessment, Fragility Curves, Incremental Dynamic Analysis (IDA), Non-Linear Dynamic Analysis, Graphical User Interface (GUI), SAAP2000, Matlabr2016a.
Scope of the Article: Building Energy