Assessment of modal pushover analysis and conventional nonlinear static procedure with load distributions of federal emergency management agency for high-rise buildings

2008 ◽  
pp. n/a-n/a ◽  
Author(s):  
Mehdi Poursha ◽  
Faramarz Khoshnoudian ◽  
A. S. Moghadam
Keyword(s):  
Emergency Management ◽  
Pushover Analysis ◽  
Federal Emergency Management Agency ◽  
Modal Pushover Analysis ◽  
Management Agency ◽  
High Rise ◽  
Load Distributions ◽  
Nonlinear Static Procedure ◽  
Nonlinear Static ◽  
Modal Pushover

scholarly journals Evaluasi Kinerja Struktur Gedung Rumah Sakit Paru Sumatera Barat dengan Pushover Analysis

2019 ◽  
pp. 1-9
Author(s):  
Nugrafindo Yanto ◽  
Rafki Imani ◽  
Zulva Andika
Keyword(s):  
Emergency Management ◽  
Pushover Analysis ◽  
Federal Emergency Management Agency ◽  
Life Safety ◽  
Target Displacement ◽  
Management Agency ◽  
Fema 356 ◽  
Immediate Occupancy

Sumatera Barat merupakan daerah yang rawan terhadap gempa bumi. Bencana gempa menyebabkan terjadinya kerusakan struktur bangunan. Saat terjadi gempa, diharapkan bangunan mampu menerima gaya gempa pada level tertentu tanpa terjadi kerusakan yang signifikan pada strukturnya atau apabila struktur bangunan harus mengalami keruntuhan mampu memberikan perilaku nonlinier pada kondisi pasca-elastik sehingga tingkat keamanan bangunan terhadap gempa dan keselamatan jiwa penghuninya lebih terjamin. Melihat dari fenomena gempa bumi yang telah terjadi belakangan ini, maka sangat perlu diperiksa atau dianalisis kelayakan dari Gedung Rumah Sakit Paru Sumatera Barat. Metode evaluasi yang digunakan adalah analisis statik non-linier (Pushover). Beban lateral yang digunakan merupakan hasil dari anaisis statik ekuivalen. Level kinerja ditentukan dengan Target Perpindahan sesuai Federal Emergency Management Agency. Hasil penelitian menunjukkan bahwa Tingkat kinerja Struktur Rumah Sakit Paru Sumatera Barat tersebut adalah dalam kondisi IO-LS (Immediate occupancy–Life Safety) yang artinya tidak ada kerusakan pada komponen struktur dan struktur bisa digunakan, hal ini berdasarkan target displacement FEMA 356, dan pola keruntuhan pada Struktur Rumah Sakit Paru Sumatera Barat, elemen struktur yang lemah (terjadisendi plastis) adalah elemen balok.

scholarly journals Evaluation of Modal and FEMA Pushover Procedures Using Strong-Motion Records of Buildings

2005 ◽  
Vol 21 (3) ◽  
pp. 653-684 ◽  
Author(s):  
Rakesh K. Goel
Keyword(s):  
Pushover Analysis ◽  
Strong Motion ◽  
Northridge Earthquake ◽  
Reasonable Estimate ◽  
Modal Pushover Analysis ◽  
Higher Mode Effects ◽  
Mode Effects ◽  
Nonlinear Static Procedure ◽  
Nonlinear Static ◽  
Fema 356

The objective of this investigation is to evaluate the FEMA-356 Nonlinear Static Procedure (NSP) and a recently developed Modal Pushover Analysis (MPA) procedure using recorded motions of four buildings that were damaged during the 1994 Northridge earthquake. For this purpose, displacements and drifts from the FEMA-356 NSP and the MPA procedures are compared with the values “derived” from the recorded motions. It is found that the FEMA-356 NSP typically underestimates the drifts in upper stories and overestimates them in lower stories when compared to the recorded motions. Among the four FEMA-356 distributions considered, the “Uniform” distribution led to the most excessive underestimation or overestimation indicating that the need to carefully reevaluate the usefulness of this distribution in the FEMA-356 NSP. Furthermore, FEMA-356 distributions failed to provide accurate estimates of story drifts for a building that satisfied the FEMA-356 criterion for detecting the presence of higher mode effects indicating the need to carefully re-examine this criterion. The MPA procedure, in general, provides estimates of the response that are much closer to the values from the recorded motion compared to those from the FEMA-356 NSP. In particular, the MPA procedure, unlike the FEMA-356 NSP, is able to capture the effects of higher modes. For a building that exhibits dominant effects of “soft” first story, however, neither the MPA procedure nor the FEMA-356 NSP led to reasonable estimate of the response.

scholarly journals SEISMIC EVALUATION AND RETROFIT ON AN EXISTING HOSPITAL BUILDING

2020 ◽  
Vol 24 (06) ◽  
pp. 1-21
Author(s):  
Husain K. Jarallah ◽  
◽  
D. K. Paul ◽  
Yogendra Singh ◽  
◽  
...  
Keyword(s):  
Emergency Management ◽  
Pushover Analysis ◽  
Federal Emergency Management Agency ◽  
Appreciable Effect ◽  
Management Agency ◽  
Performance Point ◽  
Seismic Force ◽  
Force Moment ◽  
Hospital Building ◽  
Nonlinear Pushover Analysis

The nonlinear pushover analysis was used to evaluate an existing 8-storey reinforced concrete framed hospital building under seismic force and presented in this manuscript. The ‘Guru Teg Bahadur Hospital' is one of the important hospitals at Delhi-India, it was selected for this research. The three-dimensional frame model was used to model the building with a fixed base. The beams and columns were modeled by using three-dimension line frame elements with the centre lines joined at nodes. Diagonal strut elements were used to model the brick masonry infills. The slabs were considered as rigid diaphragms. The plastic hinge rotation capacities as per Federal Emergency Management Agency 356 (FEMA 356) with Performance Levels were adopted in this study, considering the axial force-moment and shear force-moment interactions. The nonlinear pushover analysis of the selected building was done with infills and it was observed that the infills (due to their small number in the considered building) do not make any appreciable effect on the performance level, except their failure at an early stage. The Capacity Spectrum Method (CSM) and Displacement Coefficient Method (DCM) were used to estimate the performance point of the building. The values of various coefficients as per Federal Emergency Management Agency 440 (FEMA 440) were adopted. The DCM was observed to give slightly higher target displacements, as compared to CSM. It was observed in the nonlinear pushover analysis that the unreinforced masonry (URM) infills collapse before the performance point of the building for the Maximum Considered Earthquake (MCE). As the intervention inside the functioning hospital is extremely difficult, it was explored whether it is possible to safeguard the infills by stiffening the building by providing external buttresses. Two cases of retrofitting schemes with 1.2m wide and 3m wide buttresses in transverse direction were used and analysed. It was found that this is not a practicable approach, as the infills collapse even with 3m wide buttresses.

Applicability of Modal Pushover Analysis on Bridges

2011 ◽  
Vol 255-260 ◽  
pp. 806-810
Author(s):  
Biao Wei ◽  
Qing Yuan Zeng ◽  
Wei An Liu
Keyword(s):  
Seismic Analysis ◽  
Pushover Analysis ◽  
Time History ◽  
Seismic Demand ◽  
Seismic Demands ◽  
Modal Pushover Analysis ◽  
History Analysis ◽  
Bridge Structures ◽  
Scope Of Application ◽  
Modal Pushover

Taking one irregular continuous bridge as an example, modal pushover analysis (MPA) has been conducted to judge whether it would be applicable for seismic analysis of irregular bridge structures. The bridge’s seismic demand in the transverse direction has been determined through two different methods, inelastic time history analysis (ITHA) and MPA respectively. The comparison between those two results indicates that MPA would be suitable only for bridges under elastic or slightly damaged state. Finally, some modifications are used to improve the MPA’s scope of application, and the results illustrate that the adapted MPA will be able to estimate bridges’ seismic demands to some extent.

Enhancing Community Disaster Resilience Through Mass Sporting Events

2011 ◽  
Vol 5 (4) ◽  
pp. 310-315 ◽  
Author(s):  
Danielle M. McCarthy ◽  
George T. Chiampas ◽  
Sanjeev Malik ◽  
Kendra Cole ◽  
Patricia Lindeman ◽  
...  
Keyword(s):  
Emergency Management ◽  
Disaster Preparedness ◽  
Disaster Response ◽  
Federal Emergency Management Agency ◽  
Disaster Resilience ◽  
Sporting Events ◽  
Practical Application ◽  
Complex Action ◽  
Management Agency ◽  
Communication And Coordination

ABSTRACTDisaster response requires rapid, complex action by multiple agencies that may rarely interact during nondisaster periods. Failures in communication and coordination between agencies have been pitfalls in the advancement of disaster preparedness. Recommendations of the Federal Emergency Management Agency address these needs and demonstrate commitment to successful disaster management, but they are challenging for communities to ensure. In this article we describe the application of Federal Emergency Management Agency guidelines to the 2008 and 2009 Chicago Marathon and discuss the details of our implementation strategy with a focus on optimizing communication. We believe that it is possible to enhance community disaster preparedness through practical application during mass sporting events.(Disaster Med Public Health Preparedness. 2011;5:310–315)

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