Numerical Simulation of Demolition of Perna Seca Hospital Using the Applied Element Method

Helmy, Huda; Elfouly, Ayman; Salem, Hamed

doi:10.1061/9780784412367.026

Cited by 10 publications

(11 citation statements)

References 7 publications

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“…Literature has shown that the Applied Element Method (AEM) theory gives good estimations for large displacements and deformations of structures undergoing collapse (Galal and El-Sawy 2010;Tagel-Din (2000, 2001); Sasani and Sagiroglu 2008;Salem et al 2011;Park et al 2009;Helmy et al 2009;Sasani 2008;Wibowo et al 2009;Tagel-Din and Rahman 2004;Tagel-Din and Meguro 2000a, b;Salem 2011). AEM is a modeling method adopting the concept of discrete cracking.…”

Section: Applied Element Methods (Aem)mentioning

confidence: 96%

“…Fully nonlinear dynamic analysis for the structure due to removal of a primary vertical element is carried out using the Applied Element Method (AEM). AEM is based on discrete crack approach and is capable of following the structure's behavior to its total collapse (Galal and El-Sawy 2010;Sasani and Sagiroglu 2008;Salem et al 2011;Park et al 2009;Helmy et al 2009;Sasani 2008;Wibowo et al 2009;Tagel-Din and Rahman 2004;Salem 2011).…”

Section: Introductionmentioning

confidence: 98%

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Infilled masonry walls contribution in mitigating progressive collapse of multistory reinforced concrete structures according to UFC guidelines

Helmy¹,

hadhoud

Mourad

2015

Int J Adv Struct Eng

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A structure is subjected to progressive collapse when an element fails, resulting in failure of adjoining structural elements which, in their turn, cause further structural failure leading eventually to partial or total collapse. The failure of a primary vertical support might occur due to extreme loadings such as bomb explosion in a terrorist attack, gas explosion and huge impact of a car in the parking area. Different guidelines such as the General Services Administration (GSA 2003) and the Unified Facilities Criteria (UFC 2009) addressed the structural progressive collapse due to the sudden loss of a main vertical support. In the current study, a progressive collapse assessment according to the UFC guidelines is carried out for a typical ten-story reinforced concrete framed structure designed according to codes [(ACI 318-08) and (ASCE 7-10)] for minimum design loads for buildings and other structures. Fully nonlinear dynamic analysis for the structure was carried out using Applied Element Method (AEM). The investigated cases included the removal of a corner column, an edge column, an edge shear wall, internal columns and internal shear wall. The numerical analysis showed that simplification of the problem into 3D bare frames would lead to uneconomical design. It was found for the studied case that, the infilled masonry walls have a valuable contribution in mitigating progressive collapse of the reinforced concrete framed structures. Neglecting these walls would lead to uneconomical design.

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Section: Applied Element Methods (Aem)mentioning

confidence: 96%

Section: Introductionmentioning

confidence: 98%

Infilled masonry walls contribution in mitigating progressive collapse of multistory reinforced concrete structures according to UFC guidelines

Helmy¹,

hadhoud

Mourad

2015

Int J Adv Struct Eng

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“…In this study, the Extreme Loading for Structures (ELS) software (www.appliedscienceint.com), which is based on the AEM, is used. The AEM was proven to be capable of following the deformations of a structure subjected to extreme loads to its total collapse (Sasani and Sagiroglu 2008;Sasani 2008;Park et al 2009;Wibowo et al 2009;Galal and ElSawy 2010;Salem et al 2011;Helmy et al 2009;Helmy et al 2012;Helmy et al 2013;Sasani 2008;Salem 2011;Salem and Helmy 2014 ). Therefore, and since the goal of the current study is to investigate the collapsing behavior of Utatsu Ohashi bridge under severe loads resulting from tsunami action, it was decided that the AEM would be the most appropriate numerical tool for such investigation.…”

Section: The Applied Element Methods (Aem)mentioning

confidence: 99%

“…Therefore, in the current study, the numerical analysis was carried out using the Applied Element Method. The Applied Element Method is based on discrete crack approach and is capable of following the structure's behavior to its total collapse Meguro and Tagel-Din 2001;Tagel-Din 2002;Meguro and Tagel-Din 2003;Tagel-Din and Rahman 2004;Galal and ElSawy 2010;Sasani and Asgitoglu 2008;Salem et al 2011;Park et al 2009;Helmy et al 2009;Helmy et al 2012;Helmy et al 2013;Sasani 2008;Wibowo 2009;Salem 2011;Salem and Helmy 2014) …”

Section: Introductionmentioning

confidence: 99%

Collapse Analysis of Utatsu Ohashi Bridge Damaged by Tohuku Tsunami using Applied Element Method

Salem

Mohssen²,

Kosa

et al. 2014

ACT

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The 2011 Tohuku tsunami on the east coast of Japan resulted in killing more than 15,000 people and missing more than 2,500 people, washing away of more than 250 coastal bridges and loss of US$235 billion. Collapse of coastal bridges due to tsunami impact represents a huge obstacle for rescue works. Therefore, in the current study, the collapse of Utatsu Ohashi bridge is numerically studied. The analysis is carried out using the Applied element Method due to its advantages of simulating structural progressive collapse. The AEM is a discrete crack approach, in which elements can be separated, fall and collide to other elements in a fully nonlinear dynamic scheme of computations. The Utatsu Ohashi bridge collapse was successfully simulated using AEM. It was numerically found that the amount of trapped air between deck girders during tsunami had a significant effect on the behavior of the bridge. This is attributed to the buoyant force accompanied with the trapped air. A simplified method for estimating trapped air was assumed and proved to give reasonable results compared to reality. Three different solution examples for mitigating collapse of similar existing bridges were introduced and applied to Utatsu Ohashi bridge case and found to be efficient for preventing collapse.

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“…AEM is a discrete crack approach in which two adjacent elements may have a discrete crack along their common faces, may be separated from each other, and may come into contact again or make contact with other elements. Therefore, AEM is capable of following the structure's behavior up to its total collapse …”

Section: Introductionmentioning

confidence: 99%

Progressive collapse assessment of medium-rise reinforced concrete flat slab structures

2017

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The progressive collapse resistance of a medium‐rise multistory reinforced concrete flat slab structure is evaluated numerically using the applied element method. The case study is designed according to ACI 318 and its progressive collapse is assessed in accordance with the Unified Facilities Criteria (UFC) guidelines. The numerical results show that the case study considered generally satisfies the limits of the UFC guidelines except for the case of near‐corner interior column loss at the 10th floor and edge shear wall loss at ground, 5th, 8th, and 10th floors. The removal of the edge shear walls on the higher floors caused a partial collapse.

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Numerical Simulation of Demolition of Perna Seca Hospital Using the Applied Element Method

Cited by 10 publications

References 7 publications

Infilled masonry walls contribution in mitigating progressive collapse of multistory reinforced concrete structures according to UFC guidelines

Infilled masonry walls contribution in mitigating progressive collapse of multistory reinforced concrete structures according to UFC guidelines

Collapse Analysis of Utatsu Ohashi Bridge Damaged by Tohuku Tsunami using Applied Element Method

Progressive collapse assessment of medium-rise reinforced concrete flat slab structures

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