Response of a reinforced concrete infilled-frame structure to removal of two adjacent columns

Sasani, Mehrdad

doi:10.1016/j.engstruct.2008.01.019

Cited by 202 publications

(83 citation statements)

References 6 publications

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“…Although the AEM is a relatively new method, previous and recent research by Myorca and Meguro (2004), Sasani (2008), and Lupoae and Bucur (2009) have all shown good correlation between numeric simulations using AEM and experimental results. Myorca and Meguro (2004) validated the AEM while studying the response of unreinforced masonry walls before and after being retrofitted with polypropylene bands.…”

Section: Applied Element Methodsmentioning

confidence: 99%

An Investigation of the Effectiveness of the Framing Systems in Steel Structures Subjected to Blast Loading

Coffield

Adeli

2014

Journal of Civil Engineering and Management

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Abstract. The effectiveness of different framing systems for three seismically designed steel frame structures subjected to blast loading is investigated. The three faming systems considered are: a moment resisting frame (MRF), a concentrically braced frame (CBF) and an eccentrically braced frame (EBF). The blast loads are assumed to be unconfined, free air burst detonated 15 ft (4.572 m) from one of the center columns. The structures are modeled and analyzed using the Applied Element Method, which allows the structure to be evaluated during and through failure. Failure modes are investigated through a plastic hinge analysis and member failure comparison. Also, a global response analysis is observed through comparison of roof deflections and accelerations. A conclusion of this research is that braced frames provide a higher level of resistance to the blast loading scenario investigated in this research. Both the CBF and EBF had a smaller number of failed members and plastic hinges compared to the MRF. They also had smaller roof deflection and acceleration. The CBF yielded the fewest number of plastic hinges but the EBF had a slightly fewer number of failed members.

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Section: Applied Element Methodsmentioning

confidence: 99%

An Investigation of the Effectiveness of the Framing Systems in Steel Structures Subjected to Blast Loading

Coffield

Adeli

2014

Journal of Civil Engineering and Management

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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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“…(11). As Sasani [17] adopted the beam elements with T-shaped or L-shaped sections to consider the enhancement of slabs on beams and achieved good agreement with test results, this kind of element section (Fig. 12) is also employed in the numerical analysis.…”

Section: Finite Element Modelmentioning

confidence: 99%

Parametric Analysis on Collapse-resistance Performance of Reinforced-concrete Frame with Specially Shaped Columns Under Loss of a Corner Column

Zhang¹,

Zhao²,

Wang³

et al. 2016

TOBCTJ

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A finite element model is verified accurate enough to simulate the static test of one reinforced-concrete frame with specially shaped columns subjected to the loss of a ground corner column. As the frame sustained loads primarily depending on the beam resisting mechanism in the test, four related parameters, namely the height of beam section, rebar ratio of beam, rebar ratio of slab and limb length of specially shaped column are chosen for parametric analyses respectively. It is indicated that the collapseresistance capacity remarkably increases with the increasing of the height of beam section and rebar ratio of the lower steel bars of beam. The increase of the rebar ratio of slab and upper steel bars of beam could enhance the stiffness and collapse-resistance capacity slightly. The lengthening of the limb of specially shaped column only increases the stiffness of the frame. According to an equivalent method, the rectangular column frame is obtained to compare collapse-resistance performance with the specially shaped column frame. It is concluded that the frame with specially shaped columns could maintain the equivalent collapse-resistance capacity while reduce the lateral stiffness compared with the rectangular column frame.

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Response of a reinforced concrete infilled-frame structure to removal of two adjacent columns

Cited by 202 publications

References 6 publications

An Investigation of the Effectiveness of the Framing Systems in Steel Structures Subjected to Blast Loading

An Investigation of the Effectiveness of the Framing Systems in Steel Structures Subjected to Blast Loading

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

Parametric Analysis on Collapse-resistance Performance of Reinforced-concrete Frame with Specially Shaped Columns Under Loss of a Corner Column

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