Strengthening of precast RC beam-column connections for progressive collapse mitigation using bolted steel plates

Al-Salloum, Yousef; Alrubaidi, Mohammed; Elsanadedy, Hussein M.; Almusallam, Tarek; Iqbal, Rizwan A.

doi:10.1016/j.engstruct.2018.02.009

Cited by 68 publications

(24 citation statements)

References 21 publications

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“…Within this latter group, diverse numerical and experimental studies have analysed the structural response of buildings subjected to column removal as recommended in most current codes [13][14][15]. Although these studies included the possible causes of column failures, including internal [16][17][18][19][20][21][22][23], external [2,16,[24][25][26][27][28][29][30][31] and corner columns (e.g. [32][33][34]), few studies have been done on corner column failures, even though these are the most vulnerable columns in the structure (e.g.…”

Section: Some Events With a High Impact Amongst The Engineering Commumentioning

confidence: 99%

Dynamic performance of a real-scale reinforced concrete building test under a corner-column failure scenario

Adam

Buitrago

Bertolesi

et al. 2020

Engineering Structures

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Section: Some Events With a High Impact Amongst The Engineering Commumentioning

confidence: 99%

Dynamic performance of a real-scale reinforced concrete building test under a corner-column failure scenario

Adam

Buitrago

Bertolesi

et al. 2020

Engineering Structures

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“…They concluded that it is essential to provide practical recommendations for enhancing the structural robustness of structural configurations of the form considered in this study. Some studies scope on the precast connection's behavior due to progressive collapse, Al-Salloum et al [11], studied how to strengthen the precast connections using bolted steel plates and Qian et al [12], studied the resistance of high-performance dry connections due to progressive collapse. Tang et al [13], studied and designed an asymmetric double-half-span single-column structure with a fully bolted connection in (RCS) frame structure.…”

Section: Introductionmentioning

confidence: 99%

Assessment of SMC Frames under Different Column Removal Scenarios

Ehab

Maxi

2020

Civ Eng J

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Throughout the past decades, failure of structures threatening the lives of humans had been popular whether through structure failure due to human error such as Hyatt Regency walkway collapse, 1981, terrorist attacks on the American embassy attack in Nairobi, Kenya 1998 and the famous 9/11 attacks in 2001 and many more. As a result of these incidents, The Unified Facilities Criteria (UFC) was developed concerning the progressive collapse issues by analyzing different types of structures under column loss and studying the overall structural behavior. However, the (UFC) didn’t scope on the local behavior of the structural components and its connection under column loss. In this research, the main objective is to study the local behavior of the special moment frame connection (SMC) under column loss. A detailed study is conducted on a 3D model fully designed by adopting the strong-column weak-beam approach following the ACI318-14 regulations. Two frames are selected from the designed structure, interior and exterior frames, to apply the column loss scenario in different locations and different floor levels. The Applied Element Method is adopted in the study. Non-linear time-dependent dynamic analysis is implemented to apply the different column removal scenarios. Twelve case studies are modeled in detail using the Extreme Loading for Structures (ELS) software at which all elements are modeled and analyzed in a 3D model technique. After analyzing the different case studies, structure behavior is observed. Some cases encountered total collapse, other cases encountered partial /local collapse and finally, some survived the column loss scenario. Many parameters are involved and studied in the research. Failure pattern is observed for collapsed cases, the cause of failure is monitored and studied. Special moment connection behavior is studied concerning the shear connection capacity. The location of the column removal with the type of frame selected played an important role in changing the structural behavior from one case to another. As a result, it is not applicable to assume that due to the special moment connection ductility, the structure will be able to resist the column loss in all cases.

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“…About the numerical simulation, Pan et al [8] studied the behavior of beamcolumn joints and the progressive collapse performance of unbonded posttensioned precast concrete frame structures with finite element models which were established in OpenSEES, and Feng et al [9] presented a numerical investigation of the progressive collapse behavior of the precast RC frame subassemblages. Some researchers have also conducted tests on strengthening against the progressive collapse of structures [10][11][12][13][14][15][16][17][18]. Qian and Li [10,11] tested a series of flat slab substructures to assess the effectiveness of proposed CFRP and GFRP strengthening schemes for improving the progressive collapse behavior.…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Precast RC Frame to Mitigate Progressive Collapse by Externally Bonded CFRP Sheets Anchored with HFRP Anchors

Pan

Wang

2018

Advances in Civil Engineering

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Currently, the robustness of precast reinforced concrete frames is attracting wide attention. However, avoiding “strong beams and weak columns” during strengthening against progressive collapse is a key problem. To discuss this problem, an experimental study on two 1/2-scale precast frame subassemblages under a pushdown loading regime was carried out in this paper. One specimen was strengthened with carbon fibre-reinforced polymer (CFRP) sheets on the beam sides. The middle parts of the CFRP sheets were anchored with hybrid fibre-reinforced polymer (HFRP) anchors. Another specimen was not strengthened. The failure mechanisms, failure modes, and strengthening effect are discussed. The strengthening effect is very obvious in the early catenary action stage. No shearing failure develops on HFRP anchors, which proves that the anchoring method is effective. Based on the experimental results, analytical models and preventive strengthening design and construction measures to mitigate progressive collapse of the precast RC frame are proposed.

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Strengthening of precast RC beam-column connections for progressive collapse mitigation using bolted steel plates

Cited by 68 publications

References 21 publications

Dynamic performance of a real-scale reinforced concrete building test under a corner-column failure scenario

Dynamic performance of a real-scale reinforced concrete building test under a corner-column failure scenario

Assessment of SMC Frames under Different Column Removal Scenarios

Strengthening of Precast RC Frame to Mitigate Progressive Collapse by Externally Bonded CFRP Sheets Anchored with HFRP Anchors

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