A preliminary analysis and discussion of the condominium building collapse in surfside, Florida, US, June 24, 2021

Lu, Xinzheng; Guan, Hong; Sun, Hailin; Li, Yi; Zheng, Zhe; Fei, Yifan; Yang, Zhi; Zuo, Lingxiao

doi:10.1007/s11709-021-0766-0

Cited by 70 publications

(27 citation statements)

References 31 publications

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“…Advances in Civil Engineering [4,36,37]. Subsequently, the simulated virtual wreckages were compared with the actual physical collapse wreckages at the site.…”

Section: Visualization Of the Collapse Progressmentioning

confidence: 99%

“…Safety during the service life is one of the most critical building requirements. However, in the last few decades, building collapse accidents have repeatedly occurred worldwide, causing severe injury, death, adverse social impact, and economic loss [1][2][3][4]. ese catastrophic events have raised increasing concerns for engineers and researchers.…”

Section: Introductionmentioning

confidence: 99%

“…Building collapse can be caused by several factors, making it difficult to identify the major causes [5][6][7][8]. Widely used building collapse investigation methods include (1) site-investigation methods [9,10] and (2) simulation-based methods [4,8]. Although widely used, these investigation methods are limited in more complex situations.…”

Section: Introductionmentioning

confidence: 99%

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Digital Twin‐Based Investigation of a Building Collapse Accident

Zheng

Liao

Lin

et al. 2022

Advances in Civil Engineering

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The collapse of engineering structures can cause significant casualties and have negative social effects. Collapse accident investigation can elucidate the potential causes and mechanisms of the collapse accident, thus remediating future structural collapse and enhancing the resilience. However, there are some obstacles to investigating complicated collapse accidents using conventional methods. For example, the out-syncs between on-site investigation and simulation analysis are intractable and can make discovering the cause of collapse accidents difficult. Hence, a digital twin-based investigation method for collapse accidents was proposed. First, basic virtual digital building models are established using real-world information. Then, after mapping the data from the real world into the virtual space, the corresponding highly realistic multistage models before and after the building collapse accident are constructed and synchronized. Using the digital twin method, investigators with multidisciplinary knowledge can efficiently integrate, update, and check the models. Finally, the potential collapse mechanism was revealed with the assistance of the corresponding models. To demonstrate the effectiveness of the proposed digital twin-based investigation method, a real collapse accident investigation is utilized as an example. These results validated our method.

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“…Advances in Civil Engineering [4,36,37]. Subsequently, the simulated virtual wreckages were compared with the actual physical collapse wreckages at the site.…”

Section: Visualization Of the Collapse Progressmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Digital Twin‐Based Investigation of a Building Collapse Accident

Zheng

Liao

Lin

et al. 2022

Advances in Civil Engineering

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“…Due to the mechanisms of brittle failure at slab-columns joints, it is easy to cause progressive collapse, which affects the integrity of the structures [10]. On 24 June 2021, a condominium building collapsed [11] in which 98 people were killed in the accident (Figure 1). Scholars have carried out a lot of research in the hope of improving the understanding of the punching shear [9,12,13].…”

Section: Introductionmentioning

confidence: 99%

A Modified Compression Field Theory Based Analytical Model of RC Slab-Column Joint without Punching Shear Reinforcement

Huang

Tong

et al. 2022

Buildings

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RC slab–column structures are widely used because of the advantages of small space occupation for horizontal members, easy construction and good economy. However, slab–column joints are prone to punching shear failures, which deteriorates structural safety. This paper provides an analytical model to predict the punching shear capacity of the RC slab–column joint. A database of 251 test results is established for the shear punching capacity of slab–column joints without punching shear reinforcement. The performance of existing design codes in predicting the shear resistance of slab–column joints is investigated and compared based on the database. Then, based on the modified compression field theory (MCFT) model, an equation for calculating the punching shear resistance of slab–column joints without punching shear reinforcement is established. The prediction results of the analytical model are enhanced by using the regression analysis method. The model proposed in this paper is based on both reliable theoretical and the summary of a large number of test results, which has higher prediction accuracy than the design codes.

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“…When considering the punching situation outside the cap zone, it is usually dealing with the case of a large-size flexible support of a square/rectangular shape. Designing the improper size of the shear caps or its wrong thickness may lead to punching shear failure of a slab–column connection and, in consequence, to a catastrophe failure of the reinforced concrete structure, e.g., [ 1 ] or [ 2 ]. Therefore, there is a need to extend knowledge of this phenomenon and raise the awareness of structural designers that the punching shear phenomenon cannot be omitted in the design process of reinforced concrete structures, especially slab–column connections.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Shear Cap Size and Stiffness on the Distribution of Shear Forces in Flat Slabs

Grabski

Ambroziak

2021

Materials

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The scope of this paper is to investigate analytically and numerically the influence of shear cap size and stiffness on the distribution of shear forces in flat slabs in a slab–column-connections-reinforced concrete structure. The effect of support (shear cap) stiffness on the calculation of the length of the shear control perimeter according to the available methods is presented. Based on the analysis, the authors indicate in what range of support stiffness the corner concentrations become important in the calculation of the punching resistance. For shear caps with high flexibility (α1 ≤ 0.5), the concentration of internal forces in the corners does not occur. The authors compare the numerical results obtained from the calculation methods and indicate the correlations, which can be useful guidance for structural designers. In the case of large shear caps, the simplified MC2010 method gives a significantly lower value of the effective control perimeter length compared to more accurate methods. This paper is intended to provide scientists, civil engineers, and designers with guidelines on which factors influence punching shear load capacity of the slab–column connections with shear caps.

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A preliminary analysis and discussion of the condominium building collapse in surfside, Florida, US, June 24, 2021

Cited by 70 publications

References 31 publications

Digital Twin‐Based Investigation of a Building Collapse Accident

Digital Twin‐Based Investigation of a Building Collapse Accident

A Modified Compression Field Theory Based Analytical Model of RC Slab-Column Joint without Punching Shear Reinforcement

Influence of the Shear Cap Size and Stiffness on the Distribution of Shear Forces in Flat Slabs

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