Effect of Horizontal Restraints on Progressive Collapse Resistance of Precast Concrete Beam-Column Framed Substructures

Wang, Feiliang; Yang, Jian; Shah, Sandeep Kumar

doi:10.1007/s12205-020-1035-9

Cited by 16 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted at this point that the columns' linear-elastic behaviour was supported by the lack of damage to these elements during the test. The ABAQUS concrete damage plasticity model [12,[41][42][43][44][45] was used for the concrete in the slabs, including concrete cracking and crushing for tensile and compressive behaviour, respectively. Compression was defined from Eurocode 2 [40] considering the mechanical parameters given in Table 1.…”

Section: Fe Modelmentioning

confidence: 99%

A Parametric Computational Study of RC Building Structures under Corner-Column Removal Situations

et al. 2020

View full text Add to dashboard Cite

Building progressive collapse is currently one of the hottest topics in the structural engineering field. Most of the research carried out to date on this topic has been focused on the structural analysis of the failure of one or more columns in a building to determine the Alternative Load Paths (ALPs) the structure can activate. Past research was mainly focused on extreme situations with high loads and large structural deformations and, to a lesser extent, research looked at lower loads used in design accidental situations, which requires a different set of assumptions in the analysis. This paper describes a study aimed at analysing accidental design situations in corner-column removal scenarios in reinforced concrete (RC) building structures and evaluating the available real ALPs in order to establish practical recommendations for design situations that could be taken into account in future design codes. A wide parametric computational analysis was carried out with advanced Finite Element (FE) models which the authors validated by full-scale tests on a purpose-built building structure. The findings allowed us to: (i) establish design recommendations, (ii) demonstrate the importance of Vierendeel action and (iii) recommend Dynamic Amplification Factors (DAFs) for design situations.

show abstract

Section: Fe Modelmentioning

confidence: 99%

A Parametric Computational Study of RC Building Structures under Corner-Column Removal Situations

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Quasi-static testing [8,14,[25][26][27] and pushdown analyses [13,26,28,29] were used in several studies to examine the resistance of RC substructure to progressive collapse under several column-elimination scenarios. Unlike substructures that rely merely on the CAA and TCA [30][31][32], the existence of slabs not only upgraded the substructure resistance to progressive collapse through compression and tension membrane action, CMA, and TMA [10,[33][34][35][36][37] but also made the structural progressive collapse-resistance reliant on the loading scheme, i.e., uniformly distributed (CL) or concentrated load (CL).…”

Section: Introductionmentioning

confidence: 99%

Effects of Floor System on Progressive Collapse Behavior of RC Frame Sub-Assemblages

2022

View full text Add to dashboard Cite

The ability to predict the resistance of reinforced concrete (RC) structures to progressive collapse as a result of an interior column removal has become a need in structural design. In general, three resistance mechanisms characterize the structure resistance to progressive collapse, flexural action, compressive arch action, and tension catenary action. The objective of this study is to investigate the effects of floor system configurations on the progressive collapse-resistance of RC frame sub-assemblages and the amount of energy dissipated in each resistance mechanism. This investigation employs a fiber element-based modeling technique to present findings into the effects of beam size and reinforcement details on the progressive collapse-resistance and energy dissipation of RC beam-column sub-assemblages with four equal spans. Three different span lengths of 5, 6, and 7 m were considered. A total of 38 floor system designs for gravity loads were performed in accordance with the ACI 318-14 design code. The modeling technique employed in this study was validated and utilized by the authors in previously published works. The study shows that beam size and the presence of slab are critical as they significantly affect the energy dissipation and progressive collapse-resistance and failure pattern of the sub-assemblage frames. Moreover, the presence of a slab was found to increase the energy dissipation by around 28%.

show abstract

Lateral deflections of slender RC columns under eccentric compression loading with different end conditions

Mahmoud,

Abdel Raheem,

Mansour

2024

Structural Concrete

View full text Add to dashboard Cite

In the literature, several methods have focused mostly on determining the lateral deflection of columns with pinned end conditions. This paper presents a powerful method that allows the calculation of lateral deflection for columns of different end conditions, with particular attention to reinforced concrete (RC) columns. By utilizing the moment–curvature relations, a numerical procedure to compute slopes and deflections of pin‐ended columns is proposed, in which the slopes and deflections are corrected via an efficient and fast technique. Accordingly, slopes and deflections of columns with different end conditions are determined via procedures that rely on a simple searching technique. The second‐order analysis is individually included in the calculations; therefore, the complexity arising from the direct impact of the axial load on the lateral deflection is averted. Therefore, the method has the potential for inclusion in many numerical models for different structural members. The equations derived via the developed method have identical responses to the expressions obtained via the exact methods. A series of numerical examples are presented to illustrate the applicability of the proposed method to RC columns with different loadings and end conditions. Finally, the proposed method is evaluated, and its accuracy is demonstrated via parametric verification. As the axial load increased, the lateral displacement increased somewhat. The greater the eccentricity is, the greater the lateral displacement. As the eccentricity increased, the failure mode of the RC column changed from compression failure to bending failure.

show abstract

Effect of Horizontal Restraints on Progressive Collapse Resistance of Precast Concrete Beam-Column Framed Substructures

Cited by 16 publications

References 17 publications

A Parametric Computational Study of RC Building Structures under Corner-Column Removal Situations

A Parametric Computational Study of RC Building Structures under Corner-Column Removal Situations

Effects of Floor System on Progressive Collapse Behavior of RC Frame Sub-Assemblages

Lateral deflections of slender RC columns under eccentric compression loading with different end conditions

Contact Info

Product

Resources

About