Investigation on progressive collapse resistance of prestressed concrete frames with infilled walls

Dong, Chen; Zeng, Bin; Huang, Linjie; Zhou, Zhen

doi:10.1016/j.engfailanal.2022.106866

Cited by 6 publications

(3 citation statements)

References 30 publications

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“…In recent decades, the issue of structural progressive collapse has received growing attention worldwide, and the study of member importance is the key to investigating the progressive collapse resistance of structures. Notably, previous researches have concentrated on investigating the progressive collapse resistance of concrete frame structures 1–3 and steel frame structures 4–6 . Recently, the collapse of large‐span space structures has been reported frequently.…”

Section: Introductionmentioning

confidence: 99%

Multi‐indicator evaluation method of important members of truss string structures

Liu,

Zeng,

Zhou

et al. 2023

Structural Design Tall Build

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SummaryDuring the past decade, the progressive collapse of structures has received growing attention, and the study of member importance is a key step for investigating the progressive collapse resistance. However, traditional methods for evaluating the member importance usually employ a single indicator, and when multiple indicators are involved, different indicators may generate different member rankings. Moreover, the truss string structure is a multiple super‐stationary structure with many members, and the current studies mainly focus on cable failure, which does not mean that other members are not important. In this study, the initial selection of important members is first performed based on concept evaluation, and then, the alternate path method is used to analyze the progressive collapse resistance of truss string structures; the slope degradation coefficient γ of incremental dynamic analysis curve, load capacity degradation coefficient β, and nested load capacity degradation coefficient β′ are introduced; and the sensitivity coefficient SIj and fragility coefficient VIi are defined with axial force as the structural response. Based on the above five indicators, two cases are conducted to evaluate the member importance. The analysis results show that the cable and the bottom chord member at the support are evaluated as the first‐level important members. Through the analysis of different indicators, it is found that the regularity of the coefficient of each member is inconsistent for different indicators. The results could be one‐sided if the important members were evaluated by a single indicator only. In addition, the second‐level important members of truss string structures are evaluated by multi‐indicator analysis. Finally, the nominal progressive collapse resistance of truss string structures is given based on the importance coefficient of the first‐ and second‐level important members.

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Section: Introductionmentioning

confidence: 99%

Multi‐indicator evaluation method of important members of truss string structures

Liu,

Zeng,

Zhou

et al. 2023

Structural Design Tall Build

Self Cite

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“…DIANA modeling software is used to model reinforced concrete frames with varying floors. To study the resistance to progressive collapse in the event of middle column failure, a finite element numerical model of infilled walls and prestressed concrete frames (IW-PC frame) is developed [20]. Using 29 reinforced concrete sub-assemblages, five different test setups, and three different test scales, EL-Ariss et al [21] determined whether the fiber element approach is appropriate for conducting a thorough numerical investigation on the possibility of progressive collapse of reinforced concrete (RC) frame structures due to interior column exclusion.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of Structural Behavior of RC Frames With and Without Infill Walls Subjected to Progressive Collapse

Bhatta¹,

Yang²,

Liu³

2023

J. Civ. Eng. Constr.

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This paper aims to develop a numerical model of RC frame considering the same geometrical properties, material properties and boundary conditions in ABAQUS and validated with the experimental results comparing its force-displacement curve, damage pattern and stress and strain variations with the experimental outcomes. The use of infill walls increases the progressive collapse resistance force, mainly in the CAA. This is due to the addition of compressive action of infill walls to beam bending and CAA of RC frame. Plastic hinge was observed at the beam ends in case of RC bare frame. However, in the case of RC frame with infill wall, the plastic hinge was formed at some distance from middle joint interface and near the adjacent column joint on first floor and at some distance from adjacent column joint and near middle joint interface on second floor. Furthermore, in order to examine the effect of full height infill walls on progressive collapse resistance mechanism, RC frame with full height concrete block is modeled in ABAQUS and compare the results. It is seen that the RC frame with full height infill walls provides much higher progressive collapse resistance force in all stages i.e. beam mechanism stage, transient stage and catenary action stage.

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“…Li et al [17] investigated the resistance to progressive collapse of prestressed precast concrete frame structures by establishing a FE model and proposed a method for calculating the resistance to collapse of prestressed PC frame structures in CAA. Chang et al [18] established a FE model of prestressed concrete frame with infill wall and found that the infill wall can enable the structure to enter TCA in advance, improving the collapse resistance bearing capacity of the prestressed concrete frame. Studies by Yu et al [19] showed that the progressive collapse resistance of the RC beam-slab substructure is mainly attributed to the compression arch action of the beam, the bending mechanism, the TCA, and the tensile membrane action of the slab.…”

Section: Introductionmentioning

confidence: 99%

Progressive Collapse Resistance Mechanism of RC Frame Structure Considering Reinforcement Corrosion

Bao

Wang

et al. 2023

Modelling and Simulation in Engineering

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Corrosion causes reduction in cross-sectional area of reinforcement, deterioration of mechanical properties, and degradation of bonding properties between reinforced concrete, which are the most important factors leading to the degradation of structural service performance. In order to investigate the progressive collapse mechanism of a corroded reinforced concrete frame structure, the failure modes, characteristics of the vertical displacement, and load capacity are studied using the finite element method. Based on existing experimental research, the established model is verified, and the influence of different influencing factors on the progressive collapse mechanism is analyzed. The results show that the corrosion of the reinforcement affects the yield load, peak load, and ultimate load of the reinforced concrete substructure. As the corrosion rate increases, the tensile arch action shows a particularly severe deterioration. The variation of concrete strength and the height–span ratio affects the substructure’s load-bearing capacity much more significantly than the stirrup spacing.

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Investigation on progressive collapse resistance of prestressed concrete frames with infilled walls

Cited by 6 publications

References 30 publications

Multi‐indicator evaluation method of important members of truss string structures

Multi‐indicator evaluation method of important members of truss string structures

Numerical Modelling of Structural Behavior of RC Frames With and Without Infill Walls Subjected to Progressive Collapse

Progressive Collapse Resistance Mechanism of RC Frame Structure Considering Reinforcement Corrosion

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