Failure mechanism and design method of reticulated shells considering joint damage accumulation effect under earthquake load

Ma, Hongwei; Ma, Yueyang; Fan, Feng; Zhang, Yingnan

doi:10.1016/j.istruc.2022.03.069

Cited by 5 publications

(2 citation statements)

References 20 publications

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“…Either the reticulated shell's displacement will not converge as the PGA climbs over a certain threshold, or the structure will collapse. When the structure has reached the critical failure stage, the members yield over a wide range, whereas the overall yield degree of the joints is low [31,32]. Damage to the structure can be stated as an attribute of an unexpected change in the material or geometric properties that are acting against the functioning of the system and adversely affecting its safety, dependability, and performance.…”

Section: Scopementioning

confidence: 99%

Identification of Structural Damage and Damping Performance of a Mega-Subcontrolled Structural System (MSCSS) Subjected to Seismic Action

2022

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Due to multiple degrees of freedom, evaluating high-rise buildings’ seismic safety under unpredictable seismic excitations is difficult. To address the issue that the damage mechanism of a mega-subcontrolled structural system (MSCSS) has not yet been studied, this paper employs ABAQUS software with strong nonlinear analysis capabilities to analyze the nonlinear elastic‒plastic time history of an MSCSS, analyze structural damage to the MSCSS structure, reveal the internal energy dissipation mechanism of the MSCSS, and evaluate the damping performance of the MSCSS structure. This work presents a novel and optimized MSCSS structure equipped with SPSW that improves the system’s seismic performance. First, a refined finite element model of the MSCSS is established, and the impact of vigorous seismic excitations on the damage to the MSCSS structure is considered. The MSCSS structure’s vulnerable parts are then summarized using stress nephograms and residual stresses. Finally, the favorable damping performance of the structure reveals that the newly proposed structure has good shock absorption performance based on an analysis of the energy dissipation, time history, and interstory drift of the MSCSS. This paper’s research findings elaborate the structural damage trend in MSCSS structures, which can serve as a theoretical foundation for MSCSS structure damage identification.

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Section: Scopementioning

confidence: 99%

Identification of Structural Damage and Damping Performance of a Mega-Subcontrolled Structural System (MSCSS) Subjected to Seismic Action

2022

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“…They reported that semirigid connection steel frames were more capable of resisting the progressive collapse of structures under unexpected loading than the rigid connection steel frames. Hm et al [11] used numeral simulations and theoretical analyses to explore the seismic characteristics of single-layer reticulated shell structures with prefabricated joints. After establishing four typical structure failure modes, they discovered that the joint stiffness and joint bearing capacity had a substantial effect on the structural failure models.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Evaluation of the Progressive Collapse of Cable Dome Structures Induced by Joint Damage

et al. 2023

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The current literature lacks an effective progressive collapse analysis of a cable dome structure induced by joint damage. In this study, a dynamic analysis was performed using actual construction cases, an ANSYS LS-DYNA analysis platform, and a fully dynamic equivalent load instantaneous removal method. First, the structure’s dynamic responses and collapse modes induced by different joints with different types of damage were explored. Subsequently, joint importance coefficients were proposed depending on the structure’s displacement before and after joint removal, and the relationships between the joint importance coefficients and the joint properties and collapse modes, respectively, were then identified. Finally, the relationship between the joint damage and the connected component damage was explored. The results revealed that different joints and identical joints with different types induced a variety of dynamic responses. However, the dynamic response induced by the discontinuous joint damage was more apparent than that induced by the continuous joint damage. When a continuous joint model was used, the damage on all joints did not result in the progressive or local progressive collapse of the structure. Thus, all these joints were considered as common joints. However, when a discontinuous joint model was used, the failure of the joints resulted in three distinct collapse modes, namely a progressive collapse, a local progressive collapse, and a nonprogressive collapse, corresponding to the key joints, the important joints, and the common joints, respectively. These three types of joints corresponded to different importance coefficients. When damage occurred in the discontinuous joints separately linked to the key components, the important components, and the common components, the joints resulted in the progressive collapse, local progressive collapse, and nonprogressive collapse, respectively, of the structure.

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Experimental and numerical simulation on seismic failure of aluminum alloy reticulated shell

Sun,

Xiao,

et al. 2024

Journal of Constructional Steel Research

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Failure mechanism and design method of reticulated shells considering joint damage accumulation effect under earthquake load

Cited by 5 publications

References 20 publications

Identification of Structural Damage and Damping Performance of a Mega-Subcontrolled Structural System (MSCSS) Subjected to Seismic Action

Identification of Structural Damage and Damping Performance of a Mega-Subcontrolled Structural System (MSCSS) Subjected to Seismic Action

Analysis and Evaluation of the Progressive Collapse of Cable Dome Structures Induced by Joint Damage

Experimental and numerical simulation on seismic failure of aluminum alloy reticulated shell

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