Double-Layer Grids: Review of Dynamic Analysis Methods and Special Topics

Malla, Ramesh B.; Serrette, Reynaud

doi:10.1061/(asce)0733-9445(1996)122:8(882)

Cited by 13 publications

(3 citation statements)

References 135 publications

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“…The instability of a single member can result in a progressive collapse of the structure through load redistribution and successive buckling or yielding. Malla and Serrette (1996b) presented the state of art review on the dynamic analysis techniques include dynamic linear, nonlinear and stability analyses, dynamic loadings, progressive collapse, dynamic effects of member failure, optimization techniques, probabilistic methods, vibration control, system identification and damage detection, special application DLGs, and methods to modify the space truss behaviour. El-Sheikh (1997) tried to improve the buckling compression member behavior with lack of fit in different top, middle, bottom and diagonal members and eccentric joints in an attempt to identify the most critical areas in which no imperfect members should be used.…”

Section: Review Of Literaturementioning

confidence: 99%

Parametric Studies on the Behavior of Steel and Composite Space Structures

Lakshmikandhan

Senthil

Jayachandran

et al. 2009

International Journal of Space Structures

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Double layered grid space structures are well known in the building industry for their ability to cover large areas. This paper presents the results of a parametric study on the various factors affecting the flexural behavior of double layered grid space structures, considering (i) various support arrangement (ii) concrete slab at the top and (iii) an experimental investigation on a full scale space grid. Based on the study it was concluded that top concrete slab enhances not only the strength of top chord compression members but also increase the strength and stiffness of the system with a fail safe system. It was found from the study that atleast 20% saving in steel is possible with a mid edge supported system.

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Section: Review Of Literaturementioning

confidence: 99%

Parametric Studies on the Behavior of Steel and Composite Space Structures

Lakshmikandhan

Senthil

Jayachandran

et al. 2009

International Journal of Space Structures

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“…The members of the structure will therefore experience transient loads and displacements greater than the values derived from static analysis, and consequently, there is the possibility that these dynamic stresses and strains may produce failure in another member of the structure. Failure of a second member will cause further vibration resulting in progressive collapse of other members before a new equilibrium state is reached [15].…”

Section: Dynamic Instability Analysismentioning

confidence: 99%

Static Stability Behaviour of Plane Double-Layer Tensegrity Structures

Abedi

Shekastehband

2008

International Journal of Space Structures

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Tensegrity systems are structures made up of an assembly of pin-jointed pre-stressed continuous tension members (cables) and discontinuous compressive members (struts), arranged in different complex shapes. In the present study, static stability behaviour of plane double-layer tensegrity structures was investigated. Having verified the finite element modeling, several different collapse analyses were carried out in order to examine the instability behaviour of these tensegrity systems. Consequently, the different collapse mechanisms of the tensegrity systems were determined. In this study, the effects of the tensegrity configuration, the influence of the self-stress level, the effects of the post-buckling response of the “compression only” members and the post-yield response of the “tension only” members were investigated. Based on the obtained results, some important conclusions have been drawn and some design recommendations are put forward to prevent the occurrence of the dangerous collapse mechanisms.

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“…Milana et al (2015) provided some insight on the residual strength of diagrid structures in the damaged state, which is modelled by the elimination of diagonal grids. Malla and Serrette (1996) stated that initial lack of perfectness may cause prestressing in members. Particularly in the cases of double-layer grids with high degree of static indeterminacy, they may face unexpected failure at relatively low loads.…”

Section: Introductionmentioning

confidence: 99%

Applications of stiffness-based evaluation method to element importance of truss systems

Cai

Jia

Feng

et al. 2017

Journal of Civil Engineering and Management

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Two structural performance indexes, making use of eigenvalues of stiffness matrix, are presented in the study for the evaluation of element importance in the progressive collapse analysis of space trusses. Both indexes are based on the consensus that the element transferring higher loads in the load path is generally more important in the structural system. The first index is formulated as change of the smallest stiffness after removal of specific element, and the second index is defined as determinant of the stiffness matrix. Several simple numerical examples are presented to investigate performance of the proposed indexes; and finally, a square pyramid space grid system is studied as an illustrative example.

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Double-Layer Grids: Review of Dynamic Analysis Methods and Special Topics

Cited by 13 publications

References 135 publications

Parametric Studies on the Behavior of Steel and Composite Space Structures

Parametric Studies on the Behavior of Steel and Composite Space Structures

Static Stability Behaviour of Plane Double-Layer Tensegrity Structures

Applications of stiffness-based evaluation method to element importance of truss systems

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