Dynamic Analysis of Staggered Truss Framing System

Gupta, Raj; Goel, Subhash C.

doi:10.1061/jsdeag.0003275

Cited by 14 publications

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“…A staggered truss steel framing system is an economical, green, and flexible structural system that can provide larger space without columns. The main components can realize full prefabricated assembly construction, and the steel can be recycled, which is in line with the development trend of green building [ 1 , 2 , 3 , 4 ]. Figure 1 depicts the horizontal force transmission path of a staggered truss steel framing system.…”

Section: Introductionmentioning

confidence: 98%

Experimental and Theoretical Studies on Hysteretic Behavior of Friction Energy Dissipation Composite Chord under Quasi-Static Tests

Zhou

et al. 2023

Materials

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To improve the seismic performance of a staggered truss steel framing system, the basic force unit in the truss system is replaced by a friction energy dissipation truss. The difference between a friction energy dissipation truss and an ordinary truss is that the upper chord is a friction energy dissipation composite chord. In this paper, we investigate the effects of the number of bolts and the friction surface on the energy dissipation capacity of the chord by a quasi-static test on six composite chord specimens at a scale of 1:2. The results show that the hysteresis curves of friction energy dissipation composite chords are ideal rectangles, and the energy dissipation capacity is excellent. The more bolts there are in the specimen, the slower the energy dissipation capacity of the chord decreases. Among the different friction surface specimens, the energy dissipation capacity of the aluminum friction plate specimen decays the fastest, while the energy dissipation capacity of the shot-blasted treated specimen decays substantially after the first cycle. Friction plates can improve the stability of the hysteresis properties. Based on the test results, this paper proposes a calculation method for the ultimate bearing capacity of the composite chord, which provides a basis for the design of a friction energy dissipation truss. In addition, we studied the effects of different bolt clamping forces and slotted bolt hole lengths on the energy dissipation capacity of composite chords by establishing a finite element analysis. It was shown that as the clamping force of the bolt increases, the energy dissipation capacity of the specimen becomes stronger but the stability decreases. The energy dissipation capacity of the chord is close to a linear relationship with the slotted bolt hole lengths; thus, increasing the slotted bolt hole lengths within the allowable range of inter-story drifts can enhance the energy dissipation capacity of the chord. Finally, we propose the design method of the angle steel by analyzing the force of the chord.

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Section: Introductionmentioning

confidence: 98%

Experimental and Theoretical Studies on Hysteretic Behavior of Friction Energy Dissipation Composite Chord under Quasi-Static Tests

Zhou

et al. 2023

Materials

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“…In the middle of the trusses, a Vierendeel panel without diagonal web member is usually adopted to build a practical corridor and increase the ductility of the trusses [2]. The truss members and columns in a SSTF system are mainly subjected to axial forces, which are efficient in carrying loads and reducing steel consumption [3]. The columns are arranged on the perimeter of the structure only, which reduces superstructure weight and saves foundation cost.…”

Section: Introductionmentioning

confidence: 99%

“…Since the SSTF system originated in 1960s [1], continuous researches on the load-carrying behaviors, design solutions and seismic performances were conducted. Gupta and Goel [3] conducted inelastic dynamic analyses of a SSTF system with a proposed computational analytical model. High seismic performance of the system was proved: only the chord members in the Vierendeel panels yielded when the structure was subjected to 1.5 times the ground motion of the 1940 EI Centro earthquake.…”

Section: Introductionmentioning

confidence: 99%

Behavior Insights and Plastic Design Considerations of SSTF Systems Based on Detailed Finite Element Analyses of a Proposed Sub-Structure

2024

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The steel staggered truss framing (SSTF) system has been increasingly utilized due to its large column-free spaces, high construction efficiency, and favorable economic benefits. Despite its advantages, the SSTF system has yet to be incorporated in mainstream seismic design codes and is predominantly applied in low-seismic regions. The primary obstacle hindering the wider application of the SSTF system is the limited understanding of its inelastic behaviors, particularly in regard to diaphragm actions. This study firstly introduces an SSTF sub-structure that precisely reflects the diaphragm actions and the structural behaviors of SSTF systems, facilitating experimental researches and finite element (FE) analyses. Subsequently, a detailed SSTF sub-structure FE model and a pure steel truss FE model, considering the diaphragm actions and gusset plate connections, were established based on a plastically designed prototype SSTF structure in previous study. The yielding mechanism of the chord members, inelastic behaviors of the diaphragms, lateral responses, and stress distributions of the web members were investigated. Lastly, plastic design considerations involving the classification of the rigidity of the diaphragm, rotation demand of the chord member, mechanical calculation model of the truss and amplification factor of the web members were given to facilitate achieving the expected ductile failure mode of SSTF systems.

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“…The elastic and elaso-plastic seismic response of a staggered truss system was first analyzed by Gupta, based on the analyses of the mechanical properties of members, in which the elasto-plastic analytic model under earthquake was simplified to a planar model [6].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Time History Analysis of the Effect of Infilled Walls on the Steel Staggered-Truss System

Guo

Yang

2012

AMR

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A structure with steel staggered-truss (SST) system is numerically investigated in this paper, utilizing the finite element 3D simulation analytial soft ware ETABS. Two different 3D models considering or ignoring the stiffness of infilled walls (SIW) are analyzed with Dynamic Time History method including storey drift and equivalent base shear force under frequent earth quake and rare earth quake. Results indicate that the effect of the SIW is prominent and should be considered.

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Dynamic Analysis of Staggered Truss Framing System

Cited by 14 publications

References 0 publications

Experimental and Theoretical Studies on Hysteretic Behavior of Friction Energy Dissipation Composite Chord under Quasi-Static Tests

Experimental and Theoretical Studies on Hysteretic Behavior of Friction Energy Dissipation Composite Chord under Quasi-Static Tests

Behavior Insights and Plastic Design Considerations of SSTF Systems Based on Detailed Finite Element Analyses of a Proposed Sub-Structure

Dynamic Time History Analysis of the Effect of Infilled Walls on the Steel Staggered-Truss System

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