Experimental studies of the seismic behavior of double-layer lattice space structures I: Experimental verification

Zhang, Chen-xiao; Nie, Gui-bo; Dai, Junwu; Zhi, Xu

doi:10.1016/j.engfailanal.2016.03.002

Cited by 28 publications

(9 citation statements)

References 14 publications

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“…With the low weight and great stiffness, space trusses are believed to attract low forces during seismic activities and can be considered to be amongst the least likely structure to suffer damage (Hanaor, 2011;Marsh, 2000). Many researchers have studied the seismic performance of space truss structures under severe earthquakes based on dynamic analysis (Arjang, 2004;Nie et al, 2014a;Yang et al, 2011;Zhi et al, 2012) and shaking table tests (Nie et al, 2014b(Nie et al, , 2018Zhang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Seismic behavior of steel space truss connections to reinforced concrete supporting columns

Cui

Yang

Liu

et al. 2022

Advances in Structural Engineering

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Roof joint is a critical connection in space truss structures, which connects the upper steel space truss roofs and reinforced concrete structures. Because of its simple structural detailing and easy construction, a typical kind of roof joint is comprised of four embedded anchor rods, a mortar layer, a base plate, and stiffeners are popular in small- to medium-span space truss structures. Among them, base plates with slotted bolt holes are commonly used to release the deformation caused by temperature change or earthquake input. The roof joints were considered either as pinned or rigid connections in the design. In this paper, quasi-static tests investigating the influence of the applied axial force and the shape of bolt holes on the shear resistance and seismic behavior of roof joints were performed. The roof joints exhibited semi-rigid connection behavior and two types of initial resistance mechanisms, sliding and overturning, were observed. With the increase of applied axial force, the behavior of roof joint changes from sliding to overturning. Finally, effective methods to determine the initial resistance mechanism and calculate the ultimate shear strength of roof joints are proposed. These findings and analyses may provide guidelines for roof joint design practice for space truss structures.

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Section: Introductionmentioning

confidence: 99%

Seismic behavior of steel space truss connections to reinforced concrete supporting columns

Cui

Yang

Liu

et al. 2022

Advances in Structural Engineering

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“…Due to the fact that the three-dimensional performance of the space structures leads to bearing capacity in all directions and reduces the dead weight of the structure, compared to traditional systems, the space structures are relatively light and at the same time have considerable rigidity [8]. In addition, lattice space structures often show good resistance to progressive chain rupture due to the existence of secondary load transfer paths [9]. Especially in the case of space structures in which the architectural function requires that free and relatively large openings be provided in two orthogonal directions in the plan, traditional structures consisting of beams and one-way trusses in such applications, are considered an unfavorable structure from technical and economic aspects and from the point of view of stability and structural behavior on the one hand and dead weight on the other hand, by using such structures, functional, safety and economic intentions will not be satisfactorily met [10].…”

Section: Introductionmentioning

confidence: 99%

A Framework for Optimization of Double Layer Grids with Supporting Cables

Kaveh

Akbari

2022

Period. Polytech. Civil Eng.

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Space structures are used when it is required to cover a large unpaved area such as sports stadiums, aircraft factories, bridges, etc. Weight minimization is important in optimizing space structures, having various advantages such as cost reduction, reduction of the deterioration, increasing the possibility of using larger spans, and easy transportation and installation process. The use of meta-heuristic algorithms, inspired by the physics laws of nature, allows us to optimize a variety of complex problems. In this paper, four structures with different spans with and without cables are examined. Optimization is performed using Enhanced Colliding Bodies Optimization (ECBO) and Vibrating Particles System (VPS) optimization algorithms. The optimization is aimed to minimize the weight and the mid-span deflection of the structures. The utilized methods are based on the optimization algorithms in MATLAB (MATrix LABoratory) programming and the SAP2000 (Structural Analysis Program 2000) finite element software. In this way, the results, obtained from the structural analysis in finite element software, are utilized by the optimization algorithms and the operation is repeated until the optimal weight is achieved. In all the investigated examples, the ECBO performed better than the VPS algorithm. The findings indicate that the addition of the cables, in addition of reducing the weight of the structures can reduce the mid-span deflection.

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“…However, the mechanical characteristics, including elastic and inelastic behavior, of large-span space structures, for which seismic resistant design is very important, are still not thoroughly understood. In the 2013 M7.0 Lushan earthquake in the Sichuan province of China, two typical large-span space structures were found by Zhang et al [1] to be in a severe state of damage. One of them was dismantled, and the other was repaired at extensive costs after the earthquake.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies of Single‐Layer Reticulated Domes with Isolated Supports

Nie

Liu

2018

Shock and Vibration

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To study the seismic behavior of a single-layer reticulated dome subjected to severe earthquakes, a series of shaking table tests were conducted for this paper. Seismic responses including the acceleration, displacement, and strains gathered at the members and nodes were discussed. The dynamic characteristics, including structure frequencies and damping ratio, were obtained through the results under the input excitation of white noise and the fast sine sweeping with different amplitudes. Various isolation devices usually installed in the upper portion of the structures have been widely used to reduce the dynamic responses for more than three decades. However, these isolation devices deal mostly with either horizontal isolation or vertical isolation, which is not applicable for synchronous isolation in both horizontal and vertical isolation. Therefore, an innovative isolated support for three-dimensional isolation was invented. In order to understand the earthquake-isolation effects of a single-layer reticulated dome with the isolated support, a series of shaking table tests were conducted. The dynamic behavior of the structure was then investigated and discussed using the acceleration and displacement responses of the tested structures with or without the isolated supports. The experimental results show that the isolated support invented in this study had a remarkable earthquake-isolation action in both horizontal and vertical isolation.

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Experimental studies of the seismic behavior of double-layer lattice space structures I: Experimental verification

Cited by 28 publications

References 14 publications

Seismic behavior of steel space truss connections to reinforced concrete supporting columns

Seismic behavior of steel space truss connections to reinforced concrete supporting columns

A Framework for Optimization of Double Layer Grids with Supporting Cables

Experimental Studies of Single‐Layer Reticulated Domes with Isolated Supports

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