Dynamic Response of 100 m, 200 m, 300 m Lattice Domes with LRB Seismic Isolator

Choi, Dongil; Kim, Da-jin; Park, Kang-geun

doi:10.17265/1934-7359/2019.08.006

Cited by 1 publication

(1 citation statement)

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“…The structural behaviors of single-layer domes are continually investigated [1][2][3][4], and stability remains amongst the challenges faced for longer spans [5]. The use of a multiple layer steel-truss for increase flexural stiffness has been investigated [6,7], while the doublelayer systems with greater stability have been discussed as an obvious alternative, yet with additional challenges in some cases.…”

Section: Introductionmentioning

confidence: 99%

Static Behavior of a Retractable Suspen-Dome Structure

et al. 2021

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A new design of a radially retractable roof structure based on the concept of the suspen-dome is proposed in this paper. The radially foldable bar structure is strengthened by the lower cable-strut system to obtain a higher structural stiffness. Then the comparison of the static behavior between the retractable suspen-domes and their corresponding foldable bar shell with quadrangular mesh is discussed. Moreover, the effects of different structural and geometric parameters, such as the rise-to-span ratio, the cross-section area of beams, cables and struts, and the pre-stress level of the lower cable-strut system, on the nodal displacements and member forces are investigated systematically. The results show that higher structural stiffness is anticipated with the introduction of cable-strut systems into the hybrid structure. When the rise-to-span ratio is equal to 0.2, the maximal nodal displacement of the suspen-dome reaches the minimal value. The increase of the cross-section area of steel beams contributes an enormous amount to the structural stiffness. Increasing cable and strut sections has little impact on the mechanical behavior of suspen-domes. Moreover, the prestress level of cable-strut systems has a slight influence on the nodal displacements and member forces. Parametric analysis can be regarded as an essential basis for the optimization of the design of a retractable suspen-dome structure.

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