Vibration Tests on a Full-Size Suspen-Dome Structure

Abstract

A “suspen-dome” structural system consisting of a thin-walled dome and a tensegric system is described, and an overview and results of vibration tests on a full-sized structure are given. The tests revealed the vibration characteristics of the suspen-dome. Close agreement between analytical results based on design information and the test results confirms that the design method used is appropriate. Effectiveness of the suspen-dome against earthquake motions, particularly vertical motions, was confirmed through elastic earthquake response analysis.

Sensitivity analysis of tensegrity systems due to member loss

“…According to the experimental study, it is expected that damping ratios of tensegrity systems to be slightly smaller than those of classical space structures (ξ 1 = 1.5%, ξ 5 = 2.5%) [18]. Therefore, in this section, the effect of damping ratios smaller than those of classical space structures on the behavior of tensegrity systems after sudden member loss is considered.…”

“…This is achieved by introducing two factors α m and β s , which are constants to be determined from two given damping ratios that correspond to two unequal frequencies of vibration. According to the experimental studies, damping ratios are ranged roughly from 1.0% to 2.5% in truss-like structures [18]. Therefore, in the performed analyses, except the mentioned cases, the damping ratios of 1.5% and 2.5% were used.…”

Structural Design of a Practical Large-Span Cable-Frame Type of Suspended Single-Layer Reticulated Shell With Free Surface

“…An ideal 200m-span suspen-dome is analyzed and suggests a possible application of suspen-dome to very large-span roofs [2]. Tatemichi et al [3] conducts a vibration test on a full-size suspen-dome. Kang et al [4] presented their work on some problems of the structural design of suspen-domes.…”

Cable Supported Barrel Vault Structure System and Research on Mechanics Feature

“…CSBVSS) is proposed in this paper inspired by cable supported structure system such as beam string structure (Masao and Kurasiro [4], Masao [5], Masao and Ohtake [6], Saitoh and Okasa [7], Wu [8], Xue and Liu [9]) and suspendome (Kawaguchi et al [10], Tatemichi et al [11], Chen and Li [12], Kang et al [13], Kitipornchai et al [14]), the proposed CSBVSS is composed of a single-layer or thin double-layer cylindrical latticed shell, struts and cables. On the one hand, the rigidity and the out-plane stability of the proposed structure are improved because of the action of struts and cables, consequently, the problem of the span is solved; on the other hand, less steel is used for the single-layer or the thin double-layer cylindrical latticed shell, which makes it cost-efficient and reduces the construction difficulty considerably as well.…”