Controlling Characteristics of Passive Mega-Subcontrolled Frame Subjected to Random Wind Loads

Zhang, Xun’an; Zhang, Jianlin; Wang, Dong; Jiang, Jie

doi:10.1061/(asce)0733-9399(2005)131:10(1046)

Cited by 24 publications

(9 citation statements)

References 4 publications

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“…Such a system has the following advantages: (a) efficient and economic use of resources by incorporating different materials for the mega‐frame and the substructures, (b) flexibility to meet special architectural or functional requirements, (c) better structural performance and integration and (d) quicker and easier construction. Although very limited theoretical and experimental research has been conducted in this area (Feng and Mita, ; Lan et al ., ; Shu et al ., ; Zhang et al ., ; and Kim and Jung, ), existing research outcomes indicate that the mega‐frame structure has outstanding seismic performance. Nevertheless, limited study has been conducted to investigate how to efficiently control the vibration of mega‐frame structures subjected to earthquakes.…”

Section: Introductionmentioning

confidence: 99%

Shaking table model test and FE analysis of a reinforced concrete mega‐frame structure with tuned mass dampers

Jiang

Guan

et al. 2014

Structural Design Tall Build

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SUMMARYTo study the damage characteristics and to evaluate the overall seismic performance of reinforced concrete (RC) mega-frame structures, a shaking table test of a 1/25 scaled model with a rooftop tuned mass damper (TMD) is performed. The maximum deformation and acceleration responses are measured. The dynamic behavior and the damping effect with and without TMD are compared. The results indicate that the mega-frame structure has excellent seismic performance and the TMD device has a significant vibration reduction effect. A finite element (FE) model simulating the scaled model is also developed, and the numerical and experimental results are compared to provide a better understanding of the overall structural behavior in particular those related to the dynamic characteristics and damping effect. Upon verification of the FE model, other important structural behavior can also be predicted by the FE analysis.

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Section: Introductionmentioning

confidence: 99%

Shaking table model test and FE analysis of a reinforced concrete mega‐frame structure with tuned mass dampers

Jiang

Guan

et al. 2014

Structural Design Tall Build

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“…; n s Þ are the lateral deformation vectors of the mega-frame and i th substructure, respectively. M, K, C, and G expresses the global mass matrix, stiffness matrix, damping matrix, and mass vector of the system, respectively [Zhang et al, 2005], and € x g is the simulated seismic ground acceleration at the base of the structure. In the present study, € x g is modeled as a stationary random process, as expressed below by Eq.…”

Section: Equations Of Motion Of the Passive Mega-sub Controlled Strucmentioning

confidence: 99%

A New Proposed Passive Mega-Sub Controlled Structure and Response Control

Zhang

Qin

Cherry

et al. 2009

Journal of Earthquake Engineering

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It is still a serious challenge for structural engineers to effectively reduce the seismic responses of tall and super tall buildings to further improve these structural safeties. In order to solve this problem, in this article a new kind of structural configuration, named passive mega-sub controlled structure (PMSCS), is presented, which is constructed by applying the structural control principle into structural configuration itself, to form a new structure with obvious response self-control ability, instead of employing the conventional method. In the analysis of PMSCS the equations of motion of the seismically excited system are developed, based on a realistic analytical model of the complete mega-structural system. Expressions of the displacement and acceleration response of the structure, resulting from simulated earthquake ground motions represented by stationary and nonstationary random processes, are derived. These responses are then determined for both the PMSCS and its conventional mega-sub structure (MSS) counterpart, whose configuration was modeled after the traditional mega-frame that was used in the construction of the Tokyo City Hall. A parametric study of the structural characteristics that influence the response control effectiveness of the PMSCS is presented and discussed. The region over which these structural characteristics yield the optimum seismic response control of the PMSCS is identified and serves as a very useful design tool for practitioners. The study illustrates that the proposed PMSCS offers an effective means of controlling the seismic displacement and acceleration response of tall/super-tall mega-systems. It also overcomes shortcomings exhibited in earlier proposed mega-sub controlled structural configurations.

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“…Over the past several decades, a series of studies on controlling the vibrations of MFVCSs have been conducted. For example, Feng and Mita, 7 Feng and Chai, 8 Chai and Feng, 9,10 Lan et al 11 Zhang et al 12,13 Li et al 14 Lian et al 15 Li et al 16 and Anajafi and Medina 17 developed either theoretical or simplified FE models to study the performance of the MFVCS under wind or seismic loads. Lan et al 18 conducted a shaking table test to compare the dynamic behaviors between traditional mega‐frame structures (TMFSs) and MFVCSs under seismic loads.…”

Section: Introductionmentioning

confidence: 99%

Shaking table model test of a mega‐frame with a vibration control substructure

Jiang

Wang

Xian-guo

et al. 2020

Structural Design Tall Build

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Summary A mega‐frame with a vibration control substructure (MFVCS) is a tuned mass damper system that converts substructures into a tuned mass. In this study, a kind of MFVCS using lead–rubber bearings (LRBs) to connect the vibration control substructure to the mega‐frame was proposed. To investigate the damping effect of this MFVCS, a series of shaking table tests were conducted, and the seismic responses of the MFVCS were compared with those of the traditional mega‐frame structure (TMFS). The results show that the seismic responses of the MFVCS are clearly smaller than those of the TMFS; additionally, the proposed MFVCS can provide a sufficient damping effect under different ground motions. Finite element (FE) models of the TMFS and MFVCS were established and validated by experimental results. Finally, the simulation results adopting different LRB models (equivalent linear and nonlinear elements) were compared, and the results indicate that simulation results can be obtained with greater accuracy from the FE model with a nonlinear LRB model than that with a linear LRB model.

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Controlling Characteristics of Passive Mega-Subcontrolled Frame Subjected to Random Wind Loads

Cited by 24 publications

References 4 publications

Shaking table model test and FE analysis of a reinforced concrete mega‐frame structure with tuned mass dampers

Shaking table model test and FE analysis of a reinforced concrete mega‐frame structure with tuned mass dampers

A New Proposed Passive Mega-Sub Controlled Structure and Response Control

Shaking table model test of a mega‐frame with a vibration control substructure

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