Vibration behaviour of steel-timber composite floors, part (1): Experimental & numerical investigation

被引：43

作者：

Chiniforush, A. A. ^{[1
]}

Alamdari, M. Makki ^{[2
]}

Dackermann, U. ^{[2
]}

Valipour, H. R. ^{[2
]}

Akbarnezhad, A. ^{[1
]}

机构：

[1] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia

[2] UNSW Sydney, Sch Civil & Environm Engn, Ctr Infrastruct Engn & Safety, Sydney, NSW 2052, Australia

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2019年 / 161卷

关键词：

Damping; Genetic algorithm; Modal analysis; Natural frequency; Steel-timber composite (STC); FINITE-ELEMENT MODEL; TUNED MASS DAMPERS; ACTIVE CONTROL; CONNECTIONS; DESIGN; IDENTIFICATION; GLULAM;

D O I：

10.1016/j.jcsr.2019.07.007

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper is the first part of a comprehensive experimental and numerical study on the vibration behaviour of innovative steel-timber composite (STC) floors under service loading conditions. Due to the lighter weight and lower inherent damping of STC floors compared to conventional steel-concrete composite floors, vibration performance is a major serviceability concern that should be addressed to ensure that the dynamic characteristics of the system are within the range of human comfort. Extensive modal testing and numerical analysis were carried out on six STC beams and the acceleration response, natural frequencies, damping ratios and mode shapes were extracted. A 3D finite element (FE) model of the STC beams was generated and calibrated/updated by the Genetic Algorithm to minimise the difference between the experimentally measured and the numerically predicted natural frequencies, mode shapes and dynamic flexibility matrix. It is shown that the updated FE models can predict the vibration response of the idealised STC floors with reasonable accuracy. In Part 2 of the paper, the validated FE model in conjunction with the available guidelines in BS EN 1995-1-1 (EC5), AISC Design Guide 11 and the ECCS reports are utilised to assess the performance of STC floors subject to human-induced vibrations. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：244 / 257

页数：14

共 66 条

[1] Nonlinear Joint Model Updating in Assembled Structures [J].

Alamdari, Mehrisadat Makki ;

Li, Jianchun ;

Samali, Bijan ;

Ahmadian, Hamid ;

Naghavi, Ali .

JOURNAL OF ENGINEERING MECHANICS, 2014, 140 (07)

[2] Active control of along wind response of tall building using a fuzzy controller [J].

Aldawod, M ;

Samali, B ;

Naghdy, F ;

Kwok, KCS .

ENGINEERING STRUCTURES, 2001, 23 (11) :1512-1522

[3]

Allen D., 1990, CONCRETE INT, P66

[4] Mass Normalized Mode Shapes Using Impact Excitation and Continuous-Scan Laser Doppler Vibrometry [J].

Allen, Matthew S. ;

Sracic, Michael W. .

EIGHTH INTERNATIONAL CONFERENCE ON VIBRATION MEASUREMENTS BY LASER TECHNIQUES: ADVANCES AND APPLICATIONS, 2008, 7098

[5]

[Anonymous], 2004, EN 1995 1 1

[6]

Ataei A., 2019, J CONSTR STEEL RES, DOI [10.1016/jjcsr.2019.05.048, DOI 10.1016/JJCSR.2019.05.048]

[7] Cross laminated timber (CLT): overview and development [J].

Brandner, R. ;

Flatscher, G. ;

Ringhofer, A. ;

Schickhofer, G. ;

Thiel, A. .

EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS, 2016, 74 (03) :331-351

[8] Structural testing series: Part 13 - Identification and level I damage detection of the Z24 highway bridge [J].

Brincker, R ;

Andersen, P ;

Cantieni, R .

EXPERIMENTAL TECHNIQUES, 2001, 25 (06) :51-57

[9]

Brincker R, 2000, PROC PROC 18 INTERNA

[10]

Buchanan A.H., 1999, Environmental Science Policy, V2, P427, DOI [10.1016/S1462-9011(99)00038-6, DOI 10.1016/S1462-9011(99)00038-6]

← 1 2 3 4 5 6 7 →