ANALYTICAL INVESTIGATION OF THE VIBRATION PERFORMANCE OF TIE RODS WITH SENSITIVITY ANALYSIS OF EFFECTIVE FACTORS ON BEAM FREQUENCY

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GERAMI M.; SIAHPOLO N.

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Journal: Sharif Journal of Civil Engineering Year:2016 | Volume:32-2 | Issue:1.1 Page(s): 77-89

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Title

ANALYTICAL INVESTIGATION OF THE VIBRATION PERFORMANCE OF TIE RODS WITH SENSITIVITY ANALYSIS OF EFFECTIVE FACTORS ON BEAM FREQUENCY

Author(s)

GERAMI M. | SIAHPOLO N. | Issue Writer Certificate

Keywords

TIE RODQ2

BOUNDARY CONDITIONQ2

FUNDAMENTAL FREQUENCYQ2

FLEXURAL STIFFNESSQ2

AXIAL LOADQ2

Abstract

The historical application of TIE RODs in historical buildings was used in the past to ensure the stability of arches and vaults against gravity and horizontal loads. Therefore, the necessity of TIE ROD health monitoring is a prevalent subject in the vulnerability assessment of historical buildings. The main purpose of this research is to evaluate the dynamic characteristics of TIE RODs. Also, the effect of several parameters, such as known and unknown BOUNDARY CONDITIONs, length and cross section, FLEXURAL STIFFNESS and AXIAL LOAD, on FUNDAMENTAL FREQUENCY, has been evaluated. As a result, after a series of analytical modeling, practical graphs for three types of beam end connection have been developed. It is possible to calculate axial force with the FUNDAMENTAL FREQUENCY of in-situ testing with the proposed graphs. Results showed that the frequency is sensitive to all the aforementioned factors. For instance, under known BOUNDARY CONDITION, the effect of the support type is more tangible for long span beams. Also, under constant tensile stress, changes in the BOUNDARY CONDITION of TIE RODs with small cross sections did not affect the frequency considerably. Furthermore, length factors for a pinned-pinned beam with small tensile force are not sensitive in comparison with other support conditions. Comparison of analytical results of AXIAL LOAD and FLEXURAL STIFFNESS with experimental data of reference 1, showed an acceptable conformity between them. The maximum error for tensile stress was calculated as 12%. This error was 5% for compressive stress. Furthermore, analytical FLEXURAL STIFFNESS approached a full rigid support condition, while tensile force increased. This is due to the geometric effect of tensile force on the stiffness matrix of the beam. Also, for unknown BOUNDARY CONDITIONs, estimated buckling force, regarding Newmark's analytical formulation, had 3.1% error, with the corresponding force from in-situ dynamic testing obtained from reference 1.

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APA: Copy

GERAMI, M., & SIAHPOLO, N.. (2016). ANALYTICAL INVESTIGATION OF THE VIBRATION PERFORMANCE OF TIE RODS WITH SENSITIVITY ANALYSIS OF EFFECTIVE FACTORS ON BEAM FREQUENCY. SHARIF: CIVIL ENINEERING, 32-2(1.1), 77-89. SID. https://sid.ir/paper/128216/en

Vancouver: Copy

GERAMI M., SIAHPOLO N.. ANALYTICAL INVESTIGATION OF THE VIBRATION PERFORMANCE OF TIE RODS WITH SENSITIVITY ANALYSIS OF EFFECTIVE FACTORS ON BEAM FREQUENCY. SHARIF: CIVIL ENINEERING[Internet]. 2016;32-2(1.1):77-89. Available from: https://sid.ir/paper/128216/en

IEEE: Copy

M. GERAMI, and N. SIAHPOLO, “ANALYTICAL INVESTIGATION OF THE VIBRATION PERFORMANCE OF TIE RODS WITH SENSITIVITY ANALYSIS OF EFFECTIVE FACTORS ON BEAM FREQUENCY,” SHARIF: CIVIL ENINEERING, vol. 32-2, no. 1.1, pp. 77–89, 2016, [Online]. Available: https://sid.ir/paper/128216/en

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