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| Vibration-based cable tension identification of a beam string structure (Ⅰ) :parameter analysis of dynam ic behavior |
| ZHANG Yu-xin1, LI Guo-qiang2, ZHAO Shi-feng1 |
| 1. Schoo l of A rchitectural and C iv il Eng. , Shanghai Norm a lUn iversity, Shangha i 201418, Ch ina;2. Schoo l o f C iv il Eng. , Tong jiUn iversity, Shangha i 200092, China |
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Abstract Based on mechanical properties of a beam string structures ( BSS), the vibration model of the side cable
at lower chord of the BSS was proposed first.The implicit free vibration solution of the cable was obtained by analyzing the
vibration model here in. The solution reflected the recurrent relationship among cable tension, natural frequencies, flexural
rigidity and boundary conditions. Based on the solution, nonlinear numerical computation was conducted to study how
flexural rigidity and boundary conditions influenced the free vibration properties of the cable by introducing a set of dimensionless
parameters, which represented flexural rigidity and boundary conditions, respectively. Some instructive conclusions
were obtained here in. Furthermore, the preliminary identification model was proposed according to the above analysis.
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Received: 01 January 1900
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2009, Vol. 28 
