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
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.
2009, Vol. 28 
