Rapid analysis method for dynamic characteristics of three-span self-anchored suspension bridge
A self-anchored suspension bridge, rapid analysis technology, applied in special data processing applications, instruments, electrical and digital data processing, etc. And other issues
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[0058] see figure 1 — figure 2 , a refined and rapid analysis method for the dynamic characteristics of a three-span self-anchored suspension bridge, characterized in that the method includes the following steps:
[0059] The first step: according to figure 1 The dynamic model shown is to calculate the additional cable force h of each cable section of the main cable divided by the boom j and the dimensionless mode shape function And the dimensionless mode shape function of each beam section of the main beam
[0060] Step 2: Calculate the sag matrix B of each cable segment (i) , combined with the node displacement continuity condition and force balance condition to calculate the intermediate matrix C (i) and D (i) , and then according to Calculation element dynamic stiffness matrix K (i) ;
[0061] Step 3: Superimpose the stiffness contributions of each cable segment and spring to the system, and group the dynamic stiffness matrix of each unit to obtain the overal...
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