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Optimal Design of Control Devices of Three-dimensional Building Structure

Author: ZengZuo
Tutor: ZhangJianLin
School: Xiamen University
Course: Structural Engineering
Keywords: Building structure Vibration Control Tuned mass damper Optimal Controller Design
CLC: TU352.1
Type: Master's thesis
Year: 2009
Downloads: 31
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Abstract


Vibration control technology in civil engineering is booming, and many of the new control system and control device. Vibration control technology use in civil engineering, also produced a number of new areas of research, the controller optimization design problem will be one of them. Controller design generally includes two aspects: First, the the passive controller parameters optimization or active controller optimal selection of the control law; controller number and installation location optimization on the basis of previous studies, based on the structure bi-level earthquake under the optimized design of the three-dimensional structure of the control system of passive controller response in the frequency domain, from the point of view of energy, mainly to complete the following tasks: (1) the three-dimensional structure of the control system damper optimization design . First establish the dynamic model of a three-dimensional solid structure, corresponding to the time domain controller performance index J and AJ optimize passive controller number and installation location, according to this indicator, the mode pattern search method optimized damper parameters, the examples show that the bi-level earthquake, the lateral displacement of the building structure can be effectively controlled. Through the floor in the bi-level earthquake response spectrum study damper can effectively optimize the design after the reduction of the oscillator (devices) acceleration response spectrum peak, from the other hand to verify the correct the damper design method proposed in this paper. sex; damper mounting position optimization method based on the quadratic performance index, the optimal control system controller removal performance increment contribution to the optimal control system as a controller, and the number of controllers to do to determine the economic guidelines and quantitative analysis of the optimal controller position, numerical analysis, this paper, the number of controllers, position and parameter optimization method is not only easy to implement, and highly effective. (2) three-dimensional structure of the control system tuned mass damper (Tuned Mass Damper) to optimize the design. First, the establishment of the the joint kinetic equations of the three-dimensional control system in the bi-level earthquake, using the simplex method to optimize the objective function J draw bi-TMD optimal stiffness and optimum damping, count cases of bi-TMD control system can be on the side of the structure The response to the displacement and torsion control. In order to compare with the bi-directional the TMD control the system, the settlements along the horizontal direction of the earthquake in the structure of the top-level one the TMD pattern search method to optimize the design example indicates that the installation the two TMD than bidirectional TMD can better control structure torsion response . Finally a new performance index J the 1 control structure in a two-tier response numerical example shows that not only have good control of the specified two-tier response also The response from the other floors also have good control effect, indicating that the objective function J 1 is feasible.

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CLC: > Industrial Technology > Building Science > Building structure > Special Structure > Anti - shock structure,disaster prevention structures > Shock, isolation, and explosion-proof structure
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