Multi Tower Structure Under Random Loading SSI Effect Damping Technology Parameter Optimization Design

TMD is the main method for seismic control and wind resistance of high-rise building structures.The adaptability of the structural system frequency and control parameters play a decisive role in the control effect.The overlook soil effection on the superstructure of the existing specifications makes the TMD-structure vibration control with less availability.In addition,the deterministic analysis is difficult to reflect the stochastic characteristics of seismic excitation and the difference in the dynamic characteristics of the structure in the nonlinear response stage have always been the two shortcomings of the TMD parameter matching problems.Therefore,the development of random nonlinear optimal design,which is suitable for the characteristics of building structures,has become a hot topic.The following researches work have been done in this article:(1)Pointing at the shortcomings of the double-chain quantum genetic algorithm,through the research of the selection indexes of the rotation angle direction and size,we develop an improved optimization algorithm that is suitable for the particularity of the optimal design of the building structure,and which overcomes the local optimal solution,and improves the convergence accuracy and efficiency of the algorithm.(2)According to the “Hilbert-Huang Transform(Hilbert-Huang Transform,HHT)”,artificial waves with random characteristics under different site conditions are obtained to study the random process of ground motion acceleration.By compared with the actual ground motion acceleration time-history curve,it has been found that there is a good match between the two,which shows that the random ground motion generated by the method selected in this paper is reasonable and comprehensive.(3)The optimization design of optimal control parameters for TMD(Tuned Mass Damper,TMD)structures is studied.Based on reliability theory,the displacement constraints are extended to the reliability level,and the effection of soil-structure interaction(SSI)are considered.It shows that: TMD control can play a good damping effect on the response of the structure.(4)Based on the principle of energy analysis,this optimal distribution of the parameters and position of viscous dampers in multi-tower structure is studied.The research shows that the optimal parameters and position of the viscous dampers in the multi-tower structure damping control are different from those of the general high-rise structure.Therefore,when the multi-tower structure is subjected to damping control,the layout of the general high-rise structure cannot be used,and the damper should be arranged according to the characteristics of the multi-tower structure.The innovations in this paper are as follows:(1)Based on the quantum genetic algorithm,the parameters of the rotation angle are properly improved,and a more advanced improved adaptive double-chain quantum genetic algorithm is obtained,which is successfully applied in the field of civil engineering.(2)Based on the probability density evolution method,the structural displacement constraint under random load is extended to the reliability level,and an improved adaptive double-linked quantum genetic algorithm with reasonable reliability and minimum displacement between structural layers is developed,which not only improves the optimization efficiency but also increases the engineering applicability of the optimization algorithm.