Finite element coupling-based optimal design method for seismic damper of hydraulic aqueduct

By using a finite element coupling-based optimization design method for seismic dampers in hydraulic aqueducts, the problem of unreasonable damper parameter matching in traditional design was solved, and the stability and functional continuity of the aqueduct structure under strong earthquakes were improved. Through multi-objective optimization algorithms and nonlinear mapping relationships, the damper configuration was optimized, and the response of key parts was significantly reduced.

CN122113512APending Publication Date: 2026-05-29BEIJING BRACE DAMPING TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING BRACE DAMPING TECH CO LTD
Filing Date
2026-03-03
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Traditional seismic design methods cannot accurately reflect the complex coupling relationship between the hydraulic aqueduct structure and the damper, resulting in unreasonable damper parameter matching, which cannot effectively reduce vibration and may cause secondary structural damage or functional failure. Furthermore, the optimization of damper arrangement lacks systematicity and has poor engineering applicability.

Method used

The optimization design method for seismic dampers in hydraulic aqueducts based on finite element coupling establishes a finite element analysis model that includes the aqueduct structure, water dynamics, and support system. Target seismic motion input is applied to obtain response characteristic parameters of key components. Sensitivity analysis of damper parameters is performed, a nonlinear mapping relationship is constructed, and a multi-objective optimization algorithm is used to jointly optimize the damper type, location, and key parameters. The parameters are adjusted to minimize the seismic response control index.

Benefits of technology

It significantly improves the structural stability and functional continuity of hydraulic aqueducts under strong earthquake conditions, reduces the response of key parts, effectively suppresses torsional failure and vertical resonance, and improves the adaptability and engineering robustness of damper configuration schemes.

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Abstract

The application discloses a method for optimizing the design of an anti-seismic damper of a water conveyance channel based on finite element coupling, and particularly relates to the technical field of damper optimization. A finite element coupling analysis model is established, which comprises a conveyance channel structure, a water body dynamic action, a support system and an anti-seismic damper. Earthquake input is applied, and response characteristics such as node acceleration, displacement peak value, shear force and bending moment are extracted. A horizontal bridge transverse corner drift rate index and vertical acceleration concentration factor are constructed as response control indexes. The sensitivity of damper parameters is analyzed through multiple regression and Sobol methods, and a nonlinear mapping relationship is constructed. A multi-objective optimization algorithm is used to jointly optimize the damper type, arrangement position and parameters, with the minimum control index as the target. The optimal solution is substituted back to verify the response control effect. If there is still an abnormal response, local iterative optimization is performed. The method can realize efficient response control and intelligent configuration of the damper under the action of an earthquake, and significantly improves the anti-seismic performance and operation reliability.
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