粘滞阻尼器加固混凝土框架减震性能数值模拟

Numerical Simulation of Seismic Performance of Concrete Frames Structures Reinforced by Viscous Damper

摘要: 为减少修复或重建建筑的成本，提高现有建筑的抗震能力是一种更为经济的措施。研究表明，为结构附加消能构件是增强抗震能力的有效方法之一。虽然大型振动台试验是验证结构抗震性能的最有效手段，但其成本高昂，难以大规模应用。基于此数值模拟作为一种高效且经济的研究方法，能够模拟混凝土框架结构在地震作用下的动态响应，分析其薄弱部位并优化加固方案。本文通过多种数值模拟软件建立混凝土框架结构模型，分析结构的动力特性、确定结构薄弱位置，选取典型EL-Centro地震波作为输入，分析其时程响应特性，并在模拟中引入粘滞阻尼器，探讨其抗震性能的提升效果。

Abstract: To reduce the cost of repairing or reconstructing buildings, improving the seismic capacity of existing buildings is a more economical measure. Research shows that adding energy dissipation components to the structure is one of the effective methods to enhance seismic capacity. Although the large-scale shaking table test is the most effective means to verify the seismic performance of the structure, its cost is high and it is difficult to apply on a large scale. Based on this, numerical simulation, as an efficient and economical research method, can simulate the dynamic response of the concrete frame structure under earthquake action, analyze its weak parts and optimize the reinforcement scheme. In this paper, through multiple numerical simulation software, a concrete frame structure model is established to analyze the dynamic characteristics of the structure, determine the weak positions of the structure, select the typical EL-Centro earthquake wave as the input, analyze its time-history response characteristics, and introduce viscous dampers in the simulation to explore the improvement effect of its seismic performance.