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软钢阻尼器作为优异的消能减震元件,在现代结构的抗震设计中,具有越来越广泛的应用。基于软钢阻尼器的应用和研究现状,根据等值线性分析方法,探讨软钢阻尼器的工程设计方法,并将该方法应用于某商业广场项目塔楼结构的减震设计分析。该塔楼高度为118.9m,框架-核心筒结构,临近地铁,在结构设计分析中,需在保证结构具有足够的承载力和良好的经济性能的前提下,对构件截面进行优化,使结构自重减轻,减少结构沉降对地铁隧道产生的不利影响。通过布置软钢阻尼器并对结构抗震性能进行对比分析,研究结果表明:布置阻尼器的结构,构件截面得到明显优化,结构总重降低,满足设计要求,结构的承载力性能与未布置软钢阻尼,未进行构件截面优化的结构保持在相同水准,同时,阻尼器的布置使得结构软钢阻尼器可延迟主体结构进入弹塑性阶段,提高结构在罕遇地震下的抗震性能。
As an excellent energy dissipation and damping element, mild steel damper has more and more extensive applications in the seismic design of modern structures. Based on the application and research status of mild steel damper, the engineering design method of the mild steel damper was discussed based on the equivalent linear analysis method. The method was applied to the design of the shock absorber in the tower structure of a commercial square project. The height of the tower is 118.9m, the frame-core tube structure is near to the subway. In the structural design analysis, it is necessary to optimize the cross-section of the structure under the premise of ensuring sufficient bearing capacity and good economic performance of the structure, so as to reduce the weight of the structure , To reduce the negative impact of structural settlement on the subway tunnel. By arranging mild steel dampers and comparing the seismic performance of the structure, the results show that the structure of the damper is obviously optimized and the total weight of the structure is reduced, which meets the design requirements. At the same time, the dampers are arranged such that the structural mild steel dampers can delay the main structure into the elasto-plastic phase and improve the anti-seismic performance of the structure under rare earthquakes.