引用本文摘 ? 要：為了分析和對比不同隔振方案下混凝土框架結構的抗震性能，建立了混凝土框架三維模型，設定基礎隔振、2層隔振、4層隔振和6層隔振四種隔振方案，對地震輸入參數和隔振支座參數進行了研究，依據SAP軟件內置的EL波和CPC波，分析了模型的基礎剪應力、層間剪應力和頂層結構加速變化規律。結果表明：不同地震波輸入后，有隔振的模型層間剪應力、基礎剪應力和頂層加速度相較于無隔振方案均大幅降低，但水平方向上差別不大；采用基礎隔振和2層隔振后，模型的基礎剪應力從10 988~13 666 kN降至2 366~3 544 kN，降低幅度達73%~81%；四種隔振方案的綜合評價值分別為0.89、0.91、0.83和0.70，其中，2層隔振方案的施工成本和抗震性能均最優，基礎隔振方案次之，但施工成本稍高，4層和6層隔振方案較差。 Abstract: In order to analyze and compare the seismic performance of concrete frame structure under different vibration isolation schemes, a three-dimensional model of concrete frame structure was established, and four vibration isolation schemes were set for foundation vibration isolation, 2-story vibration isolation, 4-story vibration isolation, and 6-story vibration isolation, and the seismic input parameters and vibration isolation support parameters were studied. According to the built-in EL wave and CPC wave of SAP software, the variation laws of foundation shear stress, interlayer shear stress and acceleration of top structure of the model were analyzed. The results show that after different seismic waves are input, the interlayer shear stress, ?foundation shear stress and top floor acceleration of the vibration isolation model are significantly reduced compared with those without vibration isolation scheme, but there is little difference in the horizontal direction. For foundation vibration isolation and 2-story vibration isolation, the foundation shear stress of the model decreases from 10 988~13 666 kN to 2 366~3 544 kN, with a reduction range of 73%~81%. The comprehensive evaluation values of the four vibration isolation schemes are 0.89, 0.91, 0.83 and 0.70 respectively. Among them, the construction cost and seismic performance of the 2-story vibration isolation scheme are the best, and the foundation vibration isolation scheme is the second, but the construction cost is slightly higher, and the 4-story and 6-story vibration isolation schemes are poor.
盧紅霞,周振綱.不同隔振方案下混凝土框架結構的抗震性能對比與優化分析[J].混凝土與水泥制品,2021(10):72-76. LU H X,ZHOU Z G.Analysis of Seismic Performance of Concrete Frame Structure Under Different Vibration Isolation Schemes[J].China Concrete and Cement Products,2021(10):72-76.