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为研究非对称连体结构在多维地震作用下的反应,利用有限元软件建立非对称连体结构的分析模型,考虑地震竖向扭转分量的影响,分析非对称连体结构在汶川地震波和El-Centro地震波3种工况下(单向、双向、双向加扭转)的地震反应,得到非对称连体结构的层间位移角曲线、扭转角曲线、轴力图、剪力图和扭矩图.结果表明:在相同地震波作用下,非对称连体结构的层间位移角、扭转角、轴力、剪力及扭矩在多维地震作用下明显大于单向地震作用下.地震的竖向扭转分量对非对称连体结构的扭转角和扭矩影响较大.在不同地震波作用下,非对称连体结构的层间位移角、扭转角、轴力、剪力及扭矩在El地震作用下要明显大于汶川地震作用下.所以对非对称连体结构进行多维、多组地震作用下的分析很有必要.
In order to study the response of asymmetric Siamese structures under multidimensional earthquakes, an analytical model of asymmetric Siamese structures was established by using finite element software. Taking into account the influence of vertical torsional components of the earthquake, the unsymmetrical Siamese structures were analyzed in Wenchuan earthquake and El- Centro seismic wave under the three conditions (unidirectional, bidirectional, bidirectional and torsional), the displacement angle curve, torsion angle curve, axial force diagram, shear force diagram and torque diagram of the asymmetric two-body structure are obtained.The results show that: Under the action of the same seismic wave, the displacement angle, torsion angle, axial force, shear force and torque of the asymmetric Siamese structure are obviously larger than that of the unidirectional earthquake under the action of multi-dimensional seismic. The torsional angle and torsional moment of the body structure are greatly affected by the seismic wave, and the displacement angle, torsion angle, axial force, shear force and torque of the asymmetric two-story structure under the action of El earthquake are obviously larger than those under the Wenchuan earthquake Therefore, it is necessary to carry out multi-dimensional and multi-group seismic analysis of asymmetric Siamese structures.