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高层结构在罕遇地震作用下的动力弹塑性分析已经成为土木工程领域的研究热点。然而对复杂结构进行有限元建模时,由于不同软件关键技术的假设与条件不同,导致对于同一结构采用不同软件计算时结果差异较大。以国内外广泛使用的PERFORM-3D与ABAQUS软件为例,深入探讨了单元类型、连梁模拟、积分算法与结构阻尼等关键因素,以解决目前动力弹塑性分析结果的离散性问题,使不同软件数值计算结果更为可靠,结果对比更有价值。
The dynamic elasto-plastic analysis of high-rise structures under rare earthquakes has become a hot research topic in the field of civil engineering. However, for finite element modeling of complex structures, the assumptions and conditions of the key technologies of different softwares are different, resulting in large differences in the results obtained by using different softwares for the same structure. Taking PERFORM-3D and ABAQUS software widely used at home and abroad as examples, the key factors such as unit type, beam simulation, integral algorithm and structural damping are discussed in depth so as to solve the problem of discreteness of current dynamic elasto-plastic analysis results and make different softwares The numerical results are more reliable and the results are more valuable.