【摘要】 利用ANSYS软件,并采用一致与非一致Taft波,对长度为105~210 m的3层混凝土框架作了大规模弹性时程分析。在此基础上,得到了柱弹性内力行波效应变化规律:最大内力出现时间后移;柱剪力随结构长度的增大而减小;柱弯矩随结构长度的增大其1,2层柱弯矩值会增大、3层柱弯矩值会减小;柱轴力随结构长度的增大,变化的幅度不超过1%;在200~500m/s波速范围内,波速改变对柱内力影响可忽略,变化幅度不超过2%。更多还原

【Abstract】 With the help of ANSYS,the time history analysis for the behavors of a series of large models of three floors fram structure ranging from 105～210 meters,which are subjected to uniform and non-uniform excitation of TAFT has been done.Based on these analysises,the varying regulations of the fram columns’ elastic interforces,considering travling wave effect,has been gained:the appearing times of the largest interforces are postponed;columns’ shears decrease with the increasing of structure length;the columns’ moments of the first and the second floor are enlarged,while the thirst floor’ columns’ are reduced as the same reason;columns’ axial forces are nearly not changed,as the largest one is less than 1% with the change of length;the affact of speed’ changing could be ignored,which is not more than 2%,with the scope of 200～500 m/s in this paper.更多还原