PKPM算结构时,x y方向位移都大于了1.5,其他的数据都没问题,到底是怎么回事
推荐回答(2个)
哎强制楼板刚性假定算层间位移比啊位移应该用刚性楼板假定 层间位移比要反映结构整体扭转仅计算某薄弱环节位移比能说明问题 位移要看薄弱环节所应该刚性楼板假定 PKPM默认楼板除厚度0外都刚性板所般说否设置刚性板计算影响并手设置许弹性板(或者设许厚度0板)候否强制刚性楼板假定才明显同 要先看看SATWE数据前置处理菜单调整信息页面梁刚度放系数取2010版自计算前版本都要手填写默认数值1.0符合现浇混凝土结构数值意义考虑楼板梁翼缘(翼缘度取值见混凝土规范)梁刚度增少用理论力找典型尺寸梁自计算其实算T型截面矩形截面惯性矩比值简单般说没超300x800梁放系数都取2.0相于梁刚度增加倍边梁刚度增加50%极减位移计算值 位移比实够般用全楼柱全部加强应该析结构看看震作用整体空间振图强化薄弱环节至于强化办除增柱截面数量增混凝土标号没增截面增加柱数量效罢增与柱连接梁截面能起提高刚度作用我抗震用强柱弱梁原则梁刚度太其实利于抗震 所算要改案用全部都改局部加强应该问题吧 楼说扭转太位移其实没必关系扭转太影响层间位移比觉层间位移比比位移疼参数调整难度更高刚性楼板假定看看否于1.5(部标准要求1.4)搞第二周期扭转疼啊
1、程序调整:SATWE程序不能实现。
2、结构调整:只能通过调整改变结构平面布置,减小结构刚心与质心的偏心距;调整方法如下:
1)由于位移比是在刚性楼板假定下计算的,结构最大水平位移与层间位移往往出现在结构的边角部位;因此应注意调整结构外围对应位置抗侧力构件的刚度,减小结构刚心与质心的偏心距。同时在设计中,应在构造措施上对楼板的刚度予以保证。
2)对于位移比不满足规范要求的楼层,也可利用程序的节点搜索功能在SATWE的“分析结果图形和文本显示”中的“各层配筋构件编号简图”中,快速找到位移最大的节点,加强该节点对应的墙、柱等构件的刚度。节点号在“SATWE位移输出文件”中查找。也可找出位移最小的节点削弱其刚度,直到位移比满足要求。
2、结构调整:只能通过调整改变结构平面布置,减小结构刚心与质心的偏心距;调整方法如下: 1)由于位移比是在刚性楼板假定下计算的,结构最大水平位移与层间位移往往出现在结构的边角部位;因此应注意调整结构外围对应位置抗侧力构件的刚度,减小结构刚心与质心的偏心距。同时在设计中,应在构造措施上对楼板的刚度予以保证。 2)对于位移比不满足规范要求的楼层,也可利用程序的节点搜索功能在SATWE的分析结果图形和文本显示中的各层配筋构件编号简图中,快速找到位移最大的节点,加强该节点对应的墙、柱等构件的刚度。节点号在SATWE位移输出文件中查找。也可找出位移最小的节点削弱其刚度,直到位移比满足要求。
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