首页/ 题库 / [问答题]对于吊车的动力系数,《荷载规范》5.3.的答案

对于吊车的动力系数,《荷载规范》5.3.1条规定"吊车竖向荷载应乘以动力系数";而《钢规》3.1.6条关于动力系数的规定中,没有特别指出局限于"竖向荷载",似乎意味着吊车横向荷载也要乘以动力系数。如何理解?

问答题
2021-09-17 15:47
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正确答案

依据《荷载规范》5.1.2条的条文说明,吊车水平荷载分为纵向和横向.分别由吊车的大车和小车的运行机构在启动或制动时引起的惯性力引起,因此,笔者理解,其本身已经考虑了动力影响,故不需要再乘以动力系数。《钢规》3.2.2条规定的"卡轨力"也是考虑了动力影响的。王国周《钢结构原理与设计》、夏志斌《钢结构原理与设计》等教材均支持此观点。


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