基于不同工程软件对比的密肋楼盖结构设计

Structural design of Waffle slab with comparison of different engineering software

采用基于不同力学模型的YJK软件和ETABS软件,构建三个密肋楼盖算例,算例A基于YJK软件,另外两个算例基于ETABS软件,其区别在于算例B模拟密肋梁截面的方式与算例A相同,即按照矩形截面将肋梁简化输入,算例C按照实际情况将肋梁按照梯形截面模拟。从框架柱底反力、典型位置处节点位移、典型位置处板元弯矩三个方面进行数据比对,算例A与算例B的数据比对结果验证了在均将密肋楼盖肋梁由梯形截面简化成矩形截面时,YJK软件密肋楼盖计算结果与ETBAS软件相比具有同样的准确性;算例A与算例C数据比对结果验证了在YJK软件中将密肋楼盖肋梁梯形截面简化为矩形截面输入时,其计算结果与在ETABS软件中利用Waffle板元真实模拟梯形肋梁的计算精度相当,可以满足设计要求。

With two software YJK and ETABS,whose mechanical models are different,three examples of Waffle slab are established,Case A is based on YJK software,and the other two are based on ETABS software,the difference is that case B simulates the rib beam in the same way as case A,that is,the rib beam is reduced to the rectangular section,and case C simulates the rib beam with the trapezoidal section just as its actual section.The data comparison is carried out from three aspects:the reaction force at the bottom of the frame column,the displacement of the node at the typical position,and the moment of the slab at the typical position,the comparison results of case A and case B verify that when their conditions are exactly the same,the calculation results of YJK software have the same accuracy as those of ETABS software;the comparison results of case A and case C verify that when the trapezoidal section of rib beam of Waffle slab is simplified to rectangular section in YJK software,the calculation results are equivalent to the calculation accuracy of using Waffle slab element to simulate trapezoidal rib beam in ETABS software,which can meet the design accuracy requirements.