DYNAMIC BEHAVIOR OF FLOOR SLAB WITH STIFFENER BEAM DUE TO BLAST LOAD FROM MODIFICATION OF REED EQUATION

H. K. Buwono
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Abstract

Explosions in buildings are not always the result of terrorist attacks, but can also be caused by several work accidents due to explosive tools or materials as trigger of problems in construction. Friedlander's equation has many modifications including the Reed equation. Reed proposes a modification of Friedlander equation using 4th order polynomial. The Reed equation is still not close relatively to the Friedlander equation. The Reed equation is only calculated up to t = 25/7 (s) in the negative phase. Meanwhile, the Friedlander is calculated at t = 5 if both are reviewed at no load or one unit condition. It is necessary to evaluate using the 4th order polynomial equation which is close to the Friedlander explosion equation. Dynamic behavior of structures must be considered in the design of structural elements. The purpose of this study is to analyze numerically the effect of explosions on orthotropic slabs which have partial fixity placement and stiffeners in the x direction, namely in the short span direction. The behavior of the plate orthotropic configuration, the localized blast load are centered in the middle of the strain, and the effect of thickness and stiffening on the vertical deflection of the plates are solved numerically using two auxiliary equations in the x and y-directions. From the analysis, it is found that there is vertical deflection with related to time. This paper introduces the dynamic behavior of Reed's modified blast loads with 4th order polynomial on orthotropic plates with x-direction stiffener beam.
由簧片方程修正的加劲梁楼盖在爆炸荷载作用下的动力特性
建筑物的爆炸并不总是恐怖袭击的结果,也可能是由于爆炸工具或材料引发的施工问题而引起的几次工作事故。弗里德兰德方程有很多修改,包括里德方程。Reed用四阶多项式提出了对Friedlander方程的修正。里德方程与弗里德兰德方程仍然不太接近。Reed方程只在负相计算到t = 25/7 (s)为止。同时,如果两者在空载或一机组条件下进行评审,则弗里德兰德在t = 5时计算。有必要用接近弗里德兰德爆炸方程的四阶多项式方程进行计算。结构单元的设计必须考虑结构的动力性能。本研究的目的是数值分析爆炸对x方向(即短跨方向)具有部分固结布置和加筋的正交各向异性板的影响。采用两个辅助方程在x和y方向上数值求解了板的正交各向异性、局部爆炸荷载集中在应变中间的特性,以及厚度和加筋对板垂直挠度的影响。从分析中发现,存在与时间有关的竖向挠度。本文介绍了四阶多项式里德修正爆炸荷载在x向加劲梁正交各向异性板上的动力特性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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