On the basis of earthquake - resistant behavior experiments of high strength concrete column reinforced with concrete filled steel tube , two methods for calculating flexural strength of the column , one is based upon the method in building code for calculating the flexural strength of reinforced concrete member while the other is based upon the method of superposition , are discussed , and the moment ? xial load relationship is also analyzed using finite element method . the results are in good agreement with the experimental ones 本文在以钢管混凝土为核心的高强混凝土柱(钢管高强混凝土核心柱)的抗震性能的试验基础上,分别基于钢筋混凝土构件的规范计算方法和叠加法两种思路讨论了核心柱的正截面强度计算,并用条带有限元方法模拟了核心柱的弯矩? ?轴力相关曲线,与试验结果符合较好。
In the present work , the causing of high noise of multi - effect falling film evaporator was introduced in detail . based on the result of modern test technology , the relationship of noise and work presser was received . ground on the method of superposition , the noise of raw material pump was separated from the mixed noise and gets the true noise of steam - jet - ejector 本文对三效降膜蒸发器设备工作时,噪声产生的机理进行了理论分析与研究,利用现代声学测试技术手段进行测试与分析,得出三效降膜蒸发器设备的整体噪声随热压泵工作压力增大而增大的关系,利用噪声叠加原理,将三效降膜蒸发器设备的物料泵噪声作为背景噪声,计算得出三效降膜蒸发器设备的热压泵真实噪声,因而得出热压泵噪声亦随其工作压力增大而增大的关系。
On the basis of seismic behavior experiments of high strength concrete columns reinforced with concrete filled steel tube , there are two methods for calculating flexural strength of the column being discussed . one method is based upon the method in building code for calculating the flexural strength of reinforced concrete member , while the other is based upon the method of superposition 在核心柱抗震性能的试验基础上,分别基于钢筋混凝土构件的规范计算方法和叠加法两种思路讨论了核心柱的正截面强度计算,并用条带有限元方法模拟了核心柱的弯矩- - -轴力相关曲线,与试验结果符合较好。