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 本文在以鋼管混凝土為核心的高強(qiáng)混凝土柱(鋼管高強(qiáng)混凝土核心柱)的抗震性能的試驗(yàn)基礎(chǔ)上,分別基于鋼筋混凝土構(gòu)件的規(guī)范計(jì)算方法和疊加法兩種思路討論了核心柱的正截面強(qiáng)度計(jì)算,并用條帶有限元方法模擬了核心柱的彎矩? ?軸力相關(guān)曲線,與試驗(yàn)結(jié)果符合較好。
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 本文對(duì)三效降膜蒸發(fā)器設(shè)備工作時(shí),噪聲產(chǎn)生的機(jī)理進(jìn)行了理論分析與研究,利用現(xiàn)代聲學(xué)測(cè)試技術(shù)手段進(jìn)行測(cè)試與分析,得出三效降膜蒸發(fā)器設(shè)備的整體噪聲隨熱壓泵工作壓力增大而增大的關(guān)系,利用噪聲疊加原理,將三效降膜蒸發(fā)器設(shè)備的物料泵噪聲作為背景噪聲,計(jì)算得出三效降膜蒸發(fā)器設(shè)備的熱壓泵真實(shí)噪聲,因而得出熱壓泵噪聲亦隨其工作壓力增大而增大的關(guān)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試驗(yàn)基礎(chǔ)上,分別基于鋼筋混凝土構(gòu)件的規(guī)范計(jì)算方法和疊加法兩種思路討論了核心柱的正截面強(qiáng)度計(jì)算,并用條帶有限元方法模擬了核心柱的彎矩- - -軸力相關(guān)曲線,與試驗(yàn)結(jié)果符合較好。