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混凝土柱(鋼管高強混凝土核心柱)的抗震性能的試驗基礎上,分別基于鋼筋混凝土構件的規范計算方法和疊加法兩種思路討論了核心柱的正截面強度計算,并用條帶有限元方法模擬了核心柱的彎矩? ?軸力相關曲線,與試驗結果符合較好。
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 本文對三效降膜蒸發器設備工作時,噪聲產生的機理進行了理論分析與研究,利用現代聲學測試技術手段進行測試與分析,得出三效降膜蒸發器設備的整體噪聲隨熱壓泵工作壓力增大而增大的關系,利用噪聲疊加原理,將三效降膜蒸發器設備的物料泵噪聲作為背景噪聲,計算得出三效降膜蒸發器設備的熱壓泵真實噪聲,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基礎上,分別基于鋼筋混凝土構件的規范計算方法和疊加法兩種思路討論了核心柱的正截面強度計算,并用條帶有限元方法模擬了核心柱的彎矩- - -軸力相關曲線,與試驗結果符合較好。