本文選題：彈性反應(yīng)譜 + 阻尼修正系數(shù)�。� 參考：《振動(dòng)與沖擊》2017年08期

【摘要】：針對(duì)目前提出的多種阻尼修正系數(shù)計(jì)算公式,選取了120條II類場(chǎng)地強(qiáng)震記錄建立了10%、20%、30%三種不同阻尼比的高阻尼反應(yīng)譜,通過(guò)比較精確譜和近似譜對(duì)5種典型計(jì)算公式的適用性進(jìn)行分析。鑒于位移譜和加速度譜之間的轉(zhuǎn)換是建立在擬譜關(guān)系上,且這種關(guān)系僅在結(jié)構(gòu)阻尼較小以及忽略正余弦差異時(shí)才成立,因此對(duì)適用于建立高阻尼加速度譜和位移譜的阻尼修正系數(shù)計(jì)算公式分別進(jìn)行了評(píng)價(jià)。通過(guò)分析可知,對(duì)II類場(chǎng)地而言,LinChang和中國(guó)建筑抗震設(shè)計(jì)規(guī)范建議的阻尼修正系數(shù)計(jì)算公式分別在估計(jì)高阻尼位移譜和加速度譜時(shí)有較好的適用性。
[Abstract]:According to the formulas for calculating damping correction coefficient, 120 strong earthquake records of class II sites are selected to establish the high damping response spectrum of 10 different damping ratios of 20% and 30%. The applicability of five typical formulas is analyzed by comparing the exact spectrum and approximate spectrum. Since the transformation between the displacement spectrum and the acceleration spectrum is based on the pseudospectral relationship, the relationship is only established when the damping of the structure is small and the sinusoidal difference is ignored. Therefore, the formulas for calculating damping correction coefficients suitable for establishing high damping acceleration spectrum and displacement spectrum are evaluated respectively. Through the analysis, it can be seen that the formulas of damping correction coefficient proposed by LinChang and Chinese Code for Seismic Design of buildings are suitable for estimating high damping displacement spectrum and acceleration spectrum, respectively.
【作者單位】： 中鐵第一勘察設(shè)計(jì)院集團(tuán)有限公司;同濟(jì)大學(xué)橋梁工程系;
【基金】：中國(guó)博士后科學(xué)基金資助(2014M562526XB) 國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(2013CB036302)
【分類號(hào)】：TU352.11

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