【摘要】：邊坡的動(dòng)力穩(wěn)定性分析一直是巖土工程領(lǐng)域的難點(diǎn)。為研究矢量和法在三維邊坡動(dòng)力穩(wěn)定性分析中的應(yīng)用,從三維均質(zhì)邊坡出發(fā),給出了一種將矢量和法與動(dòng)力有限元法相結(jié)合的三維邊坡動(dòng)力穩(wěn)定性分析方法,并給出其具體計(jì)算過程。最后,將該方法運(yùn)用到大型堆積體邊坡的動(dòng)力穩(wěn)定性分析中。該邊坡的動(dòng)力分析表明,三維邊坡動(dòng)力響應(yīng)規(guī)律受地形的影響很大,堆積體對(duì)地震波具有較好的吸收效果;在6.5級(jí)地震(峰值加速度0.2 g)作用下,穩(wěn)定性計(jì)算表明,堆積體Q1與Q2的平均安全系數(shù)分別為1.47,1.23,最小安全系數(shù)分別為1.33,1.18,可認(rèn)為邊坡在該地震荷載下能夠保持穩(wěn)定。
[Abstract]:The dynamic stability analysis of slope is always a difficult point in geotechnical engineering. In order to study the application of vector sum method in the dynamic stability analysis of three dimensional slope, a method of dynamic stability analysis of three dimensional slope is presented, which combines vector sum method with dynamic finite element method. The calculation process is also given. Finally, the method is applied to the dynamic stability analysis of large-scale accumulative slope. The dynamic analysis of the slope shows that the dynamic response law of the 3D slope is greatly affected by the topography, and the accumulative body has a better effect on absorbing the seismic wave, and the stability calculation shows that under the action of the earthquake with M = 6.5 (peak acceleration 0.2 g), the dynamic response of the slope is affected greatly by the topography. The average safety factors of Q1 and Q2 are 1.47 and 1.23, respectively, and the minimum safety factors are 1.33 and 1.18, respectively. It can be concluded that the slope can be kept stable under the earthquake load.
【作者單位】： 中國科學(xué)院武漢巖土力學(xué)研究所巖土力學(xué)與工程國家重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大學(xué);
【基金】：國家自然科學(xué)基金資助項(xiàng)目(41302236,51674239)~~
【分類號(hào)】：TU435;TU457

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