發(fā)布時(shí)間：2018-10-14 11:07

【摘要】：合理選擇本構(gòu)模型是土動(dòng)力學(xué)問(wèn)題數(shù)值模擬中的一項(xiàng)重要工作。利用PLAXIS 2D軟件的土工實(shí)驗(yàn)?zāi)�擬功能分別對(duì)4種常用的巖土本構(gòu)模型——線彈性模型、摩爾庫(kù)倫模型、土體硬化模型和小應(yīng)變土體硬化模型在往復(fù)荷載下的理論滯回曲線進(jìn)行了對(duì)比分析,并在此基礎(chǔ)上研究了選擇不同本構(gòu)模型對(duì)自由場(chǎng)地震反應(yīng)分析結(jié)果的影響以及不同本構(gòu)模型中各參數(shù)的變化對(duì)場(chǎng)地動(dòng)力計(jì)算結(jié)果的敏感性分析。研究結(jié)果為土動(dòng)力學(xué)問(wèn)題數(shù)值模擬中如何選擇本構(gòu)模型和合理判斷數(shù)值分析結(jié)果提供了參考依據(jù)。
[Abstract]:Reasonable selection of constitutive model is an important work in numerical simulation of soil dynamics. By using the geotechnical experiment simulation function of PLAXIS 2D software, four kinds of geotechnical constitutive models, namely linear elastic model, Moore Coulomb model, are studied respectively. The theoretical hysteretic curves of soil hardening model and small strain soil hardening model under reciprocating load are compared and analyzed. On this basis, the influence of choosing different constitutive models on the results of free field seismic response analysis and the sensitivity analysis of the variation of parameters in different constitutive models to the results of site dynamic calculation are studied. The results provide a reference for the selection of constitutive model and the reasonable judgment of numerical analysis results in soil dynamics numerical simulation.
【作者單位】： 石家莊鐵道大學(xué)土木工程學(xué)院;
【基金】：河北省大型基礎(chǔ)設(shè)施防災(zāi)減災(zāi)協(xié)同創(chuàng)新中心項(xiàng)目 河北省重點(diǎn)學(xué)科建設(shè)項(xiàng)目(橋梁與隧道工程)
【分類(lèi)號(hào)】：TU435
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本文編號(hào)：2270270