【摘要】：為揭示貼坡式擋墻墻后土體與擋墻間接觸參數(shù)對(duì)擋墻土壓力及位移分布的影響,基于有限元非線性接觸分析,對(duì)接觸單元法向剛度、切向剛度以及摩擦系數(shù)敏感性進(jìn)行研究。結(jié)果表明,接觸單元參數(shù)變化對(duì)土壓力的分布沒(méi)有顯著影響,但對(duì)擋墻位移影響較大;其中法向剛度和切向剛度是影響擋墻位移的主要因素;當(dāng)法向剛度取值在擋墻和土體變形模量之間,切向剛度取值比法向剛度小0~3個(gè)量級(jí)時(shí),計(jì)算結(jié)果較為合理可信。
[Abstract]:In order to reveal the influence of contact parameters between soil and retaining wall on the distribution of earth pressure and displacement of retaining wall, the normal stiffness, tangential stiffness and sensitivity of friction coefficient of contact element were studied based on the nonlinear contact analysis of finite element method. The results show that the change of contact element parameters has no significant effect on the distribution of earth pressure, but has a great effect on the displacement of the retaining wall, among which the normal stiffness and tangential stiffness are the main factors affecting the displacement of the retaining wall. When the normal stiffness is between the retaining wall and the soil deformation modulus, and the tangential stiffness is 0 ~ 3 orders of magnitude less than the normal stiffness, the calculated results are reasonable and reliable.
【作者單位】： 四川大學(xué)水力學(xué)與山區(qū)河流開(kāi)發(fā)保護(hù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展“973”計(jì)劃項(xiàng)目(2015CB057903) 國(guó)家自然科學(xué)基金項(xiàng)目(51079092)
【分類號(hào)】：TU476.4

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