基于“K”法的抗滑樁滑坡治理效果分析

【摘要】為了驗證抗滑樁的設(shè)計合理性及其在暴雨工況下的支擋效果，采用“K”法對樁身進行設(shè)計計算；應(yīng)用有限元數(shù)值模擬方法，對設(shè)樁前后的滑坡穩(wěn)定性進行二維有限元數(shù)值分析。數(shù)值建模過程中，巖土體和抗滑樁分別采用Mohr-Coulomb本構(gòu)模型及彈性模型。通過對設(shè)樁前后滑體的位移及剪應(yīng)力和樁身位移及彎矩的比較分析，得出研究結(jié)論：（1）在暴雨工況下，采用抗滑樁進行基巖滑坡治理是完全有效的；（2）運用抗滑樁“K”法進行抗滑樁設(shè)計計算是合理可行的；（3）在采取抗滑樁支護的基礎(chǔ)上，結(jié)合使用其它支擋結(jié)構(gòu)，如框架錨桿（錨索），滑坡的治理效果會更好。

Abstract：In order to prove the rationality of the anti-slide pile design as well as its retaining effect under the condition of rainstorm， the “K” method was taken into the design of anti-slide pile. And then the finite element numerical simulation method， through analyzing the stability of landslide that was treated by the anti-slide pile or not， was put into use in the case. In the process of numerical modeling， the rock and soil mass of slope was defined as the Mohr-Coulomb constitutive model while the anti-slide pile was supposed to be a elastic model.Comparing the displacement and shearing force of the slope in situation that was protected by the anti-slide pile with those without piles treated， then taking the displacement and bending moment that performed in the pile into account， some conclusions were carried out as follow：No.1.Under the condition of the heavy rain， the method of using the anti-slide pile was of great advantages in the landslide treatment；No.2.The K method for the design of anti-slide pile was scientific enough.No.3.Using other retaining structure such as Anchor Bar Frame Support Technology， the governance effect of landslide would be more excellent.

【關(guān)鍵詞】滑坡；抗滑樁；數(shù)值模擬；滑坡穩(wěn)定性

Keyword：Landslide； anti-slide pile； finite element numerical simulation method； landslide stability