【正文】 ty of the slope is discussed by the finite element model of the PLAXIS software. In this paper, through the screening and analysis of the numerous data, the reasonable range of parameters is obtained, and some suggestions for the engineering design are proposed. Through the analysis and parison of the numerous data, this paper draws the following conclusions of the parameters of the depth distance. From the qualitative point of view, with the decrease of the depth of the buried depth, the bearing capacity of the slope is greatly improved. From the quantitative point of view, the depth of the material is not higher than the 1/5 depth of the slope and should not exceed 1m. Through the analysis and parison of numerous data, this paper draws 河北工業(yè)大學(xué) 20xx 屆本科畢業(yè)論文 the following conclusions of the two parameters of the top depth and the bottom depth of the reinforced slope. From a qualitative point of view, the influence of the depth of the top and bottom ribs on the bearing capacity of the slope is not obvious. From the quantitative point of view, this paper suggests that the top and bottom tendons should be buried to the load center position. Through the analysis and parison of numerous data, this paper draws the following conclusions of the depth of the inner rib of the reinforced slope. Tendons within the depth and slope sliding zone are closely related, therefore this paper suggests to design in determining the internal ribs that buried depth should be determined according to the location of the slip zone. Keywords： Package type Reinforced slope Finite element Damage mechanism 河北工業(yè)大學(xué) 20xx 屆本科畢業(yè)論文 目錄 1 引言 .................................................................................................................................. 1 研究的背景及意義 ................................................................................................ 1 國內(nèi)外的研究現(xiàn)狀 ................................................................................................ 2 研究內(nèi)容 ................................................................................................................ 4 研究方法 ................................................................................................................ 5 2 筋材間距 影響分析 .......................................................................................................... 8 有限元模型建立 .................................................................................................... 8 模擬加載及數(shù)據(jù)整理 ............................................................................................ 9 數(shù)值計算結(jié)果 分析 ................................................................................................ 9 3 筋材埋深 影響分析 ........................................................................................................ 14 頂筋埋深 分析 ...................................................................................................... 14 底筋埋深 分析 ...................................................................................................... 17 內(nèi)筋埋深 分析 ...................................................................................................... 21 結(jié) 論 .................................................................................................................................. 25 參 考 文 獻(xiàn) ........................................................................................................................ 26 致 謝 .................................................................................................................................. 28 河北工業(yè)大學(xué) 20xx 屆本科畢業(yè)論文 1 1 引言 研究的背景及意義 很久之前，人類就懂得將自然界中的天然植物如茅草、柳條之類材料埋入土體中來改善土體整體穩(wěn)定性，這種材料在現(xiàn)在叫做土工合成材料。在設(shè)計工作中， 筋材的埋深間距不宜小于坡高的五分之一也不宜超過 1m。但是，受到其受到作用力時的破壞機(jī)制仍不明確的影響，設(shè)計理論尚不完善，往往都是根據(jù)以往的工程經(jīng)驗(yàn)進(jìn)行設(shè)計。顯然，這樣的設(shè)計 明顯的缺乏理論的佐證。 本文就加筋邊坡中頂筋和底筋的埋深這兩個參數(shù) 進(jìn)行分析， 得出了以下結(jié)論 ：從定性的角度而言，頂筋 與底筋的埋深對邊坡承載能力的影響并不明顯。眾所周知，土體本身具有一定的抗壓、抗剪強(qiáng)度，但是無法承受拉力?，F(xiàn)代加筋土的設(shè)計和第一個加筋構(gòu)筑物是由法國工程師 Henri Vidal 在 20 世紀(jì) 60 年代提出并實(shí)現(xiàn)的，從此利用抗拉材料作為筋材的加筋土技術(shù)從經(jīng)驗(yàn)判斷上升到理論設(shè)計階段。 正如上文所說的那般，土工合成材料在工程中的應(yīng)用十分廣泛。試驗(yàn)方式主要包括：室內(nèi)模型試驗(yàn)、離心模型試驗(yàn)和現(xiàn)場試驗(yàn)；數(shù)值方法主要包括：有限元、有限差分和離散元等。 室內(nèi)模型試驗(yàn)研究現(xiàn)狀 徐林榮，華祖焜（ 1999） [9] 他 們用紙和紗窗的窗紗代替加筋土邊坡 中的土工格柵進(jìn)行試驗(yàn)，通過獨(dú)特的理論和方法，研究了筋材的埋深，間距，坡角，等參數(shù)并對其主要的控制參數(shù)進(jìn)行了分析。同時也證明土工格柵主要通過與土體間的摩擦作用與 土體結(jié)合為一個整體而起作用。最終得出了一個定性的結(jié)論即