【正文】 .......................................................... 1 .................................................................................................. 2 （材料力學(xué)指標(biāo)） ......................................................................... 4 巖、土物理力學(xué)推薦指標(biāo) ........................................................................... 4 縱向受力鋼筋的混凝土保護層最小厚度 ................................................... 4 混泥土強度設(shè)計值 ....................................................................................... 5 普通鋼筋強度設(shè)計值 ................................................................................... 5 混凝土受壓區(qū)等效矩形應(yīng)力圖系數(shù) ........................................................... 5 相對界限受壓區(qū)高度和截面最大抵抗矩系數(shù) ........................................... 5 ..................................................................................................... 7 ............................................................................................. 8 K566+000 段邊坡支護計算 ......................................................................... 8 K566+020 段邊坡支護計算 ....................................................................... 12 K566+040 段邊坡支護計算 ....................................................................... 18 K566+060 段邊坡支護計算 ....................................................................... 22 K566+080 段邊坡支護計算 ....................................................................... 29 K566+100 段邊坡支護計算 ....................................................................... 36 K566+120 段邊坡支護計算 ....................................................................... 42 K566+140 段邊坡支護計算 ....................................................................... 47 K566+160 段邊坡支護計算 ....................................................................... 52 K566+180 段邊坡支護計算 ..................................................................... 58 ................................................................................................... 64 結(jié)論 ............................................................................................................. 64 建議 ............................................................................................................. 65 致謝 ........................................................................................................................... 66 參考文獻 ................................................................................................................... 67 1 通過在這一學(xué)期的畢業(yè)設(shè)計教學(xué)環(huán)節(jié)中，培養(yǎng)土木工程專業(yè)本科畢業(yè)生的各科綜合應(yīng)用所學(xué)基礎(chǔ)課程和專業(yè)課知識和相關(guān)技能，在設(shè)計過程中能鞏固所學(xué)的知識和創(chuàng)新能力。而對于坡體不高于 10 米都可采用重力式擋土墻來支護，支護后對于后面邊坡采用刷坡進行處理。該段道路地形復(fù)雜，地質(zhì)多 為細沙， 支護難度較大，分析其工程性質(zhì)，初步確定邊坡大多需要支護。 關(guān)鍵詞： 邊坡；擋土墻；排樁支護； 支護工程 Abstract This paper introduces the LuoyangZhanjiang railway K566+0 ~ K566+180 of the subgrade slope engineering geological conditions, the physical and mechanical properties of rock and soil, the design of the supporting scheme. The design for the total length of 180 meters, the slope height of meters, depth of meters meters of slope. This section of the road plex terrain, geological mostly sand, supporting more difficult, analyze its engineering properties, preliminary determine the slope most in need of support. Supporting types generally identified as gravity retaining wall supporting and single row pile retaining. The analysis and support generally depends on the slope of the slope height and depth, because the road is mainly used for railway with depth for the slope by gravity type retaining wall to support, support for the back slope can be directly used for treatment of slope. As for the slope is not higher than 10 meters can be used to support the gravity retaining wall, support for behind of slope by slope treatment. For more than 10 meters height of slope, generally considered suitable for the section of the single row pile retaining. The saving construction materials, the pile length for proper treatment, cost savings. The slope to slope support account of rationality, the possibility of construction, and saving the economy of. So the slope supporting design scheme to meet the slope stability under the condition of both reduce the project cost and support engineering construction is feasible and convenient. Key words:Slope。通過 畢業(yè)設(shè)計的各個環(huán)節(jié)的綜合訓(xùn)練，為畢業(yè)后盡快投入實際工作做準(zhǔn)備。線路大多沿山坡邊緣行進，通過幾個小 型溝槽，溝槽覆土較厚，多開墾為水田和旱地。 地區(qū)東、南、西三面環(huán)山，東靠騎田嶺、南倚萌渚嶺、西界都龐嶺，本地區(qū)碳酸鹽分布廣泛，巖溶較為發(fā)育，局部地段順層、弱膨脹土等工程地質(zhì)問題突出。 4 （ 材料力學(xué)指標(biāo)） 、土物理力學(xué)推薦指標(biāo)見下表： 表 巖、土物理力學(xué)推薦指標(biāo) 物理力學(xué)性 質(zhì) 土石名稱 基本承載力 σ0 (KPa) 永久邊坡率 m 臨時邊坡率 m0 容重γg/cm 凝聚力C(KPa) 內(nèi)摩擦角φ(176。 土工材料加固 采用 土工格柵為雙向格柵，幅寬 。 圖 （ 3） 確定擋土墻的斷面尺寸： 一般重力式擋土墻的頂寬約為 h/12，底寬宜?。?1/31/12)h，初步選取 頂寬為 ，底寬 b=， h=6m. （ 4） 計算主動土壓力 Ea ： mKNhE a/11423045tan*6*19*21[245(tan212222??????）（）?? 土壓力作用點離墻底距離： a 11h = h= *6= 2m33 計算擋 土墻自重及重點：將擋土墻截面分成一個矩形和一個三角形墻背垂 直光滑（ e=0， d=0， a0=0）填土面水平（ b=0）擋土墻采用毛石和 水泥砂漿 11 砌筑，墻體重度： gk=30kN/m 計算它們的延米自重： 121 *1. 9 * 6 * 30 171 /2 * 6 * 30 108 /KN mKN m??G=G= G1G2的作用點距 0 點的距離 X1X2分別為： 1 2= *1 .9 =1 .2 7 m3X 2 1= 1 .9 + * 0 .6 = 2 .2 m2X （ ） （ 7） 傾覆穩(wěn)定性驗算： 1 1 2 2 1 7 1 * 1 . 2 7 1 0 8 * 2 . 2 1 . 9 9 1 . 61 1 4 * 2taaG X G Xk Eh? ?? ? ? ? （ 8） 滑動穩(wěn)定性驗算： 12() ( 1 7 1 1 0 8 ) * 0 . 5 1 . 4 2 1 . 31 1 4 0satGGk EG ?? ?? ? ? ??? （ 9） 地基承載力驗算： ： 12 1 7 1 1 0 8 2 7 9 /N G G K N m? ? ? ? ? 0 點的距離： 1 1 2 21 1 7 1 * 1 . 2 7 1 0 8 * 2 . 2 1 . 6 3279G X G XemN? ?? ? ? ： 1 2 .5 1 .6 32 2 6bbee? ? ? ? ? ： 2 0 4 . 6 8 1 . 8 4 1 5 02 . 5Np k p a f k p ab= = = = 滿 足 要 求 m a x 1 4