重力式擋土墻課程設計--重力式擋土墻設計

1、精品文檔 重力式擋土墻課程設計作者姓名學號班級學科專業(yè)土 木 工 程指導教師所在院系建 筑 工 程 系提交日期設計任務書一、 設計題目本次課程設計題目：重力式擋土墻設計二、 設計資料 1、線路資料：建設地點為某一級公路DK23+415.00DK23+520.00段，在穿過一條深溝時，由于地形限制，無法按規(guī)定放坡修筑路堤，而采取了貼坡式仰斜式漿砌片石擋土墻。線路經(jīng)過的此處是丘陵地區(qū)，石材比擬豐富，擋土墻在設計過程中應就地選材，結(jié)合當?shù)氐牡匦螚l件，節(jié)省工程費用。2、墻后填土為碎石土，重度，內(nèi)摩擦角；墻后填土外表為水平，即，其上汽車等代荷載值；地基為礫石類土，承載力特征值；外摩擦角取；墻底與巖土摩擦

2、系數(shù)。3、墻體材料采用MU80片石，M10水泥砂漿，砌體抗壓強1.14，砌體重度。4、擋土墻布置形式及各項計算參數(shù)如下列圖所示：圖4-1擋土墻參數(shù)圖單位：m目錄設計任務書····································

3、;·············2一、設計題目···································

4、3;·········2 二、設計資料·······································&#

5、183;·····2設計計算書···········································&#

6、183;·····4一、設計擋土墻的根底埋深、斷面形狀和尺寸·················4二、主動土壓力計算······················&

7、#183;················41、 計算破裂角·······························

8、3;········42 、計算主動土壓力系數(shù)K和K1··························43、計算主動土壓力的合力作用點··········&

9、#183;··············5 三、擋土墻截面計算·································&#

10、183;·····51、計算墻身重G及力臂ZG·······························62、抗滑穩(wěn)定性驗算·········&#

11、183;···························6 3、抗傾覆穩(wěn)定性驗算····················&#

12、183;··············6 4、基底應力驗算·································

13、3;·····75、墻身截面應力驗算···································7四、設計擋土墻的排水措施·····

14、3;···························8五、設計擋土墻的伸縮縫和沉降縫····················

15、·······8六、參考文獻··········································

16、;···8七、附圖··············································

17、···8設計計算書一、設計擋土墻的根底埋深、斷面形狀和尺寸如下圖，擋土墻墻體高為H=8.5m，根底埋置深度d=1.5m,墻身縱向分段長度為L=10m；墻面與墻背平行，墻背仰斜，仰斜坡度1：0.25(02)，墻底傾斜度0.2:1=11.31°，墻頂寬2.1m，墻底寬2m。二、主動土壓力計算1、 計算破裂角經(jīng)試算，按破裂面交于荷載中部進行計算：<90°tan=-tan+ =-0.701+=0.722=35.8°2 、計算主動土壓力系數(shù)K和K1K=3、計算主動土壓力的合力作用點kN =三、擋土墻截面計算圖3-4-1 擋土墻計算圖1、計

18、算墻身重G及力臂ZG墻身體積計算：墻身自重計算：力臂ZG計算： ZG1=0.125H+0.476b1=0.125×8.5+0.476×2.1=2.06mZG2=0.651b1=0.651×2.1=1.37m2、抗滑穩(wěn)定性驗算滿足抗滑穩(wěn)定性要求。 3、抗傾覆穩(wěn)定性驗算 墻底傾斜，需把求得的、修正為、。 滿足抗傾覆穩(wěn)定性要求。 4、基底應力驗算 滿足要求。 5、墻身截面應力驗算取墻底截面，按每延米墻長計算。 1強度計算 滿足強度要求。 2穩(wěn)定計算 因為 墻為矮墻，取=1，即滿足穩(wěn)定要求。 3正截面直接受剪時驗算 滿足受剪要求。四、設計擋土墻的排水措施墻身排水：設置直徑為10cm的泄水孔，泄水孔向墻外傾斜5%，間距2.5m，上下交錯設置。最下排泄水孔底部高墻外出地