重力式擋土墻課程設(shè)計(jì)重力式擋土墻設(shè)計(jì)

1、 重力式擋土墻課程設(shè)計(jì)作者姓名學(xué)號(hào)班級(jí)學(xué)科專業(yè)土 木 工 程指導(dǎo)教師所在院系建 筑 工 程 系提交日期設(shè)計(jì)任務(wù)書一、 設(shè)計(jì)題目本次課程設(shè)計(jì)題目：重力式擋土墻設(shè)計(jì)二、 設(shè)計(jì)資料 1、線路資料：建設(shè)地點(diǎn)為某一級(jí)公路DK23+415.00DK23+520.00段，在穿過(guò)一條深溝時(shí)，由于地形限制，無(wú)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(guò)的此處是丘陵地區(qū)，石材比較豐富，擋土墻在設(shè)計(jì)過(guò)程中應(yīng)就地選材，結(jié)合當(dāng)?shù)氐牡匦螚l件，節(jié)省工程費(fèi)用。2、墻后填土為碎石土，重度，內(nèi)摩擦角；墻后填土表面為水平，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??；墻底與巖土摩擦系數(shù)

2、。3、墻體材料采用MU80片石，M10水泥砂漿，砌體抗壓強(qiáng)1.14，砌體重度。4、擋土墻布置形式及各項(xiàng)計(jì)算參數(shù)如下圖所示：圖4-1擋土墻參數(shù)圖（單位：m）目錄設(shè)計(jì)任務(wù)書····································

3、·············2一、設(shè)計(jì)題目····································

4、;·········2 二、設(shè)計(jì)資料·······································

5、83;·····2設(shè)計(jì)計(jì)算書···········································

6、83;·····4一、設(shè)計(jì)擋土墻的基礎(chǔ)埋深、斷面形狀和尺寸·················4二、主動(dòng)土壓力計(jì)算······················&#

7、183;················41、 計(jì)算破裂角································

8、;········42 、計(jì)算主動(dòng)土壓力系數(shù)K和K1··························43、計(jì)算主動(dòng)土壓力的合力作用點(diǎn)··········&#

9、183;··············5 三、擋土墻截面計(jì)算·································

10、83;·····51、計(jì)算墻身重G及力臂ZG·······························62、抗滑穩(wěn)定性驗(yàn)算·········

11、83;···························6 3、抗傾覆穩(wěn)定性驗(yàn)算····················

12、83;··············6 4、基底應(yīng)力驗(yàn)算··································

13、;·····75、墻身截面應(yīng)力驗(yàn)算···································7四、設(shè)計(jì)擋土墻的排水措施······

14、;···························8五、設(shè)計(jì)擋土墻的伸縮縫和沉降縫····················&

15、#183;······8六、參考文獻(xiàn)··········································

16、···8七、附圖··············································&

17、#183;··8設(shè)計(jì)計(jì)算書一、設(shè)計(jì)擋土墻的基礎(chǔ)埋深、斷面形狀和尺寸如圖所示，擋土墻墻體高為H=8.5m，基礎(chǔ)埋置深度d=1.5m,墻身縱向分段長(zhǎng)度為L(zhǎng)=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(dòng)土壓力計(jì)算1、 計(jì)算破裂角經(jīng)試算，按破裂面交于荷載中部進(jìn)行計(jì)算：<90°tan=-tan+ =-0.701+=0.722=35.8°2 、計(jì)算主動(dòng)土壓力系數(shù)K和K1K=3、計(jì)算主動(dòng)土壓力的合力作用點(diǎn)kN =三、擋土墻截面計(jì)算圖3-4-1 擋土墻計(jì)算圖1

18、、計(jì)算墻身重G及力臂ZG墻身體積計(jì)算：墻身自重計(jì)算：力臂ZG計(jì)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(yàn)算滿足抗滑穩(wěn)定性要求。 3、抗傾覆穩(wěn)定性驗(yàn)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(yīng)力驗(yàn)算 滿足要求。 5、墻身截面應(yīng)力驗(yàn)算取墻底截面，按每延米墻長(zhǎng)計(jì)算。 1）強(qiáng)度計(jì)算 滿足強(qiáng)度要求。 2）穩(wěn)定計(jì)算 因?yàn)?墻為矮墻，取=1，即滿足穩(wěn)定要求。 3）正截面直接受剪時(shí)驗(yàn)算 滿足受剪要求。四、設(shè)計(jì)擋土墻的排水措施墻身排水：設(shè)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(cuò)設(shè)置。最下排泄水