1、重力式漿砌塊石擋土墻計算,一、設計參數,擋墻基本資料,擋墻總高(m),H,3.80,墻背填土容重(KN/m3),r,18,墻身高度(m),H1,3.40,墻背填土內摩擦角(o),26,擋墻頂寬(m),b,0.6,地基土內摩擦角(o),o,32.9,立壁面坡 (m)1:m1,m1,0,地基土摩擦系數,f,0.45,立壁背坡(m)1:m2,m2,0.48,地基土容許承載力(kp),160,基礎埋深(m),h,0.70,墻背摩擦角(o),26,底板厚度(m),h1,0.40,墻背偏斜角(o),a,-22,底板總寬(m),B,2.60,地面偏斜角(o),0.00,趾板寬(m),B1,0.30,土壓力系

2、數,a,0.390 ,踵板寬(m),B3,0.30,h2,0.00,B2,2.00,h3,0.00,凸榫厚度(m),hf,0.00,基底傾角,a0,0,條件一：,二、計算,荷載計算,1.汽車荷載換算 q1,2,(參數q:汽-20為1，汽超-20為2),h0,200/r13.0+0.577(H+2a) ,0.73,m,2.人行荷載 q2,1.5, KN/m2,2.其他荷載 q3,5, KN/m2,內力計算,1.土壓力,Ea,0.5rH(H+2h0)a,70.19,KN,Ex,Ea*cos(-a),46.97,KN,Ey,Ea*sin(-a),52.16,KN,Zx,H*(3h0+H)/(3*(2

3、h0+H),1.44,m,Zy,B+Zx*tan(a),2.02,m,2.墻體自重 ,W1,23*b*H1,46.92,KN,X1,0.5b+B1,0.60,m,W2,23*(B2-b)2/(2*tan(-a),55.79,KN,X2,(B2-b)/3+b+B1,1.37,m,W3,23*h1*B,23.92,KN,X3,0.5B,1.30,m,W4,23*0.5*h2*h3,0.00,KN,X4,B1-h2/3,0.30,m,總重W,W1+W2+W3+W4,126.63,KN,X,WiXi / W,1.07,m,Ex,0.5rh2a*cos(-45o),1.63,KN,反向,三、墻體穩(wěn)定性和

4、基底應力驗算,1.驗算抗滑穩(wěn)定系數,Kc,(W+Ey)*f/(Ex-Ex),1.774,1.3,滿足要求2.驗算抗傾覆穩(wěn)定系數,Ko,(W*X+Ey*Zy)/(ExZx),3.552,1.5,滿足要求3.驗算偏心距,e,0.5B-(W*X+Ey*Zy-ExZx)/(W+Ey),0.333,=,0.433,滿足要求B/6,0.433,4.驗算基底應力,1,(W+Ey)*(1+6e/B)/B,121.558,=,160,滿足要求2,(W+Ey)*(1-6e/B)/B,15.975,1.3,滿足要求,五：附注,1.注意a和a0的正負。,2.不考慮水的作用，即在計算時視河道無水，結果偏安全。,3.j漿

5、砌塊石的容重一般采用23.0 KN/m3,以上數據均以每延米計算.,條件二：,一、設計參數,擋墻基本資料,見條件一,K(m),1.00,二、計算,荷載計算,見條件一,內力計算,1.土壓力,1,26.00,(o),arctantan(a)+K/(H+h0) ,-10.39,(o),tan(x),(1tan()tan()tan()K/(H+h0)/1-(K/(H+h0)+tan()tan(),-0.40,x,arctantan(x),-22.00,(o),2,+x,74.00,(o),tan(),tan(2)+ctan(1)tan(2)+tan(x+)tan(2)=,0.64,arctantan(

6、)-,32.81,(o),a,1-tan(a)tan()*tan()-tan(a)*cos(+)/1-tan()tan()*sin(+-a),0.57,h1,K/ctan()-tan(a),#DIV/0!,m,h2,K/tan()-tan(a),0.95,m,h3,H+h0-h2=,3.58,m,A,K*h1/(H+h0-h1)2=,#DIV/0!,m,Ea,0.5r(H+h0-h1)2*a+A*cos(+)/sin(+-a)=,#DIV/0!,Kpa,Zx,(H+h0-h1)3+h1(h2-h1)(3h3+2h2-h1)/3h3(H+h0-2h1+h2)+h2(h2-h1),#DIV/0!,

7、m,Zy,B+Zx*tan(a),#DIV/0!,m,2,r*(h2-h1)*a=,#DIV/0!,Kpa,Ex,Ea*cos(-a),#DIV/0!,KN,Ey,Ea*sin(-a),#DIV/0!,KN,2.墻體自重 ,見條件一,三、墻體穩(wěn)定性和基底應力驗算,1.驗算抗滑穩(wěn)定系數,Kc,(0.9*W+1.3*Ey)*f+0.9*W*tga0/(Ex-Ex),#DIV/0!,#DIV/0!,1.3,#DIV/0!2.驗算抗傾覆穩(wěn)定系數,Ko,(W*X+Ey*Zy)/(ExZx),#DIV/0!,#DIV/0!,1.5,#NAME?3.驗算偏心距,e,0.5B-(W*X+Ey*Zy-ExZx)/(W+Ey),#DIV/0!,#DIV/0!,0.433,#DIV/0!B/