diff options
Diffstat (limited to 'Principles_Of_Foundation_Engineering_by_B_M_Das/3-Shallow_Foundations.ipynb')
| -rw-r--r-- | Principles_Of_Foundation_Engineering_by_B_M_Das/3-Shallow_Foundations.ipynb | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/Principles_Of_Foundation_Engineering_by_B_M_Das/3-Shallow_Foundations.ipynb b/Principles_Of_Foundation_Engineering_by_B_M_Das/3-Shallow_Foundations.ipynb new file mode 100644 index 0000000..0032d1a --- /dev/null +++ b/Principles_Of_Foundation_Engineering_by_B_M_Das/3-Shallow_Foundations.ipynb @@ -0,0 +1,330 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 3: Shallow Foundations" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 3.1: 1.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 3.1\n", +"clc; funcprot(0);\n", +"Nc=17.69;\n", +"Nq=7.44;\n", +"Ny=3.64;\n", +"q=3*115;\n", +"Gamma=115; //lb/ft^3\n", +"c=320;\n", +"B=5;//ft\n", +"FS=4;//factor of safety\n", +"qu=1.3*c*Nc+q*Nq+0.4*Gamma*B*Ny\n", +"qall=qu/FS; //q allowed\n", +"Q=qall*B^2;\n", +"disp(Q,'allowable gross load in lb');\n", +"" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 3.2: 2.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 3.2\n", +"clc; funcprot(0);\n", +"Gamma=105;//lb/ft^3\n", +"Gammasat=118;//lb/ft^3\n", +"FS=3;\n", +"pa=2014.125;//lb/ft^2\n", +"Depth=[5,10,15,20,25];\n", +"N60=[4,6,6,10,5];\n", +"sigmao=[0,0,0,0,0];\n", +"phi=[0,0,0,0,0]\n", +"Gammaw=62.4;\n", +"s=0;\n", +"printf('depth (ft)\tN60\t \tstress(lb/ft^2)\t phi(degrees)\n')\n", +"for i=1:5\n", +" sigmao(i)=2*Gamma+(Depth(i)-2)*(Gammasat-Gammaw);\n", +" phi(i)=sqrt(20*N60(i)*sqrt(pa/sigmao(i)))+20;\n", +" printf(' %.2f\t %.2f\t\t %.2f \t%.2f \n',Depth(i),N60(i),sigmao(i),phi(i));\n", +"avgphi=phi(i)/5+s;\n", +"s=avgphi;\n", +"end\n", +"disp(round(avgphi),'average friction angle in degrees');\n", +"//using graph get the values of other terms in terms of B and solve for B\n", +"deff('y=f(x)','y=-150000/x^2+5263.9+5527.1/x+228.3*x');\n", +"[x, v, info ]=fsolve(4,f);\n", +"disp(x,'the width in ft');\n", +"\n", +"\n", +"" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 3.3: 3.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 3.3\n", +"clc; funcprot(0);\n", +"phi=25; //degrees\n", +"Es=620; //kN/m^2\n", +"Gamma=18;//kN/m^2\n", +"Df=0.6;\n", +"B=0.6;\n", +"L=1.2;\n", +"Fqc=0.347;\n", +"Nq=10.66;\n", +"Nc=20.72;\n", +"Ngamma=10.88;\n", +"mu=0.3;\n", +"Fyd=1;\n", +"c=48;//kN/m^2\n", +"q=Gamma*(Df+B/2);\n", +"Ir=Es/(2*(1+mu)*(c+q*tan(phi*%pi/180)));\n", +"disp(Ir,'value of Ir');\n", +"Fcc=Fqc-(1-Fqc)/(Nq*tan(phi*%pi/180));\n", +"Fcs=1+Nq/Nc*B/L;\n", +"Fqs=1+B/L*tan(phi*%pi/180);\n", +"Fys=1-0.4*B/L;\n", +"Fcd=1+0.4*Df/B;\n", +"Fqd=1+2*tan(phi*%pi/180)*(1-sin(phi*%pi/180))^2*Df/B;\n", +"q1=0.6*18;\n", +"Fyc=Fqc;\n", +"qu=c*Nc*Fcs*Fcd*Fcc+q1*Nq*Fqs*Fqd*Fqc+1/2*Gamma*Ngamma*Fys*Fyd*Fyc;\n", +"disp(qu,'ultimate bearing capacity in kN/m^2');\n", +"" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 3.4: 4.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 3.4\n", +"clc; funcprot(0);\n", +"q=110*4; //lb/ft^2\n", +"Nq=33.3;\n", +"phi=35;\n", +"Df=4;\n", +"B=6;\n", +"Gamma=110;\n", +"Ngamma=48.03;\n", +"B1=6-2*0.5;\n", +"Fqi=1;\n", +"Fyi=1;\n", +"Fyd=1;\n", +"Fqs=1;\n", +"Fys=1;\n", +"Fqd=1+2*tan(phi*%pi/180)*(1-sin(phi*%pi/180))^2*Df/B;\n", +"qu=q*Nq*Fqs*Fqd*Fqi+1/2*B1*Gamma*Ngamma*Fys*Fyd*Fyi;\n", +"Qult=B1*1*qu;\n", +"disp(Qult,'ultimate bearing capacity in lb/ft');\n", +"disp(Qult/2000,'ultimate bearing capacity in ton/ft');\n", +"" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 3.5: 5.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 3.5\n", +"clc; funcprot(0);\n", +"e=0.5;\n", +"B=6;\n", +"k=e/B;\n", +"Gamma=110;\n", +"q=440;\n", +"disp('get the values of Nqe and Nye from the figure from the value of e/B');\n", +"Nye=26.8;\n", +"Nqe=33.4;\n", +"Qult=B*1*(q*Nqe+1/2*Gamma*B*Nye);\n", +"disp(Qult,'ultimate bearing capacity in lb/ft');\n", +"disp(Qult/2000,'ultimate bearing capacity in ton/ft');\n", +"" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 3.6: 6.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 3.6\n", +"clc; funcprot(0);\n", +"Df=0.7;\n", +"//from table\n", +"Nq=18.4;\n", +"Ny=22.4;\n", +"q=12.6;\n", +"phi=30; //angle\n", +"L=1.5;\n", +"Fyd=1;\n", +"Gamma=18;\n", +"L1=0.85*1.5;\n", +"L2=0.21*1.5;\n", +"B=1.5;\n", +"A=1/2*(L1+L2)*B;\n", +"B1=A/L1; //B'\n", +"Fqs=1+B1/L1*tan(phi*%pi/180);\n", +"Fys=1-0.4*B1/L1;\n", +"Fqd=1+2*tan(phi*%pi/180)*(1-sin(phi*%pi/180))^2*Df/B;\n", +"Qult=A*(q*Nq*Fqs*Fqd+1/2*Gamma*B1*Ny*Fys*Fyd);\n", +"disp(Qult,'ultimate load in kN');\n", +"" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 3.7: 7.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 3.7\n", +"clc; funcprot(0);\n", +"e=0.15;\n", +"B=1.5;\n", +"Fqs=1;\n", +"L=1.5;\n", +"Gamma=18;\n", +"q=0.7*18;\n", +"//from table\n", +"Nqe=18.4;\n", +"Nye=11.58;\n", +"Fys=1+(2*e/B-0.68)*(B/L)+(0.43-3/2*e/B)*(B/L)^2;\n", +"Qult=B*L*(q*Nqe*Fqs+1/2*Gamma*Nye*Fys);\n", +"disp(Qult,'ultimate load in kN');\n", +"" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 3.8: 8.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"//example 3.8\n", +"clc; funcprot(0);\n", +"q=16;\n", +"Nqei=14.2;\n", +"Gamma=16\n", +"B=1.5;\n", +"Nyet=20;\n", +"Qult=B*(Nqei*q+1/2*Gamma*B*Nyet);\n", +"disp(Qult,'ultimate load in kN/m');\n", +"\n", +"" + ] + } +], +"metadata": { + "kernelspec": { + "display_name": "Scilab", + "language": "scilab", + "name": "scilab" + }, + "language_info": { + "file_extension": ".sce", + "help_links": [ + { + "text": "MetaKernel Magics", + "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md" + } + ], + "mimetype": "text/x-octave", + "name": "scilab", + "version": "0.7.1" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |