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manXslope - SLOPE STABILITY ANALYSIS BISHOPS SIMPLIFIED AND...

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SLOPE STABILITY ANALYSIS BISHOP’S SIMPLIFIED AND MORGENSTERN & PRICE METHODS by Nigel P. Balaam USERS' MANUAL FOR PROGRAM XSLOPE for Windows Centre for Geotechnical Research University of Sydney
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SYNOPSIS SYNOPSIS This manual contains a detailed description of a computer program which enables the user to analyse the stability of an earth slope using Bishop’s simplified method for circular failure surfaces or Morgenstern and Price’s analysis for non- circular surfaces. The program, XSLOPE for Windows, is written in Microsoft Visual Basic v5.0 with the supporting dynamic link library, VBXSLOPE.DLL, written in Lahey Fortran 90 v4.5. The program runs on Windows 95/98/NT. The program has been developed in the Centre for Geotechnical Research (CGR) within the School of Civil and Mining Engineering, University of Sydney. Nigel P. Balaam January 2001 -i-
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DISCLAIMER DISCLAIMER Information in this document is subject to change without notice and does not represent a commitment on the behalf of the University of Sydney. The software described in this document is furnished under a licence agreement and it may be used or copied only in accordance with the terms of that agreement. No part of this manual may be reproduced or transmitted in any form or by any means without the written permission of the Centre for Geotechnical Research at the University of Sydney. Although considerable care has been taken to ensure the accuracy of this software and its manual, the author and the University of Sydney accept no responsibility for the accuracy of the results obtained from their use. © N.P.Balaam, 2001. -ii-
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CONTENTS CONTENTS Section Page SYNOPSIS i DISCLAIMER ii INTRODUCTION 1 1.1 What is XSLOPE? 1 1.2 About this Manual 3 2. GETTING STARTED 4 2.1 System Requirements 4 2.2 Installing XSLOPE 4 2.3 Program Support 5 3. PROGRAM XSLOPE 6 3.1 Description of Program 6 3.2 A Typical Program Session 8 3.3 Initiating Program XSLOPE 10 4. PROGRAM OPTIONS 12 Data 12 Analysis 18 Non-Circular 21 Geometry 28 Chk_Mat 28 Loads 29 Label 30 Window 30 Circles 31 Grid 32 Size 33 Dump 33 Options 34 Help 36 -iv-
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CONTENTS CONTENTS (continued) 5. DETAILED NOTES 37 5.1 Slope Geometry 37 5.2 Material Properties 37 5.3 Non-Uniform Strength 38 5.4 Pore Pressures 41 5.5 External Tractions 44 5.6 Seismic Loadings 46 5.7 Automatic Generation of Circles 47 5.8 Generation of Circles from a User-Defined Grid 53 5.9 Output Specifications 54 6. PROGRAM FESEEP 55 6.1 Description of Program 55 6.2 Generating a Pore Pressure Grid 55 7. EXAMPLES 59 7.1 Analysis of a Submerged Slope 59 7.2 Analysis of an Embankment with Steady Seepage 65 APPENDIX A - SPECIFICATION OF THE INPUT DATA 69 APPENDIX B - METHODS OF ANALYSIS 81 Bishop’s Simplified Method 81 Morgenstern and Price’s Method 86 REFERENCES 90 -v-
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-1- INTRODUCTION Figure 1 Circular Mass Divided into Vertical Slices 1. INTRODUCTION 1.1 WHAT IS XSLOPE?
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