A Program for the Analysis of Deep Foundations Under ...

1 A Program for the Analysis of deep Foundations Under Lateral Loading by Shin-Tower Wang L. Gonzalo Vasquez Jose A. Arrellaga William M. Isenhower (Release: Feb. 20 22) LPILE v2022 User s Manual ii User s Manual (Rel. Feb. 2022) LPILE v2022 COPYRIGHT Copyright 1987-2022 by ENSOFT, INC. All rights reserved. Printed in the Unites States of America. Except as permitted Under the United States Copyright Act of 1976, no part of this publication may be reproduced, translated, or distributed without the prior written approval of ENSOFT, INC. SOFTWARE LICENSE AGREEMENT & DISCLAIMER IMPORTANT NOTICE: Please carefully read the terms of the license agreement and disclaimer at the end of this book. You signify acceptance with those terms by usage of the software. iii User s Manual (Rel. Feb. 2022) LPILE v2022 Table of Contents List of Figures.

2 Ix List of Tables .. xiv CHAPTER 1. Introduction .. 1- 1 General Description .. 1- 2 Program Development History .. 1- 2 LPile for MS-DOS (1986) .. 1- 2 LPile for MS-DOS (1987) .. 1- 2 LPile for MS-DOS (1989) .. 1- 3 LPile for MS-DOS (1993) .. 1- 3 LPile Plus for MS-DOS (1993).. 1- 3 LPile Plus for Windows (1994) .. 1- 3 LPile Plus for Windows (1995) .. 1- 3 LPile Plus for Windows (1997) .. 1- 4 LPile Plus (Soil Movement Version) for Windows (1998) .. 1- 5 LPile Plus for Windows (2000) .. 1- 5 LPile Plus for Windows (2004) .. 1- 5 LPile 6 for Windows (2010) .. 1- 6 LPile v2012 Data Format 6 .. 1- 7 LPile v2013 Data Format 7 .. 1- 7 LPile v2015 Data Format 8 .. 1- 7 LPile v2016 Data Format 9 .. 1- 8 LPile v2018 Data Format 10 .. 1- 8 LPile v2019 Data Format 11 .. 1- 8 LPile v2022 Data Format 12.

3 1- 9 Contents of the LPILE Package .. 1- 10 Default Installation Directories .. 1- 10 Directory for Main Program 1- 10 Directory for Example 1- 10 Hardware 1- 11 Technical Support .. 1- 11 Preferred Methods of Software Support .. 1- 11 Upgrade Verification and Internet Site .. 1- 12 Renewal of Program Maintenance .. 1- 12 Changes of Support 1- 12 CHAPTER 2. Installation and Getting Started .. 2- 1 Installation Procedures .. 2- 2 Installation of Single-User Version .. 2- 2 Introduction of Network Version .. 2- 7 iv User s Manual (Rel. Feb. 2022) LPILE v2022 Backup of Original Software .. 2- 8 Software Updates on the Internet .. 2- 8 Getting Started .. 2- 8 File Menu and Buttons .. 2- 10 Data Menu and Buttons .. 2- 11 Computation Menu and Buttons .. 2- 12 Graphics Menu and 2- 14 Tools Menu .. 2- 14 Window Menu.

4 2- 15 Help Menu .. 2- 15 CHAPTER 3. Input of Data .. 3- 1 General Notes for Data Input .. 3- 2 Speed Buttons for Data Entry .. 3- 3 Data Menu .. 3- 3 Project Information Dialog .. 3- 4 Options and Settings Dialog .. 3- 5 Computational Options .. 3- 6 Output Options .. 3- 8 Engineering Units of Input Data and Computations .. 3- 9 Loading Type and Number of Cycles of Loading .. 3- 9 Analysis Control Options .. 3- 9 Data from load Test .. 3- 11 Internet Update Notice Query .. 3- 11 Text Viewer Options .. 3- 11 Pile Properties .. 3- 11 General Description of Input .. 3- 11 Section Type and Shape .. 3- 11 Warning and Error Messages .. 3- 12 Elastic Sections .. 3- 13 Elastic Sections with Specified Moment Capacity .. 3- 14 Rectangular Concrete Piles .. 3- 15 Round Concrete Shafts (Bored Piles) .. 3- 20 Round Concrete Shaft with Permanent Casing.

5 3- 23 Round Concrete Shaft with Permanent Casing and Core/Insert .. 3- 26 Steel Pipe Section .. 3- 28 Round Prestressed Concrete .. 3- 30 Round Prestressed Concrete with Void .. 3- 32 Square Prestressed Concrete .. 3- 32 Square Prestressed Concrete with Void .. 3- 33 Octagonal Prestressed Concrete .. 3- 33 Octagonal Prestressed Concrete Pile with Void .. 3- 34 Steel H Section .. 3- 34 v User s Manual (Rel. Feb. 2022) LPILE v2022 Steel AISC Section .. 3- 34 User Defined Nonlinear Bending 3- 37 Options for Nonlinear Sections .. 3- 39 Soil Layers .. 3- 40 Soil Layering and p-y Curve Models .. 3- 41 User Input p-y Curves .. 3- 45 Pile Batter and Ground Slope .. 3- 46 p- y Modification Factors .. 3- 47 Shear-Resistance Curve at Pile 3- 48 Moment-Resistance Curve at Pile Tip .. 3- 49 Side Resistance Along Pile .. 3- 50 Shift Pile Elevation in Soil Profile.

6 3- 52 Output Depths for p-y Curves .. 3- 54 Import Soil Layers from EnCPT Soil File .. 3- 55 Conventional Loading Analysis .. 3- 56 Pile Head 3- 56 Distributed Lateral Loading .. 3- 59 Loading by Lateral Soil 3- 63 Concentrated Loads Along Pile .. 3- 64 Evaluations of Variable Pile Lengths .. 3- 65 Computation of Pile-head Stiffness Matrix Components .. 3- 67 Pushover Analysis .. 3- 68 Pile Buckling Analysis .. 3- 70 Input of load Testing Data .. 3- 75 Controls for Input of load Test Data .. 3- 75 Input of load Test Data without Data for Bending Moments .. 3- 76 Input of load Test Data for Bending Moments and Deflection versus Depth .. 3- 76 load and Resistance Factor Design .. 3- 79 Unfactored Loads .. 3- 80 load Cases and Resistance Factors .. 3- 81 Summary of Factored load Cases .. 3- 82 Computation of Nonlinear EI 3- 82 Axial Thrust Loads for Interaction Diagram.

7 3- 82 CHAPTER 4. Display of Graphics .. 4- 1 Introduction .. 4- 2 Types of Graphics .. 4- 2 Graphics Mouse Commands .. 4- 2 vi User s Manual (Rel. Feb. 2022) LPILE v2022 Graphics Buttons .. 4- 2 Graphics Menu .. 4- 2 Plot Menu .. 4- 4 Graphics of Input Data .. 4- 5 Pile-Soil 4- 5 3D View .. 4- 5 Summary Charts of Soil Properties .. 4- 6 Distributed Lateral Loads vs. Depth .. 4- 6 p and y Modifiers versus Depth .. 4- 6 p- y Curves .. 4- 6 User-Input p-y Curves .. 4- 7 Graphics of Computational Results .. 4- 7 View Results .. 4- 7 Lateral Deflection versus Depth .. 4- 7 Bending Moment versus Depth .. 4- 8 Shear Force versus Depth .. 4- 8 Mobilized Soil Reaction versus Depth .. 4- 8 Deflection, Moment, and Shear Force versus Depth .. 4- 8 Deflection, Curvature, and Moment versus Depth .. 4- 8 Mobilized Pile EI versus Depth.

8 4- 9 Slope versus Depth .. 4- 9 load versus Top Deflection .. 4- 9 load versus Max Moment .. 4- 9 Top Deflection versus Pile Length .. 4- 9 EI versus Moment .. 4- 9 Moment versus Curvature .. 4- 9 Interaction Diagram .. 4- 9 All K s versus Deflection and Rotation .. 4- 10 All K s versus Shear and Moment .. 4- 10 Individual K s versus Force and Moment .. 4- 10 Individual K s versus Pile-head Deflection and Rotation .. 4- 11 Pushover Shear Force versus Top Deflection .. 4- 11 Pushover Moment versus Top 4- 12 Pile Buckling Thrust versus Top Deflection .. 4- 12 Soil Movement and Deflection versus Depth .. 4- 12 Presentation Charts .. 4- 12 Saving and Applying Presentation Chart Templates .. 4- 13 Exporting Presentation Charts .. 4- 13 3D-View Results .. 4- 13 Deformed 4- 13 Contour Plot .. 4- 14 Pile Diagrams.

9 4- 15 vii User s Manual (Rel. Feb. 2022) LPILE v2022 Pile Lateral Results .. 4- 15 Export Graphs to Excel .. 4- 16 CHAPTER 5. Tools Menu .. 5- 1 Simple 5- 2 Battered Pile load Calculator .. 5- 3 Custom Reinforcing Bar Data Entry and Editing .. 5- 4 Multi-File Analysis (Batch Run Utility) .. 5- 5 CHAPTER 6. Example Problems .. 6- 1 Example 1 Steel Pile in Sloping Ground .. 6- 5 Example 2 Drilled Shaft in Sloping Ground .. 6- 12 Example 3 Offshore Pipe Pile .. 6- 18 Example 4 Buckling of a Pile-Column .. 6- 23 Example 5 Computation of Nominal Moment Capacity and Interaction Diagram 6- 26 Example 6 Pile-head Stiffness Matrix .. 6- 29 Example 7 Pile with User-Input p-y Curves and Distributed load .. 6- 31 Example 8 Pile in Cemented Sand .. 6- 33 Example 9 Drilled Shaft with Tip Resistance .. 6- 35 Example 10 Drilled Shaft in Soft Clay.

10 6- 39 Example 11 LRFD Analysis .. 6- 40 Example 12 Pile in Liquefied Sand with Lateral Spread .. 6- 43 Example 13 Square Elastic Pile with Top Deflection versus Length .. 6- 46 Example 14 Pushover Analysis of Prestressed Concrete Pile .. 6- 48 Example 15 Pile with Defined Nonlinear Bending Properties .. 6- 51 Example 16 Pile with Distributed Lateral Loadings .. 6- 52 Example 17 Analysis of a Drilled Shaft .. 6- 53 Example 18 Analysis of Drilled Shaft with Permanent Casing .. 6- 55 Example 19 Analysis of Drilled Shaft with Casing and Core .. 6- 56 Example 20 Analysis of Embedded Pole .. 6- 58 Example 21 Analysis of Tapered Elastic Pile .. 6- 60 Example 22 Analysis of Tapered Elastic-Plastic Pile .. 6- 62 Example 23 Output of p- y Curves .. 6- 63 Example 24 Analysis with Lateral Soil Movements .. 6- 67 Example 25- Verification of Elastic Pile in Elastic Subgrade Soil.