LPile 2018 User Manual unlocked PDF

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User’s Manual for LPile 2018 (Using Data Format Version 10) A Program to Analyze Deep Foundations Under Lateral Loading

by

William M. Isenhower, Ph.D., P.E. Shin-Tower Wang, Ph.D., P.E. L. Gonzalo Vasquez, Ph.D., P.E.

December 13, 2017

Copyright © 2018 by Ensoft, Inc. All rights reserved. This book or any part thereof may not be reproduced in any form without the written permission of Ensoft, Inc.

Date of Last Revision: December 13, 2017

Program License Agreement

IMPORTANT NOTICE: Please read the terms of the following license agreement carefully. You signify full acceptance of this Agreement by using the software product. Single-user versions of this software product is licensed only to the user (company office or individual) whose name is registered with Ensoft, Inc., or to users at the registered company office location, on only one computer at a time. Additional installations of the software product may be made by the user, as long as the number of installations in use is equal to the total number of purchased and registered licenses. Users of network-licensed versions of this software product are entitled to install on all computers on the network at their registered office locations, but are not permitted to install the program on virtual servers unless the virtual server license has been purchased. This software can be used simultaneously by as many users as the total number of purchased and registered licenses. The user is not entitled to copy this software product unless for backup purposes. Past and current versions of the software may be downloaded from www.ensoftinc.com. The license for this software may not loan, rent, lease, or transfer this software package to any other person, company, joint venture partner, or office location. This software product and documentation are copyrighted materials and should be treated like any other copyrighted material (e.g. a book, motion picture recording, or musical recording). This software is protected by United States Copyright Law and International Copyright Treaty.

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Copyright © 1987, 1997, 2004, 2010, 2012, 2013, 2015, 2017, 2018 by Ensoft, Inc. All rights reserved. Except as permitted under United States Copyright Act of 1976, no part of this publication may be reproduced, translated, or distributed without the prior consent of Ensoft, Inc. Although this software product has been used with apparent success in many analyses, new information is developed continuously and new or updated versions of the software product may be written and released from time to time. All users are requested to inform Ensoft, Inc. immediately of any suspected errors found in the software product. No warrantee, expressed or implied, is offered as to the accuracy of results from software products from Ensoft, Inc. The software products should not be used for design unless caution is exercised in interpreting the results and independent calculations are available to verify the general correctness of the results. Users are assumed to be knowledgeable of the information in the program documentation (User’s Manual and Technical Manual) distributed with the program package. Users are assumed to recognize that variances in input values can have significant effect on the computed solutions and that input values must be chosen carefully. Users should have a thorough understanding of the relevant engineering principles, relevant theoretical criteria (appropriate references are contained in the software documentation), and design standards.

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Table of Contents

List of Figures ................................................................................................................................ xi List of Tables ............................................................................................................................... xvi Chapter 1 Introduction .................................................................................................................... 1 1-1 General Description .............................................................................................................. 1 1-2 Program Development History ............................................................................................. 1 1-2-1 LPile 1.0 for MS-DOS (1986) ....................................................................................... 1 1-2-2 LPile 2.0 for MS-DOS (1987) ....................................................................................... 1 1-2-3 LPile 3.0 for MS-DOS (1989) ....................................................................................... 2 1-2-4 LPile 4.0 for MS-DOS (1993) ....................................................................................... 2 1-2-5 LPile Plus 1.0 for MS-DOS (1993) ............................................................................... 2 1-2-6 LPile Plus 1.0 for Windows (1994) ............................................................................... 2 1-2-7 LPile Plus 2.0 for Windows (1995) ............................................................................... 2 1-2-8 LPile Plus 3.0 for Windows (1997) ............................................................................... 3 1-2-9 LPile Plus 3.0M (Soil Movement Version) for Windows (1998).................................. 4 1-2-10 LPile Plus 4.0/4.0M for Windows (2000).................................................................... 4 1-2-11 LPile Plus 5.0 for Windows (2004) ............................................................................. 4 1-2-12 LPile 6 for Windows (2010) ........................................................................................ 5 1-2-13 LPile 2012 for Windows, Data Format 6 ..................................................................... 5 1-2-14 LPile 2013 for Windows, Data Format 7 ..................................................................... 6 1-2-15 LPile 2015 for Windows, Data Format 8 ..................................................................... 6 1-2-16 LPile 2016 for Windows, Data Format 9 ..................................................................... 7 1-2-17 LPile 2018 for Windows, Data Format 10 ................................................................... 7 1-3 Technical Support ................................................................................................................. 7 1-3-1 Upgrade Notifications and Ensoft’s Website................................................................. 8 1-3-2 Renewal of Program Maintenance................................................................................. 8 1-3-3 Changes of Support Policy ............................................................................................ 8 Chapter 2 Installation and Getting Started ...................................................................................... 9 2-1 Installation and Computing Hardware Requirements ........................................................... 9 2-1-1 Single User Version ....................................................................................................... 9 2-1-2 Network Version ............................................................................................................ 9 2-1-3 Software Updates ......................................................................................................... 10 2-1-4 Installation of Software Updates.................................................................................. 11 2-2 Getting Started .................................................................................................................... 11 2-2-1 File Menu and Buttons ................................................................................................. 12 2-2-2 Data Menu and Buttons ............................................................................................... 13 2-2-3 Computation Menu and Buttons .................................................................................. 13 v

2-2-4 Graphics Menu and Buttons ........................................................................................ 16 2-2-5 Tools Menu .................................................................................................................. 16 2-2-6 Window Menu ............................................................................................................. 17 2-2-7 Help Menu ................................................................................................................... 17 Chapter 3 Input of Data................................................................................................................. 21 3-1 Data Menu ........................................................................................................................... 22 3-2 Speed Buttons for Data Entry ............................................................................................. 22 3-3 Project Information Dialog ................................................................................................. 23 3-4 Program Options and Settings Dialog................................................................................. 23 3-4-1 Computational Options ................................................................................................ 24 3-4-2 Engineering Units of Input Data and Computations .................................................... 26 3-4-3 Analysis Control Options............................................................................................. 26 3-4-4 Loading Type and Number of Cycles of Loading ....................................................... 27 3-4-5 Output Options ............................................................................................................. 28 3-4-6 Text Viewer Options .................................................................................................... 28 3-4-7 Input of Data from Load Testing ................................................................................. 28 3-4-8 Internet Update Notice Query ...................................................................................... 29 3-5 Structural Dimensions and Material Properties .................................................................. 29 3-5-1 General Description of Input ....................................................................................... 29 3-5-2 Section Type and Shape............................................................................................... 29 3-5-3 Warning and Design Error Messages .......................................................................... 30 3-5-4 Elastic Sections ............................................................................................................ 31 3-5-5 Elastic Sections with Specified Moment Capacity ...................................................... 32 3-5-6 Rectangular Concrete Piles .......................................................................................... 32 3-5-7 Round Concrete Shafts (Bored Piles) .......................................................................... 36 3-5-8 Round Concrete Shaft with Permanent Casing............................................................ 38 3-5-9 Round Concrete Shaft with Permanent Casing and Core/Insert .................................. 40 3-5-10 Steel Pipe Pile ............................................................................................................ 42 3-5-11 Round Prestressed Concrete Pile ............................................................................... 44 3-5-12 Round Prestressed Concrete Pile with Void .............................................................. 46 3-5-13 Square Prestressed Concrete Pile............................................................................... 46 3-5-14 Square Prestressed Concrete Pile with Void.............................................................. 46 3-5-15 Octagonal Prestressed Concrete Pile ......................................................................... 47 3-5-16 Octagonal Prestressed Concrete Pile with Void ........................................................ 47 3-5-17 Steel H Section........................................................................................................... 47 3-5-18 AISC Section ............................................................................................................. 47 3-5-19 Pile with Defined Nonlinear Bending ........................................................................ 50 3-6 Lateral Load Transfer Relationships ................................................................................... 52 3-6-1 Soil Layering and p-y Curve Models ........................................................................... 53 3-6-2 User Input p-y Curves .................................................................................................. 57 3-7 Pile Batter and Ground Slope ............................................................................................. 58

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3-8 p-y Modification Factors ..................................................................................................... 59 3-9 Tip Shear-Resistance .......................................................................................................... 60 3-10 Shift Pile or Soil Elevations .............................................................................................. 61 3-11 Input of Output Depths for p-y Curves ............................................................................. 63 3-12 Conventional Loading Analysis ........................................................................................ 64 3-12-1 Pile-head Loading and Options.................................................................................. 64 3-12-2 Distributed Lateral Loading ....................................................................................... 66 3-12-3 Loading by Lateral Soil Movements ......................................................................... 70 3-12-4 Computation of Pile-head Stiffness Matrix Components .......................................... 71 3-12-5 Pushover Analysis...................................................................................................... 72 3-12-6 Pile Buckling Analysis............................................................................................... 74 3-13 Input of Load Testing Data ............................................................................................... 78 3-13-1 Controls for Input of Load Test Data......................................................................... 78 3-13-2 Input of Load Test Data without Data for Bending Moments ................................... 79 3-13-3 Input of Load Test Data for Bending Moments and Deflection versus Depth .......... 79 3-14 Load and Resistance Factor Design .................................................................................. 82 3-14-1 Unfactored Loads ....................................................................................................... 83 3-14-2 Load Cases and Resistance Factors ........................................................................... 84 3-14-3 Summary of Factored Load Cases ............................................................................. 85 3-15 Computation of Nonlinear EI Only................................................................................... 85 3-15-1 Axial Thrust Loads for Interaction Diagram ............................................................. 85 Chapter 4 Display of Graphics ...................................................................................................... 89 4-1 Introduction ......................................................................................................................... 89 4-2 Types of Graphics ............................................................................................................... 89 4-3 Graphics Mouse Commands ............................................................................................... 89 4-4 Graphics Buttons ................................................................................................................. 89 4-5 Graphics Menu .................................................................................................................... 89 4-6 Plot Menu ............................................................................................................................ 90 4-7 Graphics of Input Data ........................................................................................................ 91 4-7-1 View Pile-Soil Geometry ............................................................................................. 91 4-7-2 Summary Charts of Soil Properties ............................................................................. 92 4-7-3 User-Input p-y Curves .................................................................................................. 92 4-7-4 Distributed Lateral Loads vs. Depth ............................................................................ 92 4-7-5 p and y Modifiers versus Depth ................................................................................... 92 4-8 Graphics of Computational Results .................................................................................... 93 4-8-1 View Results ................................................................................................................ 93 4-8-2 p-y Curves at User-specified Depths ........................................................................... 93 vii

4-8-3 Lateral Deflection versus Depth .................................................................................. 93 4-8-4 Bending Moment versus Depth ................................................................................... 94 4-8-5 Shear Force versus Depth ............................................................................................ 94 4-8-6 Mobilized Soil Reaction versus Depth ........................................................................ 94 4-8-7 Deflection, Moment, and Shear Force versus Depth ................................................... 94 4-8-8 Deflection, Curvature, and Moment versus Depth ...................................................... 94 4-8-9 Mobilized Pile EI versus Depth ................................................................................... 94 4-8-10 Load versus Top Deflection ....................................................................................... 94 4-8-11 Load versus Max Moment ......................................................................................... 95 4-8-12 Top Deflection versus Pile Length ............................................................................ 95 4-8-13 Moment versus Curvature.......................................................................................... 95 4-8-14 EI versus Moment ...................................................................................................... 95 4-8-15 Interaction Diagram ................................................................................................... 95 4-8-16 All K’s versus Deflection and Rotation ..................................................................... 95 4-8-17 All K’s versus Shear and Moment ............................................................................. 95 4-8-18 Individual K’s versus Force and Moment .................................................................. 96 4-8-19 Individual K’s versus Pile-head Deflection and Rotation .......................................... 96 4-8-20 Pushover Shear Force versus Top Deflection ............................................................ 97 4-8-21 Pushover Moment versus Top Deflection ................................................................. 97 4-8-22 Pile Buckling Thrust versus Top Deflection.............................................................. 97 4-8-23 Deflec...