[Book] [PERFORM-3D Theory and Tutorials – Foreword] [English Version]
With the rapid development of economy and technology in our country, high-rise building, super high-rise building and complicated high rising structural system of all kinds appear in our country in recent years. It is not secure to use traditional seismic design method for these tall buildings beyond the code-specification. In present, performance-based seismic design is widely used in engineering. One of the most important difference between traditional seismic design method and performance-based seismic design method is that the force and deformation of structure under rare earthquake is gathered though nonlinear analysis and next seismic performance of structure is evaluated. Therefore, engineers must master a set of available and high efficiency structure nonlinear analysis software and understand the nonlinear analysis result of the software as well. Only in this way can engineers be able to complete the nonlinear analysis and seismic performance evaluation of structure.
PERFORM-3D (Nonlinear Analysis and Performance Assessment for 3D Structures), which is a powerful software that can provide nonlinear analysis for 3D-structure and seismic performance evaluation, is developed by Prof.Granham H.Powell Berkeley, California, USA. PERFORM-3D is released and maintained by a American well-known structure analysis software company CSI(Computers and Structures, Inc). As a nonlinear structure analysis software, PERFORM-3D has abundant element models and a powerful nonlinear solver. In addition, PERFORM-3D has a set of prefect seismic performance evaluation system. Nowadays, PERFORM-3D has been widely used in structure seismic research field and practical engineering application in our country, which is become a high reorganization and acceptability nonlinear analysis and seismic performance evaluation software in engineering research community.
Because PERFORM-3D is an English software, the manual that comes with the software involves lots of mechanical knowledge and structural concepts, which makes the beginners difficult to master the software. In present, books about PERFORM-3D are rare and each has its focus. In this case, author decides to share experience on learning elasto-plastic analysis and PERFORM-3D in this book, hoping to help readers in need.
To master a structure analysis software, we must have a better understanding of design ideas and theoretical knowledge involved. However, theoretical knowledge is boring. The best way to develop an interest on software is combining theory with practice. Therefore, the most common used material model, element types and analysis method in PERFORM-3D will be introduced in each chapter. Every chapter is concern with one topic, such as one type of material, element or analysis method. In the beginning of every chapter, it will give an introduction to theory and concept involved in the example. Through examples, basic principle, fundamental operation and definition of parameter are combined together, which makes readers learning more quickly.
[ Target Readers ]
This book is intended primarily for basic and intermediate users and also is a reference for advanced user. Application object includes: undergraduate and graduate student engaged in structural engineering and disaster prevention and reduction engineering; engineers and designers engaged in seismic design of bridge engineering; researcher who is interested in structural elasto-plastic analysis and seismic design based on performance.
[ Book Features ]
The main features of the book are as follow:
(1) Complete in contents. The common used model, function, material, element and analysis method is briefly introduced in order to let readers master PERFORM-3D completely and build models to analyse elasto-plastic analysis and evaluate seismic performance easily.
(2) Detail in explanation. According to different material, element and analysis method, every example is designed in detail for studying the software. Each example in this book gives the Step by Step operation and skills as well.
(3) Based on basic principles. Each element model or analysis involved in the book is given a detailed example after introducing the basic principle. In the example, it focuses on the selection of the parameter which makes readers acquire a better understanding to the theory.
(4) Abundant examples. This book is not limited to the theory explanation. There are nearly 20 examples in the book and the examples are taken from real experiments (low cyclic test, shake table test) and classic verify examples of other authority software (SAP2000, SeismoStruct). To ensure the validity of theory explanation, the reasonability of parameter selection and the accuracy of analysis, every analysis result of detailed example is compared with the analysis result of experiment accordingly or other authority software. Therefore, readers can learn software more quickly through these examples.
(5) Independence of chapters. Every chapter is concern with a main topic and the content of each chapter is independent. In addition, every example is designed for the chapter and the content of each example is independent. Therefore, readers can learn the required content and reduce the studying pressure.
[ Main Sections ]
The book is divided into 5 sections, totally 22 chapters.
Section I is “Fundamentals”, including chapter 1~2. Chapter 1 gives a summary of the characteristic of PERFORM-3D and introduces the design thought, interface composition, modelling and analysis function of the software. Chapter 2 introduces the fundamental procession of modelling and analysis in PERFORM-3D though introductory examples, which aims to let readers grasp the idea of modelling and analysis of PERFORM-3D.
Section II is “Theory and Examples”, which is the main part in the book, including chapter 3~13. Every chapter is concern with one topic, which is totally 11 topics. In the way of combing theory and examples, the content of material constitution, element model, analysis method, and result post-process in PERFORM-3D will be given a detailed introduction. The content relates to material model such as concrete, steel and masonry; relates to element types such as nonlinear fiber element of beam and column, concentration plastic hinge element of beam and column, shear wall element, infilled wall strut model, buckling restrained brace element, spring element, viscous damper element, isolator friction pendulum element, rubber isolator pendulum element, gap-hook element, deformation gage element. Though this part of study, readers can get a better understanding of fundamental principle of common used material and element and be able to model and analyse different type of element and structure.
Section III is “Comprehension Analysis Subject”, which introduces several comprehensive subjects, including chapter 14~17. Chapter 14 introduces reciprocation displacement loading in PERFORM-3D. Chapter 15 introduces seismic analysis under multi-support excitation in PERFORM-3D. Chapter 16 introduces basic theory and analysis of Pushover in PERFORM-3D. Chapter 17 introduces elasto-plastic analysis of the whole structure and structure performance evaluation in PERFORM-3D. Though the study of section III, readers can improve the ability in comprehension application.
Section IV is “Simulation of Dynamic Load Test of Structure”, including chapter 18~20, which is an actual modelling simulation of 3 dynamic load experiments: two shake table tests and a pseudo-dynamic test of full-scale frame. Thought numerical simulation of actual dynamic loading test, readers can feel the precision of numerical simulation in PERFORM-3D. In addition, the key issues which should be noticed in numerical simulation in PERFORM-3D. When PERFORM-3D is applied in actual engineering, readers should be aware that some problems can be simplified and some cannot be simplified.
Section V is “Common Errors and Warnings”, which summarizes some common errors and warnings in the application of PERFORM-3D and gives the solution.
[ Communication and Feedback ]
For convenience of the readers, related content about the book is put on the author’s blog website (www.jdcui.com). Readers are welcome to ask questions, download learning materials, share ideas on the website. Corrections and updating of the book is also put on the website. If there are some question about which readers doubts, authors will answer it on the website. Though the website, author hopes that various learning resources can be summarized and shared to benefit more and more people.
[ Acknowledgements ]
Author wishes to thank Professor Han.Xiaolei and Professor Jijing for supporting the book, especially Professor Han for writing a preface to the book. It is an honour for us to write this book and we will keep working on it.
Author wishes to thank support from family and friends, which is the driving force and inspiration of the writing of this book. Author also wishes to thank partner Shen.Xuelong (architectural design & research institute of scut) for trust and recognition in author. Without your hard work, the book cannot be completed successfully. We hope to move forward together and achieve our ambition.
Author wishes to thank supporters of website www.jdcui.com. Authors hope readers to contact me. If new edition is published, there will be more examples and more functions facing to PERFORM-3D.
Professor Han.Xiaolei and Doctor Li.Chushu (Beijing Construction Information Solution Engineering Consulting) read the draft of the book in detail and write the preface of the book. Also they give suggestions and advice on the book. Author express sincere gratitude for their hard work.
Author acknowledges significant help from following experts and engineers (in no particular order): Chen.Xuewei, Guo.Yuanxiang, Huang.Huihui, Lin.Chaowei, Li.Chongyang, Liu.Hongzhang, Li.Jianle, Li.Wenbin, Lin.Zhe, Wang.Feichao, Wei.Jiebin, Zhou.Bin, Zeng.Ming, Zhang.Xiaoyong. Author sincerely thanks you for appreciating time for reading the draft of book and giving the reviews for the book.
After the final version of the book, Editors Liu.Ruixia and Li.Tianhong from China Architecture & Building Press patiently reviewed the book for final publication. Author would like to thank them for their hard work.
[ Comments and Suggestions are Most Welcome ]
We focused a lot on this book, hoping to share learning experience with readers as well as help readers to study PERFORM-3D and structural elasto-plastic analysis. Author will be pleasure if readers get something from the book. However, author has own limitations. Also, PERFORM-3D is so powerful and structural elasto-plastic analysis is so broad and deep that there may be some shortcomings, omissions and even mistakes in the book. Urge readers criticize and give correct advice. Welcome communication and discussion by e-mail (firstname.lastname@example.org).
November 2017 in South China University of Technology
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