MATLAB code: PMM,PM,MM interaction curves for short columns of practically any shape
Size: 13 KB
The Matlab code for rectangular column interaction curve I posted last week is actually incorrect. The new one I post now can create the P-M-M, M-M, P-M interaction curves for short columns of practically any arbitrary shapes including openings. It has been extensively checked with spColumn v4.81 lastest version that shows excellent agreement.
4 main srcipt m files are included:
- RcolPMMall_1.m ---> rectangular column
- LcolPMMall_1.m ---> L-shaped column
- CcolPMMall_1.m ---> C-shaped column
- CcolPMMall_1w1O ---> C-shaped column with opening.
For typical regular shapes (rectangle, T, L, C, I, Z, Cross, regular polygons), the global coordinates (Xo,Yo,Xbo,Xbo) of the section & reinf bars can be readily built into the program. For an arbitray shape, they need to be specified.
Other files are supporting functions:
- polygeom.m: calculates area & centriodal coordinates of a polygon (this one I gleaned from the web; the rest are my own's)
- fcutpolygon1.m: cuts a polygon into 2 parts, retains & renumbers one of them for use (this is an essential part used to isolate the concrete compression block) + other minor .m files.
The program produces 4 graphs:
- geometry & reinf patern
- 3D P-M-M surface plot
- 2D Mx-My plot for a specified level of axial force P (that you can change)
- 2D P-M plot for a specified angle (GAMMA)of direction of biaxial bending moment
15 levels of P are used (changeable) ---> for some irregular shapes, the surface plot might look jagged in some places where the contours twist a lot.
Download link for Matlab m files below
Note: for correct results, corner points (Xo,Yo) of arbitary shapes are entered CLOCKWISE for main geometry & COUNTERCLOCKWISE for openings.
global coordinates
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Experimental Studies on Earthquake Response Behavior of Cylindrical Tanks
J. Pressure Vessel Technol. -- February 1987 -- Volume 109, Issue 1, 50 (8 pages)
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Posted by: Sumatra - 09-23-2012, 12:36 PM - Forum: Archive
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Theory and Analysis of Elastic Plates and Shells Author: J.N. Reedy | Size: Unknown MB | Format:PDF | Quality:Unspecified | Publisher: CRC Press | Year: 2006 | pages: 568 | ISBN: 978-0849384158
Because plates and shells are common structural elements in aerospace, automotive, and civil engineering structures, engineers must understand the behavior of such structures through the study of theory and analysis. Compiling this information into a single volume, Theory and Analysis of Elastic Plates and Shells, Second Edition presents a complete, up-to-date, and unified treatment of classical and shear deformation plates and shells, from the basic derivation of theories to analytical and numerical solutions.
Revised and updated, this second edition incorporates new information in most chapters, along with some rearrangement of topics to improve the clarity of the overall presentation. The book presents new material on the theory and analysis of shells, featuring an additional chapter devoted to the topic. The author also includes new sections that address Castigliano's theorems, axisymmetric buckling of circular plates, the relationships between the solutions of classical and shear deformation theories, and the nonlinear finite element analysis of plates. The book provides many illustrations of theories, formulations, and solution methods, resulting in an easy-to-understand presentation of the topics.
Like the previous edition, this book remains a suitable textbook for a course on plates and shells in aerospace, civil, and mechanical engineering curricula and continues to serve as a reference for industrial and academic structural engineers and scientists.
Interesting Ph.D. Thesis by Stefania Palaoro - ARCH BRIDGES, Design-Construction-Perception
INTRODUCTION ...................................................................................................... 03
CHAPTER 1: DESIGN - What beauty means? ....................................................... 11
1.1 Introduction
Relation between bridge shape and construction method through history
1.2 Chinese ancient arch bridges
1.3 Roman period (700 B.D.
Sorry, I don't know what went wrong with my first post.
Interesting Ph.D. thesis by Stefania Palaoro - ARCH BRIDGES, Design-Construction-Perception
CHAPTER 1: DESIGN - What beauty means? ....................................................... 11
1.1 Introduction
Relation between bridge shape and construction method through history
1.2 Chinese ancient arch bridges
1.3 Roman period (700 B.D.
Something wrong is happening during posting of this thread.
Here it goes again (3rd time)
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CHAPTER 1: DESIGN - What beauty means? ....................................................... 11
CHAPTER 2: PERCEPTION Landscape perception ........................................... 53
CHAPTER 3: STATE OF ART - Arch bridges in the world and in Italy ................... 93
CHAPTER 4: CONSTRUCTION - Construction methods ..................................... 153
CONCLUSION ........................................................................................................ 227
REFERENCES ....................................................................................................... 241
Author: Alex Wilson and Mark Piepkorn | Size: 194 MB | Format:PDF | Quality:Unspecified | Publisher: NEW SOCIETY PUBLISHER | Year: 2008 | pages: 390 | ISBN: ISBN-13: 9780865716001
Interest in sustainable, green building practices is greater than ever. Whether concerned about allergies, energy costs, old-growth forests, or durability and long-term value, homeowners and builders are looking for ways to ensure that their homes are healthy, safe, beautiful, and efficient.
In these pages are descriptions and manufacturer contact information for more than 1,400 environmentally preferable products and materials. All phases of residential construction, from sitework to flooring to renewable energy, are covered. Products are grouped by function, and each chapter begins with a discussion of key environmental considerations and what to look for in a green product. Over 40 percent revised, this updated edition includes over 120 new products. Categories of products include:
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Outdoor structures
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Sheathing
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Flooring and floor coverings
Interior finish and trim
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Paints and coatings
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Appliances
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Renewable energy
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An index of products and manufacturers makes for easy navigation. There is no more comprehensive resource for both the engaged homeowner and those who design and build homes.
Editor Alex Wilson is president of BuildingGreen, an authoritative source for information on environmentally responsible design and construction, which also publishes Environmental Building News.
Co-editor Mark Piepkorn has extensive experience with natural and traditional building methods.
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in Adobe Acrobat 3D you can make a better quality PDF from low quality one.
follow :
Document Menu > Optimized scanned PDF
in the following picture i suggest some settings :
however before do anything , make a backup copy from your Original PDF and save that in some other places !
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If anyone have or know better tool , please share to us.
Author: Sarah Springman, Jan Laue, Linda Seward | Size: Unknown MB | Format:PDF | Quality:Unspecified | Publisher: CRC Press | Year: 2010 | pages: 1552 | ISBN: 0415592887
This book results from the 7th ICPMG meeting in Zurich 2010 and covers a broad range of aspects of physical modelling in geotechnics, linking across to other modelling techniques to consider the entire spectrum required in providing innovative geotechnical engineering solutions.
Since 1949 the "Committee for Waterfront Structures" has operated on honorary base as a committee of the Society for Harbour Engineering (HTG), Hamburg, and since 1951 also as working group of the German Society for Geotechnics (DGGT), Essen. Its full designation reads "Committee for Simplification an Standardization of Calculation and Construction of Waterfront Structures", which also outlines its goals. Following on from the previous joint publications, the English edition of EAU 2004 contains the safety concept with partial safety factors in accordance with the Eurocodes or the European prestandards as well as with the new edition of the corresponding German standard, partially differing on account of practice experiences. The recommendations continue to satisfy the requirements for international acknowledgement and application with regard to planning, design tendering, the awarding of contracts, building and building supervision. Further, the inspection and accounting procedures for harbour and waterway constructions are given from uniform points of view.
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