Istruzionicnr dt205
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Publicado: 15 de marzo de 2012
CNR – Advisory Committee on Technical Recommendations for Construction
NATIONAL RESEARCH COUNCIL OF ITALY
ADVISORY COMMITTEE ON TECHNICAL RECOMMENDATIONS FOR CONSTRUCTION
Guide for the Design and Construction of Structures made of FRP Pultruded Elements
CNR-DT 205/2007
ROME – CNR October 9th, 2008
CNR – Advisory Committee on Technical Recommendations for Construction
Thisdocument is subject to copyright.
No part of this publication may be stored in a retrieval system, or transmitted in any form or by any means - electronic, mechanical, recording, or otherwise – without the prior written permission of the Italian National Research Council. The reproduction of this document is permitted for personal, noncommercial use.
ROME – CNR October 9th, 2008 CNR – DT 205/2007
CONTENTS
1 FOREWORD................................................................................................................................. 1 1.1 PUBLIC HEARING................................................................................................................. 2 1.2 SYMBOLS............................................................................................................................... 3 2 CHARACTERISTICS OF FRP PULTRUDES ......................................................................... 6 2.1 QUALITY CONTROL ............................................................................................................ 6 2.2 ACCEPTANCE CRITERIA.................................................................................................... 6 3 BASIS OF DESIGN ...................................................................................................................... 7 3.1 BASIC REQUIREMENTS ...................................................................................................... 7 3.2 SERVICE LIFE OF THE STRUCTURE................................................................................ 7 3.3 DURABILITY REQUIREMENTS ......................................................................................... 7 3.4 GENERAL DESIGN PRINCIPLES ........................................................................................ 8 3.4.1 General.........................................................................................................................8 3.4.2 Calculations..................................................................................................................8 3.4.3 Properties of the materials, elements and products......................................................8 3.4.4 Design capacity............................................................................................................9 3.5 PARTIAL COEFFICIENTS .................................................................................................... 9 3.5.1 Materials.......................................................................................................................9 3.5.2 Joints..........................................................................................................................10 3.5.3 Resistance models ......................................................................................................11 3.6 SPECIAL PROBLEMS AND RELEVANT CONVERSION FACTORS ............................ 11 3.6.1 Environmental conversion factor ηa ...........................................................................11 3.6.2 Conversionfactor for long-term effects ηl .................................................................11 3.7 ANALYSIS CRITERIA......................................................................................................... 12 3.8 VERIFICATION CRITERIA ................................................................................................ 12 3.9 STRAIN EVALUATION...
NATIONAL RESEARCH COUNCIL OF ITALY
ADVISORY COMMITTEE ON TECHNICAL RECOMMENDATIONS FOR CONSTRUCTION
Guide for the Design and Construction of Structures made of FRP Pultruded Elements
CNR-DT 205/2007
ROME – CNR October 9th, 2008
CNR – Advisory Committee on Technical Recommendations for Construction
Thisdocument is subject to copyright.
No part of this publication may be stored in a retrieval system, or transmitted in any form or by any means - electronic, mechanical, recording, or otherwise – without the prior written permission of the Italian National Research Council. The reproduction of this document is permitted for personal, noncommercial use.
ROME – CNR October 9th, 2008 CNR – DT 205/2007
CONTENTS
1 FOREWORD................................................................................................................................. 1 1.1 PUBLIC HEARING................................................................................................................. 2 1.2 SYMBOLS............................................................................................................................... 3 2 CHARACTERISTICS OF FRP PULTRUDES ......................................................................... 6 2.1 QUALITY CONTROL ............................................................................................................ 6 2.2 ACCEPTANCE CRITERIA.................................................................................................... 6 3 BASIS OF DESIGN ...................................................................................................................... 7 3.1 BASIC REQUIREMENTS ...................................................................................................... 7 3.2 SERVICE LIFE OF THE STRUCTURE................................................................................ 7 3.3 DURABILITY REQUIREMENTS ......................................................................................... 7 3.4 GENERAL DESIGN PRINCIPLES ........................................................................................ 8 3.4.1 General.........................................................................................................................8 3.4.2 Calculations..................................................................................................................8 3.4.3 Properties of the materials, elements and products......................................................8 3.4.4 Design capacity............................................................................................................9 3.5 PARTIAL COEFFICIENTS .................................................................................................... 9 3.5.1 Materials.......................................................................................................................9 3.5.2 Joints..........................................................................................................................10 3.5.3 Resistance models ......................................................................................................11 3.6 SPECIAL PROBLEMS AND RELEVANT CONVERSION FACTORS ............................ 11 3.6.1 Environmental conversion factor ηa ...........................................................................11 3.6.2 Conversionfactor for long-term effects ηl .................................................................11 3.7 ANALYSIS CRITERIA......................................................................................................... 12 3.8 VERIFICATION CRITERIA ................................................................................................ 12 3.9 STRAIN EVALUATION...
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