《混凝土结构原理与设计》国内外规范：CSA A23.3-04 - 加拿大标准协会 Design of Concrete Structures.pdf_大学文库

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Legal Notice for Standards Canadian Standards Association (CSA) standards are developed through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing varied viewpoints and interests to achieve consensus and develop a standard. Although CSA administers the process and establishes rules to promote fairness in achieving consensus, it does not independently test, evaluate, or verify the content of standards. Disclaimer and exclusion of liability This document is provided without any representations, warranties, or conditions of any kind, express or implied, including, without limitation, implied warranties or conditions concerning this document’s fitness for a particular purpose or use, its merchantability, or its non-infringement of any third party’s intellectual property rights. CSA does not warrant the accuracy, completeness, or currency of any of the information published in this document. CSA makes no representations or warranties regarding this document’s compliance with any applicable statute, rule, or regulation. IN NO EVENT SHALL CSA, ITS VOLUNTEERS, MEMBERS, SUBSIDIARIES, OR AFFILIATED COMPANIES, OR THEIR EMPLOYEES, DIRECTORS, OR OFFICERS, BE LIABLE FOR ANY DIRECT, INDIRECT, OR INCIDENTAL DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES, HOWSOEVER CAUSED, INCLUDING BUT NOT LIMITED TO SPECIAL OR CONSEQUENTIAL DAMAGES, LOST REVENUE, BUSINESS INTERRUPTION, LOST OR DAMAGED DATA, OR ANY OTHER COMMERCIAL OR ECONOMIC LOSS, WHETHER BASED IN CONTRACT, TORT (INCLUDING NEGLIGENCE), OR ANY OTHER THEORY OF LIABILITY, ARISING OUT OF OR RESULTING FROM ACCESS TO OR POSSESSION OR USE OF THIS DOCUMENT, EVEN IF CSA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES. In publishing and making this document available, CSA is not undertaking to render professional or other services for or on behalf of any person or entity or to perform any duty owed by any person or entity to another person or entity. The information in this document is directed to those who have the appropriate degree of experience to use and apply its contents, and CSA accepts no responsibility whatsoever arising in any way from any and all use of or reliance on the information contained in this document. CSA is a private not-for-profit company that publishes voluntary standards and related documents. CSA has no power, nor does it undertake, to enforce compliance with the contents of the standards or other documents it publishes. Intellectual property rights and ownership As between CSA and the users of this document (whether it be in printed or electronic form), CSA is the owner of all works contained herein that are protected by copyright, all trade-marks (except as otherwise noted to the contrary), and all inventions and trade secrets that may be contained in this document, whether or not such inventions and trade secrets are protected by patents and applications for patents. The unauthorized use, modification, copying, or disclosure of this document may violate laws that protect CSA’s intellectual property and may give rise to a right in CSA to seek legal redress for such use, modification, copying, or disclosure. CSA reserves all intellectual property rights in this document. Authorized use of this document This document is being provided by CSA for informational and non-commercial use only. The user of this document is authorized to do only the following: If this document is in electronic form: . load this document onto a computer for the sole purpose of reviewing it; . search and browse this document; and . print this document. Limited copies of this document in print or paper form may be distributed only to persons who are authorized by CSA to have such copies, and only if this Legal Notice appears on each such copy. In addition, users may not and may not permit others to . alter this document in any way or remove this Legal Notice from the attached standard; . sell this document without authorization from CSA; or . make an electronic copy of this document. If you do not agree with any of the terms and conditions contained in this Legal Notice, you may not load or use this document or make any copies of the contents hereof, and if you do make such copies, you are required to destroy them immediately. Use of this document constitutes your acceptance of the terms and conditions of this Legal Notice

Canadian Standards Association gn of concrete structures 9.3.1 General 34 9.3.2 Floor and roof loads 34 9.3.3 Moment and shear coefficients 34 Analysis by strut-and-tie models 35 9.5 Finite element analysis 35 9.6 Elastic plate analysis 36 Plastic analysis 36 9.8 Control of deflections 36 9.8.1 General 36 9.8.2 One-way construction(non-prestressed) 36 9.8.3 Two-way construction(non-prestressed) 38 9.8.4 Prestressed concrete construction 38 9.8.5 Composite construction 39 10 Flexure and axial loads 40 10.1 General principles 40 10.1.1 General 40 10.1.2 Plane sections assumption 41 10.1.3 Maximum concrete strain 41 10.14 Balanced strain conditions 41 10.1.5 Tensile strength of concrete 41 10.1.6 Concrete stress-strain relationship 41 10. 1.7 Equivalent rectangular concrete stress distribution 41 Flexural members- Distance between lateral supports 41 Flexural members -T-beams 42 Flexural members-Joist construction 42 Flexural members- Reinforcement 42 10.5.1 Minimum reinforcement 42 10.5.2 Limit of c/d for yielding of tension reinforcement 43 10.5.3 Reinforcement in T-beam flanges 43 Beams and one-way slabs-Crack control 43 10.6.1 Crack control parameter 43 10.6.2 Skin reinforcement 44 10.7 Deep flexural members 44 ).8 Design of bearing zones 44 10.9 Columns- Reinforcement limits 44 10.10 Columns - Resistance 45 10.11 Columns- Design dimensions 46 10.11.1 Equivalent circular column 46 10.11.2 Column built monolithically with wall 46 10.11.3 Isolated column with interlocking spirals 46 10.12 Columns- Transmission of loads through floor system 46 10.14 Member properties for computation of slenderness effects 47 10.14.1 Genera47 10.14.2 Radius of gyration 47 10.14.3 Unsupported length of compression members 4 10.14.4 Designation as non-sway 48 10.14.5 Columns in non-sway frames or storeys 48 10.14.6 Columns in sway frames or storeys 48 10.15 Slenderness effects-Non-sway frames 48 10. 15.1 Effective length factor 48 10.15.2 Non-sway frames 48 10.15.3 Member stability effect 49 December 2004

© Canadian Standards Association Design of concrete structures December 2004 v 9.3.1 General 34 9.3.2 Floor and roof loads 34 9.3.3 Moment and shear coefficients 34 9.4 Analysis by strut-and-tie models 35 9.5 Finite element analysis 35 9.6 Elastic plate analysis 36 9.7 Plastic analysis 36 9.8 Control of deflections 36 9.8.1 General 36 9.8.2 One-way construction (non-prestressed) 36 9.8.3 Two-way construction (non-prestressed) 38 9.8.4 Prestressed concrete construction 38 9.8.5 Composite construction 39 10 Flexure and axial loads 40 10.1 General principles 40 10.1.1 General 40 10.1.2 Plane sections assumption 41 10.1.3 Maximum concrete strain 41 10.1.4 Balanced strain conditions 41 10.1.5 Tensile strength of concrete 41 10.1.6 Concrete stress-strain relationship 41 10.1.7 Equivalent rectangular concrete stress distribution 41 10.2 Flexural members — Distance between lateral supports 41 10.3 Flexural members — T-beams 42 10.4 Flexural members — Joist construction 42 10.5 Flexural members — Reinforcement 42 10.5.1 Minimum reinforcement 42 10.5.2 Limit of c /d for yielding of tension reinforcement 43 10.5.3 Reinforcement in T-beam flanges 43 10.6 Beams and one-way slabs — Crack control 43 10.6.1 Crack control parameter 43 10.6.2 Skin reinforcement 44 10.7 Deep flexural members 44 10.8 Design of bearing zones 44 10.9 Columns — Reinforcement limits 44 10.10 Columns — Resistance 45 10.11 Columns — Design dimensions 46 10.11.1 Equivalent circular column 46 10.11.2 Column built monolithically with wall 46 10.11.3 Isolated column with interlocking spirals 46 10.12 Columns — Transmission of loads through floor system 46 10.13 Slenderness effects — General 46 10.14 Member properties for computation of slenderness effects 47 10.14.1 General 47 10.14.2 Radius of gyration 47 10.14.3 Unsupported length of compression members 48 10.14.4 Designation as non-sway 48 10.14.5 Columns in non-sway frames or storeys 48 10.14.6 Columns in sway frames or storeys 48 10.15 Slenderness effects — Non-sway frames 48 10.15.1 Effective length factor 48 10.15.2 Non-sway frames 48 10.15.3 Member stability effect 49

A23.3-04 © Canadian Standards Association vi December 2004 10.16 Slenderness effects — Sway frames 49 10.16.1 Effective length factor 49 10.16.2 End moments 49 10.16.3 Calculation of δsMs 50 10.16.4 Slenderness limit 50 10.16.5 Strength and stability checks 50 10.16.6 Moment magnification for flexural members 50 10.17 Composite columns — General 51 10.18 Composite column with spiral reinforcement 51 10.19 Composite column with tie reinforcement 52 11 Shear and torsion 53 11.1 General 53 11.1.1 Flexural regions 53 11.1.2 Regions near discontinuities 53 11.1.3 Interface regions 53 11.1.4 Slabs and footings 53 11.1.5 Alternative methods 53 11.2 Design requirements 53 11.2.1 Tension due to restraint 53 11.2.2 Variable depth members 53 11.2.3 Openings 53 11.2.4 Types of shear reinforcement 53 11.2.5 Anchorage of shear reinforcement 54 11.2.6 Types of torsion reinforcement 54 11.2.7 Anchorage of torsion reinforcement 54 11.2.8 Minimum shear reinforcement 54 11.2.9 Consideration of torsion 55 11.2.10 Effective web width 55 11.2.11 Reduced prestress in transfer length 56 11.2.12 Hanger reinforcement for beams supporting other beams 56 11.3 Design for shear and torsion in flexural regions 57 11.3.1 Required shear resistance 57 11.3.2 Sections near supports 57 11.3.3 Factored shear resistance 57 11.3.4 Determination of Vc 57 11.3.5 Determination of Vs 57 11.3.6 Determination of β and θ 58 11.3.7 Proportioning of transverse reinforcement 60 11.3.8 Maximum spacing of transverse reinforcement 60 11.3.9 Proportioning of longitudinal reinforcement 60 11.3.10 Sections subjected to combined shear and torsion 61 11.4 Strut-and-tie model 62 11.4.1 Structural idealization 62 11.4.2 Proportioning of strut 62 11.4.3 Proportioning of ties 64 11.4.4 Proportioning of node regions 64 11.4.5 Crack control reinforcement 64 11.5 Interface shear transfer 64 11.5.1 General 64 11.5.2 Values of c and µ 65 11.5.3 Alternative equation for shear stress resistance 65 11.5.4 Values of σ and ρ v 65 11.5.5 Inclined shear friction reinforcement 65