SNiP 2.03.01-84: Concrete and Reinforced Concrete Structures

142 Pages·1997·4.331 MB·English

by  NATIONAL CODES & STANDARDS OF RUSSIA (SNIP)

911RWIGIUIRIESS
SNIP 2.03.01-84
1997 Edition
National
Building Codes
Of Russia
Concrete and
Reinforced Concrete
Structures
SNIP 2.03.01-84
SNIP 2.03.01-84 Concrete and Reinforced
Concrete Structures.
This publication is a compilation of building codes and
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SNIP BUILDING CODES OF RUSSIA
Contents
(cid:9) ECCENTRICALLY COMPRESSED MEMBERS WITH
SNIP CUSTOMER SERVICE AND SALES III RECTANGULAR AND ANNULAR SECTIONS (cid:9) 49
(cid:9)
At Your Service III MEMBERS IN CENTRAL TENSION (cid:9) 54
Contacts III (cid:9)
Change of Address Ill RECTANGULAR MEMBERS IN ECCENTRIC TENSION54
Terms III (cid:9)
Catalogs III (cid:9) TYPICAL CASE OF DESIGN (FOR ANY SECTION,
Payment III EXTERNAL FORCES AND REINFORCEMENT) (cid:9) 56
Discounts III (cid:9)
Shipping III STRENGTH ANALYSIS OF SECTIONS INC(cid:9)LINED TO
THE LONGITUDINAL AXIS OF A MEMBER 59
SUMMARY IV (cid:9) STRENGTH ANALYSIS OF SPATIAL SECTIONS
(MEMBERS IN BENDING AND TORSION) (cid:9) 64
Introduction To SNIP IV (cid:9)
Phonetic Equivalents RECTANGULAR MEMBERS (cid:9) 65
DESIGN OF REINFORCED CONCRETE MEMBERS FOR
CHAPTER 1. GENERAL 1
LOCAL LOADS (cid:9) 67
(cid:9)
STRENGTH UNDER LOCAL COMPRESSION 67
BASIC PROVISIONS
(cid:9)
STRENGTH UNDER PUNCHING 70
BASIC DESIGN REQUIREMENTS 2(cid:9)
(cid:9)
BREAKING-OFF STRENGTH 71
SPECIAL REQUIREMENTS FOR DESIGN OF
(cid:9)
PRESTRESSED STRUCTURES 6 (cid:9) DESIGN OF INSERTS 72
BASIC RULES OF CALCULATION OF PLANE AND FATIGUE STRENGTH OF REINFORCED CONCRETE
MASSIVE STRUCTURES WITH REGARD TO NON- MEMBERS (cid:9) 74
LINEAR CHARACTERISTICS OF REINFORCED
CONCRETE 14
CHAPTER 4 . CALCULATION OF MEMBERS OF
REINFORCED CONCRETE STRUCTURES BY
CHAPTER 2 . MATERIALS FOR CONCRETE AND
GROUP TWO LIMIT STATE (cid:9) 75
REINFORCED CONCRETE STRUCTURES (cid:9) 17
DESIGN FOR CRACKING OF REINFORCED
CONCRETE (cid:9) 17
CONCRETE MEMBERS (cid:9) 75
SPECIFIED AND DESIGN CHARACTERISTICS OF
CRACKING NORMAL TO THE LONGITUDINAL AXIS OF
CONCRETE (cid:9) 21
A MEMBER (cid:9) 75
REINFORCING STEEL (cid:9) 22
CRACKING INCLINED TO THE LONGITUDINAL AXIS OF
SPECIFIED AND DESIGN CHARACTERISTICS OF A MEMBER (cid:9) 79
REINFORCEMENT (cid:9) 32
CALCULATING THE CRACK WIDTH OF REINFORCED
CONCRETE MEMBERS (cid:9) 79
CHAPTER 3 . CALCULATION OF MEMBERS OF
THE WIDTH OF CRACKS NORMAL TO THE
CONCRETE AND REINFORCED CONCRETE
LONGITUDINAL AXIS OF A MEMBER (cid:9) 80 .
STRUCTURES BY GROUP ONE LIMIT STATE 41
THE WIDTH OF CRACKS INCLINED TO THE
(cid:9)
LONGITUDINAL AXIS OF A MEMBER 82
STRENGTH DESIGN OF CONCRETE MEMBERS 41
CALCULATING THE CLOSURE OF CRACKS IN
ECCENTRICALLY COMPRESSED MEMBERS 42
REINFORCED CONCRETE MEMBERS (cid:9) 83
BENDING MEMBERS 45
CLOSURE OF CRACKS NORMAL TO THE
STRENGTH DESIGN OF REINFORCED CONCRETE LONGITUDINAL AXIS OF A MEMBER (cid:9) 83
MEMBERS 45
CLOSURE OF CRACKS INCLINED TO THE
STRENGTH DESIGN OF SECTIONS NORMAL TO THE LONGITUDINAL. AXIS OF A MEMBER (cid:9) 84
(cid:9) (cid:9)
LONGITUDINAL CE! JTER LINE OF A MEMBER 45
CALCULATING DEFORMATIONS OF REINFORCED
(cid:9)
RECTANGUALR. T-SHAPED. I-SHAPED AND CONCRETE MEMBERS (cid:9) 84
(cid:9)
CIRCULAR MEMBERS IN BENDING 47
nom
(cid:9)
BUILDING CODES OF RUSSIA S5200184 - I
CALCULATING THE CURVATURE OF REINFORCED APPENDIX 1. PRINCIPAL TYPES AND
CONCRETE MEMBERS IN AREAS WITHOUT CRACKS APPLICATION OF REINFORCING STEEL IN
IN THE TENSION ZONE (cid:9) 54
CONCRETE STRUCTURES (cid:9) 115
CALCULATING THE CURVATURE OF REINFORCED
CONCRETE MEMBERS IN AREAS WITH CRACKS IN
THE TENSION ZONE 86 APPENDIX 2. APPLICATION OF CARBON STEEL
CALCULATION OF DEFLECTIONSI (cid:9) 89 FOR INSERTS (cid:9) 117
CHAPTER 5 . STRUCTURAL DETAILING (cid:9) 93
APPENDIX 3. PRINCIPAL TYPES OF WELDED
CONNECTIONS OF REINFORCEMENT (cid:9) 118
MINIMUM SECTION SIZE (cid:9) 93
PROTECTIVE LAYER OF CONCRETE (cid:9) 93
APPENDIX 4. PRINCIPAL TYPES OF WELDED
MINIMUM SPACING OF REINFORCING BARS(cid:9) 95
CONNECTIONS OF BAR REINFORCEMENT
(cid:9)
ANCHORAGE OF ORDINARY RdINFORCEMENT (cid:9) 96 WITH ROLLED STEEL MEMBERS 122
LONGITUDINAL REINFORCEMENT OF MEMBERS 98
TRANSVERSE REINFORCEMENT (cid:9) 100 APPENDIX 5. SYMBOLS(cid:9) 125
WELDED CONNECTIONS OF THE REINFORCEMENT
AND INSERTS (cid:9) 102 (cid:9)
KEY WORDS 128
LAP CONNECTIONS OF NON-PRESTRESSED
REINFORCEMENT (WITHOUT WELDING) (cid:9) 103
JOINTS OF PRECAST STRUCTURAL COMPONENTS104 LIST O(cid:9) F REFERENCE DOCUMENTS FOUND IN
TEXT 130
SPECIAL REQUIREMENTS (cid:9) 106
SPECIAL REQIREMENTS TO PRESTRESSED
CONCRETE MEMBERS 107 CONVERSION TABLES 131
(cid:9)
Graphic Scales 131
CHAPTER 6 . ASSESSMENT OF CONCRETE (cid:9)
SI Prefixes 131
(cid:9)
STRUCTURES (cid:9) 109 Si Units, Derived Units and Symbols 132
(cid:9)
Unit Conversion(cid:9) Factors 133
SI Units Length 135
(cid:9)
GENERAL (cid:9) 109 St Units Area 135
THE ASSESSMENT PROCEDURE (cid:9) 110
THE ANALYSIS AND DETAILING OF STRUCTURES TO
BE STRENGTHENED (cid:9) 112
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IMMO BUILDING CODES OF RUSSIA S5200184 - 111
Summary
This Code shall be applied to the design of plain concrete(cid:127) and reinforced concrete structures of buildings and structures of various
types constructed in areas with temperatures not exceeding +50 °C and not lower than -70 °C. This Code establishes standards for
the design of concrete and reinforced concrete of normal-weight concrete, fine-aggregate concrete, lightweight, cellular, aerated and
self-stressed concrete.
This Code shall not be applied to concrete and reinforced concrete members of hydraulic structures, bridges, transportation tunnels,
culverts, pavements of roads, highways and airfields, structures of feoccement, structures of concrete with an average density lower
than 500 kg/m3 and higher than 2500 kg/m3, polymer modified concrete, with gypsum and special-purpose binders, concrete
containing with special and organic aggregates, and porous concrete. The design of concrete and reinforced concrete structures
operated under special conditions (seismic, corrosive environment, high humidity, etc.) shall meet additional requirements set by the
appropriate regulatory documents. This Code is using classification of concrete by design strength established by ST SEV 1406-78.
List of symbols (in compliance with ST SEV 1565-79) used in the text can be found in Appendix a.
Ptain concrete. hereinafter referred to as "concrete "(vs. 'reinforced concrete is used to define concrete that is unreinforced or contains less rernforceinent than the
minimum specified for reinforced concrete by appropriate federal standards. - Editor
Introduction To SNIP (cid:9) Phonetic Equivalents
SNIP is a uniform system of national construction
Russian English Russian English
regulations of the Russian Federation. SNIP includes
A A a a
building, structural, mechanical, electrical, and codes; fire
and life safety codes; standards for building materials and 6 8 6 b
products; technical specifications; codes of practice; cost B V B v
estimate methods.
r G r 9
Unlike ANSI, NEPA, or BOCA, SNIP is not an organization
for code development, administration, or enforcement. It is a A D A d
system of standards, collectively developed by over 60 E E o e
professional research institutes and laboratories under the
supervision of the State Committee for Housing and 3K ZH (cid:9) I )K zh
Construction Policy of Russia (formerly, the Ministry of 3 Z 3 Z
Construction), which is responsible for SNIP code H I N I
enforcement throughout the Russian Federation.
K K x k
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50000000 - IV BUILDING CODES OF RUSSIA EMI
SNIP 2.03.01-84 (cid:9) CONCRETE AND REINFORCED CONCRETE STRUCTURES
Chapter 1 (cid:9) GENERAL
BASIC PROVISIONS
Section 1.1. Concrete and reinforced concrete structures shall provide required reliability to prevent
all types of limit states by introducing appropriate structural analysis, selection of
materials, sizing, and design in accordance with ST SEV 1406-78.
Section 1.2. The selection of structural solutions shall be based on technical specifications and
financial conditions of a particular project to ensure reduced consumption of materials,
-energy, labor and implication of cost-saving methods to be achieved by:
(cid:127) using efficient building materials and structures;
(cid:127) reducing weight of structures;
(cid:127) full utilization of physical and mechanical characteristics of materials;
(cid:127) using domestic building materials;
(cid:127) complying with requirements for economic use of major building materials.
Section 1.3. Structural design shall ensure the required strength, stability and 3-dimensional stiffness
of buildings and structures as a whole and of individual members in particular at all
stages of construction and maintenance.
Section 1.4. Members of precast structures shall meet specifications for fabrication at.specialized
facilities.
The selection of precast elements shall give preference to pre-stressed members of high-
strength concrete and steel as well as to members of light-weight and cellular concrete
where their use is not limited by other regulations. It is advisable to fabricate precast
elements as large as possible considering load capacity of lifting mechanisms, fabrication
specifications and transportability of elements to construction site.
Section 1.5. (cid:9) Standard sizes shall be used for the design of cast-in-place structures to allow use of
standard framework assemblies. Reinforcement elements shall be used in enlarged
assemblies if possible.
Section 1.6. (cid:9) The connections of precast structures shall be designed for proper strength and
durability.
The connection elements of precast structures shall be designed and fabricated so that
they can safely transfer forces, sustain loads, and provide reliable adhesion of the joint
filling concrete with the precast components.
Section 1.7. (cid:9) Concrete members shall be used:
a) mostly in structures working under compression with low eccentricities of
longitudinal force not exceeding values given in Section 3.3;
b) particularly in structures working under compression with highet eccentricities and
in flexible structures. when their failure does not endanger human life or equipment
(members sitting on the solid foundations, etc.)
MEM BUILDING CODES OF RUSSIA S5200184 - 1
SNIP-2.03.01-84 (cid:9) CONCRETE AND REINFORCED CONCRETE STRUCTURES
Note: (cid:9) Concrete structures shall be defined as the ones, for which strength in the process of use is solely
ensured by concrete.
Section 1.8. (cid:9) Design winter temperature of outdoor air shall be assumed to be the average temperature
measured during five coldest days in a row depending on the region of the site in
accordance with SNIP 2.01.01.82 Climatology and Geophysics. Design temperatures for
the structural performance shall be established in the Assignment for Design.
The outdoor air humidity shall be assumed as the average relative humidity of the hottest
month depending on the region as the relative humidity inside heated room in accordance
with SNIP 2.01.01.82 Climatology and Geophysics.
Section 1.9. (cid:9) Symbols and their indexes for basic parameters used for calculation of structures used in
the text are in compliance with ST SEV 1565-79.
BASIC DESIGN REQUIREMENTS
Section 1.10. Concrete and reinforced concrete shall meet design requirements for structural
calculations for load-carrying capacity (Group 1 ultimate limit state) and for suitability
for ordinary use (Group 2 ultimate limit state).
a) The Group 1 ultimate limit state design shall protect structures against:
brittle, ductile or any other mode of failure (strength design taking into account
deflection of a structure before failure where necessary);
buckling of a structure (design for stability of thin-walled members, etc.) or
stability of position (design for tilting or slipping of retaining walls, for floating
of submerged or underground tanks, pump plants, etc.);
fatigue failures (fatigue design of members under alternating loads, moving or
pulsing, such as crane beams, sleepers, frame foundations and floors for some
unbalanced mechanisms, etc.);
failure under combined action of force factors and unfavorable impacts of the
environment (periodic or continuous action of a corrosive environment, alternate
freezing and thawing, fire, etc.);
b) The Group 2 serviceability limit state design shall protect structures against:
formation of cracks and their excessive or prolonged development (if cracking or
their development is inadmissible during the use of structure);
excessive displacements (deflections, skewing and rotation angles, and
oscillations).
Section 1.11 (cid:9) The limit state design of a structure as a whole or of structural elements shall be carried
out for all stages, including fabrication, transportation, erection and service. Calculation
methods shall correspond to the structural solutions.
It is allowed not to perform the design for the crack width and for deformation if it is
determined by the test or proved by practice that the crack width in the given concrete
structure does not exceed critical values and the stiffness of the structure is sufficient
during its operation.
Section 1.12. (cid:9) Value of loads and stresses, reliability factors for loads, combination coefficients, and
classification of loads as of permanent and temporary, shall be assumed in accordance
with SNIP 2.01.07-89 Loads and Stresses.
S5200184 2 BUILDING CODES OF RUSSIA SNIP
-
SNIP 2.03.01-84 (cid:9) CONCRETE AND REINFORCED CONCRETE STRUCTURES
The loads shall be multiplied by specified reliability factors depending on the
significance of buildings and structures in accordance with the requirements established
by the federal building authorities.
The loads to be considered in the Group 2 limit state design (service loads) shall be
assumed as specified in Sections 1.16 and 1.20. Sustained loads shall include a part of
the total of live loads specified in SNIP 2.01.07-89 Loads and Stresses. Total live load
shall be reduced by the value already included in the sustained load. The load
combination coefficients and the load reduction coefficients shall be related to the total
of short-term loads.
For structures exposed to solar radiation and constructed in climatic sub-region IVa, the
calculations shall take temperature effects into account in accordance with SNIP
2.01.01.82 Climatology and Geophysics.
Fire resistance of concrete and reinforced concrete structures shall be provided in
accordance with appropriate regulatory documents.
Section 1.13. Calculations of forces imposed on precast elements by lifting, transportation and
erection, shall consider dead load to be applied with a dynamic coefficient as follows:
for transportation (cid:9) 1.60;
for lifting and installation (cid:9) 1.40.
For the specified coefficients it is allowed to assume reduced values under certain
circumstances but not lower than 1.25.
Section 1.14. Strength, cracking, crack width and deformations of mixed (cast-in-place and precast)
and cast-in-place structures with load-bearing steel shall be calculated for the following
two stages of structure's behavior:
a) for the effects of the weight of concrete places at the site and for other loads
imposed at this stage of erection before a specified strength is attaied by concrete;
b) for loads imposed at this stage of erection and during service after the specified
strength is attained by concrete.
Section 1.15. (cid:9) Forced is statically indeterminate reinforced concrete structures caused by loads and
forced displacementsidue to temperature changes, moisture content of concrete,
displacement of supports. etc.), and those on statically determinate structures when the
latter are calculated according to the deformation mode, shall be determined with regards
to inelastic deformations of concrete and steel and to the presence of cracks.
For statically indeterminate structures and for intermediate design stages with respect to
inelastic properties of reinforced concrete, forces can be defined on the assumption of
their linear elasticity, if design procedures for statically indeterminate structures have not
been developed yet with respect to inelastic properties of reinforced concrete.
Section 1.16. (cid:9) Crack resistance of structures or parts thereof shall meet specifications of appropriate
categories according to their service environment and to the type of the reinforcement
used therein as follows:
a) Category 1: cracking is not permitted;
bl Category 2: brief cracking with a limited width is permitted provided that
cracks are closed (compressed) securely later;
e) Category 3 brief (cid:9) -vith a limited width a. and prolonged cracking with
Nidth ,.k„: are permitteu
SHIPPF BUIL:ING :GEES OF RUSSIA 55200184 - 3