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TB 10091-2017 English PDF (TB10091-2017)

TB 10091-2017 English PDF (TB10091-2017)

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TB 10091-2017: Code for Design on Steel Structure of Railway Bridge

This Code is formulated with a view to carry out relevant national laws and regulations and railway technology policies, unify the technical standards for the design on steel structure of railway bridges and make the design on steel structure of railway bridges comply with the requirements of safety and reliability, advance and mature, economy and usability, and environmental protection.
TB 10091-2017
Code for Design on Steel Structure of Railway Bridge
UDC
Industry Standard of the People 's Republic of China
Code for steel structure design of railway bridge
2017-01-02 release
2017-05-01 Implementation
Issued by the State Railway Administration
People 's Republic of China Industry Standard
Code for steel structure design of railway bridge
Organizer. China Railway Bridge Survey and Design Institute Group Co., Ltd Approved by. National Railway Administration
Date of implementation. May 1,.2017
Preface
"Railway Bridge Steel Design Code" TB 10002.2-2005 since the release of China's railway, especially high-speed railway Construction has made remarkable achievements, the Beijing-Shanghai, Beijing-Guangzhou, Zhengzhou West, Kazakhstan and other high-speed railway, Yi Wan, too Bank of China Passenger and freight line railway, Shanxi and southern channel, Mongolian and other heavy railways, the Pearl River Delta and Wuhan city circle intercity railway A large number of railway projects have been completed and opened to traffic, improve the road network structure, an increase of the effective supply of rail transport services. through Over ten years of active exploration and innovation practice, China's railway bridge construction technology has made a major breakthrough, has been among the world Advanced ranks. Nanjing Dashengguan Yangtze River Bridge, Wuhan Tianxingzhou Yangtze River Bridge and a number of deep water, large span, special geological Conditions, the complex structure of the successful construction of the bridge, independent research and development of large tonnage box girder complete sets of technology widely used, In order to further improve the railway bridge technical standards have accumulated rich experience, laid a solid foundation. This specification is based on the requirements of the National Railway Administration to build a railway engineering construction standard system, in order to meet the railway bridge construction Facilities and development needs, unified railway bridge steel design standards, improve the railway bridge steel design level, protection Railway bridge steel structure safety and quality, on the basis of the original norms, summed up in recent years, China's high-speed, inter-city, passenger and cargo Collinear and heavy-duty railway bridge steel construction, operation of the practical experience and scientific research, a comprehensive revision. This specification implements the principles of safety priorities, strengthens quality and safety, conserves resources and protects the environment. Requirements, focus on the overall design, combined with China's national conditions, socio-economic development level, environmental conditions and other factors, reasonable To determine the different transport properties of different types of different levels of railway bridge steel structure of the main design standards, to further mention Rose the norms of scientific and technical economic rationality. In recent years, China's railway steel bridge design field emerged a large number of new Materials, new structures, new processes, including the use of new materials for Q500q steel, all welded joints and integral steel bridge panels With the construction of kilometer railway cable-stayed bridge and suspension bridge, the norms in the summary, to absorb the advanced achievements and mature Experience based on the revised.
This specification consists of 10 chapters, including general principles, terms and symbols, materials and basic allowable stresses, structural forces Calculate the length of the bar, slenderness ratio and component cross-section, component connection, deck system and joint system, steel beam, steel Truss beams, bearings, etc., and another three appendix.
The main technical contents of this revision are as follows.
1. Revised the scope of application of the specification, applicable to high-speed railway, inter-city railway, passenger and freight line ??? and ??? railway, Structural Design of Heavy Haul Railway Bridge.
2. Increase the relevant provisions of Q500q steel.
3. With the national standard "structural steel for bridge" revision, revised steel structure of the steel structure of the relevant provisions. 4. Revised the design requirements for the impact toughness of welded joints (including weld metal and heat affected zones). 5. Increases the fatigue resistance of the 17 structural details; the supplement provides for both axial and bending stresses Calculation of stress amplitude of rods.
6. The two-line coefficient to expand the formation of multi-line coefficient; added high-speed railway, intercity railway fatigue damage correction system The ratio of the stress ratio to the correction coefficient table increases the ratio of the stress ratio. 7. Added the relevant provisions for the stability of the box bar with stiffener. 8. The relevant provisions for the effective width of the flange of the bridge deck of the steel truss girder are added. 9. Added the relevant requirements for the effect of the discontinuity of the temperature change on the structure of the truss composite structure. In the implementation of the norms of the process, I hope the units combined with engineering practice, conscientiously sum up experience, the accumulation of information. Such as Found to need to modify and add the place, please send the views and relevant information to the China Railway Bridge Survey and Design Institute Limited (Wuhan City Economic and Technological Development Zone Bo Xue Road on the 8th, Zip code. 430056), and copy the China Railway Economic Regulation (Beijing Haidian District, North honeycomb Road No. 29, zip code. 100038), for future revision reference. This specification is interpreted by the Ministry of Science, Technology and Law of the State Railway Administration. Organizer. China Railway Bridge Survey and Design Institute Limited
Participated by. China Railway Science Research Institute
China Railway Engineering Design Consulting Group Co., Ltd
Main drafters. Xu Wei, Zhang Yuling, Xu Shengqiao, Liu Hanshun, Du Ping, Gao Jingqing, Gao Xing, Wang Zhiping, TANG He-qiang, XIE Xin, ZHANG Cheng-dong, XU Ke-ying, CUI Xin, WANG Li, TAO Xiao-yan, JIN Ling, ZHAO Bubo. Main reviewers. Wang Zhaohu, Wu Shaohai, Chen Liangjiang, Yang Mengjiao, Liu Yan, Xue Jiagang, Yin Ningjun, Liu Chun, ZHAO Hui-dong, YANG Peng-jian, YANG Yan-hai, CHEN Ke-jian, YAN Yong, WANG Xin-guo, QU Guo-zhao, GUI ???, MAO Wei-qi, TU Man-ming, HU Guang-rui Directory
1 General .1
2 terms and symbols
2.1 Terminology
2.2 symbols .3
3 material and basic allowable stress
3.1 Basic materials .5
3.2 Basic allowable stress
4 internal force calculation
4.1 Principles of structural internal forces calculation
4.2 Strength and stability calculation
4.3 Fatigue calculation .24
The calculated length, slenderness, and cross section of the bar
5.1 Calculate the length of the bar
5.2 allowable maximum slenderness of the bar
5.3 Section of the component
6 component connection
6.1 Mechanical connection
6.2 Weld connection
7 deck system and connection system
7.1 deck system
7.2 Settings of the connection system
8 steel beam
9 steel truss beam
10 seats .51
Appendix A main technical indicators for railway bridge steel
Appendix B Calculation of the bending moment of the beam in the plane of the beam with the vertical load. Appendix C Calculation of internal forces caused by the deformation of the longitudinal and transverse beams of single-wire simply supported steel truss beams.56 Appendix D Requirements for Ultrasonic Flaw Detection of Welded Joints
Appendix E Weld appearance quality requirements
Instructions for this specification
Specification for Steel Structure Design for Railway Bridges
1 General
1.0.1 To implement the relevant national laws and regulations and railway technology policy, unified railway bridge steel design technical standards, so that Railway bridge steel structure design in line with safe and reliable, advanced mature, affordable, environmental protection requirements, the development of this specification. 1.0.2 This specification applies to high-speed railway, inter-city railway, passenger and freight line ??? and ??? railway, heavy rail riveting, Design of Steel Structure for Welding and Full Welding of Bridge. The steel structure of the public and iron bridge alone shall bear the load of the road Of the highway industry-related standards for design.
1.0.3 railway bridge steel structure should have the required strength, stiffness, stability and durability, the main structure of the design The age should be 100 years.
1.0.4 The design of this specification, should still meet the current "Railway Bridge Design Code" (TB 10002) requirements. 1.0.5 steel structure of the components should be standardized, so that the same type of components can be interchangeable. The structure should be easy to process, transport, and safety Equipment, inspection and maintenance.
1.0.6 Bridge cross-structure should be set to pre-camber, pre-camber curve and the dead and semi-static live load generated by the deflection curve shape Basically the same, but in the opposite direction. The vertical deflection caused by dead load and static load is not more than 1/1600 of the span of the bridge , The pre-camber is not set.
1.0.7 Bridge cross structure The transverse overturning stability factor should not be less than 1.3 under the most unfavorable combination of calculated loads. 1.0.8 steel beam should be able to adapt to jack jack up. The top facilities and the structure itself shall be calculated at a height of 1.3 times from the top load. 1.0.9 Offset bridges on the center of the curve and other bridges with eccentric loads should calculate the effect of the partial load on the bridge cross structure. 1.0.10 Railway bridge steel structure design should comply with this specification, should still meet the relevant provisions of the current national standards. 2 terms and symbols
2.1 terminology
Simple support beam
One end for the longitudinal movement of the bearing, one end of the longitudinal fixed bearing at both ends of the beam support. Continuous beam
Two or more spans above the beam, supported by the bearing beam.
2.1.3 truss truss
A planar or spatial lattice structure or component consisting of a number of bars, each of which is mainly subjected to various With the resulting axial force, and sometimes also bear the node bending moment and shear force. Steel beam
To steel as the main building material of the beam.
Strength
Material or component resistance to the ability to resist damage.
Normal stiffness stiffness
Structure or component resistance to deformation.
Deformation deformation
The relative displacement between the points in the structure or component caused by the action. Deflection deflection
In the plane of the moment of action, the axis of the structural member or a point on the middle is caused by deflection perpendicular to the axis or the middle To the line of displacement.
2.1.9 pre-camber camber
In order to offset the bridge across the structure under the action of the deflection of the load, and in the production of the deflection and the direction of the opposite The amount of correction.
2.1.10 main truss (main beam) main truss (main beam)
In the superstructure, the various loads are supported and conveyed to the truss (beam) of the pier and table. 2.1.11 cross beam cross girder
In a steel beam structure, a beam is provided laterally along a bridge axis and supported on a main beam or main truss. 2.1.12 stringer stringer
In a steel beam structure, a beam is provided axially along the bridge and supported on a beam. Bridge deck system
Support the bridge load and pass to the main beam bridge structure.
2.1.14 open bridge grid
Do not lay the ballast, in the longitudinal beam or the main beam on the bridge laying directly on the bridge. Bearing bearing
The means for supporting the upper structure and securing the upper structure to a certain position may vary depending on the material, deformation or Shape the classification. According to the material used in the bearing, can be divided into rubber bearings, steel bearings, PTFE bearings, etc .; Deformation, can be divided into sliding bearings, fixed hinge seat; by shape, can be divided into curved bearings, spherical bearings and so on. 2.1.16 stress amplitude
The maximum stress of the component or connection is the difference between the minimum stress and the algebra. 2.1.17 fatigue allowable stress range for fatigue design
Component or connection in the 2 ?? 106 stress cycle under the fatigue strength. 2.1.18 operating power factor service impact factor
The force coefficient of a component or connection during fatigue inspection. Damage correction factor
And the fatigue stress to match the amplitude, the design load effect into the bridge design life within the operating load Fatigue cumulative damage coefficient.
2.1.20 Ultrasonic hammering ultrasonic hammering
A method of strengthening the surface of a toe to be joined by an ultrasonic device. 2.2 symbols
2.2.1 external force and internal force
N - axial force
M - bending moment
V - Shear
P - Allowable anti - skid bearing capacity of high strength bolts
2.2.2 Stress
2.2.3 Geometric properties
L0 - component length calculated
A - cross-sectional area
I - section moment of inertia
S - area moment
?? - component slenderness ratio
Xyr, r - the radius of rotation of the member cross section on the XX axis and the YY axis B - the center distance between the two main girders (or main trusses)
H - the height of the component
B - the width of the component
Fh - foot size
2.2.4 Calculate the coefficient
F - Dynamic coefficient of live load
0 - Anti - slip coefficient of steel surface with high strength bolted
F - friction coefficient of movable bearing
1 ???
The reduction factor of the axial allowable stress of the center bar
2 - the allowable stress reduction factor of the member only when one main plane is bent C - allowable stress increase coefficient under member oblique bending
M - Number of anti-skid surfaces at high-strength bolts
K - safety factor
3 material and basic tolerable stress
3.1 basic materials
3.1.1 The basic steel of railway steel bridge should be based on the minimum design temperature to meet the bridge design requirements to meet the chemical composition, Mechanical properties, process performance and welding performance, and shall comply with the provisions of Table 3.1.1. The minimum design temperature for the bridge site calendar Year extreme minimum temperature minus 5 ???.
Table 3.1.1 Basic material of railway bridge
Name Steel Grade Quality grade should meet the standard
Steel beam main structure
Q235q D level
Current "structural steel for bridges" (GB/T 714). In kind
See Appendix A for technical conditions.
When the steel plate is subjected to the tensile force in the thickness direction, To the performance requirements, in line with the existing national standard (GB/T 5313) The relevant provisions.
Q345q D, E grade
Q370q D, E grade
Q420q D, E grade
Q500q D, E grade
Bridge auxiliary structure Q235-BZ current "carbon structural steel" (GB/T 700) Connecting steel Q345C Current "low alloy high strength structural steel" (GB/T 1591) rivet
BL2 (riveting snail 2)
BL3 (riveting snail 3)
The current "standard parts with carbon steel hot rolled round steel and wire rod" (GB/T 715)
bolt
Refined bolts
BL2 (riveting snail 2)
BL3 (riveting snail 3)
The current "standard parts with carbon steel hot rolled round steel and wire rod" (GB/T 715)
Thick bolts
BL2 (riveting snail 2)
BL3 (riveting snail 3)
The current "standard parts with carbon steel hot rolled round steel and wire rod" (GB/T 715)
High-strength bolts
20MnTiB (20 manganese titanium boron) The current "alloy structural steel" (GB/T 3077) 35VB (35 vanadium boron) Current GB/T 1231 Appendix A
Nuts and washers
35,45
15MnVB (15 manganese vanadium boron)
The current "high-quality carbon structural steel" (GB/T 699)
Castings (bearing the pendulum, hem, rocker,
Seat board, etc.)
ZG230-450??? (cast steel 230-450 ???)
ZG270-500??? (cast steel 270-500 ???)
The current "general engineering cast carbon steel" (GB/T 11352)
Pin, hinge, roller shaft 35 forged steel "high quality carbon structural steel" (GB/T 699) Round steel boom 35CrMo current "alloy structural steel" (GB/T 3077)
Note. After the test to obtain a sufficient basis, can also be used in line with the bridge structure requirements of other steel. 3.1.2 high-strength large hexagon head bolts, large hex nuts, washers should comply with the current national standard GB/T 1228 ~ 1231 Provisions.
3.1.3 welding performance should be matched with the substrate, the choice of welding materials, welding process should be based on design requirements through Evaluation of welding process.
3.1.4 Railway steel bridge welded joints (including weld metal and heat affected zone) according to the lowest design temperature at the bridge site The value of the impact toughness should not be less than the provisions of Table 3.1.4. Table 3.1.4 Impact toughness of welded joints
Steel Grade Q345q Q370q Q420q Q500q
Test temperature (?? C)
When the minimum design temperature ??? 10 ???, take -10 ???
When -10 ???> the minimum design temperature ??? -20 ???, take -20 ???
When -20 ???> the minimum design temperature ??? -30 ???, take -30 ???
When -30 ???> minimum design temperature ??? -40 ???, take -40 ???
Weld joints of integral joints
Bulk joints perpendicular to the direction of the penetration of the welding butt welding, T-shaped angle Welding, welding of welded joints
Bulk joints in the direction of the direction of non-penetration of the T-shaped fillet welds, edges and corners welds Note. When the structure of the fracture performance of special requirements, the impact toughness of welded joints can be specified separately. 3.1.5 The coating material shall comply with the "Railway Steel Bridge Protective Coating and Coating Supply Technical Conditions" (TB/T 1527). 3.1.6 The elasticity of steel shall be determined in accordance with Table 3.1.6. Table 3.1.6 Steel Elastic Coefficient
Elastic modulus E (MPa) Shear modulus G (MPa) Poisson's ratio ??
2.1 ?? 105 8.1 ?? 104 0.3
3.2 Basic allowable stress
3.2.1 The basic tolerable stresses of the steel shall be determined in accordance with Table 3.2.1. 3.2.2 weld basic allowable stress should be the same with the substrate, and should not be greater than the substrate allowable stress. 3.2.3 high strength bolts pre-tension design value should be based on high-strength bolts screw diameter, performance level according to Table 3.2.3 The provisions to determine.
3.2.4 When using anti-slip high-strength bolts, the design slip resistance should be 0.45. 3.2.5 Permissible stresses for rivets and refined bolts shall be determined in accordance with Table 3.2.5. 3.2.6 The total stability of the axial tolerable stress of the control center shall be determined in accordance with the provisions of Table 3.2.6. 3.2.7 The allowable stress amplitude of fatigue for various components or connections shall be determined in accordance with Table 3.2.7-1. T...

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