美国AASHTO 人行天桥规范2009版 -中国道桥网

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资料名称:	美国AASHTO 人行天桥规范2009版
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LRFD Guide Specifications for the Design of
Pedestrian Bridges 2009  pdf共38页
1—GENERAL 
1.1—Scope 
1.2—Manufacturer-Designed Systems 
1.3—Collision Mitigation 
2—PHILOSOPHY 
3—LOADS 
3.1—Pedestrian Loading (PL) 
3.2—Vehicle Load (LL) 
3.3—Equestrian Load (LL) 
3.4—Wind Load (WS) 
3.5—Fatigue Load (LL) 6
3.6—Application of Loads 
3.7—Combination of Loads 
4—FATIGUE 
4.1—Resistance 
4.2--Fracture
5—DEFLECTIONS 
6—VIBRATIONS 
7—STABILITY 
7.1—Half-Through Trusses 
7.1.1—Lateral Frame Design Force 
7.1.2—Top Chord Stability 
7.1.3—Alternative Analysis Procedures 
7.2—Steel Twin I-Girder and Single Tub Girder Systems 
7.2.1—General 
7.2.2—Lateral-Torsional Buckling Resistance—Twin I-Girder 
7.2.3—Lateral-Torsional Buckling Resistance—Singly Symmetric Sections 
8—TYPE SPECIFIC PROVISIONS 
8.1—Arches 
8.2—Steel HSS Members 
8.2.1—General 
8.2.2—Detailing 
8.2.3—Tubular Fracture Critical Members 
8.3—Fiber Reinforced Polymer (FRP) Members 
9—DESIGN EXAMPLE 
Illustrative Example of Key Provisions of Guide Specifications 
General Information 
Truss Members: All Rectangular HSS 
Floorbeams 
Dead Load 
Pedestrian Live Load 
Vehicle Load 
Wind Load 
Total Vertical Loads per Truss 
Truss Member Design Loads 
Truss Top Chord Lateral Support 
Top Chord Compressive Resistance 
Lateral Force to Be Resisted by Verticals 
End Posts 
Deflection 
Vibrations 
Vertical Direction 
Lateral Direction 
Fatigue