Behavior and Design of Trapezoidally Corrugated Web Girders for Bridge Construction: Recent Advances

Description

Corrugated web girders (CWGs), used for bridge construction, differ in important ways from conventional prismatic girders. Behavior and Design of Trapezoidally Corrugated Web Girders for Bridge Construction details the behavior and design of CWGs in bridge construction and includes unique research into high-strength steel. The title gives a comprehensive review of the last decade in CWG design. In-depth explanations of key concepts are given ― such as the accordion effect ― that differentiate these girders from more conventional flat-webbed girders, and the authors also present specialized research into tubular flanged girders. The book distinguishes between prismatic and tapered CWGs, explains failure modes under both shear and flexure, and gives clear figures to illustrate these modes. The volume compares international building codes and offers recommendations for future research. Seven chapters cover –– An introduction to CWGs for bridge construction; Development of bridges with corrugated webs; Real boundary conditions between flange and web; Shear buckling behavior; Flexural buckling behavior; Recent erection methods and; Future research. Half Title Title Copyright Contents Chapter 1 Introduction 1.1 General 1.2 Objectives 1.3 Book organization Chapter 2 Development of bridges with corrugated webs 2.1 General 2.2 Mechanical feature 2.2.1 Bending behavior 2.2.2 Shear behavior 2.2.3 Torsion behavior 2.2.4 Buckling behavior 2.3 Structural layout 2.3.1 Joint between corrugated steel webs and concrete flanges 2.3.2 Joint between corrugated steel webs 2.3.3 Corrugated steel webs with concrete encasement 2.4 Typical construction applications 2.5 New construction technologies 2.5.1 RW cantilever construction 2.5.2 Incremental launching construction 2.6 Future developmental trends of bridge with corrugated steel webs References Chapter 3 Real boundary condition between flange and web 3.1 Scope 3.2 Background 3.3 Elastic shear buckling behavior 3.3.1 Local shear buckling 3.3.2 Global shear buckling 3.3.3 Interactive shear buckling 3.4 Current finite element models 3.5 Verification of finite element models 3.6 General results 3.7 Comparison between finite element critical stresses and available formulas 3.8 Buckling mechanism 3.9 Effects of key parameters on plate segments 3.9.1 Effect of corrugation depth-to-web thickness ratio \(hr/tw\) 3.9.2 Effect of web flat panel width-to-depth ratio \(b/hw\) 3.9.3 Effect of aspect ratio of the web panel \(a/hw\) 3.9.4 Effect of web plate slenderness \(hw/tw\) 3.10 Real behavior between the CW and flanges 3.10.1 Effect of flange width \(bf\) 3.10.2 Extended parametric study on girder segments 3.10.3 Results and evaluation References Chapter 4 Shear buckling behavior 4.1 Scope 4.2 Effect of initial imperfection 4.3 Normal-strength steel prismatic girders 4.3.1 Comparison between design shear strength formula and available experimental full-scale tests 4.3.2 Additional validation of design models 4.4 Normal-strength steel tapered girders 4.4.1 Elastic bifurcation buckling analysis 4.4.2 Nonlinear buckling analysis 4.5 High-strength steel prismatic girders 4.5.1 Input data of the parametric studies 4.5.2 Shear deformations and stress distributions 4.5.3 Ultimate shear strengths and comparisons with design models 4.5.4 Effects of key parameters on the shear behavior of the bridge girders with corrugated webs 4.6 High-strength steel tapered girders 4.6.1 Parametric study 4.6.2 Fundamental behavior 4.6.3 Design strength References Chapter 5 Flexural buckling behavior 5.1 General 5.2 Lateral-torsional buckling of corrugated web girders 5.3 High-strength steels in bridge construction 5.4 Homogenous corrugated web girders built up from high strength steels 5.4.1 Description of virtual tests 5.4.2 Behavior of homogenous corrugated web girders built up with high strength steels 5.4.3 Effects of key parameters 5.4.4 Comparison with EC3 design lateral-torsional buckling resistance 5.4.5 Slenderness limit of inelastic lateral-torsional buckling 5.5 Hybrid corrugated web girders built up from high strength steels 5.5.1 Effect of corrugated web material 5.5.2 Behavior of hybrid corrugated web girders built up with high strength steels 5.5.3 Effects of key parameters 5.5.4 Design strengths 5.5.5 Slenderness limit of inelastic lateral-torsional buckling 5.6 Solved examples 5.6.1 Example #1 5.6.2 Example #2 5.6.3 Example #3 References Chapter 6 Stress analysis of I-girders with concrete-filled tubular flange and corrugated web 6.1 General 6.2 Normal stress in flange 6.3 Shear stress in corrugated web 6.4 Flexural yielding strength of I-girders 6.5 Experimental verification 6.5.1 Specimens and test setup 6.5.2 Results and discussions 6.6 Numerical verification 6.6.1 Finite element modeling 6.6.2 Verification of finite element models 6.6.3 Parametric study References Chapter 7 Recent erection methods 7.1 General 7.2 New hanging basket system 7.2.1 Disadvantages of traditional hanging baskets 7.2.2 Proposal of new hanging basket construction technology 7.2.3 Structural form of the improved hanging basket system 7.3 Asynchronous pouring rapid construction method technical features analysis 7.3.1 Construction steps of standard segments 7.3.2 Load-bearing corrugated steel webs 7.3.3 Lightweight hanging basket system 7.3.4 Transformation of hanging basket structural system 7.3.5 Extension of working platform 7.3.6 Shortening of segmental construction period 7.4 Case study 7.4.1 Construction of segment #0 and segment #1 7.4.2 Asynchronous construction of non-standard segment #2 7.4.3 Asynchronous construction of standard segments #3^^e2^^88^^bc #16 7.4.4 Construction of closure segment References Chapter 8 Future research 8.1 Recommendations 8.2 Trends for future relevant works Index