allowable stress design of composite plate girder bridge

Ngày tải lên: 10/12/2013, 01:15

... of box girder bridges girder, J Struct Div ASCE, 106(ST11), 2345, 1980 Subcommittee on Box Girders of the ASCE-AASHTO Task Committee on Flexural Members, Progress report on steel box girder bridges, ... not exceed 0.95Rh Fy f 13.8 Design Example Two-Span Continuous Box -Girder bridge Given A two-span continuous composite box -girder bridge that has two equal spans of 45 m The superstructure is ... LLC FIGURE 13.3 Typical components of a composite box girder In multiple box -girder design, primary consideration should be given to flexure In single boxgirder design, however, both torsion and...

Ngày tải lên: 08/07/2014, 12:20

... Part 3: Design in composite construction; — Section 3.1: Code of practice for design of simple and continuous composite beams; — Part 4: Code of practice for design of composite slabs with profiled ... concrete and composite bridges BS 5400-5:1979, Code of practice for design of composite bridges BS 5950, Structural use of steelwork in building BS 5950-9, Code of practice for stressed skin design7 ) ... load Dp Overall depth of profiled steel sheets Ds Overall depth of composite slab ds Effective depth of slab to centroid of profiled steel sheets Modulus of elasticity of profiled steel sheets...

Ngày tải lên: 08/07/2014, 22:20

... Coefficient Ibc = Second moment of area of the uncracked composite beam Ic = Second moment of area of the column L = Length of the beam (including the haunch) λ = Slenderness of the beam length between ... moment regions of the beam is allowed The redistribution of moment arises from cracking and loss of stiffness of the composite section and local yielding of the steel beam The degree of the local ... Curve of Specimen B3 Figure 4.36 View after Failure of Specimen B3 Figure 4.37 Inelastic Buckling of Left Haunch Flange of the Beam B3 Figure 4.38 Inelastic Buckling of Right Haunch Flange of the...

Ngày tải lên: 16/09/2015, 17:12

... of steel girder and Negative moment Steel girder + Top slab Steel girder Steel girder + Top slab Steel girder Steel girder +Top slab Steel girder + Bottom slab Steel girder + Top slab Steel girder ... Comparison of open section bridge designs .138 6.9 Comparison of the bending stress 139 6.10 Comparison of designs of Model 140 - xii - CHAPTER INTRODUCTION 1.1 Introduction Steel box girders ... of the structural characteristics of the bridge system It has been researched, developed, and applied over 200 bridges for prestressed concrete bridges, preflex bridges and steel box -girder bridges...

Ngày tải lên: 13/11/2014, 06:40

... function of each of the components of a bridge deck Chapters 10, 11, 12 and 13 describe the different types of bridge deck Chapters 14 and 15 are devoted to the methods of construction of bridge ... Bending moments, bending stresses and shear force 5.7 Centre of pressure 5.8 Calculation of the prestress force 5.9 Table of stresses 5.10 Non-zero stress limits 5.11 Compressive stress limits 5.12 ... effect of scale on the method of construction 16.1 General 16.2 A bridge length of 130 m on four spans 16.3 A bridge length of 130 m on three spans 16.4 The bridge is 500 m long 16.5 A series of...

Ngày tải lên: 18/02/2014, 18:20

... Micro-Mechanics of composite materials, “Nauka Dumka”, Kiev, 1985 G.A Vanin, Nguyen Dinh Duc, The theory of spherofibre composite. 1: The input relations, hypothesis and models, J Mechanics of composite ... V.P Tamuz, G.A Teterc, Strength of composite materials, Riga, “Zinatie”, 1980 Nguyen Dinh Duc, Dinh Khac Minh, Bending analysis of three-phase polymer composite plates reinforced by glass fibers ... [1] [2] [3] [4] S Timoshenko, S Krieger, Theory of Plates and Shells, Mc Graw-Hill Book Company, NY 1959 J.N Reddy, Mechanics of Laminated Composite Plates and Shells: Theory and Analysis, CRC Press,...

Ngày tải lên: 14/03/2014, 13:20

Ngày tải lên: 12/05/2014, 23:57

Ngày tải lên: 13/05/2014, 03:01

... by the owners and the designers based on the importance rank of the bridge The fundamental task for seismic design of a bridge structure is to ensure a bridge s capability of functioning at the ... second level of design consideration is to control the performance of a bridge under severe earthquakes that have only a small probability of occurring during the useful life of the bridge In the ... The first level of design concerns control of the performance of a bridge in earthquake events that have relatively small magnitude but may occur several times during the life of the bridge The second...

Ngày tải lên: 08/07/2014, 12:20

... values of Fu/Fy less than 0.25 are not permitted This expression is then converted into the allowable stress format of the Japanese bridge code, using a safety factor of 1.7 However, as allowable stresses ... parts of the bridge structure The origin of the R factor design procedure can be traced back to the ATC 3-06 document [9] for building design Since requirements in seismic provisions for member design ... I l = = ≈ = plate flexural rigidity bD bt b t3 b t3 (39.18) where Il is the moment of inertia of the T-section made up of a longitudinal stiffener and the effective width of the plate to which...

Ngày tải lên: 08/07/2014, 12:20

... frequency of bridge collapse of 0.0001 for critical bridges and an annual frequency of bridge collapse of 0.001 for regular bridges These annual frequencies correspond to return periods of bridge ... a side span of the massive bridge Most of the deaths occurred when a packed movie theater on the top deck of the passenger ship was sheared off by the low vertical clearance of the bridge superstructure ... out of vessel reach are preferable 60.2.2 Selection of Bridge Type, Configuration, and Layout The selection of the type and configuration of a bridge crossing should consider the characteristics of...

Ngày tải lên: 08/07/2014, 12:20

... Micro-Mechanics of composite materials, “Nauka Dumka”, Kiev, 1985 G.A Vanin, Nguyen Dinh Duc, The theory of spherofibre composite. 1: The input relations, hypothesis and models, J Mechanics of composite ... V.P Tamuz, G.A Teterc, Strength of composite materials, Riga, “Zinatie”, 1980 Nguyen Dinh Duc, Dinh Khac Minh, Bending analysis of three-phase polymer composite plates reinforced by glass fibers ... [1] [2] [3] [4] S Timoshenko, S Krieger, Theory of Plates and Shells, Mc Graw-Hill Book Company, NY 1959 J.N Reddy, Mechanics of Laminated Composite Plates and Shells: Theory and Analysis, CRC Press,...

Ngày tải lên: 21/07/2014, 16:21

... modulus of elasticity of concrete modulus of elasticity of concrete at transfer of stress modulus of elasticity of prestressing strand modulus of elasticity of steel flexural stiffness of compression ... strength of concrete at time of initial prestress concrete stress immediately after transfer at center of gravity of prestressing steel f& = concrete bearing stress under anchor plate of post-tensioning ... percent of basic allowable stress (Chapter 5) ratio of area of bars cut off to total area of bars at section ratio of long side to short side of concentrated load or reaction area ratio of maximum...

Ngày tải lên: 24/10/2014, 16:04

... used for final design of simple bridges and for preliminary design of complex bridges This approach is reasonably accurate for response of straight bridges without a high degree of stiffness or ... aspects of concrete design are considered in the ATC-32 Report These include design of ductile elements, design of non-ductile elements using a capacity design approach, and the detailing of reinforced ... the design codes They are: • “Seismic Design and Retrofit Manual for Highway Bridges,” FHWA-IP-87-6 • “Seismic Retrofitting Guidelines for Highway Bridges,” FHWA/RD-83/007 • “Seismic Design of...

Ngày tải lên: 24/10/2014, 22:00

... final composite plates 2.3 Tensile test samples of composite materials The tensile experimental test of composite materials includes the determination of the modulus of elasticity for composite ... effect of reinforcement powder and short fiber on the natural frequency of different boundary conditions plate with different aspect ratio of composite plate When, the dimensions of composite plate ... frequency of plate The modulus of elasticity of hyper composite plate was increased with the increase of short fiber volume fraction (∀ 𝑠𝑓 %) The yield stress decreased with the increase of powder...

Ngày tải lên: 09/09/2015, 10:06

... xy-direction of plate The solution of buckling load in equation (11) needed the general behavior of deflection plate as a faction of x and y So, to evaluate the deflection of plate as a faction of x ... composite plate with analysis the general equation of motion of composite plate with thermal buckling effect for simply supported plate, as, 2.1 Mechanical and thermal properties of orthotropic composite ... solution of critical buckling temperature of orthotropic unidirectional and woven composite plate with different aspect ratio of plate, volume fraction of reinforcement fiber and types of reinforcement...

Ngày tải lên: 09/09/2015, 10:17

... AND DESIGN OF STEELCONCRETE COMPOSITE BUILDINGS JEYARAJAN SELVARAJAH (B.Sc.Eng.(Hons),University of Moratuwa; M.Sc, NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ... deflection of the composite frame 74 Figure 4.1: (a) Force-displacement of axial spring (b) typical four-bolt fin plate connection 80 Figure 4.2: Component representation of composite fin plate ... Thickness of concrete flange of composite floor hp Overall depth of the metal deck fck Characteristic value of the cylinder compressive strength n Modular ratio Ic Second moment area of the composite...

Ngày tải lên: 09/09/2015, 11:25

... Mix design of FL7 .276 Table III.8 Mix design of FL8 .276 Table III.9 Mix design of FL9 .277 Table III.10 Mix design of FL10 277 Table III.11 Mix design of ... III.12 Mix design of FL12 278 Table III.13 Mix design of FL13 279 Table III.14 Mix design of FL14 279 Table III.15 Mix design of FL15 (The finalized design of FL) ... design of FL2 .273 Table III.3 Mix design of FL3 .274 Table III.4 Mix design of FL4 .274 Table III.5 Mix design of FL5 .275 Table III.6 Mix design of FL6...

Ngày tải lên: 12/09/2015, 11:35