allowable stress design of curved stringer bridge
Tài liệu The Design of Prestressed Concrete Bridges ppt
Ngày tải lên :
18/02/2014, 18:20
... 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...
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Seismic Design of Reinforced Concrete Bridges docx
Ngày tải lên :
08/07/2014, 12:20
... 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...
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analysis and design of reinforced concrete bridge structures
Ngày tải lên :
24/10/2014, 16:04
... 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 ... 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 ... effective stress in prestressing steel, after losses extreme fiber tensile stress in concrete at service loads specified yield stress, or design yield stress of fy = nonprestressed reinforcement = design...
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Seismic Design of Steel Bridges pot
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 ... inside the section Design provisions for a stiffened box column are not covered in either the AASHTO or AISC design specifications But the design and construction of this type of bridge pier has ... 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...
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Vessel Collision Design of Bridges pot
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...
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seismic analysis and design of concrete bridge systems
Ngày tải lên :
24/10/2014, 22:00
... 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 ... possibility b) Modeling of curved bridges Curved bridges must also consider rotational tendencies due to the orthogonal components of the loading For curved bridges and some directions of loading, the ... 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...
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behavior and design of open steel box girder bridges by up-down construction method
Ngày tải lên :
13/11/2014, 06:40
... middle bottom flange 133 6.32 Design of two-span continuous bridge a) Conventional design T1; b) Design T2; c) Proposed bridge design T3 136 6.33 Design of closed-rectangular brdige by up-down ... Equivalent stress at midpoint of top flange 45 3.14 Equivalent stress at midpoint of bottom flange 45 3.15 Longitudinal stress of top flange at midpoint 46 3.16 Longitudinal stress of bottom ... Longitudinal stress of top concrete slab at midpoint 48 3.18 Longitudinal stress of top concrete slab at midpoint 48 3.19 Transverse stress of top slab across the width 49 3.20 Transverse stress of...
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SAP2000® Linear and Nonlinear Static and Dynamic Analysis and Design of Three-Dimensional Structures
Ngày tải lên :
06/09/2012, 15:56
... Click the Design menu > Steel Frame Design > Start Design/ Check of Structure command or the Start Steel Design/ Check of Structure button, to start the steel frame design process The program designs ... Click the Design menu > Steel Frame Design > Start Design/ Check of Structure command or the Start Steel Design/ Check of Structure process button, to start the steel frame design G When the design ... body of the form lists the design stress ratios obtained at various stations along the frame object for each design load combination Note that the program automatically created code-specific design...
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SAP2000 Integrated Finite Elements Analysis and Design of Structures
Ngày tải lên :
06/09/2012, 15:56
... title of the window reads YZ Plane @ X=24 This same title also occurs on the left-hand side of the status bar at the bottom of the SAP2000 window Click the roof level beam on the left side of the ... enter Select Mode 24 Click the roof beam at the top of the braced frame to select it Also click the joint at the top of the chevron brace (center of braced frame roof beam) to select it 25 From ... side of the point where you clicked SAP2000 Web Tutorial 18 Thus click the ten locations designated by an O in Figure C-9 to draw some of the roof level beams Figure C-9: Quick Drawing Roof Level...
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The design of mat foundations
Ngày tải lên :
16/10/2012, 10:43
... being designed for a small office building with a total live load of 250 kips and dead load of 500 kips Find: (a) the depth Df for a fully compensated foundation, (b) the depth Df if a soft clay ... in some areas of the central and western United States Photograph of the construction of the mat foundation for the new Century Hotel in San Francisco (1999) Having had 25 feet of dredge spoils ... Details of a mat foundation, serving as the slab of a one-story basement Compensated mat foundations If zero settlement is desired, the excavated soil weight will be equal to the weight of the...
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DESIGN OF REINFORCED MASONRY STRUCTURES
Ngày tải lên :
17/08/2013, 11:41
... and allowable stress design (ASD) philosophies Reinforced masonry structures can be designed based on either strength design philosophy or allowable stress design philosophy Allowable stress design ... from the start of the hook (point of tangency), in (mm) = clear span of prestressed member in the direction of prestressing tendon, in (mm) = length of the entire wall or of segment of wall considered ... enable readers to quickly grasp the fundamentals of strength design of reinforced masonry, neither that knowledge nor that of allowable stress design of masonry are considered prerequisites for understanding...
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Novel design of a compacted micro-structured air-breathing PEM fuel cell as a power source for mobile phones
Ngày tải lên :
05/09/2013, 14:58
... micro-fuel cells in terms of design, materials, effective transport of reactants, and heat management The development of physically representative models that allow reliable simulation of the processes ... for the design and optimization of future fuel cells to improve their lifetime with a much higher power density and lower cost The analysis offers valuable physical insight towards design of a cell ... performance and design of air-breathing PEM fuel cells Litster and Djilali [1] developed a single-phase one-dimensional semi-analytical model of the membrane electrode assembly (MEA) of planar air-breathing...
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Optimal design of PEM fuel cells to generate maximum power: A CFD study
Ngày tải lên :
05/09/2013, 14:58
... reflects the influence of the operating parameters on fuel cell performance to investigate the in situ total displacement and degree of the deformation of the polymer membrane of PEM fuel cells The ... operation, hygro-thermal stresses and deformation are introduced The non-uniform distribution of stress, caused by the temperature gradient in the MEA, induces localized bending stresses, which can ... the Mises stresses in membrane will be increased The activation overpotential decreases with increasing of cell operating temperature This is because of the exchange current density of the oxygen...
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Novel design of a disk-shaped compacted micro-structured air-breathing PEM fuel cell
Ngày tải lên :
05/09/2013, 14:58
... micro-fuel cells in terms of design, materials, effective transport of reactants, and heat management The development of physically representative models that allow reliable simulation of the processes ... for the design and optimization of future fuel cells to improve their lifetime with a much higher power density and lower cost The analysis offers valuable physical insight towards design of a cell ... performance and design of air-breathing PEM fuel cells Litster and Djilali [1] developed a single-phase one-dimensional semi-analytical model of the membrane electrode assembly (MEA) of planar air-breathing...
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Theory and design of CNC systems (Học CNC)
Ngày tải lên :
08/09/2013, 20:50
... 10.3 Design of Soft-NC System 10.3.1 Design of Task Module 10.3.2 Design of the System Kernel ... composed of two parts with a total of 11 chapters: Part I is composed of Chapters 1–6 on the principle and design of CNC, and Part II is composed of an open-architectural soft CNC system Specifically, ... invented the method of automatic control of the weaving of fabrics with a loom machine by using punch cards and this method was the beginning of the concept of NC The concept of NC was actually...
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Theory and Design of Electrical and Electronic Circuits
Ngày tải lên :
23/10/2013, 16:15
... Equivalent circuit of a inductor Measurement of the characteristics Transformer of alimentation Design Transformer of audiofrecuency Transformer of pulses Design Inductors of filter with continuous ... voltage of PINCH-OFF or "strangulation of the channel" defined in the curves of exit of the transistor, whose module agrees numerically with the voltage of cut in the curves of input of the transistor ... inductance of reflected dispersion of the secondary resistance of the copper of the wire of the primary resistance of the copper of the wire of the secondary resistance of losses for Foucault and hysteresis...
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Electronics - Theory and Design of Electrical and Electronic Circuits
Ngày tải lên :
27/10/2013, 16:15
... Equivalent circuit of a inductor Measurement of the characteristics Transformer of alimentation Design Transformer of audiofrecuency Transformer of pulses Design Inductors of filter with continuous ... voltage of PINCH-OFF or "strangulation of the channel" defined in the curves of exit of the transistor, whose module agrees numerically with the voltage of cut in the curves of input of the transistor ... inductance of reflected dispersion of the secondary resistance of the copper of the wire of the primary resistance of the copper of the wire of the secondary resistance of losses for Foucault and hysteresis...
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