Design of bridges excel sheets free download iamcivilengineer. Design of steel structures veer surendra sai university. Buckling due to shear 7 vertical buckling the compression flange alateral buckling btorsional buckling c vertical buckling 8 aisc maximum web htw stiffened girder for ah. The goal of this site is presently to help the undergraduates pursuing b. Calculates cumulative stresses at critical locations for loads applied to noncomposite and composite sections. When f approaches pyf at maximum moment region, the factor nearly becomes zero and hence the contribution of flanges to shear resistance will. Tech structure 1 a girder is a flexural member which is required to carry heavy loads on relatively long spans. For noncomposite plate girder the width of flange plate is chosen to be about 0. The general layout and dimensions of composite plate girder g2 are shown in figure 7. The steel girder design criteria are obtained from figures 31 through 33 shown below, from the concrete deck design example, and from the referenced articles and tables in the aashto lrfd bridge design specifications through 2002 interims. For curved girders, flange width no less than 25% of the web depth for straight girders, flange width no less than 20% of the web depth.
The solution to the shear buckling is much more complicated than in the previous cases of compressive buckling. Civil engineering to provide a passage over an obstacle like a water body, a valley, canal or a road structure is built across that obstacle to span a space and allow the easy movement of the concerned bodies over those obstacles, such a structure is named as bridge. Feb 18, 2018 the design of gantry girder is explained in this video step by step with full procedure. Spend time on studying, not for searching material to study. Rails, tyres,high tensile steel and hammers etc high carbon. Plate girder free download as powerpoint presentation. Damodar maity, department of civil engineering, iit guwahati. Work in buildings, iit madras and institute of steel development and growth. Design of steel structures pdf free download dss notes. Design considerations for steel plate girder bridges. Crane girder design crane girder details proper detailing is the key to good fatigue performance the vast majority of crane girder performance issues occur at the crane girder to column connection. Optimization of box type girder of overhead crane 6 from the top plate, the best optimized results maximum deflection37. Plate girders ii generally the thickness of flange plates is not varied along the spans for plate girders used in buildings. With the help of the overhead cranes, heavy equipment selection from design of steel structures book.
Saves the bridge description in this window and its tabs to memory and closes the window. Pdf design optimization of overhead eot crane box girder. Nptel provides elearning through online web and video courses various streams. Assisted by skilled workers in india, companies have been able to successfully grow towards the zenith, but. Damodar maity, department of civil engineering,iit guwahati. The general basis of plate girder design is discussed in a simplified way as a prelude to a more detailed presentation in lectures 8. A simply supported plate girder bridge of 20 metres span carries a dead load of 50 knm excluding selfweight of the girder and also a live load of 60 knm per girder. Mild steel used in rcc constructions as reinforcement and structural steel section used in steel building construction. Beam the term beam is a general term and means a horizontal member supported at its ends and subjected to loading perpendicular to its longitudinal axis. Explain briefly abut design step for a light gauge steel beam with laterally supported. Analysis and design of plate girder and box girder test. This book is aimed at training the students in using is. Modern plate girders are introduced by explaining typical usage, types and the reasons for their inherent slender proportions.
To extend the coverage of plate girder design previously given in lectures 8. Design of steel structures lecturer notes topic wise in pdf. Postbuckling and tension field action are introduced and the roles of the main components in a plate girder identified. Lrfd steel girder superstructure design example lrfd. The transverse loads cause internal shear forces and bending moments in the beams as shown in figure 1 below. Nptel video lectures, iit video lectures online, nptel. Stonein arch masonry, steel in girder or boxsection constructed in steel plates and standard sections, steel truss constructed of standard sections, reinforced concrete in arch or spanned forms, tensioned rc in various forms, precast mainly in boxsection girder. Transfer length and splitting force calculation for pretensioned concrete girders with highcapacity strands article. Mod1 lec1 introduction to design of steel structures.
The momentresisting capacities of plate girders lie somewhere between those of deep standard rolled wideflange shapes and those of trusses. Free civil engineering books download online civil. Introduction to statically indeterminate analysisindeterminate analysis s pport reactions and internalsupport reactions and internal forces of statically determinate structures can be determinedcan be determined using only the equations of equilibrium. Bhavikatti this new edition of an extremely popular textbook continues in its tradition of presenting design procedures using a simple language, neat sketches and abundant solved problems. So, last day up to the design of flange of the plate girder has been discussed. Environmental engineering ae aee handwritten ace academy. Design steps for plate girder design of steel structure ll duration. Do not use knee braces allow for adjustment in placing the crane girder. In india, industries usually have quality range of gantry girders for industrial sheds. After reading this article you will learn about the design of slab and girder bridges. Excel spreadsheets for various structural steel elements commonly encountered in a design office, viz. Four span simply supported steel plate girder input.
Similar to g1, the composite plate girder g2 had an overall length of 12,801 mm and a length between supports equal to 12,192 mm. Plate girder worked example 1 made by sssr date 150400 structural steel design project calculation sheet checked by pu date 250400 problem. Nptel, online courses and certification, learn for free. Dr akhtar naeem khan 5 plate girder plate girders are at their most impressive in modern bridge construction where main spans of well over 200m are feasible, with corresponding crosssection depths, haunched over. Learn for free, pay a small fee for exam and get a certificate. Design of bridges excel sheets free download category. Quimby, a beginners guide to the steel construction manual, 2008. The span is 36 m and carries two concentrated loads as shown in fig.
Jun 09, 2017 we have shared the detailed design of steel structures lecturer notes in topic wise pdf. The design criteria is to strengthen the girder to obtain a hs20 live load rating factor equal to or greater than 1. For these beams, readymade i sections are not suitable since selection from design of steel structures book. Design of steel structures notes pdf dss notes pdf file. Design of steel structures nptel online videos, courses iit video lectures. In r and r15,8units of r09 syllabus are combined into 5units in r and r15 syllabus. Slab and girder bridges are used when the economical span limit of solid slab bridges is exceeded. Categories building construction tags box girders, cover plates, deep plate girders, depth of plate girder, elements of plate girder, flange angle, flange plate, isection, plate girders, plate girders in bridges, shallow plate girders, structural steel components, web 1 comment post navigation. Hirol, isami, plate girder construction, isbn 9780554888026. Pdf optimization of box type girder of overhead crane. Beams of long span subjected to heavy loads are encountered in buildings and bridges. The general form of the solution is still given by eq.
Arif memon assistant professor civil engineering department, laxmi institute of technology, sarigam chartered engineer, amie be civil, m. The girder is to be strengthened due to section loss from corrosion. The first task, analysis and design of horizontally curved plate girder and box girder test assemblies, is complete. Design the plate girder at the centre of the span considering the impact allowance as per irc code. Truss bridges compete against plate girders for shorter spans, against. That is computation of shear force and bending moment. However, the analysis of statically indeterminate structures requires. The design may be based on any one of the following assumptions. Additionally, the weld design for the webtoflange joint of the plate girders is demonstrated along with. For this steel girder design example, a plate girder will be designed for an hl93 live load. Plate girder modern plate girders are normally fabricated by welding together two flanges and a web plate. It is more helpful to revise the basics in quick manner. Design of plate girder comparing bs5950 with ec3 part 15 in plate girder design design of plate girder bs5950 most design rules found in sections 4.
Now, as we know the udl load is 80 kilo newton per meter. The design examples provide coverage of all applicable limit states whether or not a. Sep 06, 2014 the book that i am going to share with you today is bridge engineering by j. Plate,girders can often be loaded beyond the web buckling load predioted by the classical plate buck11n theoryo this is due to the fact that the web plate is framed by flanges and transverse stiffeners which allow for a redistribution of stresso since a plate girder web is usually subjected to bending, shear or a combination of the two, the. Design of steel structures nptel online videos, courses. Design of industrial steel building by limit state method. Civil engineering design of steel structures ii nptel. Stuchndarnubmoxamdqajntmt theoryofetnadjatfibution. Design of steel structures nptel online videos, courses iit. Again plate girder means 2 type of plate girders are there 1 is riveted plate girder riveted joint plate girder and another is welded welded plate girder. Column bases, roof trusses, plate and gantry girders. Design to ec3 part 15 nanyang technological university. This website offers tips gained from the experience of developing reusable technical spreadsheets by practicing bridge engineers. Plate girder lattice girder railway bridges, and bearings.
They may be manually operated or electrically operated overhead travelling crane. This example is based on aashto lrfd bridge design specifications, 7th edition. We have shared the detailed design of steel structures lecturer notes in topic wise pdf. Plate girder parametric study with variations in loading and span. Additionally, the weld design for the webtoflange joint of the plate girders is demonstrated along with all applicable components of the stiffener design and cross frame member design. So, we have to design the beam member in such a way that such type of means the bending moment and shear force are taken care by the section appropriately. Pdf plate girder parametric study with variations in. Composite beams and columns, beam columns, simple beam to column connections, column base plates. Extend bearing stiffeners the full height of the girder.
Environmental engineering ae aee handwritten ace academy notes. Calculates noncomposite and composite for modular ratios n and 3n section properties for steel igirders with concrete deck. For simply supported spans, this limit is generally found to be nearly 10 metres and for continuous or balanced cantilever type structures, this limit is 20 to. A girder may be of longer spans, take greater load. Lecture series on design of steel structures by dr. These notes are according to the r09 syllabus book of jntu. This book is considered as pioneers among the books on bridge engineering. You can find most of the materialsnotes related to civil engineering. But before watching this part, please watch the 1st part of gantry girder for better understanding. For these beams, readymade i sections are not suitable since their depth is limited due to buckling of the web.
Beams and compound beams, tension members, compression members, members subjected to axial force and bending moments, crane girder, welded plate girder, purlin and sheeting rails with and without sag rods. Then design of web plate and then design of flange. Steel structures ace academy gate ies notes free download pdf for civil engineering gate, ies and government exams handwritten notes download. Design of roof truss notes click to download design of stiffners notes click to download design of plate girders notes click to download design of gantry girders click to. Seshu adluri plate girders recall compression field action in reinforced concrete beams compression struts develop because of the presence of stirrups plate girder tension field action develops because of the placement of vertical and horizontal stiffeners. Stone masonry tools, drills, punches etc as carbon content increases, yield strength, ultimate tensile strength and hardness of steel increases. The following note discusses the standard formula for the shear flow between web and flanges of a doubly symmetric beam which is used for weld design and gives the background to the formula in eurocode 3 part 51. E1 is fully restrained against lateral buckling throughout its span. Bhavikatti this new edition of an extremely popular textbook continues in its tradition of presenting design procedures using a simple. Design optimization of overhead eot crane box girder using finite element method. Complete design of steel structures pdf free download. To include the design of transverse web stiffeners and end posts and consideration of patch loading.
In this situation, girders are to be fabricated using flange and web plates as per requirement. Steel structures ace academy gate ies notes free download pdf. Laterally supported and unsupported beams, builtup beams, plate girders. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses.
Overhead traveling cranes are used in industrial buildings to lift and transport heavy jobs, machines, and so on, from one place to another. When the resultant acts away from the shear centre axis, then the beam will not only bend but also twist. Structural steel 1 of 18 rev plate girder design project. In this situation, girders are to be fabricated using flange and web plates. Plate girders ii 7 4 2 2 pf t pyf b m however in presence of overall bending moment, the contribution of flange to shear resistance will be reduced by the longitudinal stress f induced because of overall bending moment, by the factor 1 fpyf. All aspects of the girder design are presented, including evaluation of the following. Jul 03, 2014 design of bridges excel sheets free download category. Buckling of the compression flange due to inadequate stiffness of the web 3. Key words steel bridge, steel i girder, aashto lrfd, moment redistribution, cross frame design 18. Apr 26, 2017 steel plate girder design free pdf ebooks. Crane girder design 5 crane column cap plates allow girder end rotation avoid thick cap plates place the bolts outside of the column flanges. Get videos on important topics and concepts of civil engineering to understand in the best and simplest method with student friendly expl.
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