Additionally, the virtisopis file used for rating the bridge is to be sent to the nmdot bridge design bureau. Pdf when tension flanges of longitudinal girders are connected together. Pci bridge manual appendix b, aashtopci standard products. Design guidelines for bridge widenings, steelreinforced elastomeric bearings fo r pretensioned concrete beams, stru tandtie method, and culverts.
Wisdot bridge manual chapter 19 prestressed concrete. The centerline of the bridge lies on a 400 ft radius and the crosssection is a two cell box. Additionally, tip boxes are used throughout the design example computations to present useful information, common practices, and rules of thumb for the bridge designer. Feedback direct any questions or comments on the content of the manual to the director of the bridge division, texas department of transportation. Over two hundred200 pages of manual design calculation for a box girder bridge. Four span simply supported steel plate girder input.
A beginners guide to simple plate girder design to ec3 part 15. Guidelines for design and construction of decked precast, prestressed concrete girder bridges final report prepared for national cooperative highway research program transportation research board national research council r. Introduction box girders have become a prominent element in the con. Based on observations made during construction, and on measurements taken of concrete strains, tendon strains, temperature distributions, and slopes, a series of detailed design, construction, and inspectionrelated recommendations are made. Box girder bridges are commonly used for highway flyovers and. It consists of lifting devices and a supporting structure for lifting precast beams and precast bridge segments in. It is assumed the bridge will be cast on falsework. The paper considers the problem of design optimization of the box section of the single girder bridge crane. The superstructure design includes the following elements. Design examples are presented in appendices to this manual. It will also provide design aids and other sources of information along with cross references to other parts of this manual to assist in the design and preparation of plans.
Learning objectives basic procedure of designing segmental bridges manual method of modeling modeling using wizard checking results and design report. Posttensioned psc box girder bridge using fcm as per. Slab and girder bridges are used when the economical span limit of solid slab bridges is exceeded. Deck design follows the nmdot standard deck slab detail in chapter 4 of the nmdot bridge procedures and design guide, hereinafter referred to as design guide. For this steel girder design example, a plate girder will be designed for an hl93 live load. Pdf construction of precast segmental box girder bridge.
Prestressed box girders and general prestressed concrete guidelines are also included in this chapter. Solid slab bridge design boxgirder bridge design 9. The behavior of box girder section for a general case of an eccentric load has. Fabrication and erection of precast concrete segmental. Analysis and design of prestressed box girder bridge by irc. The grandmere bridge, a 285 m 935 ft long castinplace segmental box girder bridge, experienced some distress which required strengthening by adding external prestressing equivalent to 30% of. Lrfd 3rd edition threespan continuous straight igirder 1.
A launching girder is in general a designandbuilt machine used in precast posttensioned bridge construction. Pdf study on the behavior of box girder bridge researchgate. Elremaily construction technology laboratories, inc. T or igirder bridges are the most common example under this and width of the rib in the case of t, i and l beams design of reinforcement in box girder bridge concrete tbeam bridge design free download as pdf file. Wisdot bridge manual chapter 19 prestressed concrete january 2020 193 19. An image of a model taken from the sap2000 bridge examples document is shown in figure 1. Siteblauvelt engineers cranberry township, pa pittsburgh, pa b s d i design. Tech structural engineering, mandava institute of engineering and technology, andhra pradesh s. Various studies have been performed so as to develop a more stable structure design by varying the shape of the bridge structure. Policy on lrfd design of specific bridge substructure components. After reading this article you will learn about the design of slab and girder bridges.
Structural design of steel igirder, steel, and ps boxgirder bridges is the main thrust of this chapter. 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. Attached is a model file and a pdf which outlines the procedure for modeling a concrete boxgirder bridge, a steelgirder bridge, and a cablestayed bridge. Structural steel design, fabrication, and construction jamie f. Threespan continuous straight composite i girder load and resistance factor design third edition customary u. Steel bridge tutorials computers and structures, inc. For simply supported spans, this limit is generally found to be nearly 10 metres and for continuous or balanced cantilever type. Progressive erection applied to box girder with strutted wing slab koji osada1, taketo kanamoto 1, kimito saito2, takahiro arai 2 1 introduction the uchimaki viaduct is a multispan continuous box girder bridge with strutted wing slabs photo 11. Creating a new bridge file to create a new bridge right click on the folder where you want to save the bridge and choose new new bridge. A box girder bridge also known as a box section bridge is a bridge in which the main beams comprise girders in the shape of a hollow box. Pci has developed preliminary design charts in accordance with the.
Design to ec3 part 15 nanyang technological university. Policy on lrfd design of specific bridge superstructure components. Pdf precast segmental box girder bridge manual serhat. This horizontally curved steel box girder br idge design example was originally developed in the nchrp 1238 project using the 1993 aashto gu ide specifications for horizontally curved steel girder bridges. Guidelines on safe use of lifting frames and launching. Bridge design to eurocodes worked examples worked examples presented at the workshop bridge design to eurocodes, vienna, 46 october 2010 support to the implementation, harmonization and further development of the eurocodes y. Bo x girder bridges are being made into use at many places. Lrfd design example for steel girder superstructure bridge.
Box girders are usually considered for footbridges only for spans over about 30m, and most box girder footbridges adopt an allsteel configuration. 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. Ultrahigh performance fiber reinforced concrete elements pdf. Included as a bonus is a full detailed bill of quantities for the bridge. Analysis and design of prestressed box girder bridge by. Analysis and design of prestressed concrete box girder bridge. In present study a two lane simply supported box girder bridge made up of prestressed concrete which. Design guidelines for steel trapezoidal box girder systems 6. Structural steel design, fabrication, and construction. New window will appear, fill the data as shown below. Predict the behavior of girder system once bridge is fully constructed. This document consists of a comprehensive steel girder bridge design example, with instructional commentary based on. Girder analysis and design is performed using the computer.
The transverse section and profile views of the sample bridge follow. Launching girder launching girder is also known as launching gantry. A sample input file and selected excerpts from the corresponding output file are included in this. Pci bridge design manual appendix b aashtopci standard products aashto box beams oct 97 dimensions inches type w h bi36 36 27 bi48 48 27 bii36 36 33 bii48 48 33 biii36 36 39 biii48 48 39 biv36 36 42 biv48 48 42 properties type area in. Lrfd steel girder superstructure design example lrfd. The virtisopis rating shall be shown on the bridge plans.
Progressive erection applied to box girder with strutted. Comparing bs5950 with ec3 part 15 in plate girder design design of plate girder bs5950 most design rules found in sections 4. Steel tub girder, steel box girder, lateral bracing. Section 1 limit states section 2 loads bridge design manual lrfd 21 txdot 102015. It is erected progressively by assembling divided parts of the cross section. Numbering of tables and figures tables and figures shall be numbered using the chapter, section, subsection in which they are located, and then a hyphen followed by consecutive numbers. Design step 2 example bridge prestressed concrete bridge design example 8 reinforced concrete deck 110 18 14 5 spa at 9 8 9 55 4 12 total width 52 roadway width figure 22 bridge crosssection 2. Measured behavior of a curved precast segmental concrete. Posttensioned box girder bridge an analysis approach. Bridge design manual lrfd 14 txdot 102015 chapter 2 limit states and loads contents.
Design of bridges excel sheets free download category. Class 5000 or higher used in cip posttensioned concrete box girder construction, deep bridge foundations, or in other special structural applications if significant economy can be gained or structural requirements. It provides advice, for those already acquainted with the design of composite ibeam bridges, on the particular aspects of box girders bridge design and the use of bs 5400. Plan, elevation and section views are shown on the following pages. Each bridge is an 11span, continuous unit consisting of 244 constant depth precast concrete box girder segments. Design guidelines for steel trapezoidal box girder systems. Pdf this research study analyzes the several positions in a box girder bridge. Wisconsin department of transportation bridge manual.
T or igirder bridges are the most common example under this category and are very popular because of. The box is typically rectangular or trapezoidal in crosssection. Prestressed concrete psc girder superstructure bridge design example us units pdf version 1. The advantage in using an allsteel configuration is that the whole cross section, including parapets, can be fabricated at the works for delivery and erection in complete spans. The box girder normally comprises either prestressed concrete, structural steel, or a composite of steel and reinforced concrete. Reduction of the girder mass is set as the objective function. Introduction in 1993, the american association of state highway and transportation officials aashto adopted the load and resistance factor design lrfd specifications for bridge design. Click on a datetime to view the file as it appeared at that time. Posttensioned psc box girder bridge using fcm as per eurocode february 2018. The example problem is a three span continuous box girder bridge that is 700 ft. Concrete structures chapter 5 wsdot bridge design manual m 2350. The behavior of box girder section for a general case of an eccentric load has been s tudied and presented its studies in chapter 2.
315 1387 644 1184 1255 968 327 1283 749 601 964 1428 753 1431 66 870 770 1269 1509 763 737 903 409 1480 1386 1003 1477 1176 339 1352 482 710