Concise beam design of precast concrete beams software. Shear behavior of prestressed concrete ubeam end blocks. The texas ubeam standard designs were released in the 1990s and have been used increasingly in bridges across the state since. Analysis of prestressed concrete bridges prestressed. Camber prediction at release, erection and final, with and without. Bridgelink offers a wide variety of bridge engineering software applications. Comparison of precast prestressed bridge girder design. A new precast, prestressed concrete beam was recently developed by the texas department of transportation. Eriksson beam allows the engineer to quickly analyze and design precast prestressed concrete beams in accordance with aci 318. It is substantially prestressed during production, in a manner that strengthens it against tensile forces which will exist when in service 35 this compression is produced by the tensioning of highstrength tendons located within or adjacent to the concrete and is done to improve the performance of the concrete in. Ex one span prestressed concrete by using sap2000 v17.
Posttensioned and reinforced concrete slab and beam. The software provides a step by step guide for the engineer from element geometry definitions, prestress strand optimization, eurocode design checks and documentation reports. Pdf design procedure for prestressed concrete beams. Prestressed concrete is adaptable to a wide variety of structural systems. Prestressing involves inducing compressive stresses in the zone which will tend to become tensile under external loads. May 07, 2020 concise beam version 4 is now available. Eriksson beam precastprestressed concrete beam design. Ce 437537, spring 2011 pretensioned beam example 1 15 pretensioned beams are typically manufactured by a vendor in a prestressing yard. On the 1st of october, well give you some valuable information about precast concrete design that is topical for architects, engineers, and others on the construction team. Aashtoware aashtos cooperative computer software development program.
Its the tool of choice for professional engineers who demand results. Highest standards undertaking every aspect of the process design. Our software is currently used by most of the larger precast prestressed concrete institute pci producer members and many precast engineering consultants. Compare pgsuper with other precast girder design programs. Posttensioning and prestressed design and software expertise. Txdot prestressed concrete beam designanalysis pstrs14. Builtin torsion analysis follows aci or pci procedures. Comprehensive design example for prestressed concrete psc girder superstructure bridge with commentary.
The bearing pad is oriented along the centerline of bearing. Precast prestressed u beam bridge aun structural op 23 jan 02 10. Concise beam is an easy to use program for the design of precast concrete beams. Two ubeam bridge projects are currently under contract, with production of the ubeams due to begin in the fall of 1993. It is estimated that in 1985, over 2 million spreadsheet.
Pstrs14txdot prestressed concrete beam designanalysis program. Smaller section sizes since psc uses the whole concrete section, the second moment of area is bigger and so the section is stiffer. Bridge design prestressed concrete bridge beam design. Concrete properties, deflection history, effective prestress, girder properties. In order to achieve these objectives, an experimental program was conducted. Lecture 24 page 2 of 12 pretensioned prestressed concrete. Structures design office programs library files and links. The allowable compression stress limit for pretensioned concrete components is calculated according to s5. Design and detailing of prestressed concrete beams and slabs. How does a prestressed precast concrete bridge beam work. Heuristic optimization is used to search for the best geometry, the concrete type, the. Prestressed concrete u beam design guide bearing pad taper calculations for u beams the bearing seat for a u beam is level perpendicular to the centerline of bearing but slopes along the centerline of bearing between the left and right bearing seat elevations. Both methods involve tensioning cables inside a concrete beam and then anchoring the stressed cables to the concrete.
Used with fdot standard index 634001, 641010 and 649010 formerly index 17727, 17725 and 17723 for the design and analysis of traffic signal supports consisting of dual cables connected to steel or concrete strain poles in accordance with the 5th ed. These include pretensioned and posttensioned structures, both castinplace and precast, and other prestressed elements in conjunction with normally reinforced concrete. Design of beam and slab sections for flexure, shear and torsion. Its workings is similar to that of continuous beam slab design, but it adds additional design features such as complex sections such as bridge decks, and userspecified load combinations as.
Prestressed precast igirder design spreadsheet download. Losch engineering corporation wall and prestressed beam design software the mechanical engineering zone java apps for beam analysis and more free. To use the software staad pro for the analysis and design of prestressed concrete girders. Txdot prestressed concrete beam design analysis pstrs14 page 4 of 11 general support information this document will be updated as needed to provide current support information. Jan 23, 20 with over 40 years experience, shay murtagh precast are industry leaders in the field of precast concrete solutions. National academies of sciences, engineering, and medicine. Software canadian precast prestressed concrete institute. How does a prestressed precast concrete bridge beam. Prestressed concrete is a form of concrete used in construction. We specialize in analysis and design software for precast prestressed concrete in both the transportation and commercial markets. Posttensioned and reinforced concrete slab and beam design.
Eriksson software precastprestressed concrete design. Aesthetics and economy were primary design considerations for this opentop trapezoidal beam. We specialize in analysis and design software for precastprestressed concrete in both the transportation and commercial markets. A pretensioned prestressed concrete member is cast in a preformed casting. Design of prestressed concrete beams is based upon two distinct concepts which lead to two design methods known as service load design or working stress design, and ultimate design. The automated designer determines the prestressing, concrete strength, lifting.
No software is needed for the majority of deck slabs. Its workings is similar to that of continuous beamslab design, but it adds additional design features such as complex sections such as bridge decks, and userspecified. Calculate the loss of prestress due to elastic shortening, creep and shrinkage of the concrete and relaxation of the prestressing strands. There are also others free but may require a platform such excel or mathcad, and of course paid software. Prestres is a prestressed concrete beam design and analysis program for simply supported beams. Concise beam will perform a load analysis and design checks in accordance with the latest edition of aci 318, csa a23. 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.
Structural design of precastprestressed concrete ubeam road. Rfem with two addon modules rftendon and rftendon design fulfils these requirements and allows engineers to carry out the complete design of prestressed beams, frames, plates, buildings and bridges. Required concrete strength and moment capacity were computed and compared to those provided. Since concrete is weak in tension in normal reinforced concrete construction cracks develop in the tension zone at working loads and therefore all concrete in tension is ignored in design. This manual is not intended to replace the necessity of a profession engineered design. Smaller deflections the larger second moment of area greatly reduces. Txdot prestressed concrete beam design analysis pstrs14. T beams for buildings from load tables provided by the vendor. Our software is currently used by most of the larger precastprestressed concrete institute pci producer members and many precast engineering consultants. The bureau has redesigned the lxalxd, ishapes to create an ad beam series that meets the aashto lrfd specifications, and the series has been updated to the fourth edition.
Txdot prestressed concrete beam designanalysis pstrs14 page 4 of 11 general support information this document will be updated as needed to provide current support information. Mar 01, 2016 ex one span prestressed concrete by using sap2000 v17. Used with fdot standard plan index 450010 to 450299 formerly index 20010 to 20299 to design simple span prestressed beams floridai, aashto, florida bulbt, florida u, florida doublet, flat slab, invertedt, fsb in accordance with the aashto lrfd bridge design specification. Comparison of precast prestressed bridge girder design software.
Also included are sections that require a principal axis analysis, such as stadium risers. On the 1st of october, well give you some valuable information about precast concrete design that is topical for architects, engineers, and others on the construction. Prestressed concrete design using spreadsheets m any practicing engineers are unaware of the potential offered by todays electronic spreadsheets. Pstrs12, prestressed beam analysis was a prestressed concrete beam analysis program used to check optional beam designs when given the end and centerline strand patterns and other design parameters.
More complicated design typical precast prestressed concrete members. Properties of txdot standard igirders txgirders, u beams, slab beams, decked. To formulate the entire problem for a couple of span under the loading mentioned above to obtain shear force and bending moment at regular intervals along the beam. Therefore, it is important that the software for prestressed concrete design is structured and the navigation is possible in the program. All types of horizontal precast members can be designed, including double tees, inverted tees, spandrels and hollow core slabs. Eriksson software is an engineering software development firm located in tampa, florida. Eriksson software precastprestressed concrete design and.
Prestressed concrete design in rfem dlubal software. Comprehensive design example for prestressed concrete psc. Extending span ranges of precast prestressed concrete girders. Key code parameters can be customized to simulate other design codes. The purpose of this study is to develop a method by which a prestressed concrete beam can be proportioned by the provisions of ultimate design. Ce 437537, spring 2011 pretensioned beam example 3 15 2. Bridge design guide the texas department of transportation ftp. Structural engineers select appropriate beams for example hollow.
Pretensioned concrete is almost always done in a precast plant. These include pretensioned and posttensioned structures, both castinplace and precast, and other prestressed elements in. The program has been tailored for highway bridge girders. Alp2000 design tool for reinforced and prestressed concrete bridges. In service load design the stresses in the beam are calculated on the basis of the. Specialist software for the analysis of prestressed concrete bridges many firms have developed their own specialist inhouse software over the years to deal with analysing prestress effects, but frequently these only cater for some of the effects, and the designer is left to combine the results from other parts of the design process. Design and software expertise in posttensioning and prestressed concrete for over 30 years, adapt corporation has provided a full range of software products and engineering services for the modeling, analysis and design of prestressed pre or posttensioned concrete structures. Precast prestressed u beam bridge structural engineering. Highest standards undertaking every aspect of the process. Appendix b, pretensioned concrete u beam design guide. Stage 1 tendons and reinforcement are positioned in the beam mould. Posttensioning and prestressed design and software.
Structural design of precastprestressed concrete ubeam. Prestressed beams are ideal for industrial applications and multistory residential projects including dormitories, hotelsmotels, apartments, and more. The spreadsheet application presented is ideally suited to making preliminary design decisions quickly and efficiently, leading to better and more cost effective prestressed concrete designs. An automated procedure for optimizing the design of precast prestressed concrete u beam road bridges is presented.
Rectangular and circular columns, and also columns with any general shape. Prestressed concrete applications the engineering community. Txdot engineering software support information txdot. Its workings is similar to that of continuous beam slab design, but it adds additional design features such as complex sections such as bridge decks, and userspecified load.
Girder analysis and design is performed using the computer. Software titles include the lecwall precast prestressed wall and column design program, first released in 1994, and the lecpres prestressed beam design program, released in 1997. The american association of state highway and transportation officials aashto and the prestressed concrete institute pci standard. The schematic layout of pc beam and prestressing reinforcement forces of half beam is shown. Prestressed concrete proposed manual changes continued transformed section properties no longer allowed under any circumstance prestressed beam details remove standard sections and details and move to indot t d d d iindot standard drawings add additional sections for ubeams. Prestressed concrete beams concrete beams mn molin. The programs name, captain, is an acronym for c omputer a ided p ost t ensioning a nalysis in strument.
Posttensioned and reinforced concrete slab and beam design software adaptptrc product overview since 1981, adapt softwares proven reliability and easeofuse have made it the most widely used software for the design of posttensioned slabs and beams worldwide. The superstructure design includes the following elements. The economic cost and the embodied energy are selected as the objective functions based on production materials, transport and placement. Design a simply supported prestressed concrete y beam which carries a 150mm thick concrete slab and 100mm of surfacing, together with a nominal live load udl of 10. Adaptabi design software for segmentally constructed bridges including cablestayed. An automated procedure for optimizing the design of precastprestressed concrete ubeam road bridges is presented. The programs name, captain, is an acronym for c omputer a ided p ostt ensioning analysis in strument.
Users are encouraged to check for updates to this file. Psbeam is a highperformance windowsbased program for the design and analysis of simplespan or continuous precast, pretensioned or posttensioned precast concrete bridge girders. This easytouse software models simple and continuous span structures and designs in. Civilax is the knowledge base covering all disciplines in civil engineering. Posttensioned and reinforced concrete slab and beam design software adaptptrc product overview since 1981, adapt software s proven reliability and easeofuse have made it the most widely used software for the design of posttensioned slabs and beams worldwide. Molin prestressed beams are poured in a 24inchwide stressing form, and are typically 24.
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