The extradosed bridge type was identified for the st. The influence of geometrical parameters, such as the height of the towers, girder depth and the size of piers in the structural behavior and in the design and construction of an extradosed bridge were also analysed. Conclusion the kachhidargah extradosed bridge would be longest extradosed bridge in the world once construction is completed having total length of 9. An extradosed bridge employs a structure that combines the main elements of both a prestressed box girder bridge and a cablestayed bridge. It was a nice experience for students in terms of learning the construction project management. Design and construction of cablestayed bridges in the. On the bridge todd strasser i beat the crap out of this guy at the mall yesterday, adam lockwood said. An extradosed bridge consists of short towers with cables connecting the towers to the bridge deck. Clarity is paramount when determining the structurelayout of your dissertation.
It is the first extradosed bridge to be built in gujarat and the longest in the country as it is having deck span of 144 m and deck width is 20. In order to solve structural optimization problems in the past, it is necessary to integrate structure analysis software and optimization software. Pdf study on extradosed bridge and its structural behavior. This is a great way to email a collection of imagesto a client as a single attachment. Since structural analysis has been the only function considered when developing most of structure analysis software, they suffer from closeness of system.
A study of 51 extradosed bridges shows the variability in proportions and use of extradosed bridges, and compares their material quantities and. To satisfy all demanded code requests, still more and more precise transformation models are demanded. Deep well foundation up to 67 m deep across the river ganga in varanasi and upto 68 m deep across the river brahmaputra at jogighopa were used. Presentation overview project background extradosed structure 101 schedule. An extradosed bridge employs a structure that combines the main elements of both a prestressed box girder bridge and a cablestayed bridge 85 the name comes from the word extrados, the exterior or upper curve of an arch, and refers to how the stay cables on an extradosed bridge are not considered as such in the design, but are instead treated as external prestressing tendons deviating.
An extradosed bridge employs a structure that is frequently described as a cross between a girder bridge and a cablestayed bridge. Innerbelt bridge subcommittee meeting 4 meeting minutes. Design and construction of the deh cho bridge challenges. In the paper, the rather sophisticated bridge superstructure is considered. Marion street pedestrian bridge 30% preliminary design august 2nd, 2018 city of seattle. A new output workspace has been introduced to generate pdf contact sheet natively in bridge. The purpose of this thesis is to provide insight into how different geometric parameters such as tower height, girder depth, and pier dimensions influence the structural behaviour, cost, and feasibility of an extradosed bridge. Third karnaphuli bridge is the first major extradosed bridge in bangladesh crossing karnaphuli river, used as a reference structure for analysis of structural behavior. Extradosed bridges relatively new bridge form 1988 france.
Pdf extradosed bridges in polanddesign and construction. The bridge had an overall length of 5,580m comprising nine modules of extradosed structures two modules of 360m and seven modules of 720m with 180m spans, a. For help documentation, see create a pdf contact sheet in output workspace. Innerbelt bridge subcommittee meeting august 17, 2006 3 design principles 1. Extradosed bridge midas structural analysis bridge. Remember, the pdf files are broadly compatible,often working on mobile deviceslike tablets and phones and of course computers. Download pdf papers for seminar report on extradosed bridge. Due to the additional support of the cables, an extradosed bridge may have a shallower superstructure depth relative to a traditional girder bridge.
Bridge types either passed or failed the performance requirements project constraints and technical suitability tier 2 screening bridge types that passed tier 1 were measured and analyzed against 6 performance attributes and 2 cost attributes. Ten different prototype models,as well as simple models. The 120mlong navigation spans are supported by five extradosed stay cables arranged in a singleplane harp configuration, whereas the approach spans are simplysupported. Also the measures to ensure that the site is environmentally friendly. The superstructure would be supported by cables above the deck anchored at one end to a central pylon and at the other end to the edge of the deck. The extradosed bridge is a hybrid of a cable stay and deck girder bridge. All bridge types can tie into either the rehabilitation or. It has the highest cost of the alternatives, but it would not require as high of a raised vertical as the plate girder bridge options. The bridge and tunnel concept report focused on four distinct conceptual bridge types illustrated in igures 1 f 4 and different tunnel options discussed in section 4. To establish the competitiveness of an extradosed bridge over a cantilever constructed boxgirder bridge and a cablestayed bridge. The extradosed cablestayed bridge uses a series of cablesupported spans to cross the river with equal span lengths of approximately 300 feet, as shown in figure 6. Croix river crossing project 3d design and modeling for highway structures conference april 14, 2015.
West bengal highway development corporation has awarded a construction contract that includes an extradosed bridge over the river hooghly. An extradosed bridge is a bridge type that combines a prestressed girder bridge with cablestayed bridge design concepts. There is another bridge for the nagano bullet train and other extradosed bridges are in the process of design. In this paper the latest technologies, an extradosed bridge, a cable stayed bridge, a. Synthesis of costeffectiveness of extradosed bridges.
Bridge construction, project execution plan details of how a bridge is constructed, and how the progress, safety and quality will be monitored and controlled. An extradosed bridge is a unique bridge type that utilizes both prestressed girder bridge and cablestayed bridge concepts. The fs recommended a preliminary design comprising a prestressed concrete extradosed bridge with railway provision labeled as alternative hr. However, an extradosed bridge still acts as a girder. Buckholdt began working for lunda in february of 1999, where he has been employed ever since. A joint venture two contractors has been named as the lowest bidder for the construction of an extradosed bridge in the state of karnataka, india. Behaviour and design of extradosed bridges tspace repository. After graduating from marquette university with a degree in civil engineering, mr. Elevated railway station bidder must have experience at least one project including an elevated railway station. Design and construction of cablestayed bridges in the czech republic jiri strasky, ph. The adobe output module aom plugin explained in this article is no longer supported and the functionality to create web galleries has been discontinued in the latest.
Model analysis methodology has been used for conduct the research. Major extradosed highway bridge projects are shown in table 1. Extradosed bridge theoretical and experimental verification. Therefore, it is not easy to integrate them with optimization software. New saddle system fixed at both ends was developed. Integral bridge midas seminar free download as powerpoint presentation. Since the concept of an extradosed bridge is still relatively new, there is no clear definition and specification of the type of bridge. Extradosedcable stayed the extradosedcable stayed bridge uses a series of cablesupported spans to cross the river with equal span lengths of approximately 300 feet, as shown in figure 6. The spantodepth ratio of extradosed bridges is typically on the order of 35to1, versus approximately 20to1 to 25to1 for girder bridges. The deh cho bridge can be classified as an extradosed bridge system. Development of extradosed structures in the bridge.
The choice for an extradosed bridge becomes an increasingly practical option for average size. In that respect, the thesisbychapter format may be advantageous, particularly for students pursuing a phd in the natural sciences, where the research content of a. This paper presents examples of short, medium, and longspan extradosed bridges designed and built in recent years in poland. He was leaning on the stone wall of the bridge, smoking a cigarette and watching the cars speed by on the highway beneath him. The multispan extradosed navigational section over the ganges is 1,920m long and the bridge has a total length of 4. Determined which bridge types have the technical merit to warrant further consideration. Extradosed cip concrete option 3 fink truss steel option 2 cip concrete. Type 4 extradosed bridge grade raise would be about 10 similar to new st. Lin international san francisco, california for 22 years, jiri strasky worked as chief design engineer with dopravni stavby, olomouca leading state company for the construction of. Extradosed bridges project details stay details additional services bridge geometry. Besides making a contact sheet,you can also create a presentation,essentially putting one image per page in your pdf filemaking it easy to bundle things up.
Since the concept of the bridge is still relatively new, there is no clear definition and design document or guideline for extradosed bridge s. Extradosed bridge bidder must have experience at least one project including cable stayed suspension extradosed bridge applicable to packages n02 only. Among the new structures, there is a group of modern extradosed bridges. The paper narrates the purpose of the six lane highway project linking between north and south zone of bihar state with 9. Disadvantages include the possible need for a temporary pedestrian bridge, significant. Extradosed bridge resembles similarity to cablestayed bridges, the difference lies in the tower height and the depth of the girder. Seth dawson asked, leaning on the stone wall next to him. Visually, extradosed bridges are most obviously distinguished from cablestayed bridges by. Mark buckholdt is a construction engineer with lunda construction company. The extradosed prestress bridge concept is relatively new in the field of structural and bridge engineering. The design should be inspired by clevelands civil, industrial, and bridge design. A static calculation of constructed bridge has to be done before experimental verifying. Since the first prestressed concrete bridge was constructed in 1952, tremendous prestressed concrete bridges have been constructed in japan.
Pylons width m main opening m total length m 3 rd narmada bridge national highways authority india. The bridge deck is anticipated to be 1 to 159 feet above the river surface and the towers would extend approximately 60 feet above the bridge deck. The design should maximize the possibility to create a visual image or statement, preferably with an abovedeck structure. He has 35 years of bridge design experience, beginning his bridge engineering career with arvid grant in olympia, wa. Godavari bridge in india the largest well used for main towers of howrah bridge having a size of 24. Since the introduction of this new type of bridge by j. The extradosed bridge can be thought of as an intermediate between the girder and cantilever bridge.
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