This paper presents examples of short, medium, and longspan extradosed bridges designed and built in recent years in poland. 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. Extradosed cip concrete option 3 fink truss steel option 2 cip concrete. Elevated railway station bidder must have experience at least one project including an elevated railway station. Ten different prototype models,as well as simple models. Presentation overview project background extradosed structure 101 schedule. In the paper, the rather sophisticated bridge superstructure is considered. Pdf extradosed bridges in polanddesign and construction. All bridge types can tie into either the rehabilitation or. An extradosed bridge employs a structure that combines the main elements of both a prestressed box girder bridge and a cablestayed bridge. After graduating from marquette university with a degree in civil engineering, mr.
Among the new structures, there is a group of modern extradosed bridges. This is a great way to email a collection of imagesto a client as a single attachment. Since the concept of an extradosed bridge is still relatively new, there is no clear definition and specification of the type of bridge. The spantodepth ratio of extradosed bridges is typically on the order of 35to1, versus approximately 20to1 to 25to1 for girder bridges. Since structural analysis has been the only function considered when developing most of structure analysis software, they suffer from closeness of system. The multispan extradosed navigational section over the ganges is 1,920m long and the bridge has a total length of 4. The extradosed bridge type was identified for the st. Model analysis methodology has been used for conduct the research. Seth dawson asked, leaning on the stone wall next to him. 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. Type 4 extradosed bridge grade raise would be about 10 similar to new st. It was a nice experience for students in terms of learning the construction project management. The extradosed prestress bridge concept is relatively new in the field of structural and bridge engineering.
A new output workspace has been introduced to generate pdf contact sheet natively in bridge. Synthesis of costeffectiveness of extradosed bridges. Behaviour and design of extradosed bridges tspace repository. Extradosed bridges relatively new bridge form 1988 france. For help documentation, see create a pdf contact sheet in output workspace. 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. A study of 51 extradosed bridges shows the variability in proportions and use of extradosed bridges, and compares their material quantities and. An extradosed bridge is a unique bridge type that utilizes both prestressed girder bridge and cablestayed bridge concepts.
Remember, the pdf files are broadly compatible,often working on mobile deviceslike tablets and phones and of course computers. Extradosed bridge midas structural analysis bridge. Download pdf papers for seminar report on extradosed bridge. Clarity is paramount when determining the structurelayout of your dissertation.
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. Marion street pedestrian bridge 30% preliminary design august 2nd, 2018 city of seattle. 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. Mark buckholdt is a construction engineer with lunda construction company. Croix river crossing project 3d design and modeling for highway structures conference april 14, 2015. 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. Innerbelt bridge subcommittee meeting august 17, 2006 3 design principles 1. Innerbelt bridge subcommittee meeting 4 meeting minutes. The deh cho bridge can be classified as an extradosed bridge system. The design should be inspired by clevelands civil, industrial, and bridge design. The design should maximize the possibility to create a visual image or statement, preferably with an abovedeck structure.
Pdf study on extradosed bridge and its structural behavior. 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 extradosed bridge can be thought of as an intermediate between the girder and cantilever bridge. Since the first prestressed concrete bridge was constructed in 1952, tremendous prestressed concrete bridges have been constructed in japan. The fs recommended a preliminary design comprising a prestressed concrete extradosed bridge with railway provision labeled as alternative hr. Third karnaphuli bridge is the first major extradosed bridge in bangladesh crossing karnaphuli river, used as a reference structure for analysis of structural behavior. In this paper the latest technologies, an extradosed bridge, a cable stayed bridge, a. Design and construction of the deh cho bridge challenges. Design and construction of cablestayed bridges in the czech republic jiri strasky, ph. Due to the additional support of the cables, an extradosed bridge may have a shallower superstructure depth relative to a traditional girder bridge. West bengal highway development corporation has awarded a construction contract that includes an extradosed bridge over the river hooghly.
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. Visually, extradosed bridges are most obviously distinguished from cablestayed bridges by. Marion street pedestrian bridge replacement project phase 1. On the bridge todd strasser i beat the crap out of this guy at the mall yesterday, adam lockwood said. Extradosed bridge theoretical and experimental verification. Extradosed bridges relatively new bridge form 1988 france first was constructed in japan in 1994 more than 100 worldwide, mostly in japan very new form to north america selected to address specific site constraints similar to cable stay and segmental box. However, an extradosed bridge still acts as a girder. Major extradosed highway bridge projects are shown in table 1. 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.
Integral bridge midas seminar free download as powerpoint presentation. Bridge construction, project execution plan details of how a bridge is constructed, and how the progress, safety and quality will be monitored and controlled. Extradosed bridges project details stay details additional services bridge geometry. Development of extradosed structures in the bridge. Extradosed bridge bidder must have experience at least one project including cable stayed suspension extradosed bridge applicable to packages n02 only. 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. Therefore, it is not easy to integrate them with optimization software.
Determined which bridge types have the technical merit to warrant further consideration. An extradosed bridge consists of short towers with cables connecting the towers to the bridge deck. To establish the competitiveness of an extradosed bridge over a cantilever constructed boxgirder bridge and a cablestayed bridge. 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. Pylons width m main opening m total length m 3 rd narmada bridge national highways authority india. The choice for an extradosed bridge becomes an increasingly practical option for average size. He was leaning on the stone wall of the bridge, smoking a cigarette and watching the cars speed by on the highway beneath him. Since the concept of the bridge is still relatively new, there is no clear definition and design document or guideline for extradosed bridge s. Godavari bridge in india the largest well used for main towers of howrah bridge having a size of 24. An extradosed bridge employs a structure that is frequently described as a cross between a girder bridge and a cablestayed bridge. An extradosed bridge is a bridge type that combines a prestressed girder bridge with cablestayed bridge design concepts.
Extradosed bridge resembles similarity to cablestayed bridges, the difference lies in the tower height and the depth of the girder. Buckholdt began working for lunda in february of 1999, where he has been employed ever since. 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. To satisfy all demanded code requests, still more and more precise transformation models are demanded. The extradosed bridge is a hybrid of a cable stay and deck girder bridge. 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. The paper narrates the purpose of the six lane highway project linking between north and south zone of bihar state with 9. Design and construction of cablestayed bridges in the. Disadvantages include the possible need for a temporary pedestrian bridge, significant. The 120mlong navigation spans are supported by five extradosed stay cables arranged in a singleplane harp configuration, whereas the approach spans are simplysupported. 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. 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. New saddle system fixed at both ends was developed.
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. There is another bridge for the nagano bullet train and other extradosed bridges are in the process of design. In order to solve structural optimization problems in the past, it is necessary to integrate structure analysis software and optimization software. 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.
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