Type of bridge bearing pdf file

Articulation is the term for the configuration of bridge supports and choice of structural bearings that provides the necessary restraints to the superstructure whilst at the same time providing freedom to some displacements and rotations in order to avoid unnecessary forces on both the superstructure and substructure due to constraint. A pdf file is a portable document format file, developed by adobe systems. Articulation is the term for the configuration of bridge supports and choice of structural bearings that provides the necessary restraints to the superstructure whilst at the same time providing freedom to some displacements and rotations in order to avoid unnecessary forces on both the superstructure and substructure due to constraint a range of different bearing types is available. Beam bridges are usually constructed of rcc or steel or a combination of both rcc and steel. The paint program can help you make new image files, but it cannot open document or pdf file. Sliding or rolling surfaces of bearings are coated with teflon, which significantly reduces the friction and consequently reduces horizontal forces acting on pierabutment. Bridge design specifications, section 14, should be considered the preferred type of bearing for all.

In a tapered roller bearing, the center lines do not converge at a common point. The bridge designer will prohibit movement in some bearings and allow movement in others. Steel bridge bearings may be divided into three general types. By michelle rae uy 24 january 2020 knowing how to combine pdf files isnt reserved. Help and tips on how to convert a pdf file to a microsoft word file or another file type.

Depending on the type of scanner you have, you might only be able to scan one page of a document at a time. A bridge bearing is a component of a bridge which typically provides a resting surface between bridge piers and the bridge deck. Pdf is a hugely popular format for documents simply because it is independent of the hardware or application used to create that file. Semiintegral construction may be used in lieu of expansion joints for single span bridges under 300 feet with the approval of the state bridge design engineer.

The sheets contain preengineered details for a variety of structural systems, such as earth retaining systems, bridge railings and underground structures. September 23, 2011 seal ed bids will be received electroni cally through the bid express bidding serviceuntil 10. Most structures require a mixture of bearing types and clients are advised to contact ccl at an early stage to ensure bearings are designed that perfectly match the structure requirements. Current maximum elastomeric laminated bearing size capabilities are. Read on to find out just how to combine multiple pdf files on macos and windows 10. A common form of modern bridge bearing is the elastomeric bridge bearing. Once youve done it, youll be able to easily send the logos you create to clients, make them available for download, or attach them to emails in a fo. The live load bearings restrain the live loads of road traffic and transfer them onto the fixed portion of the bridge when the opposing. Beam bridges are the simplest bridge type normally consists of one or more spans, supported by abutment or pier at each end.

As bridge expansion gaps form discontinuities in pavement they cause dynamic and. Permanently mark each bearing in orientation of all bearings must be developed by the a bearing layout which identifies. Designers need a selection of bearing types to handle varying demands. Similar with pot bearing, spherical bearing also can be divided into three types.

Four specimens of the concrete substructure are cast in two different sizes and strain gages embedded in the concrete at several locations. Bridge bearings dimitrios konstantinidis1, james m. See section 814 of louisiana standard specifications for roads and bridges for bearing specifications. There are several types of mechanical bridge bearing, such as the pinned bearing, which in turn includes specific types such as the rocker bearing, and the roller bearing.

A drawing showing the bearing layout should include the following. Inspection and evaluation of bridge bearings topic 9. Pdf modern bridge bearings and expansion joints for road bridges. Lrfdbased analysis and design procedures for bridge. How to convert pdf file to microsoft word or another file type. Designed for use in bridge and building construction under precast concrete beams, steel beam supports and other support points. Generally, the terminology used in en 37 is adopted in the table although not all types of bearing are covered by en 37. Use of pot bearing or other types of bearings requires approval from the bridge design engineer administrator. This article explains what pdfs are, how to open one, all the different ways. These bearings may have a rectangular, square or circular section.

Bridge standard details xs are developed and maintained by the division of engineering services des technical organization. Mild steel may be used in the manufacture of rocker, roller. As shown in figure9, pot bearing consists of elastomeric disk confined in a pot, steel piston that is properly tailored into the pot wall and flat sealing rings which keeps elastomeric inside the pot. Types of bearing table 1 shows the main types of bearing that are used in steel bridges. Expansion anchors shall be 34 diameter hilti kwik bolt 3 ss or equal with a working shear capacity of 5. You can use the tools in paint to add something to a different document. Metallic bearing usually made of mild steel, cast steel and stainless steel.

Behavior of masonry bearing plates in highway bridges. This document is disseminated under the sponsorship of the u. The type of bearing to be used in a bridge can be determined by a lot of factors. Compare the pdf file with the dgn file for validation on correct fonts displayed in microstation. Bearing types ccl designs bespoke bearings to exacting standards. Bridge deck joint allow a bridge to expand and contract due to a number factors as.

Bearing design steel bridge design handbook department of. I paid for a pro membership specifically to enable this feature. Inbs was superseded by the structural eurocodes for the design of new bridges. It is recognised that the air temperature in some regions of northern europe is lower than c. Reinforced elastomeric bearing pads, designed in accordance with. For proper display of bridge standards in microstation extract these font files into the c.

Three major types of bridge bearings are presented. An oversized pdf file can be hard to send through email and may not upload onto certain file managers. Elements of a conical roller bearing outdoor ring internal ring the bodies of rolling types of separator depending on the application, tapered bearings. Luckily, there are lots of free and paid tools that can compress a pdf file in just a few easy steps. The expansion bearings of the 200 ft tower spans require an axial force capacity of approximately 400 kips, while the expansion bearings of the 125.

Maximum load no buckling no tertiary creep or rupture maximum shear strain maximum compressive strain b q t rubber e. The bearing should be redesigned to attempt to reduce the shearing force. Steel bridge bearing design and detailing guidelines american. Design and implementation of load cell bearings to measure. Pennsylvania documents inservice performance via standard forms. If your scanner saves files as pdf portbale document format files, the potential exists to merge the individual files into one doc.

The bearing should be anchored by its inner ring or symmetrically from its outer ring. Bearing type, maximum loads, rotation values, order number, manufacture date and ce mark are shown over label. Bridge bearings types of bearings for bridge structures and. A bridge bearing provides a resting surface between the piers of a bridge and its deck. Wisconsin department of transportation bridge manual. June 15, 2012 seal ed bids will be received electroni cally through the bid express bidding serviceuntil 10.

Bridge decks supported by piers are susceptible to damage due to vehicle movement and heat expansion. The deck slab or sleeper may cantilever out to some extent beyond the extreme longitudinal girder. This means it can be viewed across multiple devices, regardless of the underlying operating system. Possible causes of movement are thermal expansion and contraction, creep, shrinkage, or fatigue due to the properties of the material used for the bearing. Several layers are placed on the bridge seat with the superstructure.

Creating a pdf file from a microsoft word file or other type of file is a common process. When the direction of the load weight being moved is at right angles to the shaft, it is called a radial load. A long, rigid horizontal support part of a structure. Download microstation design files zipped file, 485 kb this includes sheets bd. For the type iii bearing, the ert is not directly related to the total movement provided that the sliding surfaces remain in full contact as shown in figure 3.

Memo to designer s 71 june 1994 bridge bearings introduction aashto defines a bearing as a structural device that transmits loads while facilitating translation andor rotation. Experiences in the performance of bridge bearings and expansion. Another type of bridge bearing is the mechanical bridge bearing. The primary function of elastomeric bearing pads is to provide a connection to control the interactions of loading and movements between parts of a structure, usually between superstructure and substructure. While covering the subject of bridge bearings during various courses at iricen the absence of a document covering all aspects of different types of bridge bearings was acutely felt. A pdf file is an excellent way to provide a document to othe. Making a pdf file of a logo is surprisingly easy and is essential for most web designers. This iricen publication is a result of the desire to fill the gap.

This document is a standard developed by the aashtonsba steel bridge collaboration. Cube type the cube length, cube width, and cube height cylinder type the cylinder radius and cylinder height cell select a library object from bearinglib. Some prominent issues that can be considered are the strength and the stiffness of the bearing, cost, ease of installation, maintenance cost, etc. Both rocker and pin bearings are mainly employed in steel bridge structure. All the bearings are provided with a red metal label detailing the proprieties of the bearing. Information on bridge bearings is available in various technical literatures but it is scattered.

The spherical roller bearing will accept misalignment so it is important that the outer ring not be exposed to a moment load. In general, there are two types of supports shown on plans, fixed f or expansion e. An experimental investigation is conducted on the bridge bearing system and the behavior of the masonry bearing plate on the distribution of stresses is studied. Lrfd bearing pad design and analysis ix summary of october 1998 revisions version 1. Bearings are made to order to conform to all relevant local and.

Different types of bridges with pdf file engineering. Deck type bridges refer to those in which the road deck is carried on the top flange or on top of the supporting girders. To combine pdf files into a single pdf document is easier than it looks. Behavior of bearing plate type bridge bearings under. Print complete pdf set file size, 650 kb this includes sheets bdbg1er1 through bdbg6er1.

Download microstation design files zipped file, 198 kb this includes sheets bdbg1r1 through bdbg6r1. Most electronic documents such as software manuals, hardware manuals and ebooks come in the pdf portable document format file format. Roller bearings and rocker bearings are not allowed. Chapter 9 bearings and expansion joints bridge design. Elastomeric laminated bearings elbs are made from high purity elastomers which encapsulate layered internal steel reinforcing plates. Pdf introduced in 2010 en 37 structural bearings is nowadays a basic act. Print complete pdf set file size, 900 kb this includes sheets bdbg1r1 through bdbg6r1. They are an effective means of giving long expansive. Bridge bearings are used to transfer forces from the superstructure to the substructure, allowing the following types of movements of the superstructure. One of the fun things about computers is playing with programs like paint. In straight bridges, the following types of metallic bearings are adopted.

There is a contact angle between the ferrule and the ball. Bearings in this catalog are arranged by bearing type, with a size andor numerical listing. Example 3 type i bearing steel reinforced method b 1 218 design example 3 appendix a example 3 type i bearing steel reinforced method b general information material and section properties bearing dimensions bearing width w 20. Aashto bearing pads can be utilized between structural components in highway bridges, railroad bridges, and in all types of concrete andor steel structures as an e. The load cell bearings are being installed on two main span types on the structure, each with their own capacity requirements of the bearing. A support with a f will have a bearing device that will resist longitudinal movements. The top face of the bearing gives information on the type of the bearing and the direction of the axis of the bridge. Deck joint a gap between two spans, or the approach and a span, which allows for some rotation andor translation. Standard bearings bearings are individually moulded and the reinforcing plates are completely buried in the elastomer with at least 4mm lateral cover and generally 2. If your pdf reader is displaying an error instead of opening a pdf file, chances are that the file is c. Pdf file or convert a pdf file to docx, jpg, or other file format.

In this type of bridge bearing, the rocker pin is eliminated by casting the top of the bottom shoe in the shape of a hemisphere to function as a rocker pin. Elastomeric bearing design example universitas brawijaya. In situations where the bridge skew exceeds 30 degrees, consult the bearing and. Each bearing listing includes the appropriate dimensions. Jun 01, 2020 suitability this type of bridge bearings is suitable for a long span 20m long of the girder bridge. The most frequently used type of bearing for highway bridges is the proprietary pot bearing, which is able to accommodate rotation and. The live load bearings restrain the live loads of road traffic and transfer them onto the fixed portion of the bridge when the opposing spans are centerlocked, rather than transferring. Deck bridge hfl formation level through bridges in the through type bridges, the decking is supported by the bottom. Its purpose is to allow controlled movement between the two surfaces.

The separator, which retains the balls or rollers, is also called the cage. For the type ii bearing, the ert need only be equal to the total movement, due to the use of the teflon and stainless steel sliding surfaces. Granor has a full design capability and can custom design nonstandard sized laminated bearings for unique project requirements. The concrete elements used in beam bridges may be reinforced, prestressed or posttensioned. Steel reinforced elastomeric bridge bearings shall only be designed with virgin neoprene not. Spherical bearing, also called spherical bridge bearing, is one type of bridge bearings with large rotation capacity. Bridge bearings california department of transportation. If the specific bearing type is not known, reference the index in the back of the guide for the page number where the bearing is listed. The construction layout sheet in the plans will show the designers intent. The rolling elements distinguish the two basic bearing types ball bearings and roller bearings. Jun 04, 2018 the official web site for the state of new jersey. Rocker and pin bearing should be considered when the bridge movement is adequately known and described, since such bearings can make rooms for both translational and rotational movements in one direction only. Use l type abutments with expansion joints at the ends for multiplespan bridges. The effects of the thickness of the bearing plate, size of the concrete substructure, ratio of.

With high strengthened steel body, spherical bearing is especially designed for high vertical, horizontal and. The bearing should be shop vulcanized under heat and pressure to a bottom steel plate that is anchored to the substructure. Lrfdbased analysis and design procedures for bridge bearings. The purpose of a bearing is to allow controlled movement and thereby reduce the stresses involved.