Bearing used in the construction of bridge structure is divided into two major categories namely expansion bearings and fixed bearings. Expansion joints for use in highway bridge decks contents chapter 1. When such expansion bearings fail to meet project requirements, steel type at expansion bearings should be used. Bridge bearings and expansion joints, second edition d. For curved andor highly skewed bridges, consideration should be given to the use of pot bearings. Minimize number when conditions permit, the bridge.
To accommodate differential lateral movement, elastomeric bearings or combination bearings with the capacity for lateral movement should be used instead of longitudinal joints where practical. On the other hand the gap between bridge and abutment is bridged by means of expansion joints. Arfen makes technical meetings with the customer to find solutionsand most economical design. Goodco ztech expansion joints are customdesigned and fabricated to accommodate the structural movements of highway bridges, multilevel parking garages as well as various civil engineering works such as dams, airports and others. There are several types of bridge bearings which have been employed in. Our internal team of engineers and fabricators will work with you to design the right solution for your bridge project. The project was aided by the use of aashto lfrd bridge design. Joints and bearings expansion joints and bearings provide mechanisms to accommodate movements of bridges without generating excessive internal forces. Expansion joints ensure the continuity of bridge traffic while ensuring a watertight seal on the deck. Elastomeric bridge bearings are designed to transform the movement and rotation of bridge structure into elasticity and minimizes the secondary stress generated in the bridge because of the layered rubber sheets reinforced by metal plates. Modern bridge bearings and expansion joints for road.
You must nominate in the schedule of prices the mbej system proposed for the tender price option 1. Bearings and expansion joints probalbly cause more difficulties fro the bridge engineer than any other part detailing and careful installation of the bearings, drainage and expansion joints. This book is aimed at both students and practising engineers, working in the field of bridge design, construction, analysis, inspection maintenance and repair. As a bridge expansion joint specialist, freyssinet is able to offer a full. Modern bridge bearings and expansion joints for road bridges article pdf available in transportation research procedia 14. Structural bearings and expansion joints for bridges sed 6. Bridge bearings types of bearings for bridge structures and. Structural bearings and expansion joints for bridges. Bridge bearings pads and expansion joints factory visit youtube. Possible causes of movement are thermal expansion and contraction, creep, shrinkage, or fatigue due to the properties of the material used for the bearing. Freyssinet has been installing expansion joints to structures all over the world for more than 40 years. 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. The expansion joints are flushed out from the top of the deck or side of the bridge depending on the type of expansion joint and accessibility of the side of the bridge to remove debris. Pdf, 58 kb heavy duty allmetal expansion joints migutrans.
The unit of measurement is lump sum to supply all systems required for the works in accordance with this specification. Lists of transport for nsw approved bridge components and. This chapter presents ndot criteria for the design and selection of expansion joints in bridges. Bridge expansion joint installations freyssinet uk.
Goodco ztech expansion joints prevent structural damage. Enquiries annex a requirements for departmental type approval of bridge deck expansion joints. Bridge bearings and expansion joints in searchworks catalog. Lee this book provides a guide to movement and restraint in bridges for bridge engineers and will enable them to draw up design calculations and specifications for effective installation, and satisfactory service and durability of bearings and joints. Elastomeric bridge bearings are the most popular type of bridge bearing used today. Arfen as a construction material manufacturers, is exporting product to 25 countries internationally as well as nationally. The former permits both translational and rotational movements whereas the latter allow rotational and limited translational movements. Product catalog pdf, 7372 kb compression profile tensacompress a. Bridge bearing function and designs expansion joints orf. Bridge deck joints and deck joint seals introduction although often thought of as static, highway structures are continually in a state of motion. Bridge decks supported by piers are susceptible to damage due to vehicle movement and heat expansion. Each system was compared on the premise of initial cost, life.
Introduction in recent decades one can observe a great development of modern structural designs for bearings, block et al. Jan 31, 2017 bridge bearings pads and expansion joints factory visit. General expansion joints accommodate the expansion and contraction of bridges due to temperature variations. Longitudinal deck expansion joints should be avoided for bridge widths under 100. Then the bearings, bearing seat, and the area surrounding the bearings are sprayed. Structural bearings and expansion joints for bridges sed. Pdf, 824 kb modular joint tensamodular lr and lrls. Since the use of steel, reinforced concrete and prestressed concrete as bridge building materials, structural bridge bearings had to be used.
The target of this paper is to give a very short stateoftheartreport on bearings and expansion. Kinedyne incorporated modular expansion joints and systems are subdivided in several secondary gaps by steel members called edge rails and center beams. Pdf standard bridge drawing in adobe portable document format. Bridge bearings and expansion joints, second edition lee, d j, lee, d. Expansion joint comprised of two horizontal steel plates, one on each side of. Product brochure pdf, 83 kb expansion joint covers for wall and floor areas migutec. Eliminating expansion joints in bridges aspire bridge. Dgn standard bridge drawing in microstation design file format. How ever, the joints should be situated in zones with minimal stress range and must be welded very carefully because of the high fatigue loads.
The following general criteria apply to all expansion joints in bridges. Modern bridge bearings and expansion joints are at present rather mechanical structures but not construction ones as they were treated previously. Lifting and measuring bearings restonpot liftcontrol. Construction of new expansion joints 3rd mainland bridge duration. Semiintegral construction may be used in lieu of expansion joints for single span bridges under 300 feet with the approval of the bridge design. Each rail and beam incorporates a locking cavity to mechanically secure the seal into place. These bearings are designed to accommodate vertical, longitudinal, horizontal and transverse loads movements and rotation of the superstructure caused by.
Many state highway agencies allow eliminating expansions joints for bridges that are less than 350 ft long with steel eliminating expansion joints in bridges by dr. Proprietary bridge expansion joints company product name joint type freyssinet australia cipec wp series steel fingerplate joints. The granor etic sfej series steel finger joints are robust bridge deck expansion joints that accommodate larger movements ranging from 150mm up to 600mm total capacity. Modern bridge bearings and expansion joints for road bridges andrzej niemierko a, aroad and bridge research institute, instytutowa 1, 03302 warsaw, poland abstract introduced in 2010 en 37 structural bearings is nowadays a basic act intention of which is providing a good manufacturing quality and operation of modern bridge bearings. Grouts bridge bearings fosroc conbextra ep range and bb80 cable grouts post tensionedpre stressed cables fosroc cebex and conbextra cable grout bonding adhesive bridge segments fosroc nitobond sba joint sealants expansion joints fosroc colpor 200 and nitoseal ms300 structural strengthening piers, soffits, abutments fosroc nitowrap range. Elastomeric bearings can be made at a low cost, and do not need to be maintained, like other forms of bearings that have moving parts and are made. Concrete undergoes expansion due to high temperature when in a confined boundary which leads to cracks. The footbridge leading to adelaide oval also incorporates granor pot bearings whilst also having one of the 1st applications of a wabo seismic span ii expansion joint. Expansion joints are provided in slabs, pavements, buildings, bridges, sidewalks, railway tracks, piping systems, ships, and other structures. Typical abutment details for steel beam and girder bridges. Watertight joints protect the bridge deck and the bearings below, preventing water ingress, concrete spalling and structural failure. Bearings and expansion joints chapter 9 wsdot bridge design manual m 2350. Preformed silicone expansion joint seals for highway bridges. Expansion and contraction caused by temperature changes, shortening and creep caused by prestressing, deflections caused by.
Bridge design specifications aashto lrfd specifications for maximum bridge length allowed without expansion joints. This book is written to help the practising bridge engineer to understand the principles of movement of bridge structures and to achieve sound designs. Expansion joint in concrete types and characteristics. These joints should be adopted where the structure gap will open beyond 85mm uls, in which case the use of a stripseal type single seal element joint will transgress the. Expansion joints rubber expansion joints manufacturer. Bridge bearings elastomeric bridge bearing manufacturer. This section provides guidance on joint and bearing selection and the movement and loads that must be used in their designs. The 55,000 seat stadium in adelaide uses over number of granor seat platon bearings pads to provide comfort and structural isolation. Bridge expansion joints are also designed to allow sufficient vertical movement so that bearings can be replaced without needing to disassemble the expansion joint. Modern bridge bearings and expansion joints for road bridges. Pdf modern bridge bearings and expansion joints for road.
Pdf modern bridge bearings and expansion joints for road bridges. The target of this paper is to give a very short stateoftheartreport on bearings and expansion joints for bridges. A refined analysis of the entire bridge may be necessary to characterize the thermal movement of complex bridges. Bridge bearings and expansion joints used for highway bridges, whose. Structural bearings and expansion joints for bridges sed 6 details this book is aimed at both students and practising engineers, working in the field of bridge design, construction, analysis, inspection maintenance and repair. Standard practice for washing and cleaning concrete bridge. They are made of rubber and do not have any moving parts, because the rubber itself allows movement in the bridge. Rocker is an expansion bearing composed of curved surface at the bottom, which accommodate translational movement and a pin at the top makes room for rotation movement as illustrated figure2 and figure3 in detail. The purpose of a bearing is to allow controlled movement and thereby reduce the stresses involved.
The sealing elements, when gripped between the rails and beams, will provide a water tight. It has influence on durability and reliability of bridge expansion joints which are often complex mechanical structures. Wisdot bridge manual chapter 27 bearings july 2019 274 the preferred choice for expansion bearings. Designer supplement to the standard bridge drawing in adobe portable document format. Lists of transport for nsw approved bridge components and systems. Arfen as a construction material manufacturers, is exporting. Bridge bearings types of bearings for bridge structures. Expansion joints september 2008 191 chapter 19 expansion joints lrfd article 14. Bridge bearings are used to transfer forces from the superstructure to the substructure, allowing the following types of movements of the superstructure. Bridge bearings and expansion joints, second edition. Bridge bearings pads and expansion joints factory visit. The theory and practice of bearings and expansion joints for bridges. Expansion and contraction caused by temperature changes, shortening and creep caused by prestressing, deflections caused by live loads, and longitudinal forces.