Elastomeric and steel expansion joints elastomeric and steel expansion joints realize connections between different parts of structures allowing relative movements. Spherical bearings spherical bearings are the most uptodate technology, providing the most efficient and most durable design for bridge bearings design. Wisdot bridge manual chapter 27 bearings july 2019 274 the preferred choice for expansion bearings. Arfen as a construction material manufacturers, is exporting product to 25 countries internationally as. Expansion joint bridge expansion, compression seal. Modern bridge bearings and expansion joints are at present rather mechanical structures but not construction ones as they were treated previously. As this is achieved by some plan rotation, movements at intermediate sup. The following general criteria apply to all expansion joints in bridges. Kinedyne incorporated modular expansion joints and systems are subdivided in several secondary gaps by steel members called edge rails and center beams. This section provides guidance on joint and bearing selection and the movement and loads that must be used in their designs. Sealing of bridge expansion joint systems is important to protect the structural components below the joint from damage due to water, salt, and other roadway debris. A new elastomeric foamtype joint sealant has been developed for sealing smallmovement bridge expansion joints. Bearings and expansion joints chapter 9 wsdot bridge design manual m 2350. Bridge bearings elastomeric bridge bearing manufacturer.
Bridge bearings and expansion joints in searchworks catalog. 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. Bridge bearings pads and expansion joints factory visit duration. Annex b of bs en 19932 contains guidance for the preparation of a technical specification for expansion joints. Goodco ztech expansion joints prevent structural damage. Structural bearings expansion joints tuned mass dampers seismic devices traffic, wind, seismic and humaninduced movements and rotations in buildings, bridges and complex structures can be controlled through selective use of expansion joints, structural bearings, tuned mass dampers and seismic devices to protect the structures from damage. In modern bridge structures, bridge bearings and expansion joints are commonly the source of most maintenance and performance issues. Expansion joints september 2008 19i table of contents. Emseals bridge solutions have been repeatedly recognized nationally by many certifying organizations for innovation and design. Scribd is the worlds largest social reading and publishing site. Identical in construction to the fixed bearings, these multidirectional devices are fitted with a virgin ptfe sheet in contact with an. General expansion joints accommodate the expansion and contraction of bridges due to temperature variations. Bridge bearings and expansion joints pdf download bit.
Each rail and beam incorporates a locking cavity to mechanically secure the seal into place. Bridge bearings types of bearings for bridge structures. Introduction in recent decades one can observe a great development of modern structural designs for bearings, block et al. Orf bridge solution offers a variety of expansion joints to suit a wide range of movement and gaps between bridge decks. Introduced in 2010 en 37 structural bearings is nowadays a basic act intention of which is providing a good.
If you need to print pages from this book, we recommend downloading it as a pdf. Watertight joints protect the bridge deck and the bearings below, preventing water ingress, concrete spalling. The complex rubbermetal composite structure of the orf expansion joints facilitates in accommodating the displacement and rotation of the concrete structures relative to each other in all. Sealed expansion joint systems provide barriers preventing runoff water and deicing chemicals from passing through the joint onto bearing and substructure elements below the bridge deck. For curved andor highly skewed bridges, consideration should be given to the use of pot bearings.
Bridge bearings and expansion joints, second edition. 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. Bridge bearings are used to transfer forces from the superstructure to the substructure, allowing the following types of movements of the superstructure. This design concept requires that each center beam be free to translate along. Bridge bearings and expansion joints, second edition lee, d j, lee, d. These bearings are designed to accommodate vertical, longitudinal, horizontal and transverse loads movements and rotation. In some situations their performance can lead to the closurefailure of major structures and their maintenance can be extremely difficult and costly to implement. Joints and bearings expansion joints and bearings provide mechanisms to accommodate movements of bridges without generating excessive internal forces. Pdf introduced in 2010 en 37 structural bearings is nowadays a basic act intention. Get a free quote no job is too big our internal team of engineers and fabricators will work with you to design the right solution for your bridge. Full text of structural bearings and expansion joints for.
The 2017 bejs durable tabbed product information and selection guide is now available from emseal. Expansion joints ensure the continuity of bridge traffic while ensuring a watertight seal on the deck. The sealing elements, when gripped between the rails and beams, will provide a water tight. Allow bridge to expand and contract w temperature changes. The purpose of a bearing is to allow controlled movement and thereby reduce the stresses involved. Unfortunately, this book cant be printed from the openbook. Bridge bearings types of bearings for bridge structures and details. Minimize number when conditions permit, the bridge. Buy bridge bearings and expansion joints, second edition 2 by lee, d j, lee, d.
Maurer earthquake protection systems pdf, 2 mb english. Pdf modern bridge bearings and expansion joints for road bridges. Sealing expansion joints on bridge and highway structures. Bridge bearings pads and expansion joints factory visit shahzad khan. Full text of structural bearings and expansion joints for bridges.
View underneath max wilder bridge showing result of leaky joint seal. It has influence on durability and reliability of bridge expansion joints which are often complex mechanical structures. Expansion joints for highway a73 in the netherlands. Construction of new expansion joints 3rd mainland bridge duration. Boltdown panel joints strip seal joints steel finger joints design example 2 25. The former permits both translational and rotational movements whereas the latter allow rotational.
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. The theory and practice of bearings and expansion joints for bridges. My intent was to give a short guideline on bearings and expansion joints for bridge designers and not to mention all the requirements for the manufacturers of such products. Bridge joint maintenance transportation research board. This book is written to help the practising bridge engineer to understand the principles of movement of bridge structures and to achieve sound designs. Bridge bearings and expansion joints free ebook download as pdf file. Modern bridge bearings and expansion joints for road bridges.
Granor structural bearings bridge expansion joints. Bridge bearings pads and expansion joints factory visit. Structural bearings and expansion joints for bridges. 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. The 55,000 seat stadium in adelaide uses over number of granor seat platon bearings pads to provide comfort and structural isolation. Infrastructure preservation through watertight bridge expansion joints. Forces on bearings and joints are calculated for the relevant design situations. For more information on bridge bearings, expansion joints, freyssibar and shock transmission units call 01952 201901. A bridge bearing is a component of a bridge which typically provides a resting surface between bridge piers and the bridge deck. Bridge bearings expansion joints products cts industries. An expansion joint represents a discontinuity point in a road pavement. Modern bridge bearings and expansion joints for road. 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. Expansion joints expansion joints june 14 page 2 this presentation contains certain forward looking statements concerning future business prospects and profitability of hcc, which are subject to a number of risks and uncertainties and actual results could materially differ from those in such forward looking statements, important.
Ekspans es range of expansion joint seals can be fitted beneath. Therefore, it is extremely sensitive to errors of various natures, which lead to the development of anomalies that. Pdf modern bridge bearings and expansion joints for road. Provide blockouts in decks and approach slabs at expansion joints to allow for placement of the joint. The bridge designer should specify the expansion joints in a similar manner to bearings, giving details of characteristic and design values of displacements to the joint designer.
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