easy installation ptfe pot bearing plate in bridge
bearing devices are located under th e beam, girder or slab at points of support (abutments, piers or hinges). Figure 1 If this movement is re stricted or prevented, a build up of fo rces will cause unde sirable movements or distress and potential failure. The bridge designer will prohibit movement in some bearings and allow movement in others. In
Pot Bearings The structural rotations are adjusted thanks to an elastomeric pad, which responds with high vertical stiffness and low rotation resistance, confined into a steel pot. Displacements are adjusted by a PTFE layer sliding on a stainless steel sheet. BRIDGE BEARINGS - CCLWithin the base plate a rocker is fully retained in the pot. The rocker has a lubricated, dimpled PTFE disc which slides against the stainless steel plate. The stainless steel plate is fitted to the machined top plate allowing free horizontal movements between the two sections of the bearing. PG GUIDED SLIDING POT BEARING
POT PTFE. The pot bearing consists of cylindrical Pot, a non-reinforced elastomeric pad which is confined inside the POT, A Piston which is attached to the top of the bearing plate to transfer the load from the bridge deck to the elastomeric pad and a seal to minimize or prevent the elastomeric pad from slipping out of the POT. Bridge Bearings - iricen.govCHAPTER - 6 POT BEARINGS 6.1 General 93 6.2 POT-PTFE Bearing vs Elastomeric Bearing 94 6.3 Properties of PTFE 95 6.4 Permissible Bearing Pressure on PTFE 100 6.5 Other Recommendations for Design 101 of PTFE Sliding Bearing 6.6 Design Aspects 103 6.7 Installation of POT Bearings 105 6.8 Design Specifications for POT-PTFE Bearings 109 6.9 Design
elastomeric bridge bearings pot cum ptfe bearings ELASTOMERIC BRIDGE BEARINGS Bridge Bearings Bridge Expansion Joints Elastomeric Bridge Bearings are designed to transform the movement and rotation of bridge structure into elasticity and minimizes the secondary stress generated in bridge because of the layered rubber sheets reinforced by metal Development of Pot Bearing Standardsand money with regard to pot bearing use in bridge construction. At this time, the AASHTO T-2 Bearing Committee has not respon ded to the formal recommendations made by the project panel with regard to pot bearing design specification changes. 17. Key Words bearings, multi-rotational bearings, pot bearings 18. Distribution Statement No
The PTFE rubber bearing plates have the characteristics of simple structure, low price, no maintenance, easy replacement, low building height, etc., so it is very popular and had been widely used in the field of bridge engineering industry. The PTFE rubber bearing plate is a layer of 1.5mm-3mm thick PTFE plate glued on the surface of the plate FHWA Bridge Inspection Manual Section 9 Bridge BearingsSECTION 9:Inspection and Evaluation of Bridge Bearings TOPIC 9.1:Bridge Bearings 9.1.5 Bronze Bearing Plates A bronze bearing plate was introduced to avoid the corrosion problems of steel plates in contact with one another. Since bronze does not corrode, it was used to maintain the freedom of movement. Although corrosion is reduced, the bronze,
Steel Bridge Bearing Design and Detailing Guidelines Section 1 Elastomeric Bearings 1.1 General Commentary This section is intended to assist in the design and detailing of elastomeric bridge bearings. The information included is intended to permit efficient fabrication, installation, and maintenance of these bearings. G 9.1 - Steel Bridge Bearing Design and Detailing Steel Bridge Bearing Design and Detailing Guidelines Section 1 Elastomeric Bearings 1.1 General Commentary This section is intended to assist in the design and detailing of elastomeric bridge bearings. The information included is intended to permit efficient fabrication, installation, and maintenance of these bearings.
Ankit gupta, Diwakar prakash verma (2014) has reviewed about the Suitability of POT PTFE bearing in Bridges. Design of Pot-PTFE bearing is governed by the minimum average stress on the PTFE disc, elastomeric Pad and the top plate at which all the system is fixed .It is evident Item 434 Bridge Bearings - ftp.dot.state.tx.usFurnish and install bearings for the support of bridge superstructure and substructure members. Bridge (PTFE) recessed and bonded to a steel plate that is vulcanized to the top of a either disc bearings or pot bearings unless a disc or pot bearing is specifically required on the plans. Provide
LCL's Pot Bearings have been designed to be very easy to install, maintenance-free and cost-effective. The product has been successfully used in a broad range of applications which include:bridges, viaducts, high rise buildings, stadiums and dams. LCL's Pot Bearings are designed for very high vertical, horizontal and lateral loads and where rotational structural displacements need to be accommodated. LCL-Bridge - Pot BearingsLCL's Pot Bearings have been designed to be very easy to install, maintenance-free and cost-effective. The product has been successfully used in a broad range of applications which include:bridges, viaducts, high rise buildings, stadiums and dams. LCL's Pot Bearings are designed for very high vertical, horizontal and lateral loads and where rotational structural displacements need to be accommodated.
Laminated rubber bearings with reinforced steel plate inserted can bearing heavy load, rotation and displacement in right or curved bridge construction. Easy to install. Rectangular laminated bearing pads with or without PTFE bearing pads are ideal for right bridge and roads for bear heavy load and extend bridge life. MAURER Pot Bearings - Maurer SE - PDF Catalogs As basic materials steel and elastomer (carbon/PTFE) in bridge bearing quality (PTFE) are used. Small restoring moments in case of the usual superstructural deformations. Maurer Söhne head ofce:Frankfurter Ring 193, D-80807 Munich p.o. box 44 01 45, D-80750 Munich phone +49/89/3 23 94-0 fax +49/89/3 23 94-306 e-mail [email protected]
Pot Bearing design is based on calculation of IRC:83 (Part III)-2002. The basic elements of a Pot Bearing consists of a shallow cylinder, known as pot, an elastomeric pad known as disc, a single or set of sealing rings, piston and sliding surfaces. Masonry plates and base plates are common for the installation of pot bearings, as they allow PSP011 Pot Bearings - NCDOTon a fixed pot bearing with a layer of virgin polytetraflouroethylene (PTFE) material on its top, masonry plate, anchor bolt assembly which includes anchor bolts, nuts, washers, pipe sleeves, a closure plate, grout and various sizes of standard pipe and any other necessary material as detailed on the plans. 2.0 MATERIALS Use pot bearings
10.0 INSTALLATION The bearing components can be located to the installation by bolting, tack-welding, full welding or mortar embedment, and the appropriate type of bearing should be chosen according to the installation method. The PTFE should be adequately protected against weld spatter, paint spray, metal swarf etc, during installation. PTFE slide bearing pads - PolyfluorPTFE slide bearing sheets/Skidway systems; Slide bearing sheets/Skidway systems. PTFE (or compounds) is often used in food industry, road (bridge) construction, support of pipe systems and heavy installation constructions. By adding PTFE to the free movable construction parts (metal, rubber and so on) shrink and expansion, due to
Pot bearing, also known as pot rubber bearing, with elastomeric bearing embedded inside of the steel plate, can be divided into fixed pot bearing, guided pot bearing and free sliding pot bearing. Pot bearings are special types of bridge bearings for taking large loads, large horizontal displacements and large rotation requirements in confined areas. Pot Bearings - TrelleborgPot Bearings are split into three main types: Fixed (TF) Guided (TGe) Free (TGa) The following tables describe these Pot Bearing types in reference to load, displacement and standard rotation parameters. Generally mobile pot bearing (TGa) scale and pointer sliding plate assembly rubber pad pot cover PTFE sliding area sliding sheet metal
Nov 27, 2014 · Materials Steel conform to Section 6 of Standard Specifications for Road & Bridge Construction Stainless steel conform to requirements of 220.127.116.11 item (5) Neoprene and natural rubber conform to AASHTO M251 (ASTM D4014) and Shore A durometer hardness 50±10 points Elastomer shall be lubricated between steel pot and top steel bearing plate with Presentation on Pot Bearings - SlideShareNov 27, 2014 · Presentation on Pot Bearings 1. Upgrading of Falaj Al Qabail R/A POT BEARINGS 2. Project Location 3. Project Particulars Client:Ministry of Transport & Communications Consultant:Renardet S.A & Partners L.L.C. Contractor:Consolidated Contractors Co. Oman L.L.C. Contract No.:51/2012 Commencement Date:30.12.2013 Completion date:29.06.2015 Original Contract Value
tr = Thickness of elastomeric pad in pot bearing (mm). tring = Thickness of brass sealing ring in pot bearing (mm). tw = Pot wall thickness (mm). tpist = Piston thickness (pot bearing) (mm). trim = Height of piston rim in pot bearing (mm). W = Width of a rectangular elastomeric bearing (perpendicular to longitudinal bridge axis) (mm). STEEL BRIDGE BEARING STEEL BRIDGE BEARING tr = Thickness of elastomeric pad in pot bearing (mm). tring = Thickness of brass sealing ring in pot bearing (mm). tw = Pot wall thickness (mm). tpist = Piston thickness (pot bearing) (mm). trim = Height of piston rim in pot bearing (mm). W = Width of a rectangular elastomeric bearing (perpendicular to longitudinal bridge axis) (mm).
Spherical bearing, also called spherical bridge bearing, is one type of bridge bearings with large rotation capacity.Similar with pot bearing, spherical bearing also can be divided into three types:fixed spherical bearing, guided spherical bearing and free sliding spherical bearing.With high strengthened steel body, spherical bearing is especially designed for high vertical, horizontal and Spherical Bridge Bearings for Bridges and Building StructuresSpherical bridge bearing, also called spherical bearing, spherical bearing pad, is designed to ensure vertical and horizontal forces transferring under control which is a connection devices between superstructures and substructures.It consists of steel plate enclosed with edge sliding guide and stainless steel panel for sliding controlling, under the stainless steel panel is a PTFE sheet
Aug 16, 2018 · HLMR) pot and disc style, spherical, seismic isolation and elastomeric bearing assemblies for all types of construction. D.S. Brown is available to work closely with bridge owners and engineering design consultants to assist in the design, selection and testing of the proper structural bearing assemblies. 2 Types & Functions Of Bearings for Bridges CivilDigitalMar 16, 2017 · Types & Functions Of Bearings for Bridges Function Of Bearings. Bridge bearings are used to transfer forces from the superstructure to the substructure, allowing the following types of movements of the superstructure:Translation movements; are displacements in vertical and horizontal directions due to in-plane or out-of-plane forces like wind and self weight.
Mar 16, 2017 · Types & Functions Of Bearings for Bridges Function Of Bearings. Bridge bearings are used to transfer forces from the superstructure to the substructure, allowing the following types of movements of the superstructure:Translation movements; are displacements in vertical and horizontal directions due to in-plane or out-of-plane forces like wind and self weight. Use of Bearings under the Bridge:7 TypesThe sliding bearing consists of one plate over the other with graphite or grease between the plates for easy movement. Stopper plates are welded to the bottom plate to prevent sidewise movement. Elastomeric Pot Bearings: Pure PTFE is not used in bridge bearings since it has low resistance to wear and susceptibility to cold flow or
Versiflex HLMR Pot Bearing Assemblies are suitable at locations where low-profile, high-load bearing devices are required. Versiflex HLMR Pot Bearing Assemblies are especially suited for curved or skewed bridges and other complex structures where the direction of rotation varies or cannot be precisely determined.. Uni Directional Designs PMG and PMCG Series What is preset in bridge bearing? - Civil EngineeringPreset is a method to reduce the size of upper plates of sliding bearings in order to save cost. The normal length of an upper bearing plate should be composed of the following components = length of bearing + 2xirreversible movement + 2xreversible movement.
Apr 26, 2011 · Between the sheets are one layer of PTFE (with suitable fillers) and one layer of polished stainless steel. The stainless steel is welded to one of the bearing plates while the PTFE is bonded to the other plate. To provide for better bonding, a recess is created on the bearing plate into which the PTFE WisDOT Bridge Manual Chapter 27 BearingsWisDOT Bridge Manual Chapter 27 Bearings July 2019 27-3 27.2 Bearing Types Bridge bearings are of two general types:expansion and fixed. Bearings can be fixed in both the longitudinal and transverse directions, fixed in one directi on and expansion in the other, or expansion in both directions.
Easy installation Low maintenance welded to the underside of a steel plate and a PTFE disc bonded to the upper surface of the pot or piston Athabasca River Bridge. Goodco Z-Tech pot bearings can be used for bridges, railway and highway overpasses and buildings.