CIPARALL SLIDING BEARING - Calenberg

1 CIPARALL SLIDING BEARINGE lastomeric flexible SLIDING BEARING with transverse tensile reinforcement and dimensionally stable SLIDING surface,load capacity up to 15 N/mm2 ContentsPageProduct Description2 Design Equations3 Design Chart 14 Design Chart 25 Edge Distances6 Design Example7 Deflection8 Form of Delivery, Dimensions8 References9 Vertical Installation9 Installation Principle 10 Texts of Tender Document10 Friction Coefficients11 Test Certificates12 Encasings12 Product DescriptionCalenberg CIPARALL SLIDING Bearingscombine SLIDING and deformation properties of the BEARING where the SLIDING action is independent from thedeformation. Depending on the requirement bearings of different thicknesses can be selected. The bearings consist of: Rubber layers in combination with vulcanised steel plates and a low-friction PTFE layer that allowsmovement relative to the slide plate.

2 Slide plate of glass fibre reinforced plastic (GRP)2 I Product DescriptionFigure 1. Designation of the individual BEARING dimensionst1uaa1aguaububbgb1 The material of the tensile reinforcementdefines the type of BEARING CIPARALL SLIDING BEARING , GRPwith glass fibre reinforcement CIPARALL SLIDING BEARING , STwith steel reinforcementThe bearings are marked with additionaldesignations in order to specify moreclearly the specific application. For prefabricated construction the designation BnF (precast concreteunit) applies, for in situ construction thedesignation OBn is used, the bea-rings are encased with polystyrene andshrink-wrapped to prevent concretefrom entering the BEARING surface. If atthe same time effective fire protectionhas to be ensured the fire resistanceclass has to be specified ( F 90 or F 120 ).

3 In that case the bearings areadditionally fitted with a Ciflamon-fireprotection plate (see page 12). Thisapplies to type BnF as well as to type OBn .I3 Design EquationsImportant advantages of CIPARALL SLIDING Bearings are: Low friction coefficients allow nearlyunrestrained horizontal displacementsof the structural members. Angular rotations and imperfectionsare taken up by the elastic bearinglayer and are not transmitted to thesliding plane. CIPARALL SLIDING Bearings allow loadtransmission without damage whilstthe load is centred at the same tensile forces, flatnessimperfections of surfaces and creepdeformations are not transmitted to thesliding layer; the dimensionally stable SLIDING plane remains level and parallel,the SLIDING properties are is a precondition for the functionalityand operational safetyFigure 2.

4 Functioning modes of CIPARALL bearings* allowdepending on size, see Design Chart 1 Type of BearingCiparall SLIDING BEARING STCiparall SLIDING BearingGRPT otal thickness t14 mm(20, 30, 40) mm11 mmt [mm]11 mm20 mm30 mm40 ( - a1 b1) 15 N/mm21000a1or b1 40 allow [ ]1000a1or b1 40 2000a1or b1 40 3500a1or b1 40 5000a1or b1 40 15 N/mm2 * mmSlide plate thickness t1 Allowable average compressive stress allowallowable angular rotation allowtFH2 uM M a1 or b1 Ftt1beamcolumn corbelLoad applicationHorizontaldisplacementAngular rotation4 I Design Chart 1 CIPARALL SLIDING BEARING GRP; Thickness t = 14 mmallowable compressive stress allow [N/mm2] ofrotationSides ofbearing[mm] allow[ ]5060708090100 110 120 130 140 150 160 170 180 190 200 250 Chart 2 CIPARALL SLIDING BEARING ST.

5 Thickness t = 11, 20, 30 und 40 mmFatt1 Total thickness t [mm]11203040 Note: BEARING width a1 BEARING length b1 BEARING width a1[mm] allow[N/mm2] allow[N/mm2] allow[N/mm2] allow[N/mm2] allow[ ] allow[ ] allow[ ] allow[ ]1 Reinforced Concrete ConstructionThe edge distances to the concrete members have to be strictly adhered towhen using elastomeric bearings so as toavoid spalling. In Bulletin 525 the German Committee for Structural Concrete (DAfStb) has specified designcriteria for the edge distances on thebasis of DIN 1045 Concrete, reinforcedand prestressed concrete structures Part 1: Design and construction. Pleaserefer to Figure 3 for the denotation of theedge distances:aWidth of support without jointa1 Width of elastomeric bearinga2 Distance between BEARING and edge of support a2 Tolerance on dimension of the distance between the supportingstructural membersa3 Distance between BEARING and theouter edge of the supported structural member a3 Tolerance on dimension of the length of the supported structural memberb1 Length of elastomeric BEARING ua,bSliding distance in the direction of a and bThe minimum dimensions depend on theconcrete quality, type of support, type ofbearing and of the BEARING material.

6 Theycan be found in tables in the above mentioned Bulletin 525, page ConstructionIn the case of structural steel membersthe edge distance is at least double thebearing I Edge Distancesa3 + a3a3 + a3a3 + a3a2 + a2elastomeric bearingelastomeric bearinga1b1uaububauaSectionPlan viewFigure 3. Edge distances for SLIDING bearingsI7 Design ExamplesDesign Example accordingto DIN 1045 Concrete,reinforced and prestressedconcrete structures: Part 1 Design and construction Bulletin 525 Commentary to DIN1045 (DAfStb)Given System:Single span precast beam, beam supported on a corbel 1)with vertical stirrup reinforcement Characteristics of ConcreteStrength classC 30/37 Concrete cover cnom25 mm of the stirrup 8mmPartial safety factor for concrete compressivecylinder strength fck30 N/mm2 Design value of the uniaxial strength fcd17 N/mm2 Design value of the support N/mm2 Specific weight of concrete:25 kN/m3 Elastic modulus of concrete30 000 N/mm2 Beam DimensionsLength of beam: 15 mWidth of mHeight of mBeam spacing.

7 5 mLoads, Forces and DeflectionsDead load kN/mAssumed live load:3kN/m2 Actual live load p:15 kN/mMaximum load kN/mPartial safety factor reaction FEd:219 kNMoment of m4 cmHorizontal displacement ua:+- 8 mmEdge Distances Ed/fcd= 0,71 0,4a225 mm a213 mma357 mm a36mm2 ua16 mmSelection of BEARING and DimensionsType of BEARING : CIPARALL SLIDING BearingLength of elastomeric BEARING b1:160 mmWidth of elastomeric BEARING a1:140 mmLength of Slide plate bg170 mm 2)Width of Slide plate ag160 mmOverall thickness of BEARING t:40 mmCorbel dimensionsMinimum support width a:257 mmRounded support width a:260 mmSupport width a:300 mmBearing DesignCompressive stress existing= Ed= N/mm2 allow= 15 N/mm2 Horizontal displacementua,existing= 8 mm ua,allow= 10 mmAngular rotation existing= imp= 3) total= zul= 1)also see Figure 6 on page 102)160 mm would be sufficient, howeverdue to imperfections a 10 mm safetymargin is )A safety margin of 10 always applies to allow for manufacturing andinstallation tolerancesForm of Delivery,DimensionsCiparall SLIDING Bearings are manufacturedand delivered for the specific bearings can be provided withholes, slotted holes, cut-outs, slits that dowels and bolts can passthrough.

8 CIPARALL SLIDING BEARING GRPt = 14 mm CIPARALL SLIDING BEARING STt = 11, 20, 30, 40 mm Application for prefabricated construction (BnF): CIPARALL SLIDING BEARING , GRP, BnFb1/bg a1/ag t CIPARALL SLIDING BEARING , ST, BnFb1/bg a1/ag tApplication for in situ construction(OBn):For in situ application (OBn) the BEARING isprovided with a protective coverb1and a1: length and width of ag: length and width ofSlide platet: total thickness8 I DeflectionFigure 4. CIPARALL SLIDING BEARING , deflection (approximately) related to BEARING size 150 mm x 150 t[mm]Compressive stress D[N/mm2]11 mm14 mm20 mm30 mm40 mmReferences (excerpt) Schools, Educational Centres, Sport Facilities University of Applied Science, Bochum Electrotechnical Institute, Technical University Berlin Medical Department, G ttingen K lnarena, Cologne Olympic Stadium, Berlin Westphalia Stadium, Dortmund Central Stadium, Leipzig Industrial, Administrative, Service Buildings City Gallery, Augsburg New Town Hall, G ttingen Federal Printing Office, Berlin Pegel Tower, Goitzsche Federal Chancellary, Berlin MDR Head Office, Leipzig Airport Parking Garage, Leipzig Infineon, Dresden Trade Fair Hannover Trade Fair Frankfurt/M.

9 Natural Thermal Spring, Templin Ostseehalle, Kiel Airport Hamburg, Terminal 2/3 Warnow Park, RostockAbroad NCO-Exhibition Halls, Riyadh, Arabia Kinali-Sakarya-Motorway,2. Bridge across the Bosporus IKEA, Warsaw Old Brewery, Poznan, Poland Scottish Parliament, Edinburgh, Scotland Main-Bowl-Stadium, Lagos, NigeriaI9 Vertical Installationdirection of slidingcountersunk screws M8for connectionto the structuralmemberGRP-Slide plate, t = mmbearing, t = 15 mmstep drilling mm for round head screw M8 or hex socket head screw M8for connection to the structural memberFigure 5. Example of a CIPARALL SLIDING BEARING ST, t = 20 mm, vertical joint between two structural steel members and connection of the individual BEARING components to the adjacent structural membersCalenberg CIPARALL SLIDING BearingGRP for BnF or OBnDeliver with transverse tensile reinforcement as well as dimensionallystable SLIDING plane and permanentlyelastic flexible pad; BEARING capacity upto 15 N/mm2depending on size, generalbuilding authority test certificate No.

10 :b1/bg a1/ag item e/itemCalenberg CIPARALL SLIDING BearingST for BnF or OBnDeliver with transverse tensile reinforcement as well as dimensionallystable SLIDING plane and permanently elastic flexible pad; BEARING capacity upto 15 N/mm2 depending on size, generalbuilding authority test certificate No. :b1/bg a1/ag item e/item Supplier: Calenberg Ingenieure GmbHAm Kn bel 2-4D-31020 SalzhemmendorfPhone +49 (0) 51 53/94 00-0 Fax+49 (0) 51 53/94 00-4910 I Texts of Tender DocumentsFigure 6. Installation principle, the required edge distances have to be complied with (see page 6)displacement in alldirections possibleI11 Friction ValuesFigure 7. Installation of CIPARALL SLIDING BEARING with bore hole and slotted holeFigure 8. Friction values for CIPARALL SLIDING BEARING , values as a function of load cycle numberafter stop times are terminatedFigure 9: SLIDING friction for CIPARALL SLIDING BEARING , values as a function of total SLIDING distanceafter stop times are terminated valueNumber of load cycles0 valueSliding distance [mm]0100020003000400012 I PIB Reprint, photocopy or dublication even in extracts only written with permission of Calenberg Ingenieure GmbHThe contents of the publication in the result of many years ofresearch an experience gained in application technology.