Of Steel Shim Plates nshims 10 No. Alternatively if survival of the elastomeric bearing itself is not required other means such as restrainers shock transmission units or dampeners shall be provided to prevent unseating of the superstructure.
Design Of Elastomeric Bearing Spreadsheet
It engages enlightens and empowers engineers through interesting informative and inspirational content.
. Design a steel reinforced elastomeric bearing for the interior girders at the intermediate pier A typical elastomer with hardness 60 Shore A Durometer and a shear modulus of 150 psi is assumed. Structural engineers or bridge engineers find it difficult to create the design for all the structural elements. The 175 ksi delamination stress limit of Eq.
Of Interior Elastomer Layers n 9 AASHTO 147533 Total Elastomer Thickness hrt 4750 in Total Bearing Height t 600 in OK 2 minimum height per BDM 1458 Bearing Material Properties Elastomer Grade Grade 3 Zone. Ø 0002 Radian Slope of girder at the bearing Dead Load unfactored DL 3934 kips. An Excel spreadsheet for the design of rectangular expansion bearing pads or fixed bearings with laminated pads This spreadsheet was developed to aid the design of typical rectangular steel laminated elastomeric bearings.
The following file contains an Excel spreadsheet used to calculate the joint opening size for NYS Armorless Bridge Joints. N Normal force perpendicular to surface kN. In order to use most of the spreadsheets enable macros.
Civilax - The Civil Engineering Knowledge Base is the premier resource for practicing civil structural engineers. DESIGN ELASTOMERIC BEARINGS While AASHTO Specifications allow two design approaches Methods A and B Section 14 many States have super-imposed their own limitations on the design process. Ii Mu Factored bending moment kN-m.
Transmission of normal forces. S147532-3 requires a total. The excel sheet can be used for the following purposes- Deck Reinforcement Design Girder Design Elastomeric Bearing Design There are diverse types of bridges which contain various types of structures.
Elastomeric bearing design spreadsheet. M Moment kN-m. INTRODUCTION ELASTOMERIC BEARINGS Introduced nearly 60 years ago Laminated SteelElastomer Bearing Pads are now in.
The program is applicable to the design of elastomeric pads and steel-reinforced elastomeric bearings both rectangular and circular in shape. This bearing is the connection between a structure and its support and should make the following possible through elastic deformation. Mx Maximum moment about transverse axis kN-m.
Local requirements should be. Engineering Spreadsheets Elastomeric Bearing Design according to AASHTO LRFD By Civilax - August 18 2015 1 627 The following design program was developed based upon the above-referenced AASHTO LRFD code. An Excel spreadsheet for the design of rectangular expansion bearing pads or fixed bearings with laminated pads This spreadsheet was developed to aid the design of typical rectangular steel laminated elastomeric bearings.
Elastomeric Bridge Bearing Design Design spreadsheet based on AASHTO 16th Edition 1197 Interim Method A AASHTO LRFD Bearing type P - Plain R - reinforced R Bearing type F - Fixed E - expansion E FoS 12 Dead Load rotation. Interior Elastomeric Thickness hri 0500 in Steel Plate Thickness hs 0125 in No. PD Service compressive load due to dead load kN.
PL Service compressive load due to live load kN. The following zipped file contains Mathcad worksheets that analyze and design elastomeric bridge bearings in accordance with the AASHTO LRFD specifications 2012 with 2013 Interim Revisions. L Length of a rectangular elastomeric bearing parallel to longitudinal bridge axis mm.
All Laminated Elastomeric Bearings are designed and supplied according to material properties and dimensions prescribed in the Australian Standards AS51004-2017. N Number of elastomer layers. The tables below summarise standard bearing sizes supplied in accordance with Australian Standards AS51004-2017.
PT Service compressive load due to total load kN. This spreadsheet is particularly aimed for creating the design of different. Elastomeric Bearing Design Example contd Corrected for Skew.
The 175 ksi delamination stress limit of Eq. It engages enlightens and empowers engineers through interesting informative and inspirational content. A laminated elastomeric bearing is an elastomeric rubber block reinforced with steel plates vulcanised when built.
To achieve quick summary of divergent sections and parts of diversified bridges the bridge design excel sheet is made. Hs Thickness of steel laminate in steel-laminated elastomeric bearing mm. Pr Factored compressive resistance kN.
Spreadsheet applies to rectangular shaped bearings only. Mmax Maximum service moment kNm. CIP Reinforced Concrete Box Culvert Program Software written under Iowa Highway Research Board Project TR-620 Update of RCB Culvert Standards to LRFD Specifications.
An Excel spreadsheet for the design of rectangular expansion bearing pads or fixed bearings with laminated pads This spreadsheet was developed to aid the design of typical rectangular steel laminated elastomeric bearings. Learn more on Microsofts website. I Moment of inertia mm4.
Mgr r skew x mg where r skew Correction Factor for Skew mg Uncorrected Distribution Factor neglecting skew MI0 826 mg V Uncorrected Distribution Factor For Shear Interior Beams mg V SE 0 762 Uncorrected Distribution Factor For Shear Exterior Beams. Rotation of the structure in. CulvertCalc 31 Installation Files 39 MB 031821 Installation Instructions.
Hrt Total elastomer thickness in an elastomeric bearing mm. Issued September 2020. In midas Civil the Elastic Links results forces and deformations properly combined with Load Combinations can be directly considered as the input for the separate design of the elastomeric bearings that should be conducted by the engineer.
In midas Civil you can use the Elastic Link. The Iowa DOT Bridge Design Manual BDM should be consulted for the most up-to-date policies. Steel-reinforced elastomeric bearing assemblies are typically designed to accommodate imposed seismic loads and displacements.
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