The 5-Second Trick For Bridge Bearing Replacement - System Builders Maintenance

Memorandum All Style Section Staff J. Kapur August 16, 2002 Bridge Bearing Replacement Provisions This style memo is planned to clarify the intent of Section 8. 4.3. C. 6 of the Bridge Design Handbook. All bridge bearings aside from steel reinforced elastomeric bearings will normally be created and detailed to accommodate the installation and operation of hydraulic jacks to help with bearing replacement.

Some concerns have actually developed concerning the need to accommodate elastomeric bearing replacement at prestressed concrete girder bridge abutments.  Answers Shown Here  "A" girders (having essential end diaphragms) need not be detailed to accommodate elastomeric bearing replacement. End type "B" girders (having L-type abutments) shall be designed and detailed to accommodate elastomeric bearing replacement.

The basic end diaphragms for long period girders may not have adequate flexural and shear capability for the jacking operations. The designer will inspect these and supply adequate steel support to accommodate shear forces and minutes induced by jacking operations (Girder end types "A" and "B" are depicted on BDM sheets 6.

Building Bridges – CCL RESOURCE CENTRE

The Main Principles Of Replacing non-renewable bearings on a 96-year-old bridge

2-A1-6). By the way, intermediate piers having actually steel reinforced elastomeric bearings shall likewise be developed and detailed to help with bearing replacement. Background Girder end type "A" corresponds to bridges having integral end diaphragms over abutments. These structures are fairly brief (less then 400 feet). As a result, the elastomeric bearings undergo smaller longitudinal shear distortions and rotations.

Girder end type "B" corresponds to bridges having L-type abutments. These structures are typically longer that 400 feet or have large skew angles. Subsequently, they undergo larger longitudinal shear contortions and rotations. The likelihood of these bearings slipping out and needing resetting or replacement is greater. Easy adjustments having minimal economic impact can be made to girder stops and/or end diaphragms to facilitate hydraulic jack setup and bearing replacement.

Spherical Bearing - Fixed, Guided & Free Sliding Type

Bearing pad durability in precast concrete garages - Construction Specifier

Freyssinet provides a range of jacking strategies, including applications which conquer issues in both new construction and existing structures or buildings. Jacks can be run vertically to lift structures however likewise horizontally to move them. Freyssinet's capabilities consist of bridge lifting and moving, bearing replacement, high strength bar tensioning, load transfer, pre-stressing, control of settlement and payment jacking, force measurement, and weighing.