BRIDGE REHABILITATION USING FRP- CASE STUDIES PEDRAM MOJARRAD SIKA AUSTRALIA
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1 BRIDGE REHABILITATION USING FRP- CASE STUDIES PEDRAM MOJARRAD SIKA AUSTRALIA
2 BRIDGE STRENGTHENING 2 November 26, 2015Title of Presentation / Meeting Name
3 SIKA FRP PRODUCT RANGE MAIN FRP STRENGTHENING MATERIALS Prefabricated systems CFRP plates L-shaped plates NSM applications Post-tensioned CFRP system Structural adhesives Manual application systems Fabrics Anchorages tails Grid FRP meshes Structural adhesives Prefabricated systems represent 80% of the current applications in Europe, as they are usually considered as a safer system (lower safety factors and less restrictions regarding the unevenness of the concrete surface, ) and higher efficiency during the installation process. 3 November, 2013 CFRP Workshop
4 ANCHORING TAIL
5 NSM (NEAR SURFACE MOUNTED)
6 INTRODUCTION MECHANICAL PERFORMANCE OF FRP SYSTEMS CARBON FIBER GLASS FIBER ARAMID FIBER STIFFNESS PRICE TENACITY STRUCTURAL STRENGTHENING SEISMIC MASONRY STRENGTHENING SEISMIC IMPACT BLAST MITIGATION 6 November, 2013 CFRP Workshop
7 FRP STRENGTH FIBERS COMPARISON ULTIMATE STRENGTH 5000 MPa 4000 MPa 3000 MPa 2000 MPa DESIGN STRENGTH 1000 MPa STEEL Carbon Basalt Glass Aramid 7 October 2015 Structural Strengthening design based on ACI 440 Guideline
8 DEVELOPMENT OF THE FRP SYSTEMS 1967: Structural Adhesives initially developed for steel plate bonding for Strengthening 1970 Long Term Test at EMPA (still ongoing) Steel: long-term durability is critical as a result of the risk of corrosion. From 90s, steel plates were progressively substituted by CFRP systems. 8 October 2015 Structural Strengthening design based on ACI 440 Guideline
9 SIKA FRP PRODUCT RANGE CFRP RANGE DEVELOPMENT 1982: Tests of Carbon Fiber Reinforced Polymer (CFRP) Plates for Structural Strengthening of Reinforced Concrete Cyclic Load Test >50 test beams Climatic Test (heat+humidity) 9 October 2015 Structural Strengthening design based on ACI 440 Guideline 1989 PhD Thesis H.-P. Kaiser, EMPA, Switzerland
10 SIKA FRP PRODUCT RANGE FIRST APPLICATION OF SIKA CFRP PLATES 1991: First Application of CFRP plates for Structural Strengthening of a bridge Ibach Bridge, Zurich (Switzerland) 10 October 2015 Structural Strengthening design based on ACI 440 Guideline
11 CFRP STRENGTHENING OF BEAMS AS A SIMPLIFICATION: 11 October 2015 Structural Strengthening design based on ACI 440 Guideline
12 COLUMN CONFINEMENT POISSON S EFFECT Due to the Poisson s effect, the concrete is transversally expanded when compressed. This expansion leads to the collapse of the column, as concrete has a very limited capacity for elongation. Hence, if the transversal expansion is restricted, the final strength increases 12 October 2015 Structural Strengthening design based on ACI 440 Guideline
13 COLUMN CONFINEMENT POISSON S EFFECT To avoid the lateral expansion, its necessary to ensure a confinement around the element, by using a rigid material with a high strength. This material must keep the geometry of the member when it tries to expand. 13 October 2015 Structural Strengthening design based on ACI 440 Guideline
14 DESIGN GUIDELINES (in addition to FIB BULLETING 14) LOCAL EUROPEAN GUIDELINES Concrete Society TR55 (UK): Design guidance for strengthening concrete structures using fibre composite materials. CUR-91 (Netherlands): Strengthening of reinforced concrete structures with externally glued CFRP. DAfStb Heft 591 (Germany): Strengthening of concrete elements by means of extrenally bonded reinforcements. SIA 166 (Switzerland): Externally bonded reinforcement. CNR-DT 200 (Italy): Guide for the design and construction of externally bonded FRP systems for strengthening existing structures. 14 October 2015 Structural Strengthening design based on ACI 440 Guideline
15 DESIGN GUIDELINES OTHER COUNTRIES CSA S (Canada): Design and construction of building structures with fibre-reinforced polymers ECP 208 (Egypt): Egyptian code of practice for the use of fiber reinforced polymer ( FRP) in the construction fields Society of Civil Engineers (JSCE, Japan): Recommendation for design and construction of concrete structures using continuous fiber reinforc ing materials American Concrete Institute, ACI 440.2R. (USA): Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures. AS5100-8: Bridge Rehabilitation 15 October 2015 Structural Strengthening design based on ACI 440 Guideline
16 INTRODUCTION SIKA FRP DESIGN SOFTWARES SIKA FRP-ANALYSIS ACI440 (EXCEL) SIKA STATIK SIKA S3 SIKA CARBODUR FIB14 (2014) SIKA CARBODUR ACI440 (2015) 16 October 2015 Structural Strengthening design based on ACI 440 Guideline
17 DESIGN SOFTWARE 17 November 26, 2015Title of Presentation / Meeting Name
18 SIKA CARBODUR SOFTWARE: KEY ADVANTAGES PROFESSIONAL Unlike simplistic excel sheets or calculation tools, the Sika CarboDur software comprises highperformance calculation possibilities for real situations, for example: Strengthening of full structural members according to its loads distribution. The design is not based on a single section Calculation of complex geometries both for reinforced or prestressed concrete members. Full FRP range of solutions (bonded, NSM, postensioned CFRP) according to the local availability 2D and 3D interaction diagrams for columns, allowing the calculation of elements exposed to axial + bending simultaneously 18 October 2015 Structural Strengthening design based on ACI 440 Guideline
19 DESIGN SOFTWARE 19 November 26, 2015Title of Presentation / Meeting Name
20 CASE STUDIES INTERNATIONAL AND LOCAL
21 GRAFTON BRIDGE- AUCKLAND NZ 21 November 26, 2015Title of Presentation / Meeting Name
22 SUNSHINE SKYWAY BRIDGE- FLORIDA USA 22 November 26, 2015Title of Presentation / Meeting Name
23 FULL SCALE LOAD TESTING 23 November 26, 2015Title of Presentation / Meeting Name
24 TRESTLE SPAN REPAIRS 24
25 PONT DU DANCOURT, DONCHÉRY (ARDENNES), FRANCE 25 November 26, 2015Title of Presentation / Meeting Name
26 BUNBURY BRIDGE 26 November 26, 2015Title of Presentation / Meeting Name
27 BUNBURY BRIDGES 27 November 26, 2015Title of Presentation / Meeting Name
28 DARBY RIVER- VIC
29 DARBY RIVER- VIC Solution: The site had to be completely encased to ensure there was no contamination of the river waterway or surrounding native bushland. The result is a successful rehabilitation and strengthening of the Darby River Bridge that achieved the result with minimal disruption to traffic flow allowing full access to one of Australia s most spectacular national parks. Date: April, November 26, 2015Title of Presentation / Meeting Name
30 DARBY RIVER 30 November 26, 2015Title of Presentation / Meeting Name
31 NARROWS BRIDGE WA
32 NARROWS BRIDGE Carbon Fibre laminate was used to strengthen the structure. Application to the deck soffit was efficient, particularly with the long lengths involved (up to 55 metres). Date: April 2001 Location: Perth, WA Contractor: Structural Systems, WA 32 November 26, 2015Title of Presentation / Meeting Name
33 NARROWS BRIDGE 33 November 26, 2015Title of Presentation / Meeting Name
34 M80 FREEWAY UPGRADE PLENTY RD BRIDGE VIC
35 M80 FREEWAY UPGRADE PLENTY RD BRIDGE Using NSM (Near Surface Mounting) technology, 12mm diameter were selected, so not to upset any existing steel reinforcement, cutting 20mm into the road deck concrete. These carbon fibre rods are fully encapsulated in Specialised Structural Epoxy Resin paste. providing maximum protection and strengthening effects per light weight unit. Date: February 2014 Contractor: Structural Systems VIC 35 November 26, 2015Title of Presentation / Meeting Name
36 M80 FREEWAY UPGRADE PLENTY RD BRIDGE 36 November 26, 2015Title of Presentation / Meeting Name
37 M80 FREEWAY UPGRADE PLENTY RD BRIDGE 37 November 26, 2015Title of Presentation / Meeting Name
38 TIMBER BRIDGE, SINS SWITZERLAND
39 TIMBER BRIDGE, SINS SWITZERLAND
40 TIMBER BRIDGE, SINS SWITZERLAND
41 TIMBER BRIDGE, SINS SWITZERLAND
42 PRE-STRESSED CFRP
43 SIKA CARBOSTRESS (POST TENSIONED CFRP) SIKA CARBODUR CFRP SOLUTIONS
44 SIKA CARBOSTRESS (POST TENSIONED CFRP) SIKA CARBODUR CFRP SOLUTIONS
45 SUMMARY CFRP application is easy and quick to apply and eliminates all the hassle using steel, etc. Bonding is critical, though. So needs decent substrate preparation. Being applied on concrete, steel and timber, successfully. Obviously requirements are different. Seismic upgrade. Durable. Still can be protected against UV, fire, CFRP a good solution for many cases, but not the only one. Limitations apply. 45 November 26, 2015Title of Presentation / Meeting Name
46 THANK YOU FOR YOUR ATTENTION
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