ブックタイトル「煉瓦造建造物の保存と修復」英語版

概要

「煉瓦造建造物の保存と修復」英語版

sezione A-Ascala 1:20(slide 50-52) This is a view of asymmetric stress, close tothat of an earthquake, being applied for testing durability.On-site experiments under various conditions such asdifferent velocities, enabled us to clarify the structuralresponses of walls accurately. This analytical method can beprogrammed to reflect local architectural characteristics.(slide 53-55) These are photos of testing on stone vaultsand details. This preventive measure for improving structuralresponse of buildings was mentioned earlier.(slide 56) In the early 16th century, an architect reinforcedthe top surface of vaults, which had the same effect asreinforcement with FRP. By employing FRP today, it functionsto further improve the extant traditional reinforcement. Thisis a typical method of vault reinforcement.Reinforcing Bridges(slide 57) This is an interesting case, from the designaspect as well, of the use of a material such as FRP forProf. Eng. Claudio ModenaProf. Eng. Claudio ModenaInterventions - RESEARCHInterventions to improve the behaviour of arches and vaultsVMFAILURE MECHANISMSRigid block mechanism, opening of hinges without shear failure(VM, VC_BTRM VC_FR_SRG e VC_FR_SRP)SM IngegneriaInterventions - RESEARCHTEST ON VAULTS- IN SITUSTEELBASALTCARBONSM Ingegneria(Cescatti Modena, 2016)DTVC_BTRMSRGBTRMVC_FR_SRG/SRPCFRPslide 52Fibres designed according the ultimate strengthslide 55Prof. Eng. Claudio ModenaProf. Eng. Claudio ModenaTEST ON VAULTS- IN SITU? Geometrical survey? Material typologiesInterventions - RESEARCHSM Ingegneria(Cescatti Modena, 2016)DTInterventions - APPLICATIONSInterventions to improve the behaviour of arches and vaultsApplication of extrados elements and FRP laminates to vaults: examplesDucale Palace, Urbino:- Substitution of the thin“frenelli”(5 cm thick) withsolid brick panels (16 cm thick).- Application to the both sides of CFRP strips tomake active the“frenelli”up to their ends.- Realization of transverse ribs connected to the“frenelli”edges by thin solid brick panels and aCFRP strip on the top.SM IngegneriaC? Material testing (flat jack - coring)4.00BRICK MASONRYC3.503.00Stress [MPa]2.502.00Jack M4B1.50Jack M3B1.00Jack M11B0.50Jack M18B0.00-500 0 500 1000 1500 2000 2500Strain (me)slide 53slide 56Prof. Eng. Claudio ModenaInterventions - RESEARCHTEST ON VAULTS- IN SITU110 brick rowsSM Ingegneria(Cescatti Modena, 2016)DTProf. Eng. Claudio ModenaDepartment of Civil, Environmental and Architectural EngineeringUniversity of Padova, ItalySandro Gallo bridge ?retrofit intervention? The repair interventionThe intervention relies on the utilization of the existing structure,strengthened by the use of traditional technique (new brick layer)combined with innovative materials (CFRP).The central part of the arch span is strengthened by the insertion of onemore layer of bricks. The thrust inside the vault is transferred from thenew elements to the older structure in correspondence of the existingthickening of the arch (from three to four bricks). The connection betweenthe new and the old masonry was obtained by positioning of brick unitsorthogonal to the axial line of the arch used as connectors, and positioningof steel bars, glued to the old structure with epoxy resin.1.1 m0.8 m5.6 mslide 54slide 5758Chapter 5 Criteria and Techniques for Repairing and Strengthening Architectural Heritage: Research and Application