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

(slides 70-71) For these reinforcement methods, staticand dynamic testing have been undertaken to confirm theireffectiveness. Numerous simple tests have been applied onactual masonry structures to confirm which of the measuresare effective in masonry structures. Presently in the centralregion of the earthquake-affected country of Italy, suchtesting is done to compare the effectiveness of variousmethods for the same category of masonry structures forstudies in improvement of mechanical criteria of buildings.Reinforcement of Masonry Joints(slides 72-74) There are other reinforcement methods tobe noted. This is a way of adding on elements for increasingtensile strength onto connections in masonry structures builtwith general joint material, according to the aimed effect. Upto about 20 years ago, stainless steel rods were used. Today,more appropriate materials of thinner FRP rods and bandsare employed.? Diagonal compression test;Prof. Eng. Claudio ModenaInterventions to strengthen the masonry wallsInterventions - RESEARCH? Characterization of grout-original mortar interface.SM IngegneriaEffect of six injection grouts, use to strengthen irregular stone masonry walls, damaged by April 6 th 2009earthquakeProf. Eng. Claudio ModenaInterventions - APPLICATIONSInterventions to strengthen the masonry wallsReinforced repointing testing and modeling: the use of FRP bars and thin stripsSM IngegneriaUsing innovative materials while ensuring compatibilityand removability(1.5x5 mm)slide 69slide 72Prof. Eng. Claudio ModenaProf. Eng. Claudio ModenaInterventions - RESEARCHSM IngegneriaInterventions - APPLICATIONSSM IngegneriaInterventions to strengthen the masonry wallsDynamic behaviour whole structures Building ModelsFloor Dimensions:2.40m x 2.8mHeight: 3.60mRegular openingsMasonry deepness: 0.33m(12cm external layers 9cm internal filler)Double planking wooden floorsAdditional masses (500kg per floor)Interventions to strengthen the masonry wallsReinforced repointing: application for the control of long term behaviorS. Sofia Church, Padova, XII c.Penna et al. 2009Montenegro earthquake (14/4/1979) waschosen and the signal was elaboratedconsidering the scale factor of 2:3;slide 70slide 73Prof. Eng. Claudio ModenaInterventions - RESEARCHInterventions to strengthen the masonry wallsThe dynamic behaviour of models was monitored using several systems simultaneously:Accelerations were recordedusing two systems:Displacement monitoringsystems:? More than 100 points wereoptically monitored;? Deformation of 3 panels;? Base Displacement;? 16 Sensors fixed externallyat masonry;? 6 Sensors fixed internally tothe wooden beams;slide 71SM IngegneriaExperimental stepsURM ModelSM ModelRM Model0.05g XY0.05g XY0.05g XY0.10g XY0.10g XY0.10g XY0.15g XY0.15g XY0.15g XY0.20g XY0.20g XY0.20g XY0.25gI XY0.25g XY0.25g XY0.25gII XY0.30g XY0.30g XY0.30g XY0.35g XY0.35g XY0.35g XY0.40g XY0.40g XY0.40g XY0.45g XY0.45g XY0.45g XY0.50g XY0.50g XY-0.55g XY0.55g XY-0.55g X0.55g XY-0.60g X0.60g XY-0.65g X--0.70g I X--0.70g II X-Prof. Eng. Claudio ModenaInterventions - APPLICATIONSScrew endDetails of the hooping systemslide 74SM Ingegneria61