Otros Documentos

THE CONSTRUCTION INDUSTRY IS EXPERIENCING CHANGES IN ITS PROCESSES AND WORK METHODS, AND THE ADVANCEMENT OF NEW TECHNOLOGIES IN RECENT DECADES HAS LED TO A NEW CONCEPT KNOWN AS CONSTRUCTION 4.0, COINED IN 2016 IN GERMANY. SINCE ITS DEFINITION IS STILL DIFFUSE, IT WAS DEEMED NECESSARY TO CONDUCT A REVIEW ON THE PUBLICATIONS IN THIS FIELD TO GRASP HOW THIS CONCEPT IS BEING UNDERSTOOD. FOR THAT PURPOSE, A BIBLIOMETRIC ANALYSIS WAS CONDUCTED AMONG 260 RESEARCH ARTICLES USING SEVEN KEYWORDS. THE RESULTS REVEAL THAT THE NUMBER OF PUBLICATIONS IS GROWING EXPONENTIALLY, WITH THE USA, THE UK, AND CHINA BEING LEADERS IN THIS FIELD; BESIDES, FOUR TECHNOLOGIES ARE ESSENTIAL TO UNDERSTAND CONSTRUCTION 4.0 AT PRESENT TIME: 3D PRINTING, BIG DATA, VIRTUAL REALITY, AND INTERNET OF THINGS. THE RESULTS OF THIS REVIEW SUGGEST THAT FURTHER REVIEWS SHOULD BE CONDUCTED EVERY 3 YEARS TO GRASP THE RAPID EVOLUTION OF CONSTRUCTION 4.0.

UNREINFORCED MASONRY WALLS (URM) ARE STRUCTURAL ELEMENTS USUALLY OBSERVED IN HERITAGE BUILDINGS IN CHILE. THE ASSESSMENT OF THE ELASTIC PROPERTIES OF THIS KIND OF STRUCTURES IS GENERALLY A CHALLENGING TASK, BECAUSE OF ITS ORTHOTROPIC BEHAVIOUR AND THE DIFFICULTIES TO EXTRACT AND TO HANDLE IN SITU SAMPLES FOR DESTRUCTIVE EXPERIMENTAL TESTS. THE STUDY PRESENTED HERE AIMS TO ESTIMATE THE ELASTIC MECHANICAL PROPERTIES OF URM WALLS BY APPLYING VIBRATION BASED NON-DESTRUCTIVE TECHNIQUES. A REPRESENTATIVE SEGMENT OF URM WALL WAS BUILT IN THE LABORATORY AND SUBJECTED TO A SERIES MODAL TESTS USING LOW ENERGY IMPACTS AS EXCITATION SOURCE. MODAL PROPERTIES OF THE WALL WERE ESTIMATED THROUGH ENHANCED FREQUENCY DOMAIN DECOMPOSITION (EFDD) AND STOCHASTIC SUBSPACE IDENTIFICATION (SSI) METHODS. AN ORTHOTROPIC FINITE ELEMENT MODEL OF THE WALL WAS SUCCESSIVELY UPDATING THROUGH GLOBAL SENSITIVITY ANALYSIS TECHNIQUES UNTIL THE DIFFERENCES BETWEEN EXPERIMENTAL AND NUMERICALLY SIMULATED MODAL PROPERTIES WERE MINIMAL. THE RESULTS SUGGEST THAT THIS APPROACH CAN BE EXTENDED TO MORE COMPLICATED STRUCTURAL CONFIGURATIONS.

LA PRESENTE PROPUESTA CONSISTE EN EL DISEÑO COLABORATIVO DE UN EDIFICIO TECNOLÓGICAMENTE INNOVADOR, DESDE EL MODELO CONCEPTUAL HASTA SU PLAN DE CONSTRUCCIÓN, CONCEBIDO ÍNTEGRAMENTE UTILIZANDO METODOLOGÍA BIM (ARQUITECTURA, ESTRUCTURAS Y MEP), Y QUE HOY ESTÁ CONCURSANDO EN UN IMPORTANTE CONCURSO INTERNACIONAL DE DISEÑO Y CONSTRUCCIÓN, ORGANIZADO POR UNA EMPRESA CANADIENSE.