Orientadores: Newton de Oliveira Pinto Júnior, João Alberto Venegas Requena / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo / Made available in DSpace on 2018-08-22T02:16:45Z (GMT). No. of bitstreams: 1 Silva_AugustoOttoniBuenoda_D.pdf: 10620003 bytes, checksum: 1ae2a0949d644fd7b3bdbee6ccba8b20 (MD5) Previous issue date: 2013 / Resumo: As treliças mistas em aço-concreto, alternativas bastante eficientes para vencer grandes vãos, são geralmente empregadas em edifícios comerciais e industriais, e, em pontes ferroviárias e rodoviárias. Em muitos casos, para que se possibilite a passagem de dutos, dificultada nos quadros com presença de diagonais, e construído um painel Vierendeel central; porem, em algumas situações, este único painel pode ser insuficiente, necessitando-se então a criação de novos painéis para satisfazer o uso que se pretende dar a construção. Neste sentido, o objetivo do estudo foi determinar através de um procedimento de calculo analítico e modelagens elástica bi-dimensional e plástica tri-dimensional, a capacidade resistente e o modo de ruptura de uma treliça tubular mista bi-apoiados com 15 metros de vão, sendo todo o terço central constituído por painéis Vierendeel. Em seguida, mantendo-se o vão de 15 metros e os perfis estipulados no dimensionamento, foi feita uma parametrização dos resultados para estruturas com 3, 7, 9 e 13 painéis. O estudo, desenvolvido para cargas de escritório, apontou a proporção vão/3 - vão/3 - vão/3 como a ideal para a relação entre trechos treliçado - Vierendeel - treliçado, pois ao se aumentar a proporção do trecho central ocupado pelos painéis Vierendeel, os novos sistemas perdem muita rigidez passando a não suportar mais a carga estipulada no projeto. Alem disso, podem passar a apresentar deslocamentos verticais excessivos e resistência às forcas cortantes externas atuantes sobre os painéis insuficiente / Abstract: The steel-concrete composite trusses, an efficient alternative to overcome large spans, are generally used in commercial and industrial buildings, and rail and road bridges. In many cases, in order to enable the passage of ducts, with complications in the frames with the presence of diagonals, a central Vierendeel panel is built, but in some situations, if this single panel may be insufficient, then one would need to create new panels to meet the intended use to build. In this case, the objective of the study was to determine, through analytical calculation, two-dimensional elastic modeling and three-dimensional plastic modeling, the bearing capacity and failure mode of a bi-supported truss with a 15 meter span, and the entire central third consisting of Vierendeel panels. Then, keeping the span of 15 meters and the sections determined in the design, a parameterization of the results was made for structures having 3, 7, 9 and 13 panels. The study developed for office loads, found the proportion span/3 - span/3 - span/3, as the ideal relationship for the truss - Vierendeel - truss lengths, because by increasing the proportion of the length occupied by the central Vierendeel panels, the new system loses stiffness and no longer support the load stipulated in the project. Furthermore, they can start presenting excessive vertical displacements and insufficient resistance to external shear forces acting on the panels / Doutorado / Estruturas / Doutor em Engenharia Civil

After the ISO9000 series of quality management standards was released by the International Organization of Standard, certificate of ISO9001¡G1994 was deemed by enterprises as a guarantee for performance improvement. Ironically, not until recently is the implementation of ISO9001: 2000 substantially depreciated and suspected as an obstacle to efficient operation. Since the certificate of ISO9001 still represents the passport to be a candidate in international trade, enterprises bear to implement ISO9001 even under the circumstance that they do not understand the value of ISO9001. This not only violates the basic requirements of ISO9001: 2000 but also leads to employee¡¦s careless attitude about the practice. The prevalence of different evaluation tools such as Key Performance Index (KPI), Management By Objectives (MBO) and etc. tells the story that enterprise nowadays puts performance before anything. However, most enterprises fail to integrate the similar concepts behind evaluation indexes and ISO like quality goal, quality review, human resource, and process management and treat each index as an independent system. This has caused enterprises serious waste and cost. Also, there is always lacked an objective evaluation method between human resource development and performance management. Enterprise performance management system is often criticized for its isolation from the real competitive environment and helplessness in staff encouragement or efficiency improvement. The fact that the current quality system and performance management system cannot reflect customer¡¦s voice, the main source of profit improvement, undermines the benefits of system implementation and is against the expectation of persistent development. Through in-depth interview, this study specifies how enterprises in LCD industry implement performance evaluation and ISO9001: 2000 and clarify the correlation between these internal systems and the disconnection occurred. Based on bibliography and theory study, then conduct to an integrated operation system that has two major parts, including mixed-construction and process management. The process oriented management flow could easy to connect the performance evaluation gap between enterprise and customer concern. The mixed-construction could meet the performance evaluation request of LCD industry which is customers¡¦ satisfaction¡Bspeed and competence. Through this kind of operation system, enterprise could easy to put customer concern in the enterprise internal system and also could achieve a closed loop of continuous improvement. That is also called as system synergy. In enterprises operation, cost reduction stands as important as profit seeking. The concept of integration of performance management system and ISO9001¡G2000 quality management system indicated in this research provides a way to meet the targets of performance and cost while promoting employee satisfaction, enterprise competitiveness and customer satisfaction.