Detail Nonlinear analysis of the load transfer mechanism in rigid pavement systems considering various interface conditions Bibliografi Author: Eom, In-Soo ; Parsons, I. Dennis (Advisor) Topik: ENGINEERING; CIVIL Bahasa: (EN )    ISBN: 0-599-56213-7     Penerbit: UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN     Tahun Terbit: 1999     Jenis: Theses - Dissertation Fulltext: 9953009.pdf (0.0B; 0 download) Abstract Load transfer mechanisms in jointed rigid pavement systems are an important factor when pavement systems are designed and analyzed because pavement systems have longitudinal and transverse joints to allow movements of the slab. The pavement system naturally requires load transfer devices to bridge these gaps. Therefore, load transfer mechanism in pavement systems can be defined as how much load is transferred from loaded side of the slab to adjacent unloaded side of the slab. This mechanism is also directly related to the failure, serviceability and lifespan of the rigid pavements because the two most important design factors, maximum stress and maximum deflection, are greatly dependent on load transfer behavior. The load transfer mechanism has been difficult to numerically analyze and to analytically explain. The problem associated with various interface conditions thus becomes much more complex although various mechanics have been introduced to clearly explain load transfer mechanisms resting on a multi-layered system. Since different interface conditions affect the behavior of the load transfer, interface condition effects should be included in the analysis of jointed rigid pavement system to explain behaviors of the rigid pavement system clearly. The main objective of this study is to develop an analytical model that captures all the essential mechanics present in load transfer mechanisms and to investigate the interaction between load transfer behaviors and various interface conditions by analyzing jointed rigid airport pavement systems. To achieve this goal, two and three dimensional non-linear finite element models for the analysis of load transfer mechanisms were developed without resorting to an empirical modeling technique. Various conventional definitions of load transfer efficiency, such as the efficiency based on displacement, stress and applied force, were studied. This study is the first to define load transfer efficiency based on the load transferred through the load transfer device. The results presented in this research provide an explanation for the load transfer mechanism across a joint system when different interface conditions are considered. The proposed load transfer efficiency was found to be a more useful measure of joint performance. It captured the variations in efficiency that accompany changing geometries and interface conditions. Therefore, this efficiency measure should be useful when performing parameter studies directed towards obtaining optimum designs. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Lihat Sejarah Pengadaan  Konversi Metadata   Kembali

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