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Fe Simulation And Experimental Analysis On Bearing Capacity Of Runway Strips

机译:跑道带承载力的Fe模拟与实验分析

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The aim of this study was to establish reasonable values for both maximum deflection and minimum bearing capacity of runway strips, conforming to regulations specified by the Italian Civil Aviation Authority (ENAC), to implement in the design and reabilitation of the runway strips of the Cagliari Airport in Italy. The ENAC regulations state that the bearing capacity of runway strips must be designed based on the characteristics of both the critical aircraft and emergency vehicles which may transit on the runway. However, it does not specify a minimum bearing capacity value. Therefore, based on the instructions given by ENAC regulations, required values for both maximum deflection and minimum bearing capacity were determined using a Finite Element Method (FEM) simulation to design runway strips. In particular, a non-linear analysis was conducted with FEM to simulate the mechanical behavior of granular soil under high instantaneous pressures. The paper explains how the theoretical analysis was conducted, which materials were tested, and how runway strips were designed. Before the construction, extensive on-site testing was performed to validate the results obtained with the theoretical analysis. In particular, 122 series of single and double cycle bearing capacity plate and Light Weight Dropping (LWD) tests were performed. Results from these tests were used to define critical areas and to estimate any degree of correlation between the bearing capacity plate and LWD tests. The theoretical and experimental analyses carried out on this case study have enabled a design criterion and facilitated the rebuilding of the emergency strips of the Cagliari Airport in Italy, conforming to regulations specified by the ENAC. The results obtained with the theoretical analyses were validated by performing extensive on-site testing.
机译:这项研究的目的是建立跑道带的最大挠度和最小承载力的合理值,并符合意大利民航局(ENAC)规定的规定,以实现卡利亚里跑道带的设计和改型意大利的机场。 ENAC法规规定,跑道条的承载能力必须根据可能在跑道上通过的关键飞机和紧急车辆的特性来设计。但是,它没有指定最小承载能力值。因此,根据ENAC法规给出的说明,使用有限元方法(FEM)模拟来设计跑道带,从而确定最大挠度和最小承载能力的所需值。特别是,用有限元法进行了非线性分析,以模拟高瞬时压力下颗粒状土壤的力学行为。本文解释了如何进行理论分析,测试了哪些材料以及如何设计跑道跑道。在施工之前,进行了广泛的现场测试以验证理论分析所获得的结果。特别是,进行了122系列的单轮和双轮承载板和轻量化试验(LWD)。这些测试的结果用于定义关键区域,并估计承载力板和LWD测试之间的任何相关程度。在此案例研究中进行的理论和实验分析已经制定了设计准则,并促进了意大利卡利亚里机场紧急跑道的重建,符合ENAC的规定。通过进行大量的现场测试,验证了通过理论分析获得的结果。

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