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杨永奇 《山东交通学院学报》2012,20(2):36-40
应用弹性力学理论分析了粘贴碳纤维加固钢筋混凝土梁前后以及考虑预载作用下加固梁的受弯全过程。计算梁体极限荷载承载力并将计算结果与试验结果进行比较。结果表明,与普通钢筋混凝土梁相比,采用FRP加固的钢筋混凝土梁的强度、刚度、抗裂缝能力、耐久性有明显提高。 相似文献
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论述了地铁车辆玻璃钢头罩与铝合金车体粘接工艺方法,以及制造过程控制,对施工过程中的一些关键项点进行了详细的分析。实践证明,该套粘接工艺方法应用在地铁车辆玻璃钢头罩与铝合金车体粘接是合理的。 相似文献
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In the present paper, the Local Joint Flexibility (LJF) of tubular T/Y-joints retrofitted with Glass Fiber Reinforced Polymer (GFRP) under IPB moment is studied and discussed. For this aim, a finite element (FE) model was generated and verified with the results of available experimental data and parametric formulas. Afterward, a set of 158 finite element (FE) models was created to evaluate the efficacy of the FRP sheets (number, length, and orientation), the brace inclination angle (θ), and the non-dimensional parameters (β, τ, and γ) on the LJF coefficient (fLJF) and the fLJF ratio of the retrofitted to the associated un-retrofitted joint. In the FE models, the efficacy of the weld profile and the contact between the FRP and the steel members (chord, weld, and brace) was considered. Also, analysis of variance (ANOVA) is used to identify the most dominant parameters which affect the fLJF ratios. Results showed that in the retrofitted joints, the increment of the FRP sheet number results in the notable drop of the fLJF. But, the efficacy of the FRP sheet orientation on the fLJF can be ignored. Despite the considerable efficacy of the FRP sheets on the behavior of the tubular joints, there was not any study on the LJF in the joints retrofitted with FRP. Hence, after an extensive parametric study, the results were used to derive a parametric equation for determining the fLJF of T/Y-joints retrofitted with FRP. Moreover, the derived equation was checked according to the UK DoE acceptance criteria. 相似文献
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介绍了自定位防船撞FRP浮箱的结构特点;基于ANSYS/LS-DYNA软件平台,对一艘2000DWT散货船与防撞浮箱正撞和8°斜撞的非线性动力学过程进行了数值仿真研究;分析了能量耗散过程、碰撞力衰减时程以及碰撞区的结构变形与损伤失效过程;为该装置的工程设计与工程实验提供了理论依据。 相似文献
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