格构腹板增强轻木夹芯复合材料桥面板的制备与受弯分析

发布时间：2019-07-21 12:29

【摘要】：提出了一种新型格构腹板增强轻木夹芯复合材料桥面板,这种面板具有轻质高强、耐腐蚀、易拼装等特点,可用于军事舟桥等组合结构桥梁领域。该新型桥面板的复合材料面层、格构腹板与芯材在模具内通过真空导入工艺整体一次成型,利用格构腹板提高面层与芯材的整体性,可更大程度地发挥新型桥面板的受力性能。基于复合材料夹层结构经典理论,对该桥面板在典型轮式车辆和履带式车辆荷载作用下的性能进行了受力分析。结果表明:该桥面板的刚度满足设计要求;纤维面层正应力和轻木芯材剪应力均满足强度要求;与原同尺寸军用桥面板相比,减重57%。
[Abstract]:A new type of lattice web reinforced lightweight wood sandwich composite bridge deck is proposed, which has the characteristics of light weight, high strength, corrosion resistance and easy assembly, and can be used in the field of military boat bridge and other composite structure bridges. The composite surface layer of the new bridge deck, the lattice web plate and the core material are formed in the die by vacuum introduction process, and the mechanical properties of the new bridge deck can be brought into full play by using the lattice web to improve the integrity of the surface layer and the core material. Based on the classical theory of composite sandwich structure, the performance of the bridge deck under the load of typical wheeled vehicles and crawler vehicles is analyzed. The results show that the stiffness of the bridge deck meets the design requirements, the normal stress of the fiber surface layer and the shear stress of the light wood core material meet the strength requirements, and compared with the original military bridge deck of the same size, the weight is reduced by 57%.
【作者单位】：南京工业大学土木工程学院;
【基金】：国家自然科学基金重点项目(51238003);国家自然科学基金面上项目(51578285) 江苏省自然科学基金(BK20161545)
【分类号】：TB332

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