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纤维增强复合材料(FRP)编织网结构主要由编织网面和内外环梁组成,将FRP板条按一定规律编织形成网面,通过内环梁对网面进行平面外整体张拉,使结构具有一定的平面外刚度,可以承受竖向荷载。通过2个1/10比例的FRP编织网结构模型,研究了FRP编织网结构的编织方法、施工方法和成形中的力学特性,对施工中平面编织、平面外整体张拉的过程进行了模拟验证。结果表明:采用编号法和规律法可实现网面的编织施工;通过控制板条预张拉应力和控制整体变形的平面外整体张拉可实现结构的成形控制;在施工过程中FRP编织网结构表现出明显的几何非线性特征,结构刚度随着竖向张拉位移的增加而增大;相对于板条的预张拉应力控制,平面外整体张拉对于结构成形控制起决定性作用。
FRP braided mesh structure is mainly composed of braided mesh and inner and outer annular beams. The FRP slats are woven according to a certain rule to form a mesh surface, and the mesh surface is entirely tensioned by the inner ring beam so that the structure has A certain degree of out-of-plane stiffness, can withstand vertical load. Through two 1/10 FRP braided mesh structure model, the weaving method, construction method and mechanical properties of FRP braided mesh structure were studied, and the process of flat braiding and out-of-plane integral tensioning during construction was simulated . The results show that the numerical method and the law method can be used to realize the braiding construction of the mesh. The control of prestressing tension of the slats and overall out-of-plane tensioning of the overall deformation can be used to control the forming of the structure. During the construction process, Showing obvious geometric nonlinearity. The stiffness of the structure increases with the increase of the vertical tensile displacement. Compared with the prestressing stress control of the slats, the integral out-of-plane tensioning plays a decisive role in the structural forming control.