Fiber reinforced composite material spiral stirrup and method thereof: Fid-Bau Portal

Fiber reinforced composite material spiral stirrup and method thereof

XUE WEICHEN / HU XIANG

The invention belongs to the technical field of civil engineering, and particularly relates to a fiber reinforced composite material spiral stirrup and a method thereof. The spiral stirrup is made of a corrosion-resistant fiber reinforced composite material, and the cross section of a single limb of the spiral stirrup is circular or rectangular. The FRP spiral stirrup is composed of continuous FRP rib rectangular coils. The FRP spiral stirrup is similar to a spring, can be axially stretched and compressed, and is convenient to store and transport and bind on site. By utilizing the longitudinal stretchability and compression characteristic of the FRP spiral stirrup, the angles between the two opposite sides of the rectangular coils and the axis can be adjusted according to needs so as to adapt to the shear states of different components, and the material strength of the FRP stirrup is fully exerted. The fiber reinforced composite material spiral stirrup has the characteristics of being convenient to produce and form, accurate in size, capable of saving materials, convenient to construct and the like. The durability of a concrete structure can be effectively improved, and the fiber reinforced composite material spiral stirrup is suitable for coastal areas and areas where a large amount of snow melting salt is used in the north, and has wide application prospects.

本申请属于土木工程技术领域，具体涉及一种纤维增强复合材料螺旋箍筋及方法。该螺旋箍筋由耐腐蚀的纤维增强复合材料制成，其单肢横截面为圆形或矩形。所述的FRP螺旋箍筋由连续的FRP筋矩形线圈组成。所述的FRP螺旋箍筋类似于弹簧，可以轴向拉伸和压缩，便于储运和现场绑扎。利用FRP螺旋箍筋纵向可拉伸和压缩特性，其矩形线圈的两对边与轴线的角度可根据需要进行调整，以适应不同构件的受剪状态，充分发挥FRP箍筋的材料强度。本申请具有生产成型方便、尺寸精准、节省材料和便于施工等特点。可有效提升混凝土结构的耐久性，适用于沿海地区以及北方大量使用化雪盐的地区，具有广阔的应用前景。

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