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玻璃纤维复合材料(简称GFRP材料)凭借质量轻、强度高以及耐腐蚀等优势,在工程中得到越来越广泛的应用。其连接性能是结构设计的重要一环,实际工程中常采用钢套管连接形式。对于Φ200×10规格钢套管的连接性能进行研究,为了避免“尺寸效应”的影响,试件均为足尺模型。通过试验装置,对其轴心抗压与抗拉性能进行研究,得到了GFRP复合钢套管的荷载-位移曲线和应变分布规律,分析了其极限承载力、变形能力和破坏形式的影响因素。
Glass fiber composite materials (referred to as GFRP material) by virtue of light weight, high strength and corrosion resistance and other advantages, in the project has been more widely used. The connection performance is an important part of the structural design, the actual project often use steel casing connection. For the connection performance of Φ200 × 10 steel casing, the specimens are full-scale models in order to avoid the influence of “size effect”. The axial compressive and tensile properties of the GFRP composite steel casing were studied by means of the test device. The load-displacement curves and strain distributions of the GFRP composite steel casing were obtained. The factors affecting the ultimate bearing capacity, deformation capacity and failure mode were analyzed.