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利用海砂和海水配制混凝土,用FRP海砂海水混凝土代替传统钢筋混凝土用于海洋及港口土建工程,对于海洋经济发展具有重要意义.文章通过制作8根GFRP筋海砂海水混凝土梁试件,进行压力试验以了解GFRP筋海砂海水混凝土梁的受力性能.结果表明,随着配筋率的增加,GFRP筋海砂海水混凝土承载力增加;与GFRP筋普通混凝土相比,粘结性能要差;试验验证了平截面假定在GFRP海砂海水混凝土结构中仍适用;GFRP海砂海水混凝土破坏前有明显征兆,裂缝开展充分,挠度非常大.因此,在设计时通过控制荷载和配筋率,可以保证GFRP筋海砂海水混凝土的延性.
The use of sea sand and seawater to prepare concrete and replace the traditional reinforced concrete with seawater and marine FRP for marine and port civil engineering is of great significance to the development of marine economy.By making eight samples of GFRP tendon- Pressure test to understand the mechanical properties of GFRP tendons and sea sand reinforced concrete beams.The results show that with the increase of the reinforcement ratio, the bearing capacity of GFRP tendon seawater seawater concrete increases, and the bonding performance is worse than that of ordinary GFRP tendons The tests confirm that the cross-sectional assumption is still applicable in the GFRP sea-sand seawater concrete structure. The GFRP sea-sand seawater concrete has obvious signs of failure before the fracture is fully developed and the deflection is very large. Therefore, by controlling the load and the reinforcement ratio, Can guarantee the ductility of GFRP sea sand seawater concrete.