珊瑚混凝土梁抗弯性能试验研究  

Flexural properties of coral concrete beam

作　　者：胡乔[1] 陈小兵[1] 阳涛[1] 丁一[1] 陈文永[1] 

机构地区：[1]中冶建筑研究总院,北京100088

出　　处：《混凝土》2017年第4期21-24,28,共5页Concrete

基　　金：中冶建筑研究总院珊重大课题"FRP-混凝土组合结构关键技术研究"(JAF2014Kj02);"珊瑚骨料混凝土制备及应用性能研究"(JAF2014kj03);国家发改委新材料研发及产业化专项项目"GQ4522级以上碳纤维符合材料研发产业化项目"

摘　　要：珊瑚混凝土是以珊瑚砂石为骨料,采用海水拌和的新型海洋混凝土,对于推进我国海洋工程建设有重大作用。通过与普通混凝土构件进行对比,研究了钢筋珊瑚混凝土梁和CFRP筋珊瑚混凝土梁的抗弯性能,结果显示钢筋珊瑚混凝土梁与普通钢筋混凝土梁的开裂、变形、抗弯承载力等性能均接近,具有良好的工程适用性。CFRP筋和珊瑚混凝土具有良好的协同工作性能,CFRP筋珊瑚混凝土梁的抗弯承载力比按现行FRP规范计算的结果低5%~10%。现有普通混凝土和FRP规范进行适当调整后可用于钢筋珊瑚混凝土和CFRP珊瑚混凝土的设计计算。Coral concrete is a new kind of marine concrete that consist of coral gravel as coarse aggregate, coral sand as fine aggregate, and mixed by sea water.By comparing with the commom concrete elemnts, we studied the flexure performance of steel-coral concrete beam and carbon bar-coral concrete beam.It shows that steel-coral concrete beam has similar properties as commom concrete beam in cracking, deformation and bending resistance, thus suitalbe for engineering.Coral concrete has a good coordinate performance with carbon bar, the bending resistance of carbon bar-coral concrete beam is 5%-10% lower than computed by related standard of FRP elements.Cur- rent standard for common concrete elements and FRP-concrete elements can be used for steel/carbon bar-coral concrete elements after ap- propriate adjustment.

关 键 词：珊瑚混凝土 CFRP筋 梁 抗弯承载力 

分 类 号：TU528.01[建筑科学—建筑技术科学]