内嵌碳纤维增强塑料板条混凝土梁斜截面承载力计算  

The loading-bearing capacity calculation of oblique section in concrete beams strengthened with near-surface mounted CFRP laminates

作　　者：成香莉[1] 任振华[1] 徐平[1] 曾宪桃[1] 

机构地区：[1]河南理工大学土木工程学院,河南焦作454003

出　　处：《河南理工大学学报（自然科学版）》2008年第2期228-233,共6页Journal of Henan Polytechnic University（Natural Science）

基　　金：河南省高校杰出科研人才创新工程项目(2007KYCZ006)

摘　　要：作者按照正常配筋浇筑了13根钢筋混凝土梁,在部分梁弯剪段侧立面保护层内按照不同尺寸开槽,在槽内嵌入碳纤维增强塑料板条（carbon fiber reinforced plastic,简称CFRP）,用专用树脂对槽道进行充填,并对这些梁进行弯曲试验.研究表明,内嵌碳纤维增强塑料板条加固的混凝土梁与对比梁相比,其极限承载力提高了18.8%-45.8%.本文在试验研究的基础上并结合国内外研究成果,提出了内嵌纤维增强塑料加固混凝土梁斜截面承载力的实用计算公式,并与试验结果对比,两者吻合较好.Based on the normal steel reinforcement configuration, thirteen concrete beams have been placed. After opening different dimension grooves in the concrete - protection of the side and vertical section of some flexuous and sheared parts in beams, inserting CFRP （carbon fiber reinforced plastic） laminates in the grooves and filling epoxy resin into the grooves, some flexural experiments have been done on beams. The result indicates that compared with the unstrengthened beams, the loading - bearing capacity of the beams strengthened with near - surface monnted CFRP increased from 18.8% to 45.8%. Based on the experiments and researches at home and abroad, the service calculation formula of the loading - bearing capacity of oblique section of concrete beams strengthened with near - surface mounted CFRP laminates is put forward, and both fit better with the test results.

关 键 词：内嵌 碳纤维增强塑料板条 混凝土梁 剪切特性 

分 类 号：TU37[建筑科学—结构工程] TU746.3