RPC预应力T形梁斜截面承载力试验研究  

RPC prestressed T-beam bearing capacity test

作　　者：李蔚[1] 唐爱华[1] 祁凯能[1] 王洪超 吴欣珂[1] 

机构地区：[1]桂林理工大学土木与建筑工程学院,广西桂林541004 [2]上海宝冶集团沈阳建筑有限公司,沈阳110000

出　　处：《河南理工大学学报（自然科学版）》2013年第4期490-495,共6页Journal of Henan Polytechnic University（Natural Science）

基　　金：广西科技攻关项目(0995004);广西建筑工程检测与试验重点实验室项目(11-cx-04)

摘　　要：为了研究活性粉末混凝土T形梁斜截面承载力,制作了3根预应力T形梁进行试验.观测斜裂缝开展与走势并分析梁受力至破坏整个过程,探讨了剪跨比、纵筋率、翼缘宽度、配箍特征值等掺量对剪力的影响.综合考虑各种因素,建立了考虑活性粉末混凝土抗拉强度和钢纤维的拉结应力以及预应力贡献的抗剪计算方法,可供预应力钢筋活性粉末混凝土T形梁设计参考.For the study of inclined section bearing capacity of T-beams of reactive powder concrete,we produced three prestressed T-shaped beam tests,and carried out the tests by observing and analyzing the diagonal cracks and trend and the entire destruction process of the beam.so as to explore the shear span ratio,longitudinal reinforcement ratio,flange width,stirrup characteristic value of ash on the shear.By a comprehensive consideration of various factors,we establish the shear bearing capacity calculation formula which considers the reactive powder concrete tensile strength of steel fiber and Rachel stress as well as the contribution of prestressed concrete.This formula provides a reference for the design of prestressed reinforced T-beams of reactive powder concrete.

关 键 词：活性粉末混凝土 预应力 剪跨比 抗剪承载力 

分 类 号：TU312.1[建筑科学—结构工程] TU317.1