（东南大学混凝土及预应力混凝土结构教育部重点实验室， 南京 210096）

［摘要］纤维增强水泥基复合材料（PVA-ECC）是一种新型高性能建筑材料，具有假应变硬化和超高的韧性等特性，将其用于工程结构可大幅提升结构的承载力、延性和耗能性能。而钢筋与PVA-ECC之间的粘结性能是影响钢筋增强PVA-ECC结构力学性能的关键因素。通过钢筋与PVA-ECC拉拔试验研究了钢筋与PVA-ECC的粘结破坏机理和破坏形态，分析了钢筋类型、锚固长度、保护层厚度和配箍率等因素对钢筋与PVA-ECC粘结性能的影响。

［关键词］纤维增强水泥基复合材料； 钢筋； 拉拔试验； 粘结性能

中图分类号：TU375，TU502文献标识码：A文章编号：1002-848X(2016)15-0069-05

Experimental study on bond behavior between steel bars and  patterned vertical alignment engineered cementitious composite

Mi Yuan, Pan Jinlong, Zhou Qingshan

(Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China)

Abstract:Patterned vertical alignment engineered cementitious composite (PVA-ECC) is a new high-performance building material with features of pseudo strain hardening behavior and super high toughness. Application of PVA-ECC in engineering projects can improve load bearing capacity, ductility and energy dissipation ability of structures. The bond behavior between steel bars and PVA-ECC is the key factor affecting mechanical properties of the reinforced PVA-ECC members or structures. Pullout tests were conducted to study the bond failure mechanism and mode between steel bars and PVA-ECC. The influences of various parameters, such as the steel type, embedment length, thickness of protective layer and stirrup ratio, on the bond behaviors between steel bars and PVA-ECC were comprehensively analyzed.

Keywords:pateerned vertical alignment engineered cementitious composite (PVA-ECC); steel bar; pullout test; bond property

作者简介：米渊，硕士研究生，Email：myxf1014@163.com。