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（東南大學(xué)混凝土及預(yù)應(yīng)力混凝土結(jié)構(gòu)教育部重點(diǎn)實(shí)驗(yàn)室， 南京 210096）

［摘要］纖維增強(qiáng)水泥基復(fù)合材料（PVA-ECC）是一種新型高性能建筑材料，具有假應(yīng)變硬化和超高的韌性等特性，將其用于工程結(jié)構(gòu)可大幅提升結(jié)構(gòu)的承載力、延性和耗能性能。而鋼筋與PVA-ECC之間的粘結(jié)性能是影響鋼筋增強(qiáng)PVA-ECC結(jié)構(gòu)力學(xué)性能的關(guān)鍵因素。通過鋼筋與PVA-ECC拉拔試驗(yàn)研究了鋼筋與PVA-ECC的粘結(jié)破壞機(jī)理和破壞形態(tài)，分析了鋼筋類型、錨固長度、保護(hù)層厚度和配箍率等因素對(duì)鋼筋與PVA-ECC粘結(jié)性能的影響。

［關(guān)鍵詞］纖維增強(qiáng)水泥基復(fù)合材料； 鋼筋； 拉拔試驗(yàn)； 粘結(jié)性能

中圖分類號(hào)：TU375，TU502文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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

作者簡介：米淵，碩士研究生，Email：myxf1014@163.com。