湖南大学学报（自然科学版）2024，Vol.51Issue(11)：53-64,12.DOI:10.16339/j.cnki.hdxbzkb.2024107
超高延性混凝土加固砌体的抗弯性能试验研究与理论计算
Experimental Study and Theoretical Calculationon Flexural Properties of Masonry Structures Strengthened by Ultra-high Ductile Concrete(UHDC)
摘要
Abstract
To improve the flexural properties and reduce the risk of brittle out-of-plane failure in masonry walls,ultra-high ductile concrete(UHDC)layers were introduced to strengthen the masonry members.Four-point bending tests were carried out on seven strengthened masonry members in this study.The failure mode,bearing capacity and deformability of the specimens were comparably analyzed.The experimental results indicated that ductile failure modes were achieved in masonry specimens strengthened with single-and double-sided UHDC layers,and the strengthened specimen showed ductile bending failure modes.The UHDC layers had satisfied restraint effect on masonry flexural members,which can significantly improve their flexural capacity and deformability.The increase of the thickness of UHDC layer could effectively improve the ultimate bearing capacity.The contribution of UHDC layer in tension zone to the flexural bearing capacity was less than that of UHDC layer in compression zone.Finally,the formulas of calculating the flexural capacity of masonry flexural members strengthened with single-and double-sided UHDC layers were individually proposed,providing a design basis for masonry flexural members strengthened with UHDC.关键词
超高延性混凝土/砌体结构/加固/延性/抗弯承载力Key words
ultra-high ductile concrete(UHDC)/masonry structure/strengthening/ductility/flexural capacity分类
建筑与水利引用本文复制引用
蒋芳明,董方园,余江滔,王汉鹏..超高延性混凝土加固砌体的抗弯性能试验研究与理论计算[J].湖南大学学报（自然科学版）,2024,51(11):53-64,12.基金项目
国家自然科学基金资助项目(51978504),National Natural Science Foundation of China(51978504) （51978504）
