期刊论文

Experimental study on mechanical behaviour of glulam timber beams reinforced with BFRP

中文

中南林业科技大学学报

1673-923X

2019

39

3

107-113

10.14067/j.cnki.1673-923x.2019.03.017

国家国际科技合作专项(2014DFA53120) 现代木结构工程材制造及应用技术湖南省工程实验室开放基金项目(HELFMTS1705).

本校为第一机构

为有效提高胶合木梁的抗弯刚度,以东北落叶松为基材,制作了6组(1组未加筋和5组加筋)、每组3根共18根胶合木试验梁,分别对BFRP筋增强胶合木梁和纯胶合木梁的受力性能、破坏形态和极限承载力进行了试验研究,测试了荷载、挠度、应变、裂缝的发生以及发展状况等.同时,根据各试验梁的破坏形态,对比分析了BFRP筋增强胶合木梁和纯胶合木梁的破坏机理及不同配筋率情况下BFRP筋增强胶合木梁的抗弯刚度与极限承载力.结果表明:1)BFRP筋增强胶合木梁和纯胶合木梁的破坏形态类似,均呈现受拉脆性破坏、受拉延性破坏和受压延性破坏三种破坏形态;即配筋率小于0.77％ 时,BFRP筋增强胶合木梁为受拉脆性破坏,配筋率...

In order to effectively improve the flexural rigidity of glulam timber beams, 6 groups (1 group unreinforced and 5 groups reinforced, 3 beams in each group, a total of 18 beams) of glulam wood test beams were made with Larix gmelinii in northeast of China as the base materials. The mechanical property, failure mode and ultimate bearing capacity of BFRP reinforced glulam timber beams and unreinforced glulam timber beams were studied respectively. The load, deflection, strain, crack occurrence and development were tested. At the same time, the failure mechanism of BFRP reinforced glulam beams an...