建筑结构学报2013，Vol.34Issue(6)：143-152,10.
自密实混凝土与钢筋局部黏结性能试验研究
Experiment research on local bond performance between reinforcement and self-compacting concrete
摘要
Abstract
The bond characteristics between self-compacting concrete and reinforcement are worth researching due to material constitution and no need of vibration.The local bond characteristics between self-compacting concrete and reinforcement were analyzed experimentally and test parameters included self-compacting concrete strength and loading pattern.The tests were conducted on ten specimens under monotonic loading and ten specimens under repeated loading,including sixteen self-compacting concrete specimens and four common concrete specimens.Reinforcement of all specimens was pulled out by electro hydraulic servo device.The local bond stress between self-compacting concrete and reinforcement was analyzed including bond stress uneven coefficient and residual bond stress distributions.The bond stress distribution curve shows wavy under repeated while single crest under monotonic load.The bond stress distribution is more uneven with concrete strength increasing but more even with cyclic loading and number of cycles increasing.When each level unloading,the residual bond stress is larger with concrete strength increasing and its distribution range transfers to free end with cyclic load and number increasing.The bond performance between selfcompacting concrete and reinforcement is a little better than normal concrete.Based on the results,the regression equations for local bond stress position function under monotonic loading and repeated loading were obtained and were validated by test results.The regression equations agree with the test results.关键词
自密实混凝土/拉拔试验/局部黏结应力/不均匀系数/位置函数Key words
self-compacting concrete/ pull-out test/ local bond stress/ bond stress uneven coefficient/ position function分类
建筑与水利引用本文复制引用
庄金平,郑建岚..自密实混凝土与钢筋局部黏结性能试验研究[J].建筑结构学报,2013,34(6):143-152,10.基金项目
国家自然科学基金项目(50978060),福建省科技厅项目(2009H0027). （50978060）
