华南理工大学学报（自然科学版）2025，Vol.53Issue(12)：71-81,11.DOI:10.12141/j.issn.1000-565X.250287
再生部件混凝土预制楼板的受力性能分析
Analysis of Mechanical Performance of Precast Concrete Floor Slabs Containing Recycled Components
摘要
Abstract
The direct utilization of recycled components derived from meticulously demolished old concrete mem-bers in new structural elements holds significant potential for saving materials,reducing energy consumption,and lowering carbon emissions.However,the performance of such new members requires systematic investigation for quantitative understanding.As a preliminary exploration,this paper investigated the flexural performance of pre-cast concrete floor slabs containing recycled components.Flexural experiments were conducted under both sagging and hogging moments.The influences of factors such as the surface treatment methods of recycled components and the strength difference between new and old concrete on the sagging moment flexural performance was examined.Furthermore,the effect of the configuration of locally added connecting reinforcement on the hogging moment fle-xural performance was studied.A calculation methods for the flexural capacity of these slabs was proposed.The re-sults show that:(1)the sagging moment flexural capacity of the recycled-component slabs is significantly higher than that of monolithic cast reference slabs;(2)Different surface treatment methods for the recycled components generally had a limited impact on the sagging moment capacity;(3)the addition of local connecting reinforcement at the ends of the recycled components notably enhanced the hogging moment flexural capacity;for practical enginee-ring,the configuration using directly laid lapped reinforcement is recommended.The results of the proposed me-thods for calculating flexural bearing capacities are generally conservative.关键词
混凝土/再生部件/预制楼板/受弯性能/承载力Key words
concrete/recycled component/precast floor slab/flexural performance/bearing capacity分类
建筑与水利引用本文复制引用
李彦,吴波,郑书雅,吴翔..再生部件混凝土预制楼板的受力性能分析[J].华南理工大学学报（自然科学版）,2025,53(12):71-81,11.基金项目
国家重点研发计划项目(2023YFC3807303) （2023YFC3807303）
国家自然科学基金重点项目(52338006)Supported by the National Key Research and Development Program of China(2023YFC3807303)and the Na-tional Natural Science Foundation of China(52338006) （52338006）
