结构工程师2025，Vol.41Issue(6)：75-81,7.DOI:10.15935/j.cnki.jggcs.202506.0008
新旧混凝土叠合面抗剪强度预测
Prediction of Shear Strength of New and Old Concrete Laminated Surface
丁丽荣 1储杨 2刘华曦 2潘钻峰2
作者信息
- 1. 中国公路工程咨询集团有限公司,北京 100089
- 2. 同济大学土木工程防灾减灾全国重点实验室,上海 200092
- 折叠
摘要
Abstract
In the connection of prefabricated concrete structures and the reinforcement of existing structures,the shear behavior of the interface between new and old concrete directly governs structural safety and integrity.Current methods for predicting shear capacity often rely on simplified roughness classifications or single-parameter analyses,which fail to fully account for the coupled effects of multiple factors.To address this,a multi-parameter prediction model based on a BP neural network is proposed in this study,which comprehensively considers factors such as the strength of old and new concrete,surface treatment methods,roughness magnitude,normal stress,interface reinforcement ratio,and loading mode.The model was trained and validated using 270 sets of experimental data.The results demonstrate that the model exhibits high predictive accuracy and reliability,providing an effective tool for evaluating the shear capacity of concrete laminated surfaces in practical engineering applications.关键词
新旧混凝土/叠合面/抗剪承载力/BP神经网络/预测Key words
new and old concrete/laminated surface/shear bearing capacity/BP neural network/prediction分类
建筑与水利引用本文复制引用
丁丽荣,储杨,刘华曦,潘钻峰..新旧混凝土叠合面抗剪强度预测[J].结构工程师,2025,41(6):75-81,7.
