（1 山东大学土建与水利学院， 济南 250061； 2 上海师范大学建筑工程学院， 上海 201400；3上海市隧道工程轨道交通设计研究院， 上海 200235）

［摘要］为了研究不同的钢筋连接方式对预应力混凝土叠合板的抗弯性能的影响，设计并进行了8个预应力混凝土叠合板的抗弯试验。采用足尺模型研究了预制混凝土底板间隙、端部连接钢筋直径、连接方式等因素对预应力混凝土叠合板抗弯性能的影响。结果表明，预应力混凝土叠合板的抗弯性能与预应力混凝土底板间隙、端部连接钢筋直径关系不大，而与连接方式有关；采用传统胡子筋连接的预应力混凝土叠合板的开裂荷载与极限承载力均明显大于采用端部连接钢筋连接的预应力混凝土叠合板，同时采用传统胡子筋连接的预应力混凝土叠合板的抗弯刚度更大，钢筋与混凝土粘结性能更好。试验中预制底板与后浇层混凝土的粘结锚固性能是影响预应力混凝土叠合板抗弯性能的关键因素，实际工程中预制底板表面的粗糙处理是必不可少的。

［关键词］预应力混凝土叠合板； 钢筋间接连接； 抗弯性能

中图分类号：TU378-5文献标识码：A文章编号：1002-848X(2020)02-0061-06

Study on influence of reinforcement connection method on flexural performance of composite slabs

Hou Hetao1, Dai Chunxue1, Wang Wenhao1, Liu Jinwei1, Fang Mingji2， Liu Haining3

(1 School of Civil Engineering, Shandong University, Jinan 250061， China;2 College of Civil Engineering， Shanghai Normal University, Shanghai 201400， China;3 Shanghai Tunnel Engineering & Rail Transit Design and Research Institute, Shanghai 200235, China)

Abstract:In order to study the influence of different reinforcement connection methods on the flexural performance of prestressed concrete composite slabs, flexural tests were conducted on eight groups of prestressed concrete composite slabs. The full-scale model was used to study the influence of the factors such as the gap of the precast concrete bottom floor, the diameter of the end connecting reinforcement and the connection method on the flexural performance of the prestressed concrete composite slab. The results show that the flexural performance of the prestressed concrete composite slab has little to do with the gap of the prestressed concrete bottom floor and the diameter of the end connecting reinforcement, but is related to the connection method; the cracking load and the ultimate bearing capacity of the prestressed concrete composite slab connected with the traditional beard reinforcement are obviously greater than those of the prestressed concrete composite slab connected with the end connecting reinforcement, and the traditional prestressed concrete composite slab connected with the traditional beard reinforcement has larger flexural rigidity and better bond performance between the reinforcement and the concrete. In the test, the bond and anchorage performance of the precast bottom floor and the post-cast layer concrete is the key factor affecting the flexural performance of the prestressed concrete composite slab, and the rough treatment of the surface of the precast bottom floor is essential in the actual project.

Keywords:prestressed concrete composite slab; indirect connection of reinforcement; flexural performance

*国家自然科学基金项目（51508331），山东省自然科学基金项目（ZR2016EEM07）。

作者简介：侯和涛，博士，教授，博士生导师，Email:houhetao@sdu.edu.cn。