（1 安阳工学院土木与建筑工程学院， 安阳 455000； 2 安阳工学院结构重点实验室,  安阳 455000; 3 西安建筑科技大学土木工程学院, 西安 710055)

［摘要］对一种新型高强钢筋密肋梁混凝土楼盖的面内刚度进行了试验研究，分析了新型密肋梁楼盖在各个水平荷载作用下对水平力分配，同时分析新型密肋梁楼盖的变形能力。通过试验，验证楼盖刚度面内刚度无限大的假定，高强钢筋对楼盖的面内刚度影响有限，并给出了相应建议，可为新型密肋梁楼盖体系的设计和应用提供参考。

［关键词］高强钢筋； 密肋梁楼盖； 平面内刚度； 水平剪力分配

中图分类号：TU398-7文献标识码：A文章编号：1002-848X(2019)21-0104-04

Experimental study on in-plane stiffness of high strength steel rebar ribbed beam concrete floor

Zheng Xianchao1，2， Zhang Ling1， Zhao Jun1， Li Qingning3

(1 Architectural Engineering Institute, Anyang Institute of Technology, Anyang 455000, China;2 Key Structure Laboratory of Anyang Institute of Technology, Anyang 455000, China;3 School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China)

Abstract:The in-plane stiffness of a new type of high strength steel rebar ribbed beam concrete slab was tested. The horizontal force distribution of the new ribbed beam  floor under various horizontal loads was analyzed, and the deformation ability of the new ribbed beam floor was analyzed. The experiments verified that the in-plane stiffness of the floor is infinitely large and the influence of high strength steel rebar on the in-plane stiffness of the floor is limited. Corresponding suggestions were given, providing reference for the design and application of the new ribbed beam floor system.

Keywords:high strength steel rebar; ribbed beam floor; in-plane stiffness; horizontal shear distribution