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（1 安陽(yáng)工學(xué)院土木與建筑工程學(xué)院， 安陽(yáng) 455000； 2 安陽(yáng)工學(xué)院結(jié)構(gòu)重點(diǎn)實(shí)驗(yàn)室,  安陽(yáng) 455000; 3 西安建筑科技大學(xué)土木工程學(xué)院, 西安 710055)

［摘要］對(duì)一種新型高強(qiáng)鋼筋密肋梁混凝土樓蓋的面內(nèi)剛度進(jìn)行了試驗(yàn)研究，分析了新型密肋梁樓蓋在各個(gè)水平荷載作用下對(duì)水平力分配，同時(shí)分析新型密肋梁樓蓋的變形能力。通過試驗(yàn)，驗(yàn)證樓蓋剛度面內(nèi)剛度無限大的假定，高強(qiáng)鋼筋對(duì)樓蓋的面內(nèi)剛度影響有限，并給出了相應(yīng)建議，可為新型密肋梁樓蓋體系的設(shè)計(jì)和應(yīng)用提供參考。

［關(guān)鍵詞］高強(qiáng)鋼筋； 密肋梁樓蓋； 平面內(nèi)剛度； 水平剪力分配

中圖分類號(hào)：TU398-7文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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