- 摘 要
-
（1 長沙理工大學(xué)土木工程學(xué)院， 長沙 410114； 2 中機國際工程設(shè)計研究院有限責(zé)任公司， 長沙 410007； 3 長春新星宇建筑安裝有限責(zé)任公司， 長春 130000）
［摘要］GB 50003規(guī)范采用基于梁-墻模型試驗結(jié)果的混凝土梁與砌體墻之間相互約束作用的分析方法，對無筋砌體墻進行受壓承載力計算。由于墻體內(nèi)沒有內(nèi)拱作用，且樓板的剛度比梁小很多，有必要研究板-墻相互約束作用。采用經(jīng)試驗結(jié)果驗證的有限元分析方法，研究了墻頂豎向壓應(yīng)力、板-墻剛度比和支承長度對砌體墻約束彎矩的影響，提出了基于框架結(jié)構(gòu)計算簡圖的彎矩修正系數(shù)的砌體墻設(shè)計方法，并將該方法的計算結(jié)果與GB 50003規(guī)范、EC6規(guī)范的計算結(jié)果進行了對比分析。結(jié)果表明，板-墻約束彎矩隨墻頂豎向壓應(yīng)力增加而增加，隨板-墻相對線剛度增加而降低，板的支承長度影響較??；墻頂豎向壓應(yīng)力很小時，GB 50003規(guī)范的計算結(jié)果與EC6規(guī)范以及所提出方法有較大誤差；所提出方法的計算結(jié)果介于GB 50003規(guī)范與EC6規(guī)范之間。
［關(guān)鍵詞］砌體結(jié)構(gòu)； 受壓構(gòu)件； 板墻約束作用； 約束彎矩； 有限元分析
中圖分類號：TU365文獻標識碼：A文章編號：1002-848X(2020)14-0131-06
Study on interaction between slabs and walls in masonry structure buildings
LIANG Jianguo1, JIANG Mengxiao2, WAN Jubo3, LIU Yaping1
（1 School of Civil Engineering， Changsha University of Science & Technology， Changsha 410114， China；2 China Machinery International Engineering Design & Research Institute Co., Ltd.， Changsha 410007， China；3 Changchun New Xingyu Construction and Installation Co., Ltd.， Changchun 130000, China）
Abstract:The analysis method of the interaction between RC beam and masonry wall based on the results of beam-wall test models was used for the compressive capacity calculation of unreinforced masonry wall in the code of GB 50003. It is necessary to study the interaction between floor slabs and masonry walls because there is no internal arch in the wall and the stiffness of the floor slab is much smaller than that of the beam. The influence of the wall upper compressive stress, the stiffness ratio of slab to wall and the supporting length on the constraining moment of masonry walls was analyzed using the finite element analysis method verified by the test results. The design method of masonry wall based on the moment reduction factor of the frame structure was proposed, and the calculation results of the method was compared with the calculation results by codes of GB 50003 and EC6. The results show that the constraining moment of the slab-wall increases with the increase of the wall upper compressive stress, decreasing with the increase of the relative linear stiffness ratio of the slab-wall，and the supporting length of the slab is less affected. The calculation result by the code of GB 50003 had a large error with those by the code of EC6 and the proposed method when the wall upper compressive stress was small. The calculation results of the proposed method were between codes of GB 50003 and EC6.
Keywords:masonry structure; compressive element; interaction between slab and wall; constraining moment; finite element analysis
*國家自然科學(xué)基金面上項目（51678067）。
作者簡介：梁建國,碩士，教授，碩士生導(dǎo)師,Email:jgliang1963@163.com。
