建筑结构学报2011，Vol.32Issue(9)：75-83,9.
混凝土双向密肋装配整体式空心楼盖刚度研究
Study on stiffness of assembled monolithic concrete hollow floor with two-way ribs
摘要
Abstract
In response to the problem that the calculation results for the stiffness and deformation of the assembled monolithic concrete hollow floor with two-way ribs are not accurate enough,this paper made a study on the static load tests of three slab elements,which were a cast-in-situ concrete hollow slab element with two-way ribs,an assembled monolithic slab element and a ribbed beams slab element.The test results indicate that the prefabricated top and side plates of the hollow box have a good bond with cast-in-situ concrete ribs.The roof and floor can make an obvious contribution to the stiffness of the slab element.The mechanical performance of the cast-in-situ concrete hollow slab element with two-way ribs is similar to that of the assembled monolithic slab element.The phenomenon that the shear lag exists in the prefabricated monolithic top plate is confirmed according to the results of test and finite element analysis.A computational method considering the effect of prefabricated top and bottom plates was proposed for the calculation of sectional stiffness of floor slabs.The elastic stiffness and boundary support condition of the new type slabs were revised based on the look-up table method and intersecting beam method of the concrete waffle slabs.Then a new computational method for the calculation of stiffness and deformation which can yield more accurate and reasonable results was proposed.The calculation results of the test specimens using the proposed method agree well with the test results.关键词
双向密肋楼盖/装配整体式/剪力滞后/刚度Key words
concrete waffle slab/assembled monolithic/shear lag/rigidity分类
建筑与水利引用本文复制引用
周绪红,陈伟,吴方伯,黄海林,李骥原..混凝土双向密肋装配整体式空心楼盖刚度研究[J].建筑结构学报,2011,32(9):75-83,9.基金项目
国家自然科学基金项目 （）
国家“十一五”科技支撑计划项目 （）
