| 混凝土双向密肋装配整体式空心楼盖刚度研究 |
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| 引用本文： | 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. |
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| 作者姓名： | 周绪红 陈伟 吴方伯 黄海林 李骥原 |
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| 作者单位： | 1.湖南大学 土木工程学院， 湖南长沙 410082； 2.兰州大学 土木工程与力学学院， 甘肃兰州 730000；3.湖南高岭建设集团股份有限公司， 湖南长沙 410153 |
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| 基金项目： | 国家自然科学基金项目(50978090); 国家“十一五”科技支撑计划项目(2006BAJ02B07) |
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| 摘 要： | 针对目前混凝土双向密肋装配整体式空心楼盖刚度和变形计算存在较大误差的问题，对混凝土双向密肋现浇空心楼盖单元、混凝土双向密肋装配整体式空心楼盖单元及无顶板和底板的混凝土肋梁单元进行了静载试验研究。试验结果表明，混凝土双向密肋装配整体式空心楼盖单元的顶板及侧板与现浇混凝土密肋梁粘结良好，预制顶板和底板对试验单元的刚度有明显的贡献，装配整体式单元的受力性能与现浇单元相似。根据试验数据及有限元模拟结果验证了装配整体式单元顶板剪力滞后效应的存在，在此基础上提出了考虑预制顶板和底板作用的楼盖截面刚度计算方法。从双向密肋楼盖的计算方法--查表法和交叉梁法出发，对混凝土双向密肋装配整体式空心楼盖的弹性刚度及支座边界条件进行修正，提出更为精确合理的刚度和变形计算方法。用本文提出的计算方法对已有的足尺楼盖试件进行计算，得出的计算结果与试验结果吻合良好。
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| 关 键 词： | 刚度 剪力滞后 装配整体式 双向密肋楼盖 |
Study on stiffness of assembled monolithic concrete hollow floor with two-way ribs |
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| ZHOU Xuhong,CHEN Wei,WU Fangbo,HUANG Hailin,LI Jiyuan.Study on stiffness of assembled monolithic concrete hollow floor with two-way ribs[J].Journal of Building Structures,2011,32(9):75-83. |
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| Authors: | ZHOU Xuhong CHEN Wei WU Fangbo HUANG Hailin LI Jiyuan |
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| Affiliation: | 1.College of Civil Engineering, Hunan University, Changsha 410082, China;;
2. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China;;
3.Hunan Gaolin Construction Group Stock Limited Company, Changsha 410153, China; |
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| 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... |
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| Keywords: | concrete waffle slab assembled monolithic shear lag rigidity |
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