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| 预应力现浇混凝土管式空心楼盖承载性能试验研究 | |
| 引用本文： | 杨晓华,周朝阳,陈海涛. 预应力现浇混凝土管式空心楼盖承载性能试验研究[J]. 工业建筑, 2015, 0(1): 80-84,151 |
| 作者姓名： | 杨晓华 周朝阳 陈海涛 |
| 作者单位： | 1. 湖南工业大学土木工程学院，湖南株洲 412008; 中南大学土木建筑学院，长沙 410075 2. 中南大学土木建筑学院,长沙,410075 3. 湖南工业大学土木工程学院,湖南株洲,412008 |
| 基金项目： | 湖南省科技厅计划项目(2001TP4004-2);湖南省教育厅基金项目(09C315) |
| 摘 要： | 为研究无黏结预应力现浇混凝土管式空心楼盖的受力性能,制作了一个1/4缩尺比例的无黏结预应力现浇混凝土管式空心板柱结构试验模型,通过在试验模型管式空心楼盖上施加竖向均布荷载的试验表明,该楼盖结构具有一定的承载能力,在荷载作用下各区格板发生竖向位移后,表现形状为"碗形",最大挠度发生在管式空心楼盖各区格板的跨中。有限元计算分析结果进一步说明,无黏结预应力现浇混凝土管式空心楼盖由于空心管的平行布置而呈现正交各向异性,在平行布管方向,楼板的连续性遭到破坏,楼板刚度削弱程度较大。在平行布管方向和垂直布管方向,无黏结预应力管式空心楼盖的变形仍可按连续板跨考虑。 |
| 关 键 词： | 无黏结预应力 现浇混凝土管式空心楼盖 受力性能 挠度 |
EXPERIMENT RESEARCH ON BEARING BEHAVIOR OF POST-TENSIONED UNBONDED PRESTRESSED CONCRETE HOLLOW FLAT FLOOR |
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| Yang Xiaohua , Zhou Chaoyang , Chen Haitao. EXPERIMENT RESEARCH ON BEARING BEHAVIOR OF POST-TENSIONED UNBONDED PRESTRESSED CONCRETE HOLLOW FLAT FLOOR[J]. Industrial Construction, 2015, 0(1): 80-84,151 | |
| Authors: | Yang Xiaohua Zhou Chaoyang Chen Haitao |
| Affiliation: | Yang Xiaohua;Zhou Chaoyang;Chen Haitao;School of Civil Engineering,Hunan University of Technology;School of Civil Engineering ,Central South University; |
| Abstract: | In order to study the mechanical behaviors of post-tensioned unbonded prestressed concrete hollow flat floors,a 1 /4 scale post-tensioned unbonded prestressed reinforced concrete hollow slab-column structure model was made and test under the uniformly distributed load on the plate was done. The test results showed that the floor had a certain load carrying capacity. The deflection of concrete hollow flat floor by vertical load was a ‘bowl'shape. The point of maximan displacement was in the middle of concrete hollow flat floor. By means of finite element analysis methods,the calculation results showed that post-tensioned unbonded prestressed concrete hollow flat floor existed anisotropy with parallel circular-tubes. In parallel tube direction,the continuity of plate was destructed and the stiffness of the plate was decreased greatly. The plate deformation could still be regarded as continuous cross-plate in parallel tube directions and in vertical tube directions. |
| Keywords: | post-tensioned unbonded prestress concrete hollow flat floor mechanical behaviors deflection |
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