| 寒潮突袭对混凝土薄板温度应力的影响 |
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| 引用本文： | 沈超明,杨绘峰,杭振园.寒潮突袭对混凝土薄板温度应力的影响[J].四川建筑科学研究,2012,38(4):62-65,89. |
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| 作者姓名： | 沈超明 杨绘峰 杭振园 |
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| 作者单位： | 1. 江苏科技大学船舶与海洋工程学院,江苏镇江,212003
2. 江苏科技大学土木工程与建筑学院,江苏镇江,212003 |
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| 基金项目： | 江苏高校优势学科建设工程资助项目 |
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| 摘 要： | 混凝土薄板在遭受寒潮作用时会因为结构温度变化不均匀而产生较大的温度应力,甚至出现温度裂缝,从而影响结构的安全,这种现象在早龄期的混凝土薄板结构上尤为明显。文章以早龄期现浇楼盖为例,在考虑龄期对混凝土弹性模量及强度的影响的基础上,利用ANSYS有限元软件对不同尺寸的现浇楼盖分别在不同龄期遭遇寒潮突袭时的温度应力情况进行了数值模拟,得出了相应的结论,并给出了降低寒潮突袭影响的建议。
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| 关 键 词： | 寒潮突袭 早龄期 混凝土薄板 温度应力 ANSYS |
Effect of cold wave sudden attack on temperature stress of concretes thin plates |
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| SHEN Chaoming
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YANG Huifeng
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HANG Zhenyuan.Effect of cold wave sudden attack on temperature stress of concretes thin plates[J].Building Science Research of Sichuan,2012,38(4):62-65,89. |
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| Authors: | SHEN Chaoming YANG Huifeng HANG Zhenyuan |
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| Affiliation: | 2 ( 1. School of Naval Arehiteeture and Ocean Engineering, Jiangsu University of Seienee and Technology,Zhenjiang 212003,China; 2. School of Civil and Arehlteeture Englneering,Jiangsu University of Science and Technology,Zhenjiang 212003, China) |
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| Abstract: | When concrete thin plate suffers cold wave, it will produce great temperature stress as a result of the structure＇s uneven temperature variations, and even sometimes there would be some temperature cracks on the surface of concrete thin plate;and then these cracks would influence security of the structure. This phenomenon is very obvious in concrete thin plate at early ages. On the base of considering the effect of ages on concrete elastic modulus and intensity, this paper had a research about the early age cast-in-place floor, and got the corresponding conclusions and proposals to reduce the influence of cold wave by simulating the temperature stress of cast-in-place floors in different sizes at the disparate ages by ANSYS. |
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| Keywords: | cold wave sudden attack early age concrete thin plate temperature stress ANSYS |
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