[1]何夕平,杨 波,张运帅,等.碳纤维布加固某开裂现浇楼板效果分析[J].西安建筑科技大学学报:自然科学版,2013,45(01):51-57.[doi:10.15986/j.1006-7930.2013.01.008]
　HE Xi-ping,YANG Bo,ZHANG Yun-shuai,et al.Effect analysis of a cracking cast-in-place floor strengthened by CFRP sheets[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2013,45(01):51-57.[doi:10.15986/j.1006-7930.2013.01.008]
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碳纤维布加固某开裂现浇楼板效果分析()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
45
期数:
2013年01期
页码:
51-57
栏目:
出版日期:
2013-02-28

文章信息/Info

Title:
Effect analysis of a cracking cast-in-place floor strengthened by CFRP sheets
文章编号:
1006-7930(2013)01-0051-07
作者:
何夕平1; 杨 波1; 张运帅1; 王 彪2
(1.安徽建筑工业学院,安徽 合肥 230022;2.安徽四惠大成有限责任公司,安徽 合肥 230011)
Author(s):
HE Xi-ping1; YANG Bo1; ZHANG Yun-shuai1; WANG Biao2
(1.Anhui University of Architecture, Hefei 230022, P. R. China; 2.Anhui Sihui Dacheng Company Limited, Hefei 230011,P. R. China)
关键词:
碳纤维布; 现浇楼板; 裂缝; 挠度; ANSYS
Keywords:
carbon fiber-reinforced polymer sheets;  cast-in-place floor;  crack;  deflection;  ANSYS
分类号:
TU375.1
DOI:
10.15986/j.1006-7930.2013.01.008
文献标志码:
A
摘要:
某建材大市场C1楼现浇楼板普遍产生贯穿性裂缝,部分裂缝宽度达到0.35mm,严重影响到了建筑物的使用功能.结合工程实际使用材料,通过计算说明了由于混凝土收缩变形过大而产生裂缝的必然性.在对裂缝进行检测和原因分析的基础上,确定采用碳纤维布进行加固.选取二层顶板(4-1/4)/(A-B)轴的楼板裂缝作为研究对象,先理论计算出碳纤维布加固该开裂楼板的抗弯刚度,从而计算出板的跨中挠度.最后利用ANSYS有限元软件,建立满足正常使用功能的楼板模型并施加荷载,得到板跨中挠度的模拟值.并与理论计算值、规范值对比分析,说明加固后的楼板变形满足正常使用要求
Abstract:
A variety of penetrating cracks occurred in cast-in-place floor of C1building in a building material market. Some crack mouth opening displacements have reached 0.35mm especially. The application of the building has been seriously affected by these cracks. In order to explain how these cracks come about by, combining the engineering materials actually used in this project, this article analyzes the reason of cracks by computing the shrinkage deformation of concrete and explains have they are caused by shrinkage of concrete. Based on the cracks inspection and cause analysis, an alternative scheme that CFRP sheets can be used to strengthen the floor. Besides, taking the second floor((4-1/4)/(A-B)axis)strengthened by CFRP sheets of C1building as the research object, is proposed the values of flexural rigidity and midspan deflection are calculated. Finally, applying the finite element software ANSYS to model building of the floor achieving a function of natural service, the numerical simulation values of mid-span deflections are obtained. Meanwhile, the theoretical calculation values are compared with the numerical simulation values and the code values. The comparison results show that theoretical calculation values are smaller than theoretical calculation values and code values. A conclusion is drawn to indicate that the floor deformation can meets the normal demands of application.

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备注/Memo

备注/Memo:
收稿日期:2012-08-01 修改稿日期:2013-01-07
基金项目:国家科技支撑计划课题资助项目(2011BAJ03B04);安徽建筑工业学院自然科学基金资助项目(KF2009.10)
作者简介:何夕平(1963-),男,安徽无为人,副教授,硕士生导师,主要从事现代工程施工技术研究.
更新日期/Last Update: 2015-10-05