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| 体外预应力在混凝土叠合梁抗震加固中的应用研究 | |
| 引用本文： | 孙勇,刘福胜,何风亭,孙明霞,李永超. 体外预应力在混凝土叠合梁抗震加固中的应用研究[J]. 工程抗震与加固改造, 2005, 0(Z1) |
| 作者姓名： | 孙勇 刘福胜 何风亭 孙明霞 李永超 |
| 作者单位： | [1]山东农业大学水利土木工程学院 [2]泰安市交通建筑设计院股份有限公司 [3]山东泰安 |
| 摘 要： | 以泰山凤凰城娱乐中心结构改造为例,介绍了体外预应力在工程加固中的应用。在体外预应力混凝土叠合梁现场加载实验和理论分析基础上,结合无黏结预应力混凝土梁已有的研究成果,同时考虑混凝土叠合构件的二阶段受力特性,给出了体外预应力混凝土叠合梁变形及最大裂缝宽度计算方法。通过与现场实验结果对比,表明该公式计算精度较高,可用于指导同类工程的加固设计。 |
| 关 键 词： | 体外预应力 叠合梁 抗震加固 变形 裂缝宽度 |
Application Research on External Prestressing Acted on Laminated Beams of Concrete in Aseismic Strengthening |
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| Sun Yong,Liu Fu-sheng,He Feng-ting,Sun Ming-xia,Li Yong-chao. Application Research on External Prestressing Acted on Laminated Beams of Concrete in Aseismic Strengthening[J]. Earthquake Resistant Engineering and Retrofitting, 2005, 0(Z1) | |
| Authors: | Sun Yong Liu Fu-sheng He Feng-ting Sun Ming-xia Li Yong-chao |
| Affiliation: | Sun Yong~1,Liu Fu-sheng~1,He Feng-ting~2,Sun Ming-xia~1,Li Yong-chao~1 |
| Abstract: | By the illustratimg of the structure reconstruction of Taishan phoenix amusement center,application of external prestressing in aseismic strengthening is introduced.On the basis of local loaded experiment of external prestressing on laminated beams of concrete and theoretical analysis,we put forward the calculated formula for deformation and maximum crack width,considering the force bearing property of two stages of the laminated elements of concrete and the recent research results for beams of partly prestressed concrete unbounded.Compared with the experimental results,the calculation precision of the formula is highly enough to meet the demand of similar project design. |
| Keywords: | external prestressing laminated beam of concrete aseismic strengthening deformation crack width |
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