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| 大直径预应力钢筒混凝土管道裂缝产生机理与防治研究 | |
| 引用本文： | 张成军,陈尧隆,李 宇.大直径预应力钢筒混凝土管道裂缝产生机理与防治研究[J].西北农林科技大学学报(社会科学版),2005,33(7):93-98. |
| 作者姓名： | 张成军 陈尧隆 李 宇 |
| 作者单位： | 1. 西安理工大学,水利水电学院,陕西,西安,710048;山西省水利水电科学研究院,山西,太原,030002 2. 西安理工大学,水利水电学院,陕西,西安,710048 3. 西安理工大学,水利水电学院,陕西,西安,710048;西北农林科技大学,水利与建筑工程学院,陕西,杨凌,712100 4. 山西省水利水电科学研究院,山西,太原,030002 |
| 摘 要： | 根据混凝土开裂机理,对管道裂缝产生原因、机制及防治措施进行了分析。结果认为,干缩变形、温度变形、结构应力等是管道裂缝产生的主要原因;不同部位裂缝的产生机制及防治措施不尽相同,虽然有些裂缝难以避免,但可通过有效防治使其处于微裂状态,而不致影响管道寿命。 |
| 关 键 词： | 钢筒混凝土管道 管道裂缝 机理分析 预应力 |
| 文章编号： | 1671-9387(2005)07-0093-06 |
| 收稿时间： | 2004/10/28 0:00:00 |
| 修稿时间： | 2004年10月28 |
Study on mechanism and prevention of cracking in prestressed concrete cylinder pipe of large diameter |
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| ZHANG Cheng-jun,CHEN Yao-long,LI Yu,WANG Jian.Study on mechanism and prevention of cracking in prestressed concrete cylinder pipe of large diameter[J].Journal of Northwest Sci-Tech Univ of Agr and,2005,33(7):93-98. | |
| Authors: | ZHANG Cheng-jun CHEN Yao-long LI Yu WANG Jian |
| Institution: | 1 College of Water Resource and Hydroelectricity Engineering,Xi’an University of Technology,Xi’an,Shaanxi 710048,China;2 Shanxi Institute of Water Resources and Hydropower Research,Taiyuan,Shanxi 030002,China;3 College of Water Resources and Architectural Engineering,Northwest A & F University,Yangling,Shaanxi 712100,China) |
| Abstract: | According to the mechanism of cracking in general concrete structures,the reasons,mechanisms and preventing methods of cracking in PCCP were analyzed in this paper and some conclusions were drawn.Firstly,the reasons of cracking in PCCP included shrinkage,temperature effects and structural stress effects.Secondly,with its different locations and layers in PCCP,the cracks had different mechanisms,different widths,and different preventing methods.Finally,although some cracks could not be prevented completely,they could be controlled effectively,hence in a state of micro-cracking. |
| Keywords: | PCCP cracking of pipe mechamism analysis prestress |
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