| 屋面预应力混凝土双T板端部腹板裂缝原因分析与加固处理 |
| 投稿时间：2021-10-11 修订日期：2021-10-26 点此下载全文 |
| 引用本文：刘之春,刘军宇.屋面预应力混凝土双T板端部腹板裂缝原因分析与加固处理[J].计算机辅助工程,2021,30(4):. |
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| 中文摘要:二零一九年五月实行新版双T板图集前，国内部分预应力混凝土双T板厂房采用的相关标准以地方图集为主，节点细部连接与构造措施较为简单，预应力混凝土双T板在使用的过程中端部产生裂缝的现象较为普遍。针对某工程中单层工业厂房屋面预应力混凝土双T板端部开裂情况，利用有限元软件ABAQUS进行分析，得出双T板在支座端部存在构造不佳、易出现初始裂缝等不利因素。在施工过程中存在未按照构造要求布置的情况，使用过程中温度作用对双T板的影响不容忽略，并针对所存在的问题从构造的角度提出改进措施，对存在问题的已有构件进行加固处理，处理结果良好。 |
| 中文关键词:预应力混凝土 双T板 有限元分析 腹板裂缝 |
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| Cracks on end webs of prestressed concrete double Tee on roof cause analysis and reinforcement treatment |
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| Abstract:Before the implementation of the new version of the double Tee atlas in May 2019, the relevant standards adopted by some domestic prestressed concrete double Tee factories were mainly local atlases. The detailed connection and structural measures of the nodes were simple. The prestressed concrete double Tee The phenomenon of cracks at the end of the board during use is more common. Aiming at the cracking of the prestressed concrete double Tee on the roof of a single-storey industrial plant in a certain project, the finite element software ABAQUS was used to analyze the double Tee at the end of the support, such as poor structure and easy initial cracks. In the construction process, there are situations that are not arranged in accordance with the structural requirements. The effect of temperature on the double T slab during use cannot be ignored. In view of the existing problems, improvement measures are proposed from the perspective of the structure, and the existing components with problems are reinforced. Treatment, the treatment result is good. |
| keywords:prestressed concrete double Tee finite element simulation analysis Web cracks |
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