| 顶管施工中钢管管壁稳定性分析及壁厚的优化 |
| |
| 引用本文： | 赵志峰,邵光辉. 顶管施工中钢管管壁稳定性分析及壁厚的优化[J]. 武汉大学学报(工学版), 2011, 44(4): 481-486 |
| |
| 作者姓名： | 赵志峰 邵光辉 |
| |
| 作者单位： | 南京林业大学土木工程学院,江苏南京,210037 |
| |
| 摘 要： | 顶管施工目前已得到广泛应用,但目前的规范和文献对于管壁稳定性分析及壁厚的选择尚无明确规定.针对这一问题,采用理论分析和数值分析相结合的方法开展研究.通过数值计算可以得到钢管的内力和变形,但无法直接得到壁厚的控制标准.根据数值分析结果,薄壁钢管在土压力作用下的变形具有拱的特点,因此引入材料力学中拱的稳定分析理论,得到了管壁稳定的临界压力计算公式.将临界压力同钢管的实际受力进行比较,即可对不同壁厚下的管壁稳定性进行判断.以某发电厂的引水管设计为实例,对不同壁厚下钢管管壁的稳定性进行了研究,将初始的设计壁厚进行合理优化,显著降低了工程造价.
|
| 关 键 词： | 顶管 数值模拟 稳定性 壁厚 优化 |
Stability analysis of wall stability of steel pipe in pipe-jacking and optimization of proper wall thickness |
| |
| ZHAO Zhifeng,SHAO Guanghui. Stability analysis of wall stability of steel pipe in pipe-jacking and optimization of proper wall thickness[J]. Engineering Journal of Wuhan University, 2011, 44(4): 481-486 |
| |
| Authors: | ZHAO Zhifeng SHAO Guanghui |
| |
| Affiliation: | ZHAO Zhifeng,SHAO Guanghui(College of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China) |
| |
| Abstract: | Pipe jacking method is widely used in the underground construction;but few studies are focused on the pipe wall stability and no specified rule is presented in the codes.According to this situation,theoretical analysis and numerical analysis is applied to the research.Through numerical computation,the inner force and deformation of the steel pipe can be obtained;but the control criterion of wall thickness is still not settled.Based on the result of numerical analysis,the deformation of steel pipe is charact... |
| |
| Keywords: | pipe-jacking numerical simulation stability wall thickness optimization |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
