| 陈小刚,吴文清,姚伟发,钱培舒.斜拉桥索塔锚固区环形预应力束孔道摩阻试验研究[J].现代交通技术,2008,(5): |
| 斜拉桥索塔锚固区环形预应力束孔道摩阻试验研究 |
| Experiment Research on the Friction Resistance of the Ring Prestressed Steel Bundle in the Anchorage Zone of Cable-stayed Bridge Tower |
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| DOI： |
| 中文关键词: 索塔 锚固区 环形预应力束 摩阻系数 伸长值 初始张拉控制应力 |
| 英文关键词:cable tower anchorage zone ring prestressed steel bundle coefficient of frictional resistance extension initial stress for tension control |
| 基金项目: |
| 陈小刚 吴文清 姚伟发 钱培舒 |
| 东南大学交通学院,江苏南京210096 |
| 摘要点击次数: 4349 |
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| 中文摘要: |
| 通过某公路立交桥索塔锚固区节段足尺模型试验，实测索塔锚固区内环形预应力钢束的摩阻系数、应力损失率和伸长量等数据，与设计数据进行校核、修正，并确定实际的环形预应力束张拉的摩阻系数以及初始张拉控制应力值．使环形预应力束张拉伸长值控制在合理范围。 |
| 英文摘要: |
| Through full-scale model test of stay cable anchorage zones in pylons of a highway interchanges,many data are tested such as the coefficient of frictional resistance,bias coefficient,stress loss and extension.These data are compared with design data and then are modified. The coefficient of frictional resistance and the actual initial stress for tension control of the ring prestressed steel bundle is confirmed. At the same time,the extension of the ring prestressed steel bundle is controlled at the reasonab... |
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