• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>American Power Conference >THE USE OF IMPACT-ECHO AND SPECTRAL-ANALYSIS-OF-SURFACE-WAVES METHODS FOR THE CONCRETE INVESTIGATION OF ROGERS DAM SPILLWAY STRUCTURE
【24h】

THE USE OF IMPACT-ECHO AND SPECTRAL-ANALYSIS-OF-SURFACE-WAVES METHODS FOR THE CONCRETE INVESTIGATION OF ROGERS DAM SPILLWAY STRUCTURE

机译：利用冲击回波和光谱分析 - 波浪探测罗杰斯坝溢洪道结构的具体研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

1. IE and SASW NDT methods were employed to investigate the concrete conditions of the Rogers Hydro Station's concrete spillway. The results showed that the surface gunite/shotcrete on the majority of the piers and walls was delaminated from the interior sound concrete and that there was a significant amount of sound concrete in the interior cores of the piers and walls. 2. The NDT results correspond well in general trend with those of the concrete coring performed in 1988 and 1991; however, because of the greatly varying concrete conditions and additional concrete deterioration since 1988 when the majority of the horizontal cores were taken, a direct point-per-point comparison cannot be made. 3. The NDT results correspond well with the as-found conditions on Pier 1 and on the east abutment wall except that the deep degradation (SASW results) conditions on the west face of Pier 1 did not exist. The highly deteriorated nature of the concrete could have contributed to the lower wave velocities. The cracking conditions below the demolition line were not verified. Some of the IE echoes could have been caused by the boundary conditions, in view of the highly fractured nature of the surface concrete/shotcrete and the very low strength and deteriorated concrete at the construction joints.
机译：1. IE和SASW NDT方法探讨罗杰斯水电站混凝土溢洪道的具体条件。结果表明，大多数码头和墙壁上的表面发泡/喷射器从内部声音混凝土中划分，并且在码头和墙壁的内部核心中有大量的声音混凝土。 2. NDT结果与1988年和1991年的混凝土芯片的趋势相当良好;然而，由于自1988年以来的大部分水平核心自1988年，因此额外的混凝土条件和额外的混凝土恶化，因此不能进行直接的点比较。 3. NDT结果与码头1和东邻壁上的标准条件相处不错，除了不存在码头1的西面上的深层退化（SASW结果）条件之外。混凝土的高度劣化性质可能导致较低的波速。不验证拆卸线以下的裂缝条件。考虑到表面混凝土/喷射器的高度骨折性质和施工接头处的混凝土非常低的强度和劣化的混凝土，一些IE回波可能是由边界条件引起的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号