• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>The art of foundation engineering practice >Effects of Gravels, Cobbles, and Boulders on Drilled Shaft Capacity Cypress Avenue Bridge, Redding, California
【24h】

Effects of Gravels, Cobbles, and Boulders on Drilled Shaft Capacity Cypress Avenue Bridge, Redding, California

机译：碎石，鹅卵石和巨石对加利福尼亚州雷丁赛普拉斯大道桥的轴承载能力的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Drilled shaft capacity computations are routinely performed by geotechnical professionals using the Alpha and Beta methods outlined in the Federal Highway Administration (FHWA) Publication FHWA-IF-99-025. For cohesionless intermediate geomaterials, the analysis relies heavily upon the Standard Penetration Test sampler blowcounts obtained from exploratory borings. In the presence of alluvial gravel, cobble and boulder deposits, such evaluation cannot be reliably performed. This paper presents information obtained from Osterberg Cell load testing of 2.5 meter (98-inch) diameter shafts advanced using the casing oscillator method at the Cypress Avenue Bridge over the Sacramento River in Redding, California. The relationships between side shear transfer, end bearing, and settlement in cobble and boulder rich deposits with various matrix materials and degrees of weathering are demonstrated. The effects of particle dilation in the development of shaft side resistance and zones of higher stress concentration are also discussed. The results of instrumented pile load testing are compared with the results of drilled shaft capacity estimates made using the FHWA methods in an effort to better correlate field performance with analytical methods.
机译：岩土工程师通常使用联邦公路管理局（FHWA）出版物FHWA-IF-99-025中概述的Alpha和Beta方法进行钻探井孔能力的计算。对于无粘性的中间土工材料，分析在很大程度上依赖于从探探钻孔获得的标准渗透测试采样器的击穿次数。在存在冲积砾石，卵石和巨石沉积物的情况下，无法可靠地进行此类评估。本文介绍了通过2.5英寸（98英寸）直径轴的Osterberg Cell载荷测试获得的信息，该载荷使用套管振荡器方法在加利福尼亚州雷丁的萨克拉曼多河上的赛普拉斯大道大桥上进行了推进。证明了在具有各种基质材料的富卵石和巨石沉积物中，侧向剪切传递，端承和沉降之间的关系以及风化程度。还讨论了颗粒膨胀对轴侧阻力和较高应力集中区域发展的影响。将仪器仪表桩载荷测试的结果与使用FHWA方法得出的钻探井眼能力估计的结果进行比较，以更好地将现场性能与分析方法相关联。

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