原文传递
ASSESSMENT OF 100-YEAR-OLD FOUNDATION SYSTEM TO MEET CURRENT RETROFIT LOAD DEMANDS.
| 题名： | ASSESSMENT OF 100-YEAR-OLD FOUNDATION SYSTEM TO MEET CURRENT RETROFIT LOAD DEMANDS. |
| 作者： | McCabe-WM; Felice-CW |
| 关键词： | Deflection-; Earthquake-resistant-design; Geotechnical-engineering; Glacial-soils; Granular-soils; Lateral-loads; Liquefaction-; Minipiles-; Mitigation-measures; Pile-foundations; Piles-Supports; Railroad-stations; Retrofitting-; Sand-; Seattle-Washington; Settlement-Structures; Steel-pipe; Timber- |
| 摘要： | Results are presented of a geotechnical investigation and foundation analysis as a component of the seismic retrofit to the Amtrak King Street Station in Seattle, Washington. The purpose of this effort was to assess the condition of the existing pile foundation, to quantify the foundation response to revised seismic loads, and to provide recommendations for retrofitting of the foundation. King Street Station is a one- to three-story brick masonry structure with a 12-story clock tower. The building was constructed in 1906 in the area of a reclaimed tide flat. The foundation for the structure consists of timber piles; however, no information was available on the length of the piles or whether they were treated with a preservative. The approximate length of the piles was established at 9.7 m using ground-penetrating radar. A core sample obtained from one of the timber piles showed them to be untreated timber and in good condition. The subsurface investigation revealed a liquefiable granular fill soil in the upper 6 m underlain by medium-dense marine sands overlying dense glacial soils. An engineering analysis of the expected performance of the piles during the design seismic event showed that the piles could settle approximately 100 to 355 mm because of liquefaction of the marine sand layer and that the deflection of the piles under lateral loading was substantially in excess of the static loads. Steel pipe minipiles were recommended as a mitigation measure. |
| 总页数： | Transportation Research Record. 2000. (1736) pp41-48 (1 Phot., 7 Fig., 14 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- Existing Whole-house Solutions Case Study: Deep Energy Retrofit of 1910 House, Portland, Oregon.
- Operational Experiences with Flexible Transit Services. A Synthesis of Transit Practice.
- Corporate Culture as the Driver of Transit Leadership Practices. A Synthesis of Transit Practice.
- Corporate Culture as the Driver of Transit Leadership Practices. A Synthesis of Transit Practice.
- MARAD 2004: Maritime Administration Annual Report to Congress, Fiscal Year 2004.
- Strengthening of Existing Inverted-T Bent Caps: Design Recommendations and Examples.
检索历史
应用推荐
