Physical and numerical modeling of ssi

SSI 的物理和数值建模

• 批准号: 183757-2010
• 负责人: ElNaggar, MHesham
• 金额: $ 5.92万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=545946
• 关键词: Physical; numerical; modeling; ssi

The renewal of Canada's highway infrastructure is necessary to accommodate its expanding economy. Bridge foundations, as part of this initiative, would cost hundreds of millions of dollars and innovative solutions that provide cost efficient, durable and reliable foundation are needed. In addition, energy demand has increased substantially, and is expected to increase at even a higher rate. This soaring demand promoted a worldwide increase in the development of green energy technologies such as wind and solar energy. Most renewable energy projects are situated in remote locations (or offshore) or difficult ground conditions, and/or experience unique loading combinations (i.e. significant lateral and uplift loading), which pose significant challenges for foundation engineers. Furthermore, the upgraded seismic loading included in the national building code of Canada (NBCC 2005) postulates an increased seismic hazard in Canada. Existing structures, including major infrastructure, were designed and constructed prior to these new design guidelines and are still susceptible to earthquake damage. These structures have to adhere to the new seismic loading provisions, and finding innovative efficient retrofitting tools is therefore vital. A number of innovative foundation solutions to address these varying needs will be examined in this research program, including: Composite fibre reinforced polymer (FRP) tapered piles, spun-cast ductile iron tapered piles for infrastructure projects; Hybrid foundation system for wind turbine and solar power farm applications; and Composite FRP-square shaft helical pile; and self drilled micropile systems for seismic applications. The outcome of this program would be efficient construction techniques and reliable design methodologies for these innovative foundations. This research is expected to result in significant technology transfer and economical benefit to Canada.

加拿大公路基础设施的更新是必要的，以适应其不断扩大的经济。 桥梁基础，作为这一举措的一部分，将耗资数亿美元，需要创新的解决方案，提供具有成本效益，耐用和可靠的基础。此外，能源需求大幅度增加，预计将以更高的速度增加。这一需求的飙升推动了全世界对风能和太阳能等绿色能源技术的开发。大多数可再生能源项目位于偏远地区（或海上）或困难的地面条件下，和/或经历独特的荷载组合（即显著的横向和上拔荷载），这对基础工程师提出了重大挑战。 此外，加拿大国家建筑规范（NBCC 2005）中包含的升级地震荷载假定加拿大的地震危险增加。现有结构，包括主要基础设施，是在这些新的设计准则之前设计和建造的，仍然容易受到地震破坏。这些结构必须遵守新的地震荷载规定，因此，寻找创新的高效改造工具至关重要。本研究计划将研究一些创新的基础解决方案，以满足这些不同的需求，包括：复合纤维增强聚合物（FRP）锥形桩，基础设施项目的离心铸造球墨铸铁锥形桩;用于风力涡轮机和太阳能发电场应用的混合基础系统;复合FRP方轴螺旋桩;和用于地震应用的自钻微型桩系统。该计划的成果将是这些创新基础的有效施工技术和可靠的设计方法。这项研究有望为加拿大带来重大的技术转让和经济效益。