Deep Foundation Technologies for Infrastructure Development

加拿大目前正面临着处理基础设施老化的巨大挑战，我们60%的公共基础设施的使用年限超过40年。这些关键的基础设施由具有相当经济价值的不同类型的基金会提供支持。因此，迫切需要新的高效基础技术来支持新的基础设施，并升级和延长现有基础设施的寿命。这项研究的主要目标是开发新的深层基础系统和产品，以最大限度地减少对环境的影响，并为建筑公司、业主和基础设施运营商节省资金。本研究项目将调查各种基础设施项目的创新地基在各种环境和人为负荷下的性能。它将涉及所调查基础系统的现场和实验测量，这将证明所提出的创新基础和产品的可行性和卓越性能。此外，实验测量和观察将用于校准/核实分析和数值模型，这些模型可用于设计和评价所检查的基础技术的性能特征。提出的研究计划包括三个研究方向，研究三种不同类型基础设施的基础系统。这些研究方向涉及施工、分析和设计问题，包括不同的荷载条件、施工技术和材料、不同基础体系的响应特性。公路基础设施大容量深基础***公路桥梁基础承受较大的重力、交通和环境荷载，需要采用承载能力较大的基础体系。本文将为此目的研究两种创新的桩基础解决方案，它们以较低的成本提供大容量。电信和输电塔基础***电信/输电塔和风力发电机组往往建在偏远和难以进入的地点，对其基础施加复杂的荷载条件，其特点是侧向力和弯矩大。将研究两种创新技术，以提高此类应用中微桩基础的抗侧向和抗弯能力。***石油管道、发电/石化装置要求基础能够快速安装和加载，并能承受动载荷。本文将对两种高效基础系统的动态响应进行研究，这两种基础系统具有快速安装和易于在偏远和交通不便的地点安装的优点

Canada is currently facing enormous challenges dealing with the aging of infrastructures, with 60% of our public infrastructure is more than 40 years old. This critical infrastructure is supported by different types of foundations that are of considerable economic value. Hence, there is an urgent need for novel efficient foundation technologies to support new infrastructure and to upgrade and extend the life of existing infrastructure. The main objective of the proposed research is to develop novel deep foundation systems and products that will minimize environmental impact and will save money for construction companies, and owners and operators of this infrastructure. This research program will investigate the performance of innovative foundations for a variety of infrastructure projects subjected to a variety of environmental and man-made loadings. It will involve field and experimental measurements of investigated foundation systems, which will demonstrate the feasibility and superior performance of the proposed innovative foundations and products. In addition, the experimental measurements and observations will be used in calibrating/verifying analytical and numerical models that can be used for the design and evaluation of the performance characteristics of the examined foundation technologies.The proposed research program comprises three research directions that investigate foundation systems for three different types of infrastructure. These research directions deal with construction, analysis and design issues, including different loading conditions, construction techniques and materials, and response characteristics of different foundation systems.***1. Large capacity deep foundations for highway infrastructure***Foundations for highway bridges are subjected to heavy gravitational, traffic and environmental loads, which necessitates utilizing foundation systems that have large load carrying capacity. Two innovative pile foundation solutions that provide large capacity at a reduced cost will be examined for this purpose.***2. Foundations for telecommunication and power transmission towers***Telecommunication/transmission towers and wind turbines are often constructed in remote and difficult access sites, and impose complex loading conditions on their foundations characterized by high lateral forces and bending moments.  Two innovative technologies will be investigated to enhance the lateral and bending resistances of micropiles foundation for such applications.***3. Foundations for vibrating equipment***Oil pipelines, power generation/petrochemical plants require foundations that can be installed and loaded quickly and can withstand dynamic loading. The dynamic response of two efficient foundation systems that offer advantages with regard to fast installation and ease of installation in remote and limited access sites will be examined.**