Cost and schedule comparison and risk analysis for pile foundation systems

桩基础系统的成本和进度比较以及风险分析

• 批准号: 499236-2016
• 负责人: Lu, Ming
• 金额: $ 0.58万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=607282
• 关键词: Cost; schedule; comparison; risk; analysis

A foundation acts as the load transfer media from the superstructure to the underlying soil or rock. It is essential to systematically consider various foundation types and to select the optimum alternative based on the superstructure requirements, the underground conditions, and economy. From the perspective of engineering design, different pile foundation systems can be feasible alternatives to fulfill the same purpose (i.e. satisfying identical loading requirements in identical soil conditions). However, a potential foundation solution may appear to be the most economical from a pure design standpoint, but may not be the most economical when limitations on construction activities are fully considered. Through the previous Engage Grant, PI's construction engineering & management (CEM) research group at the University of Alberta has successfully collaborated with Almita in cost and schedule comparison of each of the three foundation systems named above, keeping technical performance constant. Though substantial outputs had been generated from the Engage Grant, these factors as identified justify the need of extended research in order to evaluate cost, duration and risks of piling foundation construction systems in a comprehensive, sophisticated fashion in collaboration with Almita. Upon realization of the objectives in a follow-up Engagement Plus grant, the U of A research team will lend effective decision-support to Almita in the form of a technical report summarizing all the findings and a computer simulation tool along with Excel spreadsheet interface for helical pile engineering and construction in the near future.

基础充当从上部结构到下面的土壤或岩石的荷载传递介质。必须系统地考虑各种基础类型，并根据上部结构要求、地下条件和经济性选择最佳方案。从工程设计的角度来看，不同的桩基体系可以作为实现相同目的（即在相同土壤条件下满足相同荷载要求）的可行替代方案。然而，从纯粹设计的角度来看，潜在的基础解决方案可能看起来是最经济的，但当充分考虑施工活动的限制时可能不是最经济的。通过之前的 Engage Grant，PI 位于阿尔伯塔大学的建筑工程与管理 (CEM) 研究小组与 Almita 成功合作，对上述三个基础系统的成本和进度进行了比较，从而保持了技术性能的稳定。尽管参与赠款已经产生了大量成果，但所确定的这些因素证明需要进行扩展研究，以便与 Almita 合作以全面、复杂的方式评估打桩基础施工系统的成本、持续时间和风险。在实现后续 Engagement Plus 拨款的目标后，阿尔米塔大学研究团队将以总结所有研究结果的技术报告和计算机模拟工具以及 Excel 电子表格界面的形式为 Almita 提供有效的决策支持。螺旋桩工程和施工在不久的将来。