Cost Analyses of Pile Foundation Systems based on Engineering Design and Construction Method

基础充当从上部结构到下层土壤或岩石的荷载传递介质。它是 必须系统地考虑各种基础类型，并根据 上层建筑要求、地下条件和经济性。从工程学的角度来看， 不同的桩基系统可以是实现相同目的的可行方案(即满足相同的 相同土壤条件下的装载要求)，但在可施工性、成本和进度方面有明显不同。一个 从纯粹的设计角度来看，潜在的基础解决方案似乎是最经济的，但可能 当充分考虑到施工活动的限制时，不是最经济的。关键人物 决策过程应包括对(1)当地工程的可用性和 建筑专业知识，(2)材料和设备的可用性，(3)环境限制，(4) 两种材料，(5)材料搬运和机组人员安装，(6)其他相关的基础设施费用 包括承台或下部上部结构连接。 作为一名土工基础设计者和施工者，Almita对(1)优化基础感兴趣 设计满足客户对三个变量的期望：技术性能、成本和进度；(2)a 三种不同基础体系：螺旋桩、打入钢的模拟对比分析 桩和混凝土。美国加州大学建筑工程与管理(CEM)研究小组 艾伯塔省将委托Almita启动这项研究，旨在对这三个项目的成本和进度进行比较 以上命名的基础系统，保持技术性能不变。一种科学的整合框架 工程设计和施工管理将得到开发和应用。在完成 研究作业，概述使用一种地基系统相对于另一种地基系统的好处的最终技术报告 在成本和进度方面，将产生效率。

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 subsurface conditions, and economy. From the perspective of engineering, different pile foundation systems can be feasible alternatives to fulfill the same purpose (i.e. satisfying identical loading requirements in identical soil conditions), but markedly differ in constructability, cost and schedule. A potential foundation solution may appear to be the most economical from a pure design perspective, but may not be the most economical when limitations on construction activities are fully considered. The critical decision process should entail comprehensive evaluation on (1) the availability of local engineering and construction expertise, (2) availability of materials and equipment, (3) environmental limitations, (4) costs for both materials, (5) materials handling and crew installation, and (6) other associated substructure costs including pile cap or sub-superstructure connections. As a geotechnical foundation designer and constructor, Almita is interested in (1) optimizing foundation designs to meet client expectations on three variables: technical performance, cost, and schedule; (2) a comparative analysis based on the simulation of three different foundation systems: helical piles, driven steel piles and concrete. The PI's construction engineering & management (CEM) research group at the University of Alberta will engage Almita to launch the research aimed at cost and schedule comparison of each of the three foundation systems named above, keeping technical performance constant. A scientific framework integrating engineering design and construction management will be developed and applied. Upon completion of the research assignment, a final technical report outlining the benefits of using one foundation system over another in regards to cost and schedule efficiency will be produced.