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

基于工程设计与施工方法的桩基础系统造价分析

• 批准号: 479602-2015
• 负责人: Lu, Ming
• 金额: $ 1.75万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=580173
• 关键词: Cost; Analyses; Pile; Foundation; Systems

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.

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。这是 系统地考虑各种基础类型并根据情况选择最佳替代方案至关重要 上部结构要求、地下条件和经济性。从工程的角度来看， 不同的桩基础系统可以是实现相同目的的可行替代方案（即满足相同的要求） 相同土壤条件下的负载要求），但在可施工性、成本和进度方面明显不同。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，但也可能 当充分考虑建筑活动的限制时，这并不是最经济的。关键的 决策过程应包括对（1）当地工程的可用性和 施工专业知识，(2) 材料和设备的可用性，(3) 环境限制，(4) 成本 两种材料，(5) 材料搬运和人员安装，以及 (6) 其他相关的下部结构成本 包括桩帽或下部上部结构连接。 作为岩土基础设计者和施工者，Almita 感兴趣的是 (1) 优化基础 设计以满足客户对三个变量的期望：技术性能、成本和进度； (2) 一个 基于三种不同基础系统模拟的比较分析：螺旋桩、打入钢 桩和混凝土。 PI 大学建筑工程与管理 (CEM) 研究小组 阿尔伯塔省将聘请 Almita 开展这项研究，旨在比较这三者中的每一个的成本和进度 上述基础系统，保持技术性能恒定。科学框架整合 工程设计和施工管理将得到发展和应用。完成后 研究任务，一份最终技术报告，概述了使用一种基础系统相对于另一种基础系统的优势 将产生有关成本和进度效率的信息。