Abstract: With the development of modern society, various large-scale engineering projects are increasingly developed, and the engineering cost control has become an intimate part of the project management. In the EPC engineering, the accurate control of the engineering costs is particularly important because it not only involves the financial risks and the ultimate benefits of the project, but also relates to the safety and the sustainable development of the engineering projects. However, in the practical engineering, the complexity of geological conditions often brings challenges to the engineering cost control. Especially in engineering projects with the pile supported foundations, it is often difficult to accurately estimate the effective pile length, which leads to hazards such as exceeding the budget and delaying the project schedule. To solve this problem, this article introduces the software of parametric design, Rhino, and its plugin, Grasshopper, to explore how to use them to estimate and statistically analyze the effective pile length under complex geological conditions.

Key words: Rhino Software, Grasshopper Plugin, Complex Geological Conditions, Effective Pile Length