工程專案排程管控導入關鍵鏈管理方法之研究

A Study on Construction Project Management Using Critical Chain

涂瑞欣(Jui-Shin Tu)

指導教授 ： 曾惠斌

國立臺灣大學/工學院/土木工程學研究所/碩士(2008年)

https://doi.org/10.6342/NTU.2008.00876

摘要

目前在專案時程管理中，主要以1950年出現的要徑法(Critical Path Method)來管理，但工程進度落後情況仍比比皆是。在1997年，Goldratt博士配合其早期的限制理論(Theory of Constraints)，提出了關鍵鏈(Critical Chain)的排程方法，以提升專案管理的效率，被譽為專案管理技術上重大的突破。
然而關鍵鏈這嶄新的管理方法卻鮮少為國內工程專案所使用，可能原因是其理論中大幅縮減作業時間而被認為不適用於作業項目變化複雜的營建工程。為探索關鍵鏈導入實際工程專案時之可行性，本研究以一簡單之建築工程為基礎，使用輔助關鍵鏈之Project Scheduler 8軟體，進行比較分析要徑法與關鍵鏈之排程；並針對重點作業所需求的時程對營造廠、顧問公司、及業主發放問卷，取得排除可能的安全時間後，評估作業實際工作時間，再結合模糊統計法找出各作業最小可能工作時間，將之運用於關鍵鏈排程，獲得適合該建築工程專案之作業時間縮減比率。
研究發現基礎工程、外牆及內部裝修工程等，不僅有縮減空間，且能順利引用關鍵鏈方式達到一般趕工時程進度。本研究也建立一套有別於傳統要徑法等方法作業時間縮減策略之流程，期望能協助工程專案導入關鍵鏈管理，進而解決作業時間縮減比率問題之參考流程。

關鍵字

工程專案管理 ； 關鍵鏈 ； 活動時間縮減 ； 模糊統計

並列摘要

In the Project Management nowadays, Critical Path Method has been the main managing method used here. However, Doctor Goldratt revealed the blind spot of Critical Path Method and, based on his early work, the Theory of Constraints, proposed a new concept for project management, known as Critical Chain.
Nevertheless the Critical Chain Scheduling Method hasn’t been wildly used in domestic engineering projects. It may because the 50% reduction of duration estimates or the uncertainties of buffer calculation and buffer management that can hardly be applied in real cases. This study adduces a simple architect construction project, and uses the software assisted to CCSM, Project Scheduler 8, analyzes its results, then designs, and distributes the questionnaires. Also by applying the Fuzzy Statistics, the study learnt the minimum time that could spend in some important activities; moreover, to ascertain the ratio of reduction of these activities in the case.
Since CCSM hasn’t been wildly used around the construction projects, this study builds up a process to acquire the ratio of reduction of duration estimates, hoping to support construction management while leading-in CCSM.

並列關鍵字

Project Management ； Critical Chain Scheduling Method ； Fuzzy Statistics

參考文獻

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