指導教授：王明德臺灣大學：土木工程學研究所蔡奇成Tsai, Chi-ChenChi-ChenTsai2014-11-252018-07-092014-11-252018-07-092014http://ntur.lib.ntu.edu.tw//handle/246246/260786在工程契約的履約階段，最常見的爭議即是遲延的爭議，當遲延爭議發生時，必須利用遲延分析方法以分擔遲延責任歸屬。而浮時擁有權乃公認遲延分析之重要議題，然卻常在遲延分析中之簡單假設下而未做分析。再者，目前實務界多認為浮時擁有權係屬專案，致使履約當事人使用浮時不須付出任何代價，履約當事人即使沒必要也可以使用浮時，此時將會有可能影響浮時於時程管理之功能，且後使用浮時者常需負擔較大之遲延風險。 為解決這些問題，過去許多學者紛紛提出解決之道。本研究旨在建構一個新的，以分配浮時擁有權為基礎之遲延分析方法，以做為事前在契約條款內約定浮時擁有權之參考與在事後做為遲延爭議分析及處理之機制。本研究以要徑風險性與成本效率性二大觀念為基礎，以補充過去方法之不足。在要徑風險性上，係以蒙地卡羅模擬分析，得出各作業相對風險之要徑指數，接續以要徑指數做為分配路徑浮時與遲延責任歸屬之依據。在成本效率性上，係以總成本最低做為浮時分配之依據，以得專案總成本最低之結果。 本研究結果發現，在浮時之分配上，過去方法多以路徑上各工作項目間作業時間之多寡，做為分配浮時之依據，即作業時間愈多，可分配之浮時就愈多。本研究以要徑指數做為分配之依據，換言之，遲延風險越高的作業被分配較多之浮時。另外，過去方法多將浮時平均分配給相關使用者，本研究發現浮時若以平均分配，總成本不一定為最低。最後，在遲延責任歸屬上，過去的方法，未考慮到非要徑上遲延與要徑上遲延責任歸屬之權重問題。本研究所提出之方法，正本溯源回歸到要徑之重要性，可避免當事人即使在要徑上遲延，因該當事人尚擁有非要徑之分配浮時，而不須負擔任何遲延責任的問題。 本研究所建立之專案總成本為基礎之要徑指數遲延分析方法，係為一重新考量浮時之分配與遲延責任歸屬之系統化方法，可用來在契約條款內事前約定浮時使用權利之歸屬之參考與在事後做為遲延爭議分析及處理之機制，亦適用於對浮時擁有權議題認知差異過大之履約當事人。Delay dispute is one of the most common disputes during the execution of constructed project. When a delay dispute occurs, delay analysis must be adopted to attribute responsibility for the delay. Float ownership is recognized as the critical issue in delay analysis; however, float ownership is often not analyzed using the basic assumptions of delay analysis. Furthermore, most of practitioners believed that the float should belong to the project, and therefore parties executing the contract of the project do not need to pay any consideration when using the float, even, it is not necessary. This may affect the functions of schedule management. Meanwhile, the user of later float might commonly bear a larger delay risk. To solve these problems, many scholars had proposed various methods. The primary objective of this study is to construct a new delay analysis method based on the assignment of float ownership. This new method can be used to be a reference to establish contract provisions of float ownership before signing a contract and to serve as a mechanism for resolving and analyzing delay disputes during contract performance. The concepts of criticality of potential risk and cost efficiency are employed as a foundation to address the insufficiency of methods proposed in the past. From the prospect of criticality of the associated risk, this study allocated float and delay responsibility by using criticality index of each activity which was derived from Monte Carlo simulation. From the prospect of cost efficiency, the cost efficiency is measured by the least impact on total cost due to the delay. In other words, the project will result in minimum cost. The results of this study indicate that, in terms of float allocation, in the most of past methods, the activity time of each activity is taken as the basis for allocating float. That is, the longer the activity time is, the larger the float should be allocated to that activity. The method utilized in this study uses critical indices as the basis of float allocation. In other words a larger float should be allocated to activities with higher risk due to delayed. This study found that float allocation may not be efficiently optimized when that float is equally shared between users. Moreover, when analyzing the attribution of delay responsibility, past methods did not consider certain problems associated with weight of severity, namely responsibility assignment on those of critical and non-critical delay. This method weight the criticality due to impact of the delay. Thus, it avoids the situation where a delay occurs on the critical path but the liability is not duly assigned because the party delayed the critical path may have extra floats that are pre-allocated on the non-critical path and are used to decline the liability. The proposed criticality index delay analysis method is based on total project cost impacted by the delay. This method is a systematic approach that considers float allocation and delay responsibility attribution. This method can be used as a reference to establish float ownership attribution before signing a contract and to serve as a mechanism for resolving and analyzing delay disputes and responsibility during contract performance. In addition, this method is suitable for situations where the contractual parties have a large cognitive gap regarding float ownership.謝辭 i 摘要 iii Abstract v 本研究所使用之參/變數符號彙總表 vii 目錄 xi 圖目錄 xv 表目錄 xvii 第1章 緒論 1 1.1 研究背景與動機 1 1.2 研究目的與方法 2 1.3 研究範圍與限制 3 1.4 研究流程與架構 4 第2章 文獻回顧 7 2.1 工程時程管理 7 2.1.1 工程時程規劃 7 2.1.2 要徑與浮時 8 2.1.3 遲延之定義與其產生之原因 13 2.1.4 時程控制與遲延發生處理流程 19 2.2 遲延分析方法與其相關議題 21 2.2.1 遲延分析法的定義與種類 21 2.2.2 遲延分析議題 22 2.3 浮時擁有權之重要議題與分配浮時擁有權 25 2.3.1 浮時擁有權之意義與議題分類 25 2.3.2 分配浮時擁有權之方法 29 2.3.3 分配浮時擁有權之方法優缺點 34 第3章 各國工程時程管理實務上對浮時擁有權之分析 37 3.1 英國 37 3.2 美國 38 3.3 台灣與中國大陸 39 3.3.1 調查之背景分析 41 3.3.2 問卷調查對象 42 3.3.3 問卷設計與方析方法 42 3.3.4 問卷的統計結果 44 3.3.5 調查結果討論 49 第4章 以專案總成本為基礎之要徑指數遲延分析法模式之建立 51 4.1 依據原則 51 4.2 以專案總成本為基礎之要徑遲延分析法模型 53 4.3 專案總成本分析模型 55 4.3.1 承包商使用浮時之成本 56 4.3.2 業主使用浮時之成本 57 4.4 以專案總成本為基礎之要徑指數遲延分析法之運用流程與可能用途 59 第5章 以專案總成本為基礎之要徑指數遲延分析法模式之應用 61 5.1 案例研究 61 5.2 遲延分析流程與結果 65 5.3 討論 71 5.3.1 路徑分配浮時與遲延分析結果討論 71 5.3.2 當事人分配浮時結果討論 74 第6章 結論與建議 79 6.1 結論 79 6.2 後續研究建議 80 參考文獻 83 附錄一：臺北市政府工程契約訂約後工期核算要點 93 附錄二：執行蒙地卡羅模擬分析1000次之各作業之要徑指數 97 附錄三：浮時分配之總成本排名表 1052969624 bytesapplication/pdf論文公開時間：2016/03/21論文使用權限：同意有償授權(權利金給回饋學校)遲延浮時浮時擁有權成本要徑指數thesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/260786/1/ntu-103-F93521706-1.pdf