在建築工程的設計階段,可施工性的重要性經常被低估,往往並未得到足 夠的關注。本文提出了一種桁架結構系統施工之複雜度的定量測量方法,可用於 早期設計階段的可施工性之定量指標。施工是被認為是設計建築物形式的建築師 和實施施工任務的營建廠之間的合作承諾。單獨的設計形式不能提供足夠的信息 來指定實際施工的過程。需要足夠的施工訊息,才能使得施工者可以確定如何實 際構建的形式。本研究的目的是建立一個基於 Shannon 資訊理論基礎來評估施 工所需資訊量的模型。這些資訊量是基於建築設計圖之拓撲圖中其組裝的不確定 性以及建築師和施工者在設計施工之資訊模型的共享知識庫。在本論文中,不確 定性的熵被顯示為量化可施工性複雜度的評估指標。馬爾可夫鏈,蒙特卡羅方法 和對稱群理論也用於我們的模型中,以分析不同程度的組構方式的可施工性。本 研究的範圍目前集中在分析桁架結構系統的可施工性,並對六種不同類型的桁架 結構系統的進行評估。並在柬埔寨的一個校舍建設計畫中,評估了五種設計方案, 並以本理論模型確定設計案的可施工性。結果顯示,本理論方法可以幫助建築師 設計容易施工的桁架結構系統,並探索可施工性的重要設計原則

The importance of constructability is often understated in the design phase of a construction project. Issues regarding constructability often do not receive sufficient attention until it is too late for design changes. This thesis proposes a quantitative measure of the complexity of construction in truss structural system design that can be used as an index of constructability in the aspect of standardization and repetition elements at early design stages. Construction can be regarded as a co-operative undertaking among architects, who specify the form of a building, and builders, who implement construction tasks. The designed form alone does not provide enough information to specify feasible processes for actual building. Sufficient fabrication information is needed so that fabricators can be completely certain concerning how to actually build the form. The goal of this thesis is to establish a model for estimating the amount of information needed for construction based on Shannon’s information theory. This amount of information is based on uncertainty concerning assembly construction in the topological graph of the designed form, and the knowledge base shared by the designer and the builder in a design-build communication model. In this thesis, the entropy of uncertainty is shown as being quantified as an index of constructability assessment for the attributes of standardization and repetition. Markov chain, Monte Carlo method and symmetry-group theories are also used in our model to analyze different levels of assembly. The scope of this thesis is currently focused on analyzing the constructability of truss structure systems. The quantitative measure of the complexity of construction is demonstrated for six different types of truss structural systems. The five alternative designs are assessed for a schoolhouse project in Cambodia requiring easy construction, identified by our theoretical model. The results show that our methodology can help architects to design easily constructed truss structural systems and explore important design principles for improving constructability.

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