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標題: | 營建工程結構體主要材料碳排放分析研究-以港灣工程為例 Analysis on the Carbon Emission of Structural Materials in Construction Projects-Lesson-Learned from a Case of Harbor Engineering |
作者: | 葉鳳鳴 Fong-Ming Yeh |
指導教授: | 曾惠斌 Hui-Ping Tserng |
共同指導教授: | 詹瀅潔 Ying-Chieh Chan |
關鍵字: | 港灣工程,碳盤查,碳排放量,沉箱製作(含回填),近零碳排,碳當量, harbor engineering,carbon inventory,carbon emissions,caisson production (including backfill),near-zero carbon emission,carbon equivalent, |
出版年 : | 2023 |
學位: | 碩士 |
摘要: | 氣候暖化問題已是全球刻不容緩的課題,各國也紛紛提出因應策略及進程,為減緩暖化問題,近零碳排已成為趨勢。營建產業素有火車頭產業之稱,主要原因是營建產業從規劃設計的低碳排放量階段,至施工階段開始運作,即帶動相關施工材料、產品開發、機具設備及勞動人力的大量使用,竣工移轉營運維護、最終廢棄處置階段,各階段產生的碳當量不一,尤以施工階段較高。
本研究試以建構港灣工程碳盤查的計算架構,從工程契約總表與詳細價目表之工作項目判讀並進行分類,共分為4類,第1類港灣工程專有項目,第2類因地制宜配合項目,第3類填地工程項目,第4類假設工程項目。本研究則以第1類為探討範圍,將第1類項目按施工順序先後歸類併項,計算相同屬性項目於該類之工程費用占比高低,決定碳盤查項目之重要性及優先順序,再按詳細價目表選定之碳盤查項目,探討單價分析表之中子項目對該項目工程費占比與重要性。經前述研究流程找出高碳排項目,進而選擇「沉箱製作(含回填)」進行討論,本研究案例工程個案直接工程總金額約190.65億元,歸類併項後「沉箱製作(含回填)」金額約84.34億元,約占研究案例直接工程費44.24%。 本研究以鋼筋及混凝土材料為例,了解沉箱結構體主要材料從搖籃到出供應商大門之碳排放量,以及討論各項影響此階段碳排量計算之因子,蒐集環保署產品碳足跡資訊網(2015〜2022年)公告係數差異性進行探討,本研究結論推導出影響混凝土碳排放係數變因有「材料替代率」與「水泥種類」等2項重大因子,然而影響鋼筋碳排放係數變因有「鋼筋(胚)製程」、「原料來源」、「排除項目」、「單一活動數據來源」等4項重大因子。本研究案例有關沉箱結構主要材料碳排放量之設計與實際碳排量差距,以鋼筋實際碳排放量較設計減少約46.2%為例,主要變因為「鋼筋製程」及「原料來源」不同等2項差異因子;混凝土實際碳排放量較設計減少約35.8%為例,主要變因為「材料替代率」不同等主要差異因子。 The problem of climate warming has been an urgent topic in the world, and various countries have also put forward response strategies and processes. In order to slow down the warming problem, nearly zero carbon emission has become a trend. Construction industry, known as the locomotive industry, the main reason is that the construction industry from the planning and design of low carbon emissions stage, to the construction phase, which drive the related construction materials, product development, machine equipment and labor manpower, completion transfer operation maintenance, eventually waste disposal stage, each stage of the equivalent of different carbon, especially in higher construction stage. This study tries to construct the calculation architecture of carbon inventory of harbor engineering, interpret and classify the work items from the project contract summary table and detailed price list, and are divided into four categories: category 1 harbor engineering proprietary projects, category 2 coordinated projects according to local conditions, category 3 land filling projects, and category 4 hypothetical projects. In this study, the category 1, class 1 projects according to the construction order, the calculation of the same properties in the project cost proportion, determine the importance and priority of the carbon inventory project, and then according to the detailed price list, and discuss the cost of the unit price analysis table. After the aforementioned research process, the high carbon emission project was found, and then the "caisson production (including backfill)" was selected for discussion. The total amount of direct engineering of the case case of this study is about 19.065 billion yuan, and the amount of "caisson production (including backfill)" after classification is about 8.434 billion yuan, accounting for about 44.24% of the direct engineering cost of the study case. In this study, including reinforcement and concrete materials, Understand the carbon emissions of the caisson structure from the cradle to the supplier door, And to discuss the factors affecting the calculation of carbon emissions at this stage, Discuss the differences in announcement coefficient of announcement products (2015〜2022), The conclusion of this study is that there are two important factors affecting concrete carbon emission coefficient, such as "material substitution rate" and "cement type", However, there are four major factors that affect the carbon emission factor of steel bar: "steel bar (embryo) process", "raw material source", "exclusion project" and "single activity data source". The difference between the carbon emission of main materials of caisson structure and the actual carbon emission of steel bar is reduced by about 46.2% compared with the design, for example, mainly because of "steel bar process" and "raw material source"; the actual carbon emission of concrete is reduced by about 35.8% compared with the design, mainly because of "material, substitution rate". |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/88268 |
DOI: | 10.6342/NTU202301826 |
全文授權: | 同意授權(限校園內公開) |
顯示於系所單位: | 土木工程學系 |
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