地下連續壁採用自充填混凝土施工之實務面探討--以臺北市內湖區市民運動中心新建統包工程為例

Abstract

摘 要 隨著科技日新月異，工程材料及工法亦隨著推陳更新，期望獲得更優良的施工性、工程品質及最大利益。目前國內土木建築工程推廣自充填混凝土(Self-Compacting Concrete 簡稱SCC)已有初步成效，然而地下連續壁則較少採用；茲針對本工程連續壁採用SCC澆築過程與結果彙整統計及比對，期望對爾後類似工程提供參考價值。 本研究除對SCC單一強度配比之基本試驗(抗壓強度、抗彎強度、劈裂抗張強度、乾縮和潛變及握裹力等)外，主要探討SCC澆置於地下連續壁過程的問題(施工性、品質管理等)及開挖後的壁體變形、強度檢測、壁體表面平整度、公母單元界面滲水檢測以及成本比較等，期以實務面作一序列檢測及紀錄，以建立相關數值資料供參。

Abstract Similar to the development of technology, materials and construction methods of civil engineering have also become innovative. Because of this, engineers have obtained better workability, quality of construction and benefits. At present, domestic civil and architectural engineering promote the use of Self-Compacting Concrete (SCC) and seem to be very successful. However, SCC seems to be used less in underground diaphragm walls. Therefore, in our project, we use SCC in underground diaphragm walls and show the pouring process and the results of collections and the comparison analysis. We hope to provide valuable references for similar projects. In addition to the basic tests of strength and mixture of SCC, (such as the strength of compression, bending and splitting, and the characteristics of shrinkage, creep and bonding), this study mainly discusses several problems of the process of pouring SCC into underground diaphragm walls, (such as workability and the quality management), wall deformation after digging, strength detection, leaking examination of diaphragm wall units and cost comparison. By providing a series of examinations and records, we hope to develop the related practical data for reference.