營造商在規畫設計階段,對於開挖工法除依據詳實鑽探報告資料經過完整審慎的地質改良規劃設計及風險評估作業外,選擇一個合適安全的最佳地盤改良工法配套安全的地下室基礎擋土開挖工法,使其能夠安全、如期、如質的完成是工程最重要的目的與重點。本研究對於各種地下室開挖及擋土工法優缺點進行文獻分析,並以德爾菲專家問卷找出開挖工法選擇之因子。 In order to improve the quality of life, urban development in metropolitan areas has gone towards the sky or under the ground. The building structure is one of such examples. The tall buildings generally have a large and deep basement foundation to be exc