| Summary: | 碩士 === 正修科技大學 === 營建工程研究所 === 97 === This thesis presents a case study of deep excavation for the CR2 turnkey project construction includ R4A,R5,R6 station in Kaohsiung Mass Rapid Transit System (KMRT). This study discusses the displacement of diaphragm wall, the ground responses and the settlement of buildings nearby the excavation site. The analysis result showed that the characteristic of CR2 deep excavation to tally approximately with f0rmer’s study. In which, the ratio of the penetration depth D of diaphragm wall and the deep excavation depth H is between 0.73 and 0.80, the ratio of wall thickness t and the deep excavation depth H is between 4.51﹪ and 5.28 ﹪, the ratio of wall length L and the deep excavation depth H is between 1.73 and 1.8. Moreover, the ratio of maximum wall displacement δhmax and the deep excavation depth H is between 0.21% and 0.30%, the ratio of maximum ground settlement δvmax and the deep excavation depth H is between 0.07% and 0.26%,and the value of δvmax over δhmax is between 0.35 and 0.88. The above empirical formulas can be used for design and analysis purpose in relative region for Red and Orange Line of Kaohsiung MRT .
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