剛性固定連續壁之無支撐開挖擋土工法及其擋土結構

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

107107971

專利證號

I 666363

專利獲證名稱

剛性固定連續壁之無支撐開挖擋土工法及其擋土結構

專利所屬機關 (申請機關)

國立臺灣科技大學

獲證日期

2019/07/21

技術說明

一種剛性固定連續壁（Rigid and Fixed Diaphragm wall，RFD）之無支撐開挖擋土工法，可固定開挖底面下方連續壁或使其產生極小的側向位移，並使開挖底面上方的連續壁呈線性且剛性位移，進而達到無支撐效果。該工法包括以下步驟：在基地中採用連續壁作為開挖之擋土壁；在開挖底面下方，施作地中壁剛接於兩相對的連續壁，以使開挖底面下方的連續壁被固定或產生極小的側向位移；在開挖區內垂直於連續壁方向施作扶壁，其深度從近地表處至地中壁深度處且剛接於連續壁，以使連續壁在開挖過程中，產生線性且剛性的位移。另提供一種以上述工法施築的擋土結構。 A rigid and fixed diaphragm wall strut free excavation construction method which can fix the diaphragm wall below the excavation surface or generate a minimal lateral displacement and make the displacement of the diaphragm wall above the excavation surface be linear and rigid to achieve the strut-free effect. The method includes the following setups. A diaphragm wall is utilized as the retaining wall in an excavation. Cross walls are constructed below the excavation surface to rigidly connect the two opposite sides of diaphragm wall, and make the diaphragm wall fixed or generate a minimal lateral displacement. Buttress walls are constructed in the excavation zone and perpendicular to the direction of the diaphragm wall and rigidly connected the diaphragm wall, which make the diaphragm wall to produce a linear and rigid displacement during excavation. A retaining structure constructed by the above method is also provided.

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