頁籤選單縮合
題 名 | 臺北粉質黏土單剪狀態之不排水行為=Undrained Behavior of Taipei Silty Clay Under Simple Shear Condition |
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作 者 | 劉泉枝; 陳世欣; 鄭文隆; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 10:4 1998.12[民87.12] |
頁 次 | 頁627-637 |
分類號 | 441.12 |
關鍵詞 | 粉質黏土; 直接簡單剪力; 重作土樣; 不排水強度; Silty clay; Direct simple shear; Reconstituted sample; Undrained strength; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以Geonor 型式之單剪試驗儀器,進行Ko壓密不排水剪力試驗 (CKoUDSS), 探討臺北粉質黏土之應力應變行為及強度特性。 試驗結果顯示, 對於臺北粉質黏土, 以 SHANSEP 方法進行 CKoUDSS 試驗以減少土樣擾動之影響,可得甚佳之結果。 對於正常壓密 狀態下,其求取之常化不排水剪力強度比約等於 0.22; 而不排水楊氏模數與不排水剪力強 度之比值,則隨過壓密比之增大而逐漸減小。此外,固定 2cm 高度下,直徑 5 cm 與 8 cm 試體試驗結果求取之不排水強度則無顯著之不同。 而薄管土樣與重作土樣以 SHANSEP 試驗 程序進行 CKoUDSS 試驗,其結果則甚為相似。 |
英文摘要 | The purpose of this study is to obtain the undrained stress-strain and strength properties of the Taipei silty clay using the direct simple shear device. Piston samples were taken from the K1 zone of the Taipei basin. Both tube samples and reconstituted samples were tested. The direct simple shear apparatus developed by NGI was used to perform Ko-consolidated undrained shear tests (CKoUDSS). Test results show that a typical stressstrain behavior of the Taipei silty clay under direct simple shear stress system could be established when the SHANSEP approach is adopted. The normalized undrained shear strength ratio at normally consolidated state obtained from CKoUDSS test is about 0.22, and the ratio of undrained Young's modulus and undrained shear strength decreases with increasing OCR. In addition, the effect of sample size on the strength properties is not significant for samples of 5cm and 8cm diameters. Similar behavior between the tube and reconstituted samples has been observed during CKoUDSS test using the SHANSEP approach. |
本系統中英文摘要資訊取自各篇刊載內容。