台北盆地松山層黏性土側壓計試驗

Pressuremeter Tests in Cohesive Sungshan Deposits of Taipei Basin

黃立煌(L. W. Wong) ； 張政展(C. C. Chang) ； 林照順(J. S. Lin)

《地工技術》 54期 (1996/04) Pp. 45-54

https://doi.org/10.30140/SG.199604.0004

摘要

本文根據23組側壓計試驗估計台北盆地松山層黏土層之不排水剪力強度及變形模數。試驗結果顯示黏土剪力模數及不排水剪力強度可與現地垂直應力建立經驗關係。側壓計試驗所得之不排水剪力強度高於三軸壓縮試驗之不排水剪力強度約1.4倍，而剪力模數與側壓計不排水剪力強度之比值約為60。

關鍵字

側壓計 ； 剪力模數 ； 不排水剪力強度 ； 解壓／再壓循環

並列摘要

This paper presents the undrained shear strength and the stiffness of the clays in the Sungshan Formation of the Taipei Basin based on 23 sets of pressuremeter test results. Empirical relationships between the soil parameters and the in-situ vertical stresses were established. The undrained shear strength estimated from pressuremeter tests is about 1.4 times greater than that obtained from triaxial compression tests. The average value of shear modulus to pressuremeter undrained shear strength ratio is about 60.

並列關鍵字

pressuremeter ； shear modulus ； undrained shear strength ； unload-reload cycle