The Frictional behavior of Cast-in-Situ Model Piles in Silty Clay in Taipei Basin

• Main Authors: Chang Chour-Wang, 張秋旺
• Other Authors: Shiung Yun-Mei
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/90316821608984104862

碩士 === 國立臺灣科技大學 === 營建工程技術學系 === 82 === The purpose of this research is to study the frictional resistance behavior between the model pile and remolded silty clay in Taipei Basin. The produce model piles were simulated to the construction method of bored pile in-situ. And the middle- triaxial test device in laboratory was used to provide the undrain and axial compression loading condi- tion. From the research, the following results are discovered: 1.The faster the loading rate, the bigger the peak resis- tance as well as the larger the displacement response to the peak resistance were found. Moreover, if the high quality of bentonite and better construction procedure are used, the development of frictional resistance is indepen- dent to the bentonite slurry. 2.Based on the total stress and effective stress methods in same soil condition, the adhesive factor or the effective frictional angle between pile and soil was influenced only by the construction method.In addition,for the rough pile, the displacement corresponding to the peak frictional resis- tance is larger. 3.In order to study the character of frictional resistance of pile, the hyperbolic model was used to simulate both the resistance-displacement and excess pore water pressure- displacement curves. From the analysis, it was found a linear relationship was existed between the constants of hyperbolic function and the consolidation pressure.