MEDIUM-SCALE LOADING TESTS AND NUMERICAL ANALYSES OF CAISSON TYPE PILE UNDER LATERAL LOADING CONDITION ON SLOPE OF MEDIUM-HARD ROCK / 中硬岩地盤の急傾斜地における深礎の水平支持力特性に関する中規模載荷実験と数値解析
- Resource Type
- Journal Article
- Authors
- Hideaki TAKAHASHI; Kazuo TANI; Manabu MATSUSHIMA; Naoaki KAWAMURA; Shigeru TANABE; 松島 学; 河村 直明; 田邉 成; 谷 和夫; 高橋 秀明
- Source
- 土木学会論文集C(地圏工学) / Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering). 2014, 70(1):150
- Subject
- caisson type pile
elasto-plasticity
finite element analysis
jointed rock mass
lateral loading test
scale effect
slope
strain-softening
- Language
- Japanese
- ISSN
- 2185-6516
This study focuses on the lateral resistance of caisson type pile of power transmission towers on steep slope subjected to lateral loading. Two medium-scale lateral loading tests were conducted in medium-hard discontinuous rock slopes of 30 and 50 degrees respectively. In order to estimate mechanical properties of discontinuous rock mass, scale effect and variability of shear strength and Young's modulus were evaluated by a series of triaxial compression tests using specimens of diameters from 5 to 30 cm. Nonlinear elasto-plastic FE analysis was used and the computed results were compared with the experimental results. The results shows that (1) the lateral bearing capacity is depend on resistance of front block and pile side, (2) the width of the passive sliding block is equal to three times diameter against the pile width, and the angle of the sliding block surface can be described by Coulomb's earth pressure theory.