Model tests on bearing capacity and accumulated settlement of a single pile in simulated soft rock under axial cyclic loading

Zhang, Benjiao; Mei, Can; Huang, Bin; Fu, Xudong; Luo, Gang; Lv, Bu

추천

검색

자료유형: 학술저널

저자정보: Zhang, Benjiao (School of Civil Engineering, Wuhan University) Mei, Can (School of Civil Engineering, Wuhan University) Huang, Bin (School of Civil Engineering, Wuhan University) Fu, Xudong (School of Civil Engineering, Wuhan University) Luo, Gang (School of Civil Engineering, Wuhan University) Lv, Bu (School of Civil Engineering, Wuhan University)

저널정보: 테크노프레스 Geomechanics & engineering Geomechanics & engineering 제12권 제4호

발행연도: 2017.1

수록면: 611 - 626 (16page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

The research reported herein is concerned with the model testing of piles socketed in soft rock which was simulated by cement, plaster, sand, water and concrete hardening accelerator. Model tests on a single pile socketed in simulated soft rock under axial cyclic loading were conducted and the bearing capacity and accumulated deformation characteristics under different static, and cyclic loads were studied by using a device which combined oneself-designed test apparatus with a dynamic triaxial system. The accumulated deformation of the pile head, and the axial force, were measured by LVDT and strain gauges, respectively. Test results show that the static load ratio (SLR), cyclic load ratio (CLR), and the number of cycles affect the accumulated deformation, cyclic secant modulus of pile head, and ultimate bearing capacity. The accumulated deformation increases with increasing numbers of cycles, however, its rate of growth decreases and is asymptotic to zero. The cyclic secant modulus of pile head increases and then decreases with the growth in the number of cycles, and finally remains stable after 50 cycles. The ultimate bearing capacity of the pile is increased by about 30% because of the cyclic loading thereon, and the axial force is changed due to the applied cyclic shear stress. According to the test results, the development of accumulated settlement is analysed. Finally, an empirical formula for accumulated settlement, considering the effects of the number of cycles, the static load ratio, the cyclic load ratio and the uniaxial compressive strength, is proposed which can be used for feasibility studies or preliminary design of pile foundations on soft rock subjected to cyclic loading.

#simulated soft rock #model tests #static load ratio #cyclic load ratio #number of cycles #cyclic secant modulus

참고문헌 (0)

참고문헌 신청

참고문헌이 DBpia에서 서비스 중이라면, [참고문헌 신청]을 통해 등록해보세요

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!