Influence of composite elastic modulus and lateral load pattern on deflection of anti-slide pile head

Abstract

This paper develops a new method to directly determine the composite elastic modulus of the reinforced con- crete cantilever pile rather than adopt theoretical or empirical approaches. On the basis of the theory of material mecha- nism, the load-deflection equation was deduced to create the relationship between the elastic modulus and the ratio of load-deflection. The numerical modelling tests based on ANSYS separation modelling technology were carried out to determine the composite elastic modulus under different reinforcement ratio, concrete strength grade and distribution pat- tern of driving force. The results can be used to create the quantitative relationship between the composite elastic modulus and reinforcement ratio as well as concrete strength grade. Comparison amongst various lateral load pattern were made to show that the deflection of pile head is obviously affected by the lateral load pattern, and the corresponding equations of the deflection of the pile head under different lateral load pattern were proposed, which can reflect the ranking of the great influence on the deflection of the pile head, rectangular, trapezoidal and triangular lateral load pattern in order.

Keywords:

• reinforced concrete
• cantilever pile
• composite elastic modulus
• lateral load pattern
• deflection

Additional information

Notes on contributors

Changdong Li

Changdong LI. PhD, Associate Professor in the Department of Engineering Geology and Geotechnique, Faculty of Engineering, China University of Geosciences, Wuhan, China. His research interest is the interaction mechanism between the engineering struc- ture and geological mass, especially the mechanical behaviour and deformation of concrete piles.

Qingtao Liu

Qingtao LIU. Assistant Engineer, in the Research Institute of Geotechnical Investigation, Qingdao Geotechnical Investigation And Surveying Institute, Qingdao, China, Wuhan, China. His research interest is the mechanical behaviour and deformation of engineer- ing structure by different approaches, including theory analysis and numerical modelling methods.

Xinli Hu

Xinli HU. PhD, Professor in the Department of Engineering Geology and Geotechnique, Vice dean of Faculty of Engineering, China University of Geosciences, Wuhan, China. Her research interest is anti-sliding effect of the engineering structure.

Liangqing Wang

Liangqing WANG. PhD, Professor, Head of the Engineering Geology and Geotechnique, Faculty of Engineering, China Univer- sity of Geosciences, Wuhan, China. His research interest is the control of geo-hazards with engineering structure, particularly the mechanical analysis on concrete piles.

Ez Eldin M. A. M

Ez Eldin M. A. M. Researcher at the Department of Engineering Geology and Geotechnique, Faculty of Engineering, China University of Geosciences, Wuhan, China and Head Department of Engineering Geology and Hydrogeology, University of Bahri, Khartoum, Sudan. His research interest is the site investigation and evaluation of geological and geoengineering properties of soil and rock materials and application of geophysics in the fields of civil engineering and geotechnical engineering.