| As a new type of pile,the Concrete Extended-Plate pile has played its unique advantage in the field of engineering.On the basis of ordinary straight hole pile,the bearing plate is added to the pile by the construction technology such as extrusion,rotary expansion or drilling and expansion.The end bearing force and side friction resistance of the pile are improved,and the mechanism of the pile’s stress has been changed.Compared with the ordinary concrete straight hole pile,the Extended-Plate pile has good vertical and horizontal bearing capacity,and has a good development prospect.At present,some achievements have been made in the study of the vertical bearing capacity of the Concrete Extended-Plate pile,but there is still a great lack in the research of the horizontal bearing capacity.In order to improve the research of the Concrete Extended-Plate pile under the horizontal load,this paper further research on the research results of the early the Concrete Extended-Plate pile.The influence of location of disk on horizontal bearing capacity of the Concrete Extended-Plate pile is studied.The biggest difference between the Concrete Extended-Plate pile and the common pile is the existence of the bearing disk,which is flexible and flexible when setting the bearing disk,and the position of the bearing plate has an influence on the stress state and bearing capacity of the soil.Therefore,it is of practical significance to study the position of the bearing disk.In order to guide the engineering practice better,this paper will study the effect of disc position on the failure state of the soil under horizontal force with the aid of model test and ANSYS simulation.In the experiment,a small proportion half face pile model test method is designed,and the soil collector and loading device are made.The model pile test is carried out.The whole process of soil mass from loading to failure can be observed by using half surface pile.During this period,the failure state of soil and the displacement value of pile top can be recorded and the test is analyzed.At the same time,the ANSYS finite element simulation software is used to simulate and analyze the disc position of the concrete reamer pile,and the corresponding load displacement and stress strain data are extracted.According to the stress and displacement changes of the pile and the failure phenomenon of the soil in the pile,the change of the end resistance and the side friction resistance under the different disk positions is analyzed.Law.Through the comparison between the model test and the ANSYS simulation,the failure state of the soil around the pile is analyzed.The smaller the distance from the position to the top of the pile is,the higher the horizontal bearing capacity,but the distance should not be less than the reasonable range,so as to avoid the overall failure of the soil on the plate.Through the study of the influence of disc position on the horizontal bearing capacity of the Concrete Extended-Plate pile and the failure state of pile soil,the design theory of the Concrete Extended-Plate pile is perfected,and the calculation method of the horizontal bearing capacity of the Concrete Extended-Plate pile is improved,which provides a certain value for the application of the Concrete Extended-Plate pile in the practical engineering and the research and development of the pile foundation.Theoretical guidance. |
