Numerical Analysis Of Inland River Suspended Vertical Container Wharf Under Seismic Load

Due to the new type of Inland River Suspended Vertical Container Wharf, poor working environment and the complexity of structural forces, coupled with economic, technological and other reasons, the study on its mechanical characteristics should be broaden.Therefore, in order to ensure the wharf safety and applicability, carrying out the study on seismic performance of Inland River Suspended Vertical Container Wharf is very necessary.In this paper, in order to understand the seismic behavior of Inland River Suspended Vertical Container Wharf fully and comprehensively, and provide relevant reference to future design and verification, finite element software ANSYS is used to analyse its mechanical behavior under the horizontal seismic load.The main work and conclusions of the thesis are as follows:(1) Through the modal analysis of three-dimensional finite element modal of wharf structure, the conclusions can be drawn: Because of the presence of a large number of Longitudinal Beams, the fundamental frequency of the wharf structrue will be increased and the vibration is not easy to be excited, and it is beneficial to structural seismic;The 8-order modal values of the wharf structrue present a sectional lumped obviously, which indicates that the longitudinal and transverse stiffness distribution of structrue is even and with good integrity, but according to "strong column-weak beam" principle of frame structural seismic, appropriate reduction the number of Longitudinal Beams is beneficial to structural seismic.Therefore, During design the number of Longitudinal Beams should be comprehensively considered.(2)Through the time history analysis of the wharf structrue, the conclusions can be drawn: The main bearing components of the wharf, except for piles and crossbeams, are changed according to the excitation orientation, and the components which are along excitation orientation are the bearing ones; The maximum shearing forces and moments of main wharf components are produced at the bottom of the structrue and gradually decreased along the height direction; The horizontal displacement distribution of wharf structure is different at different orientation excitation, and only lateral displacement is produced when lateral excitation occurs, but both lateral displacement and longitudinal displacement are produced when longitudinal excitation occurs, and the value of lateral displacement is 25 percent of the longitudinal one. (3) The plane finite element model of pile-soil-wharf structure system, super-wharf structure system and simplified wharf structure for engineering calculation are built to study the influence to Seismic Behavior of Inland River Suspended Vertical Container Wharf which are in the district with thick soil covering when considering the interaction between pile and soil and using simplified modal for engineering. Through the modal analysis of modals, the conclusions can be drawn: The value of fundamental frequency of super-wharf structure system modal is the hightest, and it will be decreased when considering the interaction between pile and soil and using simplified modal for engineering. And the value of fundamental frequency of using simplified modal is the lowest. Through the time history analysis of the modals, the values of displacement, shearing force and moment of columns will be decreased by certain rules, but the axial forces are unchanged when considering the the interaction between pile and soil; The values of shearing force and moment of columns when using simplified modal for engineering is higher than the pile-soil-wharf modal, while the displacement of it is lower. And the axial forces are unchanged.