Super Post-panamax Double-trolley Bridge Crane Steel Structure Dynamic Response

The Container Crane is mainly used portal machine for loading and unloading the containers in the world. Container Crane has been developed to be large-scale, with ship being more enormous and larger. In another way, because the weight of container is more and the speed of container is faster, especially, the new high efficiency Double Trolley Container Crane (DTCC) made, the Dynamic Response causing by start and brake of container or trolley or gantry is weightily influence to Container Crane's structure design. There are many kinds of criteria for choosing the factor of Dynamic Response during the design. At same time, it is not in accord with fact to choose only one factor in the whole structure. We should calculate reasonable factor to insure safety according to different parts of whole structure. Many crane manufacturers more and more concern about emulating of Dynamic Response.The technique of emulating of Dynamic Response has been applied to many industries. But in our country, this technique is only on the beginning. There are a little research on emulating of Dynamic Response of portal crane and some work is to study and analyze the data which be obtained from the test on Container Crane. We used Finite Element Method (FEM) analysis software-ANSYS to simulate the Container Crane work cycle according with practical work process in this paper. The whole course involves five parts as following.1. By analyzing each section's property and weight of different parts and selecting different element types which are based on structure blueprints, we build the FEM model.2. Container Crane boom will be discrete based on trolley traveling on it. We will select propriety space of time to set up node, so we could simulate trolley travels different location on boom which change by time during the work circulate. When trolley travels some place, we can calculate structure Dynamic Response on this spot with transient analyze of ANSYS. After a circulate ends we will get any node of structure Dynamic Response in this circulate.3. When we are loading and unloading containers, we will meet all kinds of ship that have different capacity. There are different place where engage lift, because of difference of width of ship. We choose the most critical location where container arise to simulate trolley work circulate and structure Dynamic Response is distinct in those locations.4. The Explicit Dynamics (DYNA) has been applied for Container crane structure Dynamic Emulating, attempting to achieve more exact result.5. We compare the results by ANSYS simulating with the data which got by testing. Then we try to conclude the rules on dynamic response how to alter in the different parts and locations during the trolleys work cycle.