Static And Dynamic Analysis Of Large Rectangular Aqueduct Structure

Aqueduct is a conveying channel flow, and across the river, ShanChong, taniguchi cross buildings, roads, etc, is one of the most commonly used vertical cross structures in hydraulic structures. In the main canal of south-to-north water transfer project, the number of large cross aqueduct structures have dozens of, and most of the aqueduct are located in the seismic intensity in over 7 degrees, some even in a high incidence of the earthquake, the seismic design of the aqueduct research will be for the whole of the south-north water diversion project safety and benefit and people’s property safety have a major impactPerforming a structural stability analysis on a concrete arch dam involves several different tasks,or steps. One important task should include developing an awareness as too how different characteristics affect the behavior of the dam. Sensitivity analyses can play a critical role in understanding the effects these different structural and material parameters have on the structure.Mainly performing in the defect diagnosis at the arch dam runtime. Unfortunately,in many evaluations sensitivity studies are under utilized or overlooked all together. The results of the sensitivity analysis is often not used as a reference.Because of the aqueduct structure in use process, will be affected by water pressure, gravity, etc. The effect of static load, and the wind load, load, seismic load and other dynamic loading, how to ensure the safety of the aqueduct under various load combination is used is extremely important. Itself "top-heavy" plus aqueduct structure characteristics, even with good supporting form, because of the influence of the water body, the aqueduct of the earthquake is very bad. Therefore, to carry out the seismic response of large aqueduct structure and related analysis of the research is of great significance.In this paper, using large-scale finite element software scaled to the site of one of the water conveyance project of south-to-north water transfer project ditch adina.the large rectangular aqueduct double groove were analyzed, and the aqueduct static analysis model is established, dynamic characteristics analysis model, the dynamic response analysis model. Involving aspects:prestressed reinforcement processing, the processing of bearing, trough body lever handle, each cell of the grid treatment, foundation treatment, the method of water simulation, etc.This paper will be divided into three kinds of working condition on site ditch aqueduct analysis:condition 1:two slot anhydrous, condition 2:two and a half groove depth, condition 3:two groove depth slow. Conditions are analyzed respectively, and under the condition of static analysis, dynamic analysis, dynamic response analysis. Extract relevant results of the stress displacement, and relevant conclusions.The analysis results show that the tank body overall lateral stiffness on the low side. The location of the tank body stress in the most value is generally for the wall or the bottom of the sidewall and tank body parts touch each other. In these areas are prone to stress concentration phenomenon, this requires that in the actual design, considering the economy at the same time, the place in prone to stress concentration, shall adopt the increase contact surface or increase the amount of reinforcement method, prevent stress damage. At the end of tank body, pay attention to the vertical reinforcement layout position, adjust the contact part of the concrete and steel bar.