| In the new era,some large steel rectangular water-storage equipments are more and more widely used in environmental protec tion projects because of their advantages such as small area and quick construction.The steel rectangular water-storage equipment is very competitive and practical in the aspects of environment,safety,manufacturing,installation,anti-seismic performance and maintenance.Recent years,though,with the frequent occurrence of earthquake disasters,the damage of steel liquid storage structure in earthquake is not an uncommon phenomenon.People pay more and more attention to the safety performance of steel l iquid storage structure.T herefore,the study on the static and dynamic response of steel rectangular water purification equipment is of great practical significance.In this paper,the steel rectangular water-storage equipment was used as the research object.On the basis of liquid-solid coupling,the finite element model of steel rectangular water-storage equipment with integral structure of wall plate and internal partition plate was built.T he laws of hydrostatic and dynamic response of liquid-solid cou pling were further studied.Then,the research on reducing the height of steel rectangular water-storage equipment liquid sloshing waves was carried out.Finally,the calculation results about the engineering design of steel rectangular water-storage equipment by the finite element method and the code method were compared and analyzed.T he results obtained are as follows.(1)Based on liquid-solid coupling,the finite element static analysis model of steel rectangular water-storage equipment was set up.T he laws of stress and deformation distribution of wall plates were discussed.T he results are as follows.T he steel rectangular water-storage equipment wall plate bears most of the water pressure,and the deformation of the wall plate is obviously larger tha n that of the partition plate under the static response.(2)In order to obtain the laws of liquid-solid coupling ground motion response of steel rectangular water purification equipment under different types of earthquakes,the finite element numerical analysis of the model is carried out under the action of the near-field without pulse,the near-field pulse,the far-field long period and the Lanzhou wave.T he results show that the height of liquid sloshing wave is greatly affected by TOM wave.However,th e displacement response of the structure and the height of liquid sloshing wave are obvious under the action of Lanzhou wave.In view of this,the methods for reducing liquid sloshing are studied by selecting the seismic response of the steel rectangular water-storage equipment under the action of Lanzhou wave.T hen,optimal holes design proposal for internal partition is determined to effectively reduce the height of liquid sloshing wave and the peak value of structural displacement,and to avoid the occur rence of structural displacement exceeding limit and liquid overflowing phenomenon.(3)Considering the safety and economy of the structure,the calculation results of finite element static and dynamic response about steel rectangular water-storage equipment are superposed by peak value.Compared with the results in the case of the current code for design of steel pool,the displacement of the wall plate is smaller based on the static and dynamic response calculation by finite element method.The results ca lculated by the design code are large,and the calculation method of steel rectangular water-storage equipment given in the existing code is too simple.It is unfavorable to the structural design of steel rectangular water-storage equipment,a nd it is easy to cause the structure design to be not economical. |
