海啸对建筑物作用的有限元分析-结构工程专业论文.docxVIP

ABSTRACT Tsunami is one of the most serious natural disasters in coastal areas. Rising or falling movement of seabed causes abrupt vertical displacement of bulk water above the seabed. Then tsunami waves are generated and propagate in all directions. An enormous amount of water which contains enormous energy moves to inland, and it causes serious impact to coastal buildings in low-lying areas with surge submerging or impacts. Tsunami leads to massive casualties and property losses. Numerical simulation is an important method of wave research. The simulation of tsunami impingement acting on the structure model can provide basis for disaster prevention and reduction. It has a great significance to ensure the security of the building and reduce casualties. A three-dimensional numerical flume is set up with FLOW-3D software to simulate tsunami impingement acting on buildings. The main research content of this article is as follows: Three-dimensional numerical flumes are set up with FLOW-3D software to simulate tsunami impingement acting on a building. Ideal solitary wave is adopted to simulate tsunami wave. The influence of openings on buildings under tsunami wave forces is studied. Three-dimensional numerical flumes are set up to simulate tsunami impingement acting on a building. The tsunami horizontal forces on the structure under different tsunami wave heights are extracted and static analysis of the reinforced concrete frame structure is carried out with the finite element analysis software to analyze the response, deformation and damage of the frame structure under the impact of tsunami wave forces. It is shown that the maximum velocity of the leading wave is in proportion to the wave height after the runup of tsunami. The hydrodynamic pressure on the upstream panels of the models is trapezoid distributed in inundated condition. The overall tsunami wave forces on the models decrease proportionally along with the reduction of the upstream panel areas. The model wit