| Ground fissures not only destroy all kinds of buildings,but also bring harm to people's lives and safety.With the expansion of city scale of urban construction and the increasing high demand for land,it is inevitable to meet problems such as constructing buildings or structures on the ground fissures.For the construction of this kind of project,it is necessary to take some technical measures on the upper structure,groundwork and foundation of the building to reduce the damage of structure across groung fissure.These measures urgently need to be tested.Therefore,it has great theoretical significance and engineering practical value to study on the shaking table test and numerical analysis of disaster control measures across ground fissure.Firstly,on the basis of summarizing disaster prevention measures of the existing construction engineering across the ground fissure belt,according to the similarity theory,this paper designed and made a 1/15 scale of five-story reinforced concrete frame structure across the ground fissures,then carried on the shaking table test.Secondly,throughing the arrangement of the shaking table test data,this paper analyzed the reinforced model from the aspects of structure dynamic characteristics,acceleration response,displacement response and strain.It discussed the dynamic response law of upper and lower plate and the deformation law and failure mode of the reinforced frame structure under earthquake.Finally,this paper establish the model of reinforced concrete frame structure before and after reinforcement by ABAQUS,and the results is consistent with the results of shaking table test.At the same time,after comparative analysis of the two modles from the top layer displacement,acceleration,the floor shear and other aspects the seismic performance of the comparison,it was found that the reinforcement scheme proposed in this paper is feasible.The reinforcement method can effectively reduce the damage of frame structure. |
PDF Full Text Request