Experimental study of collapse behavior of single-layer cylinder shells with infilled walls

Abstract

To study the dynamic responses, dynamic characteristics and seismic performance of the single-layer cylinder shell considering the effect of infilled wall, several groups of shaking table tests were carried out. The acceleration responses, displacement responses and strain responses were measured in the tests, and the structural seismic performance was evaluated under different seismic motions and input principal directions. The mechanism of load redistribution was investigated to evaluate the local damage effect on the whole structural collapse and the progressive collapse resistance, and the test results were compared with those from the shaking table tests of the single-layer cylinder shell without the effect of infilled wall. The results show that the infilled wall changes the dynamic characteristics and dynamic behavior of the whole structure, and the damage of the infilled wall cause abrupt change of the dynamic response including the acceleration amplification effect and strain amplification effect. The collapse resistence of the structure is reduced because of the infilled walls, and the collapse pattern is also changed. The ductility of the single-layer cylinder shell structure is reduced, and this is conflict with the traditional view which believes the infilled wall will enhance the seismic resistence performance. The data and conclusion of this study will provide references to the evaluation of seismic resistance and engineering practices for cylinder shell structure.