Seismic Response Analysis Of The Brick Masnory Building With Frame-Shear Wall Structure At First Two Stories

Brick masonry building with frame-shear wall structure at first two stories is a compound structure composed of two different material, which has a structure character of "the above stiffness is bigger than underside","the above weight is heavier than underside".Due to its uneven stiffness distribution, the structure's internal force and deformation under the effect of earthquake influenced by floor deformation can't been over-looked. Staircase as earthquake and fire emergency escape key vertical channels, the impact on the overall structural stiffness can not be ignored. Therefore, in this article, The existing methods of calculation and analysi are Summarized, the thesis whose research structure is a building with frame-shear wall structure at first two stories and four-floor brick masonry structure at the upper part, adopting the finite-element analysis program-SAP2000, calculated and analyzed the anti-seismic behavior influenced by the change of aseismic wall's distance and the transitional staircase'location. Basing on the feature of the structure member, the structure is simplified to a 3-D model consist of space beams and plates, so we can make static and response spectrum dynamic analysis on the finite-element models. Analysizing and comparing various structure scheme, the analysis result leads to that the results from floor deformation for brick masonry building with frame-shear wall structure at first two stories concentrate on the second story and transitional-third-floor. The earthquake response of every first floors, especially the transitional floor brick wall is greatly influenced by the first aseismic wall. the stairs of the ladder boards with the bracing force of the state of the overall stiffness of the structure have more significant effect on the layout of the stairwell to reverse the deformation of the structure of a great influence on one end of the stairwell in the housing will lead to reverse the role of the eccentric. Earthquake response spectrum analysis to the structure reflected deformation distributed law which is can't be gained by plane analysis method.The research of the thesis offered the thorough direct knowledge to the anti-seismic behavior results from the floor deformation.For raising the strueture's anti-seismic behavior, this is a practical measures.