Analysis On Seismic Performance Of A High-rise Residence Shear Wall Structure With Large Aspect Ratio

With the development of the society and the improvement of the national economy,people’s demand for housing increasingly diversified function,under the condition of the limited land resources,more and more super-tall residential arises at the historic moment,under the established architectural plane,the structure of the aspect ratio will increase along with the height of the structure and increasing the technical specification for concrete structures of tall building(JCJ3-2010)the first article 3.3.2 rainfall distribution on 10-12: high-rise building is the aspect ratio of the structure bearing capacity and stiffness of the overall stability of economic rationality of macro control;In the structural design to meet the basic requirements of the provisions of this procedure and under the condition of economic control,aspect ratio limit must meet is not based on the combination of practical engineering example of height to width ratio of more than two times the limit of high-rise shear wall structure housing simulation analysis,for the design of the similar high-rise structure reference opinions are put forward.In the structural design to meet the basic requirements of the provisions of this procedure and under the condition of economic control,aspect ratio limit must meet is not based on the combination of practical engineering example of height to width ratio of more than two times the limit of high-rise shear wall structure housing simulation analysis,for the design of the similar high-rise structure reference opinions are put forward.This article selects a certain aspect ratio of 12.6(168.15 m)structure height of shear wall structure super-tall residential project structure model using SATWE and ETABS two kinds of calculation and analysis software,more than in the elastic time history analysis under seismic action,seismic fortification intensity equivalent elastic analysis under severe earthquake under the action of elastic-plastic analysis according to overrun high-rise building engineering seismic fortification special examination technology main points,the ratio of transfinite high-rise building overall calculation and calculation of the structure stability and bearing capacity of the key component of the second,by adjusting the model,without setting embedded column.In the case of the end column,the thickness of the shear wall at the key position is changed to explore the influence of the thickness of the shear wall on the index items such as the maximum inter-layer displacement Angle torsional displacement ratio of the natural vibration period of the whole structure,and the influence of different adjustment schemes on the seismic performance of the whole structure is analyzed.Through the analysis and research in this paper,the following conclusions are drawn: this project belongs to the height of the high-rise building,the ratio of height to width exceeds the limit,the reasonable layout of the structure and the key parts to take strengthening measures,can meet the norms of "small earthquake is not bad、moderate earthquake can be repaired、major earthquake is not broken" seismic fortification targets.In cycle than meet the specification requirements under the premise of structure cycle ratio,the greater the structure of the maximum interlayer displacement Angle and maximum displacement ratio,maximum displacement between layers than the smaller,the better,the safety of the structure show that two major axis the lateral stiffness of the gap is smaller,the higher the lateral resistance of the whole structure,so the need according to the actual project,reasonable adjusting the thickness of the shear wall,narrow the gap between two major axis of lateral stiffness,can effectively reduce the torsion effect of the structure,improve the lateral stiffness of the whole structure.