Earthquake Dynamic Response Analysis Of High-rise Buildings On The Tunnel

As countries speed up the pace of urbanization, the world is in order to meet theneeds of production and consumption is devoted to the co-nstruction of high-rise bui-ldings, high-rise building has become a product of The Times.The development andutilization of underground space has become the inevitable trend of urban moderniz-ation，the sub-way as one important annulus of underground space development andutilization, has already been a kind of effective means to solve urban road traffic pro-blems.Then city tunnels buildings in encounter earthquake is still can keep the structureperformance will become practice concerned problem. So how to choose the form ofhigh-rise buildings, understand the structure stress conditions, grasp the building seism-ic response of the nonlinear time history analysis, plays a pivotal position to ensuresafety, to save inves-tment and reduce cost. Also urged people to improve the existingcalculation method and engineering design, make it more reasonable and meet the needsof daily production. In this paper, the seismic loads caused by several different burieddepth of tunnel adjacent to analysis the dynam-ic response of a high-rise building stru-cture, adapting the numerical simulation research, the main research contents andresearch results are as follows:(1) Analysis the research status of the high-rise buildings and underground spaceand the existing present problems. Reviewed the basic principle of finite element soft-ware modeling, and simulation realization method. According to the seismic analysistheory, through the ANSYS processor for secondary development, it is concluded thatthe numerical results.(2) Based on a frame tube structure as the prototype, based on the experience for-mula Peck settling tank theory and field soil conditions to determine the structure ofrock mass model size, and then conduct the finite element numerical simulation analysis;Applica-tion of this method to establish model,the results will be more close to the pra-ctical project, and can play a role of prediction to the structure safety, and at the same ti-me, this method can be applied to three dimensional finite element modeling process.(3) Establish a tunnel model and no tunnel to compare, we can get the axial forceand shear force, bending moment,stress and displacement change of the tunnel adjacenthigh-rise building structure, change of the influence when the rock mass that is contain-ed in the upper tunnel construction. Analysis when rock mass containing a tunnel to the upper part of high-rise building settlement and internal force of the impact have differe-nt changes, shear force, bending moment and stress is bigger, but smaller values of theaxial force compared with no tunnel conditions; the change trend of displacement andstructure internal force is the same,but in a direction perpendicular to the tunnel, thedisplacement of structure change is bigger, up to17%, in engineering design need to bekept under strict control.(4) Establish four different buried depth of tunnel-frame tube structure model toresearch,to all sorts of respectively under the condition of dynamic response analysis ofthe model, get displacement, acceleration and shaft force schedule diagram. Analysisshows that the engineering conditions, the upper tunnel structure on seismic dynamicresponse of the most value increased by more than20%. Compared under different bur-ied depth changes, get a changing rule: the tunnel buried depth0~15m, the upperstructure dynamic response to earthquake is gradually enlarged,15~20m, the dynamicresponse after the peak decreases. For through the surrounding rock in the nearby largebuildings and structures of different buried depth of metro tunnel construction safetyand economy,it has a good guidance meaning.