Dynamic Response Research On Deep Foundation Pit Of Shenyang Jin Zhaoyuan Mansion ?

Our country is one of the most earthquake-prone countries in the world. Along with the increasement of large deep foundation pit engineering in our country, the foundation pit which involes dynamic analysis has gradually attracted much more attention. Under a through digging of related literature, dynamic response of Shenyang Jin Zhaoyuan Mansion ? deep foundation pit have been studied to analyze the dynamic characteristic of deep foundation pit which next to high-rise building in FLAC3D.Based on the code for seismic design of building, the original input waveform has been processed using SeismoSignal, which is an important procedure in reducing the meshing size requirement when doing the dynamic analysis and to meet the acceleration peak requirements of the seismic intensity 7 in code for seismic design of building, and then the basic parameters properties of the artificial wave has been acquired.The analytical model has been established by using the tech of ANSYS and FLAC3D joint modeling, and then simulated the static reaction of deep foundation pit next to high-rise building under gravity field. Discussed the settlement, displacement and force laws of the model and the supporting system which under the gravity field. The cause of pretension loss in cables have also been discussed, and generated the initial stress field for dynamic analysis.Based on the static simulation results, seismic load time history analysis has been conducted, and quantitative research of dynamic response laws of the model in every second within the time domain of dynamic load has been conducted. Concluded Jin Zhao Yuan Mansion ? seismic response laws according to the seismic code specification of frequent earthquake peak acceleration in field of seismic intensity 7, and discussed the state zone developmental mechanism. Then studied the pile-cable supporting system displacement response laws, and the response laws of the cable axial force and cable grout shear stress.Then acquired the displacement laws of the foundation slab, piles, cables and soil under seismic wave.