Temporal Analyze On Teamwork Response Of Frame And Foundation Loading Blasting Earthquake Wave

Blasting technology has found an increasingly wide utilization in construction, but the demolish of blasting is so great and can't renew that can't conduct a scene test. Consequently it is an important way of guarantee construction safety to simulate engineering reality with computer technology. Blasting earthquake wave is a kind of load effect that causes larger damage to construction in blasting load. This thesis carried out research about the production of blasting earthquake wave and its influence to frame structure and estimate the safety of frame structure loading blasting earthquake wave.To study the various performance of earthquake wave through theory analysis and observation is the main way to estimate explosion earthquake effect. This paper research the essential performance of explosion earthquake effect and its amplitude, period, duration, as well as the relationship between damage effect together with intensity and the factors such as dynamite equivalent distance and geologic condition, and then put forward an effect method of artificial simulation.This text utilizes finite element method set up slope rock deep hole blasting models of some power station, use three-dimensional finite element entity unit model , and make time history analysis when going on of blasting earthquake. Analyze the stress and deformation characteristic of blasting rock hole in some distance ,obtain displacement time history curve, then use Fortran language differentiating two times to displacement and obtain the blasting earthquake wave .Finally this paper make temporal analyze on the teamwork response of frame and foundation loading blasting earthquake wave. Compare the response of teamwork system and rigid connect substructure respectively loading blasting earthquake wave and conventional earthquake wave, and then obtain the following conclusion : 1) There is heavy difference of the structure under the function of blasting earthquake wave and routine earthquake (tectonic earthquake ), because the function time is short, though acceleration of peak value is much heavier than the routine earthquake, but the dynamic response of the structure reflects is not very big. Unless analyze time history, it could go on the overall assessment of safety. 2) After interaction, under earthquake function, the dynamic characteristic and earthquake response of the structure not only depends on the rigidity of structure, but also have close relations with the ground characteristic, the basic form, etc... Because ground soil and foundation participate work, it have remarkable influence to earthquake response of top structure its. And the softer the ground soil is, the more obvious the interaction result is...