Dynamic Security Analysis Of Frame Structure Encountering Blasting Seismic Wave

Developing with the project blasting technology which brings the remarkable economic efficiency, it has become one of the most competition methods in the construction blasting industry. Though blasting procedure brings the high economic efficiency and the project blasting enterprise while develops vigorously, it has many problems. The influence of the environmental damage caused by blasting procedure reveals prominently day by day. For example, dissemination in the geological material and function to the underground structure by blasting earthquake wave often cause the structure damage in varying degree, even appears serious consequence of the structure disarrangement . The damage initiates many civil dispute, which has hindered the development of blasting enterprise. Therefore, the topic regarding the blasting earthquake effect research as well as the demolition safety control aspect receives the widespread attention . This article has conducted the research to dynamic response of frame construction, and has made the appraisal about its security under the blasting effect.This paper has consulted massive domestic and foreign literature about the blasting function to the house, and has analyzed the present domestic and foreign research present situation in detail and the insufficiency, and aimed at the question which the paper had to solve to study the related theory knowledge. The theory includes rock demolition mechanism, the rule of stress wave production and weaken in rock demolition process. It has analyzed relational model, mechanics model of each constituent in the frame integration vibration system, as well as the step and the principle of the construction dynamic response using finite element method.This paper mainly utilizes non-linear finite element method to establish the finite element three dimensional integrated model of rock blasting and frame house dynamic response .It simulates blasting operating mode, Blasting dynamic load is input in the blasting hole directly, and the model has been carried on the non-linear finite element dynamic analysis. Then we obtain the natural frequency of the system, inspiring, whole distortion situation in various stages of the increase time course as well as the frame house dynamic response character. This paper selects the routine earthquake wave and inputs frame house. It carries on the dynamic analysis of several kinds of situations in houses, and obtains information of structure force, structure distortion. Analysis and comparison are performed to make the appraisal of...