基于结构动力学的抗震设计与爆破拆除研究

Analysis of Seismic Design and Blasting Demolition on Structural Dynamics

随着科学技术的不断发展,建筑结构设计的多样化,结构抗震、爆破拆除涉及到多学科和领域,结构动力学中的动力反应与抗震设计相互依存、不可分割。现行结构的抗震设计,只是加大了结构的刚度,没有考虑结构与地震波的动态平衡。通过对振动理论分析动荷载作用下的受迫振动的幅-频曲线和相-频曲线,寻求动力反应各种影响因素的规律,进行建筑物抗震设计方案的研究;拆除废弃建筑物常采用爆破处理,建筑物爆破时间短、效率高,但也产生一系列的负面效应,通过建筑物拆除爆破研究对抗震设计有一定的参考价值。在动力学振动理论与抗震设计研究中发现其与动力反应关系密切,可用于探索建筑结构振动理论,寻求抗震可靠性设计。

With the constant development of the science and technology, the diversification of the design of building structures, seismic, blasting demolition involves muhidisciplinary field, the dynamic response of structural dynamics and seismic design is interdependent, integral and indivisible. Seismic design of the existing structure, only increases the stiffness of the structure without considering the dynamic balance be- tween structure and seismic waves. By vibration theory analysis of forced vibration under dynamic load amplitude-frequency curve and phase-frequency curve and seek the law of the dynamic response of the va- rious factors affecting the seismic design of buildings. With an increase in engineering construction, blas- ting demolition caused more concerned about people, demolish abandoned buildings often blasting treat- ment, the building blasting with short time and high efficiency, but also produced a series of negative effects,by demolition of research on the seismic design of a certain reference value. It＇s explored in the kinetic theory of vibration and seismic design of the dynamic response of a close relationship to explore building structures vibration theory, and it could be applied to seek the seismic reliability design, in blas- ting demolition work, carry out a preliminary theoretical analysis and thinking