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Temporal Analyze on Teamwork Response of Frame and Foundation Loading Blasting Earthquake Wave

Author: LiXiu
Tutor: WeiWenZuo
School: Wuhan University of Technology
Course: Structural Engineering
Keywords: Seismic wave Foundation and framework for collaborative work system Time history analysis
CLC: TU311.3
Type: Master's thesis
Year: 2004
Downloads: 275
Quote: 10
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Abstract


In the rapid development of the national economy, the excavation of the rock foundation of the city high-rise buildings, the construction of large hydropower station construction, the construction of underground structures and a variety of Demolition blasting technique has been widely used in the current technical conditions, blasting The method is the most competitive, most economical and reasonable method of construction. Blasting bring high economic efficiency at the same time, blasting pollution more obvious each day impact on the environment, such as seismic wave propagation in geological materials and on the role of the underground structure, often caused the structure varying degrees of damage. This negative effect, if not effectively control often be a security risk. The building blasting seismic effect under the action of the security has increasingly become the subject of the need to be solved. The framework structure of blasting seismic wave generation and seismic wave analysis of the anti-knock properties of the frame structure, and frame structure safety assessment of Blasting Seismic Wave. Study the various characteristics of the seismic waves through theoretical analysis and observation approach is to estimate the main method of explosion seismic effects. This article on the basic characteristics of the explosion seismic waves, including the displacement amplitude, period, duration, such as epicentral distance relationship with the explosion seismic effects were studied, and a simple and effective artificial simulation of seismic wave. And the finite element method to establish a the slope rock deep hole blasting model, generation of blasting seismic process simulation obtained from boreholes within a certain distance of a point of the rock mass acceleration time curve, ie the seismic wave. This article focuses on the acquired seismic wave input frame and the foundation, the basis of collaborative working system of Blasting Seismic Wave framework and foundation work together reaction time history analysis. And the framework and foundation basis of collaborative work systems were in blasting seismic waves and conventional earthquake waves role of the force and deformation characteristics were compared and analyzed, the following conclusions: 1) blasting seismic waves under the structure of power reaction with conventional seismic wave (tectonic earthquake ) under the action of the structure of the dynamic response are quite different, blasting seismic wave due to the short duration of action, although the peak acceleration than conventional seismic wave is much larger, but the dynamic response of the structure is not large. Only its analysis, in order to conduct a comprehensive assessment of its safety; 2) to consider the framework and foundation, the basic work together, under seismic action, the dynamic characteristics and seismic response depends not only on the stiffness of the structure itself, and and the foundation characteristics form the basis of a close relationship. Due to the participation of the foundation soil and foundation, its upper structure seismic response (including displacement reactions and internal forces of reaction) had significant effects. And the foundation soil is softer the interaction effect is more obvious.

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CLC: > Industrial Technology > Building Science > Building structure > Structure theory to calculate > Structural Mechanics > Structural Dynamics
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