【作者】 赵岩；

【导师】 肖仪清； 汪四新；

【作者基本信息】 哈尔滨工业大学 ， 结构工程， 2008， 硕士

【摘要】 近年来,我国城市化速度逐步加快,城市建设规模越来越大。爆破技术在城乡建设中的应用也变得越来越广泛了。爆破施工给周边环境和人们的正常生活带来了很多不利影响,从而受到更多关注。过去,我们常以质点峰值振速为安全判据,但是这种评价体系由于其片面性己经越来越不能满足当前工程爆破震动安全的要求了,从而有必要更深入的研究。本文以爆破地震波的特征及相关因素为切入口,对深圳市留仙洞场平工程爆破震动测试结果分析:一方面分析了本场地爆破地震波的传播特点;另一方面通过回归分析求得爆破地震波衰减的经验公式,并得出适合本工程采用的不同区段的安全用药量,从而为进一步有效控制爆破地震动造成的危害提供参考。为了能比较直观地反映建筑物对爆破地震动的响应,本文运用ANSYS有限元分析软件建立多层框架结构的三维计算模型,对其进行结构动力响应时程分析。首先,通过现场实测得到爆破地震波,以调整后的地面波为结构震动输入,采用时程分析法得到的结果与实测结构响应两方面来说明结构的震动响应特点。然后分别计算了天然震波和爆破地震波作用下顶层水平位移的时程曲线、水平位移沿楼高的分布曲线以及顶层加速度的时程曲线。进一步指出与天然地震相比,爆破震动对框架结构的破坏力较小,但对人来说震感强烈。由此,最后本文还进引入烦恼率模型来探讨爆破震动环境下人体舒适度问题,并提出建议考虑加速度限值,以控制爆破对人体的不适影响。更多还原

【Abstract】 Along with the explosive technique in the city and countryside construction’s gradual application, the harm of the demolition vibration has been extensive attention more and more. In the past, we regard the particle peak value as the security criterion. But this kind of appraisal system is unilateral, more and more could not satisfy the current project demolition vibration security the request. Therefore, this article will begin from the demolition earthquake wave’s parameter. Comprehensive discussion demolition earthquake wave each related parameter to building dynamic action characteristic.In view of the fact that demolition earthquake wave is particularity. Firstly this article introduced the demolition earthquake wave characteristic and the correlation factor. Then kept the immortal hole field even project demolition vibration test in view of Shenzhen to demolish the earthquake wave the characteristic to carry on the elaboration. And we can obtain the empirical formula through the regression analysis the coefficient.This article utilizes the finite element analysis software establishment multistory building structure the three dimensional computation model. Carries on the structure dynamic analysis to it, and used the time interval analytic method to carry on the earthquake to respond the analysis. Has calculated the natural seismic wave and under separately the demolition earthquake wave action the top layer horizontal curve, horizontal departure along building high distribution curve as well as top layer acceleration time interval curve. The computed result indicated that uses the ANSYS software establishment three-dimensional model, can good carry on the structure the vibration response analysis, and to the demolition designers to provide the reference. Hence, this paper also introduced annoyance rate to evaluate human comfort under the environment of the blasting vibration, considering the acceleration threshold to control the blasting effect of discomfort.更多还原