[1]刘璇,杨永强,胡进军,等.武汉交通学校群楼爆破拆除塌落振动分析[J].地震工程与工程振动,2019,39(01):158-165.[doi:10.13197/j.eeev.2019.01.158.liux.018]
 LIU Xuan,YANG Yongqiang,HU Jinjun,et al.Collapse vibration analysis of blasting demolition of Wuhan traffic school group building[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(01):158-165.[doi:10.13197/j.eeev.2019.01.158.liux.018]
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武汉交通学校群楼爆破拆除塌落振动分析
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年01
页码:
158-165
栏目:
论文
出版日期:
2019-02-28

文章信息/Info

Title:
Collapse vibration analysis of blasting demolition of Wuhan traffic school group building
作者:
刘璇1 杨永强1 胡进军1 谢礼立12
1. 中国地震 局工程力学研究所, 中国地震局地震工程与工程振动重点实验室, 黑龙江 哈尔滨 150080;
2. 哈尔滨工业大学 土木工程学院, 黑龙江 哈尔滨 150090
Author(s):
LIU Xuan1 YANG Yongqiang1 HU Jinjun1 XIE Lili12
1. Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, CEA, Harbin 150080, China;
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
关键词:
群楼爆破拆除塌落振动峰值频谱
Keywords:
group buildingblasting demolitioncollapse vibrationpeak valuespectral characteristics
分类号:
TU416.6+13
DOI:
10.13197/j.eeev.2019.01.158.liux.018
摘要:
为了分析一次性爆破拆除多栋建筑造成的地面振动的特征及对周边建筑物的影响,对武汉交通学校群楼爆破拆除中的地面振动进行了测量,并对实测的塌落振动的峰值、频谱特性进行分析。结果表明:此次监测记录到的峰值频率在5~10 Hz,对比高架桥以及单一高层结构爆破拆除数据,倒塌叠加使得振动能量在频谱上分布更加离散,其峰值频率与周边结构自振频率相差变大,周边建筑共振的危险性降低;对于周围的结构而言,水平振动持时大于竖向振动,但水平振动幅值明显小于竖向振动;爆破塌落振动的竖向分量对周围结构的威胁较大,应采取有效的缓冲及隔振措施;由《爆破安全规程》和周边建筑爆破前后主振频率分析可知,本次爆破拆除工作未对周边建筑造成破坏性影响,验证了群楼爆破拆除方案的高效性和安全性。
Abstract:
In order to analyze the characteristics of ground vibration caused by demolition of several buildings by one-off blasting and its influence on surrounding buildings, the ground vibration during blasting demolition of a group of buildings in Wuhan Jiaotong School was measured, and the peak value and spectrum characteristics of the measured collapse vibration were analyzed. The results show that the peak frequency is 5~10 Hz, comparing with the demolition data of viaduct and single high-rise structure, collapse superposition makes the distribution of vibration energy more discrete in frequency spectrum, the difference between predomination frequency and natural frequency of surrounding structure becomes larger, and the danger of surrounding building resonance is reduced; For the surrounding structures, the duration of horizontal vibration is longer than that of vertical vibration, but the amplitude of horizontal vibration is obviously smaller than that of vertical vibration; The vertical component of blasting collapse vibration is a great threat to the surrounding structure, so effective measures of buffering and vibration isolation should be taken. According to the "blasting safety regulations" and the main vibration frequency analysis of surrounding buildings before and after blasting,which verifies the high efficiency and safety of the blasting demolition scheme,the blasting demolition work has not caused destructive effect on surrounding buildings.

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相似文献/References:

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 LIU Jin,YANG Yongqiang,YAO Yingkang,et al.Measurement and analysis of vibration caused by blasting demolition of high-rise RC building[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2018,38(01):198.[doi:10.13197/j.eeev.2018.05.198.liuj.023]

备注/Memo

备注/Memo:
收稿日期:2018-06-05;改回日期:2018-09-10。
基金项目:国家重点研发计划(2017YFC1500602);国家自然科学基金项目(51308516);中国地震局创新团队发展计划
作者简介:刘璇(1994-),男,硕士研究生,主要从事地震动特征研究.E-mail:770857202@qq.com
通讯作者:杨永强。E-mail:yangiem@foxmail.com
更新日期/Last Update: 1900-01-01