22层楼房爆破拆除震动监测分析
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摘要
介绍了昆明市东风东路22层框剪结构办公大楼爆破拆除的地震动及周边建筑监测成果,根据爆破工程场地范围内的建筑结构类型、分布位置、该爆破工程三切口分段式爆破的特点布置了地震动测试点及测线,对地震动地面加速度、速度时程曲线、功率谱、震动记录特征、振动强度地面分布及衰减特征进行了分析,并结合实测数据就爆破振动对周边环境影响的安全判据进行了对比;此外对周边临近建筑进行了常规的变形及裂缝监测,为完善爆破拆除对周边环境的影响分析及纠纷鉴定提供了辅助数据。
The monitoring of blasting vibration near surrounding building during explosive demolition of 22-storey frame-shear wall structure at east of Dongfeng road of Kunming city was introduced.The monitoring point was set up based on the structure types,distribution position and characteristics of three-incision sectional blasting method.Then the vibration acceleration,speed history-time curve,power spectrum,vibration recording characteristic,distribution of vibration intensity and attenuation characteristics were analyzed.In addition,the safety criterion of blasting vibration influence on surrounding environment was discussed combined with test data.Furthermore,the conventional deformation and fracture monitoring were also made to provides auxiliary data for the safety evaluation of surrounding building.
The monitoring of blasting vibration near surrounding building during explosive demolition of 22-storey frame-shear wall structure at east of Dongfeng road of Kunming city was introduced.The monitoring point was set up based on the structure types,distribution position and characteristics of three-incision sectional blasting method.Then the vibration acceleration,speed history-time curve,power spectrum,vibration recording characteristic,distribution of vibration intensity and attenuation characteristics were analyzed.In addition,the safety criterion of blasting vibration influence on surrounding environment was discussed combined with test data.Furthermore,the conventional deformation and fracture monitoring were also made to provides auxiliary data for the safety evaluation of surrounding building.
引文
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[3]张玉明,张奇,白春华,等.爆炸振动测试技术若干基本问题的研究[J].爆破,2002,19(2):4-6.[3]ZHANG Yu-ming,ZHANG Qi,BAI Hua-chun,et al.Re-search on some fundamental problems on measuring andtesting techniques of explosion vibration[J].Blasting,2002,19(2):4-6.(in Chinese)
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[5]程康,徐学勇.爆破振动频率对振动效应影响的试验研究[J].爆破,2003,20(3):79-81.[5]CHENG Kang,XU Xue-yong.Experimental research oninfluence of blasting vibration frequency on its vibrationeffect[J].Blasting,2003,20(3):79-81.(in Chinese)
[6]郭献芳,赵丽.采矿爆破振动对地面建筑影响的鉴定及其结论解读[J].工程爆破,2010,16(2):73-75,85.[6]GUO Xiang-fang,ZHAO Li.Identification of impact onground buildings caused by mining blasting vibration andinterpretation of its conclusion[J].Engineering Blasting,2010,16(2):73-75,85.(in Chinese)
[2]韦林,朱金龙,汪浩.上海四平大楼爆破拆除中环境振动监测的分析[J].爆破,2006,23(12):74-77.[2]WEI Lin,ZHU Jin-long,WANG Hao.Analyses of environ-mental vibration monitoring during the demolition blastingof Shanghai siping building[J].Blasting,2006,23(12):74-77.(in Chinese)
[3]张玉明,张奇,白春华,等.爆炸振动测试技术若干基本问题的研究[J].爆破,2002,19(2):4-6.[3]ZHANG Yu-ming,ZHANG Qi,BAI Hua-chun,et al.Re-search on some fundamental problems on measuring andtesting techniques of explosion vibration[J].Blasting,2002,19(2):4-6.(in Chinese)
[4]张成良,梁开水,唐海.预裂爆破减振作用效果分析[J].爆破,2003,20(2):17-19.[4]ZHANG Cheng-ling,LIANG Kai-shui,TANG Hai.Analy-sis of effect of shock-absorption in presplit blasting[J].Blasting,2003,20(2):17-19.(in Chinese)
[5]程康,徐学勇.爆破振动频率对振动效应影响的试验研究[J].爆破,2003,20(3):79-81.[5]CHENG Kang,XU Xue-yong.Experimental research oninfluence of blasting vibration frequency on its vibrationeffect[J].Blasting,2003,20(3):79-81.(in Chinese)
[6]郭献芳,赵丽.采矿爆破振动对地面建筑影响的鉴定及其结论解读[J].工程爆破,2010,16(2):73-75,85.[6]GUO Xiang-fang,ZHAO Li.Identification of impact onground buildings caused by mining blasting vibration andinterpretation of its conclusion[J].Engineering Blasting,2010,16(2):73-75,85.(in Chinese)
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