饶飞;王国波;
RAO Fei;WANG Guo-bo;Hubei Key Laboratory of Roadway Bridge & Structure Engineering,Wuhan University of Technology;

• 1:武汉理工大学道路桥梁与结构工程湖北省重点实验室

摘要(Abstract)：

针对现行地下结构设计规范只对人防等爆炸冲击荷载进行了规定,但是并没有考虑塌落触地冲击荷载影响的问题;对比分析了人防荷载与拆除爆破塌落触地冲击荷载对邻近地下结构造成的影响;首先介绍了人防荷载和塌落触地冲击荷载,并分析影响塌落触地冲击荷载的关键因素,再根据工程实际将塌落触地冲击荷载与人防荷载进行对比计算分析。结果表明:在所选取的对地下结构有利的塌落触地工况下,当结构埋深较小时,塌落触地冲击荷载大于相应的人防荷载,说明在进行建筑拆除时需要考虑塌落触地冲击对地下结构的影响。
In view of the fact that the current code for design of underground structures only stipulates the impact load of civil air defense and other explosions, and does not consider the impact load of collapse. The influence of civil air defense load and demolition blasting collapse impact load on adjacent underground structure is analyzed. Firstly, the civil air defense load and the impact load of collapse are introduced, and the key factors affecting the impact load are analyzed, then according to the engineering practice, the impact load of the collapse and the civil air defense load are compared computational analysis. The results show that under collapsed ground contact conditions that are beneficial to the undergound structure the impact load on the ground is greater than the corresponding civil air defense load when the buried depth of the structure is small, it is indicated that the impact on underground structure should be considered when demolition blasting the buildings.

关键词(KeyWords)： 拆除爆破;地下结构;塌落冲击;人防荷载;冲击压力
demolition blasting;underground structure;collapse impact;civil air defense load;impact pressure

Abstract:

Keywords:

基金项目(Foundation): 武汉市城建局科技计划资助项目(201945)

作者(Authors): 饶飞;王国波;
RAO Fei;WANG Guo-bo;Hubei Key Laboratory of Roadway Bridge & Structure Engineering,Wuhan University of Technology;

参考文献(References)：

• [1] 陈小坚,李海华.拓展建设“节约型城市”的新思路,合理开发利用城市地下空间——访中国工程院院士钱七虎先生[J].现代城市研究,2005,20(6):14-16.CHEN X J,LI H H.Expanding the new idea of building a "conservative city",rationally developing and utilizing the urban underground space-an interview with Mr.Qian Qihu,Academician of the Chinese Academy of Engineering [J].Modern City Research,2005,20(6):14 -16.
• [2] 王晓睿,张树君,黄至全.基于地表冲击荷载作用下的城市地下空间结构动力响应分析[J].岩土力学,2012,33(9):2 869-2 874.WANG X R,ZHANG S J,HUANG Z Q.Analysis of dynamic response of urban underground space structure based on surface impact loading[J].Rock and Soil Mechanics,2012,33(9):2 869-2 874.
• [3] 蔡路军,朱方敏,吴亮,等.上穿公路隧道偶然爆炸对下方供水隧洞影响研究[J].地下空间与工程学报,2013,9(5):1 197-1 200.CAI L J,ZHU F M,WU L,et al.Study on the influence of accidental explosion of upper tunnel on the lower water supply tunnel[J].Chinese Journal of Underground Space and Engineering,2013,9(5):1 197-1 200.
• [4] 孙金山,蒙云琪,倪明亮,等.紧邻地下结构拆除爆破工程的缓冲减振措施[J].工程爆破,2020,26(5):52-56.SUN J S,MENG Y Q,NI M L,et al.Vibration damping measures for the blasting project adjacent to underground structure demolition[J].Engineering Blasting,2020,26(5):52-56.
• [5] KONESHWARAN S,THAMBIRATNAM D P,GALLAGE C.Blast response and failure analysis of a segmented buried tunnel[J].Structural Engineering International,2015,25(4):419-431.
• [6] DE A,MORGANTE A N,ZIMMIE T F.Numerical and physical modeling of geofoam barriers as protection against effects of surface blast on underground tunnels[J].Geotextiles and Geomembranes,2016,44(1):1-12.
• [7] HASSAN B M ,HABIB S ,MOHAMMAD K .Mitigation of surface impact loading effects on the underground structures with geofoam barrier:Centrifuge modeling[J].Tunnelling and Underground Space Technology,2018,80:128-142.
• [8] ZHAO H,YU H,YUAN Y,et al.Blast mitigation effect of the foamed cement-base sacrificial cladding fortunnel structures[J].Construction & Building Materials,2015,94:710-718.
• [9] 国家人民防空办公室.轨道交通工程人民防空设计规范:RFJ 02-2009 [S].北京:中国计划出版社,2009.National Civil Air Defense Office.Civil air defense design specification for rail transit engineering:RFJ 02-2009 [S].Beijing:China Planning Press,2009.
• [10] 国家人民防空办公室.人民防空工程设计规范:GB 50225-2005 [S].北京:中国计划出版社,2005.National Civil Air Defense Office.Designcode for civil air defense engineering:GB 50225-2005[S].Beijing:China Planning Press,2005.
• [11] 中华人民共和国建设部.人民防空地下室设计规范:GB 50038-2005[S].北京:中国计划出版社,2005.Ministry of Construction of the People's Republic of China.Code for design of civil air defense basement :GB 50038-2005 [S].Beijing:China Planning Press,2005.
• [12] 汪旭光,于亚伦.拆除爆破理论与工程实例[M].北京:人民交通出版社,2008.WANG X L,YU Y L.Demolition blasting theory and engineering example [M].Beijing:People's Communications Press,2008.
• [13] 白冰.土的动力特性及应用[M].北京:中国建筑工业出版社,2016.BAI B.Dynamic characteristics and application of soil[M].Beijing:China Building Industry Press,2016.