爆破2025，Vol.42Issue(3)：9-17,9.DOI:10.3963/j.issn.1001-487X.2025.03.002
框架结构楼房定向爆破倒塌后坐与触地振动联合控制技术研究
Integrated Control Technology for Recoil and Ground Impact Vibration in Directional Blasting-induced Collapse of Frame-structured Buildings
摘要
Abstract
With the increasing complexity of the urban environment and environmental awareness of the public,directional toppling blasting demolition of frame structure buildings often encounters the problems of large collapse recoil distance and strong ground impact vibration,which limits the development and application of blasting demoli-tion technology.To control the collapse recoil and touchdown vibration of the directional blasting demolition of the frame structure building,the design method of the hinge point forward high blasting cutting was put forward,and the theoretical calculation model of blasting cutting height was established based on traditional bottom cutting blasting demolition technology.Meanwhile,a blasting demolition technology of high-cutting blasting with a reserved buffer lay-er was developed combined with engineering practice.Three kinds of blasting cutting forms were designed to meet the control requirements of different degrees of collapse recoil and touchdown vibration according to the treatment method of the reserved buffer layer.Furthermore,the collapse and disintegration effects of frame structure blasting demolition in different blasting schemes are compared and analyzed by theoretical analysis,numerical simulation,and field test.The results show that the hinge point forward high blasting cutting can increase the inclination angle,prolong closure time,and control the structure's collapse recoil and touchdown vibration,greatly improving the reliability of structural instability and collapse.Compared with the traditional bottom-cutting blasting scheme,the reserved buffer layer hinge point forward high-cutting blasting scheme can effectively shorten the length of the blasting pile,reduce the speed of structural collapse to the ground,and effectively control the height of the blasting pile.The selection of a reserve buff-er layer should be considered comprehensively with the structural characteristics of the building and the surrounding environment.关键词
爆破拆除/框剪结构/倒塌后坐/触地振动/爆破效果Key words
blasting demolition/frame shear structure/collapse recoil/touchdown vibration/blasting effect分类
建筑与水利引用本文复制引用
黄小武,贾永胜,袁方,陈德志,伍岳,刘昌邦..框架结构楼房定向爆破倒塌后坐与触地振动联合控制技术研究[J].爆破,2025,42(3):9-17,9.基金项目
中国工程院战略研究与咨询项目(2023XZ35) （2023XZ35）
国家自然科学基金项目(52478525) Strategic Research and Consulting Project of Chinese Academy of Engineering(2023XZ35),National Natural Science Foundation of China(52478525) （52478525）
