复杂条件下V形框架结构楼房的爆破拆除

介绍了闹市区一座V形框架结构楼房的爆破拆除。在综合考虑楼房结构特点和环境条件的基础上 ,采用了同层断面阶梯形分段、不同层以高差与时差相结合的爆破设计方案 ,这一起爆顺序能有效地利用结构自重控制楼房的坍塌范围。同时介绍了三维非电导爆管起爆网络形式。这些方法对类似楼房的拆除爆破设计具有参考价值。

BLASTING DEMOLITION OF A V-SHAPE F RAME BUILDING IN COMPLEX SURROUNDI NGS

In this paper，blasting de molition of a V-shape frame buildi ng in a downtown area is introduce d.Based on analyzing the structura l features and surroundings of the building，a blasting scheme of usin g a detonating sequence of “ladder ”type for the same floor and a det onating sequence of combining heigh t difference with time difference （half-second delay） for different floors is adopted.This detonating sequence can effectively control t he collapsing distance of the buil ding by its potential energy.At th e same time，a three-dimensional ig nition network composed of NONEL s ystem is presented.These are usefu l for blasting demolition design o f similar buildings.