在改建扩建工程中,原有建筑结构物的拆除,国内大多采取控制爆破、静态爆破、燃烧剂爆破、微差爆破等技术。这些方法固然可行,但需消耗大量炸药(或破碎剂),需打眼、放炮设备,较费工费时,同时需要专业技术工种,非一般土建单位所能胜任。我们曾在几项工程中,由于缺乏爆破机具、炸药、专业工种,同时考虑到拆除量不大,根据现场具体机具、场地条件,采用了一种非爆破拉倒拆除方法,经实践,效果良好,现作一简介。一、基本原理与方法 In the reconstruction and expansion project, the demolition of the original building structure, the majority of domestic use of controlled blasting, static blasting, combustion explosives, millisecond blasting and other technologies. Although these methods are feasible, they require a large amount of explosives (or breakers). They require drilling and firing equipment. They are more time-consuming and labor-intensive. At the same time, they require professional and technical types of work, and non-general civil engineering units are competent. In the past few projects, due to the lack of blasting equipment, explosives, and specialized types of work, taking into account the small amount of demolition, a non-bursting and pull-down demolition method was adopted according to the specific equipment and site conditions at the site. Now make a brief introduction. First, the basic principles and methods