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随着桥梁拆除工程的不断增多,桥梁拆除过程的安全事故不断发生。为提高拆除效率并减少类似安全事故,笔者总结了传统的桥梁拆除方法及其缺点,介绍了近几年国内外出现并适用于桥梁拆除的混凝土拆除新技术和新机具。着重介绍了其中的超高压水枪、高效钻孔设备、金刚石圆盘锯、金刚石绳锯和液压劈裂机。最后介绍了几个新工具在桥梁拆除工程中的应用实例,可为设计既有桥梁的拆除方案提供参考。
With the continuous demolition of bridges, safety accidents in the process of bridge demolition continue to occur. In order to improve dismantling efficiency and reduce similar accidents, the author summarizes the traditional methods of bridge dismantling and their shortcomings. The paper introduces the new technologies and new tools of dismantlement concrete that appear in the world and are applicable to bridge dismantlement in recent years. The super high pressure water gun, high efficiency drilling equipment, diamond disc saw, diamond wire saw and hydraulic splitting machine are introduced emphatically. Finally, some application examples of the new tools in the bridge demolition project are introduced, which can provide references for the design of the existing bridge demolition schemes.