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基础托换是城市地铁穿越建筑物时为保护建筑物所采取的最经济、快捷和安全的施工方法。在广州市轨道交通三号线广州东站及站后折返线施工中开发的动载桩基托换的施工技术,以及托换开挖工作中微振动控制爆破施工技术的实施,有效避免了对既有建筑物的危害和保证了既有线的正常运营。
Underpinning is the most economical, fast and safe method of construction for protecting buildings as urban metro traverses buildings. The construction technology of underpriced foundation underpinning developed in the construction of Guangzhou East Railway Station and the post-station return line of Guangzhou Metro Line 3 and the implementation of micro-vibration controlled blasting construction technology during underpinning excavation effectively avoid The hazards of existing buildings and to ensure the normal operation of existing lines.