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利用建筑物自重对房屋地基进行静压桩加固,近年来在国内开始应用。其方法有两种:一种是直接在基础下设置钢管桩,通过千斤顶压入地基土中,形成桩基,进行托换;另一种是利用固定于基础的锚杆或预埋吊环,在基础上通过千斤顶或手动葫芦将预制钢筋混凝土桩压入地基土中,形成桩基,进行加固。前者传力简捷、直观;后者施工较安全,对压入桩还可预加压力,使桩立即参加工作,有利于减少建筑物的下沉。但是,采用上述两种静压桩法,原建筑
The use of the building’s own weight for the static pile reinforcement of building foundations has begun to be applied in China in recent years. There are two methods: one is to directly set the steel pipe piles under the foundation, press the jacks into the foundation soil to form the pile foundations for underpinning, and the other is to use anchor bolts or embedded rings fixed on the foundation. On the basis, the prefabricated reinforced concrete piles are pressed into the foundation soil through jacks or manual hoists to form pile foundations for reinforcement. The former transmits power simply and intuitively; the latter is safer to construct, and pressure can be added to the piles, so that the piles can immediately participate in the work, which will help reduce the sinking of buildings. However, using the above two methods of static pressure piles, the original building