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APPLICATION OF STATIC BOLT-PRESSING PILE AND DRAWING OUT SOIL IN DRILLING HOLE FOR DEVIATION RECTIFICATION OF INCLINED BUILDINGS IN SOFT GROUND
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摘要: 对位于上海软土地区某6层砖混住宅采用压桩掏土法纠偏。常规压桩纠偏,先在建筑物较大一侧压桩、封桩;再在建筑物沉降较小一侧掏土纠偏,并在掏土一侧设置少量保护桩,提高建筑物回倾后的稳定性。在该工程的施工过程中,将沉降较大一侧的压桩和沉降较小一侧的掏土纠偏同时进行,并推迟沉降较大一侧的封桩,既缩短了工期,又减小了桩顶的附加应力,同时房屋的附加沉降也控制在允许范围内,取得了较好的纠偏效果。Abstract: The design and construction process of rectifying deviation of a six-story masonry building in Shanghai are presented.For traditional inclination rectification method of static bolt-pressing piles and drilling and drawing out soil,the piles are first jacked by anchor rods in the side of a building with larger settlement,then soil is drilled and drawn out in other side of the building.When the inclination building is rectified,some piles are jacked in the other side to prevent building from inclining.In this project,the piles were jacked while soil was drilled and drawn out.This shortened the construction time,and reduced the additional stress at pile top.And the additional settlement of building was allowed.
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[2] 王爱平,陈少平.黄海翔,等.掏土托换技术在软硬不均地基危房纠偏中的应用.岩石力学与工程学报,2003,22(1):148-152 《地基处理手册》编写委员会.地基处理手册.第二版.北京:中国建筑工业出版社,2003 [3] 温晓贵,魏纲.某软土地基上倾斜建筑物的纠倾与加固实例.土木工程学报,2004,37(8):61-66 [4] 吴兴远,郑树忠.掏土与锚杆静压桩在建筑物纠偏加固中的应用.西部探矿工程,2004,96(5):156-157 [5] JGJ 125-99 危险房屋鉴定标准 [6] GB 50007-2002 建筑地基基础设计规范 [7] 刘毓氚,陈福全,朱长歧.倾斜建筑物的岩土工程综合治理实践.岩石力学与工程学报,2001,20(增1):2 061-2 064 [8] 郑俊杰,张建平,刘志刚.软土地基上建筑物加固及综合纠偏,岩石力学与工程学报,2001,20(1):123-125 -
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