| 天津津塔工程超大深基坑施工技术 |
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| 引用本文： | 田贺维,周予启,刘卫未.天津津塔工程超大深基坑施工技术[J].施工技术,2010,39(1). |
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| 作者姓名： | 田贺维 周予启 刘卫未 |
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| 作者单位： | 中建一局集团建设发展有限公司,北京,100012 |
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| 摘 要： | 天津津塔工程建筑高度336.9m,是目前华北地区最高建筑.其基坑面积19 764m2,基坑开挖深度达-32.1m.工程整体采用顺作法.周边围护结构采用两墙合一的地下连续墙和双圆环钢筋混凝土内支撑体系,支撑立柱采用钻孔灌注桩内插角钢格构柱形式.止水帷幕和基底加固采用高压旋喷桩,解决了基坑抗渗和土体加固问题;大小环岛式土方开挖技术配合旋转坡道,解决了土层软且基坑开挖深度深问题;支撑结构"闷拆"保证了主体结构正常向上施工;信息化手段可保证及时调整施工方案,保证超大、超深基坑安全稳定施工.
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| 关 键 词： | 天津津塔 基坑 地下连续墙 双圆环内支撑 高压旋喷桩 信息化 |
Construction Technology of Super Large and Deep Foundation Excavation in Tianjin Tower |
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| Tian Hewei,Zhou Yuqi,Liu Weiwei.Construction Technology of Super Large and Deep Foundation Excavation in Tianjin Tower[J].Construction Technology,2010,39(1). |
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| Authors: | Tian Hewei Zhou Yuqi Liu Weiwei |
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| Affiliation: | Tian Hewei,Zhou Yuqi,Liu Weiwei(China Construction First Division Group Construction & Development Co.,Ltd.,Beijing 100012,China) |
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| Abstract: | Tianjin Tower,with height of 336.9 meters,is the highest building in North China,whose foundation excavation area is 19 764 square meters and excavation depth is 32.1 meters.Sequential construction method is adopted in integral structure.Diaphragm wall is used as surrounding structure during construction and external wall of basement when the project is completed.Furthermore,the double circle reinforced concrete internal support is decided,and bored piles filled with angle iron lattice column are used as su... |
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| Keywords: | Tianjin Tower foundation excavation diaphragm wall double circle internal support high-pressure jet grouting pile information |
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