高层建筑下大面积整体筏板基础沉降原位测试分析.pdf
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第34 卷 第6 期 岩 土 工 程 学 报 Vol.34 No.6
2012 年 .6 月 Chinese Journal of Geotechnical Engineering June 2012
高层建筑下大面积整体筏板基础沉降原位测试分析
1, 2 1, 2 1, 2 1, 2
宫剑飞 ,石金龙 ,朱红波 ,周圣斌
(1. 中国建筑科学研究院,北京 100013;2. 建筑安全与环境国家重点实验室,北京 100013)
摘 要:原位测试结果表明,大底盘高层建筑的受力状态及变形特征与相连的第一跨裙房基础密切相关,其具备在两
个刚度及荷载相差较大的结构形式下所形成的不同地基应力状态之间进行平缓调整的能力。对于常规工程而言,大底
盘高层建筑下地基压缩层计算深度可取高层建筑基础宽度的 1.2 倍;整体大面积筏板基础变形控制条件可按以下限值控
制:高层下整体挠曲最大限值不超过0.5‰,与高层整体连接的第一跨裙房与高层建筑的沉降差最大限值不超过0.001l,
裙房其它柱间沉降差最大限值不超过0.002l 。
关键词:整体大面积筏板基础;原位测试;沉降;变形控制
中图分类号:TU471 文献标识码:A 文章编号:1000 –4548(2012)06 –1088 –06
作者简介:宫剑飞(1970 –) ,男,辽宁沈阳人,博士,研究员,从事高层建筑箱筏基础和地下结构工程的研究。E-mail:
gjfcabr@263.net 。
In-situ tests on settlement of large-
under tall buildings
GONG Jian-fei1, 2, SHI Jin-long1, 2, ZHU Hong-bo1, 2, ZHOU Sheng-bin1, 2
(1. China Academy of Building Research, Beijing 100013, China; 2. State Key Laboratory of Building Safety and Built Environment,
Beijing 100013, China )
Abstract: The results of in-situ tests show that the stress state and deformation characteristics of a tall building with large-area
raft foundation are closely related to the foundation of the first span podium. The building has the ability to adjust different
ground stress states caused by different structural rigidities and loads between the tall building and podiums. For the
conventional projects, the calculated depth of subsoil compressible stratum under large-area thick raft foundation under the tall
building is about 1.2 times the width of its foundation. The deformation control conditions of lar
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