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整体大面积筏板基础沉降特点及筏板弯矩计算

宫剑飞, 侯光瑜, 周圣斌, 郑文华

宫剑飞, 侯光瑜, 周圣斌, 郑文华. 整体大面积筏板基础沉降特点及筏板弯矩计算[J]. 岩土工程学报, 2014, 36(9): 1631-1639. DOI: 10.11779/CJGE201409009
引用本文: 宫剑飞, 侯光瑜, 周圣斌, 郑文华. 整体大面积筏板基础沉降特点及筏板弯矩计算[J]. 岩土工程学报, 2014, 36(9): 1631-1639. DOI: 10.11779/CJGE201409009
GONG Jian-fei, HOU Guang-yu, ZHOU Sheng-bin, ZHENG Wen-hua. Settlement characteristics and calculation of bending moment for large-area thick raft foundation under tall buildings[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(9): 1631-1639. DOI: 10.11779/CJGE201409009
Citation: GONG Jian-fei, HOU Guang-yu, ZHOU Sheng-bin, ZHENG Wen-hua. Settlement characteristics and calculation of bending moment for large-area thick raft foundation under tall buildings[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(9): 1631-1639. DOI: 10.11779/CJGE201409009

整体大面积筏板基础沉降特点及筏板弯矩计算  English Version

基金项目: 国家“十二五”科技支撑计划项目(2012BAJ07B01)
详细信息
    作者简介:

    宫剑飞(1970- ),男,辽宁沈阳人,博士,研究员,从事建筑地基基础和地下结构工程的研究。E-mail: gjfcabr@263.net。

  • 中图分类号: TU471

Settlement characteristics and calculation of bending moment for large-area thick raft foundation under tall buildings

  • 摘要: 在相似地质条件下,与体量相似、荷载大小相近的常规基础形式的高层建筑相比,大底盘高层建筑平均沉降量大幅减少;竣工后的后期沉降占总沉降量比例小,一般不超过20%;沉降稳定时间短,通常竣工后1年左右沉降即达到稳定。当高层建筑挠曲值不超过0.2‰,且筏板的抗裂度大于或等于2时,高层下筏板可仅考虑局部弯矩作用,整体弯矩可通过构造措施处理;高层建筑挠曲值超过0.2‰,或筏板的抗裂度小于2时,筏板须考虑整体弯矩作用。
    Abstract: Under similar geological conditions, the settlement of integrated tall building with large area raft is more greatly reduced than that of single tall building with similar size and loading. Compared to that of the single tall building at later period after completion, the settlement of the integrated tall building is smaller, generally less than 20% of the total amount. The settlement of the integrated tall building usually becomes stable about one year after its completion. When the integral flexure of plate-raft foundation is no more than 0.02% and the crack resistance of raft foundation is no less than 2, only the local bending moment should be taken into consideration in the design of plate-raft foundation, and the integral bending moment is ensured through structural measures. When the integral flexure of plate-raft foundation is more than 0.02% or the crack resistance of raft foundation is less than 2, the effects of the local and integral bending moments should be considered.
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出版历程
  • 收稿日期:  2013-11-28
  • 发布日期:  2014-09-21

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