中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2011, Vol. 30 ›› Issue (S1): 566-568.DOI: 10.3969/j.issn.1674-0696.2011.supp1.015

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跨越法处理岩溶地基的极限承载力分析研究

姜许辉1,罗晓林1,李协能1,周文斌2   

  1. 重庆地质矿产研究院,重庆400042;2.四JIf省蜀通岩土工程总公司,四川成都61003
  • 收稿日期:2011-05-23 修回日期:2011-06-23 出版日期:2011-07-15 发布日期:2015-03-12
  • 作者简介:姜许辉(1982—),男,河南许昌人,工程师,硕士,主要从事岩土勘察与地质灾害治理方面的工作。E-mail:jianggun@yeah.ne

Ultimate Bearing Capacity of Karst Foundation Treated by Crossing Method

JIANG Xu-hui1 ,LUO Xiao-lin 1,LI Xie-neng1,ZHOU Wei-bin 2   

  1. 1.Chongqing Institute of Geology& Mineral Research,Chongqing 400042,China; 2.Siehuan Shutong Geotechnical Engineering Corporation,Chengdu 610031,Sichuan,Chin
  • Received:2011-05-23 Revised:2011-06-23 Online:2011-07-15 Published:2015-03-12

摘要: 通过分析塌陷体(土层)与周未塌陷地基的相互作用,当采用梁、板跨越法处理时结合极限平衡理论对岩溶 地段塌陷地基极限承载力的计算公式进行推导。对比得出:在采用跨越处理(梁或板)措施时,塌陷体的地基极限 承载力、抗剪强度等是影响周围未塌陷地基土的极限承载力的重要因素。由于粱或板跨越处理时其地基的极限承 载力不同,采取夯实(挤密)措施,梁跨越处理时则可相应提高地基土的极限承载力,而板跨越时地基土极限承载力 效果则不明显利用跨越法处理岩溶地区基础具有一定的实用价值

关键词: 极限平衡理论, 岩溶地基, 极限承载力

Abstract: The interactions of collapsed soil and ground, limiting equilibriuMtheory have been developed to deduce the calculation formula for ultimate bearing capacity of Karsts collapsed foundation. Comparative analysis between beaMand plate spanning is carried out; it is found that the ultimate bearing capacity and shear strength of collapsed soil will play a key role on the uhimate bearing capacity of ground. Owing to the difference of the ultimate bearing capacity, if it is treated with the proper rammed of collapsed soil, the uhimate bearing capacity of foundation will be increased when ground is treated with beaMspanning; nevertheless, the ground ultimate bearing capacity will be not obvious when ground is treated with plate spanning. These results will provide practical value for the design and construction of karst foundation treated by crossing treatment.

Key words: limiting equilibriuMtheory, karst foundation, ultimate hearing capacity

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