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2. 发明专利

JPH10311023A IMPROVEMENT METHOD FOR FOUNDATION SUBSOIL 失效
公开(公告)号：JPH10311023A
公开(公告)日：1998-11-24
申请号：JP11973197
申请日：1997-05-09
申请人： KAJIMA CORP , JUTAKU TOSHI SEIBI KODAN
发明人： FUKAZAWA EIZO , AKITA SHOICHI , HARAMOTO TOSHIAKI , KAMATA KATSURO , HAYASHI HIROSHI , KATO KENJI , YAMASHITA MASARU , FUJITA MICHIO
IPC分类号： E02D3/12
摘要： PROBLEM TO BE SOLVED: To improve a weak subsoil into a stable foundation subsoil by applying the constitution that a plurality of rows of vertical solidified walls reaching prescribed depth from ground surface are erected along one or two directions in a subsoil requiring an improvement at prescribed intervals, and a plurality of layers of horizontal solidified walls are constructed between the vertical solidified walls so as to be integrated therewith. SOLUTION: A plurality of rows of vertical solidified walls 1 are erected at prescribed intervals along one direction within a subsoil A likely to be subjected to liquefaction. Also, an upper horizontal solidified board 2a and a lower horizontal solidified board 2b are respectively laid between the upper ends of the vertical solidified walls 1 and 1 and between the lower ends thereof, so as to be integrated therewith. As a result, bearing capacity against a vertical load is increased, and the travel of underground water and the earth is prevented. At the same time, the transmission of excessive pore water pressure from a lower layer is intercepted. In this case, the arrangement, shape, depth, thickness or the like of the vertical solidified walls 1, the upper and the lower horizontal solidified boards 2a and 2b is determined on the basis of such a condition as an earthquake scale, subsoil strength or the like. For example, the vertical solidified walls 1 may be erected along two directions like plane grating. According to this construction, a subsoil likely to be subjected to liquefaction can be stabilized.

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