摘要
大量工程实践资料表明，现行规范对灰土垫层给定承载力设计值明显偏低。对于灰土挤密桩，桩间土的湿陷起始压力Ｐｓｈ值普遍提高２～３倍，建议承载力设计值ｆ应改为不宜超过３５０ｋＰａ，桩间土的Ｐｓｈ值应在地基湿陷性设防上予以充分利用。
As indicated by data of engineering practices, the design values of bearing capacity stipulated for lime soil cushion by the current specifications are obviously on the low side. For lime soil compaction pile the value of initial collapse pressure P sh of soil between piles are generally enhanced 2～3 times. The design value of bearing capacity f should not be more than 350 kPa. The P sh value should be fully used in the precaution of ground collapse.
出处
《工程勘察》
CSCD
北大核心
1999年第5期20-22,共3页
Geotechnical Investigation & Surveying
关键词
灰土垫层
湿陷起始压力
地基加固
lime soil cushion initial collapse pressure ground consolidation
