群桩施工中孔隙水压力变化规律及其影响  

The law of pore water pressure caused by clustered piles driving and its influence to the surrounding environment

作　　者：姜朋明[1] 吕云霞[1] 胡中雄[2] 

机构地区：[1]江苏科技大学,江苏镇江212003 [2]同济大学,上海200092

出　　处：《四川建筑科学研究》2008年第5期128-130,共3页Sichuan Building Science

摘　　要：通过对上港二区、正大广场等多个打桩工程中产生的超孔隙水压力实测资料分析,总结出软土地区挤土群桩施工引起的超孔隙水压力积累、分布和消散规律,得到饱和软土群桩施工产生的最大孔隙水压力通常为上覆有效土重的1.0倍,并分析其产生的内在机理;通过对受打桩引起孔隙水压力的影响监测,得到孔隙水压力将对近距离浅层的、轻型构筑物影响最大;对孔隙水压力影响后果及可采取的减少孔隙水压力影响的措施,作了简单归纳和总结。From the autoptical data of pore water pressure during driving piles,the rides of the accumulation, distribution and evanesce of the pore water pressure were summarized. The result shows that the maximum pore water pressure is 1.0 times than upper soil submerged weight. The reason were explained. The influence of pore water pressure to the surround was found. At last, the methods of protecting the surround were suggested.

关 键 词：打桩 孔隙水压力 影响 周围环境 

分 类 号：TU473[建筑科学—结构工程]