锤击沉桩施工对土层孔隙水压力影响的试验研究

Experimental Study of Pile-sinking Construction with Hammering on Influence of Pore Water Pressure in Soils Around

通过现场试验,研究了锤击法沉桩对周边土孔隙水压力的影响。试验结果表明,锤击法沉桩会引起桩周粘土层孔隙水压力急剧上升,但在第二天就能基本消散掉。粉砂、粉土层由于有较好的排水特性,孔隙水压力的增长相对要小得多。

Base on the field test, the influence of pile-sinking with hammering method on the pore water pressure in soils around is studied. The test results show that the pore water pressure can be increased rapidly due to pile-sinking with hammering method, but it can be scattered nearly on the second day. There is fewer increase of the pore water pres-sure in sand and silt layers as a result of the good drainage characteristics.