真空预压中真空度和孔隙水压力测试与分析  

Test and analysis on vacuum degree and pore water pressure in vacuum preloading

作　　者：高志义[1] 梁爱华[1] 刘天韵[1] 

机构地区：[1]中交天津港湾工程研究院有限公司,港口岩土工程技术交通行业重点试验室,天津市港口岩土工程技术重点试验室,天津300222

出　　处：《中国港湾建设》2014年第2期1-6,共6页China Harbour Engineering

摘　　要：对真空、真空度、孔隙水压力、超静孔隙水压力、孔压差、负压等概念进行了阐述和澄清,分别分析了真空度、孔隙水压力现场监测的影响因素,对两者的监测仪器与方法进行了论证,并进行了沿塑料排水板深度为25m、35 m和50 m孔压分布的现场试验。建议地下水位以上采用真空测头、地下水位以下采用孔压计进行监测,以达到事半功倍的效果,监测数据稳定可靠。This paper describes and clarifies some concepts, such as vacuum, vacuum degree, pore water pressure, excess pore water pressure, pore water pressure difference and negative pressure etc., respectively analyzes the influencing factors of vacuum degree and pore water pressure field detection, proves the detecting instrument and detecting method, and makes a field test of pore water pressure distribution with the plastic drainage plate＇s depth of 25 m, 35 m and 50 m. This paper recommends vacuum probe above groundwater level and pore pressure gauge under groundwater level for field detection in order to achieve half the work with double results, stable and reliable monitoring data.

关 键 词：真空度 孔隙水压力 监测仪器 监测方法 真空预压 

分 类 号：U655.544.4[交通运输工程—港口、海岸及近海工程] TU470[交通运输工程—船舶与海洋工程]