港工技术
港工技術
항공기술
PORT ENGINEERING TECHNOLOGY
2014年
3期
65-67
,共3页
天津港%真空预压%监测%检测
天津港%真空預壓%鑑測%檢測
천진항%진공예압%감측%검측
Tianjin Port%vacuum preloading method%monitoring%detection
天津港陆域真空预压施工过程中对地表沉降、分层沉降、孔隙水压力等进行监测。采用双曲线法推算固结度，提供卸载依据；分析原海底以下土层沉降量，得到原海底以下土层沉降量占总沉降量的31.9%；由孔隙水压力消散规律了解软基的加固机理；真空预压前后进行钻探取土室内土工试验及现场十字板剪切试验，分析各土层物理力学指标及十字板强度的变化情况，对地基处理效果进行评价。
天津港陸域真空預壓施工過程中對地錶沉降、分層沉降、孔隙水壓力等進行鑑測。採用雙麯線法推算固結度，提供卸載依據；分析原海底以下土層沉降量，得到原海底以下土層沉降量佔總沉降量的31.9%；由孔隙水壓力消散規律瞭解軟基的加固機理；真空預壓前後進行鑽探取土室內土工試驗及現場十字闆剪切試驗，分析各土層物理力學指標及十字闆彊度的變化情況，對地基處理效果進行評價。
천진항륙역진공예압시공과정중대지표침강、분층침강、공극수압력등진행감측。채용쌍곡선법추산고결도，제공사재의거；분석원해저이하토층침강량，득도원해저이하토층침강량점총침강량적31.9%；유공극수압력소산규률료해연기적가고궤리；진공예압전후진행찬탐취토실내토공시험급현장십자판전절시험，분석각토층물리역학지표급십자판강도적변화정황，대지기처리효과진행평개。
The ground settlement,layered settlement and pore water pressure has been monitored during the vacuum preloading construction Tianjin Port land area. Dual-curve method is used to calculate the degree of consolidation,provide unloading basis and analyse the settlement of the layer under original seabed. The analysis results show that the above mentioned settlement accounts for 31.9%of the total settlement. The mechanism of soft base reinforcement has been realized through the dissipation law of pore water pressure;Before and after the vacuum preloading construction,bore-hole sampling,indoor geotechnical test and field vane shear test are carried out in order to analyze the physical and mechanical indices of soil layers and the change of vane strength,and evaluate the soft base reinforcement effect.
