储罐充水预压速率对软基固结影响研究  

STUDY OF THE IMPACT OF TANK WATER-FILLING PRE-COMPRESSING RATE ON SOFT SOIL CONSOLIDATION

作　　者：程旭东[1] 赵丽明[1] 于晓玮[1] 

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266555

出　　处：《低温建筑技术》2011年第10期90-92,共3页Low Temperature Architecture Technology

摘　　要：储罐充水预压时,软土地基中超孔隙水压力的形成和消散与充水速率有着密切的关系。本文基于BIOT固结理论,采用Mohr-Coulomb理想弹塑性模型,采用大变形分析,并结合某一沿海油库工程,应用ADI-NA软件,模拟了储罐充水预压的过程,分析了不同的充水加载速率对储罐软基超孔隙水压力形成和消散的动态影响,以及由此产生的沉降和不均匀沉降,验证了软基利用超孔压和荷载比值来控制加荷速率的经验方法的合理性。Pore-pressure formation and abreaction have a close relationship with the water-filling pre-compressing rate.Based on the BIOT consolidation theory,combined with a coastal oil depot project,this paper simulate the pre-compressing process.Dynamic influences of the pre-compressing rate on the pore-pressure formation and abreaction and the resulting settlement and uneven settlement are analyzed,and the method of water-filling pre-compressing rate control based on the ratio of pore-pressure and presser is proved to be reasonable.

关 键 词：充水预压法 加载速率 超孔隙水压力 沉降 

分 类 号：TU471.8[建筑科学—结构工程]