群罐充水预压加载方式对地基变形的影响研究  

Influencial Study of Water-Falling Pre-compression Loading Method of Storage Tank Group on Foundation Displacement

作　　者：程旭东[1] 赵丽明[1] 胡晶晶[1] 马钰 

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 [2]东营市胜建集团建安工程处安装队,山东东营257000

出　　处：《勘察科学技术》2011年第5期1-4,54,共5页Site Investigation Science and Technology

摘　　要：在天然软土地基上建造储罐群时,不均匀沉降的控制是关键。为了防止地基在试水过程中失稳,必须严格控制分级加载过程。由于工期的要求,对储罐群的加载方式不同,或同时加载,或分别加载。该文根据群罐在最优间距作用下,由于充水加荷方式的不同对罐基沉降和不均匀沉降的影响进行分析,详细论述了地基地表土、深层土的沉降和侧向位移以及由此产生的油罐地基的平面倾斜与非平面倾斜。结果表明同时加载地表土和深层土沉降小于分别加载,在实际工程中建议采用同时加载。When constructing storage tank group on natural soft soil foundation, the control of differential settlement is very important. In order to prevent the instability of foundation during the water-falling process, the step-loading nmst be strictly controlled. There are two methods including loading simultaneously and loading respectively considering the time limit. This paper analyzes the impact of two methods on settlement and differ- ential settlement of the foundation of tank group at optimum location spacing. The settlements of topsoil, deep- soil and lateral displacement are presented, the planar inclination and non-planar inclination caused by settle- ment are also described. The results indicate that loading simultaneously is better than loading respectively, and it suggests adopting loading simultaneously in practical engineering.

关 键 词：油罐地基 充水预压 不均匀沉降 加载方式 

分 类 号：TU472.33[建筑科学—结构工程]