饱和黄土地基修建15×10~4 m^3超大型油罐现场充水试验  

Field water-filling test of a 15×10~4 m^3 extra-large oil tank on saturated loess foundation

作　　者：张文新 王旭[2] 蒋鹏程[2] 

机构地区：[1]中国石油西部管道公司,新疆乌鲁木齐830011 [2]兰州交通大学,甘肃兰州730070

出　　处：《油气储运》2015年第11期1219-1224,共6页Oil & Gas Storage and Transportation

摘　　要：为检验工程设计的合理性和保证运行的安全性,针对饱和黄土地区首次修建的15×104 m3超大型非锚固油罐进行现场充水试验,通过在油罐罐壁和环墙基础钢筋表面粘贴应变计在油罐地基埋设沉降计,测试充水过程中的罐壁应力、环墙应力和基础沉降,分析罐壁应力、环墙应力,在基础沉降变形的发展规律。研究表明:充水到最高水位22.2 m时,距离罐底以上3.34 m处罐壁环向应力达到284.9 MPa,罐壁的环向应力随充水水位的增加基本呈线性关系。环墙内侧上部受到油罐传递的压应力,内壁整体受到环墙内垫层传递的压应力,环墙内侧1.0 m处环墙应力最大值为1 091 k Pa。油罐基础的沉降变形大部分为塑性变形,在充水试验结束后能较快趋于稳定,整个底板的沉降呈现碟形分布。研究结果可为超大型储罐在黄土地基的设计和建造中提供技术依据和设计参数验证。In order to identify the rationality of the engineering design and guarantee the safety of operation, a field water- filling test is carried out for the first 15×104 m3 extra-large unanchored oil tank on saturated loess foundation. Strain gauges are pasted on oil tank wall and ring wall foundation steel and settlement sensors are buried in the tank foundation to diagnose the tank wall stress, ring wall stress and foundation settlement during water filling. The test results show that, the maximum circumferential stress reaches 284.9 MPa on the tank wall 3.34 m above the tank bottom when the water is filled up to the highest of 22.2 m, and the relationship between the circumferential stress and the water filling level is approximately linear. The maximum ring wall stress reaches 1 091 kPa on inner wall 1.0 m from the ring wall top because the upper part of the inner tank wall is endured the pressure stress from the oil tank and the whole inner wall is endured the pressure stress from the inner cushion layer. The settlement deformation of oil tank foundation is mostly plastic deformation, and the deformation can quickly become stable at the end of water-filling test. The entire bottom presents as dish-like settlement. The research results can provide technical basis and design parameter validation for the extra-large oil tank in the design and construction on saturated loess ground.

关 键 词：饱和黄土 地基 超大型油罐 充水试验 罐壁应力 沉降 

分 类 号：TE972[石油与天然气工程—石油机械设备]