【作者】 郭影； 李可娜； 白铁钧； 朱广轶；

【Author】 Guo Ying;Li Kena;Bai Tiejun;Zhu Guangyi;Tianjin University;Shenyang University;China Electronics Engineering Design Institute;

【机构】 天津大学； 沈阳大学； 中国电子工程设计院；

【摘要】 地中式油罐由于上部与地平面齐平,侧面一般为回填土,其动力特性及地震作用下的内力及变形区别于地上结构也区别于传统的地下结构,因此必须进行深入的理论分析和试验研究,了解地下结构的内力-变形规律。综合分析流固耦合及土与结构相互作用的现有理论,同时考虑固液耦合与土-结构相互作用,建立了地中式储油罐土-结构-液体相互作用整体体系模型。采用有限元的方法,针对具体模型土-混凝土储液罐-液体体系施加横向地震波,研究其动力响应规律。结果表明最大轴向压应力出现在罐壁中上部的外侧,远小于混凝土材料设计抗压强度,及临界稳定许用应力。最大环向拉应力出现在侧壁中部外侧,大小为1.382 5 MPa小于混凝土材料的许用拉应力。地中式钢筋混凝土储油罐,由于受周围土的约束,比地上结构能承受更大的液体压力,特别适合巨型战略石油储备结构的选型。更多还原

【Abstract】 In-ground concrete tank can not be classified into the ground tank and the traditional underground tank because the top align at the ground plane and the surrounding soil is backfill,therefore its dynamic characteristics and the internal force and deformation under earthquake are different from the ground and underground structures.Therefore in depth theoretical analysis and experimental researches are needed to understand the mechanical rules and failure modes of in-ground structure.Integrated analysis of the existing theories of the fluid interaction and soil structure interaction,meanwhile considering the interaction between solid-liquid coupling with soil-structure interaction,the whole system model of in-ground liquid storage tanks soil-structure interaction was established.Using the finite element method,in view of the concrete model of soil concrete liquid storage tank-liquid system with the application of transverse seismic wave,study the law of dynamic response.The above results show that:the maximum axial compressive stress appears in the upper part of the tank wall,which is much smaller than the compressive strength of the concrete material and the critical stable allowable stress.And the maximum circumferential tensile stress appears at the lateral part of the lateral wall,with size of 1.3825 MPa,which is less than allowable tensile stress of concrete materials.Due to constraints of the surrounding soil,in-ground reinforced concrete storage tanks can sustain greater liquid pressure,particularly suitable for the selection of the giant strategic petroleum reserve structure.更多还原