某大型圆形事故池的结构模拟分析  

Analysis for Structural Simulation of One Large-Size Circular Accident Pool

作　　者：关筱语 李梅[1] Guan Xiaoyu;Li Mei(CCCC First Harbor Consultants Co.,Ltd.,Tianjin 300220,China)

机构地区：[1]中交第一航务工程勘察设计院有限公司,天津300220

出　　处：《港工技术》2023年第3期63-67,87,共6页Port Engineering Technology

摘　　要：本文简述了传统工程软件PKPM在计算某大型圆形事故池时的局限,即不能模拟施工期偏挖工况以及使用期的受力情况;对比了有限元ABAQUS与PKPM在开挖期间最不利工况,即二者总体相差不大,有限元模拟结果略小于工程软件PKPM;验证了偏挖方案的不可行,故应严格把控施工质量,控制挖方高差,均匀开挖;验算了事故池使用期的各种极端工况,论述了事故池中衬砌存在的重要意义,即防渗、增加事故池整体刚度、避免地连墙产生环向拉应力、减小地连墙的竖向弯矩等。Due to the limitations of the traditional engineering software PKPM applied in the calculation of a large circular accident pool,it is hard to simulate partial excavation work-conditions during the construction period and the stress conditions within the service.By comparing finite element ABAQUS with PKPM under the most unfavorable excavation conditions,it is found that a little difference exists between the above two,the finite element simulation results are slightly smaller than PKPM results,and the partial excavation plan is verified to be unfeasible.In the case,it is necessary to control the construction quality strictly,reduce the excavating height difference through even excavation.Various extreme work-conditions within the service are checked and calculated,the significance of the lining for the accident pool is discussed,including seepage prevention,increment of overall rigidity of the accident pool,avoidance of the hoop tensile stress of concrete diaphragm wall,and a reduction in vertical bending moment of concrete diaphragm wall.

关 键 词：大型事故池 PKPM ABAQUS 偏挖 使用期 衬砌 

分 类 号：U652.7[交通运输工程—港口、海岸及近海工程]