非连续梁地下室墙柱裂缝有限元分析  

Finite Element Analysis of Wall-column Crack in Discontinuous Beam Basement

作　　者：蒋志军[1] 胡阐 刘新健[1] 刘柏江 Jiang Zhijun;Hu Chan;Liu Xinjian;Liu Bojiang

机构地区：[1]重庆市建筑科学研究院有限公司,重庆400016 [2]四川农业大学土木工程学院,四川雅安625014

出　　处：《重庆建筑》2022年第9期38-42,共5页Chongqing Architecture

摘　　要：为研究某项目的地梁滞后施工时地下室墙柱开裂的原因,运用ABAQUS软件,采用土侧压力作用下非连续梁地下室墙柱混凝土损伤塑性模型,进行有限元分析。结果表明:由于地梁滞后施工,缺乏支撑作用,地下室外墙梁在土侧压力作用下,钢筋达到屈服,混凝土产生过大变形损伤而开裂,有限元分析中的裂缝开展位置、裂缝形式、裂缝宽度等情况与实际检测结果吻合度较好。表明CDP模型参数取值可靠,有限元分析结论合理,研究可为具体的加固处理实践提供一定理论依据。In order to study the cracking causes of a basement’s wall-column in the delayed construction of the ground beam, an finite element analysis is carried out by using ABAQUS software and the damage plastic model for wall-columnconcrete of the discontinuous beam basement under the lateralaction of soilpressure. The analysis showed that due to the delayed construction of the ground beam and the lack of support, and the exterior wall beam, under the lateralaction of soilpressure, makes the reinforcement yield, and the concrete cracks due to the excessive deformation and damage.The crack development position, crack form, crack width and other phenomena are in good agreement with the actual detection results, indicating that parameters of the CDP model in this paper are reliable and the finite element analysis conclusion is reasonable. It provides a theoretical basis for the specific reinforcement treatment.

关 键 词：塑性损伤 土侧压力 裂缝分析 有限元 

分 类 号：TU375[建筑科学—结构工程]