基于ANSYS/LS-DYNA的矿区地下巷道三维动力响应分析*
刘书贤1,刘少栋1,魏晓刚2,3,麻凤海4

(1.辽宁工程技术大学 建筑工程学院,辽宁 阜新 123000; 2.郑州航空工业管理学院 土木建筑工程学院,河南 郑州 450046; 3.中国地震局工程力学研究所 中国地震局地震工程与工程振动重点实验室,黑龙江 哈尔滨 150080; 4.大连大学 建筑工程学院,辽宁 大连 116622)

地下巷道; 动力响应; 有限元分析; 地震作用; ANSYS/LS-DYNA

3D Dynamic Response Analysis of Underground Tunnels in Mining Area based on ANSYS/LS-DYNA
LIU Shuxian1,LIU Shaodong1,WEI Xiaogang2,3,MA Fenghai4

(1. College of Architecture and Civil Engineering,Liaoning Technical University,Fuxin 123000,Liaoning,China)(2. College of Civil Engineering and Architecture,Zhengzhou Institute of Aeronautical IndustryManagement,Zhengzhou 450046,Henan,China)(3. Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of EngineeringMechanics,CEA,Harbin 150080,Heilongjiang,China)(4. College of Civil Engineering and Architecture,Dalian University,Dalian 116622,Liaoning,China)

underground tunnel; dynamic response; finite element analysis; seismic action; ANSYS/LS-DYNA

备注

为研究煤矿地下巷道在地震作用下的动力响应,考虑巷道结构的损伤效应,基于显式算法的土结构体系动力学方程,建立ANSYS/LS-DYNA三维数值模型,并在模型指定位置设置观测点。通过观测点的动力响应特征研究巷道的动态响应。结果 表明:巷道在地震作用下,半拱形巷道应力主要分布在拱帮和墙角立板、底板处,且拱帮和墙角处塑性体积应变明显,巷道墙角处的损伤明显大于其他各部,是巷道容易发生破坏的部位。

In order to study the dynamic response of underground tunnel in coal mine area under the action of earthquake,considering the damage effect of the tunnel structure and the soil structure dynamic equation based on explicit algorithm,we established the 3D ANSYS/lS-DYNA numerical model,and set the observation point in the specified location in the model. Through studying the dynamic response characteristic of observation point,we analyzed the dynamic response characteristics of the roadway. The results show that under the seismic action,the stress of semi arch roadway mainly distribute in the arch help,the stand plate and bottom plate of the corner of the wall,and the plastic volumetric strain is obvious at the arch help and at the corner of the wall,the damage in the corner of the roadway which is easy to damage significantly is greater than that of other ministries.