CAJ | 학술논문

为了研究钢结构建筑物的磁场特征，基于相似性定律制作了典型钢结构建筑物的磁性物理缩比模型。并进行了磁场测量试验，分离出了缩比模型的感应和永久磁性的磁场特征。基于缩比模型试验数据，建立了基于磁矩量法的钢结构建筑物磁场特征数学模型，并分析了其衰减特性。一座边长12 m的立方体钢结构建筑物磁场特征评估分析表明，在建筑物一侧0～100 m的地面上，其磁场特征幅值从6400 nT迅速下降为0．005 nT，在建筑物周围100 m之外的区域产生的磁场已可忽略不计。本研究采用物理模型和数值模拟相结合的手段，实现了钢结构建筑物磁场特征的定量分析。该技术适用于磁测量设施周边建筑物干扰磁场的精确评估，具有较高实用价值。
위료연구강결구건축물적자장특정，기우상사성정률제작료전형강결구건축물적자성물리축비모형。병진행료자장측량시험，분리출료축비모형적감응화영구자성적자장특정。기우축비모형시험수거，건립료기우자구량법적강결구건축물자장특정수학모형，병분석료기쇠감특성。일좌변장12 m적립방체강결구건축물자장특정평고분석표명，재건축물일측0～100 m적지면상，기자장특정폭치종6400 nT신속하강위0．005 nT，재건축물주위100 m지외적구역산생적자장이가홀략불계。본연구채용물리모형화수치모의상결합적수단，실현료강결구건축물자장특정적정량분석。해기술괄용우자측량설시주변건축물간우자장적정학평고，구유교고실용개치。
In order to research the magnetic signatures generated by the steel structure buildings, a ferromagnetic physical scale model based on a typical steel structure building was made on the basis of the law of similarity. In ad-dition, a measurement test was conducted at the magnetic fields, the magnetic signatures of the model's induced and permanent magnetizations were separated. Based on the test data of the scale model, a mathematical model of the steel structure building's magnetic signatures was established by applying the magnetic moment method,and the attenuation properties was analyzed. The evaluating results of the magnetic signatures generated by a cubic steel structure building with a side length 12 m showed that, on the ground 0 to 100 m away from one side of the build-ing, the amplitude of the magnetic signatures decreased from 6 400 nT to 0.005 nT rapidly, while the magnetic sig-natures beyond 100 m away from the buildings was negligible. By combining the physical model and the numerical simulation results, the research realized a quantitative analysis of the magnetic signatures of the steel structural building. The technique is applicable for accurate evaluation of the magnetic distributions from a building around a magnetic measurement facility and the practical value is quite high.