中文摘要：

通过建立有无建筑物、有车无车、有人无人等多种情况的仿真模型,运用有限元法对高速铁路牵引供电网在铁路沿线和站台产生的工频电磁场进行了数值计算和模拟,分析得出了建筑物、机车和人体对高速铁路电磁环境分布的影响.结果表明建筑物由于距离接触线较远,对电场的屏蔽效果只有11.77％,对磁场的屏蔽作用很小;而机车对电场和磁场的屏蔽效果分别可达到87.66％和31.72％;站台上的人会明显增大电场分布强度,但对磁场分布影响不明显,在无车无建筑情况下站台上的人感应到的工频电场和磁场强度可达到最大值,分别约为3 155.2 V/m和3.72 μT,但均未超过国际非电离辐射防护委员会（ICNIRP）导则限值.此外,结合数值模拟结果还对高速铁路沿线和站台电磁环境的安全性进行了综合评价.

英文摘要：

A simulation model is established in this paper for the conditions of buildings, trains and people, and the finite element method is used to calculate and simulate the frequency electromagnetic fields around the high-speed railway catenary. An analysis is made on the impact of buildings, trains and human bodies on the distribution of electromagnetic environment around high speed railway catenaT. The results show that the building has only 11.77% shielding effect on the electric field due to its large distance from the catenary line, and bas little shielding effect on the magnetic field. The train＇s shielding effect on electric and magnetic field can reach 87.66% and 31.72% respectively. People on the platform also have significantly effect on the distribution of electric field, but have no obvious eftect on magnetic field. When no buildings and trains exit on the platform, the power frequency electric and magnetic fields induced by people on the platform can reach the maximum, 3 155.2 V/m and 3.72 μT respectively, none of which exceed the limit defined in the guidelines compiled by the International Commission on Non-Ionizing Radiation Protection （ICNIRP）. In addition, a comprehensive evaluation is carried out on the safety of electromagnetic environment around high-speed railway and platform according to the results of simulation.