Track is the foundation of crane or car running smoothly, generally requires checking 2 ~ 4 times every year.
轨道是起重机或小车平稳运行的基础，一般要求每年检查2 ~ 4次。
2
The contact zone width of crane wheel with track is analyzed by plane stress elastic theory.
采用平面应力弹性理论，对吊车车轮与轨道的接触区尺寸进行理论分析。
3
To walk after fixed tower crane should remain on track, such as fixed position in backfill soil, the foundation for special treatment, must meet the load requirements.