The article discusses problems of safety coefficient caused by open welding of shieldbeam.
对掩护梁发生开焊而引发的安全系数问题进行了探讨。
2
Because the model has provided the foundation to determine the key parameters of modified routine method and beam-spring method, calculation of shield tunnel segment becomes more rational.
该接头刚度模型为梁-弹簧模型法和修正惯用法中的关键参数确定提供了基础，管片的内力计算也更加合理。
3
The processing features of parallel spinning and the design of conjugated spinning beam with double shield melt canal are introduced in detail.