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随着重载列车的开行和列车速度的提高，下承钢板粱横向振幅超过《检规》现象普遍发生，危及行车安全。上海铁路局工务处通过理论计算和现场加固试验，采用加强下平联方法，有效地解决了这一问题。
With the opening of heavy-haul trains and the increase of train speed, the lateral amplitude of steel beams under the load exceeds the “check” phenomenon, which threatens traffic safety. Shanghai Railway Bureau Office through theoretical calculations and on-site reinforcement tests, the use of enhanced parallel method, effectively solve this problem.