TB/T 2101-2018 in English

Core changes in the standard revision

Key term analysis

1. Bridge construction machinery

Guide beam through-hole box girder bridge erection machine: Box girder erection equipment using guide beam to assist through-hole, suitable for standard spans below 32m. Typical case: The Zhengzhou-Wanzhou high-speed railway project uses this equipment to achieve an average of 2.5 beam holes per day.

2. Tunnel construction machinery

Multi-mode shield machine: Intelligent equipment that can switch between earth pressure balance and mud water modes to solve the construction problems in composite strata. Application example: The Qinghuayuan Tunnel of Beijing-Zhangjiakou High-speed Railway uses this device to achieve a mode switching time of ≤4 hours.

Implementation suggestions

1. The design phase should strictly refer to the standard terminology system, such as the specification of "track laying host" as track laying machine
2. The procurement contract must indicate the standard terminology code of the equipment, such as ballastless track long rail laying unit (TB/T 2101-2018 3.10)
3. Establish an enterprise-level terminology comparison table to be compatible with the transition period between the old and new standards

Technology evolution analysis

This standard reflects the three major advances in high-speed rail construction technology: ① The improvement of the ballastless track equipment system (5 new types of special equipment); ② The emergence of intelligent construction machinery (such as multi-functional excavation robot); ③ Modular design trend (the proportion of integrated transport and frame equipment increased by 37%).