Noise protection walls along the new B174 between Gornau und Chemnitz

As part of the construction of the new B174 by the Leipzig branch, Rädlinger Ingenieurbau built ten noise protection walls with a total length of approximately 3,850 m in the section from Gornau-Chemnitz from August to December 2013.

Along the route, the noise protection walls were built on a foundation of bored piles and ramming pipes. Due to the large number of bored piles (approx. 800) and the very short construction period, Rädlinger Ingenieurbau used the “in front of the wall” drilling procedure for this project. The “in front of the wall” procedure is usually used for securing the excavation pit and was used for the first time for the foundations of noise protection walls for this project. This procedure meant time savings of 50 per cent. The infill of the walls used concrete elements that are highly absorbent on one side and on both sides, in accordance with the tender.

In the course of the project, noise protection walls were built on existing bridges and supporting walls. In order to be able to meet the client’s high requirements for sound absorption here too, transparent, absorbent elements from the Clearwall system were used in Germany for the first time.

 

Facts & figures

  • Construction period: August to December 2013
  • Total length 3,850 m
  • Bored pile foundations: 3,100 m
  • Ramming pipe foundations: 1,450 m
  • Steel posts: 1,119
  • Concrete base: approx. 2,900 m²
  • Concrete elements that are highly absorbent on one side and on both sides approx. 15,300 m²
  • Acrylic glass elements: approx. 900 m²
  • Service doors: 5

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