| Summary: | Taking the noise insulation renovation project of two existing on-ground lines in a city of China as an example, this article introduces a renovation scheme and noise test results before and after renovation in detail. Based on the noise test results pre-renovation, the decision has been made to adopt the scheme of adding fully-enclosed noise barriers for noise reduction. Aligning with the status quo and construction characteristics of the Project, a reasonable renovation design scheme and construction scheme have been selected through comparison, and effective construction protection measures have been taken. This article is significant referential literature for noise insulation renovation for existing rail transit on-ground lines.
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