What are the precautions for building a supersonic highway?

1. The location of the sound barrier for the highway construction may undergo changes during the construction process. Therefore, prior to construction, the construction and installation units must conduct verification measurements of the column foundation positions and elevations of the highway sound barrier and make any necessary corrections.

During pattern making, the specified civil engineering elevation must be used as the control point.

3. The construction unit for the pre-buried H-shaped steel column components is coordinating the work, with spacing of 2500.

4. Research on anti-corrosion treatment for highway sound barrier columns and installation components is to be conducted.

After the H-shaped steel column is accurately positioned, the vertical error should not exceed 2mm/m.

6. The highway noise barrier's ends are sealed with EVA sponge rubber strips between them and the steel columns. The highway noise barrier is sealed to the foundation with EVA sponge rubber pads.

Ensure the secure installation of highway noise barrier materials when using spring clamps, as they must not loosen due to secondary noise.

Potential road obstructions may include soundproof barriers as foundations, which are difficult to impact. When encountering complex terrains such as cover layers or sandwich layers, appropriate equipment should be prepared to reduce construction time and southern slope. When soundproof barriers at sensitive foundation locations encounter large foundations like transformers, distribution boxes, signal equipment, and contact wire poles, avoidance measures are taken. Effective protective measures are implemented during construction. If underground obstructions prevent reaching the designed pile length, increase the pile diameter, ensuring the pile end diameter is not less than 112m.

The subgrade backfill soil structure is complex, making it difficult to drill bored piles manually. The sensitive points along the subgrade are mostly filled with stones, composed of mountain rocks and sands, which further complicates the manual boring process. To ensure the safety of construction workers and the stability of the slopes, a systematic structural analysis and load calculation can be conducted to implement different segmented management approaches.