Bridge seismic tension rod, incorporating various anti-seismic measures such as chain fall prevention, longitudinal tension rod, damper, rubber washer, seismic stopper, and support bracket.
Bridge Seismic抗震Tie Rod Construction Process
During the construction of seismic tie rod retaining walls, the masonry work and subgrade filling compaction should be carried out simultaneously. When the ground level reaches 50cm above the metal corrugated pipe, first compact the soil, then excavate the trench, lay the pipe, and then backfill. After the corrugated pipe is installed, proceed with the steps of inserting anchor bolts, grouting, adding steel washers, tightening nuts, and sealing the anchors in sequence.
Bridge Seismic Anchor Rod Construction Precautions
1. Prior to construction, proper ground drainage should be ensured. The foundation pit should not be excavated in its entirety; instead, skip excavation and timely segmented masonry construction methods must be employed. Additionally, enhanced drainage measures and contingency plans should be implemented, and temporary support during construction should be strengthened as needed.
2. Backfilling for retaining wall's face and toe must strictly follow the design specifications. Depending on the location, choose either crushed stone or sandy gravel for backfilling. If there's a significant gap between the backfill and ground level, fill with cobblestone as per subgrade requirements for masonry路基. For toe backfill, use cobbles or rounded pebbles, ensuring their size is not easily washed away by floodwaters.
3. The construction of 3-layer anchor bolts should proceed sequentially from the bottom layer. The installation and sealing of the anchor bolts in the lower layer must be completed before constructing the next layer's embankment and filling work. In particular, the grouting process must be carried out from the edges towards the center to ensure compactness at both ends. Utilize the anchor bolts and retaining walls to form an integrated unit, thereby enhancing the overall stability of the retaining wall.
