Key points for assembly of corrugated panels in bridge culverts: Design construction procedures for panel assembly, organize the sequence of panels rationally, design board sizes for ease of transportation and installation while minimizing the number of bolts; attempt to position connections away from areas of equivalent and tangential stress concentration; control shear stress of bolts with tangential stress.2Bridge Reinforcement Corrugated Culvert Assembly Precautions: First, prepare the installation tools, simple lifting equipment, sleeve spanner, torque-tightening electric wrench, torque-tightening wrench, ensure an adequate supply of scaffolding, planks, and power supply at the construction site. Pre-installation tasks: Check the elevation and longitudinal slope of the bottom of the steel corrugated pipe culvert; determine the position, central axis, and midpoint of the corrugated culvert pipe. Assemble the bottom steel corrugated plate: Use the central axis midpoint as the reference point, position the first corrugated plate, and extend from this point to both sides until the ends. The overlap length is50mmFor the connecting holes, the bolts are inserted from the inside to the outside into the hole positions. A washer is placed on the outer side, and the nut is tightened using a specific impact wrench socket wrench. Assembly of the arch-shaped steel corrugated pipe: Assemble in order from bottom to top: The circumferential connection uses a stepped design, with a lap length of50mmThe connection overlap between the two upper plates and the two lower plates is misaligned. After aligning the connection holes, insert bolts from the inside to the outside of the holes and pre-tighten the nuts using a special wind gun sleeve wrench. When assembling the circumference to the annular joint, measure the cross-sectional dimensions, adjust the pre-tightened bolts promptly, and correct the assembled top corrugated plate to ensure the cross-sectional dimensions meet requirements.