This utility model belongs to the field of deep foundation pit
stairs, specifically disclosing a standardized staircase for deep foundation pits, including
diagonal braces, vertical braces, and treads. The treads are spaced apart and constructed as a stepped structure. Each
tread has holes on its surface for
water seepage. Mounting shafts are located at both ends of the treads, and these shafts are mounted to the
diagonal braces via snap-fit fasteners. A positioning
assembly is also included, comprising a shaft
assembly fixedly mounted to the end of the mounting shaft. The shaft
assembly has an extension portion with evenly distributed circumferential breaks on the extension portion. A connecting rod is detachably mounted on the axis of the shaft assembly. The connecting rod can rotate along the axis of the shaft assembly and extends radially along the shaft assembly, engaging with the breaks. A column is also mounted at the end of the connecting rod, and the column is mounted to the
diagonal brace via snap-fit fasteners. By setting the treads as a standardized
single plate, compared to the conventional method of using double steel pipes with nailed shelves, installation and removal are more convenient, and the anti-slip effect is better.