Bian Xiao inquired through the architectural knowledge column of "Construction Network", an encyclopedia website of the construction industry, and sorted out the basic situation of culvert construction process. The basic contents are as follows:
Construction technology of slab culvert and passage
1, construction technology
Measuring and setting out → foundation pit excavation → bearing capacity test → foundation treatment → foundation and bottom plate (steel bar installation, formwork installation, concrete pouring and maintenance) → wall steel bar installation, formwork installation and concrete pouring → cover plate steel bar installation, formwork installation and concrete pouring → entrance and exit masonry → plate → waterproof layer → abutment back backfill (layered compaction).
2. Quality management
① Control items: concrete strength (in line with the design requirements), plane position (20mm bright and 50mm dark), bottom elevation (20 mm) and section size (in line with the design requirements).
② Appearance control: the surface is straight and smooth, the settlement joint is neat and vertical, and it runs through from top to bottom.
Construction technology of circular pipe culvert
1, construction technology
Measuring unreeling → trench excavation → cushion → foundation → pipe laying and pipe stabilization → counterpart binding → backfilling (layered compaction).
2. Quality management
① Control items: concrete strength (meeting the design requirements), plane position (50mm), pipe bottom elevation (20mm), slope (meeting the design requirements) and staggered bottom of adjacent pipes (50mm).
② Appearance control: the lines are straight and smooth, and the curves are smooth.
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