Quality Control of Corrugated Pipe Culvert Construction

Quality control of measurement and layout of corrugated pipe culvert

Before carrying out pipe culvert construction,make sure the longitudinal and transverse axes of the center of the pipe culvert. When excavating the slope of the foundation pit, the excavation boundary of the foundation pit can be set out, and the process according to the specific soil conditions, and the requirements of the specifications and design. The bottom width of the foundation pit should not be less than the foundation size of the culvert.

Quality control of foundation pit excavation on corrugated pipe culvert construction site

When excavating the foundation pit, manual cooperation is used for cleaning. When the mechanical excavation reaches 20cm at the bottom of the foundation, manual cleaning is carried out. If the slope is shallow and has good soil quality, vertical excavation or steep slope should be carried out. If there is water at the excavation site and deeper excavation is required, the slope can be made according to the actual soil conditions.

Quality control of foundation construction of corrugated pipe culvert

When constructing general foundations such as light loam, fine yarn, clay, loam, and fractured rock layers, natural gravel with a certain gradation can be used for replacement work, layer by layer rolling, and the compaction degree meets the design and specification requirements. If it is in a cold and frozen area, the base needs to be filled with non frost heave materials such as sand and gravel. The thickness of the replacement should be a multiple of the thickness of the frozen soil, and should not be less than 60cm.

Connection method on axial direction

When constructing soft soil foundation construction of corrugated pipe culvert, the first step is to follow the treatment method of the soft foundation on the roadbed .Process it and then excavate its foundation. The material used for the foundation is sand and gravel, with a thickness that matches the pipe diameter 0.2-0.6 multiples relationship of 6 times, and cannot be lower than 50cm.

When constructing rock foundations of corrugated pipe culvert, if the height of the fill exceeds 6m, an additional 5cm of over excavation thickness will be required for each additional meter of fill height. The replacement material used is sand and gravel, and the compaction degree meets the design and specification requirements.

Quality control of pipe joint connection and assembly of corrugated pipe culvert

Before construction, the culvert pipe should be inspected first, including the elevation, flatness, and foundation pre arch of the bottom.Set up and determine the position, midpoint, and central axis of the culvert pipe.

Quality control of back filling on both sides and top of corrugated pipe culvert

When back filling on both sides and the top, the materials used must be the same as those used for the foundation replacement. If it is in cold areas, the backfill materials used on both sides and the top must also meet their frost resistance requirements. It is worth noting that in steel corrugated pipe culverts, the compactness of the form work is very important, so when back filling the form work, C15 concrete should be used as the backfill material.

When back filling the sides of the culvert, red paint can be applied to the sides of the corrugated pipe culvert. The method of application is to indicate the height every 15cm, which is conducive to clarifying the height when filling.

During the filling process, it is also necessary to control it according to the marked lines. Within half a meter of the pipe body and surrounding area, hard objects such as stones cannot exceed 50cm During the filling process, the filling and compaction must be carried out to a certain extent.