The three mark park bridge of Cao Shang road is on the east side of S232, using the assembled partially prestressed concrete continuous box girder, the first 5 x 35m across the San Shan port (Xin Gou River) in fourth span and one span; the second is a single span simply supported box girder with a length of 26.9m, and the third to the fifth couplet uses 5 x 35+2 x (4 * 35) m to cross the Central Park; the sixth couplet uses 35+35+3 0.9m, in the third span 30.9m is the average length of the beam; seventh, eighth of 2 x (5 x 35) m in the first, second span with the piers, two span across the normal highway, and finally the bridge across the normal highway after the landing.
The quality of bridge construction is the key to the whole bridge. The semi - vase column and cover beam of the substructure of the bridge substructure are all constructed with machining fixed steel formwork (such as drawing). As the height of each row of columns of the bridge is different, the steel formwork of one meter group is also processed at the bottom of the steel template at the bottom of the column. There are more splicing at this one meter height. Before the construction of the column, we used the simulated column pouring method to test the test column in the construction site. The project department has poured the test columns several times to sum up the construction experience. It is required that the concrete color difference be consistent, the edges and corners clear and the seam tight. The construction of the cover beam is also concerned with the details of the construction.
All mud pool and excavated foundation pit in the construction of bridge bored pile and bearing platform beam are all protected by enclosure, and the bare soil is covered with green net to prevent dust. The construction of sidewalks is reinforced by concrete to ensure the passage of construction machinery and reduce the impact of rainy season on construction progress. Site safety signs, warning signs, danger signs and so on are properly set up for suspension, requiring safe construction and civilized construction.
In the construction of bored cast-in-place pile, in the top of the cage and the broken pile head part of the reinforcement cage, the pearl cotton sleeve is set on the top bar of the steel cage, and the failure section of the reinforced concrete is used as the failure section when the bored pile head is broken, so that the pile head can be quickly removed and the steel bar is not easily deformed. The use of pearl cotton bushing can save labor and ensure construction quality.
In the late construction of the bridge, the project department will continue to manage the quality control, safety, civilization and so on. In the construction, the project will constantly improve and strive for the excellent project. |
