Tongji Bridge Reconstruction Project after 2 months of fighting, bridge demolition work has entered the stage of completion, project department in the dismantling process, strictly control the construction schedule also attaches great importance to the safe and civilized construction, do the whole Chaiqiao process without dust complaints.
To the construction unit and the public opinion. At present, the bridge construction has entered into the stage of cofferdam construction, due to the new Tongji Bridge construction elevation at 4.0, the excavation depth in the normal water level of the canal below 5.5, construction difficulty is big, before the construction project department seriously organize the design scheme,
Through the expert group of the program demonstration. (outside of the 12 meters long Larsen steel sheet pile, the medial use 12 meters long 8 mm wall thickness diameter 400 steel pipe pile by the long arm of the specialized piling machine in ship vibration down into, internal filling method of cofferdam construction).
Pile pulling operation is currently Tongji Bridge reconstruction project focus on promoting the work, many uncertain factors, difficult, we use 360 degree rotary casing drilling rig is currently on the market similar technology in the most advanced, and the widely used throughout the country. The principle is that
The steel door rotating cylinder pressure into the need to pull around the pile body, in casing and pile body space into the bolt, rotating casing disconnect after removal of the pile body, repeat the removal to the designed elevation using the 360 degree rotation around the casing drilling rig. The pull of 15 800mm piles has been completed.
In addition to and backfill work, to promote the progress of the construction progress of the third machines have been admitted, for the early completion of the work of the old pile.
Due to the process of road construction to ensure the smooth flow of labor Road Traffic east-west direction. Therefore project reasonable arrangements for construction process, advance the construction labor Road east-west direction in the scene (Ponte Vecchio parts). At present, the construction of the roadbed and pipeline is being strained, and the transfer is made in the beginning of 8.
Road construction on both sides. (correspondent Wang Ying)
通濟橋改造工程攻堅克難