At about 3:00 p.m. on November 1, the middle span of the main bridge of Fulong Xijiang Super Major Bridge, known as the "First Bridge in Foshan", will be closed as the steel box girder of the closure section M27 lifts the position of the closure bottom plate. Liu Long, a law enforcement officer of the Gaoming Maritime Department who was on guard at the construction site, said that the closure operation was expected to be completed around 8:00 p.m. on the first day.
At 2:30 p.m., Xiao Bian saw on the patrol boat at the downstream of Fulong Xijiang River Bridge that the crane lowered the slings on the 30 meter high bridge deck. Under the operation of the construction personnel, the steel box girder to be lifted in the closure section M27 slowly rose. After several adjustments, the lifting is stopped when reaching the height of the installed bottom plate on the bridge deck, and the whole process lasts about half an hour.
The middle span of the main bridge of Fulong Xijiang Super Major Bridge was closed by the temperature difference closure method. Before that, the constructors had observed the temperature, weather and other data at the closure opening for 48 hours. "When the steel box girder of the closure section is lifted below the closure opening, the lifting shall be stopped." The relevant person in charge of the bridge construction shall introduce that, wait for the coldest temperature of the day, then insert the closure section into the closure opening, keep it level with the bridge height and weld it, and then the entire lifting operation can be completed.
It is understood that the Fulong Xijiang Super Major Bridge has a total length of 5.81km, with one main bridge and two hub interchanges. Its controlling project, Fulong Xijiang Super Major Bridge, is a double tower double cable plane steel UHPC composite girder cable-stayed bridge with a main span of 580m. The bridge has a total length of 1770.6m, which is the longest span bridge in Foshan at present. Its construction water area has always been a high risk area for water traffic accidents, Every time the box girder is hoisted for construction, Gaoming Marine Department will send patrol ships and guard ships to maintain construction operations at the construction site, and remind passing ships to drive according to the specified route one by one through VHF or flag language.
It is reported that since the construction of Fulong Xijiang Super Large Bridge was started in September 2019, Gaoming Maritime Affairs Department has prepared the Work Manual for Fine Supervision of Bridge Construction and Navigation Safety of Gaoming Maritime Affairs Department in combination with the actual safety supervision work, to help bridge safety construction through fine supervision, and to implement only control but not seal the water traffic control measures in the construction waters, The orderly navigation of any ship is not affected.
"The Fulong West River Bridge has been under construction on the water for four years. The smart maritime department has focused on the essence of safety, precise service and pair building, and has set out the safety supervision responsibility area of the party members' 'red square'." The staff said that the closure of the middle span of the main bridge of the Fulong West River Bridge means the successful completion of the bridge construction project on the water, and the maritime department has ensured the safety of navigation of ships in the construction waters, The goal of "zero accident, zero casualty, zero sinking and zero loss" has been achieved in the whole process.
