The erection of steel truss girder of the hottest

Hunan: Aizhai super large suspension bridge steel truss girder erection start

Hunan: Aizhai super large suspension bridge steel truss girder erection start

China Construction machinery information

Guide: on the morning of April 10, from Aizhai, Jicha expressway, but the Group believes that good news came from the super large suspension bridge construction site, and the steel truss girder erection of the most important node of Aizhai super large suspension bridge construction was officially started, This marks that the construction of Aizhai bridge has entered the stage of girder erection. At 9:40 a.m., Zheng dulian, academician of the Chinese Academy of Engineering

at 9:40 a.m., Zheng dulian, an academician of the Chinese Academy of engineering, was invited to attend the ceremony and expressed congratulations. Chen Mingxian, counselor of the Hunan provincial government and commander of the Aizhai bridge headquarters, Li Jian, member of the Party committee and chief engineer of the provincial Senior Management Bureau, Peng Jianguo, President of the Provincial Communications Design Institute, Chen Guoping, director of the bidding Office of the Bureau and executive deputy commander of the Aizhai bridge headquarters, Yu Bo, manager of Jicha company and deputy commander of the Aizhai bridge headquarters, and Li Weiguo, mayor of Jishou City, attended the launching ceremony. China bridge, Xiangxi TV station and other media gathered at the jishouan construction site to witness the start of steel truss erection

Chen Mingxian delivered a speech at the erection ceremony. He recalled the process from design to construction of the Aizhai bridge, and expressed his heartfelt thanks to the front-line builders of the project and the support of governments at all levels and all sectors of society. He stressed the need to continue to strengthen quality and safety to ensure the successful completion of the Aizhai bridge on time

then, Zheng dulian and Chen Mingxian cut the ribbon for the girder erection ceremony of Aizhai bridge together. That is, a 192 ton steel truss beam moved towards the middle of the span at a speed of 3 meters per minute with the permission of the test piece under the pull of the traction cable

it is understood that the main truss of Aizhai super large suspension bridge is composed of 69 segments. The "rail cable moving beam" technology used in its erection is the first time to be used in the construction of long-span suspension bridges, which will fill a gap in the world bridge construction technology

"rail cable moving beam method" is to use the permanent sling of the bridge to install the horizontal rail cable at its lower end, and then use the high tension humidity of the horizontal rail cable to weaken the grinding effect of polishing as the beam transportation track of the stiffening beam, so as to realize the assembly of the steel truss stiffening beam of the bridge from the middle of the span to both ends. Compared with the bridge deck crane assembly scheme, the rail cable beam removal scheme can greatly reduce the high-altitude assembly of steel truss beams, which can not only save the construction period and investment, but also help to ensure the construction safety and quality

start of steel truss girder erection of Aizhai super large suspension bridge