Complete the key nodes! CCTV reported the world's first span composite beam bridge of China Construction Eighth Engineering Bureau

6 July, The completion of 0 # block construction

of the

main bridge of Taoer River Bridge in Binzhou Section

of G228 Dandong Line, the world's first span mixed girder bridge

invested and operated by the Eighth Bureau of China Construction, marks that the project has entered a new stage

of cantilever construction for subsequent continuous girder construction. The project has laid a solid foundation

to overcome difficulties

and challenges, and the construction

of Binzhou Section of G228 Dandong Line is 42.5 kilometers

long. It adopts the standard construction

of two-way four-lane first-class highway, which integrates the functions of frontier defense and coastal development. The Taoer River Bridge on the

coastal high-grade highway

is the key and difficult part

of the project, with a total length of 4334 meters. The main span is 338 meters

, which will become the world's first span hybrid beam bridge

after completion. The long-span integral continuous beam bridge is generally constructed

in segments, and each segment is called "block"

. The 0 # block is directly above

the pier from the bridge. The pier extends to both sides. The first block

of the building is the first pouring unit

of the bridge. Block 0 # is the key part

of the whole bridge construction, which is 20 meters long and 12.5 meters wide. Height: 17m

, cantilever length: 4.5m, height

from the ground: about 37m

, concrete volume: about 1400m3

, reinforcement, prestressed pipe, embedded parts, Projects with a large number of reserved holes

, which are densely interlaced

and difficult to

construct mass concrete, optimize the concrete mix proportion through BIM simulation of the construction process

. To solve the construction problem

of 0 # block, the first domestic intelligent hanging machine

is developed by science and technology

. The main span of Taoer River Bridge is 338 meters

long. It is a continuous rigid frame bridge

with mixed girder, including concrete section, steel-concrete section, The maximum cantilever casting section of the bridge in three forms

of steel box girder section is 16.09 meters high. Weighing 369 tons

, it is the highest cantilever section

in the world. Because the project is located at the estuary

of Bohai Sea, the large floating crane can not enter the Taoer River due to the limitation

of navigation width, and

the existing equipment can not meet the UNK4 of the bridge construction. 1 China Construction Eighth Engineering Bureau relies on Taoer River Bridge 0 HTML0 UNK4 2 to independently develop the first domestic 0 HTML0 UNK4 3 to have both cantilever section concrete pouring and steel box girder hoisting 0 HTML0 UNK4 4 large-scale intelligent construction equipment 0 HTML0 UNK4 5 intelligent hanging machine 0 HTML0 UNK4 6 to provide complex long-span bridge construction. The new solution 0 HTML0 UNK4 7 Intelligent hoisting machine consists of two parts: the main operation structure 0 HTML0 UNK4 8 and the intelligent control system 0 HTML0 UNK4 9 Cantilever pouring of the hybrid girder continuous rigid frame bridge 0 HTML0 UNK5 0 The required hanging basket and the required crane for hoisting the steel box girder in the span 0 HTML0 UNK5 1 Carry out integrated design 0 HTML 0 UNK5 2 The whole construction process can realize 4 times of function conversion 0 HTML 0 UNK5 3 Set cast-in-place, cantilever casting, cantilever assembly, 0 HTML 0 UNK5 4 runs through the whole construction process of the bridge. 0 HTML 0 UNK5 5 greatly reduces steel and labor input compared with traditional equipment. 0 HTML 0 UNK5 6 Since the start of construction, the project team 0 HTML 0 UNK5 7 has carried forward the iron army style. Fighting along the Tao'er River 0 HTML 0 UNK5 8 with efficient execution 0 HTML 0 UNK5 9 successfully completed a node goal 0 HTML 0 UNK60 At present, Taoer River Bridge 0 HTML 0 UNK61 Main Bridge Intelligent Hanging Machine has been assembled 0 HTML 0 UNK62 will enter the cantilever construction stage 0 HTML 0 UNK63 after the completion of the bridge. It will effectively connect the two sides of the river 0 HTML 0 UNK64, and the journey between the two sides will be shortened from 90 minutes to 5 minutes 0 HTML 0 UNK65, which will greatly facilitate enterprises along the line. Transportation and travel of residents 0 HTML0UNK66 Optimizing the layout of coastal road network in northern Shandong 0 HTML0UNK67 Promoting the economic development of the Bohai Rim region 0 HTML0UNK68 < IMG src="https://img7.ccement.com/richtext/img/pvh5wf3ahc1688702248058.