China News Service, Guangzhou, February 7 (Cai Minjie and Wang Pan) Guangdong Communications Group announced on the 7th that at 22:00 on the 6th, after 12 hours of continuous pouring, the bottom seal construction of the east anchorage foundation pit of the main bridge of the Shiziyang Channel Project was completed.
The Lion Ocean Crossing is another super project in the Guangdong-Hong Kong-Macao Greater Bay Area after the Hong Kong-Zhuhai-Macao Bridge and the Shenzhen-Zhongshan Crossing. It is technically difficult and has complex construction techniques. As a project control project, Shiziyang Bridge adopts a main span of 2180 meters and a double-layer steel truss suspension bridge to "cross the river in one span". After completion, it will create a double-layer suspension bridge with "main span span, main tower height, anchorage foundation, It ranks first in the world in terms of main cable scale and number of lanes.
The bottom cover construction of the east anchorage foundation pit of the main bridge of the Shiziyang Channel Project was successfully completed. Photo courtesy of Guangdong Communications Group
The Shiziyang Bridge has two main towers and two anchors on the east and west banks of the Pearl River. Among them, the foundation of the east anchorage is a circular ground wall with an outer diameter of 127 meters and a wall thickness of 1.5 meters. It adopts a ring-shaped reinforced concrete lining support structure and was constructed by Poly Changda. The excavation volume of the foundation pit is as high as 480,000 cubic meters, which is equivalent to 11,228 standard swimming pools. The foundation depth reaches 33.5 meters. There are excavation of the foundation pit, lining cross-cutting operations, multiple vertical lifting equipment and transfer vehicles crossing at a three-dimensional level. Safety The risk is greater.
"Facing the huge amount of work, we invested 80 pieces of equipment to carry out construction, dynamically optimizing the construction organization and resource allocation to ensure the efficiency and safety of the project; using construction techniques such as island method excavation and lining reverse construction method, 160 days The earthwork excavation of the East Anchor Dock was completed, and the back sealing work was completed efficiently." said Kuang Yicheng, technical director of the project department of the T9 contract section of the Changchun Shiziyang Channel in Poly.
The bottom cover construction of the east anchorage foundation pit of the main bridge of the Shiziyang Channel Project was successfully completed. Photo courtesy of Guangdong Communications Group
Previously, the foundation pit excavation and lining construction of the west anchorage of Shiziyang Bridge were completed on February 2 this year, and the bottom sealing construction is planned to begin during the Spring Festival.
At present, the project construction is in full swing. The main tower of Shiziyang Bridge has entered the capping construction stage. The first section of the steel shell tower of the main bridge has successfully passed the acceptance inspection. The approach bridge is progressing in an orderly manner with soft foundation treatment and bridge substructure construction.
Zhang Taike, chief engineer of Guangdong Bay Area Transportation Construction Investment Co., Ltd., said that this year the Lion Ocean Channel will usher in major milestones such as anchor core filling and the main tower height construction exceeding 100 meters. (over)