Cover news reporter Li Qing Wang Yuexin
On January 8, the cover news reporter learned from the operation management branch of Sichuan Chengle Expressway Co., Ltd. that the 16 upper span bridges on the Meishan to Leshan section of the Chengle Expressway had been demolished, and the road from Chengdu to Leshan resumed traffic at 5:30 p.m. Previously, on January 4, the direction from Leshan to Chengdu was closed for half due to capacity expansion.
It is understood that at 7 o'clock on January 7, the Meishan to Leshan section of the Chengle High-speed Expansion Construction Project (k53+400 to k122+300) was completely closed, and the 16 upper span bridges began to be demolished simultaneously.
According to reports, the reason for the demolition is that the section is widened along the two sides of the original road, the original overpass clearance is insufficient, can not meet the needs of high-speed reconstruction and expansion, Chengle Company, a subsidiary of the Chengdu-Chongqing Company of the Jiaotong Investment Group, and the local government, the design unit docking consultation, optimization of the design, decided to the original overpass demolition and reconstruction or new construction, to ensure the smooth progress of follow-up project construction, while ensuring the safe travel of residents along the line.
Most of the overpasses demolished in this construction are vanity overpasses, and compared with the previous demolition work, there are difficulties such as a large amount of single-bridge masonry, a complex bridge structure, a large net height of the bridge, and poor beam stability. The construction party sorted out and formulated the demolition construction plan one by one, and arranged the machine tools and personnel, a total of about 250 cranes, crushing heads and other machinery, and about 600 construction personnel such as machine operators and welders, to ensure the smooth progress of demolition and follow-up road traffic safety restoration work, and the Chengle Expressway resumed half of the traffic as scheduled.
It is reported that after the completion of the demolition and construction of the overpass, it will further open up the longitudinal construction road, open the prelude to the construction of the main line base, provide favorable conditions for grabbing the golden period of earth and stone operations, and also lay a solid foundation for the project to complete the target task of opening to traffic in 2021.
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