Construction of Luzhou Yangtze River Bridge

Luzhou Yangtze River Bridge No.1 was the first highway bridge directly built by Sichuan Provincial Department of Transportation on the Yangtze River, and it was also the longest highway bridge built by China at that time. It has the characteristics of deep foundation construction, fast flowing water, thick coverage, diverse upper and lower structures, complex technology and high requirements. The scale of the project is huge, and it is a very arduous project, facing a series of severe tests such as lack of deep-water operation technology and experience, poor equipment and lack of materials. Although faced with great risks and pressures, the brave, intelligent and indomitable sons and daughters of Luzhou just know that there are tigers in the mountains, and they tend to go up the mountain and face difficulties. The headquarters also put forward the principle of building people's bridges, that is, all parties support and Qi Xin work together to overcome all difficulties.

Thousands of voluntary workers have been organized to take part in voluntary labor at the construction site every day, carrying sand and gravel, lifting cement to dig holes and sweating for the bridge. At that time, Luzhou Shipyard, Southwest Construction Engineering Company, Luzhou Diesel Engine Factory and Yangtze River Excavator Factory rushed to support the steel cofferdam with a diameter of 20m for open caisson, the steel slipform for main pier construction, the universal bar for installation and positioning, the foundation of high pile cap for deep-water pier and the extra-large drill with a diameter of 2m for punching into columns, which were urgently needed for underwater construction. Due to the lack of transportation tools in bridge construction, the 29 th and 33 rd teams of the provincial transportation company handed over their big trucks to the headquarters for free use. At that time, the power was tight, and Luzhou Power Supply Bureau insisted on full-load power supply to meet the power demand of bridge construction, which made the bridge construction show a vigorous scene of support from all directions. Luzhou Second Yangtze River Bridge belongs to a super-large bridge across the Yangtze River from Longchang to Naxi section of Xiamen-Chengdu Expressway. Total length of bridge1408m, width 25m. The superstructure of the main bridge is a prestressed concrete continuous rigid frame. The bridge was completed and opened to traffic in June 2000.

Social news: the limit of danger

2012 1 65438+1October 21Weibo, the official state of Luzhou, announced that there was a major safety hazard at pier No.2 on the north bank of the Yangtze River Bridge, and all trucks and buses were forbidden to pass, so small vehicles were requested to bypass as much as possible.

Later, I learned from the Municipal Transportation Bureau that the cracks appeared here because the Yangtze River Bridge was overloaded for a long time and the traffic volume increased too fast. Cracks appeared in the pier body of No.2 approach bridge on the north bank of Luzhou Yangtze River Bridge, which has been in operation for 13 years, and there are major safety hazards. To this end, the transportation department quickly took emergency measures. First, arrange the traffic road administration and public security traffic police to jointly implement temporary traffic control on the Yangtze River Bridge from1October 20th1kloc-0/8th, and prohibit freight vehicles and large vehicles (except buses) from passing, so as to reduce the bridge load; The second is to arrange engineers and technicians to monitor on the spot 24 hours a day and report the monitoring situation every half hour; 3. Immediately contact the bridge experts from the Provincial Transportation Planning and Design Institute, and come to Luzhou for bridge disease consultation at 23: 00 on October 20th 165438, put forward guiding treatment opinions, study treatment plans, and eliminate potential safety hazards as soon as possible; The fourth is to quickly request the support of the Provincial Department of Transportation and the Provincial War Office, take temporary emergency measures, and erect a steel bridge for combat readiness to ensure basic transportation. Huangpu Town Yangtze River Bridge, Jiangyang District, Luzhou City