There are new progress in the construction of the three river crossing channels in Jiangsu →

Atlas News On September 14th, Xinhua Daily and Jiao Dian reporters learned from the Jiangsu Provincial Department of Transportation that the construction of the three river crossing channels of Longtan Yangtze River Bridge, Jiangyin Jingjiang Yangtze River Tunnel, and Zhangjing -yin Yangtze River Bridge ushered in new progress.

The construction of the north of the Longtan Yangtze River Bridge is completed

A few days ago, with the last side of the concrete pouring in place, the construction of the north anchor of the Longtan Yangtze River Bridge was completed, laying the foundation for the subsequent upper structure installation.

The north anchor of the Longtan Yangtze River Bridge is U -shaped in the plane. The tail is 54 meters wide and the front end is separated. The horizontal width of each side is 14.6 meters. The anchor body is divided into anchor blocks, scattered saddle, front anchor chamber, vertical and horizontal rear pouring section, pressure block and anchor decorative block according to the structural force and function. Among them, the saddle is a hollow thin -walled structure with a wall thickness of 3 meters and a ventilated hole is set on the side wall. In the two areas of upstream and downstream of the saddle, the concrete is staggered. Each concrete pouring is poured with a 28 -meter fabric+car pump. This time it was poured on the 14th floor of the upper side of the saddle, and a total of 249 cubic meters were poured.

Since the construction of the saddle, the project construction team has overcome problems such as high temperature and heat, epidemic prevention and control, and difficulties in raw material organizations. The construction operation plan is controlled by the concrete pouring construction process and safety management layer to ensure the effective connection of the construction tasks of various working sites such as the installation of the north anchor anchor system, anchor block, and loose saddle. After more than 9 months of struggle, the construction tasks of the saddle were completed safely and efficiently.

Jiangyin Jingjiang Yangtze River Tunnel Tunnel excavation exceeds 2000 meters

The reporter learned that the right -line shield of the Jingjiang Yangtze River Tunnel of Jiangyin passed through the lowest point, with a cumulative inlet of more than 2000 meters.

The lowest point of the Yangtze River Tunnel of Jiangyin is 82 meters underwater, and the maximum pressure at the bottom of the shield machine reaches 9.8 bacher, which is equivalent to about 10 kg of human nail caps. In order to ensure the safety and stability of the tunnel, the project team carefully organized and scientifically arranged, continuously improved the construction plan, conducted standardized management of the scene, and organized an analysis meeting for multiple times, summarized and analyzed the excavation parameters, innovated the application of dual -solution synchronous grouting technology. Precisely control the synchronous grouting to comprehensively improve the quality of the molding tunnel. Since the excavation of the shield machine, the Jiangyin Jingjiang Yangtze River Tunnel Construction Headquarters has efficiently coordinated the epidemic prevention and control and production safety work, strictly implements the requirements for the prevention and control of the territorial epidemic situation, and builds a construction site epidemic defense line. The project team adopts automated testing technology, systematically checks and analyzes knife trays, tool wear, dynamically adjusts the excavation parameters of the shield machine, and uses the smart management command center for comprehensive control to ensure the safe and efficient excavation of the shield machine.

Signing contract for the manufacturing and coating project of the Yangtze River Bridge Steel Tower

Recently, the Provincial Transportation Engineering Construction Bureau held a contract signing ceremony of the Zhangjing-Huan Yangtze River Bridge Steel Tower to manufacture ZJG-C1-ZJG-C3, and the ZJG-C4 project contract. At the ceremony, the Zhangjing -Huan Yangtze River Bridge Construction Headquarters signed a construction contract agreement with the steel tower manufacturing and coating units; the main person in charge of the steel tower manufacturing and coating unit increased the investment in technical forces and equipment Speaking of the mission.

The Zhang Jingyu Yangtze River Bridge is currently under construction in the world's largest span bridge. It will achieve six "world's first innovation" and refresh six "the world's best." Among them, the main tower of the South Channel Bridge is 350 meters high, which is the world's highest suspension of cable bridge. The northern channel bridge is 217 meters high. The amount of nearly 100,000 tons is a key control project for the construction of the bridge.

The Provincial Communications and Construction Bureau requires that participating units in accordance with the requirements of "construction intelligence, construction assembly, product digitalization, and management informatization", to make real moves and solve problems in quality control to ensure the size and accuracy of steel structure components, welded the explorer and qualified once, Rate and coating quality helps the project to compete for the ministry -level Ping An Centennial Quality Demonstration Project and the internationally leading super project in the bridge field; in terms of technical research on tree benchmarks, climbing the peak, comprehensively implement intelligent manufacturing, intelligent painting, application of shape, professionalism, professionalism, professionalism, professionalism, professionalism, professionalism, professionalism Chemical processing equipment to realize the digital dish of the steel structure, automatic welding and finished installation, intelligent painting, and automated detection of robots, improve the level of intelligent manufacturing of steel structure, and simultaneously carry out the improvement of intelligent manufacturing rates for steel tower, segmentation pre -pre -spelling When scientific research is related, we will focus on solving the technical difficulties in the processing process of steel structure; pressing responsibilities, risk prevention of risks, red line consciousness and bottom line thinking on safety management, effectively prevent the hidden dangers of risks, strictly implement the normalized epidemic prevention and control measures, and resolutely build The epidemic "protective wall".

Xinhua Daily · Jiaojiao Reporter Mei Jianfei Tian Mochi

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