The Rongkun High -speed Railway Channel has made new progress in China.

The reporter learned from the Beijing -Kunming High -speed Railway Xikun Co., Ltd. that on July 28, the controlling project of the Chu and Kuchu high -speed railway Sichuan -Chongqing section, the main tower of the Qianjiang Special Bridge of Luzhou, was capped smoothly, marking the construction stage of the bridge entered the cable cable construction stage. The Kungao Railway Sichuan -Chongqing section created favorable conditions at an early date.

Luzhou Minjiang Special Bridge is located at the junction of Longma Tan and Jiangyang District, Luzhou City, Sichuan Province, with a total length of 2613.315 meters. The main bridge tower is 113.2 meters high. It is the first double -pillar V -shaped bridge tower in China. The high -speed railway bridge, the design speed is 350 kilometers per hour. The main span uses (124+240+124) M Sorgulgi rigid structure to cross the Minjiang River. It is the largest span prestressed concrete continuous beam bridge across the Chongqing high -speed rail. According to Wu Xinli, the person in charge of the professional head of the Chongqing High -speed Railway Bridge of China Railway, the bridge adopts the structure system of the tower pier beam fully solid, which improves the structural stiffness, reduces the cross -medium deflection and the corner of the beam, and improves driving comfort and safety. Avoid the risk of high -pier large tonnage support.

Ge Yanqing, the project manager of the Sichuan -Chongqing section of the Chongqing High -Railway Sichuan and Chongqing section of China Railway, introduced that from the beginning of 2021, the geological conditions of the main tower construction area were more complicated, the rock formation was difficult, the venue was narrow, the construction was very difficult, and the construction period was tight. The main tower span the rare fish protection area of ​​the Minjiang River. It is located at the river beaches on both sides of the strait. Not only is the landscape requirements, but it is also necessary to grab the drilling piles and Chengtai construction before the flood season. In order to ensure that the bridge is promoted according to the goal of node, the project department will break through the construction method of "foundation pit" through optimization plans, advance planning, increased resource allocation, accelerate process connection, and strengthen assessment efforts. Digging "front" and "dry digging twice" technology. Before the flood season, the main pier is successfully completed, and the early construction period is 3 months than the normal construction. Since then, the project department has always adhered to the principles of “technical research planning early planning, full tilt of resource allocation, advancement of construction organizations, and orderly controlling safety quality” to ensure that the tasks of various progress nodes are steadily advanced. After the Spring Festival this year, it has completed important nodes such as block 0 pouring, continuous beams across the river, and Saddle positioning and installation, which has laid a solid foundation for the smooth cap of the main tower.

According to Wang Junlou, the engineering department of Xikun Corporation of Jingkun high -speed railways, the main tower of the Minjiang Bridge is divided into 22 sections. The amount of concrete in a single tower column is high due to the tower column, which has high requirements for construction accuracy. Control, durability of bridge tower concrete, pumping construction of concrete, and custody of custody is a key issue for the construction of the bridge tower. To this end, the project department implements the full process of construction and implementation of the main tower, strictly controls the tilt of the tower column, optimizes the design of the tower column template design, and ensures that the construction template has sufficient strength and stiffness. Effective measures such as temporary trolic rods should be set up during the construction process. Ensure the stability construction of the tower column, and adopt a reasonable concrete cooperation ratio, cooling, maintenance measures, and pouring process to ensure the quality of the tower column concrete construction.

The Chongqing high -speed rail is an important part of the Beijing -Kunming Channel of the State Eights, Eight Heng Railway Network. At the same time, it will also become the Rongkun high -speed railway channel from Chengdu to Kunming. After the opening of the Chongqing high -speed rail, it will further improve the national comprehensive three -dimensional transportation network and strengthen it into it. The connection between the Shuangcheng Economic Circle and Central Yunnan region in the Chongqing area have greatly reduced the railway travel time from Chengdu and Chongqing to Kunming, greatly improving the travel conditions of the people along the route, and promoting the high -quality economic and social development along the route.

Chengdu Daily Jinguan News Wang Jingfeng reporter Tian Yaochen Pictures The local railway department provides responsible editor He Qixie Editor Liu Yonghao

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