[New Year Chronicle] "Bridgekeeper" of Pingtan Strait Highway Bridge
[Explanation] The 16.34-kilometer-long Pingtan Strait Highway-Rail Bridge is a key control project of the Fuping Railway. The Pingtan Strait where the bridge is located is the world’s three major wind vents, which are as famous as Bermuda and the Cape of Good Hope. It has strong wind, deep water and waves It is high, and the wave force at the bottom of the bridge is more than 10 times that of inland rivers such as the Yangtze River. The impact force on the bridge increases exponentially, which brings great challenges to the "bridge guards" on the bridge.
A few days ago, along with the "bridgekeepers", the reporter used the camera to record their daily maintenance work.
[On-site synchronization]
Everyone pay attention to safety, and properly use this seat belt, helmet, and labor protection products.
[Explanation] Zheng Hua is the foreman of the Pingtan Road and Bridge Work Area of Changle East Road and Bridge Workshop of China Railway Nanchang Group Corporation.
Before the opening of Fuping Railway in 2018, he came to Fuping Railway to participate in the pre-intervention work.
After two years of meticulous care, he knew the foundation of the bridge.
This year is the first Spring Festival travel for the Fuping Railway and Pingtan Strait Highway Bridge. Zheng Hua and his workers are also extremely busy.
[On-site synchronization]
The wind speed is 1.7 to 2.1 meters per second, which meets the conditions for going upstairs and can work.
[Explanation] Zheng Hua told reporters that this "super project" that passes through the world-class tuyere cannot tolerate any sloppy maintenance. A little problem on the bridge may be amplified during high-speed train operation, causing unpredictable consequences.
So every day, he and his workers have to carry out detailed inspections of the bridge.
[On-site synchronization]
The bubble is also centered, indicating that the level of the support is fine.
[Explanation] Since there is no bridge point in the middle of the bridge, the "medical doctor" led by Zheng Hua relies on his feet. Every day he bends down and walks 6 to 12 kilometers in the dark box girder. The bolts on the support of more than 5000 hammers can distinguish whether the wall is strong, whether the wall inside the beam is damaged, whether the gap between the box beam connection is too large, and is ventilated by the faint headlight and the banging sound of the bridge. Whether the drain hole is blocked.
[Concurrent] Zheng Hua, Foreman of Pingtan Road and Bridge Engineering Zone, Changle East Road and Bridge Workshop, Nantie Fuzhou Public Works Section
At present, the maintenance of our bridge is carried out by a combination of civil air defense and technical defense. Our bridge has a bridge health monitoring system that monitors the bridge structure 24 hours a day. There are seven employees in the Pingtan Bridge work area on a daily basis, responsible for daily maintenance, ensuring trains Safe operation.
[Explanation] The inspection of bridge piers requires a lot of patience. Under the vibration of fast moving vehicles and the erosion of sea breeze, every screw has the risk of falling off. Zheng Hua and the workers need to carefully check every screw by knocking.
[Explanation] Since the bridge is a road-rail bridge, the time of the railway skylight is limited, and the routine manual inspection is very difficult.
Not long ago, the health monitoring system of the Pingtan Strait Highway and Railway Bridge was officially put into use. By setting up various types of sensors, it can timely detect more than a dozen impacts such as earthquake and ship collision, environmental wind load, linear monitoring of main beam deflection, and support displacement monitoring. As a factor of bridge safety, the Pingtan Strait Highway and Railway Bridge was given a safety warning and condition assessment.
[Concurrent] Lin Gengsheng, Deputy Director of Changle East Road and Bridge Workshop, Fuzhou Construction Section of Southern Railway
This is the earthquake ship collision sensor. In the event of an earthquake or ship collision, relevant information will be transmitted to our command center platform through the impact on our bridge structure. Similar to this sensor, our bridge has 659, and they are 24 hours Work to ensure the safe operation of our Fuping Railway.
[Explanation] Lin Gengsheng introduced that the health monitoring system can collect and analyze the relevant data of the bridge in time, so as to have a more scientific assessment of the health of the bridge.
On the basis of regular inspections and manual inspections, the whole process of the bridge's health has been managed.
[Concurrent] Lin Gengsheng, Deputy Director of Changle East Road and Bridge Workshop, Fuzhou Construction Section of Southern Railway
This is our bridge health monitoring center. It is like our private doctors who monitor the health of our bridge for 24 hours. The sensors on the bridge will transmit data here as soon as possible. If something abnormal happens, we Emergency measures will be taken as soon as possible.
[Explanation] As night fell, the lights on the Pingtan Strait Highway and Railway Bridge were dazzling, and Zheng Hua and the workers also completed the day's work.
For them, guarding the bridge and ensuring the safe operation of trains is the most meaningful thing.
[Concurrent] Zou Jinheng, Bridge Worker, Pingtan Maintenance Work Area, Changle East Road Bridge Workshop, Fuzhou Construction Section of Southern Railway
This is the first Chinese New Year since I joined the work, and it is also the first Chinese New Year since the opening of the Pingtan Strait Highway Bridge. It is very meaningful to be able to protect the safety of the bridge here.
Wu Shengwei and Wang Fubin report from Fuzhou, Fujian
Editor in charge: 【Luo Pan】