Chenyongqing, mechanical engineer of Hong Kong Zhuhai Macao Bridge: 3100 ton "dolphin" tower overturning vertical rotation double ship hoisting creates the first case in the world
recently, the group of builders of Hong Kong Zhuhai Macao Bridge won the title of "south Guangdong model", and chenyongqing, mechanical engineer of test pile engineering of Hong Kong Zhuhai Macao Bridge, was rated as one of the outstanding representatives. Compared with the predecessors such as Lin Ming and Su quanke, who won the same reputation, Chen Yongqing, 35, is relatively young. In the view of Yang Lei, director of the survey and monitoring room of the cb04 bid section of the original main bridge project, who has worked with Chen Yongqing for many years, Chen Yongqing deserves it
bid section cb04 where Chen Yongqing is located is mainly responsible for the erection of about 7 km steel box girders in the main bridge and the hoisting of three giant "dolphin" bridge towers in the river sea direct ship channel bridge. Over the years, Chen Yongqing and his team have overcome a series of problems in offshore operations, successfully installed 55 prefabricated piers and abutments with flexible water stop method, and completed the hoisting of large steel towers with a total weight of 3100 tons with double floating cranes for the first time at home and abroad, making a number of industry firsts
"dolphin" tower broke the world record
back in 2013, at that time, there was no such a huge steel tower at home and abroad that achieved integral hoisting at the same time. Each dolphin bridge tower has a net weight of 2600 tons, a total weight of 3100 tons, and a height of 105 meters. How to hoist three "Big Macs" under complex offshore operation conditions? The people in the project team have no idea
"super engineering can't tolerate any mistakes, not afraid of difficulties, but we must be sure." After more than two years of program preparation and more than 20 expert meetings, Chen Yongqing's team finally decided to adopt the method of double ship hoisting
at more than 4 a.m. on August 23, 2015, the first "dolphin" tower began to be hoisted. Despite the full preparation of the plan and five offshore simulation exercises, Chen Yongqing was still uneasy when he really entered the physical lifting link, "for fear of other conditions in the process". 11 hours later, the "Zhengli price 1 rises and then rises by 2200" commanded by Chen Yongqing closely cooperated with another 3200 ton crane ship "long Haisheng", and the "dolphin" was firmly fixed on the base. At this time, the boulder in his heart finally landed
a bigger challenge is coming - due to the limitation of space and location, the last "dolphin" bridge tower must complete the air turn over before hoisting, with the "belly" down, and the hoisting difficulty will jump several times. Chen Yongqing once again felt unprecedented pressure
from the day before the hoisting, Chen Yongqing did not close his eyes. He checked all links again and again to carefully determine the division of labor. In the early morning of June 2, 2016, the hoisting began, turning 180 degrees, turning vertically in the air, moving horizontally in place, and bolting. At about 10 a.m. that day, the last "dolphin" steel tower jumped in the air
nowadays, the vertical turning and turning of double floating cranes has become the "unique skill" of Chen Yongqing's team. "It is the first time in the world to use double floating cranes to complete the hoisting of large steel towers with a total weight of 3100 tons." "We have applied for a technology patent," said Chen Yongqing
"without him, the project could not be so fast"
in Chen Yongqing's memory, the half year from the end of 2015 to the beginning of 2016 was the most difficult, which was the sprint stage of the bridge project
in addition to the "dolphin" tower hoisting, Chen Yongqing's team also undertakes the task of steel box girder erection. At that time, affected by the poor offshore construction conditions, the hoisting of steel box girders of non navigable span bridges seriously lagged behind. In order to ensure the closure of the main works of the bridge before the typhoon period in July, the remaining 19 steel box girders of the non navigable span bridge must be hoisted before the end of March 2016. In less than 3 months, 19 steel box girders will be hoisted, and a spring festival will be held in the middleDeng Qingming, the technical director of the steel box girder hoisting work area in the cb04 bid section, recalled that during that time, Chen Yongqing, with five other members of the steel box girder hoisting management team, lived on the offshore construction platform, hoisted during the day and adjusted the girder at night. I don't know how many nights he stayed up. "Sometimes he was so sleepy that he fell asleep by leaning on a steel plate."
in winter and spring, it often rains heavily in Zhuhai, or the fog is so heavy that people can't see the stern from the bow of the ship. The steel box girder operation plan was frequently interrupted, and Chen Yongqing could only take the workers through the cracks and spend several times of his energy in the stable window period to get back the progress
before the Spring Festival in 2016, Chen Qie's error was too large, and Yongqing and several team members stayed to continue to rush. "I'll work as long as my brothers can." Chen Yongqing said. On the 28th day of the twelfth month of the lunar calendar in 2015, Chen Yongqing and a colleague of the survey team stayed on board and hoisted the last beam of the year before. When the photos were sent to the working group, everyone was surprised and moved. "Without him, the project could not have been carried out so quickly." Yang Lei said
now, the Hong Kong Zhuhai Macao Bridge has been fully opened to traffic. For this experience, Chen Yongqing felt very deeply, "I am very lucky to be able to accompany the growth of the Hong Kong Zhuhai Macao Bridge throughout the journey"
Southern all media Liu Yanting, Liang Han
overall planning: Li Qiang
(: Li Jiajia hn153)