Across the river! Sany helped build the Zhenglong Hongshui River Bridge!

The red water river is flying rainbows, and the green mountains are more than the sky.On the evening of March 14, the concrete in the main chord pipe of the last arch rib of the Zhenglong Hongshui River Bridge was poured. So far, the main chord of the arch rib of the whole bridge has completed the pouring construction.

Zhenglong Hongshuihe Bridge is the largest span medium-bearing concrete-filled steel tubular arch bridge under construction by Guangxi Road Construction Group, and it is also the key control project of the 2-1 Division of Wuxin Expressway in the "Guangxi Expressway Network Planning (2018-2030)". Located in Laibin City, Guangxi Zhuang Autonomous Region, the bridge is 1,404 meters long, and the main bridge is 316 meters long, spanning the Hongshui River, the mother river that nourishes the lush soil of northern Guangxi.

The arch of the whole bridge is poured with a large volume of concrete, the arch rib is a steel pipe concrete ten-truss structure, and the arch rib main chord pipe has a total of 8, which is divided into 4 pumps, and a total of 2454m³ of C60 self-compacting concrete needs to be poured.

Because the northern Guangxi region is mostly karst landform, it is located in complex topography, many karst caves, many defective fissures, and geological development concealment, the concrete pouring process technology requirements are extremely high, and the equipment selected is also a great challenge.

In order to ensure that the project is carried out as scheduled, Sany Pumping has sent 6 sets of 10023 truck-mounted pumps to become the main force of the pumping task, basically maintaining a 24-hour uninterrupted working state, adopting a two-stage relay pumping process, following the principle of first inside, then outside, first down and then on the top for perfusion.

In order to ensure the quality of the concrete slurry and the stability of the pumping pressure, the project department has enabled the full-time remote real-time monitoring system of concrete pumping quality, which monitors and accurately controls the whole process and collects the pressure value of the concrete slurry on the pipe wall in real time. This technology is the first comprehensive application in concrete pouring construction in the same industry, and it is also a major breakthrough in the intelligent informatization of the concrete-filled steel tube construction process.

According to the theoretical parameters and past experience,Sany on-board pumpIt is completely possible to successfully complete this "task", but the on-site process operators still dare not slack off, keep an eye on the actual situation of concrete pouring, cooperate with the equipment tacitly, and continue to "continue to output stably", and once again break through themselves to complete high-standard, high-quality and high-efficiency concrete pouring.

At the same time, the Guangxi Sanxin service team also quickly responded to the needs of the project department, regularly inspected and maintained, and continued to escort the Hongshui River Bridge.

The person in charge of the project department said: "We have cooperated with Sany many times and jointly completed many landmark key projects in Guangxi, and the on-board pump that was ordered to go out this time also lived up to expectations, and there was no pipe blockage in the pouring process, which greatly shortened the construction period and ensured the progress of the project!" Praise for Sany equipment, and thank Sany technicians and service personnel, which provide the greatest guarantee for high-quality and efficient construction! ”

It is reported that after the completion of the bridge, it will greatly shorten the spatial distance between the towns on both sides of the Hongshui River, and will play a positive role in facilitating people's travel, promoting the development of tourism resources along the line, boosting rural revitalization and optimizing the Xingbin Expressway network.