The Red River winds its way.，The green hills on both sides of the river are towering，The sea of clouds is churning，The dragon is looming in the mist.。Recently，The qualified concrete is discharged along with the fourth-stage grout outlet pipe of the last two upstream and downstream outer upper chord pipes，The longest span arch bridge in the world——Completion of In-pipe Concrete Pouring for Tian'e Longtan Bridge in Guangxi。

Tian'e Longtan Bridge is located 6 kilometers upstream of Longtan Dam in Tian'e County, Hechi City, Guangxi.，Across the Red River，Total length 2488.55 meters，The span is 600 meters。Wherein the main bridge is 624 longm，The scheme of deck concrete arch bridge with stiff skeleton is adopted.，8 main chord pipes in total，Pipe diameter 90cm，Requires a one-time infusion of 400 in a single canalm³Left and right concrete。

Due to the large span of Tian'e Longtan Bridge,，The construction is extremely difficult.，It is located in steep slope and deep gully.，In the crisscross valleys，The geological conditions are complex，The construction working face is narrow，The construction period is tight，Therefore, the requirements for the stability and adaptability of pumping equipment are extremely high.。

  

Four 28 MPa ultra-high pressure trailer pumps and more than ten mixer trucks have become the main force of the pumping mission.，Use vacuum assist“Level four relay”Perfusion process，In-line infusion by vacuum-assisted four-stage continuous pumping，The compactness of the concrete pouring in the pipe is greatly improved，Lower the plugged pipe、Risks such as bubble aggregation。

The arch on one side of the bridge is divided into 8 sections.，Uninterrupted pouring is required on both banks for each construction，There can be no deviation.，No more breakdowns.，It was perfused for 4 times.C80 high strength concrete。

The pumping mission took a total of 47 hours to complete.，A total of 2960 were filledm³Concrete。

  

In addition to the work of the host device，At the same time, Sany is equipped with the gold medal pump pipe produced by Sany Zhongyang.，Cooperate with the trailer pump for uninterrupted operation，The integrity of the equipment function is more effectively ensured.，It gives full play to the maximum advantages and best performance of SANY equipment.。

  

In addition，At the first time of receiving the pumping task,，Sany Guangxi Agent Responds Immediately，Dispatched Hechi、Two senior service directors and one resident service engineer from Nanning area came to the project department for on-site support.，Jointly participate in the discussion of the grouting scheme in the early stage of the project, the exchange of key and difficult points in the construction process, and the commissioning and maintenance of equipment with Guangxi Road and Bridge Group.，It effectively ensures the efficient and stable continuous work of SANY equipment.，Escort the concrete delivery of the whole project。

  

After the completion of Tian'e Longtan Bridge in Guangxi，Will refresh the creation of Pingnan Sanqiao“The world's first arch”Record，Become the world's largest span arch bridge。