On January 5th, 2022, the critical control project of "Seven Tunnels, Eight Bridges and One Hub" of the Hezhou-Bama Expressway (Laibin-Du'an section) in Guangxi Province ---Jinchai Hongshui River Bridge successfully completed the concrete construction in the main chord pipe.

Overall scene of concrete pouring in the pipe of

Jinchai Hongshui River Bridge.

It is reported that there are 16 main chord pipes of the whole bridge of Jinchai Hongshui River Bridge, with a length of 5,217 meters and a total volume of 4,256 cubic meters. The bridge adopts the vacuum-assisted perfusion process of "two-stage relay", which is completed in nine times, and the highest pumping point is nearly 65 meters away from the pumping surface.

Concrete pouring in tube is the key link to form concrete-filled steel tube structure. Concrete-filled steel tubular arch bridge technology, the core and also the embodiment for the Guangxi Road & Bridge Engineering Group, makes stringent requirements for the trial match and adjustment of concrete-filled steel tubular mixture ratio, striving for perfection without any error.

The concrete quality inspection team of Jinchai Hongshui River Bridge carries out concrete performance inspection.

In order to ensure the cohesion of the concrete pouring in the pipe, the concrete pouring in the 13th and 14th chord pipes was scheduled on January 1st, 2022.

Working on the concrete pouring hole in the pipe of

Jinchai Hongshui River Bridge.

Photo by Guangxi Highway Inspection Co., Ltd.

According to reports that as a professional inspection and testing team in Guangxi, Guangxi Highway Inspection Co., Ltd. is responsible for the quality control of several national key projects. It has experienced the inspection of the Third Pingnan Bridge, the "world's first arch bridge”, Matan Hongshui River Bridge, the largest concrete-filled steel tube arch bridge with the widest bridge deck and the largest steel consumption in the former expressway, Shawei Zuojiang Bridge, the largest span concrete-filled steel tube basket arch bridge in the world under construction in Guangxi, Liulv Bridge, Tian'e Longtan Bridge, the “world's first span”,and Longmen Bridge, the longest cross-sea bridge in Guangxi, etc. The company leads the industry in its own self-compacting concrete technology, constantly defending the highest honor of "Arch Bridge Kingdom" of Guangxi Road & Bridge Engineering Group.