Concrete Box Culvert

Meisi Lake International Culture Art Centre located in ChangSha China, designed by the world-famous architectural designer, it has been one of the significant city cards in South of China.

What is the underground Vessel under these fabulous architectures? Dingli is honoured to be the exclusive manufacturer of the precast box culvert mold for this project, and we are allowed to take a close look of this 23.4 square km tunnel, let see how it looks like.

This is the design of the three-cell precast culvert

This whole project is about 15.2 kilometres in length and the total investment up to 3 billion US dollars.

Installed box culverts have been connected like wind river

Let's take an inside view of this concrete creature.

There is enough space for people to walk through like a tour in a cave

The box culvert line is laid greenbelt of the urban, all the power cable, water supply, reclaimed water, gas pipeline will go inside it. The dimension of box culvert is 10.4M in width and 3.7M in height, three cells are well organized, two sides cells are for power and gas separately, the mid cell is utility for Medium-Voltage Power Cables, water supply, reclaimed water.

Here is the control centre of the whole culvert line.

We can monitor all the details and conditions inside the box culvert line, we can also run a car from the control centre to the branches of the box culvert line for any emergency.

All the concrete box culvert for this project is precasted in the manufacturing factory instead of casting in site, this saves a lot of time for we don't have to wait for the next job before the concrete become solid when casting in site.

You may find the QR code on the up right corner of each box, that's the unique ID for these items. We can learn information like when it produced, dimensions and other details for the record and retrace.

Want to learn more about box culverts? leave your comments and let us know.

The connection between box culvert is one of the most important elements to the quality of underground pipeline.

There are two common connections are widely used in projects. One is connecting with the longitudinal steel bar, the other one is connecting with male & female joint (without steel bar).

1.Connecting with longitudinal steel bar.

Build a hole for the steel bar when precast the box culvert, and connect each box culvert withthe steel bar and tension the bar, then box culverts are connected into one whole pipeline. This process used to compress the rubber gasket, seal the gap and resist the differential settlement of the ground.

the longitudinal connection could be two box culvert, and also could be used in multiple box culverts to improve efficiency.

Anchoring fasten method in longitudinal connection as drawing below. there is the hole in the anchoring sheet. after the tensioning of steel bar is done, and anchoring work has been finished, fill concrete grout into that hole to prevent the steel bar from going rust.