Home \ International \ Bauer India constructs the deepest diaphragm wall element
Bauer India constructs the deepest diaphragm wall element
04/11/2023
Pubblicato da Ettore Zanatta
Bauer India constructs the deepest diaphragm wall element during a subway project in Patna.
There are roughly 1.43 billion people living in India, and this number is rising. This makes India the most populous country on earth. To accommodate the continually growing population and the increased traffic load associated with this growth, especially in major urban areas, greater focus is being paid to infrastructure expansion. This is also true in Patna, the capital of the state of Bihar in northeastern India.
The goal of the Patna Metro subway project is to provide the inhabitants of this metropolis with a reliable, efficient and sustainable public transportation system that shortens travel times, improves the traffic situation and reduces road congestion. In short: a project that will contribute to the general development and modernization of the public transportation network in Patna. Apart from subway lines and stations, the construction project also includes elevated railway routes along with train depots and the associated infrastructure.
Bauer Engineering India Private Limited was awarded the contract for diaphragm wall work at a total of four stations as well as for a retrieval shaft. “We are excited to contribute to this groundbreaking project,” says Yogeshwaran Purushothaman, Project Manager at Bauer India. “Our diaphragm wall elements act as solid and permanent foundations on which the new subway stations will be constructed.” The work started in November 2022 and is expected to be completed by March 2024. Over this period, a total of 636 diaphragm wall/barrette elements will be constructed for all four subway stations. As impermeable / structural retaining structure, they provide stability and structural support. Among other equipment, a Bauer GB 34 hydraulic grab, a Bauer GB 50 and a DHG grab on a Bauer MC 96 duty-cylce crane are being used.
In June, Bauer India was able to set an extraordinary record during this project: The deepest barrette foundation element ever constructed at Patna Metro which was installed at a depth of 75 m using a hydraulic grab. “This is a milestone in the history of Bauer India,” remarks the project manager enthusiastically, since this depth is extremely unusual for excavation with a hydraulic grab. The remaining diaphragm wall elements will be installed up to a depth of 55 m. The Bauer India team has been confronted with a range of challenges in the process: For instance, the very different geological soil profiles across the four sites and retaining verticality during work require the utmost attention. What’s more, all work has to be executed under very limited spatial conditions within the city. “This project is an absolute highlight for the entire team,” explains Yogeshwaran Purushothaman. “We are unbelievably proud and motivated to master all the challenges involved.”
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