Foundation piles and submerged wall of berths 6, 7 and 8 at the Port of Maputo

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Publication Title
Foundation piles and submerged wall of berths 6, 7 and 8 at the Port of Maputo

Abstract
The Maputo Port Development Company decided in June 2018 to proceed with the rehabilitation of berths 6, 7, and 8 of the Port of Maputo, with 630 meters long, which involved the demolition of the existing quay, to build new quay infrastructures ready to service depths of -16,0 m (CD). The existing berths with construction dates between 1913 (Berth 6) and 1951 (Berth 8) were extremely damaged and partially destroyed, and the future quay consisting of a combiwall of 2032 x 22 mm piles and double AZ28-700 intermediate sheet piles, required the execution by maritime means, with significant disturbance in the port operations. Based on the experience developed over the years in maritime works, Mota-Engil proposed an alternative solution to the Employer’s design, consisting of a pile supported concrete deck and a submerged combiwall to retain the existing slope to be dredged, which minimized the mobilization of human and material resources using a more simplified and systematized approach of construction processes. This communication addresses the construction aspects, namely the cantitravel method adopted for the execution of the piles in maritime environment and the driving of the combiwall to be installed under water.
Authors
J. Santos; L. Tomas

Published In

18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)

Theme

D - Current and new construction methods

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