Milling Mall Method Construction Case: Kitashinagawa MAKP750A Permanent Construction

Cutting examples of ultra-soft soil! Use of connectable synthetic pipes, equipped with a meandering correction device for the tunneling machine.

This is an introduction to the construction achievements of the Shinagawa Ward Kitashinagawa MAKP750A main construction project (Sankyo Bridge Phase III). Initially, there was a possibility of steel sheet piles Type III and H-400 existing in the push pipe section, and it was also a river crossing push construction. It was difficult to remove obstacles from the ground, and due to the construction of ultra-soft soil, careful consideration was required. All push pipes used were synthetic pipes that could be connected, and the tunneling machine was equipped with two meandering correction devices for construction. As a result of the construction, there were no steel sheet piles Type III or H-400, and two wooden piles of approximately 250mm were cut. 【Construction Case】 ■ Project Name: Shinagawa Ward Kitashinagawa MAKP750A Main Construction Project (Sankyo Bridge Phase III) ■ Client: Tokyo Gas Co., Ltd. ■ Contractor: Nippon Steel & Sumitomo Metal P&E Corp. ■ Pipe Diameter: 900 ■ Push Length: 40.966m ■ Soil Type: Sandy silt ■ N Value/Gravel Rate/Maximum Gravel Diameter: N=0 G=0% φmax=0mm ■ Construction Period: May 2015 to July 2015 (1.5 months) ■ Type of Obstacles: Wooden piles approximately φ250mm × 2 *For more details, please refer to the PDF document or feel free to contact us.

Site and ground investigationCivil Engineering MethodSpecial Construction Method