{"id":5208,"date":"2023-09-15T18:21:29","date_gmt":"2023-09-15T16:21:29","guid":{"rendered":"https:\/\/www.bachy-soletanche.com.hk\/?post_type=avada_portfolio&p=5208"},"modified":"2024-07-24T09:37:07","modified_gmt":"2024-07-24T07:37:07","slug":"diaphragm-walls","status":"publish","type":"avada_portfolio","link":"https:\/\/www.bachy-soletanche.com.hk\/offer-portfolio\/diaphragm-walls\/","title":{"rendered":"Diaphragm Walls"},"content":{"rendered":"

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Introduction<\/strong><\/p>\n<\/div>

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Bachy Soletanche has pioneered the diaphragm wall technique in the South-East Asia region and has successfully completed numerous building and infrastructure projects in Hong Kong and Macau.<\/strong><\/p>\n<\/div>

The diaphragm wall is a method frequently used to provide a permanent support of excavation, build or deep continuous cut-off walls.<\/p>\n

This can be used for all types of structures \u2013 underground stations, buildings, car parks, tanks, dams \u2013 and in all types of soil and rock.<\/p>\n

This method is suitable for urban environment, when working close to existing structures though a minimum clearance is required for the thickness of the guide wall. It is particularly suited to excavations carried out below the water table.<\/p>\n<\/div>

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Implementation<\/strong><\/p><\/h2><\/div>

A diaphragm wall is a reinforced concrete wall that is cast in sections or panels excavated in the ground. The trench, which can reach 90m depth and beyond held open during excavation, and installation of reinforcement and concrete by the use of a supporting slurry.<\/span><\/p>\n

The diaphragm wall thicknesses are usually: 0.80m; 1.00m; 1.20m; 1.50m; 1.80m.<\/span><\/p>\n

A mechanical or hydraulic grab or a Hydrofraise\u00ae (technology developed by Soletanche Bachy) is used depending on the type of soil encountered.<\/span><\/p>\n<\/div>

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Our Processes<\/p><\/h2><\/div>

In general, the construction of a diaphragm wall follows the following steps:<\/span><\/p>\n<\/div>

Step 1<\/strong><\/h3>\n

The temporary guide walls are constructed in advance and consist of two reinforced-concrete sections each about 30cm thick and 1m deep. The guide-walls have several functions:<\/p>\n