Context of the project<\/h2><\/div>Completed in 1900, the Grand Palais of the Champs Elys\u00e9es was founded on alluvial soils of varying quality, deteriorating towards the south approaching the Seine river. The south part of the building was founded on wood driven piles supporting the foundation masonry.<\/p>\n<\/div>
<\/div>Description of the project<\/h2><\/div>The recent lowering of the water led to rotting of the upper parts of the wood piles, and resulted in significant settlement. This reached up to 15 cm, creating problems for the structure. In order to save this Historical Monument, the decision was taken to underpin<\/a> the whole structure, whilst avoiding further distress.<\/p>\nIt was also decided to use this opportunity to install the required retaining wall for a proposed future underground structure to be constructed under the main hall.<\/p>\n<\/div>
Our solution<\/h2><\/div>Soletanche Bachy designed and installed a complex underpinning programme combining civil works, jet grouting and diaphragm walls whilst respecting two major constraints requested by the owner:<\/p>\n
\n- No additional settlement allowed.<\/li>\n
- Keeping the adjacent Museum in operation during the works.<\/li>\n<\/ul>\n
The diaphragm walls<\/a> were installed hard up against the existing foundations, supporting the metal structure of the main hall and the dome.<\/p>\nThe jet grouted<\/a> columns were installed under the existing structures to reinforce the foundations under the masonry. This method is ideally adapted to the proximity of adjacent structures, and the restricted working space (cellars with a head space of around 2.5 m), and allowed \u201cground concrete\u201d columns to be built under the foundations.<\/p>\nThe interface between the diaphragm wall, the jet grouting, and the existing metal structure was achieved thanks to a technique proposed by Soletanche Bachy: the underpinning was carried out using sandwich joints. Concrete blocks built under the diaphragm wall and injections of jet grouting surround the existing footings. Prestressing the whole structure transfers the anchoring load to the new foundations, without any deformation.<\/p>\n
Once this infrastructure work had been carried out to ensure the stability of the building, the Ministry of Culture\u2019s renovation programme continued with the repair of the Grand Palais\u2019s metal framework and replacement of the glass.<\/p>\n<\/div>
<\/div><\/div><\/div>Type of project:<\/h3><\/div>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/03\/Batiment.png\")
<\/a><\/span>Commercial buildings and real estate<\/h4><\/div><\/div><\/div>Location:<\/h3><\/div>France<\/a><\/p>\n<\/div>Subsidiary of Soletanche Bachy:<\/h3><\/div>Soletanche Bachy France<\/a><\/p>\n<\/div>Project owner:<\/h3><\/div>French Ministry of Culture<\/a><\/p>\n<\/div>Prime contractor:<\/h3><\/div>Architecte Monuments Historiques : A.C. Perrot<\/a>
\nArchitecte Palais Nationaux : J.L. Roubert<\/p>\n<\/div>Main contractor:<\/h3><\/div>Soletanche Bachy France<\/a><\/p>\n<\/div>Works period:<\/h3><\/div>12\/2001 \u2013 07\/2003<\/p>\n<\/div>
Types of techniques:<\/h3><\/div>![\"Paroi](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/03\/Diaphragm-wall-copie.png\")
<\/a><\/span>Diaphragm wall<\/h4><\/div><\/div><\/div>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/03\/Jet-grouting.png\")
<\/a><\/span>Jet grouting<\/h4><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/08\/Grand-Palais2-sl.jpg\")
<\/span><\/li>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/08\/P3080002bis-sl.jpg\")
<\/span><\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div>Key figures of the project<\/p><\/h2><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div>0<\/span>m\u00b2<\/span><\/div>of diaphragm wall<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>0<\/span>m<\/span><\/div>of jet grouting<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>Relative techniques<\/h2><\/div><\/div><\/div><\/i>See all the techniques<\/span><\/a><\/div><\/div><\/div>- <\/span><\/a><\/span>
Underpinning<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> Long-term preservation of existing structures For more than 60 years, Soletanche Bachy has [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t![\"\"](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2022\/05\/dsc_1746-vignette.jpg\")
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Jet grouting<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> Soil-cement columns constructed by erosion Jet grouting is a fairly common technique, but one in [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t![\"\"](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2022\/05\/CH_20160607_063_Jet-Grouting_Puits-d-essai-de-Boulogne-Billancourt_Cedric-Helsly.jpg\")
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Diaphragm wall<\/a><\/h3><\/div><\/div><\/div><\/div><\/div>
Completed in 1900, the Grand Palais of the Champs Elys\u00e9es was founded on alluvial soils of varying quality, deteriorating towards the south approaching the Seine river. The south part of the building was founded on wood driven piles supporting the foundation masonry.<\/p>\n<\/div>
Description of the project<\/h2><\/div>The recent lowering of the water led to rotting of the upper parts of the wood piles, and resulted in significant settlement. This reached up to 15 cm, creating problems for the structure. In order to save this Historical Monument, the decision was taken to underpin<\/a> the whole structure, whilst avoiding further distress.<\/p>\nIt was also decided to use this opportunity to install the required retaining wall for a proposed future underground structure to be constructed under the main hall.<\/p>\n<\/div>
Our solution<\/h2><\/div>Soletanche Bachy designed and installed a complex underpinning programme combining civil works, jet grouting and diaphragm walls whilst respecting two major constraints requested by the owner:<\/p>\n
\n- No additional settlement allowed.<\/li>\n
- Keeping the adjacent Museum in operation during the works.<\/li>\n<\/ul>\n
The diaphragm walls<\/a> were installed hard up against the existing foundations, supporting the metal structure of the main hall and the dome.<\/p>\nThe jet grouted<\/a> columns were installed under the existing structures to reinforce the foundations under the masonry. This method is ideally adapted to the proximity of adjacent structures, and the restricted working space (cellars with a head space of around 2.5 m), and allowed \u201cground concrete\u201d columns to be built under the foundations.<\/p>\nThe interface between the diaphragm wall, the jet grouting, and the existing metal structure was achieved thanks to a technique proposed by Soletanche Bachy: the underpinning was carried out using sandwich joints. Concrete blocks built under the diaphragm wall and injections of jet grouting surround the existing footings. Prestressing the whole structure transfers the anchoring load to the new foundations, without any deformation.<\/p>\n
Once this infrastructure work had been carried out to ensure the stability of the building, the Ministry of Culture\u2019s renovation programme continued with the repair of the Grand Palais\u2019s metal framework and replacement of the glass.<\/p>\n<\/div>
<\/div><\/div><\/div>Type of project:<\/h3><\/div><\/a><\/span>Commercial buildings and real estate<\/h4><\/div><\/div><\/div>Location:<\/h3><\/div>France<\/a><\/p>\n<\/div>Subsidiary of Soletanche Bachy:<\/h3><\/div>Soletanche Bachy France<\/a><\/p>\n<\/div>Project owner:<\/h3><\/div>French Ministry of Culture<\/a><\/p>\n<\/div>Prime contractor:<\/h3><\/div>Architecte Monuments Historiques : A.C. Perrot<\/a>
\nArchitecte Palais Nationaux : J.L. Roubert<\/p>\n<\/div>Main contractor:<\/h3><\/div>Soletanche Bachy France<\/a><\/p>\n<\/div>Works period:<\/h3><\/div>12\/2001 \u2013 07\/2003<\/p>\n<\/div>
Types of techniques:<\/h3><\/div><\/a><\/span>Diaphragm wall<\/h4><\/div><\/div><\/div><\/a><\/span>Jet grouting<\/h4><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>- <\/span><\/li>
- <\/span><\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div>
Key figures of the project<\/p><\/h2><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div>0<\/span>m\u00b2<\/span><\/div>of diaphragm wall<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>0<\/span>m<\/span><\/div>of jet grouting<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>Relative techniques<\/h2><\/div><\/div><\/div><\/i>See all the techniques<\/span><\/a><\/div><\/div><\/div>- <\/span><\/a><\/span>
Underpinning<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> Long-term preservation of existing structures For more than 60 years, Soletanche Bachy has [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Jet grouting<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> Soil-cement columns constructed by erosion Jet grouting is a fairly common technique, but one in [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Diaphragm wall<\/a><\/h3><\/div><\/div><\/div><\/div><\/div>
The recent lowering of the water led to rotting of the upper parts of the wood piles, and resulted in significant settlement. This reached up to 15 cm, creating problems for the structure. In order to save this Historical Monument, the decision was taken to underpin<\/a> the whole structure, whilst avoiding further distress.<\/p>\n It was also decided to use this opportunity to install the required retaining wall for a proposed future underground structure to be constructed under the main hall.<\/p>\n<\/div> Soletanche Bachy designed and installed a complex underpinning programme combining civil works, jet grouting and diaphragm walls whilst respecting two major constraints requested by the owner:<\/p>\n The diaphragm walls<\/a> were installed hard up against the existing foundations, supporting the metal structure of the main hall and the dome.<\/p>\n The jet grouted<\/a> columns were installed under the existing structures to reinforce the foundations under the masonry. This method is ideally adapted to the proximity of adjacent structures, and the restricted working space (cellars with a head space of around 2.5 m), and allowed \u201cground concrete\u201d columns to be built under the foundations.<\/p>\n The interface between the diaphragm wall, the jet grouting, and the existing metal structure was achieved thanks to a technique proposed by Soletanche Bachy: the underpinning was carried out using sandwich joints. Concrete blocks built under the diaphragm wall and injections of jet grouting surround the existing footings. Prestressing the whole structure transfers the anchoring load to the new foundations, without any deformation.<\/p>\n Once this infrastructure work had been carried out to ensure the stability of the building, the Ministry of Culture\u2019s renovation programme continued with the repair of the Grand Palais\u2019s metal framework and replacement of the glass.<\/p>\n<\/div> France<\/a><\/p>\n<\/div> Soletanche Bachy France<\/a><\/p>\n<\/div> French Ministry of Culture<\/a><\/p>\n<\/div> Architecte Monuments Historiques : A.C. Perrot<\/a> Soletanche Bachy France<\/a><\/p>\n<\/div> 12\/2001 \u2013 07\/2003<\/p>\n<\/div> Key figures of the project<\/p><\/h2><\/div> Long-term preservation of existing structures For more than 60 years, Soletanche Bachy has [...]<\/p><\/div> Soil-cement columns constructed by erosion Jet grouting is a fairly common technique, but one in [...]<\/p><\/div>Our solution<\/h2><\/div>
\n
Type of project:<\/h3><\/div>
<\/a><\/span>Commercial buildings and real estate<\/h4><\/div><\/div><\/div>
Location:<\/h3><\/div>
Subsidiary of Soletanche Bachy:<\/h3><\/div>
Project owner:<\/h3><\/div>
Prime contractor:<\/h3><\/div>
\nArchitecte Palais Nationaux : J.L. Roubert<\/p>\n<\/div>Main contractor:<\/h3><\/div>
Works period:<\/h3><\/div>
Types of techniques:<\/h3><\/div>
<\/a><\/span>Diaphragm wall<\/h4><\/div><\/div><\/div>
<\/a><\/span>Jet grouting<\/h4><\/div><\/div><\/div>
<\/span><\/li><\/span><\/li><\/ul><\/div>Relative techniques<\/h2><\/div><\/div><\/div>
Underpinning<\/a><\/h3><\/div>
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\nJet grouting<\/a><\/h3><\/div>
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\nDiaphragm wall<\/a><\/h3><\/div>
![\"\"](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2021\/01\/CH_20201109_001@1x_1.jpg\")
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n<\/ul>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/09\/CH_25012011_014_Digue-Cusset_C.Helsy-vignette.jpg\")
<\/a><\/span><\/div><\/div><\/li>\n