Louis Harel de la Noë
Louis Harel de la Noë (born January 29, 1852 in Saint-Brieuc ; died October 28, 1931 in Landerneau ), full name Louis-Auguste-Marie Harel de la Noë, was a French engineer who pioneered the Reinforced concrete construction , especially in structures for railways , made a name.
Louis-Auguste-Marie Harel de la Noë was the son of the notary Pierre Louis Harel de la Noë and his wife Marguerite Jeanne Louise. He attended the Lycée Saint-Louis in Paris and from 1870 the École polytechnique , with which he had to withdraw temporarily to Bordeaux during the Franco-Prussian War . After passing the exam as one of the best, he was accepted into the École nationale des ponts et chaussées , which he left as an engineer in 1875.
At first he was u. a. involved in the construction of lighthouses and shipping canals . Stations of his work were Rodez (1877), Quimper (1878), Le Mans (1984) and Brest (1891). In the departments of Finistère and Sarthe he worked on the construction of railways. In 1885 he married Louise Riou de Kerprigent. For his achievements he was made a Knight of the Legion of Honor on December 28, 1889 .
In 1893 he became head of the Corps des ponts et chaussées in Le Mans in the Sarthe department. There he built a 127 km long network of narrow-gauge local railways and, in addition to bridges such as the “Pont en X”, also designed train stations for the Tramways de la Sarthe overland tram . Because of this work he became an officer of the Legion of Honor on July 11, 1898 and received the gold medal of the World Exhibition in 1900 .
On December 1, 1901, Harel de la Noë was appointed chief engineer of the Côtes-du-Nord department. The bridges, viaducts and retaining walls proposed by him offered new, cost-saving ways to cross the great valleys of the department by rail and climb its slopes. He met criticism of his new type of construction with reinforced concrete by exposing his filigree bridges to extraordinary loads before they were put into operation. An investigation by the Section des travaux publics du Conseil d'État also declared its construction method to be legally compliant, and in 1906 a first administrative set of rules relating to construction with reinforced concrete was published.
Harel de la Noë had dealt extensively in theory and practice with the construction material reinforced concrete, which had hardly been researched until then. In 1899 he published the essay Théories et applications nouvelles du ciment armé , the following year Déformations et conditions de la rupture dans les corps solides . In 1910 the Académie des Sciences awarded him the Prix Caméré for his work in this area.
From 1912 he tended towards standardization that allowed the prefabrication of elements on site. The First World War interrupted his work on the viaducts of Lézardrieux and on the Frémur and Jaudy rivers , which were completed by his successor. Harel de la Noë, who retired in 1918, worked as a retiree at the Croix d'Hins telegraph station near Bordeaux . He died in Landerneau in 1931.
- Buildings created by Harel de la Noë (selection)
Viaduc du Pont Noir railway bridge over the Guindy
Pont du Guildo over the Arguenon
Bridge of the narrow-gauge railway over the Rue de Gouëdic in Saint-Brieuc
The Viaduc de Bréhec, begun in 1913, was not completed until 1922
Individual evidence
- ↑ a b c d e f Laurent Goulhen: L'album du Petit Train des Côtes du Nord . Association des Chemins de Fer des Côtes-du-Nord, Morlaix 2005, p. 34 ff .
- ↑ a b c Harel de la Noë at bibli-aleph.polytechnique.fr, accessed on January 7, 2018 (Chapter “La famille polytechnicienne”, enter Louis Harel de la Noë, Envoi)
| personal data | |
|---|---|
| SURNAME | Harel de la Noë, Louis |
| ALTERNATIVE NAMES | Harel de la Noë, Louis-Auguste-Marie (full name) |
| BRIEF DESCRIPTION | French engineer |
| DATE OF BIRTH | January 29, 1852 |
| PLACE OF BIRTH | Saint-Brieuc |
| DATE OF DEATH | October 28, 1931 |
| Place of death | Landerneau |