Method for erecting a structure made of prefabricated concrete elements and associated structure

Patent metadata

Field	Value
Publication number	US-9951513-B2
Application number	US-201414908400-A
Country	US
Kind code	B2
Filing date	Jul 28, 2014
Priority date	Jul 30, 2013
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

The invention relates to a method for erecting a structure 0 comprising at least two prefabricated concrete elements 1, 2 , the method comprising:
installing a first concrete element 1; placing a second concrete element 2 with at least one spacer 4 maintaining a gap between respective end faces 104, 203 of the first element and second element; tensioning at least one bar 105, 3 held on the first and second elements and passing through the gap maintained by the spacer, and introducing a hardenable interface product 5 into said gap.

The method thus makes it possible to move off the critical path relating to the erection the need to wait, between two assembly operations, for the joints between the assembled pieces to have hardened. Incidentally, a significant reduction in the time taken for erecting such a structure is obtained.

First claim

The invention claimed is:

1. A method for erecting a structure comprising a first element and a second element, the first and second elements being prefabricated concrete elements, the method comprising:
obtaining the first element;
placing the second element with at least one spacer maintaining a gap between a face of the first element and a face of the second element;
tensioning at least one bar fastened to the first and second elements and passing through the gap maintained by the spacer, and
putting an interface product which is hardenable in said gap,
wherein the bar comprises a first segment extending in the first element and a second segment extending in the second element, at least one of said first and second elements comprising a channel which leads to the face thereof, said channel receiving the first segment or the second segment when the second element is placed relative to the first element with said gap therebetween,
wherein the first and second segments are initially two distinct pieces, the bar further comprising a coupler for assembling the first and second segments, and
wherein the first segment of the bar is embedded in a concrete region of the first element, and the coupler comprises:
a threaded coupling terminating the first segment of the bar in line with the face of the first element; and
a thread formed on the second segment of the bar, said thread being engaged in the threaded coupling in order to join the first and second segments of the bar.

2. The method according to claim 1 , in which a sealing product which is hardenable is injected into the channel after the bar is tensioned in order to make the bar adhere to walls of said channel.

3. The method according to claim 1 , in which one of the first and second segments of the bar is embedded in a concrete region of the first or second element, and the other segment of the bar is fitted into said channel when the second element is placed relative to the first element with said gap therebetween.

4. The method according to claim 1 , in which the segment of the bar received in said channel has a threaded end opposite to the other segment of the bar among the first and second segments, said threaded end being accessible after the second element is fitted and receiving a nut for assembling the first and second elements.

5. The method according to claim 4 , in which the threaded end is accessible in a niche formed in a wall of the element comprising said channel, said wall being adjacent to said gap.

6. The method according to claim 5 , in which a sealing product which is hardenable is injected into the channel and into the niche after the bar is tensioned in order to make the bar adhere to the element having said channel among the first and second element and to at least partially fill in the niche by coating the nut and the threaded end of the segment of the bar.

7. The method according to claim 1 , in which the tensioning of the bar comprises applying a tensile force to at least one end of the bar.

8. The method according to claim 7 , in which the bar has at least one threaded end and the tensile force is applied by tightening a nut on said threaded end.

9. The method according to claim 1 , in which the first and second elements are fastened by the bar, the tensioning of the bar further comprising applying a compression force which acts to widen said gap.

10. The method according to claim 9 , in which the spacer comprises a chamber in which a fluid is injected under pressure in order to apply said compression force when the bar is tensioned.

11. The method according to claim 1 , in which at least part of the interface product is placed in said gap while the second concrete element is being placed relative to the first element with said gap therebetween.

12. A method for erecting a structure comprising a first element and a second element, the first and second elements being prefabricated concrete elements, the method comprising:
obtaining the first element;
placing the second element with at least one spacer maintaining a gap between a face of the first element and a face of the second element;
tensioning at least one bar fastened to the first and second elements and passing through the gap maintained by the spacer, and
putting an interface product which is hardenable in said gap,
wherein the first and second elements are fastened by the bar, the tensioning of the bar further comprising applying a compression force which acts to widen said gap, and
wherein the spacer comprises a chamber in which a fluid is injected under pressure in order to apply said compression force when the bar is tensioned.

13. A method for erecting a structure comprising a first element and a second element, the first and second elements being prefabricated concrete elements, the method comprising:
obtaining the first element;
placing the second element with at least one spacer maintaining a gap between a face of the first element and a face of the second element;
tensioning at least one bar fastened to the first and second elements and passing through the gap maintained by the spacer, and
putting an interface product which is hardenable in said gap,
wherein the bar comprises a first segment extending in the first element and a second segment extending in the second element, at least one of said first and second elements comprising a channel which leads to the face thereof, said channel receiving the first segment or the second segment when the second element is placed relative to the first element with said gap therebetween, and
wherein a sealing product which is hardenable is injected into the channel after the bar is tensioned in order to make the bar adhere to walls of said channel.

14. A method for erecting a structure comprising a first element and a second element, the first and second elements being prefabricated concrete elements, the method comprising:
obtaining the first element;
placing the second element with at least one spacer maintaining a gap between a face of the first element and a face of the second element;
tensioning at least one bar fastened to the first and second elements and passing through the gap maintained by the spacer, and
putting an interface product which is hardenable in said gap,
wherein the bar comprises a first segment extending in the first element and a second segment extending in the second element, at least one of said first and second elements comprising a channel which leads to the face thereof, said channel receiving the first segment or the second segment when the second element is placed relative to the first element with said gap therebetween, and
wherein one of the first and second segments of the bar is embedded in a concrete region of the first or second element, and the other segment of the bar is fitted into said channel when the second element is placed relative to the first element with said gap therebetween.

Assignees

• Soletanche Freyssinet

Inventors

• Ladret Patrick
• Buchin-Roulie Vanessa
• Melen Benoît

Classifications

• E04H12/12

  of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements · CPC title

• Y02E10/728

  Onshore wind turbines · CPC title

• E04H12/34

  Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like · CPC title

• E04B1/043 Primary

  Connections specially adapted therefor · CPC title

• E04C5/0645

  Shear reinforcements, e.g. shearheads for floor slabs · CPC title