Global Patent Index - EP 3234277 B1

EP 3234277 B1 20240626 - PROCESS FOR PROVIDING PRE-STRESSED CONSTRUCTIONS AND ELEMENTS BY SMA TENSIONNING ELEMENTS AND A CONSTRUCTION AND ELEMENT FITTED WITH SUCH SMA TENSIONNING ELEMENTS

Title (en)

PROCESS FOR PROVIDING PRE-STRESSED CONSTRUCTIONS AND ELEMENTS BY SMA TENSIONNING ELEMENTS AND A CONSTRUCTION AND ELEMENT FITTED WITH SUCH SMA TENSIONNING ELEMENTS

Title (de)

VERFAHREN ZUM ERSTELLEN VON VORGESPANNTEN BAUWERKEN UND BAUTEILEN MITTELS FGL-ZUGELEMENTEN SOWIE DAMIT AUSGERÜSTETES BAUWERK UND BAUTEIL

Title (fr)

PROCÉDURE POUR CONSTRUIRE DES STRUCTURES PRÉCONTRAINTES ET DES ÉLÉMENTS PRÉCONTRAINTS PAR DES ÉLÉMENTS DE PRÉCONTRAINTE EN AMF ET UNE STRUCTURE ET UN ÉLÉMENT ÉQUIPÉS D'UN TEL ÉLÉMENT DE PRÉCONTRAINTE

Publication

EP 3234277 B1 20240626 (DE)

Application

EP 15817138 A 20151214

Priority

  • CH 19802014 A 20141218
  • EP 2015079607 W 20151214

Abstract (en)

[origin: WO2016096737A1] The method is distinguished in that at least one tension element (1), for example in the form of a flat steel composed of a shape memory alloy of polymorphic and polycrystalline structure which can be brought from its state as martensite to its permanent state as austenite by increasing its temperature, is placed on the structure or structural part (2). This tension element (1) can also be guided around one or more corners (5). One or more end anchors (4) penetrate into the structure or structural part (2). Such a flat steel can also wrap one or more times as a band around a structure or structural part (2), in which case the two ends of the flat steel are either connected to one another so as to be fixed in terms of tensile force or are each separately connected to the structure or structural part (2) by one or more end anchors (4) which penetrate into said structure or structural part (2), or else intersect one or more times to produce a clamping connection. The flat steel (1) contracts as a result of a subsequent active and controlled input of heat using heating means and generates a permanent tensile stress and correspondingly a permanent prestress on the structure or the structural part (2). A structure or structural part thus equipped is characterized in that it has at least one tension element (1) composed of a shape memory alloy which extends along the outer side of the structure or structural part and is connected thereto by means of end anchors (4). Alternatively, the structure or structural part (2) can also be completely enclosed by a tension element (1) in the form of a flat steel as a band, wherein the two end regions are connected so as to be fixed in terms of tensile force, and the flat steel is permanently prestressed by the input of heat.

IPC 8 full level

E04C 5/01 (2006.01); B23P 6/04 (2006.01); C22C 38/00 (2006.01); C22C 38/10 (2006.01); C22C 38/14 (2006.01); E04C 5/08 (2006.01); E04G 21/12 (2006.01); E04G 23/02 (2006.01)

CPC (source: CH CN EP KR US)

C22C 38/00 (2013.01 - EP KR US); C22C 38/105 (2013.01 - EP US); C22C 38/14 (2013.01 - EP US); E04B 1/06 (2013.01 - CH); E04C 5/01 (2013.01 - CH CN EP US); E04C 5/08 (2013.01 - CH EP KR US); E04G 21/12 (2013.01 - CN EP KR US); E04G 23/0218 (2013.01 - CH CN EP KR US); E04G 23/0225 (2013.01 - CN EP KR US); E04C 5/08 (2013.01 - CN); E04G 2021/127 (2013.01 - CN EP KR US); Y10T 29/49632 (2015.01 - EP US); Y10T 29/49863 (2015.01 - EP US); Y10T 29/49865 (2015.01 - EP US)

Citation (examination)

  • SOROUSHIAN PARVIZ ET AL: "Repair and Strengthening of Concrete Structures Through Application of Corrective Posttensioning Forces with Shape Memory Alloys SELECTION AND CHARACTERIZATION OF IRON-BASED SHAPE MEMORY ALLOYS", 31 December 2001 (2001-12-31), XP055794828, Retrieved from the Internet <URL:https://journals.sagepub.com/doi/pdf/10.3141/1770-03> [retrieved on 20210413]
  • JANKE L ET AL: "Applications of shape memory alloys in civil engineering structures - Overview, limits and new ideas", MATERIALS AND STRUCTURES, LONDON, GB, vol. 38, 1 June 2005 (2005-06-01), pages 578 - 592, XP002516103, ISSN: 1359-5997, DOI: 10.1617/14323
  • EUNSOO CHOI ET AL: "The confining effectiveness of NiTiNb and NiTi SMA wire jackets for concrete", SMART MATERIALS AND STRUCTURES, IOP PUBLISHING LTD., BRISTOL, GB, vol. 19, no. 3, 1 March 2010 (2010-03-01), pages 35024, XP020175634, ISSN: 0964-1726

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2016096737 A1 20160623; CA 2971244 A1 20160623; CA 2971244 C 20230221; CH 710538 A2 20160630; CH 710538 B1 20180928; CN 107407100 A 20171128; CN 107407100 B 20200221; EP 3234277 A1 20171025; EP 3234277 B1 20240626; KR 102445949 B1 20220920; KR 20170125321 A 20171114; US 10246887 B2 20190402; US 2017314277 A1 20171102

DOCDB simple family (application)

EP 2015079607 W 20151214; CA 2971244 A 20151214; CH 19802014 A 20141218; CN 201580076856 A 20151214; EP 15817138 A 20151214; KR 20177020118 A 20151214; US 201515537295 A 20151214