EP 3234277 A1 20171025 - METHOD FOR PRODUCING PRESTRESSED STRUCTURES AND STRUCTURAL PARTS BY MEANS OF SMA TENSION ELEMENTS, AND STRUCTURE AND STRUCTURAL PART EQUIPPED THEREWITH
Title (en)
METHOD FOR PRODUCING PRESTRESSED STRUCTURES AND STRUCTURAL PARTS BY MEANS OF SMA TENSION ELEMENTS, AND STRUCTURE AND STRUCTURAL PART EQUIPPED THEREWITH
Title (de)
VERFAHREN ZUM ERSTELLEN VON VORGESPANNTEN BAUWERKEN UND BAUTEILEN MITTELS SMA-ZUGELEMENTEN SOWIE DAMIT AUSGERÜSTETES BAUWERK UND BAUTEIL
Title (fr)
PROCÉDÉ POUR LA RÉALISATION D'OUVRAGES DE CONSTRUCTION ET D'ÉLÉMENTS DE CONSTRUCTION PRÉCONTRAINTS AU MOYEN D'ÉLÉMENTS DE TRACTION SMA ET OUVRAGE DE CONSTRUCTION ET ÉLÉMENT DE CONSTRUCTION AINSI ÉQUIPÉ
Publication
Application
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); 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)
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
Designated extension state (EPC)
BA ME
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; EP 3234277 B8 20240731; EP 3234277 C0 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