EP1239083A2 - Bauwerk mit Wandungen mit im wesentlichen verbundfrei angeordneten Spanngliedern - Google Patents
Bauwerk mit Wandungen mit im wesentlichen verbundfrei angeordneten Spanngliedern Download PDFInfo
- Publication number
- EP1239083A2 EP1239083A2 EP02450039A EP02450039A EP1239083A2 EP 1239083 A2 EP1239083 A2 EP 1239083A2 EP 02450039 A EP02450039 A EP 02450039A EP 02450039 A EP02450039 A EP 02450039A EP 1239083 A2 EP1239083 A2 EP 1239083A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tendons
- walls
- cross
- section
- deflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
Definitions
- the invention relates to a building Walls with essentially no connections, especially outside the walls, arranged, for. B. constructed with strands, Tendons.
- Buildings are made with a wide variety of materials, Stone, brick, concrete, steel, aluminum, plastic u. Like., built. Some of these materials have low tensile strength however, high compressive strength, so that to increase the Tensile strength additional compressive stresses are applied.
- a typical example of building materials of this type is concrete. These compressive forces can either be due to being embedded in the concrete pre-stressed clamping elements before the concrete sets be introduced or through into the concrete before setting arranged tendons, which only after solidification of the concrete. Through this tension, as already stated, pressure is exerted on the concrete, so that at The action of tensile forces first compensates for the compressive forces Need to become.
- z. B. made of concrete or steel, by externally arranged Tendons can be attached an additional force.
- These externally arranged tendons which also follow Completion of the construction is only subject to forces there is the possibility of reducing the load-bearing capacity of concrete structures, Steel structures or the like are not arbitrary but to increase significantly.
- This Construction variant can also be provided for concrete bridges be, externally arranged tendons alone or together can absorb the forces with internal tendons.
- the Forces for example on a pillar, via a deflecting part derived.
- This deflecting part is for the durability of the tendons of great importance, for example, no kinking occur or there should be no notch effect.
- the object of the present invention is to create a structure with external prestressing, one exact predestined deflection of the tendons can be achieved can and also replaced individual tendons for themselves can also be pressure-wise without the other tendons to relieve.
- tendons By the extern Arranged tendons will make it easy to replace them and also allows an additional reinforcement of a building. Under walls are also z. B. webs or cross members to understand at bridges.
- an anti-corrosion compound such as greases
- one encasing the tendons and the anti-corrosion compound Sheath for example made of plastic, can be both chemical destruction as well as mechanical destruction with lesser means can simply be avoided.
- the tendons need to exert tensile forces on the structure allow to be fixed at their ends, at least the tensile forces are applied at one end for tensioning.
- the deflection part is made of plastic, in particular polyethylene, optionally with a Shore hardness D between 60 and 65 built, so on the one hand is the required constant redirection of the tendon and on the other hand the required high deflection part force capacity guaranteed.
- the recesses each arranged in a part essentially enclose half of the circumference of the tendons, so the deflection part can be placed particularly easily in the deflection area because a gradual build-up is possible, and each the tendons are inserted in the recesses and not along the recess must be made.
- the covering is flame retardant and / or heat insulating, so can with extreme thermal stresses, such as for example fires, an impairment of the mechanical Properties of the tendons are prevented or temporally postponed, so that in the event of an accident the durability of Buildings and their load-bearing capacity over long periods of time is.
- the envelope is formed in two parts, one first part overlaps another part on both sides, one can such a sheath can be assembled particularly easily, wherein no additional clamps or adhesives to hold the Wrapping on the tendons is required.
- the first part represents an angle in cross section, which has extensions at the end regions which are transverse, in particular normal, to the legs of the angle of the first part run, which extensions leg of the further part, with a cross section of an angle, so that a mutual Anchoring the parts of the casing can be achieved with an elastic, especially rubber-elastic, Material a mutual fixation of the tendon can be realized particularly easily.
- the bridge shown schematically in Fig. 1 has I-beams 1 made of steel, which on the pillars 2 via not shown Rest camp.
- the pillars 2 are also about essays 3 extended upwards on which deflection parts 4 are arranged are.
- the tendons 6 are on the deflection parts 4, the are carried by the pillars 2 or by the I-beam 1, deflected.
- Conventional deflection saddles are made of concrete, for example which deflection parts made of sheet steel or polyethylene are inserted are. Such saddles are also known, which are made of stainless Steel are built in which a polytetrafluoroethylene film are laid to reduce friction.
- the tendons can be single wires, strands and Bundle ropes, such as those in the EP 0 393 013 B1 are described. These tendons are on their ends in the beams, in the present case in the I-beam fixed, both a firm anchoring of the tendons as well as anchoring with pulling heads is provided in order to Presses to apply a preload. During this tempering there is an expansion of the actual load-bearing tendons, i.e. the wires or the strands made of metal. This stretching can be done in such a way that, for example, the strand within its Wrapping made of polyethylene glides. This is from an inner Slip talked or it can be the tendon together with of its cover slide on the deflecting part. In this case an outer glide.
- the essay 3 which made of concrete, metal, for example steel, or other dimensionally stable Materials can exist on its top End of a sliding surface 7.
- This sliding surface 7 is for example circular or parabolic in cross section. In any case there is a constant area.
- the deflection part 4 can either by itself already have a curvature along a continuous curve or this curvature only when the tendons are loaded receive.
- seals 8 shown in dashed lines, which consists of a rubber elastic Material are built up on the one hand on the deflecting part 4 sealing fit and have circular recesses through which the tendons are sealingly guided.
- the steel tension members 6a slide in their casing 6b, which is circular in cross section Polyethylene, as shown with a double arrow. It lays here the inner glide.
- the tendons 6 slide in their entirety, that is also with the cover 6b, in the deflection part. It's here outer sliding.
- the deflection part 4 shown in Fig. 4 is made up of individual Parts 9 constructed from polyethylene (Shore hardness D 62), optionally reinforced with carbon fibers.
- the cylindrical recesses 10, which are continuous Represent areas are provided such that approximately each half is arranged in one of the parts 9.
- the recesses are spaced from each other, with between them Elevations 11 are arranged so that the recesses 10 and thus also the tendons 6 to be arranged therein at a distance are arranged to each other.
- the tendons 6 are, as in Fig. 5 shown, constructed in a band shape, the steel tension members is provided with a partially circular polyethylene jacket 6b, which has webs 6c, so that several steel tension members are summarized in one volume.
- the deflection part 4 can also in cross section round, in particular circular, the cylindrical recesses 10 offset from each other are, so that there is less space required than he for example in the arrangement of FIG. 4, in which the cylindrical recesses are arranged one above the other, is present.
- This deflection part 4 rests on a sliding surface is partly circular in cross-section on the one hand and on the other hand in Clamping direction, i.e. in the direction of the tendons 6, part-circular or parabolic or the like.
- the tendons which are circular in cross section, are in Fig. 7 shown.
- the steel tension member is designed as a strand, the steel wires 15 spiraling around a central straight continuous steel wire 16 are arranged and by one Sheath 17 are surrounded by polyethylene. The gaps are between the steel wires 15 and 16 and the jacket 17 filled with an anti-corrosion agent.
- the tendons can be between the deflection parts surrounded by an envelope, as shown in FIGS. 8 to 10 his.
- the envelope 13 shown in Fig. 8 is with two Semi-cylindrical jackets 13a and 13b built, whereas the sheath 14 in FIG. 9 has a spiral separating surface 15, so that the covering can be easily applied and at the same time through the inherent elasticity of the material, for example Polyethylene, polypropylene or the like, a fixed connection of the individual parts of the deflecting part is ensured.
- the 10 has two angular profiles 18, 19th that overlap each other. The first part of the angle 19 points two mutually normal legs 19a, 19b and the further part of the angle 18 legs 18a, 18b, which also stand on each other normally.
- the legs have 19a and 19b Extensions 20 and 21 on, which are normal to the thighs 19a and 19b extend and the legs 18a and 18b of the grip another part 18 elastically.
- This is a stable shape Wrapping created at a rubbery Material also by springing apart the legs with the extensions can be easily assembled.
- the wrappings can contain flame retardant fillers, z. B. phosphates or fillers, for. B. vermiculite, contain which reduce heat conduction.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Building Environments (AREA)
Abstract
Description
- Fig. 1
- eine Brücke mit Stahlträgern und externen Spanngliedern,
- Fig. 2
- und 3 den Verlauf der externen Spannglieder an der Umlenkung,
- Fig. 4
- einen im Querschnitt rechteckigen Umlenkteil,
- Fig. 5
- Stahlzugglieder mit bandförmiger Umhüllung,
- Fig. 6
- einen im Querschnitt kreisförmigen Umlenkteil,
- Fig. 7
- eine umhüllte Litze,
- Fig. 8, 9 und 10
- Hüllrohre.
Claims (9)
- Bauwerk mit Wandungen mit im wesentlichen verbundfrei, insbesondere außerhalb der Wandungen, angeordneten, z. B. mit Litzen aufgebauten, Spanngliedern (6), die insbesondere von einer Korrosionsschutzmasse umgeben sind, und mit einem die Spannglieder (6) und gegebenenfalls die Korrosionsschutzmasse umhüllenden im Querschnitt in sich materialbündig geschlossenen Mantel aus Kunststoff od. dgl., aufgebaut sind, welcher insbesondere im Querschnitt im wesentlichen rund, vorzugsweise kreisförmig, ist, wobei zumindest deren Enden, insbesondere in den Wandungen, festgelegt sind, und die Spannglieder (6) zwischen ihren Enden in ihrer Spannrichtung entlang einer in dieser Richtung stetig verlaufenden Fläche eines Umlenkteiles (4) umgelenkt sind, dadurch gekennzeichnet, daß der Umlenkteil (4) eine Vielzahl von in Abstand zueinander angeordnete Ausnehmungen (10) mit den stetig verlaufenden Flächen aufweist, und der umhüllende Mantel der Spannglieder zumindest teilweise, insbesondere zumindest zu einem Drittel, von diesen Flächen umgeben ist, wobei die Spannglieder (6) durch in Spannrichtung verlaufende Erhebungen (11) in Abstand zueinander gehalten sind.
- Bauwerk nach Anspruch 1, dadurch gekennzeichnet, daß der Umlenkteil (4) aus Kunststoff, insbesondere Polyethylen, gegebenenfalls mit einer Shorehärte D zwischen 60 und 65, aufgebaut ist.
- Bauwerk nach Anspruch 2, dadurch gekennzeichnet, daß der Kunststoff mit Fasern, z. B. Kohlenstofffasern, verstärkt aufgebaut ist.
- Bauwerk nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß der Umlenkteil (4) mehrteilig ausgebildet ist, wobei die jeweils in einem Teil angeordneten Ausnehmungen (10) im wesentlichen die Hälfte des Umfanges der Spannglieder (6) umschließen.
- Bauwerk nach einem der Anspruch 1 bis 4, dadurch gekennzeichnet, daß zwischen den Spanngliedern (6) und dem Umlenkteil (4) an beiden Enden Abdichtungen (8) vorgesehen sind.
- Bauwerk nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Spannglieder zwischen den Umlenkteilen (4) von einer Umhüllung (13a, 13b, 14, 18 und 19) umgeben sind.
- Bauwerk nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Umhüllung (13a, 13b, 14, 18 und 19) flammhemmend und/oder wärmeisolierend ist.
- Bauwerk nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Umhüllung zweiteilig ausgebildet ist, wobei ein erster Teil einen weiteren Teil beidseits übergreift (Fig. 8 und 10).
- Bauwerk nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der erste Teil (19) im Querschnitt einen Winkel darstellt, der an den Endbereichen Fortsätze (20, 21) aufweist, die quer, insbesondere normal, zu den Schenkeln (19a, 19b) des Winkels des ersten Teiles (19) verlaufen, welche Fortsätze (19a, 19b) Schenkel (18a, 18b) des weiteren Teiles (18), mit einem Querschnitt eines Winkels, übergreifen.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT3492001A AT412221B (de) | 2001-03-06 | 2001-03-06 | Bauwerk mit wandungen mit im wesentlichen verbundfrei angeordneten spanngliedern |
| AT3492001 | 2001-03-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1239083A2 true EP1239083A2 (de) | 2002-09-11 |
| EP1239083A3 EP1239083A3 (de) | 2003-11-12 |
Family
ID=3672385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02450039A Withdrawn EP1239083A3 (de) | 2001-03-06 | 2002-02-28 | Bauwerk mit Wandungen mit im wesentlichen verbundfrei angeordneten Spanngliedern |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1239083A3 (de) |
| AT (1) | AT412221B (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006030069A1 (de) * | 2006-06-28 | 2008-01-03 | Kamphues, Andreas, Dipl.-Ing. | Spannglied und Verfahren zur Herstellung desselben |
| WO2008070889A1 (de) * | 2006-12-11 | 2008-06-19 | Hermann Thal | Bewehrung von betonkonstruktionen |
| CN113958053A (zh) * | 2021-10-14 | 2022-01-21 | 扬州大学 | 一种预应力木结构房屋及其装配方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB897351A (en) * | 1960-03-04 | 1962-05-23 | Stressed Concrete Design Ltd | Cable locating device for pre-stressed structures |
| DE1291093B (de) * | 1966-07-21 | 1969-03-20 | Buehrer Erwin | Huellrohr fuer Spannglieder in Betonbauteilen |
| DE3505470A1 (de) * | 1985-02-16 | 1986-10-09 | Thyssen Industrie Ag, 4300 Essen | Sattellager fuer seilabgespannte konstruktionen |
| DE3731722A1 (de) * | 1987-09-21 | 1989-04-06 | Suspa Spannbeton Gmbh | Umlenkkoerper fuer spannelemente eines spanngliedes zur vorspannung von spannbetontragwerken |
| DE4319888C2 (de) * | 1993-06-16 | 1996-10-02 | Dyckerhoff & Widmann Ag | Rohrförmige Ummantelung für ein Zugglied |
| DE19858001A1 (de) * | 1998-12-16 | 2000-06-21 | Bilfinger Berger Bau | Externes Spannglied |
| US6065257A (en) * | 1999-05-24 | 2000-05-23 | Hubbell, Roth & Clark, Inc. | Tendon alignment assembly and method for externally reinforcing a load bearing beam |
| DE19928445B4 (de) * | 1999-06-23 | 2007-10-04 | Suspa Spannbeton Gmbh | Ausbildung einer Umlenk-Gleitstelle für Spannglieder |
-
2001
- 2001-03-06 AT AT3492001A patent/AT412221B/de not_active IP Right Cessation
-
2002
- 2002-02-28 EP EP02450039A patent/EP1239083A3/de not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006030069A1 (de) * | 2006-06-28 | 2008-01-03 | Kamphues, Andreas, Dipl.-Ing. | Spannglied und Verfahren zur Herstellung desselben |
| WO2008070889A1 (de) * | 2006-12-11 | 2008-06-19 | Hermann Thal | Bewehrung von betonkonstruktionen |
| CN113958053A (zh) * | 2021-10-14 | 2022-01-21 | 扬州大学 | 一种预应力木结构房屋及其装配方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA3492001A (de) | 2004-04-15 |
| EP1239083A3 (de) | 2003-11-12 |
| AT412221B (de) | 2004-11-25 |
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