EP1141488A1 - Externes spannglied - Google Patents
Externes spanngliedInfo
- Publication number
- EP1141488A1 EP1141488A1 EP99966874A EP99966874A EP1141488A1 EP 1141488 A1 EP1141488 A1 EP 1141488A1 EP 99966874 A EP99966874 A EP 99966874A EP 99966874 A EP99966874 A EP 99966874A EP 1141488 A1 EP1141488 A1 EP 1141488A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cladding tube
- tendon
- spacer
- tension elements
- spacers
- 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- Withdrawn
Links
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 tendon with at least one tension element and a common cladding tube for all tension elements of the tendon.
- Such tendons are used in practice for prestressing buildings of all kinds, and they often have to be guided over a deflection point or a deflection area. Care must be taken to ensure that there are no kinks in the cladding tube and in the tensile elements that impair the load-bearing capacity of the tendon. It is also important to ensure that the tension elements are not damaged or attacked by substances penetrating the cladding tube. After tensioning the tension elements, the cavity remaining in the cladding tube is therefore often filled with a hardening, space-filling mass, which not only increases the load-bearing capacity of the tendon, but also provides protection for the tension elements.
- the present invention is based on the object of designing and developing the known tendon such that the tension elements are always and in particular also arranged at the deflection points at a minimum distance from the inner wall of the cladding tube.
- the tendon according to the invention achieves the above object by the features of claim 1.
- the aforementioned tension member is designed such that at least one spacer is arranged within the cladding tube, which prevents the tension elements from contacting the cladding tube wall at least in the region of the spacer.
- positioning aids for the tension elements can also be arranged within the cladding tube of a tendon. Furthermore, it has been recognized that the pulling elements can be kept at a distance from the cladding tube wall in a simple manner by means of a positioning aid in the form of a spacer.
- the present invention can be implemented with various structural designs of a spacer.
- ring-shaped or tubular spacers have been found, which are arranged quasi concentrically to the cladding tube.
- Such tendons are particularly easy to assemble and prefabricate, since the orientation of the spacers is otherwise not critical and the tension elements can be inserted into the tendon just as with conventional tendons, namely by guiding the tension elements through the annular or tubular spacers.
- the inner surface of the spacers namely the surface on which the tension elements are supported, is rounded in the direction of the cladding tube axis.
- a kink-shaped course of the tension elements in deflection areas of the tendon can be defused or even avoided.
- the insertion of the tension elements into the cladding tube is simplified.
- the cladding tube and the tension elements of a tendon are generally flexible, i.e. bendable, since tendons - as already mentioned - often have to be guided over deflection areas.
- tendons are usually pre-assembled at the factory and transported to the site in a drum.
- the tendon according to the invention also advantageously has the flexibility required for transport and installation in surrounding areas.
- the spacers could be designed to be at least as flexible in the direction of the cladding tube axis as the cladding tube itself.
- Another advantageous possibility is to arrange a plurality of narrow spacers within the cladding tube, so that the arrangement of the appropriately dimensioned spacers is flexible, in particular bendable, at least in the direction of the cladding tube axis , is.
- the arrangement of the spacers inside the cladding tube should in any case not significantly increase the bending stiffness of the cladding tube.
- spacing elements are arranged between the spacers within the cladding tube, which ensure a minimum distance between two adjacent spacers.
- These spacer elements can advantageously also be annular or tubular and be arranged concentrically to the cladding tube, so that the tension elements both through the spacers and through the spacer elements are led.
- the inner surfaces of the spacer elements should be set back in relation to the inner surfaces of the adjacent spacer elements in the direction of the cladding tube wall, so that the traction elements can be completely embedded in the space-filling mass when the cladding tube is subsequently filled, at least in the region of the spacer elements.
- the spacer elements are flexible, in particular bendable, at least in the direction of the cladding tube axis.
- Thin-walled tubes can be used as spacer elements, which have a certain flexibility due to a corrugated, perforated or slotted tube wall, for example.
- the action of the spacer elements can be based on pressure contact with the adjacent spacers.
- the spacer elements and the spacers do not have to be connected to one another.
- the spacers and the spacer elements are connected to one another in a chain-like manner, so that the spacer elements can also act to transmit tension.
- the spacer elements can also be implemented in the form of a wire structure or in the form of a textile structure.
- the spacers and the spacer elements can either be arranged loosely in the cladding tube or can also be fixed within the cladding tube with the aid of fixing means. This proves to be particularly advantageous if the spacers are to be held in a specific, defined position.
- a screw could easily be provided as the fixing means, via which a spacer or a spacer element can be screwed to the cladding tube.
- Another possibility of fixing the position of spacers and / or spacing elements is to narrow the cladding tube under the diameter of the spacing elements and spacers.
- the invention relates to a device for prestressing structures with at least one tendon, wherein the tendon has at least one tension member. ment and a common cladding tube for all tension elements of the tendon, and with at least one structure arranged on the bearing device for the tendon, wherein the bearing device comprises at least one molded part for deflecting the tendon.
- the cladding tube of a tendon is often filled with a hardening mass after assembly and after tensioning the tension elements.
- the tensioning of the tension elements after hardening of the filling compound is generally no longer possible.
- the tension elements then form a bond with the cladding tube via the hardened mass, which in turn is in direct contact with the structure in the deflection areas and / or in the end anchoring areas of the tendon.
- the tension elements of the tendon are therefore either firmly connected to the structure after hardening of the filling compound or are at least in frictional engagement with the structure, so that the stretching of the tension elements and thus the tendon required for re-tensioning, if not prevented, is at least severely hampered .
- the invention is further based on the object of designing and developing a device for prestressing buildings of the type described above in such a way that the tendon and in particular also a tendon with bare tension elements can be easily retensioned even after the filling compound has hardened.
- the device according to the invention solves the above object by the features of claim 21. Thereafter, the above-mentioned device for prestressing structures is designed so that the molded part is optionally slidably mounted in a guide, so that the molded part together with the tensioning of the tendon Tendon can move relative to the structure.
- the re-tensioning of a tendon already filled with a hardening mass is favored by a relative movement between the tendon and the structure. Furthermore, it has been recognized that when the tendon is filled with a hardening mass, at least in tendons with bare tension elements, a relatively firm connection between the tendon and structure arises that cannot be overcome easily when the tendon is re-tensioned, ie not without damaging the tendon.
- a “desired sliding point” which is not arranged, for example, between the tendon and the structure, but between the molded part with which the tendon is in contact and which in itself is already attributable to the structure, and a guide for the molded part that is also attributable to the building
- a sliding layer can advantageously be provided between the molded part and its guide. This could be implemented, for example, in the form of a sliding film or a layer of grease.
- the molded part is optionally slidably mounted in the guide. Accordingly, it is advantageous if easily operable means are provided for optionally fixing the molded part in the guide. These could be implemented in the form of a stop element which can be mounted on the guide and which could optionally be screwed to the guide. Such a stop element could then not only be simply assembled but also simply removed, namely in particular for retensioning the tendon. In contrast, during the assembly of the tendon and during tensioning of the tension elements before filling the cladding tube, the molded part can be fixed in its guide, since the tension elements can still be moved within the cladding tube.
- a layer is formed between the cladding tube of the tensioning member and the shaped part, which enables a constraint-free expansion of the cladding tube relative to the shaped part.
- a layer could be formed from a material with a viscous material behavior, for example from neoprene.
- such a layer could be realized in the form of a brush bearing or also in the form of a carrier layer in which small rollers or balls are embedded.
- the possibility of realizing such a layer in the form of a loose sand mass should also be mentioned.
- the invention also relates to a device for prestressing structures with at least one tendon, the tendon comprising at least one tension element and a common cladding tube for all tension elements of the tendon, and at least one bearing device arranged on the structure for the tendon, at least the tension elements of the tendon are guided out of the cladding tube through the storage device.
- This device should also be designed so that the tendon and in particular a tendon with bare tension elements can be easily re-tensioned.
- This permanently plastic mass enables the tensile elements to expand in the correspondingly embedded areas even after the cladding tube has been filled with a space-filling mass and this mass has hardened.
- the tension elements are guided through a compensating chamber which is formed in the transition area between the cladding tube and the bearing device and can be filled with permanently plastic mass.
- the relative position of the two end walls of the compensating chamber can be changed by tensioning the tension elements, in particular also when re-tensioning the tendon.
- Fig. 1 shows a longitudinal section through an inventive tendon guided over a deflection point
- Fig. 2 shows a cross section through the tendon shown in Fig. 1.
- 3 and 4 each show a cross section through a spacer.
- Fig. 5 shows a longitudinal section through a further tendon according to the invention in a schematic representation.
- Fig. 6 shows a longitudinal section through a further tendon according to the invention
- Fig. 7 shows a cross section through the tendon shown in Fig. 6.
- Fig. 8 also shows a longitudinal section through a section of a further tendon according to the invention.
- FIG. 9 shows a longitudinal section through a device according to the invention for prestressing buildings in the region of a deflection point
- FIG. 10 shows a cross section through the device shown in FIG. 9.
- 11 to 13 each show a cross-sectional view through various devices according to the invention for prestressing buildings.
- FIG. 14 shows a longitudinal section through the end anchoring area of a tendon with a device according to the invention.
- FIG. 15 shows a longitudinal section through the end anchoring area of a tendon with a further device according to the invention for prestressing buildings.
- 16 and 17 show variants of this further device according to the invention for prestressing buildings in longitudinal section.
- Fig. 1 the deflection area 1 of a building is shown, over which a tendon 4 is guided.
- the tendon 4 comprises tension elements 5, which are arranged in a common cladding tube 3.
- a molded part 2 assigned to the building, which can be made, for example, of concrete, fiber-reinforced concrete, metal or plastic.
- the contact surface 6 of the molded part 2 to the cladding tube 3 is designed as a guide for the cladding tube 3 in the longitudinal and transverse directions in order to avoid the occurrence of harmful kinks in the cladding tube 3 and the tension elements 5 of the tension member 4 in the deflection area 1.
- the contact surface 6 has an approximately semicircular contour in cross section, which is illustrated by FIG. 2. In longitudinal section, the contact surface 6 is continuously curved. The end regions 7 of the contact surface 6 are longer than theoretically required for the planned guidance of the cladding tube 3. In this way, positional tolerances from unplanned angular rotations of the tendon 4 relative to its planned position can be absorbed by the end regions 7 without the cladding tube 3 being damaged as it runs over the end edges 8 of the molded part 2.
- Spacers 9 are arranged within the cladding tube 3, which have an approximately circular cross-section.
- the bundle of pulling elements 5, which are supported on the inner surface 10 of the spacers 9, is guided through the spacers 9.
- a spacer 11 is arranged between each two spacers 9.
- the spacer elements 11 also have an approximately circular cross section and ensure that a predetermined distance between the spacers 9 is maintained.
- the spacers 9 and the spacer elements 11 are introduced into the cladding tubes 3 before the pulling elements 5 are introduced into the cladding tube 3.
- the length of the spacers 9 and the spacer elements 11 is so short that it prevents the cladding tube 3 from bending, e.g. in the deflection area 2, do not oppose any appreciable resistance.
- the spacers 9 and the spacers 11 can therefore e.g. even before the cladding tube is placed in the building, e.g. in the tendon, are inserted into the cladding tube, and the cladding tube can then be rolled up and transported to the construction site, since the bending stiffness of the cladding tube is not significantly impaired.
- the short length of the spacers 9 also has the advantage that the deflection angle between the individual spacers 9 in the deflection area 1 is so small that the resulting course of the tension elements 5 is only slightly bent and therefore not harmful.
- 3 shows how kinking of the tension elements 5 can additionally be avoided by means of a spherically shaped inner surface 13 of the spacers 9, which is particularly important in the case of tension elements sensitive to lateral pressure, such as those made of glass fiber composite elements.
- Fig. 4 shows another spacer 9, in which only the end regions 12a of the inner surface 12 are rounded.
- the shapes of the inner surfaces of the spacers 9 shown in FIGS. 3 and 4 also prevent the tension elements 5 of the tendon 4 from striking the end faces 12b of the spacers 9 when introduced into the cladding tube 3, which would impede the insertion of the tension elements 5.
- the remaining cavity 14 in the cladding tube 3 can be filled with a space-filling mass 15 after tensioning the tension elements 5, which ensures that no substances that may damage the tension elements 5 can penetrate to the tension elements 5.
- a hardening mass is used, which in the case of corrosion-sensitive steel tensile elements e.g. consists of corrosion-protecting cement mortar.
- Fig. 5 shows that and how the spacers 9 can be arranged in the cladding tube 3 without intermediate spacers.
- the close arrangement of the spacers 9 is only required in the deflection area 1 in order to be able to absorb the deflection forces resulting from the tensioned deflection forces as evenly as possible and to be able to remove them via the cladding tube 3 and the molded part 2 into the deflection area 1 of the structure.
- the spacers 9 can be arranged at greater distances.
- Fig. 6 shows how a longer spacer 18 ensures that two spacers 9 are held at a greater distance from each other.
- a thin-walled tube serves as a spacer element 18.
- a flexible spacer element 18 can be used to improve the flexibility, the flexibility of which can be achieved by a corrugated and / or perforated or slotted design of the tube wall can still be improved.
- spacer elements 11 and 18 prevent the mutual approach of spacers 9 by pressure contact between the spacer element 11 or 18 and the adjacent spacer 9.
- the spacer elements 11 and 18 do not have to be connected to the spacers 9.
- spacer elements 11 and 18 as tension-transmitting elements connected to the spacers 9, so that a chain of spacer elements 11 and 18 and spacers 9 is formed.
- the spacers 9 can be brought into position and held in that this chain is tensioned, individual spacers or spacer elements having to be held relative to the cladding tube 3 or the end anchorage of the tendon 4, e.g. by a screw 17.
- the spacers are only to be arranged in a limited area, e.g. 1, the sliding of these spacers out of this area can also be prevented by attaching one or more spacers in this area to the cladding tube, e.g. with a screw.
- FIG. 8 shows another possibility for preventing the spacers 9 from slipping out of a predetermined area:
- the spacers 9 are located in a cladding tube 3 to which a cladding tube 3a with a smaller diameter is attached. Because of this smaller diameter, the spacers 9 cannot slip out of the cladding tube 3 into the cladding tube 3a.
- tendons in particular external tendons with bare tension elements, should be retensionable. If the cladding tubes of such tendons are filled with hardened mass after the first prestressing and in this way there is a bond between the tension elements and the cladding tube, this retensioning is not readily possible.
- the cladding tube is then in contact with the structure, in particular in the deflection areas, but often also in the end anchoring areas, and the tendon there is either firmly connected to the structure after hardening of the filling compound or is at least in frictional engagement with it, so that the Tensioning required expansion of the tension elements and thus the tendon overall is either prevented or at least hindered.
- the tendon If the tendon is not firmly connected to the structure in the anchoring areas and runs straight between the two end anchors, without a deflection point, the tendon can be freely stretched during re-tensioning even after the filling compound has hardened.
- the hardened mass is stretched by the same amount as the tension elements.
- this expansion is accompanied by the cement mortar being torn open, and in many cases the crack width is so small that there is no risk of corrosion for tensile elements made of steel.
- there is a deflection point free, uniform expansion in the area of the deflection point is not possible.
- Figures 9 and 10 show a deflection area 1 in longitudinal section or cross section.
- the tension elements 5 which are held by the spacers 9 at a distance from the inner wall 16 of the cladding tube 3.
- the hollow Room 14 was filled with hardening compound 15 after the prestressing.
- the cladding tube 3 lies in the deflection molded part 19, which has an approximately semicircular cross section and which is guided through a component 20 with a correspondingly shaped surface 21.
- the component 20 thus forms a guide for the deflection molded part 19.
- a sliding layer 22 is arranged, which can consist, for example, of a sliding film or a layer of grease.
- the sliding of the deflection molding 19 on the component 20 can be prevented by fastening the deflection molding 19 on the component 20, for example with the aid of a stop element 26 which is fastened to the component 20 with the aid of a screw 27.
- the deflection molded part 19 now slides on the component 20 in the direction of the tension anchor, not shown here, namely in the direction of arrow 28.
- the tension elements 5 stretch not only in the area between tension anchor and deflection area 1, but also between this deflection area 1 and the fixed anchor of the tendon 4, whereby the cladding tube 3 and the mass 15 expand, possibly with crack formation in the hardened mass 15. In this way, the force applied during retensioning is effective over the entire tendon length.
- a layer 23 can additionally be arranged, which is designed such that the cladding tube 3 can stretch practically without constraint relative to the rigid deflection molding 19, without any sliding between this layer 23 and the cladding tube 3 on the one hand and the deflection molding 19 must occur on the other hand.
- a layer 23 can consist, for example, of neoprene or another material with a viscous material behavior.
- the layer 23 can also be designed as a kind of brush bearing, the "brush hairs" ablating the deflection forces between the cladding tube 3 and the deflection molded part 19, but they do not hinder the expansion of the cladding tube that occurs during re-tensioning, since they can bend transversely to their brush axis
- the same function can be performed by a layer 23, which consists of small rolls or balls, these balls or rolls can also be embedded in a possibly soft mass or other carrier layer, and a loose sand mass can also fulfill the function of the largely constraint-free mounting of the cladding tube .
- FIGS. 11 to 13 show examples of deflecting molded parts 19 with an outer contour that is not round in cross section.
- the cladding tube has a round cross section and in FIG. 13 a rectangular cross section.
- the 14 shows the region 34 of the end anchorage of a tendon 4, the cavity 14 of which is filled with hardening mass 15.
- the tension elements 5 of the tendon 4 are anchored to a perforated disk 30 in a known manner with the aid of fastening elements 29, wedges are shown.
- the perforated disc 30 is connected to the cladding tube 3 via a tubular transition piece 32.
- the transition piece 32 is fastened in the case shown here with the aid of screws 33 to the perforated disk 30 and with the help of screws 35 on the cladding tube 3.
- the perforated disk 30 is supported on the anchor plate 31 via a flange 39 of the transition piece 32.
- a pipe socket 36 is welded, which produces the transition to the recess pipe 37 concreted in the anchoring area 34.
- a tensioning press is connected to the perforated disk 30 via an external thread 41 of the perforated disk 30.
- the perforated disc 30 is lifted off the anchor plate 31, the tension elements 5 being stretched.
- the width of the gap 38 which opens during re-tensioning between the flange 39 of the transition piece 32 and the anchor plate 30 corresponds to that of Retensioning applied tendon extension.
- This gap 38 is bridged by inserted, usually semi-tubular washers. Since FIG. 14 shows the anchoring area before retensioning, these washers are not shown here.
- the tensioning member 4 is therefore formed at a short distance behind the perforated disk like a deflection point described in FIGS. 1 and 9 with inner spacers 9 and spacer elements 11.
- the Umienkformteil 19 receives the cladding tube 3.
- the deflection molded part 19 is fastened to the anchoring region 34 of the structure with the aid of a stop part 26 fastened to it and the screw 27. After the stop part 26 has been released, the tendon can move together with its cladding tube 3 and the deflection shaped part 19 in the direction of the tension anchorage.
- the tension elements 5 run within the anchoring area 34 in each case within a transition tube 42.
- the transition tubes have an external thread 43 at one end, with which they are screwed into an associated threaded hole in an intermediate plate 44.
- the transition tubes 42 are each firmly inserted into an associated bore 46 in a sealing washer 45.
- the bore has a narrow area 47, which tightly surrounds the tension element 5 that is carried out.
- a second sealing disk 48 with narrow bores 49 is arranged at a distance from this sealing disk 45, the clear distance between the two sealing disks 45 and 48 corresponding at least to the intended tensioning path.
- the space 54 between the two sealing disks 45 and 48 forms a compensation chamber.
- the sealing disk 45 is connected to a transition cladding tube 50, which is arranged within the penetration 52 of the anchoring region 34 formed by a recess tube 51. If the axis of the anchoring region deviates from the tendon axis, the transition cladding tube 50 can rest against the trumpet-like rounded end widening 51a of the recess tube 51 without the tendon extending over an edge. After prestressing, the penetration 52 is sealed off from the transition cladding tube 50, for example by means of a shrink sleeve 53.
- the annular space 59 between each tension element 5 and its associated transition tube 42 is filled with permanently plastic mass, at least if the tension elements are to be protected against corrosion in this way.
- the cavity 54 between the two sealing plates 45 and 48 is also filled with permanently plastic mass 65, this mass being introduced through the filling opening 58 until it emerges from the ventilation opening 57. Both openings 58 and 57 are then closed with plugs 58a and 57a.
- the cavity 66 inside the cladding tube 3 and the cavity 52 of the penetration are filled with hardening mass, preferably with cement mortar, which ensures corrosion protection in the case of tension elements 5 which are at risk of corrosion.
- the cavity 52 of the penetration has an injection opening 60 and ventilation openings 29 and 67 in the high points.
- the cement mortar flows through the holes 63 located in the wall of the transition casing 50, so that the cavity 64 arranged on the outside around the transition casing 50 is also filled.
- the tensioning press is attached to the ends 5a of the tension elements 5 protruding from the perforated disk 30 in order to apply the tensioning stretch to the tension elements.
- the tension elements 5 slide in the transition tube rake 42 of the anchoring area.
- the hardened cement mortar filling of the cavity 66 is connected via bond forces to the areas 5a of the tension elements 5 therein and is retightened together with the tension elements 5a, the cladding tube 3 and the sealing disk 48 in the direction of the sealing disk 45, the cavity 54, ie the compensation chamber, reduced in size and the overflow tube 55 slides on the cladding tube 3.
- the excess permanent plastic mass located in the cavity 54 is displaced out of the previously opened opening 57.
- the space between the two sealing disks 45 and 48 is not closed with a sliding tube which is at least slidably mounted on one side, but with a bellows element 70, which is also capable of a relative movement to allow between the two sealing washers 45 and 48.
- the tension elements are guided outside the cladding tube individually in telescopically inserted transition tubes 71 and 72, which can be filled with a permanently plastic mass, but also form a protection for the tension elements 5 already unfilled.
- the telescopic arrangement of the transition tubes 71 and 72 allows the tension elements 5 to be stretched when the tendon is re-tensioned.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998158001 DE19858001A1 (de) | 1998-12-16 | 1998-12-16 | Externes Spannglied |
DE19858001 | 1998-12-16 | ||
PCT/DE1999/003998 WO2000036222A1 (de) | 1998-12-16 | 1999-12-15 | Externes spannglied |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1141488A1 true EP1141488A1 (de) | 2001-10-10 |
Family
ID=7891262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99966874A Withdrawn EP1141488A1 (de) | 1998-12-16 | 1999-12-15 | Externes spannglied |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1141488A1 (de) |
DE (1) | DE19858001A1 (de) |
WO (1) | WO2000036222A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT412221B (de) * | 2001-03-06 | 2004-11-25 | Vorspann Technik Ges M B H & C | Bauwerk mit wandungen mit im wesentlichen verbundfrei angeordneten spanngliedern |
US7987638B1 (en) | 2007-02-07 | 2011-08-02 | Lee Fang | Post-tensioning retrofit assemblies for reinforcing structural members |
WO2012079625A1 (de) * | 2010-12-15 | 2012-06-21 | Bbr Vt International Ltd. | Vorrichtung zum verankern einer mehrzahl von seilsträngen eines seilbündels |
DK2935719T3 (da) | 2012-12-18 | 2017-11-20 | Wobben Properties Gmbh | Anker, spændeindretning, vindenergianlæg og fremgangsmåde til trækspænding af trækstrenge på et anker |
CN104018433B (zh) * | 2014-05-23 | 2016-04-27 | 中交隧道工程局有限公司 | 一种桥梁体外预应力钢索转向靴-外套管转向器 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH629266A5 (de) * | 1977-12-21 | 1982-04-15 | Bureau Bbr Ltd | Kabel mit kabelhuelle. |
FR2511721A1 (fr) * | 1981-08-21 | 1983-02-25 | Freyssinet Int Stup | Dispositif de raccordement incurve entre deux portions rectilignes d'un cable tendu |
JPS60154405U (ja) * | 1984-03-26 | 1985-10-15 | 株式会社 春本鉄工所 | 橋梁ケ−ブルの外装材 |
FR2567946B1 (fr) * | 1984-07-20 | 1986-12-26 | Freyssinet Int Stup | Perfectionnements aux procedes et dispositifs pour cintrer localement les armatures de precontrainte |
DE8504451U1 (de) * | 1985-02-16 | 1987-02-26 | Thyssen Industrie Ag, 4300 Essen, De | |
DE3529001A1 (de) * | 1985-08-13 | 1987-02-26 | Dyckerhoff & Widmann Ag | Verfahren zum einbau einer wendel aus stahldraht in einen rohrfoermigen hohlraum, wie z.b. einen spannkanal |
DE3629704C1 (en) * | 1985-09-02 | 1988-01-14 | Wolfgang Dipl-Ing Borelly | Corrosion protection for a tension member formed from steel ropes, parallel wire bundles or parallel strand bundles |
FR2594194B1 (fr) * | 1986-02-13 | 1990-03-23 | Sogelerg | Tube de transition pour cable, notamment pour hauban de pont |
DE3734953C2 (de) * | 1987-03-13 | 1994-02-24 | Dyckerhoff & Widmann Ag | Abstandhalter für ein spannbares Zugglied |
DE3832376A1 (de) * | 1988-09-23 | 1990-04-05 | Hochtief Ag Hoch Tiefbauten | Abstandshalter fuer ein spannbares zugglied |
FR2662725A1 (fr) * | 1990-05-31 | 1991-12-06 | Dyckerhoff & Widmann Ag | Procede de fabrication d'un membre tendu compose d'un faisceau d'elements. |
DE29500560U1 (de) * | 1995-01-14 | 1996-05-15 | Dyckerhoff & Widmann Ag | Korrosionsgeschütztes freies Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund |
-
1998
- 1998-12-16 DE DE1998158001 patent/DE19858001A1/de not_active Withdrawn
-
1999
- 1999-12-15 WO PCT/DE1999/003998 patent/WO2000036222A1/de not_active Application Discontinuation
- 1999-12-15 EP EP99966874A patent/EP1141488A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO0036222A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19858001A1 (de) | 2000-06-21 |
WO2000036222A1 (de) | 2000-06-22 |
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