DE2142365B2 - Prestressed concrete girder reinforced by haunches at the supports and the process for making it - Google Patents
Prestressed concrete girder reinforced by haunches at the supports and the process for making itInfo
- Publication number
- DE2142365B2 DE2142365B2 DE19712142365 DE2142365A DE2142365B2 DE 2142365 B2 DE2142365 B2 DE 2142365B2 DE 19712142365 DE19712142365 DE 19712142365 DE 2142365 A DE2142365 A DE 2142365A DE 2142365 B2 DE2142365 B2 DE 2142365B2
- Authority
- DE
- Germany
- Prior art keywords
- prestressed concrete
- concrete
- girder
- tendon
- haunch
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
- E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
- Bridges Or Land Bridges (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
f Fig.2 den Spannbetonträger nach Fig.I nach befindlichen Spangtiedbttndel 1 und 2 durch derenf Fig.2 the prestressed concrete beam according to Fig.I after the Spangtiedbttndel 1 and 2 by their
ι der Spannung der SpanngüedbUndel, Ablenkung von der anfänglich geradlinigen Lage in ι the tension of the SpanngüedbUndel, deflection from the initially straight position in
a Fig.3 den Querschnitt längs der Linie/I-4 in Richtung der inneren, unteren Ecken der Vouten a Fig.3 shows the cross section along the line / I-4 in the direction of the inner, lower corners of the haunches
II. Fig.2, mittels ta den Zeichnungen nicht dargestellter, amFig.2, by means of the drawings not shown, on
II Fig.4 einen Längsschnitt durch eine Ablenkvor- 5 oberen Teil des Spannbetonträgers angeordneter i richtung fur die SpanngliedbUndel, Zahnstangenwinde vorgenommen, welche die I Fig.5 einen Querschnitt der Ablenkvorrichtung Dorne? nach oben verschieben, auf die sich die I nachFig.4, SpanngUedbündel 1 und 2 abstützen. Die Verschleiß Fig.6 einen Längsschnitt durch eine weitere Ab- bung der Dorne7 lenkt die SpanngUedbündel 1 und 1 lenkvorrichtung für die SpanngUedbündei, io 2 ab, die infolge ihrer Verankerung an den EndenI I Fig.4 made a longitudinal section through a deflection 5 upper part of the prestressed concrete girder arranged direction for the tendon bundles, rack and pinion winch, which the I Fig.5 a cross section of the deflection mandrels? Move upwards, on which the I according to Fig. 4, tension bundle 1 and 2 are supported. The wear Fig. 6 a longitudinal section through a further bend of the mandrels 7 deflects the tensioning bundle 1 and 1 steering device for the tensioning bundle, io 2, which as a result of its anchoring at the ends r r Fig.7 einen Querschnitt der Ablenkvorrichtung gespannt werden. Die Blockierung der Spanngüedj5 nach F i g. 6, bündel in dieser SteUung wird mit Muttern 6 bewerk- * Fig.8 in scheroatischer DarsteUumg einen Längs- stelligt, die Halter 8 auf den Schraubenbolzen5 fest-I schnitt durch era weiteres Ausführungsbeispiel eines ziehen und damit auch die Dorne 7 und die Spann-' Spannbetonträgers nach der Erfindung vor der 15 gliedbündell und 2 in der abgelenkten Stellung ; Spannung der SpanngUedbündel, blockieren.7 shows a cross section of the deflection device to be stretched. The blocking of the Spanngüedj5 according to F i g. 6, bundle in this control is done with nuts 6 - * Fig. 8 in a scheroatic representation a longitudinal position, the holder 8 on the screw bolt 5, I cut through what another embodiment of a pull and thus also the mandrels 7 and the clamping 'Prestressed concrete beam according to the invention in front of the 15 member bundle and 2 in the deflected position; Tension of the tension bundle, block.
: Fig. 9 den Spannbetonträger nach Fig. 8 nach Der Schutz der SpanngUedbündel erfolgt mit: Fig. 9 shows the prestressed concrete beam according to fig
; der Spannung der SpanngUedbündel und einem durch Torkretierung in einer oder zwei Lagen; the tension of the tension bundle and one by means of gate locking in one or two layers
Fig. 10 den Querschnitt längs der Linie B-B in aufgebrachten Mörtelschicht9.10 shows the cross section along the line BB in an applied mortar layer9.
F i g. 9. 20 Zur Herstellung eines durchlaufenden Spannbeton-F i g. 9. 20 For the production of a continuous prestressed concrete
Zur Herstellung eines frei aufliegenden Spannbe- trägers mit Vouten, wie er in aen F i g. 8 und 9 dar-For the production of a free-lying tension beam with haunches, as shown in aen F i g. 8 and 9 show
tonträgers gemäß der Erfindung werder unterhalb gestellt ist, wird wie im Falle dta frei aufliegendenSound carrier according to the invention who is placed below, is freely resting as in the case of dta
und außerhalb einer Schalung Spanngliedbündel 1 Trägers vorgegangen, wobei jedoch die Spannglied-and outside a formwork tendon bundle 1 girder proceeded, however, the tendon
und 2 mit geradlinigem Verlauf in einem anfänglich bündel 10, 11, 12 und 13 verschiedene Längen undand 2 with a straight course in an initially bundle 10, 11, 12 and 13 different lengths and
kräftefreien Zustand angeordnet, wobei die einen 25 Stellungen im Feld besitzen, je nach der Größe derarranged force-free state, with one having 25 positions in the field, depending on the size of the
Enden der SpanngUedbündel in dem oberen Teil der Kräfte auf den Stützen des Trägers und in dessenEnds of the SpanngUedbündel in the upper part of the forces on the supports of the beam and in its
Schalung verankert sind. Des weiteren wird eine Feldern.Formwork are anchored. Furthermore, a fields.
Montagebewehrung 3 in den unteren und oberen Teil Zur Ablenkung der SpanngUedbündel in Höhe derAssembly reinforcement 3 in the lower and upper part To deflect the tension bundle at the height of the
der Schalung eingesetzt. Vouten können die bei den frei aufliegenden Trägernthe formwork used. Haunches can be found on the free-lying girders
Gleichzeitig werden im Bildungsbereich der 30 verwendeten Mittel angewandt werden oder auchAt the same time in the field of education of the 30 funds used will be applied or also
Trägervouten Verankerungen 4 und Schraubenbol- Verankerungen 14, die die Dorne 7 festhalten undSupport cove anchors 4 and screw bolt anchors 14, which hold the mandrels 7 and
zen5 eingesetzt, wonach ein entsprechender Beton die nach Verschiebung der Dorne und mithin derzen5 used, according to which a corresponding concrete after the shifting of the mandrels and therefore the
eingegossen wird. Nach dem Erstarren des Betons SpanngUedbündel gebogen werden, wodurch sie dieis poured. After the concrete has solidified, tensioning bundles are bent, causing them the
wird eine Verspannung der außerhalb der Schalung Dorne in der verschobenen Stellung blockieren.will block a tension of the mandrels outside the formwork in the shifted position.
Hierzu 4 Blatt ZeichnungenFor this purpose 4 sheets of drawings
Claims (1)
Torkretierung aufgebrachte Mörtelschicht (9) an- Diese Aufgabe wird gemäß der Erfindung dadurd: geheftet sind. gelöst, daß die Ablenkeinrichtung aus einer in de ι 2. Verfahren zur Herstellung eines Spannbe- unteren, inneren Ecke zumindest einer Voute einbc tonträgers nach Anspruch 1, bei dem außerhalb 25 tonierten Verankerung gebildet ist, die einen ir der Trägerschalung angeordnete Spanngliedbün- Trägerquerrichtung angeordneten Dorn umfaßt, dei del zunächst schlaff verlegt werden, anschließend die mit ihren einon Enden im Beton der Voute ver der Spannbetonträger in der Schalung gegossen ankerten Spanngliedbündel in in Richtung auf dit und darauf nach Erhärtung des Betons die untere, innere Ecke der Voute eingerückter Stellung Spanngüedb'.indel in zur Trägerlängsrichtung 30 hält, und daß die Spanngliedbündel an der Unterseil.«. senkrechter Richtung abgelenkt und damit ge- des Spannbetonträgers durch eine mittels Torkretie spannt werden, dadurch gekennzeichnet, daß vor rung aufgebrachte Mörtelschicht angeheftet sind,
dem Betonieren in der Schalung im Bereich der Neben den durch die Lösung der Aufgabe erreichunteren, inneren Ecke zumindest einer Voute ten Vorteilen weist der Spannbetonträger zuden eine Verankerung angeordnet wird, daß die einen 35 noch den Vorteil auf, daß er in Feldmitte eine gerin-Enden der Spanngliedbündel in die Schalung im gere Höhe aufweist, da die Spanngliedbündel unmit Bereich der Voute eingelegt werden, daß nach telbar an der Unterseite des Spannbetonträgers ver-Gießen des Betons und Erhärten desselben die laufen. - Claims: Haunches serve to reinforce the prestressed concrete beam on the supports. The tension spring becomes 1. Prestressed concrete girder, which is reinforced on the supports after the concrete has hardened by pressing downwards by means of haunches and a bundle of tendons S is drawn and thus has the desired tension, which is applied outside the prestressed concrete girder. In order to arrange the tendons in a deflected position, the underside of which is held by a device, which is stretched between them and the pre-stressed concrete beam, the tendons are inserted into a vertical rod which bundles forces from a straight position to the longitudinal beam. The tendons are transferred to the concrete of the girder in the perpendicular direction . In these known Spannbetontri like is e> steers, characterized in that it is disadvantageous that the arrangement in front of k the deflection device from a in the lower, pressing and the insertion of support rods relatively inner corner of at least one haunch is concreting-consuming. In addition, the clamping members are, as it: is formed ith anchor (4,14) having a arranged in angeordnei f at a distance from the concrete of the beam support mandrel transverse direction (T) environmentally κ are, unprotected and the risk of mechanical gripping, which with their one ends in the concrete exposed to damage and corrosion, tendon bundles anchored (1, 2,10 to The invention is based on the object of a 13) in the direction of the lower , inner corner prestressed concrete girder of the type mentioned at the beginning se of the haunch holds the indented position, and that the train that it can be produced in a simple manner isi bundle of tendons (1, 2, 10 to 13) on the lower 20 and its tendons at the same time in the side as far as possible Prestressed concrete beams are arranged by means of a protected layer.
Torkretierung applied mortar layer (9). This object is dadurd according to the invention: are tacked. solved that the deflection device from a in de ι 2. method for producing a clamping lower, inner corner of at least one haunch einbc sound carrier according to claim 1, in which outside 25 toned anchoring is formed, which arranged a tendon beam arranged in the support formwork transverse direction Thorn comprises, dei del are initially laid slackly, then the tendon bundles anchored with their one ends in the concrete of the haunch ver the prestressed concrete girders cast in the formwork in the direction of dit and then after the concrete has hardened the lower, inner corner of the haunch indented position Spanngüedb Holds the spindle in the longitudinal direction of the girder 30, and that the tendon bundles are attached to the lower rope. deflected in the vertical direction and thus the prestressed concrete girder can be tensioned by means of a Torkretie, characterized in that the mortar layer applied prior to the laying is attached,
concreting in the formwork in the area of the addition of the inner corner of at least one haunch th advantages achieved by the solution of the task, the prestressed concrete girder has an anchorage that the one 35 still has the advantage that it has a narrow end in the middle of the field the tendon bundle has in the formwork in the more height, since the tendon bundles are inserted in the immediate area of the haunch that ver-pouring of the concrete and hardening of the same run after telbar on the underside of the prestressed concrete beam.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712142365 DE2142365C3 (en) | 1971-08-24 | 1971-08-24 | Prestressed concrete girder reinforced by haunches at the supports and the process for making it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712142365 DE2142365C3 (en) | 1971-08-24 | 1971-08-24 | Prestressed concrete girder reinforced by haunches at the supports and the process for making it |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2142365A1 DE2142365A1 (en) | 1973-03-08 |
DE2142365B2 true DE2142365B2 (en) | 1974-08-29 |
DE2142365C3 DE2142365C3 (en) | 1975-04-24 |
Family
ID=5817634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712142365 Expired DE2142365C3 (en) | 1971-08-24 | 1971-08-24 | Prestressed concrete girder reinforced by haunches at the supports and the process for making it |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2142365C3 (en) |
-
1971
- 1971-08-24 DE DE19712142365 patent/DE2142365C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2142365C3 (en) | 1975-04-24 |
DE2142365A1 (en) | 1973-03-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) |