DE2735379C2 - Process for the production of prestressed concrete bridges - Google Patents
Process for the production of prestressed concrete bridgesInfo
- Publication number
- DE2735379C2 DE2735379C2 DE19772735379 DE2735379A DE2735379C2 DE 2735379 C2 DE2735379 C2 DE 2735379C2 DE 19772735379 DE19772735379 DE 19772735379 DE 2735379 A DE2735379 A DE 2735379A DE 2735379 C2 DE2735379 C2 DE 2735379C2
- Authority
- DE
- Germany
- Prior art keywords
- cross
- superstructure
- reinforcements
- bridge
- sectional
- 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.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Description
statischen Erfordernissen ausgebildet werden können.static requirements can be trained.
Für den Einschiebevorgang sind Hilfsstützen erforderlich. Nach Herstellung der schubfesten Verbindung zwischen den Querschnittsverstärkungen und dem eingeschobenen Überbau können, wie beim Taktsdiiebeverfahren üblich, die Restvorspannung aufgebracht und die Hilfsstützen entfernt werden.Auxiliary supports are required for the insertion process. After establishing the shear-resistant connection between the cross-sectional reinforcements and the inserted Superstructure can, as in the case of the clock thieving method It is customary to apply the residual prestress and remove the auxiliary supports.
Die Querschnittsverstärkungen können einen Trogquerschnitt haben, so daß der Oberbau durch- sie hindurchgeschoben werden kann. Es ist auch ohne weiteres to möglich, nur die Verstärkung der Bodenplatte eines Kastenquerschnittes an Oit und Stelle zu fertigen und die Stegverstärkungen in der stationären Fertigungsanlage zu betonieren und mit dem Oberbau einzuschieben.The cross-sectional reinforcements can have a trough cross-section so that the superstructure pushed through them can be. It is also easily possible to just reinforce the base plate of a box cross-section to manufacture on the spot and the web reinforcements in the stationary manufacturing plant to be concreted and pushed in with the superstructure.
Die Querschnittsverstärkungen können auf einem Lehrgerüst, im Freivorbau ode? in Fertigteilbauweise hergestellt werden. Es ist auch möglich, die Querschnittsverstärkungen in einer um die vertikale Achse verdrehten Lage beispielsweise in Richtung von Uferlinien oder Gleisachsen zu fertigen und anschließend in die Brückenachse einzuschwenken.The cross-sectional reinforcements can be on a falsework, cantilevered or? in precast construction getting produced. It is also possible to use the cross-sectional reinforcements in a position rotated about the vertical axis, for example in the direction of bank lines or to manufacture track axes and then swivel them into the bridge axis.
Bei großen Pfeilerhöhen ist es vorteilhaft, die Querschnittsverstärkungen auf Geländehöhe herzustellen und nach Beendigung des Einschiebevorganges durch Hebezeuge emporzuheben, die beispielsweise am Oberbau befestigt sind.In the case of large pillar heights, it is advantageous to use the cross-sectional reinforcements at ground level and after the end of the pushing-in process to be lifted up using lifting equipment, for example on the superstructure are attached.
Der Oberbau ist im Verschiebezustand auf den endgültigen Brückenpfeilern und auf Hilfspfeilern aufgelagert, kann aber auch im Bereich der Querschnittsverstärkungen provisorisch aufgelagert sein. Erforderlichenfalls werden diese Verstärkungen hierfür durch weitere Hilfspfeiler unterstützt oder mit einer provisorischen Oberspannung versehen. Wird eine provisorische Oberspannung gewählt, so wird beispielsweise bei Hohlkastenquerschnitten mit auskragender Fahrbahnplatte zuerst der Kastenquerschnitt eingeschoben und die Kragarme werden nach Erreichen der Endlage ergänzt. In the shifted state, the superstructure is supported on the final bridge piers and on auxiliary piers, but can also be temporarily supported in the area of the cross-sectional reinforcements. If necessary these reinforcements are supported by additional auxiliary pillars or with a provisional one Provided upper tension. If a provisional maximum stress is selected, for example at Box cross-sections with cantilevered carriageway slab first inserted the box cross-section and the cantilever arms are added after reaching the end position.
Ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens wire im folgenden anhand der Zeichnungen näher erläutert. Es zeigtAn exemplary embodiment of the method according to the invention is described in greater detail below with reference to the drawings explained. It shows
F i g. 1 eine Spannbetonbrücke nach Einschieben des Überbaus,F i g. 1 a prestressed concrete bridge after the superstructure has been pushed in,
F i g. 2 den Endzustand der Brücke nach F i g. 1,
F i g. 3 einen Schnitt längs der Linie III-III in F i g. 2,
F i g. 4 einen Schnitt längs der Linie IV-IV in F i g. 3.
In F i g. 1 ist eine Brücke mit Überbau 1 dargestellt, der im Taktschiebeverfahren mit konstanter Querschnittshöhe
gefertigt und über Pfeiler und Hilfsstützen 4 eingeschoben wurde. 2ur Aufnahme der Biegemomente
im Endzustand sind die Querschnittsverstärkungen 2 im S'iützenbereich der großen Öffnung vorgesehen.
Wegen der großen Pfeilerhöhe werden die Querschnittsverstärkungen auf dem Gelände betoniert und
nach Beendigung des Einschiebevorganges mit Hebezeugen 3 in die Endlage emporgehoben (F i g. 2). Nachdem
eine schubfeste Verbindung der Querschnittsverstärkungen mit dem eingeschobenen Überbau hergestellt
ist, können die Restvorspannung aufgebracht und die Hilfsstützen wie üblich entfernt werden.F i g. 2 shows the final state of the bridge according to FIG. 1,
F i g. 3 shows a section along the line III-III in FIG. 2, fig. 4 shows a section along the line IV-IV in FIG. 3. In Fig. 1 shows a bridge with a superstructure 1, which was manufactured using the incremental launching method with a constant cross-sectional height and pushed in over piers and auxiliary supports 4. In order to absorb the bending moments in the final state, the cross-sectional reinforcements 2 are provided in the support area of the large opening. Because of the great height of the piers, the cross-sectional reinforcements are concreted on the site and, after the end of the pushing-in process, are lifted into the end position with lifting gear 3 (FIG. 2). After a shear-proof connection between the cross-sectional reinforcements and the inserted superstructure has been established, the residual prestress can be applied and the auxiliary supports removed as usual.
Wie F i g. 3 zeigt, sind die Querschnittsverstärkungen als Kragarme 2 mit trogförmigem Querschnitt ausgebildet. Der eingeschobene Überbau 1 ist mit dem Kragarm 2 schubfest verbunden. Diese Schubverbindung kann beispielsweise durch bewehrte Betonplomben 5 und/ oder durch Verdübelungen 6 im Stegbereich (F i g. 4) hergestellt werden. Zwischen dem eingeschobenen Überbau 1 und dem Kragarm 2 ist eine Fuge 7 vorhanden, die vollflächig verpreßt werden kann. Im Stegbereich kann die Fuge mittels Spanngliedern 8 vorgespannt werden.Like F i g. 3 shows, the cross-sectional reinforcements are designed as cantilever arms 2 with a trough-shaped cross-section. The pushed-in superstructure 1 is connected to the cantilever arm 2 in a shear-proof manner. This push connection can for example by reinforced concrete seals 5 and / or by dowels 6 in the web area (Fig. 4) getting produced. There is a joint 7 between the inserted superstructure 1 and the cantilever arm 2, which can be pressed over the entire surface. In the web area, the joint can be prestressed by means of tendons 8 will.
Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings
Claims (14)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772735379 DE2735379C2 (en) | 1977-08-05 | 1977-08-05 | Process for the production of prestressed concrete bridges |
AT515178A AT371868B (en) | 1977-08-05 | 1978-07-17 | METHOD FOR THE PRODUCTION OF prestressed concrete bridges |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772735379 DE2735379C2 (en) | 1977-08-05 | 1977-08-05 | Process for the production of prestressed concrete bridges |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2735379A1 DE2735379A1 (en) | 1979-02-15 |
DE2735379C2 true DE2735379C2 (en) | 1986-03-20 |
Family
ID=6015740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772735379 Expired DE2735379C2 (en) | 1977-08-05 | 1977-08-05 | Process for the production of prestressed concrete bridges |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT371868B (en) |
DE (1) | DE2735379C2 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1183929B (en) * | 1960-08-05 | 1964-12-23 | Polensky & Zoellner | Method for producing high valley bridges from reinforced concrete, especially prestressed concrete |
DE2321658C2 (en) * | 1973-04-28 | 1975-01-30 | Dyckerhoff & Widmann Ag, 8000 Muenchen | Device for rotating a superstructure part of a solid bridge designed as a double support arm |
-
1977
- 1977-08-05 DE DE19772735379 patent/DE2735379C2/en not_active Expired
-
1978
- 1978-07-17 AT AT515178A patent/AT371868B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE2735379A1 (en) | 1979-02-15 |
ATA515178A (en) | 1982-12-15 |
AT371868B (en) | 1983-08-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |