EP1869264A1 - Fachwerk-trägerrost-system - Google Patents
Fachwerk-trägerrost-systemInfo
- Publication number
- EP1869264A1 EP1869264A1 EP06743294A EP06743294A EP1869264A1 EP 1869264 A1 EP1869264 A1 EP 1869264A1 EP 06743294 A EP06743294 A EP 06743294A EP 06743294 A EP06743294 A EP 06743294A EP 1869264 A1 EP1869264 A1 EP 1869264A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- truss
- elements
- girder system
- truss girder
- node
- 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
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/22—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material with parts being prestressed
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/14—Load-carrying floor structures formed substantially of prefabricated units with beams or girders laid in two directions
Definitions
- the present invention relates to a truss girder grating system with individual truss elements made of concrete, with an upper chord and a lower chord and with diagonals as oblique compression and / or tension rods or with a disc between the upper and lower chord, the truss elements being spatially in Form of a support grid are arranged together.
- Truss girder systems according to the invention are used as roofs or ceiling systems, often also in combination with suitable ceiling panels.
- the individual truss elements are manufactured separately and then firmly connected to each other.
- the connection is often made by means of complicated node pieces, which create a firm connection between the individual truss elements.
- Additional tensioning ropes are often also used, which are guided over supports and thereby hold the individual truss elements or relieve the knot pieces.
- the disadvantage here is a very costly design of the node pieces and an additional space requirement for hanging the individual truss elements.
- the achievable spans are also relatively small, so that a variety of supports or suspensions are required to hold the girder system.
- the task is therefore to create a truss girder grating system which is composed of several truss elements and is very easy to manufacture and assemble.
- the object is achieved with a truss girder system with the features of claim 1.
- At least one prestressing element is arranged in the upper and lower chord of the truss elements.
- the prestressing elements run through at least two truss elements and are prestressed in such a way that thrust forces occurring between the truss elements can be transmitted by overpressing the joint between the truss elements (1).
- the truss elements can hereby be supported at their ends without moving at their contact surfaces or the system sagging inadmissibly. In this way, many individual truss elements can be connected to one another without the need for support posts or suspensions at each connection point.
- the individual parts made of concrete are strung together and clamped together by means of a pre-tension.
- Subsequent pretensioning of the upper and lower chords in both directions ensures the load-bearing capacity of the spatial system.
- the degree of prestress is chosen so high that the shear forces can be transmitted in the overpressed joints. Due to the resulting spatial load-bearing capacity, there is also the option of retrofitting the supports of the support system.
- the supports can be arranged in particular at the nodes of the support grate.
- the truss elements are arranged linearly one after the other or branched in the nodes. Two, three or four truss elements meet at the nodes. With a speaking design of the knots and guidance of the prestressing elements, it is also possible to have several truss elements abut.
- the dimensioning of the individual cross-sections and component dimensions is to be determined by means of a specially designed statics so that all occurring forces and load conditions are transferred.
- the individual elements are made of concrete, for example according to DIN 1045-1 - DIN 1045-4.
- At least two individual truss elements meet directly.
- a node piece is arranged between the truss elements.
- truss elements abut one another linearly without branching, it is usually sufficient if these truss elements abut one another directly, that is to say without the interposition of a further component.
- the truss elements may be sufficient for the truss elements to abut and form a node without the interposition of a node piece, on which further truss elements branch off, for example at a 90 ° angle from the first truss elements.
- the truss elements are to consist of identical parts as far as possible, it is advantageous if separate node pieces are arranged between the individual truss elements.
- the knot pieces allow the truss elements to branch off to form a support grate.
- the node piece offers a contact surface for each truss element to be arranged and thus enables the individual truss elements to be arranged in a defined manner by interposing the node piece.
- knot pieces for corners of the girder grate with two arranged truss elements, knot pieces for edge be rich with contact areas for three truss elements and node pieces for inner areas with contact areas for four or each for more truss elements.
- the prestressing elements run through at least one node piece.
- the pressing of the adjoining truss elements to the node piece can thus be carried out very effectively by subsequently tensioning the prestressing elements.
- care must be taken that the respective prestressing elements are guided past one another without obstructing one another.
- tensioning devices are provided at the ends of the carrier grate or at node pieces which are arranged on the edge of the truss-carrier grating system. These tensioning devices can fix the prestressed prestressing element with wedges, for example.
- Steel cables or threaded steels, which are arranged through the upper and lower chord of the aligned truss elements, are particularly suitable as pretensioning elements.
- prestressing elements made of carbon fiber or other materials can also be used advantageously.
- cladding tubes or recesses are arranged in the upper and lower chord of the truss elements.
- the prestressing elements are guided through these cladding tubes or cutouts and enable the individual truss elements to be pressed together, possibly with node pieces arranged in between.
- each node piece is advantageously designed as support posts or by a support post. supported. With an appropriate design of the system, however, it is not necessary that each node piece is also a support. Depending on the prestressing and design of the truss elements and node pieces, large spans can be bridged without support posts.
- the absorption of the shear forces in the joints is particularly reliably possible.
- the preload can be less than if no profiling is provided.
- the profiling is advantageously made very precisely and has positive and negative form elements which interlock and thus form a kind of toothing.
- a joint with local grouting with mortar or adhesive is arranged in the contact surfaces between the truss elements and node pieces or support posts.
- an additional positive connection is created, which can transmit the shear forces. If profiles are already provided on the contact surfaces prior to the local encapsulation, this creates an even better connection.
- the truss element has edge posts at its ends, this creates a very stable truss element which forms a defined contact surface and thus creates a firm and stable connection of the individual truss elements directly or indirectly with the interposition of knot pieces.
- a truss element advantageously consists of an upper chord, lower chord, edge post and the diagonals.
- the diagonals of a half-timbered elements can be arranged variably. This means that the diagonals can be arranged as oblique pull and push diagonals, as push diagonals with vertical pull posts or as pull diagonals with vertical push posts. Depending on the area of application and the required load-bearing capacity, the respective training courses can prove to be advantageous.
- a disc can also be arranged between the upper and lower chord.
- the truss support grid system has fewer contact surfaces which have to be connected to one another by means of the prestressing elements. As a result, the system can be made even more stable, but this requires more special truss elements in order to form a modular system with which almost any support grating can be put together.
- the dead weight must be kept particularly low, so that the length to be bridged can be made longer than when using a conventional concrete. Further advantages of the invention are described in the following exemplary embodiments. It shows
- FIG. 1 shows a detail of a truss girder grating system in a perspective view
- FIG. 2 shows a truss element
- Figure 4 shows a profiled end face of a truss element.
- FIG. 1 shows a perspective top view of a section of a truss girder grating system which is composed of a large number of individual truss elements 1.
- the individual truss elements 1 are connected to one another by means of node pieces 2.
- Supports 10 are provided at large intervals, which are arranged below a node piece 2 or have an appropriate node piece 2 integrated.
- the supports 10 are arranged at large intervals, i.e. Only after every fifth truss element 1 does a column 10 follow again.
- the large spans of the truss girder grating system are to be brought about by the prestressing which runs in the upper chord and lower material of the respective truss elements 1.
- the truss girder grating system can also be suspended from a support system (not shown) arranged higher.
- FIG. 2 shows a perspective view of an individual truss element 1.
- the truss element 1 consists of an upper chord 3 and a lower chord 4 as well as two edge posts 5 and several diagonals 6.
- the prestressing elements 7 and 8 run in a line through the aligned truss elements 1 of the truss girder system according to FIG 1 pressed together or pressed against the node pieces 2. This creates a stable girder grid system that can be stretched over extremely large spans by overpressing the thrust forces that occur.
- the diagonals 6 are shown here by way of example as oblique push and pull diagonals. But they can also be designed so that they work together in a known manner as pull or push diagonals in connection with vertical pull or push posts.
- FIG. 3 shows a detail from a node point in a perspective view.
- Four truss elements abut with their end faces on a node piece 2 at contact surfaces 9.
- the four truss elements 1 are connected to the pretensioning elements 7 in the top chords 3 and the pretensioning elements 8 in the bottom chords 4.
- two pretensioning elements 7 and 8 run in the top chords 3 and the bottom chords 4 in one direction.
- Two further prestressing elements 7 and 8 each run orthogonally to a connection of the other two truss elements 1, which aligned to each other to create. If a prestressing force is introduced into the prestressing elements 7 and 8, the truss elements 1 are pressed against the node piece 2 and thus bring about a stable structure.
- the node piece 2 can be supported by means of a support 10 in order to support the truss girder system.
- Figure 4 shows a schematic representation of a profile 11 of an end face of the truss element 1.
- the profiling in addition to the pretensioning force, contributes to the transmission of the shear forces of the truss girder system taking place reliably.
- a corresponding corresponding profiling is provided on the contact surfaces 9 of the node piece 2.
- the profiling can be in the form of positive and negative elevations or depressions emerging from the contact surface 9.
- the profiling 11 can take place in a clear shape, but also in a type of micro-profiling. It is essential that the prestressing force, which press the truss elements 1 against each other or against the node piece 2, is supported.
- the profiling 11 can also result in a certain stabilization in the lateral direction of the truss element 1.
- the individual truss elements 1 and node pieces 2 have been strung together, the individual components are clamped together by a pretensioning subsequently introduced in the upper chord 3 and lower chord 4. The entire system is stable after pretensioning.
- the truss girder grating system can be assembled as an overall system, i.e. for example, be placed on the supports 10.
- the present invention is not limited to the embodiments shown.
- a wedge-shaped mig formed end face of the truss elements 1 are provided, which result in a series of, for example, four truss elements 1 a closed joint. This, too, can result in sufficient pressing of the individual truss elements 1 by clamping the prestressing elements 7 and 8.
- the prestressing elements 7 and 8 are tightened using a known tensioning device, which is usually arranged at the respective end of a row of truss elements and node pieces.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Rod-Shaped Construction Members (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Polymerisation Methods In General (AREA)
- Coating Apparatus (AREA)
- Bridges Or Land Bridges (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005017366A DE102005017366A1 (de) | 2005-04-14 | 2005-04-14 | Fachwerk-Trägerrost-System |
PCT/EP2006/061572 WO2006108867A1 (de) | 2005-04-14 | 2006-04-13 | Fachwerk-trägerrost-system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1869264A1 true EP1869264A1 (de) | 2007-12-26 |
EP1869264B1 EP1869264B1 (de) | 2011-04-13 |
Family
ID=36658921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06743294A Not-in-force EP1869264B1 (de) | 2005-04-14 | 2006-04-13 | Fachwerk-trägerrost-system |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1869264B1 (de) |
AT (1) | ATE505602T1 (de) |
DE (2) | DE102005017366A1 (de) |
WO (1) | WO2006108867A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007037436A1 (de) * | 2007-08-08 | 2009-02-12 | MAX BÖGL Fertigteilwerke GmbH & Co. KG | Brandwand oder Komplextrennwand aus mehreren gleichartigen Wandelementen |
CN102888930A (zh) * | 2011-07-18 | 2013-01-23 | 湖南邱则有专利战略策划有限公司 | 装配式空腹网格板楼盖 |
CN107035044A (zh) * | 2017-05-19 | 2017-08-11 | 易筑集合(北京)科技有限公司 | 一种轻钢组合楼盖结构承重体系 |
CN107254917B (zh) * | 2017-07-11 | 2022-08-09 | 浙江东南网架股份有限公司 | 一种超大跨度多阶次预应力钢桁架结构及其施工方法 |
CN110821037A (zh) * | 2019-12-20 | 2020-02-21 | 重庆交通大学 | 带纤维增强复合材料格栅腹板的t形梁和箱形梁 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE85165C (de) * | ||||
FR992377A (fr) * | 1944-06-24 | 1951-10-17 | Plancher rigide en éléments préfabriqués | |
DE975592C (de) * | 1948-04-22 | 1962-02-01 | Dyckerhoff & Widmann Ag | Verfahren zur Herstellung einer Fachwerkbruecke aus Stahlbeton und bewegliches Geruest zur Durchfuehrung des Verfahrens |
DE921283C (de) * | 1948-10-02 | 1954-12-13 | Adolf Dr-Ing Koch | Bauelement, insbesondere aus Stahlbeton, oder Bauhilfselement aus anderem Werkstoff mit biege-, scher- und torsionsfester Stossverbindung |
DE869976C (de) * | 1948-10-02 | 1953-03-09 | Gollnow U Sohn J | Fachwerktraeger, insbesondere fuer Brueckenkonstruktionen, und Verfahren zu deren Montage |
DE911329C (de) * | 1951-09-26 | 1954-05-13 | Max Gessner Dipl Ing Dipl Ing | Fachwerktraeger mit Gurten aus Stahlbeton |
DE861315C (de) * | 1951-10-12 | 1952-12-29 | Gustav Schneider | Hohlstein fuer Decken und Waende |
US2925727A (en) * | 1954-08-11 | 1960-02-23 | Gilbert Ash Ltd | Prestressed concrete floor, roof and like structures |
DE1193225B (de) * | 1956-03-17 | 1965-05-20 | Dyckerhoff & Widmann Ag | Stahlbetonfachwerktraeger |
CH367963A (de) * | 1959-01-15 | 1963-03-15 | Ernst Dipl Ing Waelli | Verfahren zur Herstellung einer Trägerrostdecke und nach diesem Verfahren hergestellte Trägerrostdecke |
FR1560631A (de) * | 1968-02-09 | 1969-03-21 | ||
CH575524A5 (de) * | 1974-04-18 | 1976-05-14 | Peter Emil | |
DE2600602A1 (de) * | 1975-01-31 | 1976-08-05 | Betschart Anton Peter Dipl Ing | Tragsystem |
DE3114719C2 (de) * | 1981-04-11 | 1983-04-28 | Stahlwerke Peine-Salzgitter Ag, 3150 Peine | Fachwerkträger |
DE3833202C2 (de) * | 1988-09-30 | 1994-04-14 | Dyckerhoff & Widmann Ag | Balkenartiges Tragglied aus Spannbeton |
DE4003207A1 (de) * | 1990-02-03 | 1991-08-08 | Heuer Michael Andree | Fachwerk aus fertigteilen |
DE4026008A1 (de) * | 1990-08-14 | 1992-02-20 | Harald Schmitt | Vorgespannter fertigteilbrueckentraeger aus einzelteilen |
US6920728B2 (en) * | 2002-09-25 | 2005-07-26 | James M. Powers | Column and beam construction and method |
DE20309447U1 (de) * | 2003-06-18 | 2003-09-11 | Wec Turmbau Gmbh | Selbstverdichtender Beton (Conflex) |
-
2005
- 2005-04-14 DE DE102005017366A patent/DE102005017366A1/de not_active Withdrawn
-
2006
- 2006-04-13 WO PCT/EP2006/061572 patent/WO2006108867A1/de not_active Application Discontinuation
- 2006-04-13 AT AT06743294T patent/ATE505602T1/de active
- 2006-04-13 EP EP06743294A patent/EP1869264B1/de not_active Not-in-force
- 2006-04-13 DE DE502006009300T patent/DE502006009300D1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2006108867A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006108867A8 (de) | 2007-12-21 |
EP1869264B1 (de) | 2011-04-13 |
WO2006108867A1 (de) | 2006-10-19 |
DE102005017366A1 (de) | 2006-10-19 |
ATE505602T1 (de) | 2011-04-15 |
DE502006009300D1 (de) | 2011-05-26 |
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