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EP0138165A2 - Tragwerkmantel für Tragkonstruktionen - Google Patents

Tragwerkmantel für Tragkonstruktionen Download PDF

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Publication number
EP0138165A2
EP0138165A2 EP84111908A EP84111908A EP0138165A2 EP 0138165 A2 EP0138165 A2 EP 0138165A2 EP 84111908 A EP84111908 A EP 84111908A EP 84111908 A EP84111908 A EP 84111908A EP 0138165 A2 EP0138165 A2 EP 0138165A2
Authority
EP
European Patent Office
Prior art keywords
column
wound
glasscloth
mantle surface
bearing
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Withdrawn
Application number
EP84111908A
Other languages
English (en)
French (fr)
Other versions
EP0138165A3 (de
Inventor
Kálmán Szalai
Béla Lepuschán
Lajos Pusztai
Béla Csák
Péter Nédli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSAK BELA
LEPUSCHAN BELA
NEDLI PETER
Original Assignee
CSAK BELA
LEPUSCHAN BELA
NEDLI PETER
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CSAK BELA, LEPUSCHAN BELA, NEDLI PETER filed Critical CSAK BELA
Publication of EP0138165A2 publication Critical patent/EP0138165A2/de
Publication of EP0138165A3 publication Critical patent/EP0138165A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials

Definitions

  • the invention relates to a load-bearing mantle surface for bearing structures, in particular columns.
  • connection establishing co-operation realizes transfer of forces on a large surface, accordingly proper distribution is obtained.
  • mechanical con nections transfer of forces is taking place locally, while concentrated forwarding loads may result in unadvantageous local circumstances in certain cases,
  • the methode can be considered as more advantageous, in course of which along the edges of the bearing element, e.g. a column rods made of shapes are arranged which are intercon - nected by the lashes having been welded thereon. After having been cooled, the lashes are exerting a contracting force resulting in a transversal stress. Thereafter, applying the traditional method, the mantle is prepared by means of circumpositioned cradles, by guniting the concrete with a spray gun.
  • This solution did not prove to be useful, as labour-and space requirement is too high, at the same time wet technology /in-situ concreting/ is expressively disadvantageous at existing buildings, e.g. at falts.
  • the GB-PS 1.603.252 /Michelin and Cie./ entitled "Reinforcement elements” relates to the reinforcement of concrete elements /columns/ by using a band with a fibrestructure and corrugated transversely in two directions.
  • the main advantage of this solution lies in the proper adhesion to the concrete. Prior to hardening of the concrete, the band is applied. By using this solution, reinforcing effect can be increased by 50%.
  • the corrosionresistant encasing is made of glassfibre or epoxy resin and it is closed by engaging tongue hooks along the generatrix.
  • the space between the encasement and the pillar is filled with a filler, e.g. with concrete or epoxy resin.
  • the strands Prior to use, the strands are pre-stressed by drawing, the extent of which lies in the range between 5% of the resting length and 80 to 90% of elasticity limit.
  • a mantle is formed from the pre-stressed strands around the column, oriented in axial direction, thereafter, perpendicularly thereto, a bent bundle is formed along the periphery for the reinforcement of the column.
  • Said solution does not serve exclusively for reinforcing architectural bearing structures, it is suitable for use on other fields too.
  • the aim of the invention is to develop partly a load-bearing encasement, which can be separated from the inner core in case of necessity and-can be repeatedly used, partly which enables the formation of a load-bearing structure assembled of several parts.
  • a further task lies in to develop a bearing structure which is well suitable for reinforcing buildings on earthquake-endangerded places, as well as for the reconstruction of buildings or building-parts on areas afflicted by earthquake, in a reliable manner.
  • the invention is based on-the recognition, in so far as, if the lower and upper end of the column are provided with a complementary winding, strength of the mantle surface can be considerably increased.
  • a further possibility lies in that with extremly weak bearing structure between the inner surface of the cradle and the outher surface of the column a granular reinforcing material is filled, further increasing considerably the strength of the bearing structure. Deformation and crumbling of the bearing structure can be prevented by winding around with a glassfibrous band embedded in a synthetic materials whereby load- ability of the structure can be increased.
  • the complementary reinforcement the ends of the column may be formed as an elastic articulation, when a seismic effect is to be afraid of
  • the load-bearing mantle surface according to the invention for load-bearing structures in particular for columns is formed so, that a simple or multilayer glass cloth having been impregnated with an adhesive and wound on a cradle made of paper or any other suitable material with a diameter being larger, than the diameter of the column or in case of a prismatic cross-section, larger than the longest edge thereof, is wound onto the column; between the mantle surface of the column and the glass cloth a granular material, e.g.
  • sand, gravel or stonesplit is filled; on the lower and upper end of the column a complementary glass cloth is wound onto the column, optionally, a splicing muff can be wound at the splicing points of the glass cloth having been sound onto the column.
  • a further characteristic of the invention lies in that the width of the winding strips of the wound glass cloth amounts to at leats 30% of the diameter of the column or in case of a prismatic form, of the smallest edge of the cross-section of the prism.
  • the strips of the glass cloth are wound helically, with an overlapping of at least 1 cm, or tangentially.
  • the length of the glasscloth wound onto the ends of the column for complementary purposes measured in direction of the axis of the column corresponds at least to the diameter of the cylindrical column, or in case of a prismatic cross-section, to the length of the shortest edge.
  • elements with a convex surface are fixed on the column surface, which are preferably embedded into swelling cement.
  • glass cloth is directly wound onto the column.
  • a further advantage lies in that by using an inconsiderable material quantity transversal expansion is prevented up to the increased level of loadability and in case of a seismec effect ability for plastic deformation will be increased.
  • a cradle 2 e.g. made of paper, having a larger diameter, than that of the column 1 is placed onto the column 1.
  • some granular material 4 e.g. gravel or sand.
  • a splicing muff is used, which is provided with a complementary wounding.
  • a peripheric complementary wound is applied approximately perpendicularly to the longitudinal axis of the column 1, arranged with an utmost small pitch, while by winding helically the glasscloth covering the whole surface of the bearing structure, complementary glasscloth having been wound on the ends la, lb of the column 1 is fully covered.
  • complementary wounding with the glasscloth is made by using a material being identical with the glasscloth forming the mantle surface.
  • Theoretically stripwidth of the glasscloth used for this purpose is of no importance, it seems, however, to be expedient, if the strips forming the complementary winding are forming overlapping wounds being in contact with one another.
  • the length of wound complementary glasscloth 3 applied on the ends la, 1b of the column 1, measured in axial direction corresponds at least the diameter of the bearing element, or in case of a prismatic cross-section, at least to the shortest edge of the prism.
  • the width of the strips 3a of the glasscloth 3 corresponds at least to the 30% of the column diameter, or in case of a prismatic cross-section to the 30% of the shortest edge of the cross-section.
  • the method according to the invention can be successfully used for reinforcing existing bearing structures, e.g. columns, -e.g. made of bauxite concrete -, for the repair and reconstruction of load-bearing structural elements damaged by fire or earthquakes the more, for achieving full load-ability of bearing structures made with an inconsiderable cement quantity and thus having ab ovo a reduced strength.
  • existing bearing structures e.g. columns, -e.g. made of bauxite concrete -

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Building Environments (AREA)
EP84111908A 1983-10-12 1984-10-04 Tragwerkmantel für Tragkonstruktionen Withdrawn EP0138165A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU353383A HU186805B (en) 1983-10-12 1983-10-12 Load-bearing casing surface for supporting structures
HU353383 1983-10-12

Publications (2)

Publication Number Publication Date
EP0138165A2 true EP0138165A2 (de) 1985-04-24
EP0138165A3 EP0138165A3 (de) 1986-04-30

Family

ID=10964424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111908A Withdrawn EP0138165A3 (de) 1983-10-12 1984-10-04 Tragwerkmantel für Tragkonstruktionen

Country Status (3)

Country Link
EP (1) EP0138165A3 (de)
JP (1) JPS60102457A (de)
HU (1) HU186805B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010394A2 (de) * 1995-09-01 1997-03-20 Sager Juergen Hohlprofilförmiges tragelement für die bautechnik
CN106930469A (zh) * 2017-04-07 2017-07-07 华侨大学 一种组合约束矩形钢管混凝土柱结构
CN114658249A (zh) * 2022-03-01 2022-06-24 华南理工大学 一种水泥基复合材料加固混凝土柱结构及施工方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2003027416A1 (ja) * 2001-09-25 2005-01-06 構造品質保証研究所株式会社 構造物の補強構造、補強材料、免震装置および補強方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD41435A (de) *
US2358758A (en) * 1943-03-12 1944-09-19 New England Concrete Pipe Corp Structural reinforced cementitious construction
US3798867A (en) * 1972-03-02 1974-03-26 B Starling Structural method and apparatus
US4019301A (en) * 1974-07-15 1977-04-26 Fox Douglas L Corrosion-resistant encasement for structural members

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD41435A (de) *
US2358758A (en) * 1943-03-12 1944-09-19 New England Concrete Pipe Corp Structural reinforced cementitious construction
US3798867A (en) * 1972-03-02 1974-03-26 B Starling Structural method and apparatus
US4019301A (en) * 1974-07-15 1977-04-26 Fox Douglas L Corrosion-resistant encasement for structural members

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010394A2 (de) * 1995-09-01 1997-03-20 Sager Juergen Hohlprofilförmiges tragelement für die bautechnik
WO1997010394A3 (de) * 1995-09-01 1997-03-20 Juergen Sager Hohlprofilförmiges tragelement für die bautechnik
CN106930469A (zh) * 2017-04-07 2017-07-07 华侨大学 一种组合约束矩形钢管混凝土柱结构
CN114658249A (zh) * 2022-03-01 2022-06-24 华南理工大学 一种水泥基复合材料加固混凝土柱结构及施工方法

Also Published As

Publication number Publication date
JPS60102457A (ja) 1985-06-06
EP0138165A3 (de) 1986-04-30
HU186805B (en) 1985-09-30

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