GB1256359A - Improvements in prestressed concrete structures - Google Patents

Improvements in prestressed concrete structures

Info

Publication number
GB1256359A
GB1256359A GB5608668A GB5608668A GB1256359A GB 1256359 A GB1256359 A GB 1256359A GB 5608668 A GB5608668 A GB 5608668A GB 5608668 A GB5608668 A GB 5608668A GB 1256359 A GB1256359 A GB 1256359A
Authority
GB
United Kingdom
Prior art keywords
concrete
nut
bars
postcompressed
cast
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
Application number
GB5608668A
Inventor
Michael Robert Johns
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB5608668A priority Critical patent/GB1256359A/en
Publication of GB1256359A publication Critical patent/GB1256359A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • 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
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • 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
    • E04C5/12—Anchoring devices

Abstract

1,256,359. Cast-in situ energised concrete. M. R. JOHNS. 20 Feb., 1970 [26 Nov., 1968], No. 56086/68. Heading E1W. The compressive stress in a cast in situ reinforced concrete column 1 due to its own and/or surrounding structure dead weight is wholly or partly transferred onto one or more steel reinforcing bars 2 which may be held in compression by a nut 7 engaging an end plate 9 to which are welded anchoring members 10 embedded in the concrete. Similar anchoring members 10 are welded to a bottom plate 5. The bar or bars 2 are preferably postcompressed by means of jacks mounted on the end plate 9 and bearing on the end 4, the nut 7 being subsequently tightened and the jack released. An expanded polystyrene washer 13 set below the nut acts as a spacer compressed during jacking. The bars are surrounded by greased tapes or polystyrene sheeting to permanently or temporarily delay binding of the bar to the concrete. In multiple storey structures each storey may be postcompressed as it is connected by jointed rods running through to the foundation. The structure may also contain ordinary prestressed i.e. pretensioned reinforcement.
GB5608668A 1968-11-26 1968-11-26 Improvements in prestressed concrete structures Expired GB1256359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5608668A GB1256359A (en) 1968-11-26 1968-11-26 Improvements in prestressed concrete structures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5608668A GB1256359A (en) 1968-11-26 1968-11-26 Improvements in prestressed concrete structures

Publications (1)

Publication Number Publication Date
GB1256359A true GB1256359A (en) 1971-12-08

Family

ID=10475687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5608668A Expired GB1256359A (en) 1968-11-26 1968-11-26 Improvements in prestressed concrete structures

Country Status (1)

Country Link
GB (1) GB1256359A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050346A2 (en) * 1980-10-22 1982-04-28 Fin Est S.P.A. An anchoring head for strands or cables for tensioning metal or concrete structures
ITFI20100239A1 (en) * 2010-12-03 2012-06-04 Vanni Puccioni PRECOMPRESSED STRUCTURAL ELEMENTS WITH EXTERNAL ARMOR, STONE, BRICKS, OR SCRAPPING
CN104594640A (en) * 2014-12-01 2015-05-06 中建七局第四建筑有限公司 High-rise building secondary structure foam concrete cast-in-situ bar planting technology and construction method thereof
CN106121264A (en) * 2016-06-23 2016-11-16 青岛海川建设集团有限公司 Postinstalled chemically rebar construction technology
CN109594721A (en) * 2018-12-04 2019-04-09 东南大学 A kind of prestressed FRP rebar pre-tensioning system stretch-draw anchor equipment
CN115095030A (en) * 2022-06-29 2022-09-23 广东省建筑设计研究院有限公司 Connecting structure of masonry constructional column top

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050346A2 (en) * 1980-10-22 1982-04-28 Fin Est S.P.A. An anchoring head for strands or cables for tensioning metal or concrete structures
EP0050346A3 (en) * 1980-10-22 1982-07-14 Ponteggi Est S.P.A. An anchoring head for strands or cables for tensioning metal or concrete structures
ITFI20100239A1 (en) * 2010-12-03 2012-06-04 Vanni Puccioni PRECOMPRESSED STRUCTURAL ELEMENTS WITH EXTERNAL ARMOR, STONE, BRICKS, OR SCRAPPING
CN104594640A (en) * 2014-12-01 2015-05-06 中建七局第四建筑有限公司 High-rise building secondary structure foam concrete cast-in-situ bar planting technology and construction method thereof
CN106121264A (en) * 2016-06-23 2016-11-16 青岛海川建设集团有限公司 Postinstalled chemically rebar construction technology
CN109594721A (en) * 2018-12-04 2019-04-09 东南大学 A kind of prestressed FRP rebar pre-tensioning system stretch-draw anchor equipment
CN115095030A (en) * 2022-06-29 2022-09-23 广东省建筑设计研究院有限公司 Connecting structure of masonry constructional column top
CN115095030B (en) * 2022-06-29 2024-03-29 广东省建筑设计研究院有限公司 Connection structure of brickwork constructional column post top

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