EP0699805A1 - Verstärkungsvorrichtung - Google Patents
Verstärkungsvorrichtung Download PDFInfo
- Publication number
- EP0699805A1 EP0699805A1 EP95306099A EP95306099A EP0699805A1 EP 0699805 A1 EP0699805 A1 EP 0699805A1 EP 95306099 A EP95306099 A EP 95306099A EP 95306099 A EP95306099 A EP 95306099A EP 0699805 A1 EP0699805 A1 EP 0699805A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reinforcement
- hook portion
- reinforcement device
- loops
- connector
- 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- Withdrawn
Links
Images
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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
Definitions
- This invention relates to a reinforcement device for connection to a structure.
- connection may comprise one or more loops of reinforcement wire cast into each facing panel and corresponding loops formed on the ends of the reinforcement bars by bending over the end of each bar and welding it back on itself. The loops are aligned and a steel bar pushed through them to secure the reinforcement bars to the facing panel. To avoid reducing the tensile capacity of the loops on the end of the reinforcement bars their radius must be no less than four times their diameter. In practice, the reinforcement bars need to be formed from steel wire of at least 8 mm diameter.
- a reinforcement device for connection to a structure, comprising a reinforcement member having a hook portion for engagement around a coupling element secured to the structure, the reinforcement device also comprising a connector having spaced-apart openings receiving opposite limbs of the hook portion thereby to prevent displacement of the limbs away from each other, and to provide a tight connection.
- the coupling element preferably comprises a loop, the sides of the loop may comprise a pair of reinforcement elements anchored to and projecting from the structure in parallel and the end of the loop may comprise a third element which interconnects the reinforcement elements.
- the third element is preferably a removable bar.
- a plurality of pairs of reinforcement elements may be interconnected by a single removable bar.
- the coupling loops may comprise bent lengths of reinforcement bar having a diameter at least half that of the reinforcement member.
- each loop may comprise a single reinforcement element anchored to the structure.
- the connector may comprise a plate provided with a pair of spaced apart slots in one edge, which preferably extend for approximately /3 of the width of the connector. In use, the connector is simply pushed onto the opposite limbs of the hook portion of reinforcement member.
- the connector may comprise a plate provided with a pair of spaced apart holes. Before the reinforcement member is connected to the coupling element the first limb is threaded through one of the holes in the plate and the plate is pushed along the reinforcement member beyond the hook portion onto the second limb. Once the reinforcement member is engaged with the coupling element, the plate is slid back such that the other hole engages the first limb.
- the diameter of the openings in the plate is slightly greater than the outside diameter of the reinforcement member, such that the plate can slide freely onto the reinforcement member.
- the separation of the openings is equal to approximately four times the diameter of the reinforcement member.
- the width of the plate is at least two times the diameter of each opening.
- the reinforcement member may comprise standard ladder wire.
- the reinforcement member may comprise strip reinforcement.
- Figure 1A shows a reinforced soil retaining wall 2 during construction.
- the retaining wall 2 comprises two rows of facing panels 4, 5 located one above the other on a levelling pad 6.
- a temporary timber framework 8 holds the facing panels 4, 5 in position during construction.
- Reinforcement brackets 10, 11 are cast into each facing panel 4, 5.
- the reinforcement framework 14 is then connected to the respective brackets 10 on each of the first row of facing panels 4.
- backfill 12 is then placed over the reinforcement framework 14 and again compacted.
- a second layer of reinforcement bars (not shown) is laid and connected to the respective facing panels 5.
- Figures 2 and 3 show in detail how the reinforcement framework 14 is connected to the first row of facing panels 4.
- the brackets 10 each comprise a pair of steel reinforcement bars bent back on themselves to form loops 16, 17 which project at right angles from the plane of the respective facing panel 4.
- the ends of the reinforcement bars forming the loops 16, 17 are extended and are anchored in the facing panel 4, such that they lie substantially parallel to the plane of the facing panel 4.
- the reinforcing framework 14 comprises a ladder bar arrangement of longitudinal and transverse reinforcement bars 18, 19 welded together where they intersect.
- the longitudinal bars 18 are each bent over at their free end 20 to form a hook portion 22.
- the radius of the bend is generally not less than four times the diameter of the longitudinal bars 18.
- each longitudinal bar 18 Prior to connection of the hook portions 22 of the longitudinal bars 18 to the brackets 10 in each facing panel 4, the free end 20 of each longitudinal bar 18 is inserted through an opening 24 of a connector plate 26 (see Figure 4). The connector plate 26 is then pushed along the longitudinal bar 18 beyond the position of the hook portion 22.
- the hook portions 22 of the longitudinal bars 18 are inserted between respective pairs of loops 16, 17 and a steel bar 28 is inserted through the hook portions 22 of the longitudinal bars 18 and through of the loops 16, 17 of the brackets 10.
- each connector plate 26 is swung up and is located over the free end 20 of the respective longitudinal bar 18 by means of a second hole 30 formed in the opposite end of the connector plate 26 to the opening 24.
- the plate 26 is then pushed along the bar 18, in the direction of arrow A in Figure 3, towards the facing panels 4.
- each steel bar 28 is gripped firmly between the loops 16, 17 of each bracket 10 and the corresponding hook portion 22 of the respective longitudinal bar 18. Slight distortion of the reinforcing framework 14, when it is pulled, accommodates misalignment of the connections which may be present due to construction or site tolerances.
- Figure 4 shows an enlarged view of the connector plate 26 having first and second openings 24, 30 at its opposite ends.
- the separation of the openings 24, 30 is determined by the radius of the bend of each hook portion 22.
- the separation of the openings 24, 30 will be not less than four times the diameter of the longitudinal bars 18.
- the size and shape of the connector plate will be determined by the particular application and by the loads which it must resist.
- the width of the plate should be not less than two times the diameter of the holes 24, 30.
- the longitudinal bars 18 may be of 10 mm minimum diameter, so that the spacing of the holes 24, 30 is approximately 40 mm.
- the thickness of the plate is typically at least 3 mm.
- FIG 5A and 5B show a length of high adherence strip 32 having equidistantly spaced ridges 34 on its upper and lower surfaces to improve adherence in soil.
- the free end 36 of the strip 32 is bent over to form a hook portion 38 which engages directly in a bracket 40 formed from a bent length of reinforcement wire cast into each facing panel 4.
- connection of the reinforcement strip 32 to the bracket 40 does not require the insertion of a steel bar 28 (see Figure 2 or 3).
- the length L of the hook portion 38 is shorter than the length of the open loop of the bracket 40, so that the strip 32 may simply be lifted and the hook portion 38 dropped through the loop of the bracket 40.
- the strip 32 is then pulled, in a direction B, away from the respective facing panel 4, to secure the hook portion 38 to the bracket 40.
- connection is completed by means of a connector plate 42 shown in detail in Figure 8.
- the connector plate 42 comprises a rectangular steel plate 44 provided with a pair of spaced apart slots 46, 48 in one edge. The slots extend for approximately /3 of the width of the plate 44.
- the connector plate 42 is slid on to the strip 32 from one side.
- the first slot 46 engages a first limb 39 of the hook portion 38 and the second slot 48 engages a second limb 41 of the hook portion 38, thereby maintaining the bend in the strip 32 when a withdrawing force is applied to the strip 32 in a direction B away from the facing panel 4.
- the position of the strips 32 can be adjusted independently, such that simply by pulling on the strips 32 in the direction B away from the facing panels 4, abutment can be achieved between the hooked portion 38 of each strip 32 and the end of the loop of the respective bracket 40. This ensures good and consistent transfer of load from the strips 32 to the facing panels 4.
- the size and general proportions of the reinforcement strips 32 and connector plate 42 are dependent on the application and the loads to be resisted.
- the width of the slots 46, 48 in the connector plate 42 will be slightly greater than the thickness of the strip 32 and the depth of the slots 46, 48 will be approximately equal to the width of the strip 32.
- the width of the strip would be 40 to 75 mm and the thickness 3.5 to 12 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9417507 | 1994-08-31 | ||
GB9417507A GB9417507D0 (en) | 1994-08-31 | 1994-08-31 | Reinforcement device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0699805A1 true EP0699805A1 (de) | 1996-03-06 |
Family
ID=10760609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95306099A Withdrawn EP0699805A1 (de) | 1994-08-31 | 1995-08-31 | Verstärkungsvorrichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0699805A1 (de) |
GB (1) | GB9417507D0 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29605181U1 (de) * | 1996-03-20 | 1996-08-29 | Wilhelm Siemsen Gmbh U Co Kg | Rückverankerte Winkelstützwand |
FR2796972A1 (fr) * | 1999-07-30 | 2001-02-02 | Joseph Golcheh | Mur de soutenement a base d'elements prefabriques |
FR2796971A1 (fr) * | 1999-07-30 | 2001-02-02 | Joseph Golcheh | Procede de renforcement d'un mur de soutenement et element de renforcement d'un tel mur |
WO2001009439A1 (fr) * | 1999-07-30 | 2001-02-08 | Joseph Golcheh | Procede de constitution d'un mur de soutenement a partir d'un massif renforce et element de renforcement d'un tel massif |
FR2869051A1 (fr) * | 2004-04-19 | 2005-10-21 | Joseph Golcheh | Un nouvel dispositif de fixation de renforts en treillis soude au parement d'ecrans ou de murs de soutenement |
WO2011006036A3 (en) * | 2009-07-10 | 2012-11-22 | Illinois Tool Works Inc. | Cast-in connector |
CN112921727A (zh) * | 2021-01-28 | 2021-06-08 | 攀钢集团工程技术有限公司 | 高陡边坡道路扩宽施工方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2753243A1 (de) * | 1977-11-29 | 1979-06-07 | Bayer Ag | Bewehrung von armierten erdbauwerken |
US4341491A (en) * | 1976-05-07 | 1982-07-27 | Albert Neumann | Earth retaining system |
EP0492975A1 (de) * | 1990-12-21 | 1992-07-01 | Hector Samuel Martinez-Gonzalez | Verbesserung zu armierten Erdbauwerken und Aufschüttungbausystemen |
US5190413A (en) * | 1991-09-11 | 1993-03-02 | The Neel Company | Earthwork system |
-
1994
- 1994-08-31 GB GB9417507A patent/GB9417507D0/en active Pending
-
1995
- 1995-08-31 EP EP95306099A patent/EP0699805A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4341491A (en) * | 1976-05-07 | 1982-07-27 | Albert Neumann | Earth retaining system |
DE2753243A1 (de) * | 1977-11-29 | 1979-06-07 | Bayer Ag | Bewehrung von armierten erdbauwerken |
EP0492975A1 (de) * | 1990-12-21 | 1992-07-01 | Hector Samuel Martinez-Gonzalez | Verbesserung zu armierten Erdbauwerken und Aufschüttungbausystemen |
US5190413A (en) * | 1991-09-11 | 1993-03-02 | The Neel Company | Earthwork system |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29605181U1 (de) * | 1996-03-20 | 1996-08-29 | Wilhelm Siemsen Gmbh U Co Kg | Rückverankerte Winkelstützwand |
FR2796972A1 (fr) * | 1999-07-30 | 2001-02-02 | Joseph Golcheh | Mur de soutenement a base d'elements prefabriques |
FR2796971A1 (fr) * | 1999-07-30 | 2001-02-02 | Joseph Golcheh | Procede de renforcement d'un mur de soutenement et element de renforcement d'un tel mur |
WO2001009439A1 (fr) * | 1999-07-30 | 2001-02-08 | Joseph Golcheh | Procede de constitution d'un mur de soutenement a partir d'un massif renforce et element de renforcement d'un tel massif |
US6675547B1 (en) | 1999-07-30 | 2004-01-13 | Joseph Golcheh | Method for forming a head wall from an anchor pile and reinforcing member for said anchor pile structure |
ES2215437A1 (es) * | 1999-07-30 | 2004-10-01 | Joseph Golcheh | Procedimiento de constitucion de un muro de sostenimiento a partir de un macizo o apilamiento reforzado y elemento de refuerzo de tal macizo. |
FR2869051A1 (fr) * | 2004-04-19 | 2005-10-21 | Joseph Golcheh | Un nouvel dispositif de fixation de renforts en treillis soude au parement d'ecrans ou de murs de soutenement |
WO2011006036A3 (en) * | 2009-07-10 | 2012-11-22 | Illinois Tool Works Inc. | Cast-in connector |
CN112921727A (zh) * | 2021-01-28 | 2021-06-08 | 攀钢集团工程技术有限公司 | 高陡边坡道路扩宽施工方法 |
Also Published As
Publication number | Publication date |
---|---|
GB9417507D0 (en) | 1994-10-19 |
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Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19960907 |