GB2515250A - Composite bearing plate - Google Patents
Composite bearing plate Download PDFInfo
- Publication number
- GB2515250A GB2515250A GB1303770.0A GB201303770A GB2515250A GB 2515250 A GB2515250 A GB 2515250A GB 201303770 A GB201303770 A GB 201303770A GB 2515250 A GB2515250 A GB 2515250A
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- GB
- United Kingdom
- Prior art keywords
- bearing plate
- structural
- plate according
- ribs
- structural bearing
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- 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.)
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- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/02—Scaffold feet, e.g. with arrangements for adjustment
- E04G5/025—Foot load distribution plates
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A structural bearing plate is made wholly of fibre reinforced polymer and has a network of integrally cast ribs to permit a vertical load to be evenly loaded onto a foundation subgrade. The plate may have a protruding collar 1 over which a structural tube can be slotted. The plate may have a combination of ring ribs 3 and spiral ribs 4, or may have a combination of ring ribs and radial ribs. The ribs may be integrally connected to a top or bottom flange (5, figure 3). The protruding collar may slot into a matching inner wall of an inner reinforcing ring rib to allow stacking. The plate may be injection moulded and may be used to support scaffolding structures.
Description
COMPOSITE BEAIUNG PLATE
FIELD OF INVENTION
The present invention relates to reusable load bearing foundation plates constructed from advanced composite materials used especially, but not only, for scaffold structures, and for structures wholly or partially comprised of tubes.
BACKGROUND TO THE INVENTION
Many temporary structures carry loads requiring significant vertical forces to be transmitted into the foundations, Often these foundations are on relatively soft ground requiring the concentrated loads to be spread over a considerable area to prevent foundation failure. There are a number of past solutions to this problem. Many of these are made from steel to take advantage of the high stresses this material is capable of transmitting. However, in contact with moist ground these steel footings often experience rapid colTosion. In marine environments and in industrial locations where corrosion is a problem for any exposed steel the rate of deterioration can be very high. In some chemically hostile environments, the high rates of colTosion render the footings unfit for purpose. sometimes after quite short periods of service. Many metallic footings are bulky, heavy to transport and awkward to handle during erection and dismantling. They have a high thermal capacity and a high coefficient of thermal conduction which means handling at high or low ambient temperatures can be very uncomfortable. To keep their size down these steel footings are often used in conjunction with timber planks which enable the concentrated foundation loads to be more evenly spread over the often weak soil beneath.
However, when used over long time periods these wooden planks are prone to rotting and even splitting failure as a result of the high stresses induced in the timber. More recently composite replacements to the timber planks have been introduced and have the advantage of not being subject to same degradation as the timber bearers. However, in most cases these composite spreaders continue to be used in conjunction with steel footings and consequently do not solve the problem of rapid corrosion.
Accordingly, the present invention aims to address at least one disadvantage associated with the prior art whether discussed herein or otherwise.
SUMMARY OF INVENTION
The present invention provides a detachable structural bearing plate comprised entirely of a polymeric resin that may or may not be strengthened with reinforcing fibres.
Suitably. there is provided a detachable structural beating plate comprised entirely of a polymeric resin that may or may not be strengthened with reinforcing fibres.
Suitably, there is provided a polymeric detachable structural bearing plate comprised of a polymenc based resin material with reinforcing fibres randomly orientated to provide sufficient strength in each of its component pails.
Suitably, the detachable bearing plate is adapted for use with structural tubes. Suitably, the detachable bearing plate is adapted for use with circular structural tubes. Suitably, the detachable bearing plate is adapted for use with scaffold tubes.
Suitably, the detachable bearing plate is adapted to allow a tube to be slotted over a protruding collar which prevents horizontal movement of the tube. Suitably, the detachable bearing plate is adapted to allow a tube to be slotted into a protruding coflar which prevents horizontal movement of the tube. Suitably, the detachable bearing plate is adapted to allow a circular tube to be slotted over a protruding collar which prevents horizontal movement of the tube. Suitably, the detachable bearing plate is adapted to allow a circular tube to be slotted into a protruding collar which prevents horizontal movement of the tube. Suitably, the detachable bearing plate is adapted to allow a scaffold tube to be slotted over a protruding collar which prevents horizontal movement of the tube. Suitably. the detachable bearing plate is adapted to allow a scaffold tube to be slotted into a protruding collar which prevents horizontal movement of the tube. Suitably.
the detachable bearing plate is a detachable footing for a scaffold standard.
Suitably, the detachable bearing plate is adapted to allow easy fitting beneath a tube in use. Suitably, the detachable bearing plate is adapted to allow easy release from a tube in use. Suitably, the detachable bearing plate may as required be attached or released from a tube in use. Suitably, the detachable bearing plate is adapted to allow easy fitting beneath a circular tube in use. Suitably, the detachable bearing plate is adapted to allow easy release from a circular tube in use. Suitably, the detachable bearing plate may as required be attached or released from a circular tube in use. Suitably, the detachable bearing plate is adapted to allow easy fitting beneath a scaffold tube in use. Suitably, the detachable bearing plate is adapted to allow easy release from a scaffold tube in use. Suitably. the detachable bearing plate may as required be attached or released from a scaffold tube in use.
Suitably, the detachable bearing plate is adapted to allow a tube to bear upon a matching inner ring rib to allow the vertical force from the tube to be evenly spread over the depth of the reinforcing ribs. Suitably, the detachable bearing plate is adapted to allow a tube to bear upon a matching inner ring rib to allow the vertical force from the tube to induce relatively uniform shear stress over the depth of the reinforcing rbs. Suitably, the detachable bearing plate is adapted to allow a circular tube to bear upon a matching circular inner ring rib to allow the vertical force from the tube to be evenly spread over the depth of the reinforcing ribs. Suitably, the detachable bearing plate is adapted to allow a circular tube to bear upon a matching circular inner ring rib to allow the vertical force from the tube to induce relatively uniform shear stress over the depth of the reinforcing ribs. Suitably, the detachable bearing plate is adapted to aflow a scaffold tube to bear upon a matching circular inner ring rib to allow the vertical force from the tube to be evenly spread over the depth of the reinforcing ribs. Suitably, the detachable bearing plate is adapted to allow a scaffold mbe to bear upon a matching circular inner ring rib to allow the vertical force from the tube to induce relatively uniform shear stress over the depth of the reinforcing ribs.
Suitably, the detachable bearing plate has an inner ring rib with inside horizontal dimensions that are a little larger than the outside horizontal dimensions of the matching protruding collar so that when not in use the base plates can be stacked one upon the other for compact storage. Suitably, the detachable bearing plate has an inner circular ring rib with inside horizontal diameter that is a litde larger than the outside circular diameter of the matching protruding collar so that when not in use the base plates can be stacked one upon the other for compact storage.
Suitably, the detachable bearing plate has an inner ring rib with inside face cut away over a vertical height sufficient to accommodate the vertical height of the matching protruding collar so that when not in use the base plates can be stacked one upon the other for compact storage. Suitably, the detachable bearing plate has an inner circular ring rib with inside face cut away over a vertical height sufficient to accommodate the vertical height of the matching protruding circular collar so that when not in use the base plates can be stacked one upon the other for compact storage.
Suitably. the detachable structural bearing plate comprises a continuous bottom flange plate reinforced with upstanding ribs to more effectively distribute the concentrated vertical force from a structural tube. Suitably, the detachable structural bearing plate comprises a continuous circular bottom flange plate reinforced with upstanding ribs to more effectively distribute the concentrated vertical force from a circular structural tube.
Suitably, the detachable structural bearing plate comprises a continuous circular bottom flange plate reinforced with upstanding ribs to more effectively distribute the concentrated vertical force from a scaffold tube.
Suitably. the detachable structural bearing plate comprises a continuous top flange plate reinforced with downstanding ribs to more effectively distribute the concentrated vertical force from a structural tube. Suitably, the detachable structural bearing plate comprises a continuous circular top flange plate reinforced with downstanding ribs to more effectively distribute the concentrated vertical force from a circular structural tube.
Suitably, the detachable structural bearing plate comprises a continuous circular top tiange plate reinforced with downstanding ribs to more effectively distribute the concentrated vertical force from a scaffold tube.
Suitably, the detachable structural bearing plate comprises upstanding or downstanding ribs orientated to follow the directions of principal stress. Suitably, the detachable structural bearing plate is circular and comprises upstanding or downstauding radial and hoop ribs. Suitably. the detachable structural bearing plate is circular and comprises upstanding or downstanding ribs orientated to form contra-directional spirals.
Suitably, the detachable structural bearing plate normally comprises upstanding ribs and a bottom flange plate to provide even spread of bearing force when founded on soft ground. Suitably, the detachable structural bearing plate normally comprises downstanding ribs and a top flange plate to provide even spread of bearing force when founded on hard possibly uneven ground.
Suitably, the detachable structural bearing plate comprises upstanding or downstanding ribs whose depth maybe varied to produce more uniform levels of principal stress.
Suitably, the detachable structural bearing plate is circular and comprises upstanding or downstanding radial and hoop ribs whose depth may be varied to produce more uniform levels of principal stress. Suitably, the detachaffle structural bearing plate is circular and comprises upstanding or downstanding ribs orientated to follow contra-directional spirals whose depth may be varied to produce more uniform levels of principal stress.
Suitably, the detachable structural bearing plate comprises upstanding or downstanding ribs whose breadth may be varied to produce more uniform levels of principal stress.
Suitably, the detachable structural bearing plate is circular and comprises upstanding or downstanding radial and hoop ribs whose breadth may be varied to produce more uniform levels of principal stress. Suitably, the detachable structural bearing plate is circular and comprises upstanding or downstanding ribs orientated to follow contra-directional spirals whose breadth may be varied to produce more uniform levels of principal stress.
Suitably, the detachable bearing plate has an inner ring with its inside face having vertical ribs in alignment with the radial upstanding or downstanding reinforcing ribs. Suitably, the detachable bearing plate has an inner circular ring rib with inside face having vertical ribs in alignment with the radial upstanding or downstanding reinforcing ribs.
Suitably, the detachable structural bearing plate has overall horizontal dimensions, bottom or top flange plate thickness and reinforcing ribs sized to ensure the bearing stress is as uniform as possible and always less than the bearing capacity of the subgrade.
Suitably. the detachable circular structural bearing plate has overall horizontal diameter, bottom or top flange plate thickness and reinforcing ribs sized to ensure the bearing stress is as unifonn as possible and always less than the bearing capacity of the subgrade.
Suitably, the detachable structural bearing plate comprises a continuous bottom flange plate that may itself have small ribs to more efficiently distribute the bearing pressures back to the adjacent upstanding reinforcing ribs.
Suitably, the detachable structural bearing plate is comprised of a polymerc based resin material with reinforcing fibres randomly orientated to provide it with sufficient strength.
Suitably, the detachable structural bearing plate comprises one or more polymer.
Suitably. the detachable structural bearing plate comprises a polymer resin.
Suitably, the detachable structural bearing plate comprises a polymeric matrix.
Suitably. the detachable structural bearing plate comprises one or more polymer reinforced with fibres.
Suitably, the detachable structural bearing plate comprises one or more polymer binding fibres together.
Suitably, the detachable structural bearing plate comprises a polymer matrix binding fibres together.
Suitably, the detachable structural bearing plate comprises a polymeric matrix binding fibres together.
Suitably, the detachable structural bearing plate comprises a fibre reinforced polymer in which the polymer forms a matrix binding fibres together.
Suitably, the detachable structural bearing plate has reinforcing fibres comprising one or more of: g'ass fibres, aramid fibres, boron fibres, natural fibres, carbon fibres. For example the fibres may comprise c-glass or s-glass fibres.
Suitably, the detachable structural bearing plate comprises a single theimoplastic polymeric matrix bonding all the fibres. The detachable structural bearing plate may comprise a single polymer bonding all the fibres.
Suitably. the detachable structural bearing plate comprises a single material that is at macroscopic level homogeneous and isotropic.
Suitably. the detachable structural bearing plate can be manufactured using an injection moulding process. Suitably, an injection moulding manufacturing process can be used for the production of the detachable structural bearing plate.
Suitably, the detachable structural bearing plate is resistant to chemical corrosion.
Suitably, the detachable structural bearing plate has low electrical conductivity. Suitably, the detachable structural bearing plate has low thermal conductivity.
Suitably, the detachable structural bearing plate is adapted to be compatible in a scaffold system comprising metallic tubes. Suitably, the detachable structural bearing plate is adapted to be compatible in a scaffold system comprising composite tubes. For example, the detachable structural bearing plate is particularly suited to scaffold systems comprising stoob® composite tubes. The detachabfr structural bearing plate may have an outer diameter diameter of the protruding collar compatible for stacking purposes with the inner diameter of a stoob® composite scaffold tube.
The detachable structural bearing plate may be such that it can be used interchangeably with composite tubes, the particular composite tube stoob®, or more conventional steel and aluminium scaffold tubes.
The detachable structural bearing plate may be resistant to the corrosive effects of air and water.
The detachable structural bearing plate may be resistant to the effects of chemical and biological attack. The detachable structural bearing plate may consequently be attractive for use in corrosive marine and industrial environments. The detachable structural bearing plate may be resistant to corrosion and can provide a much more effective foundation footing in hostile chemical and marine environments.
The detachable structural bearing plate may be resistant to even quite hostile working environments which may allow its safe use to be extended to periods measured in decades rather than years, The detachable structural bearing plate maybe an insulator to electricity and may reduce the risk of accidental electrocution for all those working with and on for example the scaffokl structure. The detachable structural bearing plate may be an insulator to electricity preventing electric current from being earthed. Consequently the risk of accidental electrocution even on metal scaffold structures is greatly reduced.
The detachable structural bearing plate may have low specific heat capacity and may consequently be comfortable to handle in extremes of hot and cold weather.
The detachable structural bearing plate may be constructed from high strength and stiffness fibres integrally embedded in a thermoplastic polymeric resin.
The detachable structural bearing plate may be provided with variously coloured pigments. The detachable structural bearing plate may have colours chosen to suite a particular client. The detachable structural bearing plate may be coloured to represent a particular form of use.
The detachable structural bearing plate may be electromagnetic interference neutral, The detachable structural bearing plate is made from a material of low density but high strength. This means that the bearing plates can be made considerably lighter than the metallic equivalents; transport and handling are therefore much easier.
Suitably. the detachable structural bearing plate is a footing for a scaffold pole.
Suitably, the scaffold footing is circular in form and has overlapping contra-directional spiral rib reinforcement. Suitably. the scaffold footing is circular in form and has a combination of radial and hoop rib reinforcement.
Suitably, the protruding collar of the scaffold footing has an outer radius of R1 of between and 50mm. suitably between 15 and 25mm, for example 19mm.
Suitably, the protruding collar of the scaffold footing has a wall thickness T1 of between 1 and 10mm, suitably between 2 and 8mm, for example 4mm.
Suitably. the protruding collar of the scaffold footing has a depth D1 of between 5 and 15mm, suitably between 8 and 12mm, for example 10mm.
Suitably, the inner ring of the scaffold footing has an iirner radius R2 of between 10 and 50mm, suitably between 15 and 25mm, for example 20mm, Suitably. the inner ring of the scaffold footing has a depth D2 of between 5 and 30mm, suitably between 10 and 20mm, for example 16mm.
Suitably, the inner ring of the scaffold footing has a wall thickness T2 of between 1 and 10mm, suitably between 2 and 8mm, for example 6mm.
Suitably, the inner ring of the scaffold footing has its inner cylindrical wall cut away over a height D1 + E to form a new cylindrical surface where E is the tolerance between 0.5 and 2mm, suitably between 0.75 and 1.5mm, for example 1mm.
Suitably, the inner ring of the scaffold footing has its inner cylindrical wall cut away over a height D1 + E to form new cylindrical surface of radius R1 + B where B is the tolerance between 0.5 and 2mm, suitably between 0.75 and 1.5mm, for example 1mm.
Suitably. the inner ring of the scaffold footing has its inner cylindrical wall of radius R1 + E cut with slots of height D1 -4-E where E is the tolerance between 0.5 and 2mm. suitably between 0.75 and 1.5mm. for example 1mm.
Suitably, the inner ring of the scaffold footing has its inner cylindrical wall of radius R1 + E cut with slots of depth D8 between 0.5 and 5mm, suitably between I and 2mm, for
example 1,5mm.
Suitably, the inner ring of the scaffold footing has between the vertical slots on the inner cylindrical wall of radius R1 -f E a series of axial ribs of thickness T5 chosen to be equal in thickness T4 and directly aligned to the radial upstanding or downstanding ribs.
Suitably. the outer ring of the scaffold footing has an outer radius R3 of between 25 and 200mm, suitably between 50 and 150mm, for example 100mm.
Suitably. the outer ring of the scaffold footing has a depth D of between 5 and 30mm, suitably between 10 and 20mm, for example 16mm.
Suitably, the outer ring of the scaffold footing has a wall thickness T3 of between 1 and 10mm, suitably between 2 and 8mm, for example 4mm.
Suitably, the radial or spiral ribs of the scaffold footing have a depth D4 of between 5 and 30mm, suitably between 10 and 20mm, for example 16mm, Suitably. the radial or spiral ribs of the scaffold footing have a wall thickness T4 of between 1 and 10mm, suitably between 2 and 8mm, for example 4mm.
Suitably, the scaffold footing has uniformly spaced radial or spiral ribs with a pitch 04 between 10 and 30 degrees, suitable between 15 and 25 degrees, for example 22.5 degrees.
Suitably, the hoop ribs of the scaffold footing have a depth D6 = B7 of between 5 and 30mm, suitably between 10 and 20mm, for example 16mm, Suitably, the hoop ribs of the scaffold footing have a wall thickness T6=T7 of between i and 10mm, suitably between 2 and 8mm, for example 4mm.
Suitably, the top or bottom flange plate of the scaffold footing have a wafl thickness Ic of between 1 and 10mm, suitably between 2 and 6mm, for example 4mm.
Suitably, the scaffold footing comprises thermoplastic polyvinylchloride (PVC) polymer.
Suitably, the scaffold footing comprises thermoplastic polyvinylehloride (PVC) resin.
Suitably, the scaffold footing comprises thermoplastic polyarnide (PA) polymer. Suitably, the scaffold footing comprises thermoplastic polyamide (PA) resin.
Suitably. the scaffold footing comprises thermoplastic polyimide (P1) polymer. Suitably.
the scaffold footing comprises thermoplastic polyimide (F!) resin.
Suitably, the scaffold footing comprises thennoplastic polyamide-imide (PAl) polymer.
Suitably. the scaffold footing comprises thermoplastic polyamide-imide (PAT) resin.
Suitably, the scaffold footing comprises thermoplastic polyothylene terephthalate (PET) polymer. Suitably, the scaffold footing comprises thennoplastic polyothylene terephthalate (PET) resin.
Suitably, the scaffold footing comprises thermoplastic polyphenylene (SRP) polymer.
Suitably, the scaffold footing comprises thermoplastic polyophenylene (SRP) resin.
Suitably, the scaffold footing comprises thermoplastic polyarylether ketone (PEAK) polymer. Suitably, the scaffold footing comprises thermoplastic polyarylether ketone (PEAK) resin.
Suitably. the scaffold footing comprises between 0 and 70% fibre by weight. Suitably, the detachable scaffold coupler collar comprises between 20 and 60% fibre by weight. For example. the detachable structural bearing plate may comprise 50% by weight of fibre.
Suitably, the detachable structural bearing plate comprises between 0 and 70% glass fibre by weight. Suitably, the detachable scaffold coupler collar comprises between 20 and 60% glass fibre by weight. For example, the detachable structural bearing plate may comprise 50% by weight of glass fibre.
BRIEF DESCRIPTION OF DRAWINGS
The present invention will now be illustrated by way of example with reference to the accompanying drawings in which: Figure 1 shows a plan from above or below of the detachable bearing plate having contra-directional spiral ribs; Figure 2 shows a plan from above or below of the detachable bearing plate having radial and concentric hoop ribs; Figure 3 shows a vertical section A-A through the detachable bearing plate having spiral upstanding nbs; Figure 4 shows a vertical section B-B through the detachable bearing plate having spiral upstanding ribs; Figure 5 shows a horizontal section C-C through the lower portion of the inner ring rib; Figure 6 shows a vertical section B-B through the detachable bearing plate having spiral upstanding ribs that taper linearly towards the outer ring rib; Figure 7 shows a vertical section D-D through the detachable bearing plate having radial and concentric hoop downstanding ribs;
DETAILED DESCRIPTION OF PREFERRED ENBODIMENTS
Figure 1 shows a plan from above or below of the detachable bearing plate having contra-directional spiral ribs. In this embodiment the protruding cylindrical collar (I) has a nominal thickness T1=4mrn, depth D1=lOmm and outer radius R1=l9mm. The inner ring rib (2) has a nominal thickness T2=ômm. depth D2= 16mm and inner radius R2=2Omm that allows the outer radius of the cylindrical collar to be inserted for stacking purposes during storage. The outer ring rib (3)has a nominal thickness T3=4mm. depth D3=lômm or 4mm and outer radius R3=lOOmm. The spiral ribs (4) have in this particular embodiment a thickness T4=4mm, depth D4=l6mm or varying from 16 to 4mm. a mid-thickness radius R4=SOrnm, and a pitch of 04= 22.5 degrees. The inner ring rib (2), the outer ring rib (3) and the spiral rbs (4) are all integrally connected to either a bottom or top flange plate (5), Where they abut one with the other the protruding cylindrical collar (.1), the inner ring rib (.2), the outer ring rib (3) and the spiral ribs (4) are all integrally connected one to the other. The inner ring has its cylindrical wall penetrated by vertical slots (8) of depth D8=1.Smm to provide a series of axial ribs having a thickness of T5=4mrn to align with the spiral ribs emerging from the outside radius of the inner ring.
Figure 2 shows a plan from above or below of the detachable bearing plate having radial and concentric hoop ribs. In this embodiment the protruding cylindrical collar (I) has a nominal thickness 11=4mm, depth D1=IOmrn and outer radius R1=I9mni. The inner ring rib (2) has a nominal thickness T2=ômin, depth D2=lômm and inner radius R2=2Omm that allows the outer radius of the cylindrical collar to be inserted for stacking purposes during storage. The outer ring rib (3) has a nominal thickness T3=4mm, depth D3=l6mm or 4mm and outer radius R3=l0Omm. The radial ribs (4) have in this particular embodiment a thickness T4=4mm, depth D4=l6mm or varying from 16 to 4mm and a pitch of 04= 22.5 degrees. The inner ring rib (2), the outer ring rib (3), the radial ribs (4) and the concentric hoop ribs (5) and (6) are all integrally connected to either a bottom or top flange plate (5). Where they abut one with the other the protruding cylindrical collar (1). the inner ring rib (2), the outer ring rib (3), the radial ribs (4) and the concentric hoop ribs (5) and (6) are all integrally connected one to the other. The inner ring has its cylindrical wall penetrated by vertical slots (8) of depth D5= 1.5mm to provide a series of axial ribs having a thickness of T8=4mm to align with the radial ribs emerging from the outside radius of the inner ring.
Figure 3 shows a vertical section A-A through the detachable bearing plate having spiral upstanding ribs. The protruding cylindrical collar (1) has a nominal thickness T1=4mm, depth D1=lOmm and outer radius R1=l9mm. The inner ring rib (2) has a nominal thickness T=6mm, depth D2=l6mm and inner radius R2=2Omm that allows the outer radius of the cylindrical collar to be inserted for stacking purposes during storage. The outer ring rib (3) has a nominal thickness T:=4mm, depth D3=l6mm and outer radius R3=IOOmm. The spiral ribs (4) have in this particular embodiment a thickness T4=4mm.
constant depth D4=l6mm, and a pitch of 04= 22.5 degrees. The inner ring rib (2), the outer ring rib (3) and the spiral ribs (4) are all integrally connected to a bottom flange plate (5). Where they abut one with the other the protruding cylindncal collar (1), the inner ring rib (2), the outer ring rib (3) and the spiral ribs (4) are all integrally connected I0 one to the other. The inner ring has its cylindrical wall penetrated by vertical slots (8) of depth Dg=1.Snirn to provide a series of axial ribs having a thickness of Tg=4mm to align with the spiral ribs emerging from the outside radius of the inner nng.
Figure 4 shows a vertical section B-B through the detachable bearing plate having spiral upstanding ribs. The protruding cylindrical collar (I) has a nominal thickness Tj=4mm, depth D=10mm and outer radius R1=l9mm. The inner ring rib (2) has a nominal thickness T2=6mni, depth D2= 16mm and inner radius R2=2Omm that allows the outer radius of the cylindrical collar to be inserted for stacking pm-poses during storage. The outer ring rib (3) has a nominal thickness T3=4mm, depth D3=l6mm and outer radius R3=lOOmm. The spiral ribs (4) have in this particular embodiment a thickness T4=4mm, constant depth D4=l6mm. and a pitch of 04= 22.5 degrees. The inner ring rib (2), the outer ring rib (3) and the spiral ribs (4) are all integrally connected to a bottom flange plate 5). Where they abut one with the other the protruding cylindrical collar (1), the inner ring rib (2), the outer ring rib (3) and the spiral ribs (4) are all integrally connected one to the other. The inner ring has its cylindrical wall penetrated by vertical slots (8) of depth D5=l.Snirn to provide a series of axial ribs having a thickness of T5=4mm to align with the spiral ribs emerging from the outside radius of the inner ring.
Figure 5 shows a horizontal section C-C through the lower portion of the inner ring rib.
The inner ring rib (2) of thickness T2=6mm has the spiral or radial iibs (4) aligned with and of equal thickness to the inner ribs formed by the vertical slots (8) having depth D8=I.5mm..
Figure 6 shows a vertical section B-B through the detachable bearing plate having spiral upstanding ribs that taper linearly towards the outer ring rib. The protruding cylindrical collar (1) has a nominal thickness T1=4mm, depth D1=lOmm and outer radius R1=l9mm.
The inner ring rib (2) has a nominal thickness T2=6rnm, depth D2=l6mm and inner radius R2=2Omrn that allows the outer radius of the cylindr cal collar to be inserted for stacking purposes during storage. The outer ring rib (3) has a nominal thickness 13=4mm, depth D3=l6nirn and outer radius R3=lOOnirn. The spiral ribs (4) have in this particular embodiment a thickness T44mm, a pitch of 04= 22.5 degrees and a depth varying from D4= 16mm at the inner ring rib (2) to D4=4mm at the outer ring rib (3). The inner ring rib (2), the outer ring rib (3) and the spiral ribs (4) are all integrally connected to a bottom flange plate (5). Where they abut one with the other the protruding cyiindrical collar (I).
the inner ring rib (2), the outer ring rib (3) and the spiral ribs (4) are all integrally connected one to the other. The inner ring has its cylindrical wall penetrated by vertical slots (8) of depth D8=t.5mm to provide a series of axial ribs having a thickness of T5=4mm to align with the spiral rbs emerging from the outside radius of the inner ring.
Figure 7 shows a vertical section D-D through the detachable bearing plate having radial and concentric hoop downstanding ribs. The protruding cylindrical collar (1) has a nominal thickness T1=4mrn, depth D1=lOmm and outer radius R1=l9mm. The inner ring rib (2)has a nominal thickness T2=6mm, depth 02=I6mm and inner radius R2=2Omm
II
that allows the outer radius of the cylindrical collar to be insefted for stacking purposes during storage. The outer ring rib (3) has a nominal thickness T7=4rnm, depth 1D3=l6mm and outer radius R:=1OOmrn. The radial ribs 4) have in this particular embodiment a thickness T4=4mm, constant depth D4=l6mm, and a pitch of O= 22.5 degrees. The ring ribs (6) and (7) have in this particular embodiment a thickness Ts=T6=4rnrn, depth D= 16mm, and respectively radii of R.= 48.6mm and R6= 72.2mm. The inner ring rib (2), the outer ring rib (3), the radial ribs (4), the ring ribs (5) and (6) are all integrally connected to a bottom flange plate (5). Where they abut one with the other the protruding cylindric1 collar (I), the inner ring rib (2), the outer ring rib (3) and the radial ribs (4) and the concentric ring ribs (5) and (6) are all integrally connected one to the other. The inner ring has its cylindrical wall penetrated by vertical s'ots (8) of depth D8=l.5mm to provide a series of axial ribs having a thickness of T8=4mm to align with the spiral ribs emerging from the outside radius of the inner ring, l,'.
Claims (32)
- CLAIMS: 1. A structural bearing plate wholly comprising fibre reinforced polymer with a network of integrally cast ribs to permit efficient transfer of a concentrated vertical load into a more evenly loaded foundation subgrade.
- 2. A structural bearing plate according to claim 1 wherein suitable rib networks provide a structurally efficient means of converting a concentrated vertical load fmm a polygonal or rectangular tube into a more even foundation bearing pressure.
- 3. A structural bearing plate according to claim I wherein a combination of ring ribs and spiral ribs provides a structurally efficient means of converting a concentrated vertical load from circular tubes into a more even foundation bearing pressure.
- 4. A structural bearing plate according to claim 1 wherein a combination of ring ribs and radial ribs provides a structurally efficient means of converting a concentrated vertical load from circular tubes into a more even foundation bearing pressure.
- 5. A structural bearing plate according to claim 1 wherein a combination of ring ribs and spiral or radial ribs provides a structurally efficient means of converting a concentrated vertical load from scaffold tubes into a more even foundation bearing pressure,
- 6. A structural bearing plate according to any preceding claims wherein a network of reinforcing ribs is integrally connected to either a top or bottom flange to provide a structurally efficient means of converting a concentrated vertical load into a more even foundation bearing pressure.
- 7. A structural bearing plate according to any preceding claims wherein a combination of ring nbs and spiral ribs is integrally connected to either a top or bottom flange to provide a structurally efficient means of converting a concentrated vertical load into a more even foundation bearing pressure.
- 8. A structural bearing plate according to any preceding daims wherein a combination of ring ribs and radial ribs is integrally connected to either a top or bottom tiange to provide a structurally efficient means of converting a concentrated vertical load into a more even foundation bearing pressure.
- 9. A structural bearing plate according to any preceding claims wherein a polygonal structural tube may be slotted over a matching protruding collar to prevent horizontal movement of the structural tube at its base.
- 10. A structural bearing plate according to any preceding claims wherein a rectangular or square structural tube may be slotted over a matching protruding collar to prevent horizontal movement of the structural tube at its base.
- 11. A structural bearing plate according to any preceding claims wherein a circular structural tube may be slotted over a matching protruding collar to prevent horizontal movement of the structural tube at its base.
- 12. A structural bearing plate according to any preceding claims wherein a circular scaffold tube may be slotted over a matching protruding collar to prevent horizontal movement of the structural tube at its base.
- 13. A structural bearing plate according to any preceding claims wherein a polygonaL rectangular or circular tube, including circular scaffold tubes, may be conveniently place beneath the tube to provide an effective means of distributing the vertical load into the foundation.
- 14. A structural bearing plate according to any preceding claims wherein a polygonal.rectangular or circular tube, including circular scaffold tubes, bears upon a matching inner nng connected to a network of reinforcing ribs.
- 15. A structural bearing plate according to any preceding claims wherein the network of reinforcing ribs act together with an integral top or bottom flange plate.
- 16. A structural bearing plate according to any preceding claims wherein the composite web and flange provided by the reinforcing ribs and top or bottom flange plates allow efficient spatial distribution of the vertical load.
- 17. A structural bearing plate according to any preceding claims wherein the reinforcement ribs may be varied in depth to provide more efficient transfer of the concentrated vertical load into the uniform foundation bearing pressure.
- 18. A structural bearing plate according to any preceding claims wherein the reinforcement ribs may be varied in thickness to provide more efficient transfer of the concentrated vertical load into the uniform foundation bearing pressure.
- 19. A structural bearing plate according to any preceding claims wherein the top or bottom tiange plate may be varied in thickness to provide more efficient transfer of the concentrated vertical load into the uniform foundation bearing pressure.
- 20. A structural bearing plate according to any preceding claims wherein the combination of integrally connected top or bottom flange plate and rib reinforcement may be varied in depth to provide more efficient transfer of the concentrated vertical load into the uniform foundation bearing pressure.
- 21. A structural bearing plate according to any preceding claims wherein the combination of integrally connected top or bottom flange plate and rib reinforcement may be varied in depth to provide a least weight solution for the transfer of the concentrated vertical load into the uniform foundation bearing pressure.
- 22. A structural bearing plate according to any preceding claims wherein the combination of integrally connected top or bottom flange plate and rib reinforcement may have wall thickness minirnised to allow efficient injection moulding.
- 23. A structural bearing plate according to any preceding claims wherein a polygonal protruding coflar can be slotted into a matching polygonal inner wall of an inner reinforcing ring rib to allow efficient stacking.
- 24. A structural bearing plate according to any preceding daims wherein a rectangular protruding collar can be slotted into a matching rectangular inner wall of an inner reinforcing ring rib to aflow efficient stacking.
- 25. A structural bearing plate according to any preceding claims wherein a circular protruding collar can be slotted into a matching circular inner wall of an inner reinforcing ring rib to allow efficient stacking.
- 26. A structural bearing plate according to any preceding claims wherein the bottom flange plate provides an effective footing when the structural tubes are founded on soft ground.
- 27. A structural bearing plate according to any preceding dairns wherein a top flange plate allows downwardly directed ribs to provide an effective footing when the structural tubes are founded on hard non-compliant suifaces.,
- 28. A structural bearing plate according to any preceding claims wherein the inner wall of the ring rib beneath the base of the structural tube is provided with vertical slots to keep the maximum wall thickness to a minimum.
- 29. A structural bearing plate according to any preceding claims wherein the inner wall of the ring rib beneath the base of the structural tube is provided with vertical ribs to ensure adequate structural strength..
- 30. A structural bearing plate according to any preceding daims wherein the inner wall of the ring rib beneath the base of the structural tube is provided with vertical ribs with wall thickness no greater than the other components to ensure efficient infection moulding.
- 31. A structural bearing plate according to any preceding claims wherein all the constituent components are cast integrally using an injection moulding process.
- 32. A structural bearing plate according to any preceding claims wherein all the constituent components have wall thickness kept to a minimum consistent with providing adequate strength to ensure an efficient injection moulding manufacturing process.IS33. A structural bearing p'ate according to any preceding claims wherein all the constituent components are made from a fibre reinforced thermoplastic resin suitable for efficient injection moulding.34. A structural bearing plate according to any preceding daims wherein all the constituent components are made from a fibre reinforced thermoplastic resin suitable for attaining adequate structural strength. !6
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1303770.0A GB2515250B (en) | 2013-03-04 | 2013-03-04 | Composite bearing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1303770.0A GB2515250B (en) | 2013-03-04 | 2013-03-04 | Composite bearing plate |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201303770D0 GB201303770D0 (en) | 2013-04-17 |
| GB2515250A true GB2515250A (en) | 2014-12-24 |
| GB2515250B GB2515250B (en) | 2022-03-02 |
Family
ID=48142325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1303770.0A Active GB2515250B (en) | 2013-03-04 | 2013-03-04 | Composite bearing plate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2515250B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2552708A (en) * | 2016-08-04 | 2018-02-07 | Dudhia Rukshana | Temporary foundation for temporary structures |
| US11891825B2 (en) * | 2018-10-02 | 2024-02-06 | Independence Materials Group, Llc | Apparatus for supporting overhead structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992011427A1 (en) * | 1990-12-24 | 1992-07-09 | Christopher Sean Jennings | Support element |
| US5419524A (en) * | 1993-03-12 | 1995-05-30 | Evans; Leonard W. | Weight distribution pad for trailers |
| JPH08312130A (en) * | 1995-03-14 | 1996-11-26 | Ikatsu:Kk | Holding planking for scaffolding |
| WO2001042590A2 (en) * | 1999-12-06 | 2001-06-14 | Portable Pipe Hangers, Inc. | Support base and adjustable support post for installation on a rooftop |
| GB2361739A (en) * | 2000-04-28 | 2001-10-31 | Martin Humphries | Plastic floor protector shoe for foot plate of load bearing vertical member such as scaffolding |
| US20080016795A1 (en) * | 2006-07-11 | 2008-01-24 | George Glen R | Footing form for upright structural members of buildings |
| DE202010004904U1 (en) * | 2010-04-12 | 2010-07-29 | Wilhelm Layher Verwaltungs-Gmbh | Bearing compensation device for the storage area of a scaffolding construction, a scaffold post or a foot spindle |
-
2013
- 2013-03-04 GB GB1303770.0A patent/GB2515250B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992011427A1 (en) * | 1990-12-24 | 1992-07-09 | Christopher Sean Jennings | Support element |
| US5419524A (en) * | 1993-03-12 | 1995-05-30 | Evans; Leonard W. | Weight distribution pad for trailers |
| JPH08312130A (en) * | 1995-03-14 | 1996-11-26 | Ikatsu:Kk | Holding planking for scaffolding |
| WO2001042590A2 (en) * | 1999-12-06 | 2001-06-14 | Portable Pipe Hangers, Inc. | Support base and adjustable support post for installation on a rooftop |
| GB2361739A (en) * | 2000-04-28 | 2001-10-31 | Martin Humphries | Plastic floor protector shoe for foot plate of load bearing vertical member such as scaffolding |
| US20080016795A1 (en) * | 2006-07-11 | 2008-01-24 | George Glen R | Footing form for upright structural members of buildings |
| DE202010004904U1 (en) * | 2010-04-12 | 2010-07-29 | Wilhelm Layher Verwaltungs-Gmbh | Bearing compensation device for the storage area of a scaffolding construction, a scaffold post or a foot spindle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2552708A (en) * | 2016-08-04 | 2018-02-07 | Dudhia Rukshana | Temporary foundation for temporary structures |
| US11891825B2 (en) * | 2018-10-02 | 2024-02-06 | Independence Materials Group, Llc | Apparatus for supporting overhead structure |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2515250B (en) | 2022-03-02 |
| GB201303770D0 (en) | 2013-04-17 |
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|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) | ||
| S20A | Reinstatement of application (sect. 20a/patents act 1977) |
Free format text: REQUEST FOR REINSTATEMENT ALLOWED Effective date: 20170208 |