US20230417072A1 - Thermally Insulated Tilt-Up Wall Lift and Brace Assemblies - Google Patents
Thermally Insulated Tilt-Up Wall Lift and Brace Assemblies Download PDFInfo
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- US20230417072A1 US20230417072A1 US17/850,336 US202217850336A US2023417072A1 US 20230417072 A1 US20230417072 A1 US 20230417072A1 US 202217850336 A US202217850336 A US 202217850336A US 2023417072 A1 US2023417072 A1 US 2023417072A1
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- base plate
- anchor assembly
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- layered structure
- insulating panel
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- 238000000429 assembly Methods 0.000 title description 6
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000009413 insulation Methods 0.000 claims abstract description 22
- 239000010410 layer Substances 0.000 claims description 83
- 239000012790 adhesive layer Substances 0.000 claims description 12
- 239000004593 Epoxy Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- -1 double-sided tape Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 description 14
- 239000011800 void material Substances 0.000 description 6
- 239000004567 concrete Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 239000004794 expanded polystyrene Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
-
- 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
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/04—Cores for anchor holes or the like around anchors embedded in the concrete
-
- 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
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
- E04G21/185—Means for positioning building parts or elements for anchoring elements or elements to be incorporated in the structure
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B2001/4192—Connecting devices specially adapted for embedding in concrete or masonry attached to concrete reinforcing elements, e.g. rods or wires
Definitions
- the present disclosure relates to elements for use as embedded in layered structures. More particularly, the present disclosure relates to lift and brace inserts for installation in layered concrete structures during fabrication without forming thermal bridges.
- Lifting anchors are commonly embedded or cast in the precast concrete structures to facilitate handling, since these structures can be difficult to hoist and handle due to their weight.
- Brace inserts are also typically embedded to provide attachments points along a wall to mount other structural elements. Typical lifting anchors and brace inserts form thermal bridges.
- an anchor assembly is configured to be embedded in a layered structure.
- the anchor assembly includes a base plate comprising a first side and a second side opposite the first side, an anchor member connected to the first side of the base plate, and a thermally insulating panel attached to the second side of the base plate.
- An adhesive layer may be provided between the thermally insulating panel and the second side of the base plate, the adhesive layer attaching the thermally insulating panel to the second side of the base plate.
- the adhesive layer may include epoxy, glue, double-sided tape, and/or an adhesive pad.
- the anchor member may define, at least in part, a loop for attachment to a lift device for lifting the layered structure.
- the anchor member may include an arch and two legs extending from the arch to the base plate, the two legs attached to the base plate.
- the two legs, arch, and base plate may cooperatively define the loop.
- the assembly may include at least one connector bar for attaching the anchor assembly to a mesh in a layered structure, the connector bar having a first section connected to the first side of the base plate and opposing end sections connected to the first section, the end sections for tying to the mesh.
- the anchor member may include a post connected to the base plate, the post having an upper end defining a ferrule with a threaded interior.
- the assembly may include at least one connector bar for attaching the anchor assembly to a mesh in a layered structure, the connector bar connected to the post spaced from the base plate.
- the thermally insulating panel may include foam.
- a layered structure includes: a first layer of cementitious material; an insulation layer positioned on the first layer of cementitious material, the insulating layer having an opening defining a receiving space; and an anchor assembly positioned in part in the receiving space.
- the anchor assembly includes a base plate having a first side and a second side opposite the first side, an anchor member connected to the first side of the base plate, and a thermally insulating panel attached to the second side of the base plate. The thermally insulating panel is positioned on the first layer of cementitious material within the receiving space.
- the insulating panel has a snug fit or interference fit with the opening through the insulation layer.
- the insulating panel and opening may be matched with regard to shape such that the insulating panel covers a surface of the cementitious layer within the receiving space.
- a second cementitious layer may be positioned on the insulation layer, and a plug of cementitious material may fill a remainder of the receiving space not filled by the anchor assembly.
- the layered structure may define a tilt-up wall.
- the insulating pad prevents the plug of cementitious material from reaching the first cementitious layer thus preventing a thermal bridge from forming between the first cementitious layer and second cementitious layer.
- the second cementitious layer may have a surface below which the anchor member is sunken.
- FIG. 1 is a perspective view of a thermally insulated lifting anchor assembly according to at least one embodiment.
- FIG. 2 is an elevation view of the anchor assembly of FIG. 1 .
- FIG. 3 is a view of the anchor assembly as in FIG. 2 , shown with an adhering layer expanded for illustration.
- FIG. 4 is a perspective view of an anchor member of the assembly of FIG. 1 , according to at least one embodiment.
- FIG. 5 is a connector bar of the anchor assembly of FIG. 1 , according to at least one embodiment.
- FIG. 6 is a cross-section view of an incomplete layered structure, representing a stage in its fabrication before placement of the anchor assembly of FIG. 1 .
- FIG. 7 is a cross-section view as in FIG. 6 , shown with the anchor assembly of FIG. 1 placed in a receiving space, representing a subsequent stage of fabrication of the layered structure.
- FIG. 8 is a perspective view of a mesh placed over the anchor assembly of FIG. 1 .
- FIG. 9 is a cross-sectional view representing a fabrication stage subsequent to FIG. 7 , shown with the anchor assembly engaged with and supporting the mesh of FIG. 8 .
- FIG. 10 is a cross-sectional view of a portion of a complete fabricated structure with the anchor assembly of FIG. 1 embedded.
- FIG. 12 is a plan view of the thermally insulated brace anchor assembly of FIG. 11 .
- FIG. 13 is a cross-sectional view of a portion of a complete fabricated structure with the anchor assembly of FIG. 11 embedded.
- FIGS. 1 - 3 A thermally insulated lifting anchor assembly 10 , according to at least one embodiment, is shown in FIGS. 1 - 3 .
- the anchor assembly 10 is embedded in a layered host structure having a central insulation layer sandwiched between cementitious layers.
- the anchor assembly 10 provides a lift point in such a layered host structure when complete with the cementitious layers cured.
- cementitious fill material is poured and allowed to cure to form the cementitious layers, which are maintained as horizontal until cured.
- the fabricated structure in an expected use is then lifted and tilted to a vertical disposition for use as a wall.
- first poured cementitious layer can be termed for purpose of description as a bottom or lower layer referring to its disposition during stages of fabrication. Accordingly, an insulation layer set upon the first layer can be termed as above the lower layer, and a second cementitious poured upon the insulation layer can be termed a top or upper layer, at least during fabrication of the structure.
- inventive anchor assembly 10 are similarly described herein using such terms as up and down, top and bottom, and upper and lower for descriptive convention. Such terms are to be understood in the context of the fabrication stages of a structure, and not necessarily its final disposition in use, for example, as a wall of a building.
- the inventive anchor assemblies described in the following are used in host structures such as tilt-up walls, which can typically be fabricated on-site as a building is constructed.
- host structures such as tilt-up walls, which can typically be fabricated on-site as a building is constructed.
- host structures when fabricated, typically have an expanded polystyrene (EPS) foam insulating core between two rebar reinforced cementitious layers, such as concrete.
- EPS expanded polystyrene
- the anchor assembly 10 includes an anchor member 12 ( FIG. 4 ), a void forming shell 44 ( FIG. 1 ) enclosing a top portion of the anchor member, and a base plate 60 to which the anchor member 12 is attached.
- the lifting anchor assembly 10 includes a thermally insulating panel 70 by which, at least, the thermally insulated lifting anchor assembly 10 is novel and non-obvious over prior-art anchor assemblies.
- the novel lifting anchor assembly 10 further includes connector bars 80 for connection to a mesh embedded in a cast top layer in a fabricated host structure.
- the anchor member 12 provides structural reinforcement and support to lift a layered structure.
- the lifting anchor assembly 10 is embedded, with a loop 14 ( FIG. 4 ) being accessible as an attachment point by which the structure can be hoisted, for example as further described and illustrated in U.S. Pat. No. 10,837,185, which is incorporated herein by reference.
- the anchor member 12 may be made of a sufficiently strong and rigid material, such as a metal. Non-limiting examples include steel and aluminum alloy.
- the loop 14 is defined cooperatively by the anchor member 12 and base plate 60 , which is represented in dashed line in FIG. 4 .
- the diagonal sections 84 extend at angles to diverge from each other, and end sections 86 of the bars 80 are parallel to each other and collinear with each other, having respective termini 88 ( FIG. 5 ) extending in opposite directions from each other.
- Two connector bars 80 are shown in drawings, each being connected, by its respective lower linear section 82 , to the base plate 60 proximate and parallel to a respective edge of the plate 60 opposite the other bar 80 .
- the shell 44 thus forms a protected and essentially sealed enclosure around the loop 14 of the anchor member 12 , preventing cementitious material from obstructing access to the loop 14 and thus assuring the loop 14 is accessible to receive a lift apparatus or device, such as a hook on a cable or chain, by which a fabricated layered structure can be lifted, transported, and tilted to desired position.
- a lift apparatus or device such as a hook on a cable or chain
- the end sections 86 of the bars 80 extend beyond edges of the base plate 60 and beyond edges of the insulating panel 70 to facilitate material engagement and higher shear strength in a host structure when the structure is lifted by the anchor assembly 10 .
- the anchor assembly 10 by way the height of the upper end sections 86 of the bars 80 above the lower surface of the insulating pad 70 , supports the mesh 120 as spaced from the upper surface 106 ( FIG. 7 ) of the first insulating layer 102 , thereby embedding the mesh 120 a second cementitious layer when poured to meet the top of the void forming shell 44 .
- the upper end sections 86 of the bars 80 are secured to nearby bars 122 of the mesh, for example as tied by wire 126 . This stabilizes the mesh 120 with the anchor assemblies 10 across a wide area structure being fabricated, of which only a portion is represented in FIGS. 6 - 10 .
- An adhesive layer for example such as adhesive layer 62 shown in FIG. 3 with between the plate 60 and insulating pad 70 , may be provided to attach the base plate 260 to the insulting pad 270 , referring to an adhesive material such as epoxy or glue, and a double-sided tape or pad, in non-limiting examples.
- the insulating panel 270 is mounted on and attached to lower second side of the base plate 260 .
- the anchor assembly 210 in such embodiments is thus a single unitary structure for handling and placement purposes.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
Abstract
A layered structure includes a first layer of cementitious material, an insulation layer positioned on the first layer. The insulating layer has an opening defining a receiving space. An anchor assembly is positioned in part in the receiving space. The anchor assembly includes a base plate having a first side and a second side opposite the first side, an anchor member connected to the first side of the base plate, and a thermally insulating panel attached to the second side of the base plate. The thermally insulating panel is positioned on the first layer of cementitious material. The insulating panel has a snug fit or interference fit with the opening through the insulation layer. The insulating panel and opening are matched with regard to shape such that the insulating panel covers a surface of the cementitious layer within the receiving space thus preventing a thermal bridge from forming.
Description
- The present disclosure relates to elements for use as embedded in layered structures. More particularly, the present disclosure relates to lift and brace inserts for installation in layered concrete structures during fabrication without forming thermal bridges.
- Large modern building and structures are often constructed, at least in par, using tilt-up construction, which involves pouring layered concreted walls horizontally on the buildings floor slab at the job site. A crane hoists the cured walls into a place where steel braces and welding can be applied to secure the walls in their final vertical positions. temporarily secure the panels until workers can weld permanent fasteners into the panel's joints, footings, and roofline. The layered walls typically have a thermally insulting core layer. Any elements of the construction, such reinforcing bars that connect the concrete layers sandwiching the core, that conduct thermal energy between interior and exterior walls serve as thermal bridges. Such thermal bridges are to kept at a minimum to conserve energy and costs of heating an cooling a building.
- Lifting anchors are commonly embedded or cast in the precast concrete structures to facilitate handling, since these structures can be difficult to hoist and handle due to their weight. Brace inserts are also typically embedded to provide attachments points along a wall to mount other structural elements. Typical lifting anchors and brace inserts form thermal bridges.
- Improvements are needed in anchors and brace elements to minimize or prevent thermal bridging in layered concrete structures such as tilt-up walls.
- This summary is provided to briefly introduce concepts that are further described in the following detailed descriptions. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it to be construed as limiting the scope of the claimed subject matter.
- According to at least one embodiment, an anchor assembly is configured to be embedded in a layered structure. The anchor assembly includes a base plate comprising a first side and a second side opposite the first side, an anchor member connected to the first side of the base plate, and a thermally insulating panel attached to the second side of the base plate.
- An adhesive layer may be provided between the thermally insulating panel and the second side of the base plate, the adhesive layer attaching the thermally insulating panel to the second side of the base plate.
- The adhesive layer may include epoxy, glue, double-sided tape, and/or an adhesive pad.
- The anchor member may define, at least in part, a loop for attachment to a lift device for lifting the layered structure.
- The anchor member may include an arch and two legs extending from the arch to the base plate, the two legs attached to the base plate. The two legs, arch, and base plate may cooperatively define the loop.
- The assembly may include at least one connector bar for attaching the anchor assembly to a mesh in a layered structure, the connector bar having a first section connected to the first side of the base plate and opposing end sections connected to the first section, the end sections for tying to the mesh.
- The anchor member may include a post connected to the base plate, the post having an upper end defining a ferrule with a threaded interior.
- The assembly may include at least one connector bar for attaching the anchor assembly to a mesh in a layered structure, the connector bar connected to the post spaced from the base plate.
- The thermally insulating panel may include foam.
- In at least one embodiment, a layered structure includes: a first layer of cementitious material; an insulation layer positioned on the first layer of cementitious material, the insulating layer having an opening defining a receiving space; and an anchor assembly positioned in part in the receiving space. The anchor assembly includes a base plate having a first side and a second side opposite the first side, an anchor member connected to the first side of the base plate, and a thermally insulating panel attached to the second side of the base plate. The thermally insulating panel is positioned on the first layer of cementitious material within the receiving space.
- In at least one embodiment, the insulating panel has a snug fit or interference fit with the opening through the insulation layer.
- The insulating panel and opening may be matched with regard to shape such that the insulating panel covers a surface of the cementitious layer within the receiving space.
- A second cementitious layer may be positioned on the insulation layer, and a plug of cementitious material may fill a remainder of the receiving space not filled by the anchor assembly.
- The layered structure may define a tilt-up wall.
- The insulating pad prevents the plug of cementitious material from reaching the first cementitious layer thus preventing a thermal bridge from forming between the first cementitious layer and second cementitious layer.
- The second cementitious layer may have a surface below which the anchor member is sunken.
- The above summary is to be understood as cumulative and inclusive. The above described embodiments and features are combined in various combinations in whole or in part in one or more other embodiments.
- The previous summary and the following detailed descriptions are to be read in view of the drawings, which illustrate some, but not all, embodiments and features as briefly described below. The summary and detailed descriptions, however, are not limited to only those embodiments and features explicitly illustrated.
-
FIG. 1 is a perspective view of a thermally insulated lifting anchor assembly according to at least one embodiment. -
FIG. 2 is an elevation view of the anchor assembly ofFIG. 1 . -
FIG. 3 is a view of the anchor assembly as inFIG. 2 , shown with an adhering layer expanded for illustration. -
FIG. 4 is a perspective view of an anchor member of the assembly ofFIG. 1 , according to at least one embodiment. -
FIG. 5 is a connector bar of the anchor assembly ofFIG. 1 , according to at least one embodiment. -
FIG. 6 is a cross-section view of an incomplete layered structure, representing a stage in its fabrication before placement of the anchor assembly ofFIG. 1 . -
FIG. 7 is a cross-section view as inFIG. 6 , shown with the anchor assembly ofFIG. 1 placed in a receiving space, representing a subsequent stage of fabrication of the layered structure. -
FIG. 8 is a perspective view of a mesh placed over the anchor assembly ofFIG. 1 . -
FIG. 9 is a cross-sectional view representing a fabrication stage subsequent toFIG. 7 , shown with the anchor assembly engaged with and supporting the mesh ofFIG. 8 . -
FIG. 10 is a cross-sectional view of a portion of a complete fabricated structure with the anchor assembly ofFIG. 1 embedded. -
FIG. 11 is a perspective view of a thermally insulated brace anchor assembly according to at least one embodiment. -
FIG. 12 is a plan view of the thermally insulated brace anchor assembly ofFIG. 11 . -
FIG. 13 is a cross-sectional view of a portion of a complete fabricated structure with the anchor assembly ofFIG. 11 embedded. - These descriptions are presented with sufficient details to provide an understanding of one or more particular embodiments of broader inventive subject matters. These descriptions expound upon and exemplify particular features of those particular embodiments without limiting the inventive subject matters to the explicitly described embodiments and features. Considerations in view of these descriptions will likely give rise to additional and similar embodiments and features without departing from the scope of the inventive subject matters. Although steps may be expressly described or implied relating to features of processes or methods, no implication is made of any particular order or sequence among such expressed or implied steps unless an order or sequence is explicitly stated.
- Any dimensions expressed or implied in the drawings and these descriptions are provided for exemplary purposes. Thus, not all embodiments within the scope of the drawings and these descriptions are made according to such exemplary dimensions. The drawings are not made necessarily to scale. Thus, not all embodiments within the scope of the drawings and these descriptions are made according to the apparent scale of the drawings with regard to relative dimensions in the drawings. However, for each drawing, at least one embodiment is made according to the apparent relative scale of the drawing.
- Like reference numbers used throughout the drawings depict like or similar elements. Unless described or implied as exclusive alternatives, features throughout the drawings and descriptions should be taken as cumulative, such that features expressly associated with some particular embodiments can be combined with other embodiments.
- Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which the presently disclosed subject matter pertains. Although any methods, devices, and materials similar or equivalent to those described herein can be used in the practice or testing of the presently disclosed subject matter, representative methods, devices, and materials are now described.
- Following long-standing patent law convention, the terms “a,” “an,” and “the” refer to “one or more” when used in the subject specification, including the claims. Unless indicated to the contrary, the numerical parameters set forth in the instant specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained within the scope of these descriptions.
- A thermally insulated lifting
anchor assembly 10, according to at least one embodiment, is shown inFIGS. 1-3 . As described below, with reference toFIGS. 6-10 for example, in an expected non-limiting use, theanchor assembly 10 is embedded in a layered host structure having a central insulation layer sandwiched between cementitious layers. Theanchor assembly 10 provides a lift point in such a layered host structure when complete with the cementitious layers cured. As the host structure is fabricated, cementitious fill material is poured and allowed to cure to form the cementitious layers, which are maintained as horizontal until cured. The fabricated structure in an expected use is then lifted and tilted to a vertical disposition for use as a wall. Nonetheless, the first poured cementitious layer can be termed for purpose of description as a bottom or lower layer referring to its disposition during stages of fabrication. Accordingly, an insulation layer set upon the first layer can be termed as above the lower layer, and a second cementitious poured upon the insulation layer can be termed a top or upper layer, at least during fabrication of the structure. Features of theinventive anchor assembly 10 are similarly described herein using such terms as up and down, top and bottom, and upper and lower for descriptive convention. Such terms are to be understood in the context of the fabrication stages of a structure, and not necessarily its final disposition in use, for example, as a wall of a building. - In at least one expected use, the inventive anchor assemblies described in the following are used in host structures such as tilt-up walls, which can typically be fabricated on-site as a building is constructed. Such host structures, when fabricated, typically have an expanded polystyrene (EPS) foam insulating core between two rebar reinforced cementitious layers, such as concrete.
- In the illustrated embodiment, the
anchor assembly 10 includes an anchor member 12 (FIG. 4 ), a void forming shell 44 (FIG. 1 ) enclosing a top portion of the anchor member, and abase plate 60 to which theanchor member 12 is attached. Advantageously, the liftinganchor assembly 10 includes a thermally insulatingpanel 70 by which, at least, the thermally insulated liftinganchor assembly 10 is novel and non-obvious over prior-art anchor assemblies. The novellifting anchor assembly 10 further includes connector bars 80 for connection to a mesh embedded in a cast top layer in a fabricated host structure. These referenced features and others are described in the following. - The
anchor member 12 provides structural reinforcement and support to lift a layered structure. In a fabricated structure, the liftinganchor assembly 10 is embedded, with a loop 14 (FIG. 4 ) being accessible as an attachment point by which the structure can be hoisted, for example as further described and illustrated in U.S. Pat. No. 10,837,185, which is incorporated herein by reference. Thus, theanchor member 12 may be made of a sufficiently strong and rigid material, such as a metal. Non-limiting examples include steel and aluminum alloy. Theloop 14 is defined cooperatively by theanchor member 12 andbase plate 60, which is represented in dashed line inFIG. 4 . Theanchor member 12 is illustrated as having an inverted U-shaped or V-Shapedarch 18 andlegs 16 with upper portions extending away from the bend and diverging from each other in a common plane. Thelegs 16 extend to respectivecurved sections 20 as illustrated inFIG. 4 .Respective end portions 22 of thelegs 16 extend from thecurved sections 20 in opposing directions out of the common plane to secure and disperse loads applied by theanchor member 12 in a host structure. As further described in the referenced U.S. Patent (U.S. Pat. No. 10,837,185), theend portions 22 of thelegs 16 are illustrated as generally parallel to each other. The arch 18 portion of theloop 14 passes through a void formed when cementitious material is poured around theanchor member 12 but excluded from the interior of thevoid forming shell 44. When embedded, theanchor assembly 10 is resistive to being withdrawn when used for lifting a host structure by way of the exposed loop. - As a layered structure is fabricated around the
anchor assembly 10, theanchor member 12 stands upright on the upper first side of thebase plate 60, which is illustrated as rectangular, more particularly square, in the drawings. For stability and strength, theanchor member 12 is fixed to thebase plate 60 in the illustrated example, for example by welding theend portions 22 of thelegs 16 to thebase plate 60. In such an example, thebase plate 60 is made of material that is weld-compatible with theanchor member 12. - Similarly, the connector bars 80 stand upright on the upper
first side 66 of thebase plate 60 as a layered structure is fabricated around theanchor assembly 10. Eachbar 80 has a lowerlinear section 82 having opposing ends, each of which is connected to a respectivediagonal section 84, which is connected to a respectiveupper end section 86. For stability and strength, the connector bars 80 are fixed to thebase plate 60 in the illustrated example, for example by welding the linearfirst section 82 to thebase plate 60. In such an example, the connector bars 80 are made of material that is weld-compatible with thebase plate 60. With reference to either bar 80, thediagonal sections 84 extend at angles to diverge from each other, and endsections 86 of thebars 80 are parallel to each other and collinear with each other, having respective termini 88 (FIG. 5 ) extending in opposite directions from each other. Two connector bars 80 are shown in drawings, each being connected, by its respective lowerlinear section 82, to thebase plate 60 proximate and parallel to a respective edge of theplate 60 opposite theother bar 80. - The
void forming shell 44 is illustrated as having halves 44 a and 44 b, each engaged to the other. Eachleg 16 of theanchor member 12 extends through a respective close-fittingopening 17 through theshell 44, theopenings 17 defined cooperatively by aligned recesses in mutually facing edges of the halves 44 a and 44 b. Theshell 44 and features thereof are further described in the referenced U.S. Patent (U.S. Pat. No. 10,837,185). Theshell 44 includes acover 46 that prevents cementitious material from spilling into theshell 44 during pouring stages of the fabrication of a structure. The illustratedcover 46 includes upwardly-extendingprotruding rods 48 that facilitate removal of thecover 46 after cementitious layers are poured and cured. Theshell 44 thus forms a protected and essentially sealed enclosure around theloop 14 of theanchor member 12, preventing cementitious material from obstructing access to theloop 14 and thus assuring theloop 14 is accessible to receive a lift apparatus or device, such as a hook on a cable or chain, by which a fabricated layered structure can be lifted, transported, and tilted to desired position. As shown for example inFIG. 2 , theend sections 86 of thebars 80 extend beyond edges of thebase plate 60 and beyond edges of the insulatingpanel 70 to facilitate material engagement and higher shear strength in a host structure when the structure is lifted by theanchor assembly 10. - An
adhesive layer 62 is shown inFIG. 3 in an enlarged scale for illustration, representing an adhesive material such as epoxy or glue, and a double-sided tape or pad, in non-limiting examples. Thus, the insulatingpanel 70 is mounted on and attached to the lowersecond side 64 of thebase plate 70, opposite thefirst side 66. Theanchor assembly 10 according to the illustrated embodiment is thus a single unitary structure for handling and placement purposes. The insulating panel may be formed of, for example, expanded polystyrene (EPS) foam. - Stages of fabrication of a
layered structure 100, in which theanchor assembly 10 is embedded, are shown inFIGS. 6-10 , which are to be understood sequentially. InFIG. 6 , a first cementitious layer 92 has been poured and aninsulation layer 110 has been set upon theupper surface 106 of thecementitious layer 102. Anopening 112 through theinsulation layer 110 defines a receivingspace 114 for theanchor assembly 10 above theupper surface 106 of the firstcementitious layer 102. Although not illustrated, the firstcementitious layer 102 may include embedded reinforcement bars, typically termed rebar. - In
FIG. 7 , theanchor assembly 10 is placed into the receiving space with the insulatingpanel 70 resting on theupper surface 106 of the firstcementitious layer 102. The opening through theinsulation layer 102, in the illustrated embodiment, is to be understood as matching or corresponding to the insulatingpanel 70 with regard to shape and dimensions so as to cover theupper surface 106 of the cementitious layer within the receivingspace 114. The insulatingpanel 70 and opening may have a snug fit, for example with a prescribed tolerance, to define an interference fit along the outer periphery of the insulatingpanel 70 with the insulatinglayer 102. This provides an uninterrupted thermally insulating layer by cooperation of the insulatingpanel 70 and surroundinginsulation layer 102 and prevents cementitious material when poured into the receiving space above the insulatingpanel 70 from reaching the firstcementitious layer 102, thus preventing a thermal bridge from forming during fabrication of the layered structure. - Other dimensions of the
anchor assembly 10, insulation layer including its opening and depth, and prescribed depth of the pending pour of a second cementitious layer are mutually prescribed prior to fabrication of the structure to yield desired effects. For example, to provide internal reinforcement to a top cementitious layer, amesh 120 can be positioned over theanchor assembly 10 as shown inFIG. 8 . Theexemplary mesh 120 includes multiple reinforcement bars, such as rebar, in a rectangular grid arrangement in which bars are disposed with respect to two perpendicular axes. In the example ofFIG. 8 ,first bars 122 of themesh 120 are parallel to and similarly spaced as theend sections 86 of thebars 80 to facilitate their engagement.Second bars 124 of themesh 120 are perpendicular to the first bars 122. Theanchor assembly 10, by way the height of theupper end sections 86 of thebars 80 above the lower surface of the insulatingpad 70, supports themesh 120 as spaced from the upper surface 106 (FIG. 7 ) of the first insulatinglayer 102, thereby embedding the mesh 120 a second cementitious layer when poured to meet the top of thevoid forming shell 44. - In
FIG. 9 , theupper end sections 86 of thebars 80 are secured tonearby bars 122 of the mesh, for example as tied bywire 126. This stabilizes themesh 120 with theanchor assemblies 10 across a wide area structure being fabricated, of which only a portion is represented inFIGS. 6-10 . - In
FIG. 10 , a secondcementitious layer 130 has been poured over theinsulation layer 110. During the pour, the remainder of the receiving space above the insulatingpad 70 is filled with poured cementitious material. Due to the seal of the outer periphery of the insulatingpanel 70 with the inner periphery of the opening through the insulation layer, the poured material does not reach thefirst layer 102 and thus a thermal bridge is not formed. The secondcementitious layer 130 is poured to have anupper surface 136 approximately flush with an upper edge of thevoid forming shell 44. This arranges the arch 14 of the anchor member as sunken relative to theupper surface 136 of the secondcementitious layer 130. - When both
cementitious layers plug 132 of cementitious material of thesecond layer 130 filling the remainder of the receiving space above the insulatingpad 70, the fabricated structure can be lifted to a desired position. Typically this refers to a vertical disposition in which: the horizontallower surface 104 of the firstcementitious layer 102 inFIG. 10 is lifted to define a first outer surface of the fabricated structure; and, the horizontalupper surface 136 of the secondcementitious layer 130 inFIG. 10 is lifted to define a second outer surface of the fabricated structure parallel and opposite the first outer surface. - A thermally insulated
brace anchor assembly 210, according to at least one embodiment, is shown inFIGS. 11-13 . As described below, in an expected non-limiting use, theanchor assembly 210 is embedded in a layered host structure having a central insulation layer sandwiched between cementitious layers. Theanchor assembly 210 provides a connection point for additional structures, such as support beams and other elements, to be supported by or fixed to the layered host structure when complete with the cementitious layers cured. The fabrication of thestructure 200 ofFIG. 13 is accomplished similarly as described above with references toFIGS. 6-10 . Thus, these descriptions of theanchor assembly 210 and its use benefit from some of the above descriptions. - In the illustrated embodiment, the
anchor assembly 210 includes ananchor member 212, abase plate 260 to which theanchor member 212 is attached, a thermally insulatingpanel 270, andconnector bars 280 for connection to a mesh embedded in a cast top layer in a fabricated host structure. These referenced features and others are described in the following. - The
anchor member 212 is illustrated as acylindrical post 214, which may be hollow, having a lower end connected to the upper first side of thebase plate 260, and an upper end extending away therefrom. The upper end of the post defines aferrule 216 having an opening upper terminus and a threaded interior 218 (FIG. 11 ) for receiving a bolt or other threaded shank or item. In a fabricated structure, theanchor assembly 210 is embedded, with the threaded open end of theferrule 216 being accessible as an attachment point for additional structures and elements, for example by use of a threaded bolt. Thus, theanchor member 212 may be made of a sufficiently strong and rigid material, such as a metal. Non-limiting examples include steel and aluminum alloy. When embedded in cured cementitious material in a fabricated host structure, theanchor assembly 210 is resistive to being withdrawn when used for connecting another structure or element to the host structure. - The novel thermally insulated
brace anchor assembly 210 further includes connector bars 280 for connection to a mesh embedded in a cast top layer in a fabricated host structure. The connector bars 280 are positioned above and spaced from thebase plate 260 as a layered structure is fabricated around theanchor assembly 210. Eachbar 280 has opposing ends defining a length therebetween, and a central portion connected to the post below the ferrule. Thebars 280 may be attached to thepost 214, for example, by tack welding. In such an example, the connector bars 280 are made of material that is weld-compatible with theanchor member 212. In the illustrated embodiment, bars are provided in pairs. A first pair includes twoconnector bars 282 that are parallel to each other, are attached to opposing sides of the post, and are thus spaced from each other by the diameter of the post. A second pair includes twoconnector bars 284 that are parallel to each other, are attached to opposing sides of the post, and are thus spaced from each other by the diameter of the post. In the illustrated embodiment, twoconnector bars 282 of the first pair are perpendicular to the twoconnector bars 284 of the second pair. As shown for example inFIG. 12 , theend sections 286 of thebars 280 extend beyond edges of the base plate 160 and beyond edges of the insulatingpanel 270 to facilitate material engagement and higher shear strength in a host structure. - An adhesive layer, for example such as
adhesive layer 62 shown inFIG. 3 with between theplate 60 and insulatingpad 70, may be provided to attach thebase plate 260 to theinsulting pad 270, referring to an adhesive material such as epoxy or glue, and a double-sided tape or pad, in non-limiting examples. Thus, the insulatingpanel 270 is mounted on and attached to lower second side of thebase plate 260. Theanchor assembly 210 in such embodiments is thus a single unitary structure for handling and placement purposes. - As described above with reference to
FIGS. 6-10 , a layered structure can be fabricated with theanchor assembly 210 in lieu of or spaced from theanchor assembly 10. That is,multiple anchor assemblies 10 and/oranchor assemblies 210 can be embedded in the same layered structures, for example in rows and columns or in any preferred arrangement or pattern. As in the descriptions with reference toFIGS. 6-10 , and now with reference toFIG. 13 , theanchor assembly 210 is placed into the receiving space with the insulatingpanel 270 resting on theupper surface 106 of the firstcementitious layer 102. This provides an uninterrupted thermally insulating layer by cooperation of the insulatingpanel 270 and surroundinginsulation layer 110 and prevents poured cementitious material from entering the receiving space above the insulatingpanel 270 and from reaching the firstcementitious layer 102, thus preventing a thermal bridge from forming during fabrication of thelayered structure 200. InFIG. 13 , the secondcementitious layer 130 has been poured over theinsulation layer 110. During the pour, the remainder of the receiving space above the insulating pad is filled with poured cementitious material without a thermal bridge forming. The seal of the outer periphery of the insulating panel 170 with the inner periphery of the opening through the insulation layer prevents cementitious material poured for fabrication of thesecond lay 130 from reaching thefirst layer 102. A bolt, cap, or plug may be used to block the open upper end of the ferrule to prevent poured cementitious material from entering the threadedinterior 218. When bothcementitious layers plug 232 of cementitious material filling the remainder of the receiving space above the insulatingpad 270, the fabricatedstructure 200 can be lifted to a desired position. - Particular embodiments and features have been described with reference to the drawings. It is to be understood that these descriptions are not limited to any single embodiment or any particular set of features, and that similar embodiments and features may arise or modifications and additions may be made without departing from the scope of these descriptions and the spirit of the appended claims.
Claims (20)
1. An anchor assembly configured to be embedded in a layered structure, the anchor assembly comprising:
a base plate comprising a first side and a second side opposite the first side;
an anchor member connected to the first side of the base plate; and
a thermally insulating panel attached to the second side of the base plate.
2. The anchor assembly of claim 1 , further comprising an adhesive layer between the thermally insulating panel and the second side of the base plate, the adhesive layer attaching the thermally insulating panel to the second side of the base plate.
3. The anchor assembly of claim 2 , wherein the adhesive layer comprises at least one of epoxy, glue, double-sided tape, and an adhesive pad.
4. The anchor assembly of claim 1 , wherein the anchor member defines, at least in part, a loop for attachment to a lift device for lifting the layered structure.
5. The anchor assembly of claim 4 , wherein:
the anchor member comprises an arch and two legs extending from the arch to the base plate;
the two legs are attached to the base plate; and
the two legs, arch, and base plate cooperatively define the loop.
6. The anchor assembly of claim 4 , further comprising at least one connector bar for attaching the anchor assembly to a mesh in a layered structure, the connector bar having a first section connected to the first side of the base plate and opposing end sections end sections for tying to the mesh.
7. The anchor assembly of claim 1 , wherein the anchor member comprises a post connected to the base plate, the post having an upper end defining a ferrule with a threaded interior.
8. The anchor assembly of claim 7 , further comprising at least one connector bar for attaching the anchor assembly to a mesh in a layered structure, the connector bar connected to the post spaced from the base plate.
9. The anchor assembly of claim 1 , wherein the thermally insulating panel comprises foam.
10. A layered structure comprising:
a first layer of cementitious material;
an insulation layer positioned on the first layer of cementitious material, the insulating layer having an opening defining a receiving space;
an anchor assembly positioned in part in the receiving space, the anchor assembly comprising:
a base plate having a first side and a second side opposite the first side;
an anchor member connected to the first side of the base plate; and
a thermally insulating panel attached to the second side of the base plate,
wherein the thermally insulating panel is positioned on the first layer of cementitious material within the receiving space.
11. The layered structure of claim 10 , wherein the insulating panel and opening are matched with regard to shape such that the insulating panel has a snug fit or interference fit with the opening through the insulation layer and the insulating panel covers a surface of the cementitious layer within the receiving space.
12. The layered structure of claim 11 , further comprising:
a second cementitious layer positioned on the insulation layer;
a plug of cementitious material filling a remainder of the receiving space not filled by the anchor assembly,
wherein:
the insulating pad prevents the plug of cementitious material from reaching the first cementitious layer thereby preventing a thermal bridge from forming between the first cementitious layer and second cementitious layer; and
the layered structure defines a tilt-up wall.
13. The layered structure of claim 10 , wherein the anchor assembly comprises an adhesive layer between the thermally insulating panel and the second side of the base plate, the adhesive layer attaching the thermally insulating panel to the second side of the base plate.
14. The layered structure of claim 13 , wherein the adhesive layer comprises at least one of epoxy, glue, double-sided tape, and an adhesive pad.
15. The layered structure of claim 10 , wherein the anchor member defines, at least in part, a loop for attachment to a lift device for lifting the layered structure.
16. The layered structure of claim 15 , wherein:
the anchor member comprises an arch and two legs extending from the arch;
the two legs are attached to the base plate; and
the two legs, arch, and base plate cooperatively define the loop.
17. The anchor assembly of claim 15 , further comprising:
at least one connector bar having a first section connected to the first side of the base plate and opposing end sections for tying to the mesh.
18. The anchor assembly of claim 17 , the connector bar comprising diagonal sections each connecting a respective one of the end sections to the first section, wherein the end sections are parallel and collinear.
19. The layered structure of claim 10 , wherein the anchor member comprises a post connected to the base plate, the post having an upper end defining a ferrule with a threaded interior, wherein the anchor assembly comprises at least one connector bar for attaching the anchor assembly to a mesh of the layered structure, the connector bar connected to the post spaced from the base plate.
20. The anchor assembly of claim 17 , wherein the thermally insulating panel comprises foam.
Priority Applications (1)
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US17/850,336 US20230417072A1 (en) | 2022-06-27 | 2022-06-27 | Thermally Insulated Tilt-Up Wall Lift and Brace Assemblies |
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US17/850,336 US20230417072A1 (en) | 2022-06-27 | 2022-06-27 | Thermally Insulated Tilt-Up Wall Lift and Brace Assemblies |
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US17/850,336 Pending US20230417072A1 (en) | 2022-06-27 | 2022-06-27 | Thermally Insulated Tilt-Up Wall Lift and Brace Assemblies |
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