Combined building facade UHPC (Ultra High Performance Concrete) component, mounting embedded part and mounting method
By installing embedded parts in the UHPC components of the modular building facade, and utilizing the staggered positioning of pre-embedded perforated anchors, limiting reinforcing bars, and steel corrugated rings, the problem of insufficient strength at the connection nodes of the high-performance concrete building facade is solved, achieving an efficient and stable connection effect.
Patent Information
- Application Number
- CN202511913857.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-02-06
AI Technical Summary
In existing technologies, the strength design of connection nodes for high-performance concrete building facades is insufficient, making it difficult to meet the connection requirements of ultra-thin facade walls with large curvature of ultra-high performance concrete materials, and the binding of embedded parts is difficult.
The pre-embedded parts for the UHPC components of the building facade are installed using a combination of pre-embedded perforated anchors, limiting reinforcing bars, steel corrugated rings and bent steel components. By staggering the positioning of the limiting reinforcing bars and steel corrugated rings, combined with the rigid positioning and flexible adjustment of the bent steel, the strength of the joints is improved and the difficulty of binding is reduced.
It improves the strength of embedded parts nodes, reduces construction difficulty, ensures the stability and adjustability of the connection, is suitable for building designs with ultra-thin facade material layers and thick insulation layers, and enhances the punching shear resistance of the connection nodes.
Smart Images
Figure CN121473468A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an embedded part for the installation of modular building facade components, belonging to the technical field of embedded parts for prefabricated building components. Background Technology
[0002] Embedded components are connecting parts, classified by material into metal embedded components and plastic embedded components. They consist of exposed connection parts and anchor bars (such as hooked steel bars). They are embedded into the main structure, such as cast-in-place concrete, through connecting structural steel bars. Other components, such as joists, are welded or mechanically connected to the exposed connection parts (such as bolt holes or smooth panels) to achieve connection with the main structure. This type of component includes embedded bolts, channel embedded parts, column anchors, and flat embedded parts, etc. Installed inside the main structure and hidden within it, they facilitate structural construction, and are convenient for the installation and fastening of external engineering equipment and components, offering flexibility, convenience, and high construction efficiency.
[0003] The function of embedded parts and the main forces they resist are determined by their external connections. When facade components are connected to the main structure, the embedded parts that connect the facade components and the main structure (in the xz plane) are mainly subjected to the gravity of the facade components (in the z-axis direction), some tensile forces (in the y-axis direction), and bending moments (not in the xz plane). When facade components adopt unconventional designs, such as using ultra-thin, large-curve facade walls made of ultra-high-performance concrete, and due to current requirements for building insulation and fire safety, thicker insulation layers are often required, as well as necessary barriers to isolate the insulation layer from fire sources. This leads to a design that tends towards a thin facade material layer + thick insulation layer + fireproof isolation layer. This high-quality, high-performance building facade design also places higher strength requirements on the connection nodes.
[0004] However, the existing technology has shortcomings in the strength design of such connection nodes (embedded parts) of wall panels. Summary of the Invention
[0005] The purpose of this invention is to provide a pre-embedded component for the installation of UHPC components on the exterior of a building facade. For the exterior of a building made of high-strength concrete (UHPC), the pre-embedded component joints are strengthened, while the difficulty of binding the pre-embedded components at the joints is reduced, and sufficient adjustable flexibility is also provided.
[0006] The present invention adopts the following technical solution:
[0007] An embedded component for installing UHPC components on a modular building facade includes a pre-embedded perforated anchor bolt 1, limiting reinforcing bars 4, and a steel corrugated ring 2. The pre-embedded perforated anchor bolt 1 has an open end 1-1 with internal threads 1-3, and two sets of waist-shaped holes 1-4 are opened on the side of the other end 1-2 away from the open end 1-1. The steel corrugated ring 2 is sleeved around the pre-embedded perforated anchor bolt 1 with the pre-embedded perforated anchor bolt 1 as the axis, and the corrugation height of the corrugated ring is adapted to the height of the waist-shaped holes 1-4. One of the two limiting reinforcing bars 4 is inserted into one set of waist-shaped holes 1-4 above the low corrugation 2-1, and the other of the two limiting reinforcing bars 4 is inserted into another set of waist-shaped holes 1-4 below the high corrugation 2-2. The two limiting reinforcing bars 4 are superimposed to form an interlaced shape and are rigidly positioned by being limited by the steel corrugated ring 2.
[0008] Preferably, it also includes several bent steel bar components 3, each bent steel bar component 3 having a metal collar 3-1 that can be fitted from the open end 1-1, and a bent steel bar 3-2 extending downward from the metal collar 3-1 through a Z-shaped bend; the outer edge of the pre-embedded perforated anchor bolt 1 is provided with a stepped portion 1-5 downward from the open end 1-1; at least one metal collar 3-1 of the bent steel bar 3 is fitted into the pre-embedded perforated anchor bolt 1 and then a steel bar corrugated ring 2 is placed, such that the high corrugation portion 2-2 of the steel bar corrugated ring 2 presses against the bent steel bar 3-2.
[0009] Furthermore, after the corrugated steel ring 2 is placed, at least one bent steel bar 3 has its metal collar 3-1 fitted into the pre-embedded perforated anchor bolt 1, so that its bent steel bar 3-2 presses on top of the low corrugation 2-1.
[0010] Furthermore, there are three bent steel bar components 3, and each of their bent steel bars 3-2 is pressed below the high corrugation 2-2 of the steel bar corrugated ring 2.
[0011] Preferably, the steel corrugated ring 2 is circular or elliptical in the orthographic projection direction.
[0012] A UHPC component for building facades, wherein pre-embedded installation pre-fittings for the combined UHPC component for building facades as described in claims 1-5 are pre-installed at the connection nodes.
[0013] Preferably, it has a prefabricated suspended wall panel structure with a thin exterior facade material layer and a thick insulation layer, that is, the thickness of the insulation layer is greater than the thickness of the exterior facade material layer, and it is suspended on the interior wall by pre-embedded perforated anchor bolts 1.
[0014] An installation method for embedded parts of the above-mentioned UHPC component for the exterior facade of a modular building includes the following steps:
[0015] S1. When laying the steel mesh of the facade components on the formwork, position and place the steel corrugated ring 2. The steel corrugated ring 2 is placed under the steel mesh and tied to the steel mesh.
[0016] S2. Install the pre-embedded perforated anchor bolt 1 upright approximately at the center of the steel corrugated ring 2;
[0017] S3. Several bent steel bar components 3 are fitted into the pre-embedded perforated anchor bolt 1 through the metal collar 3-1 and limited by the step part 1-5. The multiple bent steel bar components 3 are staggered at a certain angle.
[0018] S4. Insert the limiting steel bar 4 into the waist-shaped hole 1-4 of the pre-embedded perforated anchor bolt 1. Through the mutual interpenetration with the steel bar corrugated ring 2 and the steel bar mesh, a mutual limiting and positioning is formed.
[0019] Preferably, step S4 specifically includes: inserting a first limiting steel bar into a set of waist-shaped holes and pressing it above the low corrugation 2-1; then inserting a second limiting steel bar into another set of waist-shaped holes and pressing it below the high corrugation 2-2; the two limiting steel bars intersect and contact each other.
[0020] Furthermore, after step S5, it also includes: inserting several straight steel bars of the same height and parallel to the second limiting steel bar below the high corrugation 2-2 of the steel bar corrugated ring 2.
[0021] Furthermore, each metal collar 3-1 is welded and fixed to the lower metal collar 3-1 during installation.
[0022] The beneficial effects of this invention are as follows:
[0023] 1) For building facades made of high-strength concrete (UHPC), increase the strength at the embedded parts joints (embedded perforated anchors);
[0024] 2) The process of binding embedded parts at nodes is eliminated, reducing the construction difficulty of on-site embedding; and improving the accuracy and consistency of embedded construction.
[0025] 3) The bent steel bar component 3 can be set at various angles and in various quantities as needed, thus providing sufficient adjustable flexibility for the setting of nodes.
[0026] 4) By cleverly utilizing the installation sequence, stable positioning of various components can be ensured, welding work can be reduced, and the efficiency of node arrangement can be improved. Attached Figure Description
[0027] Figure 1 This is a perspective view of the embedded parts for the installation of the UHPC component of the modular building facade of the present invention (after assembly).
[0028] Figure 2This is a top view of the pre-embedded parts for the installation of the UHPC component of the modular building facade of the present invention (after assembly).
[0029] Figure 3 This is a structural schematic diagram of a pre-embedded perforated anchor bolt.
[0030] Figure 4 This is a partial schematic diagram of the limiting steel bar after it has been inserted into the waist-shaped hole (this step is performed last, and other structures are hidden in the diagram).
[0031] Figure 5 It is the installation process of the pre-embedded components themselves. Figure 1 .
[0032] Figure 6 It is the installation process of the pre-embedded components themselves. Figure 2 .
[0033] Figure 7 It is the installation process of the pre-embedded components themselves. Figure 3 .
[0034] Figure 8 It is the process of installing the pre-embedded components on the reinforcing mesh. Figure 1 .
[0035] Figure 9 It is the process of installing the pre-embedded components on the reinforcing mesh. Figure 2 .
[0036] Figure 10 It is the process of installing the pre-embedded components on the reinforcing mesh. Figure 3 .
[0037] Figure 11 It is the process of installing the pre-embedded components on the reinforcing mesh. Figure 4 .
[0038] Figure 12 This is a schematic diagram showing the pre-embedded components after installation, bound and fixed to the reinforcing mesh of the example component.
[0039] Figure 13 This is a schematic diagram showing the reinforcement mesh section after the insulation layer is laid inside the UHPC.
[0040] Figure 14 A diagram showing the connection method that strengthens the connection points, with an additional steel bar on each side of the steel bar above the intersection, connecting to the steel mesh of the exterior wall panel.
[0041] In the diagram, 1. Pre-embedded perforated anchor bolt, 2. Reinforcing bar corrugated ring, 3. Bent reinforcing bar component, 4. Limiting reinforcing bar, 3-1. Metal collar, 3-2. Bent reinforcing bar, 2-1. Low corrugation area, 2-2. High corrugation area. Detailed Implementation
[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0043] Example 1:
[0044] This embodiment specifically introduces a pre-embedded component for installing UHPC components on a modular building facade. For high-strength concrete (UHPC) building facades, it improves the strength of the pre-embedded component joints while reducing the difficulty of binding the pre-embedded components, and also retains sufficient adjustable flexibility. Specific details are as follows:
[0045] See Figure 1 , Figure 1 The display shows the structure of the pre-embedded parts for the installation of UHPC components on the assembled building facade: including pre-embedded perforated anchor bolts 1, limiting reinforcing bars 4, and steel corrugated rings 2.
[0046] It should be noted that this embodiment does not include Figure 1 3. The bent steel bar component in the middle.
[0047] Combination Figure 3 The pre-embedded perforated anchor bolt 1 has an open end 1-1 with internal threads 1-3, and two sets of oblong holes 1-4 are opened on the side of the other end 1-2 away from the open end 1-1; the steel corrugated ring 2 is sleeved around the pre-embedded perforated anchor bolt 1 with the pre-embedded perforated anchor bolt 1 as the axis, and the corrugation height of the corrugated ring is adapted to the height of the oblong holes 1-4 (in conjunction with...). Figure 1 );
[0048] Combination Figure 5 One of the two limiting reinforcing bars 4 is inserted into a set of waist-shaped holes 1-4 above the low corrugation section 2-1; the other of the two limiting reinforcing bars 4 is inserted into another set of waist-shaped holes 1-4 below the high corrugation section 2-2; the two limiting reinforcing bars 4 are superimposed to form an interlaced shape and are rigidly positioned by the limiting of the steel reinforcement wave ring 2.
[0049] Example 2:
[0050] Based on Example 1, see Figure 1 It also includes several bent steel bar components 3.
[0051] See Figure 6 The bent steel bar component 3 has a metal collar 3-1 that can be fitted into the open end 1-1, and a bent steel bar 3-2 extends downward from the metal collar 3-1 through a Z-shaped bend; the outer edge of the pre-embedded perforated anchor bolt 1 is provided with a stepped part 1-5 downward from the open end 1-1.
[0052] At least one bent steel bar 3 ( Figure 7The image shows three metal collars 3-1 fitted onto the pre-embedded perforated anchor bolts 1, followed by the placement of the steel corrugated ring 2, such that the high corrugation section 2-2 of the steel corrugated ring 2 presses against the bent steel bar 3-2. Figure 7 As shown.
[0053] Specifically, with appendix Figure 7 Correspondingly, there are three bent steel bar components 3, and each of their bent steel bars 3-2 is pressed below the high corrugation 2-2 of the steel bar corrugated ring 2.
[0054] In this embodiment, optionally, see [link to previous document]. Figure 6 After the corrugated steel ring 2 is installed, at least one bent steel bar 3 has its metal collar 3-1 fitted onto the pre-embedded perforated anchor bolt 1, so that its bent steel bar 3-2 presses above the low corrugation 2-1. This is mainly to illustrate that some bent steel bars 3 can also be arranged after the corrugated steel ring 2 is installed.
[0055] In this embodiment, see Figure 2 The corrugated steel ring 2 is circular or elliptical in the orthographic projection direction. Figure 2 It is displayed as an oval shape.
[0056] A UHPC (Ultra-High-Pressure Polymer) component for building facades is pre-embedded at connection nodes. This pre-embedded component, a composite UHPC component for building facades, has a prefabricated suspended wall panel structure with a thin facade material layer and a thick insulation layer (i.e., the insulation layer is thicker than the facade material layer). It is suspended from the interior wall via pre-embedded perforated anchor bolts 1. The attached drawings do not show the UHPC component for building facades or its fixing structure, but this does not affect the understanding of the solution.
[0057] A method for installing embedded parts for UHPC components on a modular building facade includes the following steps:
[0058] S1. When laying the steel mesh for the facade components on the formwork, the steel corrugated ring 2 should be positioned and placed below the steel mesh and tied to it; Figure 8 )
[0059] S2. Install the pre-embedded perforated anchor bolt 1 upright approximately at the center of the steel corrugated ring 2; Figure 9 )
[0060] S3. Several bent steel bar components 3 are fitted into the pre-embedded perforated anchor bolts 1 through metal collars 3-1, and limited by the stepped part 1-5. The multiple bent steel bar components 3 are staggered at a certain angle; Figure 10 )
[0061] S4. Insert the limiting steel bar 4 into the oblong hole 1-4 of the pre-embedded through-hole anchor bolt 1. Through mutual interpenetration with the corrugated ring 2 and the steel mesh, mutual limiting and positioning are formed. Figure 11 )
[0062] Preferably, step S4 specifically includes: inserting a first limiting steel bar into a set of waist-shaped holes and pressing it above the low corrugation 2-1; then inserting a second limiting steel bar into another set of waist-shaped holes and pressing it below the high corrugation 2-2; the two limiting steel bars intersect and contact each other. The two limiting steel bars can completely limit the vertical direction of the steel bar corrugated ring 2.
[0063] In this embodiment, after step S4, the method further includes: inserting several straight reinforcing bars of the same height and parallel to the second limiting reinforcing bar below the high corrugation 2-2 of the reinforcing bar corrugated ring 2. Figure 14 )
[0064] In this embodiment, each metal collar 3-1 is welded and fixed to the lower metal collar 3-1 during installation.
[0065] By selecting the direction, position, and quantity of the inserted limiting reinforcing bars 4 and the collar-bent reinforcing bars 3, this invention can achieve semi-rigid connection and unidirectional hinge as needed, increasing the flexibility of the connection node. When connected to ultra-thin (especially thick insulation layer) facade main material, it improves the local punching shear resistance, prevents the facade from being damaged first at the connection node when subjected to extreme loads, and avoids the connection node becoming a weak link.
[0066] The individual components in the attached diagram are described below:
[0067] Pre-embedded perforated anchor bolt 1: used to connect bolts and anchor rods, and to transfer the self-weight of the wall panel and external loads to the main structure; one end is open, with an outer diameter smaller than the other end, and the inner wall has threads 1-3; the other end is closed and has two pairs of through-holes 1-4 for the plain round limiting steel bars 4 to cross through, to limit in the xy plane (the cross section plane of the nut sleeve rod), while ensuring a certain rotation angle and a certain displacement in the z-axis direction (perpendicular to the cross section plane of the nut sleeve rod);
[0068] 2. Reinforcing bar corrugated ring: It is circular or elliptical when viewed from the z-axis direction. It is a three-dimensional shape in the form of a continuous elliptical curve with mirrored misalignment along the path of the circle. The ring of reinforcing bars after the ends of the reinforcing bars are connected: It is used to assemble into an integral embedded part to limit the various components: limiting reinforcing bars 4, bent reinforcing bars 3 and pre-embedded perforated anchor bolts 1.
[0069] The bent steel bar component 3 (with a metal collar 3-1 welded to one end): The metal collar 3-1 is inserted into the upper part of the pre-embedded perforated anchor bolt 1, and the straight bar at the other end passes through a crest of the steel bar corrugated ring 2 to form mutual locking. When the anchor bolt is pulled after connection, it can share the force with other steel bars through the ring.
[0070] Limiting reinforcement bar 4: Initial positioning can be achieved by inserting one reinforcement bar in a perpendicular direction and tying it to the distributed reinforcement bars on the exterior facade. If a hinged connection in one direction is required, only one limiting reinforcement bar 4 needs to be inserted perpendicular to this direction.
[0071] It should be noted that the limiting rebar 4 should be inserted only after the rebar corrugated ring 2 is in place and the bent rebar component 3 is installed; otherwise, the bent rebar component 3 will not be able to be installed. Only a portion of the bent rebar component 3 can be installed after the limiting rebar 4 is installed.
[0072] This invention consists of existing components or simply processed components, making assembly simple and construction efficient. It is suitable for connecting ultra-thin facades. The connection between the inserted reinforcing bars and the anchor bolts, and the sleeved plain round reinforcing bars and the thin-layer main body, radiates outward from the point. The connection at the nodes is more robust. Flexible connection options can also be provided as needed (the number and direction of the bent reinforcing bar components 3 can be adjusted).
[0073] This invention designs an assembly-type embedded part for high-performance facade unit components. It is easy to assemble and can achieve resistance to shear force (gravity), bending force, tensile force (horizontal load, such as earthquake or wind load), and punching shear force according to requirements, so as to safely connect the facade unit to the main structure.
[0074] The above two embodiments are optional embodiments of the present invention. Those skilled in the art can make various changes or improvements on this basis. Without departing from the general concept of the present invention, these changes or improvements should fall within the scope of protection claimed by the present invention.
Claims
1. An embedded part for installing UHPC components on a modular building facade, characterized in that: Includes pre-embedded perforated anchor bolts (1), limiting inserts (4), and steel corrugated rings (2); The pre-embedded perforated anchor bolt (1) has an open end (1-1) with internal threads (1-3), and two sets of waist-shaped holes (1-4) are opened on the side of the other end (1-2) away from the open end (1-1). The steel corrugated ring (2) is sleeved on the outside of the pre-embedded perforated anchor (1) with the pre-embedded perforated anchor (1) as the axis, and the corrugation height of the corrugated ring is adapted to the height of the waist-shaped hole (1-4); One of the two limiting inserts (4) is inserted into a set of waist-shaped holes (1-4) above the low corrugation (2-1). The other of the two limiting inserts (4) passes under the high corrugated section (2-2) and is inserted into another set of waist-shaped holes (1-4). The two limiting reinforcing bars (4) overlap to form an interlaced shape and are simultaneously limited by the steel wave ring (2) to achieve rigid positioning.
2. The pre-embedded component for installing UHPC components on the combined building facade as described in claim 1, characterized in that: It also includes several bent steel bar components (3), each bent steel bar component (3) having a metal collar (3-1) that can be fitted from the open end (1-1), and a bent steel bar (3-2) extending downward from the metal collar (3-1) through a Z-shaped bend. The pre-embedded perforated anchor bolt (1) has a stepped part (1-5) on its outer edge from the open end (1-1) downwards. At least one metal collar (3-1) of a bent steel bar (3) is fitted into a pre-embedded perforated anchor bolt (1) and then a steel bar corrugated ring (2) is placed, such that the high corrugation (2-2) of the steel bar corrugated ring (2) presses against the bent steel bar (3-2).
3. The pre-embedded component for installing UHPC components on the combined building facade as described in claim 2, characterized in that: After the steel corrugated ring (2) is placed, the metal collar (3-1) of at least one bent steel bar (3) is fitted into the pre-embedded perforated anchor bolt (1), and the bent steel bar (3-2) is pressed on top of the low corrugation (2-1).
4. The pre-embedded component for installing UHPC components on the combined building facade as described in claim 2, characterized in that: The number of the bent steel bar components (3) is three, and each of the bent steel bars (3-2) is pressed below the high corrugation (2-2) of the steel bar corrugated ring (2).
5. The pre-embedded component for installing UHPC components on the combined building facade as described in claim 1, characterized in that: The steel corrugated ring (2) is circular or elliptical in the orthographic projection direction.
6. A UHPC component for building facades, characterized in that: Pre-embedded parts for installing UHPC components of the combined building facade as described in claims 1-5 are installed at the connection nodes.
7. The UHPC component for building facades as described in claim 6, characterized in that: It has a prefabricated suspended wall panel structure with a thin exterior facade material layer and a thick insulation layer, that is, the thickness of the insulation layer is greater than the thickness of the exterior facade material layer, and it is suspended on the inner wall by pre-embedded perforated anchor bolts (1).
8. A method for installing embedded parts for UHPC components in a combined building facade according to any one of claims 2-5, characterized in that, Includes the following steps: S1. When laying the steel mesh of the exterior facade components on the formwork, position and place the steel corrugated ring (2). The steel corrugated ring (2) is placed under the steel mesh and tied to the steel mesh. S2. The pre-embedded perforated anchor bolt (1) is set upright approximately at the center of the steel corrugated ring (2); S3. Several bent steel bar components (3) are inserted into the pre-embedded perforated anchor bolts (1) through metal collars (3-1) and limited by the step part (1-5). The multiple bent steel bar components (3) are staggered at a certain angle. S4. Insert the limiting steel bar (4) into the waist-shaped hole (1-4) of the pre-embedded perforated anchor bolt (1), and form mutual limiting positioning by interpenetrating with the steel bar corrugated ring (2) and the steel bar mesh.
9. The installation method as described in claim 8, characterized in that: Step S4 specifically includes: inserting the first limiting steel bar into a set of waist-shaped holes and pressing it above the low corrugation (2-1); then inserting the second limiting steel bar into another set of waist-shaped holes and pressing it below the high corrugation (2-2); the two limiting steel bars intersect and contact each other; after step S5, it also includes: inserting several straight steel bars of the same height and parallel to the second limiting steel bar below the high corrugation (2-2) of the steel bar corrugated ring (2).
10. The installation method of the embedded parts for the UHPC component installation of the combined building facade as described in claim 9, characterized in that: Each metal collar (3-1) is welded and fixed to the lower metal collar (3-1) during installation.