A UHPC prefabricated component

Abstract

This utility model relates to the field of precast component technology, and more particularly to a UHPC precast component. Its technical solution includes: a first precast component body and a second precast component body. The first precast component body is provided with an insert block, and the second precast component body is provided with a protrusion. A connecting screw is slidably sleeved within the first and second precast component bodies. A first mounting block and a second mounting block are slidably sleeved on the connecting screw. Reinforcing frames are mounted at both ends of the second mounting block via pins. Guide grooves are provided within the reinforcing frames. Connecting rods are fixedly mounted at both ends of the first mounting block via mounting frames. Tie bars are slidably inserted into the insert block, and the tie bars are slidably inserted into the protrusion. This utility model meets the requirements for use with precast components, ensuring the stability of the connection during use and preventing loosening and detachment after prolonged use.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated component technology, specifically to a UHPC prefabricated component. Background Technology

[0002] With the booming development of the construction industry and the continuous iteration and innovation of building curtain wall technology, large-scale modern public building projects are emerging one after another, placing higher demands on building exterior wall decoration materials. Against this backdrop, ultra-high performance concrete (UHPC) has stood out with its superior performance and has been widely used in the field of building exterior wall decoration.

[0003] Compared to traditional concrete, UHPC exhibits significant advantages, possessing not only high strength and density but also excellent durability and high toughness, effectively resisting environmental erosion and extending the building's lifespan. Furthermore, its high plasticity allows it to be processed into specific specifications and shapes according to design requirements, giving building facades unique three-dimensional forms through artistic design, greatly enhancing the building's aesthetic appeal and recognizability.

[0004] A search revealed that patent CN212129491U discloses a prefabricated component. While this device utilizes a plug-in splicing method and grouting for fixation, resulting in convenient assembly and stable connection, the plug-in splicing method is prone to loosening and detachment at the joints during long-term use due to external environmental factors and building vibrations. This significantly reduces the stability of the decorative device, affecting not only the integrity of the building's appearance but also potentially posing safety hazards. Therefore, there is an urgent need to optimize and improve the connection structure of existing UHPC building exterior wall decorative devices to enhance their installation stability and reliability. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a UHPC prefabricated component, which solves the problems mentioned in the background art.

[0006] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0007] A UHPC prefabricated component includes a first prefabricated component body and a second prefabricated component body, wherein the first prefabricated component body is provided with an insert block and the second prefabricated component body is provided with a protrusion.

[0008] A connecting screw is slidably sleeved within the first precast component body and the second precast component body. A first mounting block and a second mounting block are slidably sleeved on the connecting screw. A reinforcing frame is installed at both ends of the second mounting block via a pin. A guide groove is provided inside the reinforcing frame. A connecting rod is fixedly installed at both ends of the first mounting block via a mounting frame.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the protrusion is fitted inside the insert, and the gap between the insert and the protrusion, as well as the bodies of the first and second precast components, are filled with mortar.

[0011] The beneficial effects of adopting the above-mentioned further solutions are:

[0012] The interlocking of protrusions and insertion blocks forms the initial positioning structure between precast components, ensuring precise connection. Mortar is then filled into the gaps between the components and within the precast component itself. Once hardened, the mortar tightly fills the voids, enhancing the bond between components and forming a unified load-bearing structure. This connection method effectively disperses external loads, reduces stress concentration, and improves the shear and tensile strength of the connection points. This makes the connection points less prone to failure when the UHPC precast components are subjected to large loads, thus improving the overall structural stability and load-bearing capacity. Simultaneously, the mortar filling also acts as a seal, preventing moisture and corrosive media from penetrating the connection points, enhancing the durability and service life of the components.

[0013] Furthermore, a tie bar is slidably inserted into the insert block, and the tie bar is slidably inserted into the protrusion.

[0014] The beneficial effects of adopting the above-mentioned further solutions are:

[0015] The tie bars, running through the inserts and protrusions, effectively add a connecting structure between the two precast components. When the precast component is subjected to tensile force, the tie bars can directly bear the tensile force and transfer it to the adjacent precast component, preventing relative displacement or separation between the insert and protrusion due to excessive tensile force. Furthermore, the combined effect of the tie bars and mortar enhances the toughness of the connection points between the precast components, giving them better deformation coordination under dynamic loads such as earthquakes, reducing cracks caused by inconsistent deformation, and improving the overall seismic performance and safety of the structure.

[0016] Furthermore, there are two sets of the first mounting block and the second mounting block, and the two sets of the first mounting block and the second mounting block are respectively disposed in the first precast component body and the second precast component body.

[0017] The beneficial effects of adopting the above-mentioned further solutions are:

[0018] By setting up two sets of first and second mounting blocks, a connection point can be formed within the two prefabricated components, allowing the connecting screw to connect the two prefabricated components.

[0019] Furthermore, the connecting rod is sleeved inside the reinforcing frame, and a limiting shaft is fixedly installed on the connecting rod, with the limiting shaft slidably sleeved in the guide groove.

[0020] The beneficial effects of adopting the above-mentioned further solutions are:

[0021] The connecting rod and the reinforcing frame are sleeved together, and the limiting shaft slides in the guide groove, forming a movable connection structure. When the fastening nut moves helically to press the first mounting block, the first mounting block can drive the connecting rod to drive the reinforcing frame to unfold through the limiting shaft, so that the reinforcing frame is pressed and fixed in the first precast component body and the second precast component body after unfolding.

[0022] Furthermore, a fastening nut is threaded onto the connecting screw, and the fastening nut compresses and limits the first mounting block.

[0023] The beneficial effects of adopting the above-mentioned further solutions are:

[0024] The fastening nut, screwed onto the connecting rod, exerts a compressive force on the first mounting block, tightly connecting the first and second precast component bodies together via the unfolded reinforcing frame. This mechanical fastening method allows for adjustment of the fastening force according to actual needs, ensuring a tight connection between the precast components. A larger fastening force effectively increases the friction at the connection points, preventing loosening of the precast components due to vibration, load changes, or other factors during use, thus guaranteeing the reliability and stability of the connection.

[0025] Furthermore, a spring washer is fitted onto the connecting screw, and the spring washer limits the position of the fastening nut.

[0026] The beneficial effects of adopting the above-mentioned further solutions are:

[0027] The spring washer is elastic. After the fastening nut is tightened, the spring washer is compressed and undergoes elastic deformation, thereby applying a reverse elastic force to the fastening nut. This elastic force can effectively prevent the fastening nut from loosening and rotating under external forces such as vibration and impact, playing a role in preventing loosening, improving the reliability and stability of the connection of UHPC precast components, and reducing safety hazards caused by loose nuts.

[0028] This utility model provides a UHPC prefabricated component. It has the following beneficial effects:

[0029] By using the interlocking of protrusions and insertions and filling with mortar, precise positioning and strong bonding between precast components are achieved, effectively dispersing the load and enhancing the shear and tensile strength of the connection parts; the setting of tie bars further improves the stability and seismic resistance of the components under tensile force.

[0030] Two sets of first and second mounting blocks work together with connecting screws to ensure a secure connection of the precast components. The movable connection structure, consisting of the connecting rod, reinforcing frame, limiting shaft, and guide groove, allows the reinforcing frame to unfold and firmly press into the precast component under the pressure of the fastening nut, significantly improving connection strength. Spring washers prevent loosening of the fastening nut, ensuring long-term reliability of the connection and preventing loosening and detachment after prolonged use. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0032] In the attached diagram:

[0033] Figure 1 This is a side view of the present invention;

[0034] Figure 2 This is a front view schematic diagram of the present invention;

[0035] Figure 3 This is an enlarged schematic diagram of the connecting screw of this utility model.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. First precast component body; 101. Insert block; 2. Second precast component body; 201. Protrusion; 3. Connecting screw; 301. Fastening nut; 302. Spring washer; 303. First mounting block; 304. Second mounting block; 305. Limiting shaft; 306. Reinforcing frame; 307. Connecting rod; 308. Mounting frame; 309. Guide groove; 4. Tie bar. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figures 1 to 3 As shown, the embodiments provided by this utility model are as follows:

[0040] Example 1

[0041] A UHPC prefabricated component includes a first prefabricated component body 1 and a second prefabricated component body 2. The first prefabricated component body 1 is provided with an insert 101, and the second prefabricated component body 2 is provided with a protrusion 201.

[0042] A connecting screw 3 is slidably sleeved inside the first precast component body 1 and the second precast component body 2. A first mounting block 303 and a second mounting block 304 are slidably sleeved on the connecting screw 3. A reinforcing frame 306 is installed at both ends of the second mounting block 304 through a pin. A guide groove 309 is opened in the reinforcing frame 306. A connecting rod 307 is fixedly installed at both ends of the first mounting block 303 through a mounting frame 308.

[0043] The protrusion 201 is fitted into the insert 101. The gap between the insert 101 and the protrusion 201, as well as the bodies of the first and second precast components, are filled with mortar. The fitting of the protrusion 201 and the insert 101 forms a preliminary positioning structure between the precast components, ensuring precise connection. The mortar filling the gaps and the bodies of the precast components, after hardening, tightly fills the voids, enhancing the bond between components and forming a unified load-bearing structure. This connection method effectively disperses external loads, reduces stress concentration, and improves the shear and tensile strength of the precast component connection points. This makes the connection points less prone to damage when the UHPC precast components are subjected to large loads, improving the overall structural stability and load-bearing capacity. Simultaneously, the mortar filling also acts as a seal, preventing moisture and corrosive media from penetrating the connection points, enhancing the durability and service life of the components.

[0044] A tie bar 4 is slidably inserted into the insert block 101 and slidably inserted into the protrusion 201. The tie bar 4 passes through both the insert block 101 and the protrusion 201, effectively adding a connecting structure between the two precast components. When the precast component is subjected to tensile force, the tie bar 4 can directly bear the tensile force and transfer it to the adjacent precast component, preventing relative displacement or separation between the insert block 101 and the protrusion 201 due to excessive tensile force. In addition, the combined effect of the tie bar 4 and the mortar can enhance the toughness of the connection parts of the precast components, giving them better deformation coordination ability when subjected to dynamic loads such as earthquakes, reducing cracks caused by inconsistent deformation, and improving the seismic performance and safety of the entire structure.

[0045] Example 2

[0046] To ensure a tighter connection between prefabricated components and prevent loosening and detachment during prolonged use, for example, such as Figures 1 to 3 As shown, this utility model also includes:

[0047] Two sets of first mounting blocks 303 and second mounting blocks 304 are provided. The two sets of first mounting blocks 303 and second mounting blocks 304 are respectively set in the first precast component body 1 and the second precast component body 2. The two sets of first mounting blocks 303 and second mounting blocks 304 can form a connection point in the two precast components, so that the connecting screw 3 can connect the two precast components.

[0048] The connecting rod 307 is sleeved inside the reinforcing frame 306. A limiting shaft 305 is fixedly installed on the connecting rod 307. The limiting shaft 305 is slidably sleeved in the guide groove 309. The sleeved engagement of the connecting rod 307 and the reinforcing frame 306, and the sliding of the limiting shaft 305 in the guide groove 309, form a movable connection structure. When the fastening nut 301 is spirally moved to press the first mounting block 303, the first mounting block 303 can drive the connecting rod 307 to drive the reinforcing frame 306 to unfold through the limiting shaft 305. After unfolding, the reinforcing frame 306 is pressed and fixed inside the first precast component body 1 and the second precast component body 2.

[0049] A fastening nut 301 is threaded onto the connecting screw 3. The fastening nut 301 compresses and limits the first mounting block 303. Tightly screwed onto the connecting screw 3, the fastening nut 301 exerts a compressive force on the first mounting block 303, tightly connecting the first precast component body 1 and the second precast component body 2 together via the unfolded reinforcing frame 306. This mechanical fastening method allows for adjustment of the fastening force according to actual needs, ensuring the tightness of the precast component connection. A larger fastening force effectively increases the friction at the connection points, preventing loosening of the precast components due to vibration, load changes, or other factors during use, thus ensuring the reliability and stability of the connection.

[0050] A spring washer 302 is fitted onto the connecting screw 3. The spring washer 302 limits the position of the fastening nut 301. The spring washer 302 is elastic. After the fastening nut 301 is tightened, the spring washer 302 is compressed and undergoes elastic deformation, thereby applying a reverse elastic force to the fastening nut 301. This elastic force can effectively prevent the fastening nut 301 from loosening and rotating under the action of external forces such as vibration and impact, playing an anti-loosening role, improving the reliability and stability of the connection of UHPC precast components, and reducing safety hazards caused by loose nuts.

[0051] Working principle:

[0052] Preliminary positioning and bonding: The protrusion 201 is fitted into the insert 101 to complete the preliminary positioning of the first precast component body 1 and the second precast component body 2, ensuring the accuracy of the connection. Subsequently, mortar is filled into the gaps between the insert 101 and the protrusion 201, as well as into the first precast component body 1 and the second precast component body 2. However, the position where the connecting screw 3 is installed is not filled during mortar filling to avoid affecting the later use of the connecting screw 3. After the mortar hardens, the gaps are tightly filled to enhance the bonding force between the components, form an integral load-bearing structure, effectively disperse external loads, and reduce stress concentration.

[0053] Enhanced tensile strength and seismic performance: A tie bar 4 is slidably inserted into the insert 101 and then into the protrusion 201. When the precast component is subjected to tensile force, the tie bar 4 directly bears the tensile force and transfers it to adjacent precast components, preventing relative displacement or separation between the insert 101 and the protrusion 201. Simultaneously, the tie bar 4, together with the mortar, enhances the toughness of the connection, improving the structure's deformation coordination and seismic performance under dynamic loads.

[0054] Construction and reinforcement of connection points: Two sets of first mounting blocks 303 and second mounting blocks 304 are respectively installed inside the first precast component body 1 and the second precast component body 2, forming connection points in cooperation with the connecting screw 3. The connecting rod 307 is sleeved inside the reinforcing frame 306, and the limiting shaft 305 is slidably sleeved inside the guide groove 309. When the fastening nut 301 moves spirally to press the first mounting block 303, the first mounting block 303 drives the connecting rod 307, which in turn drives the reinforcing frame 306 to unfold via the limiting shaft 305, thus pressing and fixing the reinforcing frame 306 inside the first precast component body 1 and the second precast component body 2, improving the connection strength.

[0055] Tightening and Anti-Loosening: The fastening nut 301 is screwed onto the connecting screw 3, generating a compressive force on the first mounting block 303, thus tightly connecting the first precast component body 1 and the second precast component body 2 through the unfolded reinforcing frame 306. The spring washer 302 sleeved on the connecting screw 3 is compressed after the fastening nut 301 is tightened, generating a reverse elastic force to prevent the fastening nut 301 from loosening or rotating under external forces such as vibration and impact, ensuring the long-term reliability of the connection.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A UHPC prefabricated component, comprising a first prefabricated component body (1) and a second prefabricated component body (2), wherein the first prefabricated component body (1) is provided with an insert (101) and the second prefabricated component body (2) is provided with a protrusion (201), characterized in that: A connecting screw (3) is slidably sleeved inside the first precast component body (1) and the second precast component body (2). A first mounting block (303) and a second mounting block (304) are slidably sleeved on the connecting screw (3). A reinforcing frame (306) is installed at both ends of the second mounting block (304) through a pin. A guide groove (309) is provided in the reinforcing frame (306). A connecting rod (307) is fixedly installed at both ends of the first mounting block (303) through a mounting frame (308).

2. The UHPC precast member of claim 1, wherein: The protrusion (201) is fitted inside the insert (101), and the gap between the insert (101) and the protrusion (201) and the first precast component body (1) and the second precast component body (2) are filled with mortar.

3. The UHPC precast member of claim 2, wherein: A tie bar (4) is slidably inserted into the insert (101), and the tie bar (4) is slidably inserted into the protrusion (201).

4. The UHPC precast member of claim 1, wherein: The first mounting block (303) and the second mounting block (304) are provided in two sets, and the first mounting block (303) and the second mounting block (304) are respectively disposed in the first precast component body (1) and the second precast component body (2).

5. The UHPC precast member of claim 1, wherein: The connecting rod (307) is sleeved in the reinforcing frame (306), and a limiting shaft (305) is fixedly installed on the connecting rod (307). The limiting shaft (305) is slidably sleeved in the guide groove (309).

6. The UHPC precast member of claim 1, wherein: A fastening nut (301) is threadedly installed on the connecting screw (3), and the fastening nut (301) presses and limits the first mounting block (303).

7. The UHPC precast member of claim 6, wherein: A spring washer (302) is fitted onto the connecting screw (3), and the spring washer (302) limits the position of the fastening nut (301).

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