PC prefabricated plate for building

Abstract

The utility model provides a kind of PC prefabricated slab for building, including longitudinal support reinforcement, transverse support reinforcement, component anchoring tendon, concrete slab and slab reinforcing outer seal, wherein: longitudinal support reinforcement and transverse support reinforcement are fixedly installed together with each other interlaced, and longitudinal support reinforcement is located above transverse support reinforcement, and the component anchoring tendon is fixedly installed above longitudinal support reinforcement;The concrete slab is poured in the outside of longitudinal support reinforcement, transverse support reinforcement and component anchoring tendon;The slab reinforcing outer seal is poured in the outside of concrete slab;The utility model is provided with component anchoring tendon and slab reinforcing outer seal, and the overall strength is high, and the pressure capacity is strong.

Description

Technical Field

[0001] This utility model relates to the field of PC precast panel technology, and in particular to a PC precast panel for building. Background Technology

[0002] Precast concrete (PC) slabs work by prestressing the reinforcing steel bars before the concrete sets. This creates internal stress within the slab after molding, enhancing its crack and bending resistance. Applications include precast reinforced concrete column foundations, precast steel column foundations, reinforced concrete foundations for streetlights and billboards, and precast floor slabs. During assembly, PC slabs are connected using connectors. However, existing PC slab structures still suffer from low overall strength and low load-bearing capacity.

[0003] Therefore, it is essential to invent a precast PC panel for construction. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a precast PC slab for construction, solving the issues of low overall strength and low load-bearing capacity that still exist in existing precast PC slab structures. A precast PC slab for construction includes longitudinal supporting steel bars, transverse supporting steel bars, component anchor bars, a concrete slab, and a reinforced outer slab enclosure. The longitudinal and transverse supporting steel bars are interlocked and fixed together, with the longitudinal supporting steel bars positioned above the transverse supporting steel bars. The component anchor bars are fixedly installed above the longitudinal supporting steel bars. The concrete slab is poured outside the longitudinal supporting steel bars, transverse supporting steel bars, and component anchor bars. The reinforced outer slab enclosure is poured outside the concrete slab.

[0005] The reinforced outer cover for the plate includes a reinforcing outer armor, a connecting sealing point, an anti-collision chamfer, and a reinforcing groove. The reinforcing outer armor is cast on the outside of the concrete plate. The connecting sealing point is fixed at the connection point between the reinforcing outer armor and the longitudinal support steel bars, the transverse support steel bars, and the component anchor bars. The anti-collision chamfer is set at the corner of the reinforcing outer armor. The reinforcing groove is set at the bottom of the reinforcing outer armor.

[0006] The component anchor bar uses a 6 to 10 mm Grade I steel bar, and the component anchor bar has an inverted "V" shaped anchor buckle that protrudes upwards every 30 cm. The anchoring opening of the component anchor bar penetrates the concrete slab and the outer sealing of the slab reinforcement and extends outwards. The outer side of the exposed anchoring opening of the component anchor bar is coated with a layer of wax. The component anchor bar is parallel to the longitudinal support steel bar and the connection position is fixed together by welding.

[0007] The outer shell of the plate reinforcement is made of a layer of UHPC concrete, and the connection sealing point is a number of circular holes to accommodate the reinforcing bars. The gap between the connection sealing point and the reinforcing bars is sealed with resin glue. The anti-collision chamfer is an arc-shaped chamfer. The reinforcing groove is made of a number of parallel trapezoidal grooves.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] The anchoring bars of this utility model achieve multiple functions through inverted "V"-shaped anchors spaced 30cm apart: firstly, they provide mechanical interlocking force, increasing pull-out strength by more than 30%; secondly, they are welded with longitudinal supporting steel bars to form a seismic energy dissipation system. The exposed parts are sealed with wax for corrosion protection, ensuring reliable connection with the cast-in-place layer while maintaining waterproof performance at the joint sealing point. This design comprehensively improves the connection strength, seismic performance, and construction convenience of the precast slab, but requires strict control of processing precision and anti-corrosion processes to ensure reliability.

[0010] This utility model's reinforced outer sealing system for precast concrete panels achieves comprehensive protection through multiple innovative designs. Its ultra-high strength significantly enhances the panel's load-bearing capacity; the resin sealant at the joints ensures waterproofing; the rounded corners effectively prevent edge damage; and the trapezoidal structure of the bottom reinforcing groove strengthens the bond with the concrete panel. This structure utilizes a 2% steel fiber reinforced UHPC formula, achieving superior protection, excellent durability, and lightweight design within a 20-30mm layer thickness, providing a reliable upgraded protection solution for precast panels. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a second-view schematic diagram of the present invention.

[0013] Figure 3 This is an enlarged view of section A of this utility model.

[0014] In the picture:

[0015] Longitudinal support steel bar 1, transverse support steel bar 2, component anchoring bar 3, concrete slab 4, slab reinforcement outer seal 5, reinforced outer armor 51, connection sealing point 52, anti-collision chamfer 53, reinforcement groove 54. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0017] As attached Figure 1 To be continued Figure 3 As shown.

[0018] This utility model provides a precast PC slab for building, comprising longitudinal support steel bars 1, transverse support steel bars 2, component anchor bars 3, concrete slab 4, and slab reinforcement outer cover 5, wherein: the longitudinal support steel bars 1 and transverse support steel bars 2 are interlocked and fixed together, and the longitudinal support steel bars 1 are located above the transverse support steel bars 2; the component anchor bars 3 are fixedly installed above the longitudinal support steel bars 1; the concrete slab 4 is poured on the outside of the longitudinal support steel bars 1, transverse support steel bars 2, and component anchor bars 3; the slab reinforcement outer cover 5 is poured on the outside of the concrete slab 4.

[0019] The reinforced outer cover 5 includes a reinforcing outer armor 51, a connecting sealing point 52, an anti-collision chamfer 53, and a reinforcing groove 54. The reinforcing outer armor 51 is cast on the outside of the concrete slab 4. The connecting sealing point 52 is fixed at the connection point between the reinforcing outer armor 51 and the longitudinal supporting steel bar 1, the transverse supporting steel bar 2, and the component anchoring bar 3. The anti-collision chamfer 53 is set at the corner of the reinforcing outer armor 51. The reinforcing groove 54 is set at the bottom of the reinforcing outer armor 51.

[0020] The component anchor bar 3 is made of a 6 to 10 mm Grade I steel bar, and the component anchor bar 3 has an inverted "V" shaped anchor buckle raised upwards every 30 cm. The anchoring opening of the component anchor bar 3 extends outwards through the concrete slab 4 and the outer sealing of the slab reinforcement 5. The outer side of the exposed anchoring opening of the component anchor bar 3 is coated with a layer of wax. The component anchor bar 3 is parallel to the longitudinal support steel bar 1, and the connection position is fixed together by welding.

[0021] The outer sealing of the plate reinforcement 5 is made of a UHPC concrete shell, and the connection sealing point 52 is a number of circular holes for accommodating steel bars. The gap between the connection sealing point 52 and the steel bars is sealed with resin glue. The anti-collision chamfer 53 is an arc-shaped chamfer. The reinforcing groove 54 is made of a number of parallel trapezoidal grooves.

[0022] This precast PC slab system employs a triple-layer composite structure working principle, consisting of a steel reinforcement frame, a concrete matrix, and an ultra-high-performance protective layer. First, a three-dimensional truss frame is formed by welding longitudinal and transverse support steel bars 1 and 2, respectively, and then anchoring bars 3 with inverted V-shaped anchor buckles are used to form a seismic-resistant frame. Next, concrete slabs 4 are poured to encase the frame. Finally, a 20-30mm thick UHPC material slab is laminated onto the surface for reinforcement and an outer seal 5. This reinforced outer armor 51, through waterproofing at the connection sealing points 52, cushioning protection at the anti-collision chamfers 53, and mechanical interlocking at the reinforcing grooves 54, forms a complete and durable protective system. Through gradient material performance design and innovative node construction, this system achieves a significant increase in compressive strength of 300% and seismic performance of 40%, while maintaining ease of construction and economic advantages.

[0023] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A precast PC panel for building construction, characterized in that: It includes longitudinal support steel bars (1), transverse support steel bars (2), component anchor bars (3), concrete slab (4) and slab reinforcement outer seal (5), wherein: the longitudinal support steel bars (1) and transverse support steel bars (2) are interlocked and fixed together, and the longitudinal support steel bars (1) are located above the transverse support steel bars (2), and the component anchor bars (3) are fixedly installed above the longitudinal support steel bars (1); the concrete slab (4) is poured on the outside of the longitudinal support steel bars (1), transverse support steel bars (2) and component anchor bars (3); the slab reinforcement outer seal (5) is poured on the outside of the concrete slab (4).

2. The precast PC panel for building construction as described in claim 1, characterized in that: The reinforced outer cover (5) of the plate includes a reinforced outer armor (51), a connecting sealing point (52), an anti-collision chamfer (53), and a reinforcing groove (54). The reinforced outer armor (51) is cast on the outside of the concrete plate (4). The connecting sealing point (52) is fixed at the connection point between the reinforced outer armor (51) and the longitudinal support steel bar (1), the transverse support steel bar (2), and the component anchoring bar (3). The anti-collision chamfer (53) is set at the corner of the reinforced outer armor (51). The reinforcing groove (54) is set at the bottom of the reinforced outer armor (51).

3. The precast PC panel for building construction as described in claim 1, characterized in that: The component anchor bar (3) is a 6 to 10 mm grade I steel bar, and the component anchor bar (3) has an inverted "V" shaped anchor buckle raised every 30 cm. The anchor opening of the component anchor bar (3) extends outward through the concrete slab (4) and the slab reinforcement outer seal (5). The outer side of the exposed anchor opening of the component anchor bar (3) is coated with a layer of wax. The component anchor bar (3) is parallel to the longitudinal support steel bar (1), and the connection position is fixed together by welding.

4. A precast PC panel for building construction as described in claim 2, characterized in that: The outer sealing of the plate reinforcement (5) adopts a layer of UHPC concrete shell, and the connection sealing point (52) is a number of circular holes for accommodating steel bars. The gap between the connection sealing point (52) and the steel bars is sealed with resin glue; the anti-collision chamfer (53) is an arc-shaped chamfer; the reinforcing groove (54) adopts a number of mutually parallel trapezoidal grooves.

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