Tapered hole-reserved rear rib grouting PC (Polycarbonate) laminated slab

Abstract

The PC laminated slab with the conical reserved holes and the grouting rear ribs comprises a prefabricated layer and a cast-in-place layer, the cast-in-place layer is located on the prefabricated layer, and the PC laminated slab is characterized in that the PC laminated slab further comprises the rear ribs, the rear ribs are in a folded shape, and each rear rib comprises a horizontal section and a lower folded section; a conical hole is reserved in the prefabricated layer, the upper portion of the conical hole is large, the lower portion of the conical hole is small, the top face of the conical hole is located on the top face of the prefabricated layer, the bottom face of the conical hole is located on the side face of the prefabricated layer, the horizontal section of the rear rib is located on the top face of the prefabricated layer, the lower folding section of the rear rib penetrates through the conical hole, and the conical hole is filled with grouting materials. According to the utility model, the structural safety and the construction efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of fabricated building relates to a PC laminated board of conical hole remaining post -positioned reinforcement grouting. BACKGROUND

[0002] In the traditional PC laminated board construction, the exposed reserved steel bar anchoring and binding problem has been a construction problem. The existing technology usually adopts the pre -buried muscle way, but this method has many inconveniences in the construction process, such as the conflict between the reserved anchoring steel bar and the longitudinal steel bar of beam surface, resulting in low construction efficiency and reduced structural safety. SUMMARY

[0003] In order to overcome the insufficient technology, the utility model provides a PC laminated board of conical hole remaining post -positioned reinforcement grouting, improves structural safety and construction efficiency.

[0004] The utility model discloses the technical scheme that solves its technical problem adopts:

[0005] A PC laminated board of conical hole remaining post -positioned reinforcement grouting, including prefabricated layer and cast-in-place layer, the cast-in-place layer is located on prefabricated layer, and its characterized in that, the PC laminated board still includes post -positioned reinforcement, and the post -positioned reinforcement is folded, and the post -positioned reinforcement includes horizontal section and lower folded section;The conical hole is reserved on the prefabricated layer, and the conical hole is large from top to bottom, and the top surface of the conical hole is located on the top surface of the prefabricated layer, and the bottom surface of the conical hole is located on the side surface of the prefabricated layer, and the horizontal section of the post -positioned reinforcement is located on the top surface of the prefabricated layer, and the lower folded section of the post -positioned reinforcement passes through the conical hole, and the conical hole fills grouting material.

[0006] Further, the lower folded section of the post -positioned reinforcement is provided with a rubber sealing ring, and the rubber sealing ring blocks the bottom opening of the conical hole.

[0007] Preferably, the outer diameter of the post -positioned reinforcement is smaller than the bottom opening of the conical hole, the outer diameter of the rubber sealing ring is larger than the bottom opening of the conical hole, and the outer diameter of the rubber sealing ring is smaller than the top opening of the conical hole.

[0008] Still further, the grouting material is a non - shrinkage grouting material.

[0009] The utility model has the advantages that structural safety and construction efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural schematic diagram of the PC laminated board of conical hole remaining post -positioned reinforcement grouting of the utility model. DETAILED DESCRIPTION

[0011] The utility model will be further described below in connection with the drawings.

[0012] Referring to Figure 1 A PC composite slab with post-set reinforcement and conical hole grouting, comprising a prefabricated layer 1 and a cast-in-place layer 2, the cast-in-place layer 2 being located on the prefabricated layer 1, the PC composite slab further comprising a post-set reinforcement 11, the post-set reinforcement 11 being in a folded shape, the post-set reinforcement 11 comprising a horizontal segment and a lower folded segment; a conical hole 12 is reserved on the prefabricated layer 1, the conical hole 12 being large at the top and small at the bottom, the top surface of the conical hole 12 being located on the top surface of the prefabricated layer 1, the bottom surface of the conical hole 12 being located on the side surface of the prefabricated layer 1, the horizontal segment of the post-set reinforcement 11 being located on the top surface of the prefabricated layer 1, the lower folded segment of the post-set reinforcement 11 passing through the conical hole 12, and the conical hole 12 being filled with grouting material 13.

[0013] Further, the lower folded segment of the post-set reinforcement 11 is sleeved with a rubber sealing ring 14, and the rubber sealing ring 14 blocks the bottom opening of the conical hole 12.

[0014] The outer diameter of the post-set reinforcement 11 is smaller than the bottom opening of the conical hole 12, the outer diameter of the rubber sealing ring 14 is larger than the bottom opening of the conical hole 12, and the outer diameter of the rubber sealing ring 14 is smaller than the top opening of the conical hole 12.

[0015] Still further, the grouting material 13 is non-shrinkage grouting material.

[0016] The manufacturing process of the PC composite slab with post-set reinforcement and conical hole grouting of the present embodiment comprises the following steps:

[0017] Step one, manufacturing the prefabricated layer 1: manufacturing the prefabricated layer 1 on a platform mold, and forming a conical hole 12 on the prefabricated layer by using the conical hole reservation technology, the conical hole 12 being large at the top and small at the bottom, the top surface of the conical hole 12 being located on the top surface of the prefabricated layer 1, and the bottom surface of the conical hole 12 being located on the side surface of the prefabricated layer 1;

[0018] In the step one, the position, size and shape of the reserved conical hole are ensured to meet the design requirements by pre-installing a conical sleeve, the conical sleeve being fixed in the mold before the concrete pouring of the prefabricated layer to ensure that they maintain the correct position and angle during the pouring process; after the concrete solidifies, the conical sleeve is taken out, leaving the designed conical hole 12 to provide accurate positioning for the post-set reinforcement.

[0019] Preferably, the conical sleeve is connected to the prefabricated platform side mold by screwing.

[0020] The conical sleeve is made of durable materials such as high-density polyethylene or steel to ensure durability and high turnover.

[0021] Step two, manufacturing the post-set reinforcement 11, the post-set reinforcement 11 being in a folded shape, the post-set reinforcement 11 comprising a horizontal segment and a lower folded segment;

[0022] Step three, the post-anchoring of the rear-anchoring rib in the conical hole: the rear-anchoring rib 11 is inserted into the conical hole 12, the horizontal section of the rear-anchoring rib 11 is located on the top surface of the prefabricated layer 1, the lower folded section of the rear-anchoring rib 11 penetrates through the conical hole 12, and then the conical hole 12 is grouted and sealed by grouting material 13.

[0023] In step three, the lower folded section of the rear-anchoring rib 11 is sleeved with a rubber sealing ring 14, and after the rear-anchoring rib 11 is inserted into the conical hole 12, the rubber sealing ring 14 blocks the bottom opening of the conical hole 12.

[0024] Step four, pouring the cast-in-place layer 2 on the prefabricated layer 1, and the manufacturing process of the cast-in-place layer 2 is realized by using the existing technology. The cast-in-place layer 2 can be poured and formed at the same time as the cast-in-place beam 3.

[0025] The present embodiment adopts the reserved conical hole technology, and the PC composite slab factory uses the reserved conical hole technology on the bench mold to form standard and neat conical holes. This technology can form accurate conical holes by pre-burying conical sleeves on the bench mold, and the conical sleeves can be removed after the concrete is poured and vibrated, which can provide accurate positioning for the rear-anchoring rib.

[0026] The reserved conical hole technology of the present embodiment ensures that the position, size and shape of the reserved hole meet the design requirements through the pre-installed conical sleeves. The key advantage of this technology is that it can provide accurate positioning, which is crucial for the stability and safety of the subsequent structure. The pre-buried sleeves are usually made of durable materials such as high-density polyethylene or steel to ensure durability and high turnover. Before pouring the concrete, these conical sleeves are fixed in the bench side mold to ensure that they maintain the correct position and angle during the pouring process. After the concrete solidifies, the conical sleeves are removed, leaving a designed conical hole that provides accurate positioning for the rear-anchoring rib. This method not only improves construction efficiency and quality control, but also reduces material waste and construction costs.

[0027] The present embodiment realizes the guarantee of construction quality and the improvement of construction efficiency through the rear-anchoring rib method. This method can reduce the bending of the reserved rib during the hoisting of the fabricated PC prefabricated slab and the quality defects such as concrete damage caused by bending.

[0028] The present utility model uses the rear-anchoring rib method technology, which ensures engineering quality and improves construction efficiency through careful design of the rear-anchoring rib layout. The core of this method is the non-traditional staggered rear-anchoring rib arrangement. The application of the staggered rear-anchoring rib method not only optimizes the construction process, but also improves the flexibility and safety of the operation by reducing interference and conflicts during construction. In addition, this technology helps to shorten the project cycle and improve construction efficiency by reducing the amount of on-site work, while ensuring the stability and durability of the building structure.

[0029] The cone-shaped hole of the embodiment is designed in a horn type, the reinforcing bar socket is designed as a cone-shaped hole (horn type), the upper opening is large, the lower opening is small, a rubber sealing ring is sleeved on the rear reinforcing bar to block the small bottom side of the opening, and the cone-shaped hole is sealed by pouring M60 grouting material after the rear reinforcing bar is installed. The cone-shaped hole (horn type) design is used for the insertion of additional reinforcing bars and the fixing of rubber sealing rings on the reinforcing bars, and the overall strength of the structure is improved. This design not only simplifies the construction process, but also improves the durability and safety of the structure, and is an innovative technology with great application value in the assembled PC prefabricated slab.

[0030] The embodiment of the utility model discloses:

[0031] 1) Reserved cone-shaped hole: in the prefabrication stage of PC composite slab, according to the requirement of design drawing, accurately reserve the cone-shaped mould in the pedestal side mould, and form the cone-shaped hole after pouring and tamping concrete. This step is the key to realize the rear reinforcing bar technology, because the design of the cone-shaped hole directly affects the installation of the rear reinforcing bar and the overall performance of the structure. When designing, the diameter, number and required mechanical properties of the reinforcing bar need to be considered to ensure that the hole can adapt to reinforcing bars of different diameters and lengths. For this purpose, a mould matching the design of the cone-shaped hole is made, and the mould material needs to have sufficient strength and rigidity to maintain its shape unchanged and facilitate connection and removal with the platform mould. Before pouring concrete, the mould is placed in the correct position and fixed firmly to prevent displacement during pouring.

[0032] 2) Rear reinforcing bar insertion: after the concrete reaches a certain strength, the rear reinforcing bar is inserted. This step requires accurate operation to ensure that the rear reinforcing bar is correctly placed in the cone-shaped hole. According to the design requirements, reinforcing bars of corresponding diameter and length are prepared as rear reinforcing bars, and the surface of the rear reinforcing bar is cleaned and rusted. The rear reinforcing bar is inserted into the reserved cone-shaped hole using special tools or equipment to ensure that the insertion depth and position of the rear reinforcing bar meet the design requirements.

[0033] 3) Rear reinforcing bar fixing: the cone-shaped hole is sprayed with water, the rubber sealing ring is sleeved on the lower folded section of the rear reinforcing bar, the rubber sealing ring blocks the bottom opening of the cone-shaped hole after the rear reinforcing bar is inserted into the cone-shaped hole, and the position of the rear reinforcing bar is finally checked and adjusted after the rear reinforcing bar is inserted to ensure that it meets the design requirements. Then, the cone-shaped hole is sealed by pouring grouting material, and water is poured for maintenance.

[0034] 4) Subsequent concrete pouring: after the rear reinforcing bar is fixed, subsequent concrete pouring is carried out to complete the construction of the composite slab. Before pouring, the construction site is cleaned to ensure that there are no foreign matters affecting the pouring quality of the concrete. Pouring is carried out according to the standard concrete construction process to ensure that the concrete is uniformly filled and avoid voids and cracks. After pouring is completed, the concrete is properly maintained to ensure that it reaches the design strength.

[0035] Through the above steps, the PC laminated slab cone hole leaving rib process of the embodiment not only improves the construction efficiency, but also enhances the safety and reliability of the structure. The process realizes the good combination between the steel bars and the concrete by optimizing the hole design and the construction method of the post-rib, improves the overall performance of the structure. In addition, the process also uses fiber reinforced materials and super-strong UHPC materials, further improves the mechanical properties and bending stiffness of the laminated slab, and brings an innovative solution to the field of building structures.

[0036] The content described in the embodiments of the present specification is only a list of implementation forms of the utility model concept, and is only for the purpose of description. The protection scope of the utility model should not be regarded as limited to the specific forms stated in the embodiments, and the protection scope of the utility model also extends to the equivalent technical means that can be thought of by those skilled in the art according to the utility model concept.

Claims

1. A PC composite slab of post-tensioned post-tendon grouting with conical hole, comprising a prefabricated layer and a cast-in-place layer, the cast-in-place layer being located on the prefabricated layer, characterized in that, The PC composite board further comprises a post-arranged rib, the post-arranged rib is in a folded shape, and the post-arranged rib comprises a horizontal section and a lower folded section; a conical hole is reserved on the prefabricated layer, the conical hole is large at the top and small at the bottom, the top surface of the conical hole is located on the top surface of the prefabricated layer, the bottom surface of the conical hole is located on the side surface of the prefabricated layer, the horizontal section of the post-arranged rib is located on the top surface of the prefabricated layer, the lower folded section of the post-arranged rib passes through the conical hole, and the conical hole is filled with grouting material.

2. The PC composite slab of post-tensioned tendon grouting with conical hole according to claim 1, characterized in that, The lower folded section of the post-arranged rib is sleeved with a rubber sealing ring, and the rubber sealing ring blocks the bottom opening of the conical hole.

3. The PC composite slab of post-tensioned tendon grouting with conical hole according to claim 2, characterized in that, The outer diameter of the post-arranged rib is smaller than the bottom opening of the conical hole, the outer diameter of the rubber sealing ring is larger than the bottom opening of the conical hole, and the outer diameter of the rubber sealing ring is smaller than the top opening of the conical hole.

4. The PC composite slab of post-tensioned tendon grouting with cone-shaped holes according to claim 1 or 2, characterized in that, The grouting material is non-shrinkage grouting material.

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