Prefabricated connecting device for prefabricated floor support plate of nuclear power station

Abstract

The utility model relates to the technical field of buildings, and discloses a prefabricated connecting device for a prefabricated floor support plate of a nuclear power station, which comprises a hollow plastic template, the bottom of the hollow plastic template is fixedly connected with a supporting rib, and the supporting rib is fixedly connected with a connecting rod. The side, away from the supporting rib, of the hollow plastic formwork is fixedly connected with a cement cushion block, the top of the cement cushion block is fixedly connected with a hanging bracket, the interior of the hanging bracket is in threaded connection with a screw, the interior of the hanging bracket is fixedly connected with an inserting plate, and the top of the hanging bracket is fixedly connected with a fixing ring. And the interior of the fixing ring is in threaded connection with a bolt. In the utility model, the diameter of the stressed steel bar used by the super-thick floor slab of the nuclear power station is 32mm, the connecting piece can meet the connection of the steel bars with the diameter of 32 or less, the metal connecting piece needs to meet the requirement of bearing capacity through strength calculation and test verification, and the fixing rings are arranged outside the hanging bracket and on the two sides to prevent the web member from shaking in the hanging bracket.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to a prefabrication connection device for prefabricated floor decking of nuclear power plants. Background Technology

[0002] Nuclear power plants typically consist of multiple building units, including control rooms, reactor buildings, auxiliary facilities, and storage areas. These structures require extremely high load-bearing capacity, seismic resistance, and long-term stability during design. Precast floor decking, as a component of these building units, plays a crucial role in the load distribution and seismic design of the entire structure. The application of precast connection devices enables these deckings to be quickly and accurately connected and fixed, ensuring the overall structural strength and stability of the building.

[0003] A prefabrication connection device for prefabricated floor decking in nuclear power plants includes a hollow plastic template, ribs, cement blocks, hangers, etc. The working principle of the prefabrication connection device for prefabricated floor decking in nuclear power plants is to quickly, safely and stably connect each prefabricated decking on site through a pre-set connection interface and a precision-designed connection component. The key advantages of this device are its high efficiency, standardization and safety, which can ensure the stability, seismic resistance and long-term safe operation of the nuclear power plant building structure.

[0004] In existing technologies, some prefabricated connection devices lack rigorous calculation and experimental verification in the strength design of steel bar connections, making it difficult to meet the high requirements for load-bearing capacity and safety in the special environment of nuclear power plants. When the diameter of the steel bars is 32mm or less, the connection method often cannot ensure sufficient load-bearing capacity due to factors such as the number and arrangement of the steel bars. Although current metal connectors can play a connecting role, in terms of load-bearing capacity calculation and experimental verification, they often fail to fully consider the extreme working conditions that may occur in actual use. This leads to some connectors being prone to deformation or breakage under excessive load or uneven stress, posing certain safety hazards. Furthermore, existing hanger connection devices have not effectively solved the problem of web member swaying that occurs during actual construction and use. If effective anti-swaying measures are not taken during the installation of web members, the web members are prone to positional deviation, affecting the installation accuracy and connection quality of the entire prefabricated floor deck. Especially during hoisting, the swaying of web members can not only cause equipment damage but also pose safety hazards to construction personnel. Therefore, a prefabricated connection device for nuclear power plant prefabricated floor decks is proposed to solve the above problems. Utility Model Content

[0005] This utility model proposes a prefabrication connection device for prefabricated floor decking in nuclear power plants, which aims to improve the problem that some existing devices can only meet the connection of steel bars of fixed diameter and will shake inside them.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A prefabricated connection device for prefabricated floor deck slabs in nuclear power plants includes a hollow plastic template. A support rib is fixedly connected to the bottom of the hollow plastic template. A cement block is fixedly connected to the side of the hollow plastic template away from the support rib. A hanger is fixedly connected to the top of the cement block. A screw is threaded into the hanger. An insert plate is fixedly connected into the hanger. A fixing ring is fixedly connected to the top of the hanger. A bolt is threaded into the fixing ring.

[0008] As a further description of the above technical solution:

[0009] The bottom of the fixing ring is fixedly connected to the top of the hollow plastic template, and the external thread of the bolt is connected to the inside of the hollow plastic template.

[0010] This utility model has the following beneficial effects:

[0011] In this utility model, the diameter of the reinforcing steel used in the ultra-thick floor slab of the nuclear power plant is 32mm. Ordinary civil buildings do not require such thick steel bars. Therefore, it is necessary to design according to the size of the large-diameter truss steel bars. The connector can meet the connection of steel bars with a diameter of 32mm and below. Moreover, the dead load and live load of the floor slab of the nuclear power plant are larger than those of civil buildings. Therefore, the metal connector must be verified by strength calculation and test to meet the bearing capacity requirements. The hanger is equipped with fixing rings on both sides to prevent the web members from shaking when placed inside. Attached Figure Description

[0012] Figure 1 This is a perspective view of a prefabrication connection device for a prefabricated floor deck slab in a nuclear power plant, as proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of a hollow plastic template for a prefabrication connection device for prefabricated floor deck slabs in nuclear power plants, as proposed in this utility model.

[0014] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 This is a structural schematic diagram of the cement pad block of the prefabrication connection device for prefabricated floor deck slabs in nuclear power plants proposed in this utility model.

[0016] Legend:

[0017] 1. Hollow plastic formwork; 2. Support ribs; 3. Cement blocks; 4. Hangers; 5. Screws; 6. Insert plates; 7. Fixing rings; 8. Bolts. Detailed Implementation

[0018] 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.

[0019] Reference Figure 2 , Figure 3 , Figure 4 This utility model provides an embodiment of a prefabricated connection device for prefabricated floor deck slabs in nuclear power plants, including a hollow plastic template 1. The hollow plastic template 1 mainly serves as the basic structural part of the prefabricated floor deck slabs in nuclear power plants. Its hollow structure makes the template lightweight and has good strength, which is convenient for transportation and installation. The template is prefabricated in the factory to ensure efficiency and quality consistency on the construction site. The bottom of the hollow plastic template 1 is fixedly connected with a support rib 2. The support rib 2 is used to support the bottom of the hollow plastic template 1. The support rib 2 plays a role in distributing the load and increasing the structural stability during the load-bearing process. The design of the support rib 2 can effectively prevent the template from deforming and ensure the stable load-bearing of the overall structure.

[0020] A cement block 3 is fixedly connected to the hollow plastic formwork 1 on the side away from the support rib 2. The cement block 3 is mainly used to adjust and stabilize the installation position of the hanger 4. The cement block 3 plays a supporting and buffering role at the bottom of the formwork, ensuring a stable connection between the hanger 4 and the formwork. The installation of the cement block 3 can help bear greater weight and prevent wear at the connection between the formwork and the hanger 4. The hanger 4 is fixedly connected to the top of the cement block 3. The hanger 4 is a key part of the entire prefabricated connection device, mainly used to suspend and fix other components. The hanger 4 provides a stable mounting point, making subsequent installation and adjustment more convenient. During the installation of the truss, appropriate support points and support frames are first set to ensure the stability of the truss during the installation process. The installers will use cranes and other equipment to hoist the truss section by section to the design position and fix it with temporary support devices. The web reinforcement of the bottom of the truss is precisely positioned and placed inside the hanger 4, and then the insert plate 6 is inserted into the hanger 4. The fixing ring 7 is fixed by bolts 8 on the outside of the hanger 4 and the top of the hollow plastic formwork 1 to complete the installation. The design of the hanger 4 is intended to ensure the safety of the entire device.

[0021] Especially when subjected to heavy loads during hoisting, the internal threaded connection of the hanger 4 is provided with screws 5. The function of screws 5 is to connect the hanger 4 to the cement pad block 3 to ensure the stability of the hanger 4. The installation of screws 5 can be selected according to the actual load conditions to ensure that the hanger 4 does not loosen or fail during use. The internal fixed connection of the hanger 4 is provided with insert plates 6. Insert plates 6 are used to enhance the stability of the hanger 4 and connect other components. Insert plates 6 can increase the contact area between connected components and avoid excessive local stress that could lead to structural damage. The top of the hanger 4 is fixedly connected with a fixing ring 7. The fixing ring 7 is used to prevent the web rod from shaking when placed inside the hanger 4. The internal threaded connection of the fixing ring 7 is provided with bolts 8. Bolts 8 fix the fixing ring 7 to the hollow plastic template 1.

[0022] Reference Figure 1 , Figure 3 The bottom of the fixing ring 7 is fixedly connected to the top of the hollow plastic template 1. The fixing ring 7 can effectively prevent the web rod from loosening or shifting during installation. The external thread of the bolt 8 is connected to the inside of the hollow plastic template 1. The bolt 8 is used to connect the fixing ring 7 and the hollow plastic template 1, which plays a role in stabilizing the entire structure.

[0023] Working principle: First, the hollow plastic formwork 1 is placed in the predetermined position, ensuring its bottom is in contact with the supporting rib 2 to provide necessary support. Next, cement blocks 3 are placed at the bottom of the formwork to adjust and stabilize the installation position of the hanger 4, ensuring a stable connection between it and the formwork. Subsequently, the hanger 4 is fixed to the top of the cement blocks 3, becoming a key part of the entire prefabricated connection device, providing a stable mounting point for subsequent truss installation. During truss installation, operators use cranes and other equipment to hoist the truss section by section to the designed position and fix it using temporary support devices. At this point, the web reinforcement bars at the bottom of the truss are precisely positioned and placed inside the hanger 4, and insert plates 6 are inserted into the hanger 4 to enhance the stability of the connection. Next, the installers will use screws 5 to connect the hanger 4 to the cement block 3 to ensure the stability of the hanger 4 under load. After the installation of the hanger 4 is completed, the fixing ring 7 is installed on the top of the hanger 4 to prevent the web members from shaking inside the hanger 4. Finally, the fixing ring 7 is fixed to the hollow plastic template 1 with bolts 8, thereby stabilizing the entire structure and ensuring the safety and stability of the load during subsequent use.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabrication connection device for prefabricated floor decking in nuclear power plants, comprising a hollow plastic template (1), characterized in that: The hollow plastic template (1) is fixedly connected to a support rib (2) at its bottom. A cement block (3) is fixedly connected to the hollow plastic template (1) on the side away from the support rib (2). A hanger (4) is fixedly connected to the top of the cement block (3). A screw (5) is threaded inside the hanger (4). An insert plate (6) is fixedly connected inside the hanger (4). A fixing ring (7) is fixedly connected to the top of the hanger (4). A bolt (8) is threaded inside the fixing ring (7).

2. The prefabrication connection device for prefabricated floor decking of a nuclear power plant according to claim 1, characterized in that: The bottom of the fixing ring (7) is fixedly connected to the top of the hollow plastic template (1), and the external thread of the bolt (8) is connected to the inside of the hollow plastic template (1).

Images