Connecting structure of assembly type anti-explosion outer wall

Abstract

The utility model provides a connecting structure of an assembly type explosion-proof outer wall, which comprises a first wall plate and a second wall plate, a joint is arranged between adjacent side surfaces of the first wall plate and the second wall plate, and a first T-shaped connecting steel plate corresponding to the first wall plate and a second T-shaped connecting steel plate corresponding to the second wall plate are arranged in the joint. A flange plate of the first T-shaped connecting steel plate is fixedly welded to the corresponding side face of the first wall plate, a flange plate of the second T-shaped connecting steel plate is fixedly welded to the corresponding side face of the second wall plate, and the waist plate end face of the first T-shaped connecting steel plate and the waist plate end face of the second T-shaped connecting steel plate are arranged in a butt joint mode. The flange plates of the two T-shaped connecting steel plates are welded and spliced with the connecting seats embedded in the first wallboard and the second wallboard, and after the ends of the web plates of the two T-shaped connecting steel plates are spliced, the two connecting plates connected through bolts are fixed to the two sides of the web plates for connection and fixation. Therefore, the stable connection of the first wallboard and the second wallboard is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of assembly type node, specifically a connecting structure of assembly type explosion -proof outer wall. BACKGROUND

[0002] With the acceleration of urbanization, important facilities (such as financial institutions, military bases, data centers, nuclear power plants, etc.) in the city need to face more and more potential security threats, including terrorist attacks, industrial explosions and natural disasters, etc., which put forward higher requirements for the explosion-proof performance of buildings, prompting people to explore more excellent materials and structural design.

[0003] Ordinary assembly type wall connecting node is prone to large local displacement after explosion, which further causes the failure of the node, secondly, the ordinary concrete used in common assembly type wall node is a quasi-brittle material, which has low tensile strength, poor ductility and weak deformation capacity, and can only withstand a small amount of tensile deformation, which leads to local brittle fracture under the action of explosion load; setting steel connecting node between assembly type explosion-proof walls is the common method of connecting assembly type explosion-proof walls at present, which connects the two parts of the connecting node into one through bolt or welding, realizing the connection between the two wallboards. However, when the wallboard is subjected to explosion and vibration or under the action of long-term micro-vibration, if bolt connection is used, the relative rotation of the two parts of the structure may occur, which is easy to cause the loosening of the bolt; if welding is used, due to the easy occurrence of undercut, excessive weld and crack during welding, the connection strength of the welded steel member is reduced after being subjected to external force impact or vibration; secondly, the fire resistance of steel is poor, and the node will be damaged if fire occurs due to explosion. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a connecting structure of assembly type explosion-proof outer wall, which aims to solve the problem that when the wallboard is subjected to explosion and vibration or under the action of long-term micro-vibration, if bolt connection is used, the relative rotation of the two parts of the structure may occur, which is easy to cause the loosening of the bolt, and at the same time, if fire occurs due to explosion, the node will be damaged.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a connection structure for a prefabricated explosion-proof exterior wall, comprising a first wall panel and a second wall panel, with a joint between adjacent sides of the first and second wall panels. A first T-shaped connecting steel plate corresponding to the first wall panel and a second T-shaped connecting steel plate corresponding to the second wall panel are provided in the joint. The flange of the first T-shaped connecting steel plate is welded and fixed to the corresponding side of the first wall panel, and the flange of the second T-shaped connecting steel plate is welded and fixed to the corresponding side of the second wall panel. The waist plate end face of the first T-shaped connecting steel plate and the waist plate end face of the second T-shaped connecting steel plate are abutted together, and connecting plates are symmetrically arranged vertically on both sides of the abutment. The two connecting plates are fixed by a tie assembly. Post-cast concrete is poured and fixed around the first and second T-shaped connecting steel plates in the joint.

[0006] Preferably, the post-cast concrete is (UHPC) concrete.

[0007] Preferably, both the T-shaped connecting steel plate and the connecting plate have through holes.

[0008] Preferably, the tie assembly includes a bolt disposed on one side of the T-shaped connecting steel plate, and the bolt is threadedly connected to a fastening nut after passing through the through hole, and the fastening nut is provided with an anti-loosening component.

[0009] Preferably, the bolt has multiple sets of circular holes at its front end, and the anti-loosening component includes a threaded sleeve fixedly disposed on one side of the nut. The threaded sleeve has multiple sets of grooves, a connecting rod is hinged in the groove, a cylinder is disposed below the connecting rod, and an anti-loosening nut is threadedly connected to the threaded sleeve.

[0010] Preferably, multiple sets of pre-reserved reinforcing bars are fixedly installed on adjacent sides of both the first and second wall panels. The beneficial effects of this utility model are:

[0011] 1. In use, this utility model welds the flanges of two T-shaped connecting steel plates to the connecting seats embedded in the first and second wall panels. The two connecting plates are then bolted to the sides of the waist plate after the ends of the two T-shaped connecting steel plates are joined, thus achieving a stable connection between the first and second wall panels. UHPC (Ultra-High-Pressure Polymer) concrete is poured into the joint around the first and second T-shaped connecting steel plates to protect them. The use of UHPC concrete significantly improves the durability and fire resistance of the joint, enabling it to resist corrosion and chemical attack in harsh environments. Furthermore, the explosion-proof exterior wall joint not only significantly improves impact and explosion resistance but also ensures connection strength and structural ductility.

[0012] 2. When in use, this utility model effectively prevents bolts from loosening due to vibration, impact or other external forces by setting anti-loosening components, ensuring the stability of the connection point under long-term use and extreme conditions, and further improving the safety level of the building. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present utility model;

[0014] Figure 2 This is a top cross-sectional structural diagram of a specific embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure after the post-concrete body has been removed, according to a specific embodiment of this utility model;

[0016] Figure 4 This is a schematic diagram of the anti-loosening bolt according to a specific embodiment of this utility model;

[0017] Figure 5 This is a schematic diagram of the circular hole in a specific embodiment of this utility model;

[0018] Figure 6 This is a schematic diagram of the through hole structure in a specific embodiment of this utility model.

[0019] In the diagram: 1. First wall panel; 2. Post-cast concrete body; 3. Reserved reinforcing steel; 4. T-shaped connecting steel plate; 5. Bolt; 6. Connecting plate; 7. Fastening nut; 8. Anti-loosening nut; 9. Threaded sleeve; 10. Groove; 11. Connecting rod; 12. Through hole; 13. Round hole; 14. Second wall panel; 15. Connecting seat. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0021] like Figures 1-6 As shown, a connection structure for a prefabricated explosion-proof exterior wall includes a first wall panel 1 and a second wall panel 14. There is a joint between the adjacent sides of the first wall panel 1 and the second wall panel 14. A first T-shaped connecting steel plate corresponding to the first wall panel 1 and a second T-shaped connecting steel plate corresponding to the second wall panel 14 are provided in the joint. The flange of the first T-shaped connecting steel plate is welded and fixed to the corresponding side of the first wall panel 1, and the flange of the second T-shaped connecting steel plate is welded and fixed to the corresponding side of the second wall panel 14. The waist plate end face of the first T-shaped connecting steel plate and the waist plate end face of the second T-shaped connecting steel plate are abutted together. Connecting plates 6 are symmetrically arranged in the vertical direction on both sides of the abutment. The two connecting plates 6 are fixed by a tie assembly. Post-cast concrete 2 is poured and fixed in the joint around the first T-shaped connecting steel plate and the second T-shaped connecting steel plate.

[0022] In this embodiment, connecting seats 15 are pre-embedded on the adjacent sides of the first wall panel 1 and the second wall panel 14. The flanges of the two T-shaped connecting steel plates 4 are spliced ​​to the connecting seats 15 by welding. The two T-shaped connecting steel plates 4 are connected and fixed to the two sides of the waist plate by butting the ends of the waist plates and then fixing the two connecting plates 6 connected by bolts 5 to the waist plates. UHPC concrete is poured to protect the first T-shaped connecting steel plate and the second T-shaped connecting steel plate.

[0023] like Figure 2 As shown, the post-cast concrete body 2 is (UHPC) concrete.

[0024] In this embodiment, (UHPC) concrete, a material with excellent strength and toughness, can effectively resist the damage of blast shock waves, reduce the risk of joint failure, and thus improve the overall blast resistance of the building, protecting the safety of the building and its occupants. (UHPC) concrete has high density, corrosion resistance, and durability, making it suitable for extreme environments (such as high humidity, high corrosion, or high temperature environments), extending the service life of the blast-resistant wall. Furthermore, (UHPC) concrete has good anchorage and shear resistance with the reinforcing steel. After the precast wall's anchoring steel bars are connected to the post-cast (UHPC) concrete, the excellent shear resistance of the (UHPC) concrete and anchoring steel bars effectively restrains the relative displacement between the joints and the wall panel caused by the blast.

[0025] like Figure 6 As shown, both the T-shaped connecting steel plate and the connecting plate 6 have through holes 12. The tie assembly includes a bolt 5 set on one side of the T-shaped connecting steel plate, and the bolt 5 is threaded to a fastening nut 7 after passing through the through hole 12. The fastening nut 7 is equipped with an anti-loosening component.

[0026] In this embodiment, by tightening the bolt 5 after it passes through the through hole 12, the two connecting plates 6 are fixed on both sides of the web splice of the two T-shaped connecting steel plates 4 to connect and fix the two T-shaped connecting steel plates.

[0027] like Figure 5 As shown, the bolt 5 has multiple sets of round holes 13 at its front end. The anti-loosening component includes a threaded sleeve 9 fixedly disposed on one side of the nut. The threaded sleeve 9 has multiple sets of grooves 10. A connecting rod 11 is hinged in the groove 10. A cylinder is disposed below the connecting rod 11. An anti-loosening nut 8 is threadedly connected to the threaded sleeve 9.

[0028] In this embodiment, by setting the threaded sleeve 9, when people tighten the anti-loosening nut 8, the anti-loosening nut 8 moves forward continuously, squeezing the front end of the connecting rod 11 and pressing it down continuously, so that the cylinder is inserted into the round hole 13, which limits the threaded sleeve 9 and the fastening bolt 5, prevents the fastening bolt 5 from loosening, and increases the stability of the bolt 5.

[0029] like Figure 3 As shown, multiple sets of reserved steel bars 3 are fixedly installed on the adjacent side of the first wall panel 1 and the second wall panel 14.

[0030] In this embodiment, after the reserved steel bars 3 of the first wall panel 1 and the second wall panel 14 are connected to the post-cast (UHPC) concrete, the good shear resistance of the (UHPC) concrete and the reserved steel bars 3 can effectively restrain the relative displacement between the node and the wall panel caused by the explosion.

[0031] Working principle: During wall installation, firstly, after installing the first wall panel 1 and the second wall panel 14, weld the flanges of the two T-shaped connecting steel plates 4 to the connecting seats 15 of the first wall panel 1 and the second wall panel 14 respectively. Then, attach the two connecting plates 6 to both sides of the joint of the T-shaped connecting steel plate 4, aligning the connecting plates 6 with the through holes 12 on the T-shaped connecting steel plate 4. Next, pass the bolts 5 through the through holes 12 on the connecting plates 6 and the T-shaped connecting steel plate 4, and tighten the bolts 5 to fix the two connecting plates 6 to both sides of the T-shaped connecting steel plate 4. By using threaded sleeves 9, when tightening the anti-loosening nuts 8, the anti-loosening nuts 8... The front end of the continuously advancing and pressing connecting rod 11 is continuously pressed down until the cylinder is inserted into the round hole 13, limiting the threaded sleeve 9 and fastening bolt 5 to prevent the fastening bolt 5 from loosening and increasing the stability of the bolt 5. After the internal steel node is installed, the entire node area is supported by formwork and post-cast (UHPC) concrete is poured to improve the strength of the node. When subjected to external impact, the outer (UHPC) concrete first resists part of the impact force, and then the internal steel node dissipates the energy brought by the explosion or impact. When the impact is large, the good cooperative working ability of the internal steel node and the outer (UHPC) concrete can jointly resist the transmitted impact force.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connection structure for a prefabricated explosion-proof exterior wall, comprising a first wall panel (1) and a second wall panel (14), wherein there is a joint between adjacent sides of the first wall panel (1) and the second wall panel (14), characterized in that: The joint is provided with a first T-shaped connecting steel plate corresponding to the first wall panel (1) and a second T-shaped connecting steel plate corresponding to the second wall panel. The flange of the first T-shaped connecting steel plate is welded and fixed to the corresponding side of the first wall panel (1). The flange of the second T-shaped connecting steel plate (4) is welded and fixed to the corresponding side of the second wall panel (14). The waist plate end face of the first T-shaped connecting steel plate is connected to the waist plate end face of the second T-shaped connecting steel plate. Connecting plates (6) are symmetrically arranged on both sides of the joint along the vertical direction. The two connecting plates (6) are fixed by a tie assembly. Post-cast concrete (2) is poured and fixed around the first T-shaped connecting steel plate and the second T-shaped connecting steel plate in the joint.

2. The connection structure of the prefabricated explosion-proof exterior wall according to claim 1, characterized in that, The post-cast concrete body (2) is UHPC concrete.

3. The connection structure of the prefabricated explosion-proof exterior wall according to claim 1, characterized in that, Both the T-shaped connecting steel plate (4) and the connecting plate (6) are provided with through holes (12).

4. The connection structure of a prefabricated explosion-proof exterior wall according to claim 3, characterized in that, The tying assembly includes a bolt (5) disposed on one side of the T-shaped connecting steel plate (4), and the bolt (5) is threadedly connected to a fastening nut (7) after passing through the through hole (12), and the fastening nut (7) is provided with an anti-loosening component.

5. The connection structure of a prefabricated explosion-proof exterior wall according to claim 4, characterized in that, The bolt (5) has multiple sets of round holes (13) at its front end. The anti-loosening component includes a threaded sleeve (9) fixedly disposed on one side of the nut (7). The threaded sleeve (9) has multiple sets of grooves (10). A connecting rod (11) is hinged in the groove (10). A cylinder is disposed below the connecting rod (11). An anti-loosening nut (8) is threadedly connected to the threaded sleeve (9).

6. The connection structure of a prefabricated explosion-proof exterior wall according to claim 4, characterized in that, Multiple sets of reserved steel bars (3) are fixedly installed on the adjacent side of the first wall panel (1) and the second wall panel (14).

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