An anti-buoyancy precast concrete cover plate installation structure

Abstract

This utility model relates to the field of concrete structure technology, specifically to an anti-buoyancy precast concrete cover plate installation structure, comprising: a precast concrete cover plate; cast-in-place main concrete, wherein the cast-in-place main concrete is provided with an installation groove, the installation groove being adapted to the precast concrete cover plate; a bracket, the bracket being disposed at the bottom of the installation groove; a first sealing element, the first sealing element being disposed between the precast concrete cover plate and the bottom and side wall of the installation groove, for sealing the gap between the precast concrete cover plate and the cast-in-place main concrete; and a fixing bolt assembly, the fixing bolt assembly being used to connect the precast concrete cover plate and the cast-in-place main concrete. This utility model can achieve anti-buoyancy, sealing, and rapid installation, ensuring rapid isolation of water flow in the event of sudden leakage, simplifying maintenance and repair operations under normal working conditions, and is low in cost and economical.

Description

Technical Field

[0001] This utility model relates to the field of concrete structure technology, specifically to an anti-buoyancy precast concrete cover plate installation structure. Background Technology

[0002] In underwater structures such as dock pump houses, the floor slab of equipment rooms often requires removable covers to meet the maintenance needs of large equipment. Traditional concrete covers rely on their own weight and side mortar filling for fixation and sealing. However, although there is no water accumulation under normal operating conditions, if leakage occurs in external areas of the equipment room (such as the pump room) or a sudden water pressure occurs, it is necessary to quickly prevent water from entering the equipment room. Existing technologies have the following significant drawbacks:

[0003] Defects in buoyancy resistance and sealing: Traditional cover plates rely on their own weight and mortar bonding. Under sudden water pressure, they are prone to displacement due to buoyancy or vibration, and the mortar is prone to cracking, causing leakage.

[0004] The disassembly efficiency is low. After the side filling mortar hardens, it is tightly bonded to the cover plate. During maintenance, the mortar needs to be removed, which damages the structure and is cumbersome.

[0005] Poor sealing stability; the mortar is prone to cracking due to temperature changes or vibration, resulting in a high risk of water seepage after long-term use.

[0006] The imbalance between cost and performance means that while custom-made metal watertight doors include water seals and pressure-resistant designs to cope with sudden water pressure, their high cost and complex installation process make them unsuitable for the needs of regular projects.

[0007] Therefore, there is an urgent need for a concrete cover plate solution that combines preventative sealing, anti-buoyancy locking, and economy, which can ensure rapid isolation of water flow in the event of sudden leakage, and simplify maintenance and repair operations under normal operating conditions. Utility Model Content

[0008] This utility model provides an anti-buoyancy precast concrete cover plate installation structure. Through the detachable and sealed connection between the precast cover plate and the cast-in-place main structure, it can achieve anti-buoyancy, sealing and rapid installation. It can not only ensure rapid isolation of water flow in case of sudden leakage, but also simplify maintenance and repair operations under normal working conditions. Moreover, it is low in cost and economical.

[0009] This utility model is achieved through the following technical solution:

[0010] This utility model provides an anti-buoyancy precast concrete cover plate installation structure, comprising: a precast concrete cover plate; cast-in-place main concrete, wherein the cast-in-place main concrete is provided with an installation groove, the installation groove being adapted to the precast concrete cover plate; a bracket, wherein the bracket is disposed at the bottom of the installation groove; a first sealing element, wherein the first sealing element is disposed between the precast concrete cover plate and the bottom and side wall of the installation groove, for sealing the gap between the precast concrete cover plate and the cast-in-place main concrete; and a fixing bolt assembly, wherein the fixing bolt assembly is used to connect the precast concrete cover plate and the cast-in-place main concrete.

[0011] The anti-buoyancy precast concrete cover plate installation structure provided by this utility model includes a precast concrete cover plate, cast-in-place main concrete, corbels, a first sealing element, and a fixing bolt assembly. The cast-in-place main concrete is provided with an installation groove adapted to the precast concrete cover plate. The corbels are set at the bottom of the installation groove to support the precast concrete cover plate through the corbels and the bottom of the installation groove. The first sealing element is set between the precast concrete cover plate and the bottom and side wall of the installation groove to seal the gap between the precast concrete cover plate and the cast-in-place main concrete. The precast concrete cover plate and the cast-in-place main concrete are connected by the fixing bolt assembly.

[0012] The first sealing element seals the gap between the precast concrete cover plate and the cast-in-place main concrete, ensuring the overall structure's airtightness and preventing leakage. Furthermore, the first sealing element, when compressed, forms an elastic sealing layer. Connecting the precast concrete cover plate to the cast-in-place main concrete via a fixing bolt assembly provides sufficient anti-buoyancy force compared to relying solely on its own weight and mortar bonding. Moreover, during disassembly, the precast concrete cover plate can be separated simply by removing the bolt assembly, without damaging the installation structure. This design offers advantages such as convenient assembly and disassembly, good sealing, high anti-buoyancy capability, and good economy.

[0013] In an optional embodiment of this application, the top of the precast concrete cover plate is provided with lifting lugs to facilitate the lifting of the precast concrete cover plate into the installation groove by a lifting device.

[0014] In an optional embodiment of this application, the fixing bolt assembly includes: a connecting bolt, the shank of which passes through the precast concrete cover plate; and an internal threaded tube, which is vertically embedded in the bottom of the mounting groove; wherein the threaded section of the connecting bolt is screwed to the internal threaded tube, so as to quickly fix the precast concrete cover plate to the cast-in-place main concrete through the connecting bolt.

[0015] In an optional embodiment of this application, a second seal is further included, which is located between the head of the connecting bolt and the top of the precast concrete cover plate. The second seal is used to seal the gap between the head of the connecting bolt and the top of the precast concrete cover plate to improve the sealing performance of the entire installation structure.

[0016] In an optional embodiment of this application, both the first seal and the second seal are made of rubber to ensure that the first seal and the second seal have sufficient sealing performance.

[0017] In an optional embodiment of this application, both the first seal and the second seal are made of neoprene rubber, and the thickness of the first seal and the second seal is ≥10mm, the Shore hardness is 60±5, and the compression ratio is ≥30%, so as to ensure the sealing effect.

[0018] In an optional embodiment of this application, the inner threaded tube is made of stainless steel to ensure that the inner threaded tube has sufficient rigidity and corrosion resistance.

[0019] In an optional embodiment of this application, a locking beam is further included, which is a rigid component; a limiting opening is provided at the lower part of the corbel; limiting bosses are provided on opposite sides of the precast concrete cover plate, the limiting bosses extending to the lower side of the cast-in-place main concrete, and a locking hole is provided in the middle of the limiting bosses for the locking beam to pass through; wherein, one end of the locking beam is inserted into the limiting opening, the middle part passes through the locking hole, and the other end extends to the lower end face of the cast-in-place main concrete away from the corbel, so as to ensure the stability of the precast concrete cover plate installation and sufficient anti-buoyancy performance through the double fixation of the locking beam and bolts.

[0020] In an optional embodiment of this application, the locking beam is an I-beam or a rectangular steel tube to ensure that the locking beam has sufficient rigidity.

[0021] In an optional embodiment of this application, a leveling mortar layer is also included, which is used to fill the groove on the top of the precast concrete cover plate to ensure that the top of the precast concrete cover plate has sufficient flatness.

[0022] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0023] The anti-buoyancy precast concrete cover plate installation structure provided by this utility model includes a precast concrete cover plate, cast-in-place main concrete, corbels, a first sealing element, and a fixing bolt assembly. The cast-in-place main concrete is provided with an installation groove adapted to the precast concrete cover plate. The corbels are located at the bottom of the installation groove to support the precast concrete cover plate through the corbels and the bottom of the installation groove. The first sealing element is located between the precast concrete cover plate and the bottom and side wall of the installation groove to seal the gap between the precast concrete cover plate and the cast-in-place main concrete. The precast concrete cover plate and the cast-in-place main concrete are connected by the fixing bolt assembly, which can ensure the sealing of the entire structure and prevent leakage. Moreover, the first sealing element can form an elastic sealing layer after being compressed. Compared with relying directly on its own weight and mortar bonding, it can not only provide sufficient anti-buoyancy tensile force, but also, during disassembly, only the bolt assembly needs to be removed to separate the precast concrete cover plate without damaging the installation structure. It has the characteristics of convenient disassembly and assembly, good sealing performance, high anti-buoyancy capacity, and good economy. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] In the attached diagram:

[0026] Figure 1 This is a transverse sectional view of the anti-buoyancy precast concrete cover plate installation structure provided in the embodiments of this application;

[0027] Figure 2 This is a longitudinal sectional view of the anti-buoyancy precast concrete cover plate installation structure provided in the embodiments of this application;

[0028] Figure 3 This is an enlarged structural schematic diagram of the connection between the precast concrete cover plate and the cast-in-place main concrete structure in an embodiment of this application.

[0029] The attached figures include reference numerals and their corresponding component names:

[0030] 1-Precast concrete cover plate, 2-Cast-in-place main concrete, 3-Installation groove, 4-Corner, 5-First seal, 6-Lifting lug, 7-Connecting bolt, 8-Internal threaded tube, 9-Second seal, 10-Locking beam, 11-Limiting opening, 12-Limiting boss, 13-Locking hole, 14-Filling mortar layer. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0035] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] Example

[0037] Combination Figure 1 and Figure 2This utility model provides an anti-buoyancy precast concrete cover plate installation structure, including: a precast concrete cover plate 1; a cast-in-place main concrete 2, wherein the cast-in-place main concrete 2 is provided with an installation groove 3, the installation groove 3 being adapted to the precast concrete cover plate 1; a bracket 4, wherein the bracket 4 is disposed at the bottom of the installation groove 3; a first sealing member 5, wherein the first sealing member 5 is disposed between the precast concrete cover plate 1 and the bottom and side wall of the installation groove 3, for sealing the gap between the precast concrete cover plate 1 and the cast-in-place main concrete 2; and a fixing bolt assembly, wherein the fixing bolt assembly is used to connect the precast concrete cover plate 1 and the cast-in-place main concrete.

[0038] Typically, the top of the precast concrete cover plate 1 is provided with lifting lugs 6 to facilitate the hoisting of the precast concrete cover plate 1 into the installation groove 3 using hoisting equipment. Generally, the lifting lugs 6 are embedded in the top of the precast concrete cover plate 1, and grooves are provided on the outer periphery of the lifting lugs 6 to facilitate the connection of the lifting slings to the lifting lugs 6.

[0039] Combined again Figure 1 and Figure 2 This embodiment also includes a locking beam 10, which is a rigid component; a limiting opening 11 is provided at the lower part of the corbel 4; limiting bosses 12 are provided on opposite sides of the precast concrete cover plate 1, the limiting bosses 12 extend to the lower side of the cast-in-place main concrete 2, and a locking hole 13 is provided in the middle of the limiting bosses 12 for the locking beam 10 to pass through; wherein, one end of the locking beam 10 is inserted into the limiting opening 11, the middle part passes through the locking hole 13, and the other end extends to the lower end face of the cast-in-place main concrete 2 away from the corbel 4, so as to ensure the stability of the precast concrete cover plate 1 installation and sufficient anti-buoyancy performance through the double fixation of the locking beam 10 and bolts.

[0040] It is understood that the locking beam 10 is an I-beam or a rectangular steel tube to ensure that the locking beam 10 has sufficient rigidity.

[0041] Combination Figure 3 The fixing bolt assembly includes: a connecting bolt 7, the shank of which passes through the precast concrete cover plate 1; and an internal threaded tube 8, which is vertically embedded in the bottom of the mounting groove 3. The threaded section of the connecting bolt 7 is screwed to the internal threaded tube 8 so as to quickly fix the precast concrete cover plate 1 to the cast-in-place main concrete 2 using the connecting bolt 7.

[0042] Based on this, this embodiment also includes a second sealing element 9, which is located between the head of the connecting bolt 7 and the top of the precast concrete cover plate 1. The second sealing element 9 is used to seal the gap between the head of the connecting bolt 7 and the top of the precast concrete cover plate 1 to improve the sealing performance of the entire installation structure.

[0043] It is understandable that both the first seal 5 and the second seal 9 are made of rubber to ensure that the first seal 5 and the second seal 9 have sufficient sealing performance.

[0044] In this embodiment, both the first sealing element 5 and the second sealing element 9 are made of neoprene rubber, and the thickness of the first sealing element 5 and the second sealing element 9 is ≥10mm, the Shore hardness is 60±5, and the compression ratio is ≥30%, so as to ensure the sealing effect.

[0045] Specifically:

[0046] The precast concrete cover plate 1 is made of high-strength concrete and has internally embedded lifting lugs 6 for hoisting. Locking holes 13 and bolt holes are reserved according to the design position.

[0047] 2. Cast-in-place main concrete, 3. Pre-reserved cover plate installation groove, 8 internal threaded pipe in the groove 3, and corbel 4 set at the bottom of the groove as support, with a locking beam 10 opening reserved in the corbel 4.

[0048] Bracket 4, which is a cast-in-place concrete boss, serves as the load-bearing and positioning structure of the precast concrete cover plate 1. Its height and planar dimensions are determined according to the load of the precast concrete cover plate 1 and the installation requirements of the locking beam 10.

[0049] The sealing assembly includes a first sealing element 5 sandwiched between the bottom and side of the precast concrete cover plate 1 and the cast-in-place main concrete 2, and a second sealing element 9 between the connecting bolt 7 and the precast concrete cover plate 1.

[0050] The locking device includes a connecting bolt 7 that passes through the bolt hole of the precast concrete cover plate 1 and connects to the internal threaded tube, and a locking beam 10 that is embedded in the limiting opening 11 of the precast concrete cover plate 1 and the corbel 4 of the cast-in-place main concrete 2.

[0051] The internal threaded tube is made of stainless steel and its internal thread specification matches that of the connecting bolt 7. The pre-embedded depth must ensure that the load-bearing capacity meets the anti-buoyancy requirements after the bolt is screwed in.

[0052] Locking beam 10, which is a rigid metal beam, is inserted into the locking hole 13 of the precast concrete cover plate 1 and the limiting hole 11 of the corbel 4 during installation.

[0053] In addition, this embodiment also includes a leveling mortar layer 14, which is used to fill the groove on the top of the precast concrete cover plate 1 to ensure that the top of the precast concrete cover plate 1 has sufficient flatness.

[0054] In summary, the anti-buoyancy precast concrete cover plate installation structure provided in this embodiment includes a precast concrete cover plate 1, a cast-in-place main concrete 2, a corbel 4, a first sealing element 5, a fixing bolt assembly, a limiting boss 12, and a locking beam 10. The cast-in-place main concrete 2 is provided with an installation groove 3 adapted to the precast concrete cover plate 1. The corbel 4 is located at the bottom of the installation groove 3 to support the precast concrete cover plate 1 through the corbel 4 and the bottom of the installation groove 3. The first sealing element 5 is located between the precast concrete cover plate 1 and the bottom and side wall of the installation groove 3 to seal the gap between the precast concrete cover plate 1 and the cast-in-place main concrete 2. The precast concrete cover plate 1 is connected to the cast-in-place main concrete through the fixing bolt assembly. One end of the locking beam 10 is inserted into the limiting hole 11 of the corbel 4, the middle part is inserted into the locking hole 13 of the limiting boss 12, and the other end extends to the lower end face of the cast-in-place main concrete 2 away from the corbel 4.

[0055] During installation, the first sealing element 5 is laid on the bottom and side of the groove of the cast-in-place main concrete 2; then the precast concrete cover plate 1 is hoisted into the installation groove 3, and the position of the precast concrete cover plate 1 is adjusted so that its bolt holes are aligned with the internal threaded tubes, and then the connecting bolts 7 are screwed in and tightened; then the locking beam 10 is inserted into the corresponding holes of the precast concrete cover plate 1 and the bracket 4 to complete the anti-buoyancy locking; finally, mortar is filled into the grooves corresponding to the lifting lugs 6 and the connecting bolts 7 and smoothed until it is flush with the top surface of the cast-in-place main concrete 2.

[0056] The first sealing element 5 seals the gap between the precast concrete cover plate 1 and the cast-in-place main concrete 2. This ensures the airtightness of the entire structure and prevents leakage. Furthermore, the first sealing element 5, when compressed, forms an elastic sealing layer. The precast concrete cover plate 1 and the cast-in-place main concrete are connected by a fixing bolt assembly. Compared to relying directly on its own weight and mortar bonding, this not only provides sufficient anti-buoyancy force, but also allows the precast concrete cover plate 1 to be separated simply by removing the bolt assembly during disassembly, without damaging the installation structure. This design features convenient disassembly and assembly, good sealing, high anti-buoyancy capacity, and good economy.

[0057] In summary, the anti-buoyancy precast concrete cover plate installation structure provided in this embodiment, through the double fixation formed by the locking beam 10 and bolts, can counteract buoyancy. The sealant, after compression, forms an elastic sealing layer that adapts to vibration and has no risk of cracking. Disassembly only requires removing the bolts and locking beam 10. Furthermore, the precast concrete cover plate 1 and the cast-in-place main concrete 2 can be designed collaboratively, reducing construction costs and time. It can be used in dock pump rooms and similar facilities, and is particularly suitable for equipment room floor slab installation scenarios requiring prevention of sudden leakage and ensuring airtightness.

[0058] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An anti-buoyancy precast concrete cover plate installation structure, characterized in that, include: Precast concrete cover plate (1); The cast-in-place main concrete (2) is provided with an installation groove (3), which is adapted to the precast concrete cover plate (1); Bracket (4), the bracket (4) is disposed at the bottom of the mounting groove (3); The first sealing element (5) is disposed between the precast concrete cover plate (1) and the bottom and side wall of the mounting groove (3) to seal the gap between the precast concrete cover plate (1) and the cast-in-place main concrete (2); A fixing bolt assembly is used to connect the precast concrete cover plate (1) to the cast-in-place main concrete structure.

2. The anti-buoyancy precast concrete cover plate installation structure according to claim 1, characterized in that, The top of the precast concrete cover plate (1) is provided with lifting lugs (6).

3. The anti-buoyancy precast concrete cover plate installation structure according to claim 1, characterized in that, The fixing bolt assembly includes: Connecting bolt (7), the shank of which passes through the precast concrete cover plate (1); The inner thread tube (8) is vertically embedded in the bottom of the mounting groove (3); The threaded section of the connecting bolt (7) is screwed to the inner threaded tube (8).

4. The anti-buoyancy precast concrete cover plate installation structure according to claim 3, characterized in that, It also includes a second seal (9) located between the head of the connecting bolt (7) and the top of the precast concrete cover plate (1), the second seal (9) being used to seal the gap between the head of the connecting bolt (7) and the top of the precast concrete cover plate (1).

5. The anti-buoyancy precast concrete cover plate installation structure according to claim 4, characterized in that, Both the first seal (5) and the second seal (9) are made of rubber.

6. The anti-buoyancy precast concrete cover plate installation structure according to claim 5, characterized in that, The first seal (5) and the second seal (9) are both made of neoprene rubber, and the thickness of the first seal (5) and the second seal (9) is ≥10mm, the Shore hardness is 60±5, and the compression ratio is ≥30%.

7. The anti-buoyancy precast concrete cover plate installation structure according to claim 3, characterized in that, The inner wire tube (8) is made of stainless steel.

8. The anti-buoyancy precast concrete cover plate installation structure according to any one of claims 1 to 7, characterized in that, It also includes a locking beam (10), which is a rigid component; The lower part of the cow leg (4) is provided with a limiting opening (11); The precast concrete cover plate (1) has limiting bosses (12) on both opposite sides. The limiting bosses (12) extend to the lower side of the cast-in-place main concrete (2), and the limiting bosses (12) have locking holes (13) in the middle for the locking beam (10) to pass through. The locking beam (10) is inserted into the limiting hole (11) at one end, passes through the locking hole (13) in the middle, and extends to the lower end face of the cast-in-place main concrete (2) away from the corbel (4) at the other end.

9. The anti-buoyancy precast concrete cover plate installation structure according to claim 8, characterized in that, The locking beam (10) is an I-beam or a rectangular steel pipe.

10. The anti-buoyancy precast concrete cover plate installation structure according to claim 1, characterized in that, It also includes a leveling mortar layer (14) for filling the groove on the top of the precast concrete cover plate (1).

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