A beam-column simple support connecting node structure suitable for a cooling tower sprinkling framework

Abstract

A kind of beam column simple support connection node structure suitable for cooling tower sprinkling structure, including sprinkling structure column and sprinkling structure beam, the connection node of sprinkling structure column and sprinkling structure beam uses simple support connection, the simple support connection refers to: in the top of sprinkling structure column, stainless steel bolt is pre-buried, reserved bolt hole is formed on sprinkling structure beam, after stainless steel bolt passes through reserved bolt hole, it is fastened with stainless steel nut, stainless steel gasket is arranged between stainless steel nut and sprinkling structure beam.Compared with prior art, the utility model has the following beneficial effects: a kind of novel beam column simple support connection node structure suitable for cooling tower sprinkling structure, especially suitable for concrete structure connection under high temperature, high humidity, corrosive environment, by the novel design scheme, the beam column node of durable, safe and reliable can be designed, node damage caused by corrosion does not affect the safety of structure.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower structural engineering technology, specifically a beam-column simply supported connection node structure suitable for cooling tower water spray frame, especially suitable for concrete structure connection in high temperature, high humidity and corrosive environments. Background Technology

[0002] With the gradual improvement of domestic cooling tower technology, the size of cooling towers has also been increasing.

[0003] As the size of the cooling tower increased, the column spacing of the water distribution structure gradually expanded from the initial 6m to 8m. With the increase in column spacing, the size of the beam system of the water distribution device also gradually increased, and the requirements for structural stability became increasingly stringent.

[0004] The cooling tower's water distribution frame is the core structure supporting the water distribution packing, water supply system, and maintenance access. Its beam-column joints must withstand long-term cyclic humid heat loads, wind loads, and chemical corrosion. Traditional connection methods often employ welding or pre-installed reinforcing bars, but these traditional methods have numerous drawbacks:

[0005] 1. Complex construction: High precision requirements for on-site welding, low construction efficiency, and susceptibility to environmental humidity.

[0006] 2. Poor durability: Welds and reinforcing bars are susceptible to damp heat corrosion, which leads to a shortened structural lifespan;

[0007] 3. Stress concentration: Welded joints are prone to secondary stress when the temperature changes, which can lead to cracking.

[0008] 4. Corrosion damage: The embedded iron parts at the beam-column joints are severely corroded, which may lead to structural instability.

[0009] Currently, in wet cooling tower projects in central China, recycled water is commonly used as the circulating water source. Its high chloride ion, high sulfide, and low pH characteristics significantly enhance its corrosiveness, posing a serious threat to traditional beam-column joint connections (such as welded or bolted connections). Long-term exposure to corrosive media easily leads to problems such as weld corrosion, bolt seizure, and pitting corrosion in connecting plates, potentially causing local instability or even structural failure, severely impacting the safety and durability of the water-spraying structure of ultra-large cooling towers. To address this issue, this invention proposes a novel beam-column simply supported joint structure. Through the selection of corrosion-resistant materials, innovation in the sealing and protection system, and deformation-adaptive design, it effectively blocks the erosion path of recycled water, improves the corrosion resistance of the joints, provides a reliable solution for the structural safety of ultra-large cooling towers in highly corrosive environments, and offers new ideas for the design practice of similar projects. Utility Model Content

[0010] The technical problem to be solved by this utility model is: mainly targeting humid and hot, highly corrosive environments, proposing a beam-column simply supported connection node structure for the water spraying frame of an ultra-large cooling tower.

[0011] To solve the above problems, this utility model is achieved through the following technical solution:

[0012] A beam-column simply supported connection node structure suitable for cooling tower water distribution frame includes water distribution frame columns and water distribution frame beams. The connection node between the water distribution frame columns and water distribution frame beams adopts a simply supported connection. The simply supported connection means that: stainless steel bolts are pre-embedded in the top of the water distribution frame columns, bolt holes are reserved on the water distribution frame beams, the stainless steel bolts pass through the reserved bolt holes and are tightened with stainless steel nuts, and stainless steel washers are provided between the stainless steel nuts and the water distribution frame beams.

[0013] Both the water-sprinkling frame columns and beams are prefabricated.

[0014] The stainless steel bolts include straight bolts embedded in the water-sprinkling frame columns, straight bolts embedded in the water-sprinkling frame beams, and bent portions, wherein the straight bolts embedded in the water-sprinkling frame columns and the straight bolts embedded in the water-sprinkling frame beams are coaxial and form an integral structure.

[0015] The straight bolts embedded in the water-sprinkling frame columns shall be no less than 300mm in length and the length of the bent portion shall be no less than 150mm in length. The length of the straight bolts embedded in the water-sprinkling frame beams shall be longer than that of the straight bolts embedded in the water-sprinkling frame columns.

[0016] The center distance of the stainless steel bolt from the edge of the water-spraying frame column shall not be less than 100mm.

[0017] Neoprene rubber gaskets are installed on the contact surfaces of the water-sprinkling frame columns and beams.

[0018] Compared with existing technologies, this utility model has the following advantages: A novel beam-column simply supported connection node structure is applicable to cooling tower water distribution frames, especially suitable for concrete structure connections in high-temperature, high-humidity, and corrosive environments. This novel design allows for the creation of durable, safe, and reliable beam-column nodes that will not be damaged by corrosion, thus ensuring structural safety. Furthermore, this solution offers advantages such as simple construction and easy maintenance, making it highly valuable for widespread application. Attached Figure Description

[0019] Figure 1 This is a plan view of the beam-column joint of this utility model;

[0020] Figure 2 This is a 1-1 cross-sectional view of the present invention; Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figure 1 , Figure 2 As shown, a beam-column simply supported connection node structure suitable for cooling tower water distribution frame includes a water distribution frame column 1 and a water distribution frame beam 2. The connection node between the water distribution frame column 1 and the water distribution frame beam 2 adopts a simply supported connection. The simply supported connection means that: a stainless steel bolt 3 is pre-embedded in the top of the water distribution frame column 1, and a bolt hole 7 is reserved on the water distribution frame beam 2. The stainless steel bolt 3 passes through the reserved bolt hole 7 and is fastened to a stainless steel nut 4. A stainless steel washer 5 is provided between the stainless steel nut 4 and the water distribution frame beam 2.

[0024] Furthermore, both the water-sprinkling frame column 1 and the water-sprinkling frame beam 2 are prefabricated structures.

[0025] Furthermore, the stainless steel bolt 3 includes a straight bolt 31 embedded in the water-sprinkling frame column, a straight bolt 32 embedded in the water-sprinkling frame beam, and a bent portion 33. The straight bolt 31 embedded in the water-sprinkling frame column and the straight bolt 32 embedded in the water-sprinkling frame beam are coaxial and integral. The straight bolt 31 embedded in the water-sprinkling frame column is not less than 300mm long, the bent portion 33 is not less than 150mm long, and the length of the straight bolt 32 embedded in the water-sprinkling frame beam is longer than that of the straight bolt 31 embedded in the water-sprinkling frame column. That is, the length of the stainless steel bolt 3 protruding from the top of the water-sprinkling frame column 1 must exceed the height of the water-sprinkling frame beam 2 by 30mm.

[0026] The center distance of stainless steel bolt 3 from the edge of water-sprinkling frame column 1 shall not be less than 100mm.

[0027] Stainless steel bolt 3 is a 316L stainless steel bolt. Stainless steel bolt 3 needs to be pre-embedded in the top of the water spray frame column 1. The specification of stainless steel bolt 3 is not less than M28.

[0028] Even better, a stainless steel bolt 3 is pre-embedded at the top of each simply supported water-sprinkling frame beam 2 on which a water-sprinkling frame column 1 is supported.

[0029] Furthermore, neoprene rubber gaskets 6 are installed on the contact surfaces of the water-sprinkling frame column 1 and the water-sprinkling frame beam 2. When preparing to hoist the beam, the 20mm neoprene rubber gaskets 6 must be placed on the beam-column contact surface beforehand, and the contact surface must be cleaned and ground as necessary to ensure its flatness, thereby guaranteeing the airtightness and waterproofness of the beam-column contact area. When the pre-embedded stainless steel bolts 3 pass through the neoprene rubber gaskets 6, the opening size of the neoprene rubber gaskets 6 must not exceed the diameter of the stainless steel bolts 3.

[0030] Furthermore, the reserved bolt hole 7 is a φ60 hole, which serves as the mounting hole for the pre-embedded bolt.

[0031] Furthermore, after the water-spraying frame beam 2 is positioned, the reserved bolt holes 7 on the water-spraying frame beam 2 are cleaned. The reserved bolt holes on the beam need to be cleaned to remove concrete residue and other impurities. After wetting, epoxy mortar 8 is poured. After the epoxy mortar 8 solidifies, the top surface needs to be cleaned and polished. After placing the stainless steel shim 5, the stainless steel nut 4 is tightened, and the installation is completed.

[0032] The stainless steel gasket 5 is a specially made gasket, and its size should be no less than 20mm smaller than the size of the pre-reserved bolt hole 7 on the beam, which can ensure that the tightening force of the stainless steel nut 4 can be applied to the top surface of the water-spraying frame beam 2.

[0033] The installation process of this utility model is as follows:

[0034] 1. Determine the node positions of beams and columns based on the beam and column layout of the water-sprinkler structure.

[0035] 2. Pre-embed bolts according to the position and size requirements of the reserved bolts specified in the technical solution.

[0036] 3. After the column is hoisted, verify the positions of the pre-embedded bolts. Once confirmed, install the 20mm thick neoprene rubber gasket at the top of the column. During installation, ensure the top surface of the column is flat and that the gasket is properly sealed and waterproof in contact with the top surface.

[0037] 4. Position and hoist the structural beams.

[0038] 5. After the beam system is hoisted, the holes are cleaned and epoxy mortar is poured into the reserved holes.

[0039] 6. Finally, install the gaskets and nuts to ensure the stability of the beam-column joint.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A beam-column simply supported connection node structure suitable for cooling tower water spray frame, characterized in that: The system includes a water-sprinkling frame column (1) and a water-sprinkling frame beam (2). The connection nodes of the water-sprinkling frame column (1) and the water-sprinkling frame beam (2) are simply supported. The simply supported connection means that a stainless steel bolt (3) is pre-embedded at the top of the water-sprinkling frame column (1), and a bolt hole (7) is reserved on the water-sprinkling frame beam (2). The stainless steel bolt (3) passes through the reserved bolt hole (7) and is tightened with a stainless steel nut (4). A stainless steel washer (5) is provided between the stainless steel nut (4) and the water-sprinkling frame beam (2).

2. The beam-column simply supported connection node structure suitable for cooling tower water spray frame according to claim 1, characterized in that: Both the water-sprinkling frame column (1) and the water-sprinkling frame beam (2) are prefabricated structures.

3. The beam-column simply supported connection node structure suitable for cooling tower water spray frame according to claim 1, characterized in that: The stainless steel bolt (3) includes a straight bolt (31) embedded in the water-sprinkling frame column, a straight bolt (32) embedded in the water-sprinkling frame beam, and a bent part (33). The straight bolt (31) embedded in the water-sprinkling frame column and the straight bolt (32) embedded in the water-sprinkling frame beam are coaxial and are an integral structure.

4. A beam-column simply supported connection node structure suitable for cooling tower water spray frame according to claim 3, characterized in that: The straight bolt (31) embedded in the water-sprinkling frame column is not less than 300mm, the bending part (33) is not less than 150mm in length, and the straight bolt (32) embedded in the water-sprinkling frame beam is longer than the straight bolt (31) embedded in the water-sprinkling frame column.

5. A beam-column simply supported connection node structure suitable for cooling tower water spray frame according to claim 3, characterized in that: The center distance between the stainless steel bolt (3) and the edge of the water-sprinkling frame column (1) shall not be less than 100mm.

6. A beam-column simply supported connection node structure suitable for cooling tower water spray frame according to claim 1, characterized in that: Neoprene rubber gaskets (6) are provided on the contact surfaces of the water-sprinkling frame column (1) and the water-sprinkling frame beam (2).

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