Underwater anti-corrosion structure of steel structure hinged column foot

Abstract

The utility model belongs to the technical field of building waterproofing, and discloses an underwater anti-corrosion structure of a steel structure hinged column foot, which comprises a steel stand column and an embedded part, the embedded part is embedded in the center of the top of a column foot foundation, an end plate is arranged at the bottom of the steel stand column, an outer sleeve is fixedly connected to the center of the bottom of the end plate, and an inner sleeve is fixedly connected to the center of the top of the embedded part. Mounting holes, anti-corrosion steel sleeves of column feet and embedded parts are formed in the two opposite sides of the outer sleeve and the inner sleeve in the length direction at equal intervals in a matched mode, vertical columns are welded in a surrounding mode to prevent steam from entering a joint area, hinged joints can rotate in the anti-corrosion steel sleeves, and the steel sleeves are thin in wall thickness and can enable the joints to rotate through deformation; and under the condition that the stress requirement of the node structure is guaranteed, the isolation and corrosion prevention effects are achieved, and certain innovativeness is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of building waterproofing technology, specifically relating to an underwater anti-corrosion structure for a steel structure hinged column base. Background Technology

[0002] Steel structures are increasingly widely used in the construction industry due to their advantages such as light weight, high strength, good seismic and impact resistance, and fast construction speed. They have also become one of the best choices for large-span and complex-shaped structures. However, because steel materials have poor corrosion resistance, corrosion protection schemes should be comprehensively considered based on the importance of the building and environmental corrosion conditions during steel structure design. The "Steel Structure Design Standard" GB50017-2017 requires that steel structure column base joints be wrapped with low-strength plain concrete, and the wrapping height should be no less than 150mm above the outdoor ground level. For conventional rigid steel column bases, column base deformation is small, and cracking of the plain concrete is not easily caused. However, for hinged column bases, especially when the building design involves underwater column bases, when the structural system requires the column base joints to rotate to release bending moments, the rotation of the joints can cause cracking of the plain concrete. Using only conventional column base wrapping methods, water can seep into the interior through concrete cracks and corrode the steel structure columns and joints, affecting the durability of the structure. Therefore, it is necessary to propose a corrosion protection method for underwater hinged steel structure column bases to overcome the above problems. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an underwater anti-corrosion structure for steel structure hinged column bases to solve the existing problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An underwater anti-corrosion structure for a steel hinged column base includes a steel column and an embedded part. The embedded part is embedded in the center of the top of the column base foundation. An end plate is provided at the bottom of the steel column. An outer sleeve is fixedly connected to the center of the bottom of the end plate. An inner sleeve is fixedly connected to the center of the top of the embedded part. The outer sleeve and the inner sleeve have equally spaced mounting holes on opposite sides along their length. The inner sleeve is inserted into the outer sleeve and connected by stainless steel bolts passing through the corresponding two sets of mounting holes. The diameter of the stainless steel bolts is smaller than the diameter of the mounting holes.

[0006] A corrosion-resistant steel sleeve is welded between the steel column and the embedded part. The steel column is covered with a ring of waterproof concrete, which extends to the top of the column base. The waterproof concrete is covered with a ring of waterproof membrane, which extends to the ground. A fixing structure is provided on the top of the waterproof concrete for fastening.

[0007] In a preferred embodiment of this utility model, the mounting holes of the inner sleeve and the outer sleeve are respectively vertically arranged elongated holes and round holes. Adjusting pads are fitted on both ends of the stainless steel bolt, and the opening in the middle of the adjusting pad is also the round hole. The outer sleeve is adjusted to be perpendicular to the inner sleeve through the elongated holes, and the outer sleeve is fixed to be perpendicular to the inner sleeve by welding to the adjusting pads.

[0008] In a preferred embodiment of this utility model, a plurality of reinforcing plates are evenly arranged between the bottom of the end plate and the four sides of the outer sleeve.

[0009] In a preferred embodiment of this utility model, the fixing structure includes an edge-retaining aluminum clamp, which is sleeved on the outside of the steel column and located around the top of the waterproof concrete. The edge-retaining aluminum clamp securely connects the top edge of the waterproof concrete to the steel column by connecting screws.

[0010] In a preferred embodiment of this utility model, the interior of the edge-sealing aluminum clamp is filled with asphalt sealant.

[0011] In a preferred embodiment of this utility model, the waterproof concrete is P6 impermeable waterproof concrete, and the waterproof concrete is provided with a wire mesh to prevent cracking. The height of the waterproof concrete is 150mm above the ground or water surface.

[0012] In a preferred embodiment of this utility model, the bottom edge of the waterproof membrane is continuously constructed with the civil engineering waterproof membrane to form a closed loop.

[0013] In a preferred embodiment of this utility model, the anti-corrosion steel sleeve is provided with two anti-corrosion steel sleeves, the cross-section of the anti-corrosion steel sleeve is L-shaped, and it is provided with a vertical plate and a bottom plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The anti-corrosion steel sleeve and embedded parts of the column base, and the column welded together, prevent water vapor from entering the joint area. The hinged joint can rotate inside the anti-corrosion steel sleeve. The steel sleeve wall is relatively thin and can rotate the joint through deformation. It plays a role in isolation and anti-corrosion while ensuring the stress requirements of the joint structure, which is quite innovative.

[0016] 2. The outer side of the hinged column base is wrapped with P6 impermeable and waterproof concrete and steel wire mesh. The outer side of the concrete is wrapped with waterproof membrane and continuously constructed with the civil engineering waterproof membrane to form a seal. This can effectively isolate water vapor from corroding the steel column, improve the structural durability and safety, and has certain advantages.

[0017] 3. The top of the outer concrete is secured with aluminum hoops and fixed with connecting screws. The metal hoops act as a formwork, and the interior is sealed with asphalt sealant, which has certain advantages. Attached Figure Description

[0018] Figure 1 The diagram shows the overall planar structure of this utility model.

[0019] Figure 2 This is a front view of the steel connection structure of this utility model;

[0020] Figure 3 This is a top view of the steel connection structure of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of an anti-corrosion steel sleeve.

[0022] In the diagram: 1. Steel column; 2. Waterproof concrete; 3. Anti-corrosion steel sleeve; 31. Vertical plate; 32. Base plate; 4. End plate; 5. Outer sleeve; 6. Adjusting pad; 7. Stainless steel bolt; 8. Inner sleeve; 9. Reinforcing plate; 10. Embedded parts; 11. Waterproof membrane; 12. Asphalt sealant; 13. Edge-finishing aluminum clamp; 14. Connecting screw; 15. Column base. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Please refer to Figure 1-4 As shown, an embodiment of this application provides an underwater anti-corrosion structure for a steel hinged column base, including a steel column 1 and an embedded part 10. The embedded part 10 is embedded in the center of the top of the column base 15. An end plate 4 is provided at the bottom of the steel column 1. An outer sleeve 5 is fixedly connected to the center of the bottom of the end plate 4. An inner sleeve 8 is fixedly connected to the center of the top of the embedded part 10. The outer sleeve 5 and the inner sleeve 8 are provided with mounting holes at equal intervals along the length on opposite sides. The inner sleeve 8 is inserted into the outer sleeve 5 and connected by stainless steel bolts 7 passing through the corresponding two sets of mounting holes. The diameter of the stainless steel bolts 7 is smaller than the diameter of the mounting holes.

[0026] A corrosion-resistant steel sleeve 3 is welded between the steel column 1 and the embedded part 10. The steel column 1 is covered with a ring of waterproof concrete 2, which extends to the top of the column base 15. The waterproof concrete 2 is covered with a ring of waterproof membrane 11, which extends to the ground. A fixing structure is set on the top of the waterproof concrete 2 for fastening.

[0027] In a preferred embodiment of this utility model, the mounting holes of the inner sleeve 8 and the outer sleeve 5 are respectively vertically arranged elongated holes and round holes. Adjusting pads 6 are fitted on both ends of the stainless steel bolt 7. The opening in the middle of the adjusting pad 6 is also a round hole. The outer sleeve 5 is adjusted to be perpendicular to the inner sleeve 8 through the elongated holes. The outer sleeve 5 is fixed to be perpendicular to the inner sleeve 8 by welding to the adjusting pad 6.

[0028] In a preferred embodiment of the present invention, a plurality of reinforcing plates 9 are evenly provided between the bottom of the end plate 4 and the four sides of the outer sleeve 5.

[0029] In a preferred embodiment of the present invention, the fixing structure further includes an edge-sealing aluminum clamp 13, which is sleeved on the outside of the steel column 1 and located around the top of the waterproof concrete 2. The edge-sealing aluminum clamp 13 is fastened to the top edge of the waterproof concrete 2 and the steel column 1 by connecting screws 14.

[0030] In a preferred embodiment of the present invention, the interior of the edge-sealing aluminum clamp 13 is further filled with asphalt sealant 12.

[0031] In a preferred embodiment of this utility model, the waterproof concrete 2 is further P6 impermeable waterproof concrete 2, and the waterproof concrete 2 is provided with a wire mesh to prevent cracking. The height of the waterproof concrete 2 is 150mm higher than the ground or water surface.

[0032] In a preferred embodiment of this utility model, the bottom edge of the waterproof membrane 11 is continuously constructed with the civil engineering waterproof membrane 11 to form a closed loop.

[0033] In a preferred embodiment of the present invention, the anti-corrosion steel sleeve 3 is further provided with two anti-corrosion steel sleeves, the cross-section of the anti-corrosion steel sleeves is L-shaped, and is provided with a vertical plate 31 and a bottom plate 32.

[0034] Specifically, in order to overcome the shortcomings of existing products, this utility model proposes a method for corrosion protection of underwater hinged column bases for steel structures.

[0035] This anti-corrosion joint method mainly consists of the following components:

[0036] (1) Steel column 1, end plate 4.

[0037] (2) The column base connection node consists of: outer sleeve 5, inner sleeve 8, stainless steel bolt 7, and error adjustment pad 6 and reinforcing plate 9.

[0038] (3) Bottom embedded part 10.

[0039] (4) Two anti-corrosion steel sleeves 3 are used on both sides of the hinged column base to isolate the node from the outside.

[0040] (5) All steel components of the column base are galvanized for corrosion protection. In the immersion environment, the outer surface of the steel components is painted with epoxy resin paint for secondary corrosion protection.

[0041] (6) The outer side of the column base is wrapped with P6 waterproof concrete 2, and steel wire mesh is installed inside the concrete to prevent cracking; the height of the waterproof concrete 2 is 150mm higher than the ground or water surface.

[0042] (7) P6 waterproof concrete 2 is wrapped with continuous waterproof membrane 11 on the outside. The edge of the column base waterproof membrane 11 and the civil engineering waterproof membrane 11 are continuously constructed to form a seal.

[0043] (8) The top of the outer concrete is fastened with aluminum clamps 13 and fixed with connecting screws 14;

[0044] (9) The metal hoop is sealed with asphalt sealant 12 inside.

[0045] The outer sleeve 5 is welded to the end plate 4 of the steel column 1, and the inner sleeve 8 is welded to the embedded part 10. The outer sleeve 5 and the inner sleeve 8 are fitted together and connected by stainless steel bolts 7. The inner sleeve 8 has a round hole, and the outer sleeve 5 has a vertical elongated hole for adjusting the height difference of the main structure. The bolt adjusting shim 6 (structural steel shim) also has a round hole. After the column base position is adjusted, the structural steel shim and the outer sleeve 5 are welded together for fixation.

[0046] The anti-corrosion steel sleeve 3 has a relatively thin wall thickness. Two sleeves are used on both sides of the column base node to cover the connection node and isolate it from the outside. The anti-corrosion steel sleeve 3, the embedded part 10, and the column are welded together to prevent water vapor from entering the node area. The connection node can rotate slightly inside the anti-corrosion steel sleeve 3. The anti-corrosion steel sleeve 3 has a relatively thin wall thickness and can rotate the connection node through deformation, so as to play a role in corrosion protection while ensuring that the node structure is under stress. The slight rotation of the steel column 1 is achieved through the clearance fit between the elongated hole, the round hole and the stainless steel bolt 7.

[0047] With the above structural design, this technology has the following advantages:

[0048] 1. The anti-corrosion steel sleeve 3 and the embedded part 10 of the column base are welded to prevent water vapor from entering the node area. The hinged node can rotate inside the anti-corrosion steel sleeve 3. The steel sleeve has a relatively thin wall thickness and can rotate the node through deformation. It plays a role in isolation and anti-corrosion while ensuring the stress requirements of the node structure, which is innovative.

[0049] 2. The outer side of the hinged column base is wrapped with P6 waterproof concrete 2 and steel wire mesh. The outer side of the concrete is wrapped with waterproof membrane 11 and continuously constructed with the civil engineering waterproof membrane 11 to form a seal. This can effectively isolate water vapor from corroding the steel column, improve the structural durability and safety, and has certain advantages.

[0050] 3. The top of the outer concrete is secured with aluminum hoops 13 and fixed with connecting screws 14. The metal hoops act as a formwork and the interior is sealed with asphalt sealant 12, which has certain advantages.

[0051] Finally, it should be noted that the above description is merely a preferred 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 underwater anti-corrosion structure for a steel hinged column base, comprising a steel column (1) and an embedded part (10), wherein the embedded part (10) is embedded in the center of the top of the column base foundation (15), characterized in that: The bottom of the steel column (1) is provided with an end plate (4), and an outer sleeve (5) is fixedly connected to the center of the bottom of the end plate (4). An inner sleeve (8) is fixedly connected to the center of the top of the embedded part (10). The outer sleeve (5) and the inner sleeve (8) are provided with mounting holes at equal intervals along the length of their opposite sides. The inner sleeve (8) is inserted into the outer sleeve (5) and connected by passing through the corresponding two sets of mounting holes with stainless steel bolts (7). The diameter of the stainless steel bolts (7) is smaller than the diameter of the mounting holes. A corrosion-resistant steel sleeve (3) is welded between the steel column (1) and the embedded part (10). The steel column (1) is covered with a ring of waterproof concrete (2). The waterproof concrete (2) extends to the top of the column base (15). The waterproof concrete (2) is covered with a ring of waterproof membrane (11). The waterproof membrane (11) extends to the ground. A fixing structure is provided on the top of the waterproof concrete (2) for fastening.

2. The underwater anti-corrosion structure for a steel structure hinged column base according to claim 1, characterized in that: The mounting holes of the inner sleeve (8) and the outer sleeve (5) are respectively vertically arranged elongated holes and round holes. Both ends of the stainless steel bolt (7) are fitted with adjusting pads (6), and the opening in the middle of the adjusting pads (6) is also the round hole. The outer sleeve (5) is adjusted to be perpendicular to the inner sleeve (8) through the elongated holes. The outer sleeve (5) is fixed to be perpendicular to the inner sleeve (8) by welding to the adjusting pads (6).

3. The underwater anti-corrosion structure for a steel structure hinged column base according to claim 2, characterized in that: Multiple reinforcing plates (9) are evenly arranged between the bottom of the end plate (4) and the four sides of the outer sleeve (5).

4. The underwater anti-corrosion structure for a steel structure hinged column base according to claim 1, characterized in that: The fixing structure includes an edge-sealing aluminum clamp (13), which is fitted around the outside of the steel column (1) and around the top of the waterproof concrete (2). The edge-sealing aluminum clamp (13) is fastened to the top edge of the waterproof concrete (2) and the steel column (1) by connecting screws (14).

5. The underwater anti-corrosion structure for a steel structure hinged column base according to claim 4, characterized in that: The interior of the edge-sealing aluminum clamp (13) is filled with asphalt sealant (12).

6. The underwater anti-corrosion structure for a steel structure hinged column base according to claim 1, characterized in that: The waterproof concrete (2) is P6 impermeable waterproof concrete (2), and the waterproof concrete (2) is equipped with a wire mesh to prevent cracking. The height of the waterproof concrete (2) is 150mm higher than the ground or water surface.

7. The underwater anti-corrosion structure for a steel structure hinged column base according to claim 6, characterized in that: The bottom edge of the waterproof membrane (11) is continuously constructed with the civil engineering waterproof membrane (11) to form a closed structure.

8. The underwater corrosion protection structure for a steel structure hinged column base according to claim 1, characterized in that: The anti-corrosion steel sleeve (3) is provided with two anti-corrosion steel sleeves. The cross-section of the anti-corrosion steel sleeve is L-shaped and is provided with a vertical plate (31) and a bottom plate (32).

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