Steel stand column structure
By introducing a combination of water-stop plates, waterproof mortar layers, and self-compacting concrete layers into the steel column structure, the problem of water seepage in steel columns was solved, and the waterproofing effect and construction quality of the basement were improved.
Patent Information
- Application Number
- CN202520231488.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-13
AI Technical Summary
The existing steel columns pose a risk of water seepage in the foundation pit support, leading to cracks and leaks in the base slab, which affects the reliability and durability of the basement.
The steel column structure includes the steel column body, waterstop plate, closed-cell sponge block, WP15 waterproof mortar layer and self-compacting concrete layer. A waterproof barrier is formed by welding and pouring, and epoxy resin grouting material is used to fill the gaps to improve waterproof performance.
It effectively reduces water seepage inside the steel columns of the basement, ensures the normal use of the basement, improves construction quality and safety, reduces the risk of leakage and cracking, and guarantees the convenience and comfort of residents' lives.
Smart Images
Figure CN223675570U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a steel stand column structure. BACKGROUND
[0002] In the process of rapid urbanization today, commercial complex buildings, as an important part of urban space, their construction technology and quality requirements are increasing. Especially in the foundation pit support stage of construction, in order to effectively support and stabilize the foundation pit structure, support beam form is widely used, especially in dealing with the dead weight problem of large span support beam, this method is particularly important.
[0003] In order to deal with the dead weight challenge of large span support beam, the design unit usually tends to use stand column pile as support rod in the design process, in order to disperse and bear the weight of support beam. According to the different forms of stand column structure, stand column pile can be divided into many types, including reinforced concrete stand column pile, lattice column stand column pile and steel stand column pile. Although these stand column pile types have their own characteristics, they also have some limitations in practical application.
[0004] Specifically, although the reinforced concrete stand column pile is solid in structure, its cost is relatively high, which increases the engineering cost. Although the lattice column stand column pile can reduce the cost to a certain extent, its treatment with the structure plate node is relatively complex, and the construction difficulty is large. Therefore, the use of steel stand column as the supporting measure of support beam is more popular in the market at present, because it not only has good bearing performance, but also relatively simple construction and moderate cost.
[0005] However, although the steel stand column has many advantages, it still faces some problems to be solved in practical application. For example, in the steel stand column inside the bottom plate range, the concrete may not be completely dense due to the limitation of pouring process, leaving water seepage hidden danger. In addition, when the bottom plate steel stand column is cut off and removed after completing its supporting function, the inner wall is easy to form water seepage path, which further aggravates the risk of bottom plate leakage.
[0006] These problems not only may cause a large number of cracks and leakage in the bottom plate, but also greatly reduce the reliability and durability of the basement structure, which poses a serious threat to the normal use and safe operation of the subsequent project. Therefore, it is urgent to need a new technical scheme to solve the water seepage hidden danger of the existing steel stand column in the foundation pit support, improve the construction quality and safety of commercial complex building. INVENTION CONTENTS
[0007] In order to overcome the shortcomings of the prior art, the steel stand column structure is provided, which aims to reduce the leakage, cracking and water gushing of the basement floor, effectively guarantee the convenience and comfort of residents' life.
[0008] The utility model discloses a technical means that solves its technical problem is: a steel stand structure, its improvement lies in, including steel stand body, water stop piece, closed cell sponge block, WP15 waterproof mortar layer and self-compacting concrete layer, wherein,
[0009] The steel stand body is bent and rolled into a circle from raw material steel plate, and the inner wall and the outer wall are welded with the water stop piece on both sides, and the water stop piece extends along the ring of the steel stand body;
[0010] The interface of the water stop piece and the longitudinal seam of the steel stand body are connected through bevel welding; the closed cell sponge block is fixedly bonded below the water stop piece;
[0011] The inner waterproof section of the steel stand body penetrates the basement floor as a reinforcing section, the water stop piece is located above 30cm below the floor surface, and a waterproof barrier is formed; the top penetrating section of the steel stand body is chiseled to remove loose concrete above 10cm below the water stop piece, and after removing the closed cell sponge block, the WP15 waterproof mortar layer is laid on the top surface of the concrete;
[0012] The WP15 waterproof mortar layer is poured with the self-compacting concrete layer.
[0013] In the above technical solution, the water stop piece is a steel sheet with a width of 50mm and a thickness of 3mm, and the material is Q235B.
[0014] In the above technical solution, the bevel welding angle is 45°, the weld height is 5mm, and the weld surface is smooth without cracks.
[0015] In the above technical solution, the height of the closed cell sponge block is 10cm, the width is consistent with the water stop piece, the material is low-density polyether with a density of 30kg / m3, and it is used for temporarily fixing the water stop piece and preventing concrete from penetrating.
[0016] In the above technical solution, the mix ratio of the WP15 waterproof mortar layer is cement:sand:waterproof agent
[0017] =1:2:0.05.
[0018] In the above technical solution, the strength grade of the self-compacting concrete layer is one grade higher than that of the bottom plate concrete, which is C40, the slump is 180mm, and the spread is 500mm.
[0019] In the above technical solution, the gap between the penetrating section of the steel stand body and the basement floor is filled with epoxy resin grouting material, and the compressive strength of the epoxy resin grouting material is 50MPa.
[0020] In the above technical solution, the surface of the steel stand body is brushed with epoxy zinc-rich primer and polyurethane topcoat, and the total thickness of the paint film is 150μm.
[0021] The utility model discloses the beneficial effect is:
[0022] After using this type steel stand, the situation of the water seepage in the bottom plate steel stand can be greatly reduced, and the normal use of the basement parking function in the later period is guaranteed;The steel stand can be directly produced in the factory, and the welding operation is simple, the welding seam can be detected on the spot, the water stop effect is guaranteed, and the quality stability is high;During the construction process of the basement bottom plate leveling layer, by removing the concrete and sponge strip on the top of the stand pile, brushing waterproof mortar and pouring micro-expansion concrete, the basement floor leakage, cracking and water gushing can be greatly reduced, and the convenience and comfort of the residents' life are effectively guaranteed. BRIEF DESCRIPTION OF DRAWINGS
[0023] Fig. 1 A steel stand structure schematic diagram shown in an embodiment of the utility model;
[0024] Fig. 2 A steel stand body internal structure schematic diagram shown in an embodiment of the utility model. DETAILED DESCRIPTION
[0025] The utility model will be further described below in combination with the drawings and embodiments.
[0026] The concept, specific structure and generated technical effects of the utility model will be described clearly and completely in combination with the embodiments and drawings, so that the purpose, features and effects of the utility model can be fully understood. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and other embodiments obtained by the skilled in the art without creative labor on the basis of the embodiments of the utility model all belong to the protection scope of the utility model. In addition, all the coupling / connection relations involved in the patent do not mean that the components are directly connected, but means that a better coupling structure can be composed by adding or reducing coupling auxiliary components according to the specific implementation situation. The various technical features in the utility model creation can be interactively combined without mutual contradiction and conflict.
[0027] As Figs. 1-2 Indicated, the application provides a kind of steel stand structure, including steel stand body 1, water stop piece 2, closed-cell sponge block 3, WP15 waterproof mortar layer 4 and self-compacting concrete layer 5, wherein,
[0028] The steel stand body 1 is bent and rolled into a circle by raw material steel plate, and the inner wall and the outer wall are double-sided welded with the water stop piece 2, and the water stop piece 2 extends along the ring direction of the steel stand body 1;
[0029] The interface of the water stop piece 2 and the longitudinal seam of the steel stand body 1 are connected by bevel welding;The closed-cell sponge block 3 is bonded and fixed below the water stop piece 2;
[0030] The through section of the steel column body 1 penetrates the basement floor as a reinforcing section, the water stop piece 2 is located above 30 cm below the floor surface, and a waterproof barrier is formed; the top through section of the steel column body 1 removes loose concrete to above 10 cm below the water stop piece, and after removing the closed-cell sponge block 3, the WP15 waterproof mortar layer 4 is laid on the top surface of the concrete;
[0031] The WP15 waterproof mortar layer 4 is poured with the self-compacting concrete layer 5.
[0032] The utility model in the production process to the steel plate raw material of the steel column which penetrates the basement floor section double-sided welds water stop piece, and bents into steel pipe column, can effectively play to avoid the situation of seepage along the inner wall of the basement steel column; in later period, before the terrace construction, the concrete on the top of the column is removed, the sponge strip under the water stop piece is removed, and dense concrete is poured, thereby effectively prolonging the seepage path of the inner wall of the steel column, greatly avoiding the situation of seepage of loose concrete on the top of the column, and completing the water stop and protection of the whole steel column.
[0033] In a possible implementation, the water stop piece 2 is a steel sheet with a width of 50 mm and a thickness of 3 mm, and the material is Q235B; Q235B steel has a certain elongation, strength, good toughness and castability, and is easy to stamp and weld; in addition, it also has the characteristics of high strength and corrosion resistance, so that the spiral steel pipe can withstand a large pressure and tension, and ensure the safety and reliability of the conveying process.
[0034] In a possible implementation, the bevel welding angle is 45°, the weld height is 5 mm, the weld surface is smooth and crack-free, and the weld of the bevel welding is detected by ultrasonic wave to ensure that the welding quality meets the standard.
[0035] In a possible implementation, the height of the closed-cell sponge block 3 is 10 cm, the width is consistent with the water stop piece 2, the material is low-density polyether, the density is 30 kg / m3, and it is used for temporarily fixing the water stop piece 2 and preventing concrete from seeping in.
[0036] In a possible implementation, the mixing ratio of the WP15 waterproof mortar layer 4 is cement:sand:waterproof agent = 1:2:0.05, which can significantly improve the waterproof performance, ensure good construction and workability and bonding force, control the cost, and enhance the structural stability and durability.
[0037] In a possible implementation, the strength grade of the self-compacting concrete layer 5 is one grade higher than that of the floor concrete, which is C40, the slump is 180 mm, and the spread is 500 mm, which can ensure the high strength, good flowability and stability of the concrete, improve the construction efficiency and quality, reduce segregation, and enhance the overall performance of the structure.
[0038] In a possible implementation, the gap between the through section of the steel column body 1 and the basement floor is filled with an epoxy grouting material with a compressive strength of 50 MPa, which can enhance structural stability, improve overall compressive performance, ensure construction quality and safety, and has good corrosion resistance and durability.
[0039] In a possible implementation, the surface of the steel column body 1 is coated with an epoxy zinc-rich primer and a polyurethane topcoat, with a total paint film thickness of 150 microns, which can effectively improve its corrosion resistance, enhance adhesion, and ensure the aesthetics and coating effect of the coating; at the same time, a good coating can also increase the durability and service life of the steel column, and resist the erosion of the external environment.
[0040] After using the steel column structure provided by the utility model, the water seepage inside the bottom plate steel column can be greatly reduced, ensuring the normal use of the basement parking function in the later period. The steel column can be directly produced by the manufacturer, the welding operation is simple, the welding seam can be detected on the spot, the water stopping effect is guaranteed, and the quality stability is high. During the subsequent basement floor leveling layer construction process, by removing the concrete and sponge strips on the top of the column pile, brushing waterproof mortar, pouring micro-expansion concrete and other processes, the leakage, cracking and water gushing of the basement floor can be greatly reduced, effectively ensuring the convenience and comfort of residents' life.
[0041] The above is a specific description of the preferred implementation of the utility model, but the utility model creation is not limited to the embodiments described above. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the utility model, and these equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.
Claims
1. A steel column structure, characterized by, The steel column body, the water stop sheet, the closed-cell sponge block, the WP15 waterproof mortar layer and the self-compacting concrete layer are included. The steel column body is formed by bending and rolling a raw material steel plate into a circular shape, and the inner wall and the outer wall are double-welded with the water stop sheet, which extends along the ring direction of the steel column body. The interface of the water stop sheet and the longitudinal seam of the steel column body are connected by bevel welding. The closed-cell sponge block is fixed below the water stop sheet. The inner waterproof section of the steel column body is used as a reinforcing section and penetrates the basement floor, and the water stop sheet is located above 30 cm below the floor surface to form a waterproof barrier.
2. A steel column structure according to claim 1, wherein The WP15 waterproof mortar layer is laid on the top surface of the concrete after the closed-cell sponge block is removed.
3. A steel column structure according to claim 1, wherein The water stop sheet is a steel sheet with a width of 50 mm and a thickness of 3 mm, and the material is Q235B.
4. A steel column structure according to claim 2, wherein The height of the closed-cell sponge block is 10 cm, the width is consistent with the water stop piece, and the material is low-density polyether with a density of 30 kg / m 3 , for temporarily fixing the water stop piece and preventing concrete from penetrating.
5. A steel column structure according to claim 1, wherein The bevel welding angle is 45°, and the weld height is 5 mm with a smooth surface without cracks.
6. A steel column structure according to claim 1, wherein The mixing ratio of the WP15 waterproof mortar layer is cement:sand:waterproof agent=1:2:0.
05.
7. A steel column structure according to claim 1, wherein The strength grade of the self-compacting concrete layer is one grade higher than that of the basement concrete, which is C40, the slump is 180 mm, and the spread is 500 mm.
8. A steel column structure according to claim 1, wherein The gap between the penetrating section of the steel column body and the basement floor is filled with epoxy grouting material with a compressive strength of 50 MPa. The surface of the steel column body is coated with epoxy zinc-rich primer and polyurethane topcoat, and the total thickness of the paint film is 150 μm.