Basement side wall steel frame column construction joint water stop structure

Abstract

The utility model relates to water stop structure design technical field, concretely relates to a basement side wall steel frame column place construction joint water stop structure. Include: bottom plate, the upper side is connected with steel frame column and basement side wall, the steel frame column is provided with the concrete cladding, the basement side wall sets up at both sides of concrete cladding, the concrete cladding is connected in the one end of basement outside side of the concrete cladding. In this application, through the three -sided enclosure system that forms with basement side wall of retaining wall, cover steel frame column and the leakage area of bottom plate junction, promote sealing integrity. Continuous waterproof assembly penetrates retaining wall and side wall, ensure the waterproof continuity at steel frame column, solve the break problem of water stop assembly in the prior art because of steel frame column. The close combination of concrete cladding and steel frame column strengthens the structural integrity, resists the synergistic effect of groundwater pressure and earth pressure, reduces the gap expansion because of external force.

Description

Technical Field

[0001] This utility model relates to the field of water-stop structure design technology, specifically to a water-stop structure for construction joints at steel frame columns on the side walls of basements. Background Technology

[0002] During basement construction, steel-framed columns are located on the side walls of the basement, which are situated on either side of these columns. The columns are quite tall, making it impossible to pour them simultaneously with the basement floor slab and side walls. A construction joint exists between the concrete outer casing of the steel-framed columns and the floor slab. In this situation, during waterproofing, the waterproofing components within the basement side walls break at the steel-framed columns due to their inherent structure, reducing the effectiveness of the waterproofing. Utility Model Content

[0003] In view of this, the present invention provides a construction joint water-stopping structure at the steel frame column of the basement side wall to solve the problem that the water-stopping component is broken at the steel frame column, thus affecting the water-stopping effect.

[0004] This utility model provides a construction joint waterproofing structure for steel frame columns on the side wall of a basement, including:

[0005] The base slab is connected to steel frame columns and basement side walls on top. The steel frame columns are encased in concrete, and the basement side walls are located on both sides of the encased concrete.

[0006] A retaining wall, connected to the end of the outer concrete casing facing the outside of the basement;

[0007] The retaining wall and the basement sidewall surround three sides of the steel frame column, and the retaining wall and the basement sidewall have continuous waterproof components.

[0008] In this application, a three-sided enclosure system is formed by the retaining wall and the basement sidewalls, covering the leakage area at the junction of the steel frame column and the base slab, thus improving the sealing integrity. A continuous waterproofing component penetrates the retaining wall and sidewalls, ensuring waterproofing continuity at the steel frame column and resolving the problem of water-stop components breaking due to the steel frame column in existing technologies. The tight bond between the outer concrete casing and the steel frame column enhances the overall structural integrity, resisting the combined effects of groundwater pressure and soil pressure, and reducing crack expansion caused by external forces.

[0009] In one alternative embodiment, a continuous first construction joint is provided between the retaining wall and the base slab, and between the base slab and the basement sidewall, and a second construction joint is provided between the base slab and the outer concrete casing, wherein the first construction joint is higher than the second construction joint.

[0010] In this application, the high and low construction joints form a stepped waterproof barrier, effectively extending the groundwater seepage path. The first construction joint is located on the water-facing side, serving as the first line of defense to intercept most of the water pressure, while the second construction joint receives residual seepage. This double barrier significantly reduces the seepage force. The layered structure adapts to the construction characteristics of staged pouring of the basement floor slab and side guide walls, avoiding concentrated leakage at construction joints caused by the subsequent installation of steel frame columns.

[0011] In one alternative implementation, the continuous waterproofing component includes:

[0012] A continuous water-stop steel plate is installed inside the basement sidewall and retaining wall, and the continuous water-stop steel plate vertically penetrates the first construction joint.

[0013] In this application, a vertically continuous waterstop steel plate eliminates the break points of traditional horizontal waterstop steel plates at the steel frame columns, achieving a full-circumference seal at the construction joint. The continuous waterstop steel plate is anchored within the concrete, forming a rigid waterproof framework that resists deformation caused by groundwater pressure. The tight bond between the continuous waterstop steel plate and the concrete inhibits crack propagation, making it particularly suitable for stress concentration areas where basement sidewalls meet steel frame columns. Furthermore, the continuous waterstop steel plate continuously covers both the retaining wall and the basement sidewall, creating a unified waterproofing system and resolving the problem of waterproofing layer tearing caused by structural misalignment.

[0014] In one optional embodiment, the continuous waterproofing component further includes:

[0015] A waterstop is installed at the first construction joint, and the waterstop is located at the end of the continuous waterstop steel plate facing the outside of the basement.

[0016] In this application, the waterstop and the continuous waterstop steel plate work together to form a waterproof system. The waterstop is installed close to the outer side of the steel plate, and expands upon contact with water to fill the micro-gaps in the construction joint, compensating for the interface gaps that may be caused by concrete shrinkage in the continuous waterstop steel plate. Its position design takes full advantage of the high position of the first construction joint, prioritizing the activation of the expansion sealing function before water seepage contacts the steel plate. The waterstop adapts to the deformation of the concrete structure, reducing the failure of the waterproof layer due to temperature differences or settlement, and is particularly suitable for the long-term pressure environment of deep foundation pit sidewalls.

[0017] In one alternative implementation, the retaining wall and the outer concrete casing are cast as a single unit.

[0018] In this application, the integral casting process eliminates construction cold joints between the retaining wall and the outer concrete, avoiding the problem of weak interface bonding caused by secondary casting. The overall structure enhances the uniformity of stiffness in the steel frame column area, reducing stress concentration cracks caused by stiffness differences.

[0019] In one alternative embodiment, a waterproof coating and waterproof membrane are applied to the outer side of the concrete facing the outside of the basement.

[0020] In this application, a waterproof coating and a waterproof membrane are compositely applied to the outer surface of the concrete casing, forming a multi-layered active protection. The waterproof coating fills the capillary pores of the outer concrete casing, while the waterproof membrane acts as a continuous waterproof membrane to block external water pressure; the two complement each other to enhance impermeability. This provides additional protection for the exposed concrete surface of the steel-framed column casing, offsetting the long-term damage to the concrete from groundwater erosion and soil chemicals.

[0021] In one alternative embodiment, a waterproof membrane is provided on the lower end side of the base plate and on the side facing the outside of the basement.

[0022] In one alternative embodiment, the joint between the waterproof membrane covering the concrete and the waterproof membrane of the base slab is filled with waterproof sealant.

[0023] In this application, a flexible sealant is used to fill the overlap between the base slab and the outer concrete membrane, accommodating deformation caused by differential settlement of the structure. The sealant fills the pores of the membrane joint, forming an elastic transition zone to prevent tearing of the waterproofing layer due to displacement of the base slab and sidewalls. This achieves a seamless connection between the basement base slab and sidewall waterproofing systems, constructing a closed waterproofing system. The chemical stability of the sealant ensures adhesion performance under long-term immersion conditions, preventing the overlap from becoming a weak point for leakage.

[0024] In one alternative implementation, the thickness of the retaining wall is the same as the thickness of the basement sidewall.

[0025] In this application, the uniform thickness design ensures stiffness matching between the retaining wall and the sidewalls, reducing stress concentration and crack formation caused by abrupt changes in thickness. Consistent thickness facilitates the standardized reuse of the formwork system, improving construction efficiency and reducing error rates. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0028] Figure 2 This is a schematic cross-sectional view of embodiment A of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Base slab; 2. Steel frame column; 3. Basement sidewall; 4. Concrete outer casing; 5. Retaining wall; 6. First construction joint; 7. Second construction joint; 8. Continuous waterstop steel plate; 9. Waterstop strip; 10. Waterproof membrane; 11. Waterproof sealant. Detailed Implementation

[0031] 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, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In basement construction, steel-framed columns are installed on the basement side walls, with external concrete columns connecting to the side walls. Due to the considerable height of the steel-framed columns, they cannot be installed directly during the pouring of the basement floor slab and side wall guide walls; they are only pre-embedded. The steel-framed columns can only be installed after the basement floor slab and side wall concrete are poured. This results in construction joints in the basement side walls located at the steel-framed columns, which are prone to leakage, affecting the basement's functionality and structural safety. Traditional waterproofing methods are ineffective and have drawbacks such as complex construction, high cost, and poor durability.

[0033] The shortcomings of existing technology:

[0034] 1. Significant Construction Challenges: The space around the steel-framed columns on the basement exterior walls is relatively narrow, making construction operations quite challenging. Especially at the junction of the steel-framed columns and the concrete foundation slab (the second construction joint), ensuring the accurate installation and effective connection of the waterproofing material requires a high level of construction skill. For example, welding the waterproofing steel plate around the steel-framed columns may be limited by the shape and size of the columns, making it difficult to guarantee weld quality.

[0035] 2. Significant Leakage Risk: Steel frame columns can only be installed after the basement floor slab and side walls have been poured. The water-stop steel plates at the construction joints of the basement side walls cannot be continuous at the steel frame columns due to the complex effects of water and soil pressure on the basement exterior walls. The construction joints at the steel frame columns are weak points prone to leakage, and even with various measures taken during design and construction, it is difficult to completely eliminate leakage. For example, in areas with high groundwater levels or complex geological conditions, leakage problems in basement exterior walls remain prominent.

[0036] 3. High requirements for the construction environment: The construction quality of water-stopping technology is greatly affected by the construction environment. For example, in a damp basement environment, the adhesion and fixation of water-stopping materials may be affected, reducing the water-stopping effect. At the same time, the quality of concrete pouring is also affected by factors such as ambient temperature and humidity, which can easily lead to quality problems such as cracks, thus affecting the water-stopping effect.

[0037] 4. High maintenance costs: If leakage occurs at the steel frame columns of the basement exterior walls, the subsequent repair and maintenance costs will be high. Since basements are usually located at the bottom of a building, repairs are more difficult and require significant manpower, resources, and time. For example, complex repair procedures may be necessary, such as partial excavation, replacement of waterproofing materials, and re-pouring concrete, which not only affects the normal use of the building but also increases maintenance costs.

[0038] Therefore, a new construction joint waterproofing structure for steel frame columns in basements is needed to solve the problems existing in the current technology.

[0039] The following is combined Figures 1 to 2 The following describes embodiments of the present invention.

[0040] According to embodiments of the present invention, such as Figure 1 As shown, a construction joint waterproofing structure for a steel frame column on the side wall of a basement is provided, comprising:

[0041] The base plate 1 is connected to the steel frame column 2 and the basement side wall 3. The steel frame column 2 is provided with an outer concrete 4, and the basement side wall 3 is provided on both sides of the outer concrete 4. The base plate 1 and the basement side wall 3 are formed by pouring concrete. The base plate 1 has pre-embedded parts, and the steel frame column 2 is connected to the base plate 1 through the pre-embedded parts.

[0042] A retaining wall 5 is connected to the end of the outer concrete casing 4 facing the outside of the basement. The retaining wall 5 is positioned on the outside of the basement of the outer concrete casing 4 to avoid difficulties in operation in narrow areas and to reduce the risk of leakage due to inconsistencies in the waterproofing. The retaining wall 5 can be 500mm high and 300mm thick. The distance from the retaining wall 5 to the bottom of the steel frame column 2 can be 500mm. It should be noted that... Figure 2 As shown, the left side is the outer side of the basement, and the right side is the inner side of the basement.

[0043] The retaining wall 5 and the basement side wall 3 are arranged around the three sides of the steel frame column 2, and the retaining wall 5 and the basement side wall 3 have continuous waterproof components.

[0044] In this application, a three-sided enclosure system is formed by the retaining wall 5 and the basement side wall 3, covering the leakage area at the junction of the steel frame column 2 and the base slab 1, thus improving the sealing integrity. A continuous waterproofing component penetrates the retaining wall 5 and the side wall, ensuring waterproofing continuity at the steel frame column 2 and solving the problem of disconnection of the water-stopping component caused by the steel frame column 2 in existing technologies. The tight bond between the outer concrete cladding 4 and the steel frame column 2 enhances the overall structural integrity, resists the combined effects of groundwater pressure and soil pressure, and reduces crack expansion caused by external forces.

[0045] In one alternative implementation, such as Figure 2 As shown, there is a continuous first construction joint 6 between the retaining wall 5 and the base slab 1, and between the base slab 1 and the basement side wall 3. There is a second construction joint 7 between the base slab 1 and the outer concrete cladding 4. The first construction joint 6 is higher than the second construction joint 7. Specifically, the construction joints between the retaining wall 5 and the base slab 1, and between the base slab 1 and the basement side wall 3, are continuous and constitute the first construction joint 6. Both the first construction joint 6 and the second construction joint 7 are horizontal construction joints.

[0046] In this application, the high and low construction joints form a stepped waterproof barrier, effectively extending the groundwater seepage path. The first construction joint 6 is located on the water-facing side, serving as the first line of defense to intercept most of the water pressure, while the second construction joint 7 receives residual seepage. This double barrier significantly reduces the seepage force. The layered structure adapts to the construction characteristics of the basement floor slab 1 and the side guide walls being poured in stages, avoiding concentrated leakage at construction joints caused by the subsequent installation of the steel frame columns 2.

[0047] In one alternative implementation, the continuous waterproofing component includes:

[0048] A continuous water-stop steel plate 8 is installed within the basement side wall 3 and retaining wall 5, vertically penetrating the first construction joint 6. The thickness and width of the continuous water-stop steel plate 8 can be 3mm x 300mm. The water-stop steel plate within the basement side wall 3 can be welded to the water-stop steel plate within the retaining wall 5 to form the continuous water-stop steel plate 8. The width and thickness of the continuous water-stop steel plate 8 are determined according to design requirements. Standardized water-stop steel plates can be used at the corners of the retaining wall 5 and the basement side wall 3.

[0049] In this application, the vertically penetrating continuous waterstop steel plate 8 eliminates the break point of the traditional horizontal waterstop steel plate at the steel frame column 2, achieving full-circumference sealing of the construction joint. The continuous waterstop steel plate 8 is anchored inside the concrete, forming a rigid waterproof skeleton to resist deformation caused by groundwater pressure. The tight bond between the continuous waterstop steel plate 8 and the concrete inhibits crack propagation, making it particularly suitable for stress concentration areas where the basement sidewall 3 intersects with the steel frame column 2. Furthermore, the continuous waterstop steel plate 8 continuously covers the retaining wall 5 and the basement sidewall 3, forming a unified waterproof layer system and solving the problem of waterproof layer tearing caused by structural misalignment.

[0050] In one optional embodiment, the continuous waterproofing component further includes:

[0051] A waterstop 9 is installed at the first construction joint 6, located on the outer end of the continuous waterstop steel plate 8 facing the basement. The waterstop 9 can be a water-swellable waterstop 9, which is tightly bonded to the concrete structure.

[0052] In this application, the waterstop 9 and the continuous waterstop steel plate 8 work together to form a waterproof system. The waterstop 9 is installed close to the outer side of the steel plate. After contact with water, it expands and fills the micro-gaps in the construction joint, compensating for the interface gaps that may be caused by concrete shrinkage in the continuous waterstop steel plate 8. Its position design takes full advantage of the high position of the first construction joint 6, prioritizing the activation of the expansion sealing function before water seepage contacts the steel plate. The waterstop 9 adapts to the deformation of the concrete structure, reducing the failure of the waterproof layer caused by temperature differences or settlement, and is especially suitable for the long-term pressure environment of the sidewalls of deep foundation pits.

[0053] In one alternative embodiment, the retaining wall 5 and the outer concrete 4 are cast integrally.

[0054] In this application, the integral casting process eliminates the construction cold joint between the retaining wall 5 and the outer concrete 4, avoiding the problem of weak interface bonding caused by secondary casting. The overall structure enhances the stiffness uniformity of the steel frame column 2 area, reducing stress concentration cracks caused by stiffness differences.

[0055] In one alternative embodiment, a waterproof coating and a waterproof membrane 10 are applied to the outer side of the concrete cladding 4 facing the outside of the basement. The width and thickness of the waterproof membrane 10 are determined according to design requirements.

[0056] In this application, a waterproof coating and a waterproof membrane 10 are compositely applied to the outer surface of the concrete cladding 4, forming a multi-layered active protection. The waterproof coating fills the capillary pores of the concrete cladding 4, while the waterproof membrane 10 acts as a continuous waterproof membrane to block external water pressure; the two complement each other to enhance impermeability. This provides additional protection for the exposed surface of the concrete cladding 4 of the steel frame column 2, offsetting the long-term damage to the concrete from groundwater erosion and soil chemicals.

[0057] In one alternative embodiment, a waterproof membrane 10 is provided on the lower end side of the base plate 1 and on the side facing the outside of the basement.

[0058] In one alternative implementation, such as Figure 2 As shown, the joint between the waterproof membrane 10 of the outer concrete 4 and the waterproof membrane 10 of the base plate 1 is filled with waterproof sealant 11.

[0059] In this application, a flexible sealant is used to fill the overlap between the base slab 1 and the outer concrete cladding 4, accommodating deformation caused by structural differential settlement. The sealant fills the pores of the membrane joints, forming an elastic transition zone to prevent tearing of the waterproofing layer due to displacement of the base slab 1 and the sidewalls. This achieves a seamless connection between the base slab 1 and the sidewall waterproofing system, constructing a closed waterproofing system. The chemical stability of the sealant ensures adhesion performance under long-term immersion conditions, preventing the overlap from becoming a weak point for leakage.

[0060] In one alternative embodiment, the thickness of the retaining wall 5 is the same as the thickness of the basement sidewall 3.

[0061] In this application, the uniform thickness design ensures that the retaining wall 5 and the sidewalls have matching stiffness, reducing stress concentration and crack formation caused by abrupt changes in thickness. Consistent thickness facilitates the standardization and reuse of the formwork system, improving construction efficiency and reducing error rates.

[0062] When the basement is below the groundwater level, leakage is likely to occur at the construction joint. It is necessary to ensure that the construction joint between the steel frame column 2 and the concrete sidewall can effectively prevent the infiltration of groundwater. The construction process of the water-stopping technology should be as simple and easy to operate as possible to improve construction efficiency and reduce construction costs. It is necessary to consider whether the construction of the water-stopping technology will interfere with the construction of other basement structures, such as rebar tying and concrete pouring.

[0063] This application improves the structural durability by adding a retaining wall 5 at the steel frame column 2 of the basement side wall 3, installing a continuous water-stop steel plate 8 at the construction joint of the basement side wall 3, and attaching a water-stop strip 9. Compared with the prior art, this application effectively prevents leakage at the construction joint and improves the waterproof performance of the basement; it is simple to construct, low in cost, and has good durability; it can be adjusted and optimized according to different project requirements.

[0064] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A water-stopping structure for construction joints at steel frame columns on the side walls of basements, characterized in that, include: The base plate (1) is connected to a steel frame column (2) and a basement side wall (3) on top. The steel frame column (2) is provided with an outer concrete (4), and the basement side wall (3) is provided on both sides of the outer concrete (4). A retaining wall (5) is connected to one end of the outer concrete (4) facing the outside of the basement; The retaining wall (5) and the basement side wall (3) surround the three sides of the steel frame column (2), and the retaining wall (5) and the basement side wall (3) have continuous waterproof components.

2. The water-stopping structure for construction joints at steel frame columns on the basement sidewalls according to claim 1, characterized in that, There is a continuous first construction joint (6) between the retaining wall (5) and the base slab (1), and between the base slab (1) and the basement side wall (3), and there is a second construction joint (7) between the base slab (1) and the outer concrete (4), and the first construction joint (6) is higher than the second construction joint (7).

3. The water-stopping structure for construction joints at steel frame columns on the basement sidewalls according to claim 2, characterized in that, The continuous waterproofing component includes: A continuous water-stop steel plate (8) is installed in the basement side wall (3) and retaining wall (5), and the continuous water-stop steel plate (8) vertically penetrates the first construction joint (6).

4. The construction joint waterproofing structure at the steel frame column of the basement side wall according to claim 3, characterized in that, The continuous waterproofing assembly also includes: A waterstop (9) is installed at the first construction joint (6), and the waterstop (9) is located on the continuous waterstop steel plate (8) at one end facing the outside of the basement.

5. The water-stopping structure for construction joints at steel frame columns on the sidewalls of basements according to claim 1, characterized in that, The retaining wall (5) and the outer concrete (4) are cast as a single unit.

6. The water-stopping structure for construction joints at steel frame columns on the sidewalls of basements according to claim 1, characterized in that, Waterproof coating and waterproof membrane (10) are applied to the outer side of the concrete (4) facing the outside of the basement.

7. The water-stopping structure for construction joints at steel frame columns on the basement sidewalls according to claim 6, characterized in that, Waterproof membrane (10) is provided on the lower end side of the base plate (1) and on the side facing the outside of the basement.

8. The construction joint waterproofing structure at the steel frame column of the basement side wall according to claim 7, characterized in that, The joint between the waterproof membrane (10) of the outer concrete (4) and the waterproof membrane (10) of the base plate (1) is filled with waterproof sealant (11).

9. The construction joint waterproofing structure at the steel frame column of the basement sidewall according to claim 1, characterized in that, The thickness of the retaining wall (5) is the same as the thickness of the basement side wall (3).

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