Waterproof structure of basement outer wall steel column and construction method thereof

Abstract

The application discloses a basement outer wall steel column water stop structure and a construction method thereof. The basement outer wall steel column water stop structure comprises a bottom pouring body, two sub-side walls formed by extending upwards from a bottom plate, a gap formed between the two sub-side walls, a water stop strip placing groove provided on the bottom plate at the gap, two water stop plates, vertical parts of the two water stop plates being respectively poured and fixed on the end parts of the two sub-side walls near the gap, the two ends of the water stop strip placing groove respectively extending to the two water stop plates, and a water stop strip placed in the water stop strip placing groove and having two ends expanded by water to tightly connect with the two water stop plates. Due to the softness of the water stop strip, the water stop strip can easily bypass the obstacles, so that the water stop strip does not need to be disconnected in the process of being placed into the water stop strip placing groove, and the water stop strip cooperates with the water stop plates to continuously stop water at the vertical construction joint and the horizontal construction joint at the gap, thereby improving the water stop effect.

Description

Technical Field

[0001] This invention relates to the field of water-stopping technology, specifically to a water-stopping structure for steel columns on the exterior wall of a basement and its construction method. Background Technology

[0002] In recent years, the government has promoted green and environmentally friendly practices and introduced favorable policies for the steel structure prefabricated building industry. Various regions are also actively exploring the development of prefabricated buildings. As prefabricated steel structure building technology matures, these buildings are widely used in offices, factories, warehouses, and large public facilities. Among these, rapidly constructed multi-story and high-rise public buildings using prefabricated steel structures are expected to become a future trend in architectural design.

[0003] Basement exterior walls in prefabricated steel structure buildings fall into two categories: those with steel columns and those without. For basement exterior walls without steel columns, they are constructed using column stirrups and concrete. For basement exterior walls with steel columns, the steel columns are typically installed after the base slab has been poured and reached its strength. Therefore, it is unavoidable to create notches in the initial pouring of the base slab to accommodate the steel columns, which contain numerous studs and stirrups.

[0004] For basement exterior walls with steel columns, there are many studs and stirrups in the steel columns. At the same time, the waterstop steel plate has a long cross section and high rigidity, making it inconvenient to make bends and connect or pass through small gaps. Therefore, the waterstop steel plate cannot extend laterally through the steel column. So, the waterstop steel plate needs to be cut at the position of the steel column. However, cutting the waterstop steel plate will inevitably lead to poor water-stopping effect.

[0005] Given the shortcomings of existing technologies, it is necessary to design a water-stopping structure for steel columns in the exterior walls of basements and its construction method. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is that the water-stopping design of the basement exterior wall with steel columns, which uses water-stopping steel plates that are disconnected at the steel columns, will inevitably lead to poor water-stopping effect. Therefore, the present invention provides a water-stopping structure for steel columns of basement exterior walls and its construction method.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0008] A water-stopping structure for steel columns in the exterior wall of a basement includes:

[0009] The bottom casting body includes a bottom plate and two sub-side walls extending upward from the bottom plate. A gap is formed between the two sub-side walls, and a waterstop strip placement groove is provided on the bottom plate at the gap.

[0010] Two waterstop plates, the inner sides of the vertical parts of the two waterstop plates are respectively cast and fixed in the end of the two sub-side walls near the notch, and the two ends of the waterstop strip mounting groove extend to the two waterstop plates respectively.

[0011] A waterstop strip is placed in the waterstop strip mounting groove, and both ends of the waterstop strip expand when exposed to water and are tightly connected to the two waterstop plates respectively.

[0012] Furthermore, the lower end of the waterstop plate is connected to the top surface of the bottom reinforcing mesh of the bottom cast-in-place body.

[0013] Furthermore, the two ends of the waterstop strip mounting groove extend to the grooves at the lower ends of the two waterstop plates, respectively.

[0014] Furthermore, the upper parts of both ends of the waterstop strip are in contact with the wall of the groove, and the lower parts of both ends of the waterstop strip are located within the waterstop strip placement groove.

[0015] Furthermore, it also includes a side wall casting body, which is cast on the bottom casting body. The side wall casting body includes a wall column steel mesh, and the wall column steel mesh is provided with an insertion space for steel columns to be inserted at the notch. The waterstop strip extends continuously in the steel bar gap at the bottom of the wall column steel mesh.

[0016] Furthermore, the wall column steel mesh has an insertion space at the notch for inserting the steel column, and the waterstop strip is located outside the steel column.

[0017] Furthermore, the outer wall of the side wall casting is flush with the outer wall of the bottom casting.

[0018] Furthermore, each of the waterstops is L-shaped, and each of the waterstops also includes a horizontal portion connected to the vertical portion, the inner side of which is also cast and fixed to the top of the corresponding sub-side wall.

[0019] Furthermore, the grooves of each of the aforementioned waterstop plates face the water-facing side.

[0020] Furthermore, in the thickness direction of the sub-side wall, the waterstop plate is cast and fixed to the middle of the sub-side wall.

[0021] The technical solution of this invention has the following advantages:

[0022] 1. The water-stopping structure for the steel columns of the basement exterior wall provided by this invention has a water-stopping strip placement groove on the bottom plate at the gap of the bottom cast-in-place body. The vertical parts of the two water-stopping plates are respectively cast and fixed in the ends of the two side walls near the gap. The two tail parts of the water-stopping strip placement groove extend to the two water-stopping plates respectively. The two ends of the water-stopping strip expand when exposed to water and tightly connect with the two water-stopping plates respectively. Due to the flexibility of the water-stopping strip itself, the water-stopping strip can easily bypass obstacles. Therefore, the water-stopping strip does not need to be broken during the process of placing the water-stopping strip into the water-stopping strip placement groove. Furthermore, the water-stopping strip, together with the water-stopping plates, can continuously stop water in vertical construction joints and horizontal construction joints at gaps, improving the water-stopping effect.

[0023] 2. The water-stop structure for the steel column of the basement exterior wall provided by the present invention has a water-stop strip placement groove that extends to the groove at the bottom of the water-stop plate, so that both ends of the water-stop strip can extend into the groove of the water-stop plate. After the water-stop strip expands when it comes into contact with water, it has a greater contact pressure and contact area with the water-stop plate, thereby improving the water-proof performance.

[0024] 3. The water-stop structure for the steel column of the basement exterior wall provided by the present invention has the upper part of both ends of the water-stop strip in contact with the wall of the corresponding groove, and the lower part of both ends located in the water-stop strip placement groove, which ensures the contact between the water-stop strip and the water-stop plate from the initial state, further ensuring the anti-seepage performance.

[0025] 4. The water-stop structure for the steel column of the basement exterior wall provided by the present invention has a water-stop strip located outside the steel column to facilitate bonding the water-stop strip to the water-stop strip placement groove. The water-stop strip is continuously installed through the steel reinforcement gap at the bottom of the wall column steel reinforcement mesh, rather than being placed outside the wall column steel reinforcement mesh. This is to allow the water-stop strip to have more concrete protection and to prevent the water-stop strip from breaking due to improper stress.

[0026] 5. The water-stopping structure for the steel column of the basement exterior wall provided by the present invention has an L-shaped water-stopping plate. The water-stopping plate also includes a horizontal part connected to the vertical part. The inner side of the horizontal part is also cast and fixed to the top of the sub-side wall. In this way, the horizontal construction joint corresponding to the top of the sub-side wall will also have a corresponding water-stopping structure, further improving the water-stopping effect of the basement exterior wall.

[0027] 6. The water-stopping structure of the steel column of the basement exterior wall provided by the present invention has the outer wall of the side wall casting body flush with the outer wall of the bottom casting body, which facilitates the installation of water-stopping membrane on the basement exterior wall.

[0028] A construction method for a water-stopping structure of a steel column in the exterior wall of a basement includes the following steps:

[0029] Tie and fix the bottom steel mesh, and fix the two waterstops to the two side walls of the bottom steel mesh respectively;

[0030] Concrete is poured into the bottom steel mesh to form a bottom casting body, which has a bottom plate and two sub-side walls located above the bottom plate. A notch suitable for inserting steel columns is formed between the two sub-side walls. The inner sides of the vertical parts of the two waterstops are respectively cast and fixed to the ends of the two sub-side walls near the notch. A waterstop strip placement groove is formed on the bottom plate, and the two tails of the waterstop strip placement groove extend to the grooves of the two waterstops respectively.

[0031] Place the waterstop strip into the waterstop strip placement groove, and make both ends of the waterstop strip extend into the grooves of the two waterstop plates respectively.

[0032] 1. The construction method for the water-stop structure of the steel column of the basement exterior wall provided by the present invention can continuously stop water in the horizontal construction joints at vertical construction joints and gaps, with excellent water-stopping effect.

[0033] 2. The construction method for the water-stop structure of the steel column of the basement exterior wall provided by the present invention uses water-stop plates and water-swellable water-stop strips to stop water. It is more convenient in terms of material procurement, easy to process and construct, saves construction time and costs. In addition, according to different needs, the water-stop strip installation groove can be set into any shape on site according to the actual situation. Correspondingly, the water-stop strip can also be set according to the shape of the water-stop strip installation groove to make a closed water-stop strip. It is applicable to all steel structure basement projects and has stronger adaptability. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a three-dimensional schematic diagram of the water-stopping structure of the basement exterior wall steel column before concrete is poured into the wall column steel mesh in this invention.

[0036] Figure 2 This is a three-dimensional exploded view of the water-stopping structure of the basement exterior wall steel column before concrete is poured into the wall column steel mesh in this invention.

[0037] Figure 3 This is a partial transverse cross-sectional schematic diagram of the basement involved in this invention;

[0038] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0039] Figure 5 This is a partial longitudinal cross-sectional schematic diagram of the water-stopping structure of the steel column of the basement exterior wall in this invention;

[0040] Figure 6 This is a perspective view of the waterstop strip in this invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Bottom casting; 11. Base plate; 12. Side wall; 2. Waterstop plate; 21. Horizontal part; 22. Vertical part; 23. Groove; 3. Side wall casting; 31. Wall and column steel mesh; 32. Steel column; 4. Waterstop strip; 41. Main body. Detailed Implementation

[0043] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical 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 invention based on the specific circumstances.

[0046] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] Example 1

[0048] like Figures 1 to 6As shown, this embodiment provides a water-stopping structure for a steel column of an exterior wall of a basement, including a bottom cast-in-place body 1, two water-stopping plates 2, a side wall cast-in-place body 3, and a water-stopping strip 4. In this embodiment, the water-stopping plate 2 is a water-stopping steel plate, and the water-stopping strip 4 is a water-swelling strip.

[0049] The bottom casting body 1 is formed by pouring concrete into the bottom reinforcing mesh. The formed bottom casting body 1 includes a base plate 11 and two sub-side walls 12 extending upwards from the base plate 11. The two sub-side walls 12 extend laterally along the same straight line, and the height of the sub-side walls 12 is not less than 30cm. In this embodiment, the basement exterior wall is a civil defense structure basement exterior wall; therefore, the strength requirements for the basement exterior wall are higher, and steel columns 32 need to be installed inside the basement exterior wall. The height of the sub-side wall 12 is 50cm. A notch suitable for inserting the steel column 32 is formed between the two sub-side walls 12. A waterstop strip placement groove (not shown) is provided on the base plate 11 at the notch. The waterstop strip placement groove can limit the waterstop strip 4 and prevent the waterstop strip 4 from shifting. In this embodiment, the waterstop strip placement groove includes a base and tails located at both ends of the base. The base is straight, and the tails are "¬". The shape of the laid waterstop strip 4 is adapted to the shape of the waterstop strip placement groove. That is, the laid waterstop strip 4 also includes a straight main body 41, and both ends of the waterstop strip 4 are correspondingly "¬". Of course, the waterstop strip placement groove can also be set into other shapes according to the actual situation. In addition, the two ends of the waterstop strip placement groove extend to the aforementioned waterstop plate 2. Preferably, the two ends of the waterstop strip placement groove extend to the grooves 23 at the lower ends of the two waterstop plates 2. Correspondingly, the two ends of the waterstop strip 4 also extend to the grooves 23 at the bottom of the two waterstop plates 2. The upper parts of both ends of the waterstop strip 4 are located in the grooves 23 of the waterstop plate 2. Specifically, they are all bonded to the walls of the corresponding grooves 23. The lower parts are all located in the waterstop strip placement groove. Specifically, the lower parts are all bonded to the waterstop strip placement groove.

[0050] Two waterstop plates 2 are cast and fixed to the two sub-side walls 12 respectively. For ease of explanation, the side of the waterstop plate 2 adjacent to the sub-side wall 12 is referred to as the inner side, and the side away from the sub-side wall 12 is referred to as the outer side. In this embodiment, the groove 23 of each waterstop plate 2 faces the water-facing side, that is, the direction in which water may seep in. Each waterstop plate 2 includes a connected horizontal part 21 and a vertical part 22. The inner side of the horizontal part 21 is cast and fixed to the top of the sub-side wall 12, and the outer side of the horizontal part 21 protrudes from the top of the sub-side wall 12. The inner side of the vertical part 22 is cast and fixed to the end of the sub-side wall 12, and the outer side of the vertical part 22 protrudes from the end of the sub-side wall 12. The portion of the waterstop plate 2 protruding from the sub-side wall 12 will be cast and fixed together with the side wall casting body 3. Considering that the waterstop plate 2 also needs to be connected to the side wall casting body 3, the depth of the horizontal part 21 or the vertical part 22 entering the sub-side wall 12 is approximately equal to the width of the waterstop plate 2 (e.g., ...). Figure 2As shown, arrows BB and CC represent half the width of the horizontal portion 21 and the vertical portion 22, respectively. Considering the stability of the connection between the waterstop 2 and the sub-side wall 12, the waterstop 2 cannot be too close to the inner or outer wall of the sub-side wall 12. The inner wall of the sub-side wall 12 is the side wall facing the interior space, and the outer wall is the side wall facing the exterior. If it is too close to the inner or outer wall, the connection strength between the waterstop 2 and the sub-side wall 12 will be affected. Therefore, in this embodiment, both the horizontal portion 21 and the vertical portion 22 of the waterstop 2 are located in the middle of the thickness direction of the sub-side wall 12, thus providing sufficient concrete fixation on both sides of the waterstop 2.

[0051] The side wall casting 3 includes a wall column reinforcement mesh 31 and steel columns 32. The wall column reinforcement mesh 31 has an insertion space corresponding to the aforementioned notch. In this embodiment, the steel column 32 is in the shape of a grid, except that it is broken at the four corners of the grid. The bottom of the steel column 32 is provided with a fixing plate, and the fixing plate has bolt holes corresponding to the bolt holes on the base plate 11. After the steel column 32 is inserted into the insertion space from top to bottom, the bolts pass through the bolt holes on the fixing plate and enter the bolt holes on the base plate 11 to fix the steel column 32 to the base plate 11.

[0052] It should be noted that the aforementioned water-stopping structure for the steel columns of the basement exterior wall is introduced as an example of water-stopping near a single steel column. In reality, the basement exterior wall of the same building may have multiple steel columns, and correspondingly, water-stopping structures for the steel columns of the basement exterior wall need to be set in multiple locations.

[0053] The construction process of the water-stop structure for the steel columns of the basement exterior wall in this embodiment is described below:

[0054] Tie and fix the bottom steel mesh, and fix the inner sides of the two waterstops 2 to the sub-side wall of the bottom steel mesh. The so-called sub-side wall is the part of the bottom steel mesh corresponding to the sub-side wall 12. The lower end of the waterstop 2 is connected to the top surface of the bottom steel mesh, and a core (which can be a wooden strip) is set on the bottom plate of the bottom steel mesh. The so-called bottom plate is the part of the bottom steel mesh corresponding to the bottom plate 11.

[0055] Concrete is injected into the bottom steel mesh to form the bottom casting body 1. The bottom casting body 1 includes a bottom plate 11 and two sub-side walls 12. A gap is formed between the two sub-side walls 12. The inner side of the horizontal part 21 and the inner side of the vertical part 22 of each waterstop plate 2 are respectively cast and fixed to the top and end of the corresponding sub-side wall 12. The core is removed so that a waterstop strip placement groove is formed on the bottom plate 11. The waterstop strip placement groove can limit the waterstop strip 4 and prevent it from shifting. The tail of the waterstop strip placement groove extends to the waterstop plate 2. Preferably, the tail of the waterstop strip placement groove extends to the groove 23 of the waterstop plate 2. In this embodiment, the waterstop strip placement groove is formed together with the bottom casting body 1, which is very convenient.

[0056] The wall column steel mesh 31 is tied and fixed above the side wall 12 and above the gap. The wall column steel mesh 31 at the gap has an insertion space. The steel column 32 is inserted into the insertion space from top to bottom and fixed to the base plate 11 with bolts.

[0057] The waterstop strip 4 is continuously passed through the steel reinforcement gap at the bottom of the wall column steel mesh 31 and bonded to the waterstop strip placement groove. The main body 41 of the waterstop strip 4 is located outside the steel column 32. The upper parts of both ends of the waterstop strip 4 are pasted on the wall of the groove 23 of the waterstop plate 2, and the lower parts are pasted in the waterstop strip placement groove.

[0058] Concrete is injected into the steel mesh 31 of the wall column to form the side wall casting body 3. The side wall casting body 3 is connected to the bottom casting body 1, and the side wall casting body 3 covers the sub-side wall 12, steel column 32, waterstop plate 2 and waterstop strip 4 downwards. In this embodiment, the outer wall of the side wall casting body 3 is flush with the outer wall of the bottom casting body 1 to facilitate the laying of waterstop membrane on the basement exterior wall and to improve the aesthetics of the exterior wall.

[0059] When water reaches the waterstop strip 4, the waterstop strip 4 will expand and deform by 2-3 times, thereby filling all regular or irregular surfaces, cavities and gaps at the construction joint. The two ends of the waterstop strip 4 will be tightly connected to the lower end of the waterstop plate 2. As the waterstop strip 4 expands, it will generate huge contact pressure on all parts connected to it, thus completely preventing leakage.

[0060] In this embodiment, the small cross-section and flexibility of the waterstop strip 4 allow it to freely pass through the gaps in the reinforcing bars at the bottom of the small wall column reinforcing mesh 31, ensuring its continuity and ease of installation. The waterstop strip 4 can easily bypass the reinforcing bar obstacles at the bottom of the wall column reinforcing mesh 31 and adhere to the waterstop strip placement groove without needing to be broken. In this way, the vertical construction joints and horizontal construction joints at the ends of the sub-side wall 12 corresponding to the vertical construction joints and gaps can achieve continuous water sealing through the cooperation of the waterstop plate 2 and the waterstop strip 4, improving the water sealing effect. In addition, the waterstop strip 4 also has the advantages of being inexpensive, having a simple construction process, and excellent corrosion resistance.

[0061] Of course, in this embodiment, the waterstop strip 4 can also be placed in the waterstop strip placement groove after the bottom casting body 1 is formed and before the wall column steel mesh 31 is installed. The reason for describing the waterstop strip 4 through the steel reinforcement gap at the bottom of the wall column steel mesh 31 to place the waterstop strip 4 into the waterstop strip placement groove is to demonstrate the advantages of using the waterstop strip 4 to stop water.

[0062] In addition, the following information should be added:

[0063] When the strength requirements for the basement exterior walls are high, such as in civil defense projects, steel columns 32 are installed inside the basement exterior walls. To ensure the overall flatness of the basement exterior walls for laying waterproof membrane and other structural layers, and also to ensure that the exterior-facing side of the steel column 32 is protected by concrete, the exterior-facing side of the steel column 32 is not flush with the exterior wall of the side wall 12; the steel column 32 is offset inward by a certain distance. Since the steel column 32 is located at the gap, the waterstop plate 2 cannot pass through the steel column 32. To achieve continuous water stoppage, a waterstop strip installation groove is set on the bottom plate 11 at the gap, and then the waterstop strip 4 is bonded in the waterstop strip installation groove. The waterstop strip 4 is placed in the waterstop strip installation groove, positioning it outside the steel column 32 and extending continuously into the steel reinforcement gap at the bottom of the wall column steel mesh 31. This serves two purposes: firstly, the waterstop strip 4 is confined by the installation groove; secondly, the wall column steel mesh 31 protects the waterstop strip 4, reducing the risk of breakage due to improper external forces. Furthermore, while ensuring the waterstop effect, the placement of the waterstop strip 4 also reduces the thickness of the bottom cast-in-place body 1 and the side wall cast-in-place body 3, thereby lowering construction costs. Additionally, the waterstop strip installation groove is formed simultaneously with the bottom cast-in-place body 1, which is very convenient.

[0064] Example 2

[0065] like Figures 1 to 6 As shown in the figure, this embodiment provides a construction method for a water-stopping structure of a steel column in the exterior wall of a basement, including the following steps:

[0066] The bottom steel mesh is fixed, which includes a bottom plate and two side walls. The inner sides of the two waterstops 2 are fixed to the two side walls respectively, and the lower ends of the two waterstops 2 are connected to the top surface of the bottom plate. A core (which can be a wooden strip) is set on the bottom plate of the bottom steel mesh.

[0067] Concrete is poured into the bottom steel mesh to form a bottom casting body 1, which has a bottom plate 11 and two sub-side walls 12 located above the bottom plate 11. A notch is formed between the two sub-side walls 12. The inner side of the horizontal part 21 of each waterstop 2 is poured and fixed to the top of the corresponding sub-side wall 12. The inner side of the vertical part 22 of each waterstop 2 is poured and fixed to the end of the corresponding sub-side wall 12. The core is removed to form a waterstop strip placement groove on the bottom plate 11. The two ends of the waterstop strip placement groove extend to the waterstop 2. Preferably, the two ends of the waterstop strip placement groove extend to the groove 23 at the bottom of the waterstop 2. The waterstop strip placement groove is formed together when the bottom casting body 1 is formed, which is very convenient.

[0068] The wall column steel mesh 31 is fixed, and a splicing space is reserved at the position corresponding to the notch on the wall column steel mesh 31;

[0069] Place the steel column 32 in the insertion space, and position the steel column 32 inside the waterstop strip mounting groove;

[0070] The waterstop strip 4 is pasted into the waterstop strip placement groove through the steel reinforcement gap at the bottom of the wall column steel reinforcement mesh 31, and both ends of the waterstop strip 4 extend into the groove 23 of the waterstop plate 2 respectively. Specifically, the upper parts of both ends of the waterstop strip 4 are bonded to the wall of the corresponding groove 23 of the waterstop plate 2, and the lower parts of both ends of the waterstop strip 4 are bonded to the corresponding waterstop strip placement groove.

[0071] Concrete is poured into the steel mesh 31 of the wall column to form the side wall casting 3, connecting the side wall casting 3 to the bottom casting 1, as follows. Figure 4 As shown, the side wall casting 3 covers the sub-side wall 12, waterstop 2, waterstop strip 4 and steel column 32 downwards.

[0072] The water-stop structure of the basement exterior wall steel column constructed using the method described in this embodiment can continuously stop water from entering the horizontal construction joints at vertical construction joints and gaps, resulting in a good water-stopping effect. In this embodiment, water-stopping plates 2 and water-swellable water-stopping strips 4 are used for water-stopping, which is more convenient in terms of material procurement, easier to process and construct, saves construction time and costs. In addition, the water-stopping strip placement groove can be set into any shape on site according to different needs and actual conditions. Correspondingly, the water-stopping strip 4 can also be set according to the shape of the water-stopping strip placement groove to make a closed water-stopping strip, which is applicable to all steel structure basement projects and has stronger adaptability.

[0073] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A water-stopping structure for steel columns on the exterior wall of a basement, characterized in that, include: The bottom casting body (1) includes a bottom plate (11) and two sub-side walls (12) extending upward from the bottom plate (11). A gap is formed between the two sub-side walls (12), and a waterstop strip placement groove is provided on the bottom plate (11) at the gap. Two waterstop plates (2), the inner sides of the vertical parts (22) of the two waterstop plates (2) are respectively cast and fixed on the two sub-side walls (12) near the ends of the gaps, and the two tails of the waterstop strip placement groove extend to the two waterstop plates (2). The waterstop strip (4) is placed in the waterstop strip placement groove, and the two ends of the waterstop strip (4) expand when exposed to water and are tightly connected to the two waterstop plates (2); The two ends of the waterstop strip mounting groove extend to the grooves (23) at the lower ends of the two waterstop plates (2); Each of the waterstops (2) is L-shaped, and each of the waterstops (2) also includes a horizontal part (21) connected to the vertical part (22). The inner side of the horizontal part (21) is also cast and fixed to the top of the corresponding sub-side wall (12). It also includes a side wall casting body (3), which is cast on the bottom casting body (1). The side wall casting body (3) includes a wall column steel mesh (31). The wall column steel mesh (31) has an insertion space at the notch for inserting a steel column (32). The waterstop strip (4) extends continuously in the steel bar gap at the bottom of the wall column steel mesh (31) and is located outside the steel column (32).

2. The water-stopping structure for the steel columns of the basement exterior wall according to claim 1, characterized in that, The lower end of the waterstop plate (2) is connected to the top surface of the bottom steel mesh of the bottom casting body (1).

3. The water-stopping structure for the steel columns of the basement exterior wall according to claim 2, characterized in that, The upper parts of both ends of the waterstop strip (4) are in contact with the wall of the corresponding groove (23), and the lower parts of both ends of the waterstop strip (4) are located in the waterstop strip placement groove.

4. The water-stopping structure for the steel columns of the basement exterior wall according to claim 1, characterized in that, The outer wall of the side wall casting (3) is flush with the outer wall of the bottom casting (1).

5. The water-stopping structure for the steel columns of the basement exterior wall according to claim 1 or 2, characterized in that, The grooves (23) of each of the waterstop plates (2) face the water-facing side.

6. The water-stopping structure for the steel columns of the basement exterior wall according to claim 1 or 2, characterized in that, In the thickness direction of the sub-side wall (12), the waterstop plate (2) is cast and fixed in the middle of the sub-side wall (12).

7. A construction method for a water-stopping structure for a basement exterior wall steel column as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Tie and fix the bottom steel mesh, and fix the two waterstops (2) to the two side walls of the bottom steel mesh respectively; Concrete is poured into the bottom steel mesh to form a bottom casting body (1), so that the bottom casting body (1) has a bottom plate (11) and two sub-side walls (12) located above the bottom plate (11), and a notch suitable for inserting a steel column (32) is formed between the two sub-side walls (12), the inner side of the vertical part (22) of the two waterstops (2) is respectively cast and fixed to the end of the two sub-side walls (12) near the notch, and a waterstop strip placement groove is formed on the bottom plate (11), and the two tail parts of the waterstop strip placement groove extend to the two waterstops (2) respectively; Place the waterstop strip (4) into the waterstop strip placement groove, and make both ends of the waterstop strip (4) extend into the grooves (23) of the two waterstop plates (2).

Images