CN219175261U - Water stop structure for through-wall construction of horizontal steel pipe support in foundation pit - Google Patents
Water stop structure for through-wall construction of horizontal steel pipe support in foundation pit Download PDFInfo
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- CN219175261U CN219175261U CN202223507713.6U CN202223507713U CN219175261U CN 219175261 U CN219175261 U CN 219175261U CN 202223507713 U CN202223507713 U CN 202223507713U CN 219175261 U CN219175261 U CN 219175261U
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Abstract
The utility model provides a water stop structure for through-wall construction of a horizontal steel pipe support in a foundation pit, which comprises the following components: the steel plate comprises a concrete ring beam, a head steel plate, a round steel pipe, an annular water stop steel plate, micro-expansion concrete and a round plugging steel plate; the H-shaped steel is canceled as an adapter for wall penetrating construction, a round steel pipe is adopted to directly penetrate through the outer wall of the basement, and an annular water stop steel plate, micro-expansion concrete and a round plugging steel plate are matched to form a water stop structure of the outer wall of the basement, so that the problem of water seepage when the round steel pipe directly penetrates through the outer wall of the basement is solved; meanwhile, the round steel pipe has high strength and good stability, can meet the stability requirement of the supporting compression bar under the working conditions of large span and large axial force, and is applicable to foundation pit engineering with wider fertilizer slot width and larger steel supporting and supporting axial force.
Description
Technical Field
The utility model relates to the technical field of geotechnical engineering design, in particular to a water stop structure for horizontal steel pipe support through-wall construction in a foundation pit.
Background
Since the 21 st century, global economy has been rapidly developed, and the progress of industrial and urban construction has been rapidly advanced, and the density of urban building groups, industrial building groups and the like has been rapidly increased. Under the background, various demanded building structures break through upwards and downwards in space continuously, and good conditions are also created for the development of foundation pit engineering technology matched with the continuous downwards-protruding breaking of building space. However, the increase in the size of underground construction and the acceleration of development period have put higher standard demands on deep foundation pit engineering.
At present, horizontal steel pipe support wall-penetrating construction in a foundation pit is often to weld a section of H-shaped steel at the end part of the steel pipe support, the conflict part of the outer wall and the steel pipe support is replaced by the H-shaped steel, one end of the H-shaped steel is connected with a ring beam, and the other end of the H-shaped steel is connected with the steel pipe support. Before the basement outer wall is constructed, welding a circle of water stop steel sheet at the intersection position of the outer side of the H-shaped steel and the outer wall, binding outer wall steel bars and pouring concrete, pouring the H-shaped steel and the outer wall together, and cutting off the H-shaped steel and the outer wall in the foundation pit after the basement is backfilled in the later stage. The traditional steel pipe support wall penetrating method solves the problem of steel support wall penetrating construction during foundation pit construction, namely, the method is only suitable for foundation pits with smaller supporting axial force and narrower fertilizer groove width. However, there are some foundation pit excavation borderlines far away from the outer wall line, and the fat groove width is wider, leads to H shaped steel conversion head span great, and steel support axial force is great, and H shaped steel's depression bar stability does not satisfy the calculation requirement, exists great security risk.
Aiming at the problem that the wall-penetrating construction method adopting H-shaped steel as a conversion head in the prior art is difficult to be suitable for foundation pit engineering with wider fertilizer groove width and larger steel support supporting axial force, a solution method is always sought by a person skilled in the art.
Disclosure of Invention
The utility model aims to provide a water stop structure for wall-penetrating construction of a horizontal steel pipe support in a foundation pit, which aims to solve the problems that the wall-penetrating construction method adopting H-shaped steel as a conversion head is not suitable for foundation pit engineering with wider fertilizer slot width and larger steel support supporting axial force.
In order to solve the technical problems, the utility model provides a water stop structure for through-wall construction of a horizontal steel pipe support in a foundation pit, the water stop structure for through-wall construction of the horizontal steel pipe support in the foundation pit comprises: the steel plate comprises a concrete ring beam, a head steel plate, a round steel pipe, an annular water stop steel plate, micro-expansion concrete and a round plugging steel plate; one end of the round steel pipe is welded with the end socket steel plate buried in the concrete ring beam to form a round steel pipe opposite support; the other end of the round steel pipe directly passes through the basement outer wall; the round sealing steel plate is welded on the inner side of the round steel pipe close to the inner side of the basement outer wall, and the annular water stopping steel plate is welded on the outer side of the round steel pipe at the junction position of the basement outer wall; micro-expansion concrete is poured in the cavity of the round steel pipe between the end socket steel plate and the round plugging steel plate.
Optionally, in the foundation pit inner horizontal steel pipe support through-wall construction water stop structure, the round plugging steel plate is welded on the inner side of the round steel pipe at a position 50mm away from the inner side of the basement outer wall.
Optionally, in the water stopping structure for the through-wall construction of the horizontal steel pipe support in the foundation pit, the end socket steel plate is a square end socket steel plate.
Optionally, in the foundation pit inner horizontal steel pipe support wall-penetrating construction water stop structure, the height of the annular water stop steel plate is 200mm.
Optionally, in the foundation pit inner horizontal steel pipe support wall-penetrating construction water stop structure, the thickness of the round plugging steel plate is 20mm.
Optionally, in the water stop structure for through-wall construction of the horizontal steel pipe support in the foundation pit, the area of the foundation pit is larger than or equal to 10000m 2 The digging depth of the foundation pit is larger than or equal to 5.0m.
In the water-stopping structure for the horizontal steel pipe support wall-penetrating construction in the foundation pit, H-shaped steel is canceled to serve as an adapter for wall-penetrating construction, a round steel pipe is adopted to directly penetrate the underground outdoor wall for construction, and an annular water-stopping steel plate, micro-expansion concrete and a round plugging steel plate are matched to form the water-stopping structure of the basement outer wall, so that the problem of water seepage when the round steel pipe directly penetrates the basement outer wall is solved; meanwhile, the round steel pipe has high strength and good stability, can meet the stability requirement of the supporting compression bar under the working conditions of large span and large axial force, and is applicable to foundation pit engineering with wider fertilizer slot width and larger steel supporting and supporting axial force.
Meanwhile, because the H-shaped steel is canceled as the adapter for wall-penetrating construction, the round steel pipe is adopted to directly penetrate the outer wall of the basement for construction, the secondary conversion construction flow of the round steel pipe and the H-shaped steel is not needed, the construction is more convenient, and the construction speed is effectively accelerated.
Drawings
The foregoing and other objects, features and advantages of the disclosure will be apparent from the following more particular descriptions of exemplary embodiments of the disclosure as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the disclosure.
FIG. 1 is a schematic view of a water stop structure for through-the-wall construction of a horizontal steel pipe support in a foundation pit in an embodiment of the utility model;
FIG. 2a is a schematic diagram of step S2 in the construction method of the water stop structure for through-wall construction of the horizontal steel pipe support in the foundation pit according to an embodiment of the present utility model;
FIG. 2b is a schematic diagram of step S3 in the construction method of the water stop structure for through-wall construction of the horizontal steel pipe support in the foundation pit according to an embodiment of the present utility model;
FIG. 2c is a schematic diagram of step S4 in the construction method of the water stop structure for through-wall construction of the horizontal steel pipe support in the foundation pit according to an embodiment of the present utility model;
fig. 2d is a schematic diagram of step S5 and step S6 in the construction method of the water stop structure for through-wall construction of the horizontal steel pipe support in the foundation pit according to an embodiment of the present utility model.
In the figure:
10-a water stop structure for through-wall construction of a horizontal steel pipe support in a foundation pit; 1-excavating a foundation pit edge line; 2-the outer boundary of the basement outer wall; 3-inner boundary of basement outer wall; 4-circular plugging steel plates; 5-annular water stop steel plates; 6-micro-expansive concrete; 7-a round steel pipe; 8-end socket steel plates; 9-concrete ring beams.
Detailed Description
The water stopping structure for the horizontal steel pipe support through-wall construction in the foundation pit provided by the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
Certain terms are used throughout the description and claims to refer to particular system components. As will be appreciated by those skilled in the art, different companies may refer to a component by different names. It is not intended herein to distinguish between components that differ in name but not function. In the description and claims, the terms "comprising" and "including" are used in an open-ended fashion, and thus should be interpreted to mean "including, but not limited to …".
As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus.
In addition, each embodiment of the following description has one or more features, respectively, which does not mean that the inventor must implement all features of any embodiment at the same time, or that only some or all of the features of different embodiments can be implemented separately. In other words, those skilled in the art can implement some or all of the features of any one embodiment or a combination of some or all of the features of multiple embodiments selectively, depending on the design specifications or implementation requirements, thereby increasing the flexibility of the implementation of the utility model where implemented as possible.
The present utility model will be further described with reference to the drawings for the purpose of making the objects and features of the present utility model more comprehensible, however, the present utility model can be embodied in various forms and should not be construed as limited to the embodiments set forth herein.
Before explaining the present utility model in detail, the main principle and idea of the present utility model will be explained here: the wall-penetrating construction method based on the existing adoption of H-shaped steel as a conversion head is difficult to be suitable for foundation pit engineering with wider fertilizer groove width and larger steel support supporting axial force. The inventor finds based on long-term study that the root cause is: the stability of the compression bar of the H-shaped steel cannot meet the requirement of the foundation pit with larger axial force and wider fertilizer groove width of the steel support. With this as the starting point, consider to replace H shaped steel with intensity higher, the stronger steel pipe of stability to promote the support depression bar stability of former H shaped steel position, thereby enlarge its use foundation ditch engineering scope. But creates new problems after replacement, namely: the problem of water seepage can appear when round steel pipe directly passes the basement outer wall, consequently can understand as: if the problem that water seepage occurs when the round steel pipe directly passes through the basement outer wall can be solved, the technical problem to be solved by the utility model is equivalent to that of the round steel pipe. The design core of the utility model is as follows: the structure of a section of the round steel pipe through-wall is designed and optimized, and the strength and water stopping performance of the section of the round steel pipe through-wall are effectively enhanced mainly through the structures such as the annular water stopping steel plate, the micro-expansion concrete and the round plugging steel plate.
Please refer to fig. 1, which is a schematic diagram of a water stop structure for through-wall construction of a horizontal steel pipe support in a foundation pit in an embodiment of the utility model. As shown in fig. 1, the water stop structure 10 for through-wall construction with horizontal steel pipe support in a foundation pit comprises: the concrete ring beam 9, the head steel plate 8, the round steel pipe 7, the annular water stop steel plate 5, the micro-expansion concrete 6 and the round plugging steel plate 4; one end of the round steel pipe 7 is welded with the end socket steel plate 8 buried in the concrete ring beam 9 to form a round steel pipe pair support; the other end of the round steel pipe 7 directly passes through the basement outer wall; the round plugging steel plate 4 is welded on the inner side of the round steel pipe 7 close to the inner side of the basement outer wall, and the annular water stop steel plate 5 is welded on the outer side of the round steel pipe 7 at the junction position of the basement outer wall; and micro-expansion concrete 6 is poured in the cavity of the round steel pipe 7 between the seal head steel plate 8 and the round seal head steel plate 4.
Wherein the round plugging steel plate 4 is welded to the inner side of the round steel pipe 7 at a position 50mm outward from the inner side of the basement outer wall (i.e., an outward X position with respect to the inner side boundary 3 of the basement outer wall); the end socket steel plate 8 is a square end socket steel plate; the height h of the annular water stop steel plate 5 is 200mm; the thickness of the round plugging steel plate 4 is 20mm.
The foundation pit size and depth applicable to the design of the utility model are as follows: the area of the foundation pit is more than or equal to 10000m 2 The digging depth of the foundation pit is larger than or equal to 5.0m. Therefore, the H-shaped steel is canceled as the adapter for wall-penetrating construction, the round steel pipe is adopted to directly penetrate the underground outdoor wall for construction, the advantages of high strength and good stability of the round steel pipe are fully utilized, and therefore the stability requirement of the supporting compression bar under the working conditions of large span and large axial force is met, and the method is applicable to foundation pit engineering with wider fertilizer groove width and larger steel supporting axial force.
It will be appreciated that the above examples are only examples listed for better understanding of the technical solutions of the embodiments of the present application, and are not to be construed as the only limitation of the present embodiments.
Correspondingly, the embodiment also provides a construction method of the horizontal steel pipe support through-wall construction water stop structure in the foundation pit. The construction method of the horizontal steel pipe support through-wall construction water stop structure in the foundation pit according to the present embodiment is described in detail below with reference to fig. 1 and fig. 2a to 2 d.
Firstly, executing step S1, and calculating and confirming parameters of the required concrete ring beam 9 and the round steel pipe 7 according to geological survey data and the excavation depth and scale of the foundation pit;
next, referring to fig. 2a, step S2 is executed to excavate a foundation pit, construct a concrete ring beam 9 and a round steel pipe 7 according to the calculated and confirmed parameters, pre-embed a head steel plate 8 into the concrete ring beam 9, and then weld the round steel pipe 7 and the head steel plate 8 to form a round steel pipe pair;
next, referring to fig. 2b, step S3 is performed to weld an annular water stop steel plate 5 on the outer side of the round steel pipe 7 at the junction position with the basement outer wall;
next, referring to fig. 2c, step S4 is performed to construct a basement outer wall, and the basement outer wall and the round steel tube 7 are poured together;
next, referring to fig. 2d, step S5 is performed to cut out the round steel pipe 7 located inside the basement, and fill the micro-expansive concrete 6 into the remaining round steel pipe 7;
next, referring to fig. 2d, step S6 is performed to weld the round plugging steel plate 4 on the inner side of the round steel pipe 7 near the inner side of the basement outer wall (i.e. near the inner boundary 3 of the basement outer wall) so as to plug the round steel pipe 7. The mode of welding the inner sides of the round plugging steel plates 4 and the round steel pipes 7 is as follows: and (5) full-welding.
Specifically, as shown in fig. 1, the position of the excavation boundary line 1 of the foundation pit and the position of the outer wall of the basement are specifically known according to the outer boundary 2 of the outer wall of the basement and the inner boundary 3 of the outer wall of the basement, so that the specific setting positions of the annular water stop steel plate 5 and the circular plugging steel plate 4 in the steps S3 and S6 relative to the circular steel pipe 7 and the outer wall of the basement are further known. In this embodiment, the circular-shaped sealing steel plate 4 is welded to the inner side of the circular steel tube 7 at a position x=50 mm outward from the inner side boundary 3 of the basement outer wall; the height h of the annular water stop steel plate 5 is 200mm, the outer side of the round steel pipe 7 at the junction position with the basement outer wall is welded, and the annular water stop steel plate 5 is positioned at the outer side of the round steel pipe 7 penetrated in the middle position of the basement outer wall (in other words, the middle position is the position which is away from the inner side boundary 3 of the basement outer wall and is outward the thickness of the general basement outer wall).
For the method disclosed in the embodiment, the description is relatively simple because of corresponding to the structure disclosed in the embodiment, and the relevant points are only referred to the description of the structural parts.
The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (6)
1. The utility model provides a horizontal steel pipe supports wall construction stagnant water structure in foundation ditch which characterized in that includes: the steel plate comprises a concrete ring beam, a head steel plate, a round steel pipe, an annular water stop steel plate, micro-expansion concrete and a round plugging steel plate; one end of the round steel pipe is welded with the end socket steel plate buried in the concrete ring beam to form a round steel pipe opposite support; the other end of the round steel pipe directly passes through the basement outer wall; the round sealing steel plate is welded on the inner side of the round steel pipe close to the inner side of the basement outer wall, and the annular water stopping steel plate is welded on the outer side of the round steel pipe at the junction position of the basement outer wall; micro-expansion concrete is poured in the cavity of the round steel pipe between the end socket steel plate and the round plugging steel plate.
2. The water stop structure for through-the-wall construction of the horizontal steel pipe support in the foundation pit according to claim 1, wherein the round plugging steel plate is welded on the inner side of the round steel pipe at a position 50mm away from the inner side of the outer wall of the basement.
3. The foundation pit inner horizontal steel pipe support wall penetrating construction water stopping structure of claim 1, wherein the end socket steel plate is a square end socket steel plate.
4. The foundation pit inner horizontal steel pipe support through-wall construction water stop structure according to claim 1, wherein the height of the annular water stop steel plate is 200mm.
5. The foundation pit inner horizontal steel pipe support wall penetrating construction water stopping structure of claim 1, wherein the thickness of the round plugging steel plate is 20mm.
6. The water stop structure for through-wall construction of horizontal steel pipe support in foundation pit according to claim 1, wherein the area of the foundation pit is more than or equal to 10000m 2 The digging depth of the foundation pit is larger than or equal to 5.0m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223507713.6U CN219175261U (en) | 2022-12-27 | 2022-12-27 | Water stop structure for through-wall construction of horizontal steel pipe support in foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223507713.6U CN219175261U (en) | 2022-12-27 | 2022-12-27 | Water stop structure for through-wall construction of horizontal steel pipe support in foundation pit |
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| Publication Number | Publication Date |
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| CN219175261U true CN219175261U (en) | 2023-06-13 |
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| CN202223507713.6U Active CN219175261U (en) | 2022-12-27 | 2022-12-27 | Water stop structure for through-wall construction of horizontal steel pipe support in foundation pit |
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- 2022-12-27 CN CN202223507713.6U patent/CN219175261U/en active Active
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