CN216238483U - Wall-shaped supporting structure - Google Patents
Wall-shaped supporting structure Download PDFInfo
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- CN216238483U CN216238483U CN202122625481.3U CN202122625481U CN216238483U CN 216238483 U CN216238483 U CN 216238483U CN 202122625481 U CN202122625481 U CN 202122625481U CN 216238483 U CN216238483 U CN 216238483U
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Abstract
The utility model relates to the technical field of underground construction, in particular to a wall-shaped supporting structure which comprises a plurality of circular groove sections and a plurality of rectangular groove sections, wherein the rectangular groove sections and the circular groove sections are arranged at intervals; the circular groove section adopts a steel casing as a retaining wall, the steel casing is used as a waterproof component of an underground wall-shaped structure after concrete pouring, and a rectangular baffle is arranged on the central axis of the rectangular groove section on the outer side of the steel casing of the circular groove section part to serve as a secondary waterproof structure of the rectangular groove section and the circular groove section; the rectangular groove section adopts a supporting mode of steel plates and steel pipe inner supports, the steel plates are used as waterproof components of an underground wall-shaped structure after concrete pouring is finished, and the rectangular groove section steel plates are welded with the circular groove section steel casing to serve as a closed outer waterproof structure. The wall-shaped supporting structure provided by the utility model solves the working condition that large machinery cannot enter, and ensures the safety and stability during construction.
Description
Technical Field
The utility model relates to the technical field of underground construction, in particular to a wall-shaped supporting structure.
Background
With the development of urban rail transit construction, deep foundation pit engineering is more and more, and the restriction on construction conditions is increased therewith. Underground continuous walls are the first choice for deep foundation pit enclosures with their unique advantages, but the terrain is complex in china when the supporting structures are located on mountains, sloping fields, low headroom limitations or near vibration sensitive cultural buildings. When large machines such as large trenching machines and cranes cannot enter or are not allowed to enter a construction site, an underground wall-shaped structure is required for calculation, and a 'permanent combination' underground structure form is realized. The open cut method deep foundation pit engineering is one of the deep foundation pit engineering with a large number, and when open cut method tunnel crossing construction is carried out under an urban viaduct in a central area of a city, clearance height becomes a constraint condition. The headroom of urban overhead in China varies from 4m to 10m, the height of common trenching equipment in the market is about 14m, large trenching machinery and hoisting equipment cannot work normally under the low headroom limit, and a traditional trenching underground continuous wall structure of machinery with good supporting rigidity is difficult to form. The underground wall-shaped structure of the permanent underground outer wall has reliable structural performance, can be used for both retaining soil and stopping water during construction and has become an important technical problem in the field of engineering construction.
Therefore, the underground wall structure of the permanent underground outer wall is reliable in structural performance, and can be used for both retaining soil and stopping water in the construction period and prolonging the service life; the problems of the construction method that the good performance of the underground continuous wall can be inherited, the construction method is simple and feasible, the soil-retaining and water-stopping functions are reliable, the construction method capable of adapting to the low-clearance condition and the like become important technical problems in the special construction field.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving the above-mentioned problems and to providing a wall-like supporting structure.
In order to achieve the purpose, the wall-shaped supporting structure comprises a plurality of circular groove sections and a plurality of rectangular groove sections, wherein the rectangular groove sections and the circular groove sections are arranged at intervals; the circular groove section adopts a steel casing as a retaining wall, the steel casing is used as a waterproof component of an underground wall-shaped structure after concrete pouring, and a rectangular baffle is arranged on the central axis of the rectangular groove section on the outer side of the steel casing of the circular groove section part to serve as a secondary waterproof structure of the rectangular groove section and the circular groove section; the rectangular groove section adopts a supporting mode of steel plates and steel pipe inner supports, the steel plates are used as waterproof components of an underground wall-shaped structure after concrete pouring is finished, and the rectangular groove section steel plates are welded with the circular groove section steel casing to serve as a closed outer waterproof structure.
Preferably, the steel casing is prefabricated in sections, and the steel casing is welded in a full-welding mode around the horizontal direction in the vertical direction.
Preferably: the rectangular groove section steel plates and the inner supports are prefabricated on the ground, the inner supports are arranged among the steel plates, are aligned in the vertical direction and are arranged at equal intervals horizontally.
Preferably: the rectangular groove section is internally provided with a reinforcement cage, the reinforcement cage is installed in an artificial underground binding mode, and the reinforcement cage is welded with the circular steel casing in the horizontal direction.
Preferably: the circular groove section is internally provided with a reinforcement cage which is installed in a sectional prefabricating mode.
Preferably: the reinforcement cage is welded at the opening of the hole; the steel protective cylinder is in full-welding connection at the opening; and the steel plate supports at the opening for welding operation.
The wall-shaped supporting structure provided by the utility model has the advantages that:
1. the method can be suitable for the working condition that large machinery cannot be used under the condition of low headroom and an underground wall-shaped structure must be formed, and the supporting rigidity of the enclosure structure is ensured;
2. the manual bottom cleaning effect is visible and controllable, and the reliable bearing capacity of the underground wall-shaped structure is ensured;
3. the welding construction method of the round steel casing with the rectangular baffle and the rectangular steel plate is continuous and closed, the steel casing is reliably connected with the horizontal steel bars of the rectangular groove section, and the waterproof capacity of the underground wall-shaped structure is improved;
4. the construction is carried out step by step, circular construction is carried out firstly, then rectangular construction is carried out, and the rectangular groove section excavation is wall excavation under the protection of arch effect formed after the circular groove section is poured, so that the safety and the stability during construction are ensured;
5. the steel reinforcement cage is prefabricated on the ground by adopting a plurality of sections of steel reinforcement cages, steel casing barrels, steel plates and other structures, is manufactured in sections, has small weight and is beneficial to flexible manual and small-sized mechanical construction;
6. the guide wall and the traditional ground connecting wall are not needed to prepare the slurry on site, so that the environmental pollution is reduced;
7. the steel casing, the steel plate support and the round steel reinforcement cage are prefabricated in sections, so that the construction efficiency is improved, and the construction period is shortened;
8. the working condition that large machinery on mountainous regions, slopes and the like cannot enter a construction site;
9. the steel casing and the steel plate are welded to increase the waterproof capacity of the diaphragm wall;
10. the safety and the stability during construction are ensured by adopting a step-by-step construction method;
11. the cost of a construction system is reduced by adopting the matching of structures such as a plurality of sections of steel casing barrels, steel plates and the like; the section manufacturing is realized, the weight is small, and the small-sized mechanical hoisting is facilitated;
12. the slurry does not need to be prepared on site, so that the environmental pollution is reduced;
13. the steel casing and the steel plate support can be prefabricated in sections, so that the construction speed is accelerated, and the construction period is shortened;
14. the steel casing and the steel plate are used as waterproof parts of the wall-shaped supporting structure, a reinforcement cage is not needed as a framework, the use amount of steel is reduced, and the manufacturing cost is saved;
15. the cement soil body after the post-grouting becomes a protective layer of the steel plate in the service life, and can be used for the 'permanent temporary combination' underground structure.
Drawings
FIG. 1 is a top view of a basement wall structure according to the present invention;
FIG. 2 is a front view of a wall-like structure according to the present invention;
FIG. 3 is an oblique view of a rectangular trough section according to the present invention;
FIG. 4 is a schematic view of a reinforcement bar according to the present invention;
FIG. 5 is a schematic view of a steel casing according to the present invention welded to a steel plate and a steel bar;
FIG. 6 is a top view of a subterranean wall-like structure according to the present invention;
FIG. 7 is a side view of a subterranean wall-like structure according to the present invention;
FIG. 8 is a front view of a subterranean wall-like structure according to the present invention;
FIG. 9 is a schematic view of a weld joint between a steel casing and a steel plate according to the present invention;
fig. 10 is a schematic view of a grouting pipe according to the present invention.
In the figure: 1. the concrete grouting structure comprises a water stop baffle, 2. a steel pipe support, 3. a steel plate, 4. a steel casing, 5. a rectangular steel reinforcement cage, 6. a vertical through long welding seam of the steel casing and the steel plate, 7. a circular steel reinforcement cage, 8. a horizontal welding seam of the steel casing, 9. a horizontal welding seam of the steel plate, 10. a grouting flower hole, 11. a seamless steel pipe, 12. a wall rear soil body and 13. a grouting pipe.
Detailed Description
The technical solution adopted by the present invention is further described below with reference to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 by the accompanying drawings and embodiments, which are a preferred embodiment of the present invention, and in this embodiment, a wall-shaped supporting structure includes: circular groove section and rectangular groove section. The rectangular groove section and the circular groove section are arranged at intervals. The length of the rectangular groove section is recommended to be around 4 m. The diameter of the circular groove section is recommended to be not less than 1.2m, and the width of the rectangular groove section is recommended to be not less than 1 m. The circular groove section is mainly excavated by manpower, and the steel casing 4 is used as a protective wall; the steel casing 4 is used as a waterproof component of the underground wall-shaped structure after concrete pouring is finished. The steel casing 4 of the circular groove section part is provided with a water stop baffle 1 which is 15cm wide and 1cm thick and has the full length on the central axis of the outer rectangular groove section, and the water stop baffle is used as a secondary waterproof structure of the rectangular groove section and the circular groove section. The steel protects a section of thick bamboo 4 and adopts the segmentation prefabrication, and the high suggestion of a single section steel protects a section of thick bamboo 4 height about 2 meters to be less than the headroom height of assigned position. The steel casing 4 is vertically welded by full welding around the horizontal direction. The rectangular groove section adopts a supporting mode of a 15 mm-thick Q235 steel plate 3 and a diameter DN65 steel pipe inner support 2, and the steel plate 3 is used as a waterproof component of an underground wall-shaped structure after concrete pouring is finished. The rectangular groove section steel plate is welded with the circular groove section part steel casing 4 to be used as a closed outer waterproof structure. The rectangular groove section steel plate and the inner support are prefabricated on the ground, and the height of the single-section steel plate 3 is recommended to be about 2 meters and is smaller than the clearance height of a specified position. The inner supports are arranged between the steel plates 3, vertically aligned and horizontally arranged at equal intervals. The horizontal spacing is recommended to be 1.5m and the vertical spacing is recommended to be 1.5 m. And drainage pumping facilities are needed to be adopted in the circular groove section and the rectangular groove section to control the underground water level to be 0.5m below the elevation of the artificial excavation surface. The rectangular groove section and the circular groove section adopt a manual excavation mode or suitable small soil taking equipment. The rectangular groove section steel reinforcement cage 5 is installed in an artificial underground binding mode, and is welded with the round steel casing 4 in the horizontal direction, so that the spatial position conflict between the inner support and the water stop belt of the steel casing 4 is avoided. The circular groove section steel reinforcement cage adopts the prefabricated mode installation of segmentation, and the steel reinforcement cage height of single section is less than the headroom height of assigned position. The diameter of the steel casing 4 is slightly smaller than the diameter of the manual hole digging, and the diameter of the reinforcement cage is smaller than the diameter of the steel casing by 50 mm. The rectangular reinforcement cage 5 is welded at the opening; the steel casing 4 is in full-welding connection at the hole; and the steel plate supports at the opening for welding operation.
Referring to fig. 6, 7, 8, 9 and 10, another preferred embodiment of the present invention is a wall-shaped supporting structure, in this embodiment, comprising: a circular groove section and a rectangular groove section; the rectangular groove section and the circular groove section are arranged at intervals; the length of the rectangular groove section is recommended to be about 4 m; the diameter of the circular groove section is larger than the width of the rectangular groove section; the diameter of the circular groove section is recommended to be larger than 1.2m, and the width of the rectangular groove section is recommended to be larger than 1 m; the circular groove section adopts a steel casing 4 as a protective wall; the steel casing 4 is used as a waterproof component of the underground wall-shaped structure after the concrete pouring is finished; the excavation size of the circular groove section is about 50mm larger than that of the steel casing 4; grouting pipes 13 with the diameter of 25mm and the wall thickness of 3mm are uniformly arranged outside the steel casing 4 at equal intervals, and the suggested interval is 300 mm; the steel casing 4 is provided with a rectangular baffle plate which is 150mm wide and 10mm thick and has vertical through length on the axis of the rectangular groove section at the outer side, and the rectangular baffle plate is used as a secondary waterproof structure of the rectangular groove section and the circular groove section; the steel casing is prefabricated in sections, and the height of a single section of steel casing is recommended to be about 3-5 m; the steel casing 4 is vertically welded on site; the rectangular groove section adopts a combined supporting steel pipe supporting 2 mode of a rectangular steel plate 3 and an inner support, and the steel plate 3 is used as a waterproof component of an underground wall-shaped structure after concrete pouring is finished; a gap of about 50mm is reserved on the outer side of the steel plate at two sides of the rectangular groove section, and compaction grouting pipes 13 with flower holes are arranged at equal intervals (300 mm); the vertical through-length of the intersection of the steel plate 3 and the steel casing 4 is welded on site to serve as an outer-layer waterproof structure; the steel plate 3 and the inner support are prefabricated on the ground, and the height of the single-section steel plate 3 is about five meters; the inner supports are arranged between the steel plates 3 in longitudinal alignment and horizontally equidistant. The horizontal spacing is recommended to be 1.5m, and the vertical spacing is recommended to be 1.5 m; in the circular groove section and the rectangular groove section, a drainage pumping facility is adopted to control the underground water level to be 0.5m below the elevation of an excavated soil body during construction; both the rectangular groove section and the circular groove section adopt a manual excavation or small-sized mechanical excavation mode; the diameter of the steel casing 4 is smaller than the diameter of the manual hole digging by 50mm, and the water stop baffle 1 can be inserted into soil; the steel protecting cylinder 4 is welded at the opening, and the steel plate support 2 is welded at the opening.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be within the technical scope of the present invention, and the technical solutions and novel concepts according to the present invention with the equivalent replacement or change should be covered within the scope of the present invention.
Claims (6)
1. A wall-like supporting structure is characterized by comprising
The rectangular groove sections and the circular groove sections are arranged at intervals;
the circular groove section adopts a steel casing as a retaining wall, the steel casing is used as a waterproof component of an underground wall-shaped structure after concrete pouring, and a rectangular baffle is arranged on the central axis of the rectangular groove section on the outer side of the steel casing of the circular groove section part to serve as a secondary waterproof structure of the rectangular groove section and the circular groove section;
the rectangular groove section adopts a supporting mode of steel plates and steel pipe inner supports, the steel plates are used as waterproof components of an underground wall-shaped structure after concrete pouring is finished, and the rectangular groove section steel plates are welded with the circular groove section steel casing to serve as a closed outer waterproof structure.
2. A wall-like supporting structure as claimed in claim 1 wherein said steel casing is prefabricated in sections and is welded in a horizontal circumferential full weld in a vertical direction.
3. A wall-like supporting structure as claimed in claim 1 wherein said rectangular channel section steel plates and said inner supports are prefabricated above ground, said inner supports being disposed between the steel plates in vertical alignment and horizontally equidistant.
4. A wall-like supporting structure as claimed in claim 1, wherein the rectangular channel section further includes a reinforcement cage, the reinforcement cage is installed by manual underground binding, and the reinforcement cage is welded to the circular steel casing in the horizontal direction.
5. A wall-like supporting structure as claimed in claim 1, wherein the circular channel section further includes a reinforcement cage, the reinforcement cage being installed in a segmental prefabrication manner.
6. A wall-like supporting structure as claimed in claim 4 or 5 wherein said reinforcement cage is welded at the opening; the steel protective cylinder is in full-welding connection at the opening; and the steel plate supports at the opening for welding operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122625481.3U CN216238483U (en) | 2021-10-29 | 2021-10-29 | Wall-shaped supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122625481.3U CN216238483U (en) | 2021-10-29 | 2021-10-29 | Wall-shaped supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216238483U true CN216238483U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122625481.3U Active CN216238483U (en) | 2021-10-29 | 2021-10-29 | Wall-shaped supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216238483U (en) |
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2021
- 2021-10-29 CN CN202122625481.3U patent/CN216238483U/en active Active
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