CN222847330U - Combined prefabricated floor wall monomer - Google Patents
Combined prefabricated floor wall monomer Download PDFInfo
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- CN222847330U CN222847330U CN202421696523.XU CN202421696523U CN222847330U CN 222847330 U CN222847330 U CN 222847330U CN 202421696523 U CN202421696523 U CN 202421696523U CN 222847330 U CN222847330 U CN 222847330U
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Abstract
本实用新型公开了一种组合式预制地墙单体，旨在提供一种既能够满足围护结构抗弯强度要求，又能够有效改善预制钢筋砼墙插桩挤土和置换土量大，存在沉墙困难的问题的组合式预制地墙单体。它包括：上幅预制钢筋砼墙体；下幅型钢支腿，位于上幅预制钢筋砼墙体的下方并呈上下延伸分布；若干预埋螺栓组件，其预埋设在上幅预制钢筋砼墙体的下端，下幅型钢支腿的上端通过预埋螺栓组件可拆卸的连接在上幅预制钢筋砼墙体的下端上。
The utility model discloses a combined prefabricated ground wall monomer, which aims to provide a combined prefabricated ground wall monomer that can meet the bending strength requirements of the enclosure structure and can effectively improve the problem that the prefabricated reinforced concrete wall has a large amount of soil displacement and difficulty in sinking the wall due to pile insertion. It includes: an upper prefabricated reinforced concrete wall; a lower section steel leg, which is located below the upper prefabricated reinforced concrete wall and extends up and down; a plurality of embedded bolt assemblies, which are embedded in the lower end of the upper prefabricated reinforced concrete wall, and the upper end of the lower section steel leg is detachably connected to the lower end of the upper prefabricated reinforced concrete wall through the embedded bolt assembly.
Description
Technical Field
The utility model relates to an underground diaphragm wall, in particular to a combined prefabricated diaphragm wall monomer.
Background
The underground diaphragm wall is widely applied to foundation pit support engineering due to the advantages of high integral rigidity, good water stopping effect and the like. The underground diaphragm wall is divided into a cast-in-situ underground diaphragm wall and a prefabricated underground diaphragm wall, wherein the cast-in-situ underground diaphragm wall has the problems of long construction time, influence of factors such as underwater concrete pouring and the like, easiness in controlling underwater concrete mud clamping, wall breaking and the like;
The prefabricated underground continuous wall technology can better solve the problems, and has the advantages of high strength, factory production, high construction efficiency, saving construction site, environmental protection and the like, but the existing prefabricated underground continuous wall is generally formed by a prefabricated reinforced concrete wall body, has the following defects that the pile insertion, soil extrusion and soil replacement are large, the wall sinking is difficult, the construction disturbance is increased, and the slurry concentration is often required to be diluted so as to influence the wall protection effect.
Disclosure of utility model
The utility model aims to provide a combined prefabricated ground wall monomer which not only can meet the bending strength requirement of an enclosure structure, but also can effectively solve the problems of large pile insertion and soil compaction and soil replacement amount of a prefabricated reinforced concrete wall and difficult sinking of the wall.
The technical scheme of the utility model is as follows:
A modular prefabricated flooring unit comprising:
Upper prefabricated reinforced concrete wall;
the lower-width steel support legs are positioned below the upper-width precast reinforced concrete wall body and are distributed in an extending way;
The embedded bolt assemblies are embedded in the lower ends of the upper prefabricated reinforced concrete walls, and the upper ends of the lower profile steel supporting legs are detachably connected to the lower ends of the upper prefabricated reinforced concrete walls through the embedded bolt assemblies. The combined prefabricated ground wall monomer has the characteristics of high requirement on the bending strength of the upper part and small stress on the lower part of the underground enclosure structure, the upper wall body is set to be an upper prefabricated reinforced concrete wall body so as to meet the requirement on the bending strength of the enclosure structure, and the lower wall body is set to be a lower section steel support leg made of section steel, so that the rigidity of the lower section steel support leg can meet the requirement on one hand, and the cross section area of the lower section steel support leg made of section steel is small, and the pile inserting, soil squeezing and soil replacement amount of the lower section steel support leg made of section steel are small, so that the problems of large pile inserting, soil squeezing and soil replacement amount of the prefabricated reinforced concrete wall can be effectively improved, and wall sinking is difficult. Meanwhile, the problem that the wall protection effect is affected due to the fact that the slurry concentration is required to be diluted for smooth pile insertion can be effectively solved, and the micro disturbance construction is facilitated.
Preferably, the embedded bolt assembly comprises:
The embedded bars are embedded and arranged in the lower end of the upper prefabricated reinforced concrete wall body;
The embedded sleeve is embedded in the lower end of the upper prefabricated reinforced concrete wall body, the embedded steel bars and the embedded sleeve are connected into a whole, a connecting screw hole with a downward opening is arranged on the embedded sleeve, and the lower port of the connecting screw hole is communicated with the lower end face of the upper prefabricated reinforced concrete wall body;
And the connecting bolt is connected with the connecting screw hole. Therefore, the lower-width steel support leg and the upper-width precast reinforced concrete wall body can be conveniently connected into a whole through the embedded bolt assembly.
Preferably, the inner hole of the embedded sleeve is a threaded hole, and the threaded hole forms the connecting threaded hole. Thus, the actual processing and manufacturing of the embedded sleeve are convenient.
Preferably, the embedded bars extend up and down, the lower ports of the right embedded sleeves at the lower ends of the embedded bars extend into the embedded sleeves, and the embedded bars are connected with the embedded sleeves through threads and/or welding. Thus, the connection of the embedded bars and the embedded sleeves is convenient, and the connection stability of the embedded bars and the embedded sleeves is ensured.
Preferably, the embedded bolt assembly comprises an embedded screw and a connecting nut matched with the embedded screw, the embedded screw is embedded in the lower end of the upper prefabricated reinforced concrete wall, and the connecting nut is positioned below the upper prefabricated reinforced concrete wall. Therefore, the lower-width steel support leg and the upper-width precast reinforced concrete wall body can be conveniently connected into a whole through the embedded bolt assembly.
Preferably, the upper end of the lower section steel supporting leg is provided with a connecting end plate, the connecting end plate is provided with a plurality of connecting through holes corresponding to the embedded bolt assemblies one by one, and the embedded bolt assemblies connect the lower section steel supporting leg with the upper prefabricated reinforced concrete wall body into a whole through the corresponding connecting through holes. Therefore, the lower-width steel support leg and the upper-width precast reinforced concrete wall body can be conveniently connected into a whole through the embedded bolt assembly.
Preferably, the connecting end plate is welded with the lower section steel supporting leg. Therefore, the connection manufacture of the connection end plate and the lower section steel supporting leg is facilitated, and the connection strength and stability of the connection end plate and the lower section steel supporting leg are guaranteed.
Preferably, each embedded bolt assembly is distributed in two rows, and each row of embedded bolt assemblies at least comprises two embedded bolt assemblies. Therefore, the connection reliability of the lower-frame steel support leg and the upper-frame prefabricated reinforced concrete wall body can be ensured.
Preferably, the lower section steel leg is made of H-section steel. The pile-inserting soil-squeezing and soil-replacing amount of the H-shaped steel is small, and the problems that the pile-inserting soil-squeezing and soil-replacing amount of the prefabricated reinforced concrete wall is large and the sinking of the wall is difficult can be effectively solved.
Preferably, the cross section of the upper prefabricated reinforced concrete wall body is I-shaped.
The utility model has the beneficial effects of meeting the bending strength requirement of the enclosure structure, and effectively improving the problems of large pile insertion and soil compaction and soil replacement amount of the prefabricated reinforced concrete wall and difficult sinking of the wall.
Drawings
FIG. 1 is a schematic view of one embodiment of a modular prefabricated wall unit according to the present utility model.
FIG. 2 is a schematic cross-sectional view of the section A-A of FIG. 1 (in which the lower section leg is formed of an H-section).
FIG. 3 is a schematic view of another cross-sectional structure at A-A in FIG. 1 (in which the lower section leg is made up of two H-sections).
In the figure:
the upper prefabricated reinforced concrete wall body 1;
A lower section steel supporting leg 2;
a connection end plate 3 connected to the via hole 3.1;
And the bolt assembly 4, the embedded steel bars 4.0, the embedded sleeve 4.1 and the connecting bolt 4.2 are embedded.
Detailed Description
In a first embodiment, as shown in fig. 1 and 2, a combined prefabricated ground wall monomer comprises an upper prefabricated reinforced concrete wall body 1, a lower steel support leg 2 and a plurality of embedded bolt assemblies 4.
The lower section steel supporting legs 2 are positioned below the upper prefabricated reinforced concrete wall body 1, and the lower section steel supporting legs 2 are distributed in an extending mode.
The embedded bolt assembly 4 is embedded and arranged at the lower end of the upper prefabricated reinforced concrete wall body 1. In this embodiment, the embedded bolt assembly 4 includes an embedded bar 4.0, an embedded sleeve 4.1 and a connecting bolt 4.2. The embedded steel bars 4.0 are embedded and arranged in the lower end of the upper prefabricated reinforced concrete wall body 1. The embedded bars 4.0 are vertically extended and distributed. The embedded sleeve 4.1 is embedded in the lower end of the upper precast reinforced concrete wall body 1. The lower end of the embedded bar 4.0 is connected with the embedded sleeve 4.1 into a whole. The embedded sleeve 4.1 is provided with a connecting screw hole with a downward opening. The lower port of the connecting screw hole is communicated with the lower end face of the upper precast reinforced concrete wall body 1. The connecting bolt 4.2 is connected with the connecting screw hole.
The upper end of the lower section steel supporting leg 2 is detachably connected to the lower end of the upper precast reinforced concrete wall body 1 through an embedded bolt assembly 4, specifically, the upper end of the lower section steel supporting leg 2 is provided with a connecting end plate 3, the connecting end plate 3 is provided with a plurality of connecting through holes 3.1 corresponding to the embedded bolt assemblies 4 one by one, the embedded bolt assemblies 4 are used for connecting the lower section steel supporting leg 2 and the upper precast reinforced concrete wall body 1 into a whole through the corresponding connecting through holes 3.1, namely, the connecting bolts 4.2 penetrate through the corresponding connecting through holes 3.1 to be connected with connecting screw holes through threads, and the connecting bolts 4.2 are locked, so that the upper end of the lower section steel supporting leg 2 is fixed on the lower end face of the upper precast reinforced concrete wall body 1. Therefore, the lower-width steel support leg 2 and the upper-width precast reinforced concrete wall body 1 can be conveniently and reliably connected into a whole through the embedded bolt assembly 4.
The combined prefabricated ground wall monomer of the embodiment aims at the characteristics that the requirement on the bending strength of the upper part of an underground enclosure structure is high and the stress on the lower part is small, the upper wall body is set to be an upper-width prefabricated reinforced concrete wall body 1 so as to meet the requirement on the bending strength of the enclosure structure, and the lower wall body is set to be a lower-width steel support leg 2 made of steel sections, so that the rigidity of the lower-width steel support leg 2 can meet the requirement on one hand, and on the other hand, the cross section area of the lower-width steel support leg 2 made of steel sections is small, the pile inserting and soil squeezing and soil replacing amount of the lower-width steel support leg 2 is small, and therefore the problems of large pile inserting and soil squeezing and soil replacing amount of the prefabricated reinforced concrete wall can be effectively improved, and wall sinking difficulty exists. Meanwhile, the problem that the wall protection effect is affected due to the fact that the slurry concentration is required to be diluted for smooth pile insertion can be effectively solved, and the micro disturbance construction is facilitated.
In addition, in the transportation process, the upper-frame precast reinforced concrete wall body 1 and the lower-frame steel support legs 2 can be disassembled so as to facilitate transportation. The upper end of the lower section steel supporting leg 2 is connected to the lower end of the upper prefabricated reinforced concrete wall body 1 through the embedded bolt assembly 4 before pile insertion. Because the lower part of the combined prefabricated ground wall monomer of the embodiment is formed by the lower section steel supporting legs 2, the lower section steel supporting legs 2 are lighter than the reinforced concrete wall in weight, thereby being convenient for integral hoisting and realizing quick construction.
In this embodiment, as shown in fig. 2, the lower section steel leg 2 is made of H-steel. The requirements of rigidity and bending strength of the lower-frame steel support leg 2 can be met, the pile inserting and soil squeezing and soil replacement amount of the H-shaped steel is small, and the problems that the pile inserting and soil squeezing and soil replacement amount of the prefabricated reinforced concrete wall is large and the sinking is difficult can be effectively solved. It should be noted that the lower section steel leg 2 may be made of an existing section steel such as i-steel, square steel, or round steel pipe.
In one embodiment of the present embodiment, as shown in fig. 2, the number of H-section steel constituting the lower section steel leg 2 is one.
In another implementation manner of this embodiment, as shown in fig. 3, two H-section steels forming the lower section steel leg 2 are distributed side by side, and the two H-section steels share one connecting end plate 3.
In this embodiment, as shown in fig. 2, the cross section of the upper prefabricated reinforced concrete wall body 1 is in an i shape. Of course, it should be noted that the cross section of the upper prefabricated reinforced concrete wall body 1 can also be rectangular or be provided with other special-shaped structures according to the requirement.
Further, each embedded bolt assembly 4 is distributed in two rows, and each row of embedded bolt assemblies 4 at least comprises two embedded bolt assemblies 4. In this way, the connection reliability of the lower-frame steel support leg 2 and the upper-frame precast reinforced concrete wall 1 can be ensured.
Further, the connecting end plate 3 is welded with the lower section steel supporting leg 2. Therefore, the connection end plate 3 and the lower section steel supporting leg 2 are convenient to manufacture, and the connection strength and stability of the connection end plate 3 and the lower section steel supporting leg 2 are guaranteed.
Further, the inner hole of the embedded sleeve 4.1 is a threaded hole, and the threaded hole forms the connecting threaded hole. Thus, the actual processing and manufacturing of the embedded sleeve 4.1 are facilitated.
In one implementation manner of this embodiment, the embedded bars 4.0 extend up and down, the lower port of the right embedded sleeve 4.1 at the lower end of the embedded bar 4.0 extends into the embedded sleeve 4.1, and the embedded bar 4.0 is connected with the inner hole of the embedded sleeve 4.1 through threads. So, be convenient for be connected of embedded bar 4.0 and embedded sleeve 4.1 to guarantee that embedded bar 4.0 is connected steadily with embedded sleeve 4.1.
In another implementation manner of this embodiment, the embedded bars 4.0 are distributed in an extending manner, the lower ports of the right embedded sleeves 4.1 at the lower ends of the embedded bars 4.0 extend into the embedded sleeves 4.1, and the embedded bars 4.0 are connected with the embedded sleeves 4.1 through welding. So, be convenient for be connected of embedded bar 4.0 and embedded sleeve 4.1 to guarantee that embedded bar 4.0 is connected steadily with embedded sleeve 4.1.
In the third implementation manner of this embodiment, the embedded bars 4.0 are distributed in an extending manner, the lower port of the right embedded sleeve 4.1 at the lower end of the embedded bar 4.0 extends into the embedded sleeve 4.1, the embedded bars 4.0 are connected with the inner hole of the embedded sleeve 4.1 through threads, and the embedded bars 4.0 are connected with the embedded sleeve 4.1 through welding. So, be convenient for be connected of embedded bar 4.0 and embedded sleeve 4.1 to guarantee that embedded bar 4.0 is connected steadily with embedded sleeve 4.1.
In a second embodiment, as shown in fig. 1 and 2, a combined prefabricated ground wall monomer comprises an upper prefabricated reinforced concrete wall body 1, a lower steel support leg 2 and a plurality of embedded bolt assemblies 4.
The lower section steel supporting legs 2 are positioned below the upper prefabricated reinforced concrete wall body 1, and the lower section steel supporting legs 2 are distributed in an extending mode.
The embedded bolt assembly 4 is embedded and arranged at the lower end of the upper prefabricated reinforced concrete wall body 1. In this embodiment, the embedded bolt assembly 4 includes an embedded screw and a connecting nut (not shown in the figure) that is matched with the embedded screw. The embedded screw is embedded in the lower end of the upper prefabricated reinforced concrete wall body 1, and the embedded screw extends up and down. The lower end of the embedded screw rod extends out to the lower part of the wide prefabricated reinforced concrete wall body, and the connecting nut is positioned below the wide prefabricated reinforced concrete wall body.
The upper end of the lower section steel supporting leg 2 is detachably connected to the lower end of the upper precast reinforced concrete wall body 1 through an embedded bolt assembly 4, specifically, the upper end of the lower section steel supporting leg 2 is provided with a connecting end plate 3, the connecting end plate 3 is provided with a plurality of connecting through holes 3.1 corresponding to the embedded bolt assemblies 4 one by one, the embedded bolt assemblies 4 connect the lower section steel supporting leg 2 and the upper precast reinforced concrete wall body 1 into a whole through the corresponding connecting through holes 3.1, namely, embedded screws penetrate through the corresponding connecting through holes 3.1, connecting nuts are matched with the embedded screws below the connecting end plate 3, and then the connecting nuts are locked, so that the upper end of the lower section steel supporting leg 2 is fixed on the lower end face of the upper precast reinforced concrete wall body 1. Therefore, the lower-width steel support leg 2 and the upper-width precast reinforced concrete wall body 1 can be conveniently and reliably connected into a whole through the embedded bolt assembly 4.
The combined prefabricated ground wall monomer of the embodiment aims at the characteristics that the requirement on the bending strength of the upper part of an underground enclosure structure is high and the stress on the lower part is small, the upper wall body is set to be an upper-width prefabricated reinforced concrete wall body 1 so as to meet the requirement on the bending strength of the enclosure structure, and the lower wall body is set to be a lower-width steel support leg 2 made of steel sections, so that the rigidity of the lower-width steel support leg 2 can meet the requirement on one hand, and on the other hand, the cross section area of the lower-width steel support leg 2 made of steel sections is small, the pile inserting and soil squeezing and soil replacing amount of the lower-width steel support leg 2 is small, and therefore the problems of large pile inserting and soil squeezing and soil replacing amount of the prefabricated reinforced concrete wall can be effectively improved, and wall sinking difficulty exists. Meanwhile, the problem that the wall protection effect is affected due to the fact that the slurry concentration is required to be diluted for smooth pile insertion can be effectively solved, and the micro disturbance construction is facilitated.
In addition, in the transportation process, the upper-frame precast reinforced concrete wall body 1 and the lower-frame steel support legs 2 can be disassembled so as to facilitate transportation. The upper end of the lower section steel supporting leg 2 is connected to the lower end of the upper prefabricated reinforced concrete wall body 1 through the embedded bolt assembly 4 before pile insertion. Because the lower part of the combined prefabricated ground wall monomer of the embodiment is formed by the lower section steel supporting legs 2, the lower section steel supporting legs 2 are lighter than the reinforced concrete wall in weight, thereby being convenient for integral hoisting and realizing quick construction.
In this embodiment, as shown in fig. 2, the lower section steel leg 2 is made of H-steel. The requirements of rigidity and bending strength of the lower-frame steel support leg 2 can be met, the pile inserting and soil squeezing and soil replacement amount of the H-shaped steel is small, and the problems that the pile inserting and soil squeezing and soil replacement amount of the prefabricated reinforced concrete wall is large and the sinking is difficult can be effectively solved. It should be noted that the lower section steel leg 2 may be made of an existing section steel such as i-steel, square steel, or round steel pipe.
In one embodiment of the present embodiment, as shown in fig. 2, the number of H-section steel constituting the lower section steel leg 2 is one.
In another implementation manner of this embodiment, as shown in fig. 3, two H-section steels forming the lower section steel leg 2 are distributed side by side, and the two H-section steels share one connecting end plate 3.
In this embodiment, as shown in fig. 2, the cross section of the upper prefabricated reinforced concrete wall body 1 is in an i shape. Of course, it should be noted that the cross section of the upper prefabricated reinforced concrete wall body 1 can also be rectangular or be provided with other special-shaped structures according to the requirement.
Further, each embedded bolt assembly 4 is distributed in two rows, and each row of embedded bolt assemblies 4 at least comprises two embedded bolt assemblies 4. In this way, the connection reliability of the lower-frame steel support leg 2 and the upper-frame precast reinforced concrete wall 1 can be ensured.
Further, the connecting end plate 3 is welded with the lower section steel supporting leg 2. Therefore, the connection end plate 3 and the lower section steel supporting leg 2 are convenient to manufacture, and the connection strength and stability of the connection end plate 3 and the lower section steel supporting leg 2 are guaranteed.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, and any simple modification, variation and equivalent transformation of the above embodiment according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (10)
1. A modular prefabricated wall unit comprising:
Upper prefabricated reinforced concrete wall;
the lower-width steel support legs are positioned below the upper-width precast reinforced concrete wall body and are distributed in an extending way;
The embedded bolt assemblies are embedded in the lower ends of the upper prefabricated reinforced concrete walls, and the upper ends of the lower profile steel supporting legs are detachably connected to the lower ends of the upper prefabricated reinforced concrete walls through the embedded bolt assemblies.
2. The modular prefabricated wall unit of claim 1, wherein the pre-buried bolt assembly comprises:
The embedded bars are embedded and arranged in the lower end of the upper prefabricated reinforced concrete wall body;
The embedded sleeve is embedded in the lower end of the upper prefabricated reinforced concrete wall body, the embedded steel bars and the embedded sleeve are connected into a whole, a connecting screw hole with a downward opening is arranged on the embedded sleeve, and the lower port of the connecting screw hole is communicated with the lower end face of the upper prefabricated reinforced concrete wall body;
and the connecting bolt is connected with the connecting screw hole.
3. The prefabricated assembled floor monomer of claim 2, wherein the inner hole of the pre-buried sleeve is a threaded hole, and the threaded hole forms the connecting threaded hole.
4. A prefabricated assembled unit according to claim 2 or 3, wherein the embedded bars extend up and down, the lower ports of the right embedded sleeves at the lower ends of the embedded bars extend into the embedded sleeves, and the embedded bars are connected with the embedded sleeves by threads and/or welding.
5. The combined prefabricated ground wall unit according to claim 1, wherein the embedded bolt assembly comprises an embedded screw and a connecting nut matched with the embedded screw, the embedded screw is embedded in the lower end of the upper prefabricated reinforced concrete wall body, and the connecting nut is positioned below the upper prefabricated reinforced concrete wall body.
6. The combined prefabricated ground wall unit according to claim 1, 2, 3 or 5, wherein the upper ends of the lower section steel supporting legs are provided with connecting end plates, the connecting end plates are provided with a plurality of connecting through holes corresponding to the embedded bolt assemblies one by one, and the embedded bolt assemblies connect the lower section steel supporting legs with the upper section prefabricated reinforced concrete wall body into a whole through the corresponding connecting through holes.
7. The modular prefabricated wall unit of claim 6, wherein said connecting end plates are welded to the lower profile legs.
8. The modular prefabricated wall unit of claim 1, 2, 3 or 5, wherein each of the plurality of pre-buried bolt assemblies is arranged in two rows, each row of pre-buried bolt assemblies including at least two pre-buried bolt assemblies.
9. The modular prefabricated wall unit of claim 1 or 2 or 3 or 5, wherein the lower section steel leg is comprised of H-section steel.
10. The modular prefabricated ground wall unit according to claim 1 or 2 or 3 or 5, wherein said upper prefabricated reinforced concrete wall body has an i-shaped cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421696523.XU CN222847330U (en) | 2024-07-17 | 2024-07-17 | Combined prefabricated floor wall monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421696523.XU CN222847330U (en) | 2024-07-17 | 2024-07-17 | Combined prefabricated floor wall monomer |
Publications (1)
| Publication Number | Publication Date |
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| CN222847330U true CN222847330U (en) | 2025-05-09 |
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| CN202421696523.XU Active CN222847330U (en) | 2024-07-17 | 2024-07-17 | Combined prefabricated floor wall monomer |
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