CN215562640U - Prefabricated assembled retaining wall structure in foundation ditch top - Google Patents
Prefabricated assembled retaining wall structure in foundation ditch top Download PDFInfo
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- CN215562640U CN215562640U CN202023040280.9U CN202023040280U CN215562640U CN 215562640 U CN215562640 U CN 215562640U CN 202023040280 U CN202023040280 U CN 202023040280U CN 215562640 U CN215562640 U CN 215562640U
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Abstract
The utility model belongs to the technical field of foundation pit engineering, and particularly relates to a prefabricated retaining wall structure on the top of a foundation pit, which comprises a crown beam and a prefabricated retaining wall arranged on the crown beam, wherein a filling hole which penetrates through the prefabricated retaining wall along the vertical direction is reserved on the prefabricated retaining wall; reserved steel bars are reserved at the tops of the crown beams, the reserved steel bars partially extend out of the crown beams, and the parts of the reserved steel bars extending out of the crown beams are inserted into the pouring holes; a nut is arranged at the top end of the part of the reserved steel bar extending into the filling hole; fine stone micro-expansion concrete is poured in the pouring hole. The retaining wall is spliced on site in a prefabricated mode, is convenient and fast to construct, is economic and environment-friendly, and can improve the construction efficiency; and reserve the reservation reinforcing bar and reserve the filling hole on prefabricated retaining wall at the top of hat roof beam through earlier stage, will reserve the reinforcing bar and insert in the filling hole during the assembly, make retaining wall and hat roof beam be linked into whole after filling the filling hole with fine stone micro-expansion concrete in later stage, improve the wholeness and the connected node intensity of assembled retaining wall structure.
Description
Technical Field
The utility model belongs to the technical field of foundation pit engineering, and particularly relates to a prefabricated retaining wall structure on the top of a foundation pit.
Background
Often can set up retaining wall in order to prevent that earth's surface soil and water and other debris etc. from falling into the foundation ditch in the foundation ditch engineering, traditional retaining wall often adopts cast-in-place mode and hat roof beam to be under construction in the same period. The conventional retaining wall has the following disadvantages: need ligature reinforcing bar, set up the template, after concreting waiting for the concrete strength to reach intensity the back form removal, it is more loaded down with trivial details with crown beam simultaneous construction template set up moreover, and the construction is troublesome hard, causes great waste. There is a need for a prefabricated retaining wall structure for a foundation pit roof that overcomes the above problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide the prefabricated retaining wall structure for the foundation pit top, which is spliced on site in a prefabricating mode, convenient and fast to construct, economic and environment-friendly.
In order to achieve the purpose, the technical scheme of the utility model is that the prefabricated retaining wall structure for the foundation pit top comprises a crown beam and a prefabricated retaining wall arranged on the crown beam, wherein a filling hole which penetrates through the prefabricated retaining wall along the vertical direction is reserved on the prefabricated retaining wall; reserved steel bars are reserved at the tops of the crown beams, the reserved steel bars partially extend out of the crown beams, and the portions of the reserved steel bars extending out of the crown beams are inserted into the filling holes; a nut is arranged at the top end of the part of the reserved steel bar extending into the filling hole; and fine stone micro-expansion concrete is poured in the pouring hole.
Furthermore, a first groove arranged along the length direction of the top surface of the crown beam is reserved on the top surface of the crown beam, and two first rubber water stop strips are arranged in the first groove; the bottom of one side of prefabricated retaining wall towards in the foundation ditch is fixed with first steel sheet waterstop, the bottom of first steel sheet waterstop inserts between two first rubber waterstops in the first recess.
Furthermore, anchor bars are arranged in the bottom of the prefabricated retaining wall, and the top of the first steel plate water stop belt is fixed with the anchor bars.
Furthermore, a plurality of pouring holes are formed in the prefabricated retaining wall along the length direction of the prefabricated retaining wall, a plurality of reserved steel bars are reserved at the top of the crown beam, and the reserved steel bars are correspondingly inserted into the pouring holes.
Further, the perfusion hole is conical and is large at the top and small at the bottom.
Furthermore, there are multiple prefabricated retaining walls, and the multiple prefabricated retaining walls are spliced in sequence along the length direction of the crown beam.
Furthermore, two ends of the prefabricated retaining wall, which are used for being spliced with the adjacent prefabricated retaining wall, are respectively provided with a second steel plate water stop and a second groove, and two second rubber water stop strips are arranged in the second groove; and the second steel plate water stop on the prefabricated retaining wall is inserted between two adjacent second rubber water stop strips in the second groove on the prefabricated retaining wall.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the retaining wall provided by the utility model is spliced on site in a prefabricated mode, is convenient and fast to construct, is economic and environment-friendly, and can improve the construction efficiency;
(2) according to the utility model, the prefabricated retaining wall is prefabricated in a factory in blocks, the reserved steel bars are reserved on the top of the crown beam in the early stage and the filling holes are reserved on the prefabricated retaining wall, then the reserved steel bars on the crown beam are inserted into the filling holes on the prefabricated retaining wall during construction, and the retaining wall and the crown beam are connected into a whole after the filling holes are filled with fine stone micro-expansion concrete in the later stage, so that the integrity of the assembled retaining wall structure and the strength of the connecting nodes of the prefabricated retaining wall and the crown beam are improved;
(3) according to the utility model, the bottom of the first steel plate water stop belt fixed on the prefabricated retaining wall is inserted between the two first rubber water stop strips in the first groove on the top surface of the crown beam, so that the waterproof performance and the assembly precision of the node are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a prefabricated retaining wall according to an embodiment of the present invention;
fig. 2 is a schematic view of a prefabricated retaining wall structure on the top of a foundation pit according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a prefabricated retaining wall according to an embodiment of the present invention;
FIG. 4 is a view A-A of FIG. 2;
in the figure: 1. prefabricating a retaining wall; 2. a crown beam; 3. a perfusion hole; 4. reserving a steel bar; 5. a nut; 6. fine stone micro-expansive concrete; 7. a first groove; 8. a first rubber water stop bar; 9. a first steel water stop; 10. Anchoring ribs; 11. a second steel water stop; 12. a second groove; 13. a second rubber water stop strip; 14. and (4) a building envelope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 4, the embodiment provides a prefabricated retaining wall structure for a foundation pit top, which includes a crown beam 2 and a prefabricated retaining wall 1 disposed on the crown beam 2, wherein a filling hole 3 penetrating through the prefabricated retaining wall 1 in the vertical direction is reserved on the prefabricated retaining wall 1; reserved steel bars 4 are reserved at the tops of the crown beams 2, parts of the reserved steel bars 4 extend out of the crown beams 2, and the parts of the reserved steel bars 4 extending out of the crown beams 2 are inserted into the pouring holes 3; a nut 5 is arranged at the top end of the part of the reserved steel bar 4 extending into the pouring hole 3; and fine stone micro-expansion concrete 6 is poured in the pouring hole 3. According to the embodiment, the filling hole 3 which penetrates through the retaining wall 1 along the vertical direction is reserved on the retaining wall 1 when the retaining wall 1 is prefabricated, the reserved reinforcing steel bar 4 of which the part extends out of the crown beam 2 is reserved at the top of the crown beam 2 when the crown beam 2 is constructed, the reserved reinforcing steel bar 4 is inserted into the filling hole 3 when the retaining wall 1 is assembled, and then fine stone micro-expansion concrete 6 is poured into the filling hole 3, so that the retaining wall and the crown beam 2 are connected into a whole, and the integrity of the assembled retaining wall structure and the strength of a connecting joint of the retaining wall 1 and the crown beam 2 are improved; and meanwhile, a nut 5 is arranged at the top end of the part of the reserved steel bar 4 extending into the filling hole 3, so that the reliable connection between the reserved steel bar 4 and the fine stone micro-expansion concrete 6 is increased, and the integrity of the prefabricated retaining wall 1 and the crown beam 2 is further improved.
Furthermore, a first groove 7 arranged along the length direction of the top surface of the crown beam 2 is reserved on the top surface of the crown beam, and two first rubber water stop strips 8 are arranged in the first groove 7; the bottom of one side of prefabricated retaining wall 1 in towards the foundation ditch is fixed with first steel sheet waterstop 9, the bottom of first steel sheet waterstop 9 inserts between two first rubber waterstops 8 in the first recess 7. This embodiment is through the fixed first steel sheet waterstop 9 in the bottom of prefabricated retaining wall 1 one side, and follow two first rubber waterstops 8 of 2 length direction installation of guan liang in the first recess 7 that corresponding position department reserved on the top surface of guanliang 2, one side that will prefabricate retaining wall 1 when prefabricated retaining wall 1 assembly is fixed with first steel sheet waterstop 9 is towards the foundation ditch in, and insert between two first rubber waterstops 8 in first recess 7 with the bottom of first steel sheet waterstop 9, not only can improve the waterproof performance that can the node, can also improve assembly efficiency and assembly precision.
Furthermore, the bottom of the prefabricated retaining wall 1 is provided with an anchor bar 10, and the top of the first steel plate water stop 9 is fixed with the anchor bar 10. As shown in fig. 3, the anchor bars 10 are fixed on the first steel plate water stop 9 of the embodiment, and the anchor bars 10 are embedded in the prefabricated retaining wall 1, so that the integrity of the first steel plate water stop 9 and the prefabricated retaining wall 1 is improved; and meanwhile, the anchor bars 10 are fixed with the concave side of the first steel plate water stop belt 9, so that the concave side of the first steel plate water stop belt 9 faces the upstream surface and the convex side faces the backside surface.
Furthermore, a plurality of pouring holes 3 are formed in the prefabricated retaining wall 1 along the length direction of the prefabricated retaining wall, a plurality of reserved steel bars 4 are reserved at the top of the crown beam 2, and the reserved steel bars 4 are correspondingly inserted into the pouring holes 3. Further, the pouring hole 3 is tapered and is large in top and small in bottom. As shown in fig. 1, a plurality of pouring holes 3 are formed in the prefabricated retaining wall 1 of the present embodiment at intervals along the length direction thereof, and a reserved steel bar 4 is inserted into each pouring hole 3, so that the strength of the connection node between the prefabricated retaining wall 1 and the crown beam 2 is improved.
Further, there are multiple blocks in the prefabricated retaining wall 1, and the multiple blocks of the prefabricated retaining wall 1 are sequentially spliced along the length direction of the crown beam 2. As shown in fig. 2, the retaining wall of this embodiment is formed by splicing in proper order the length direction of prefabricated retaining wall 1 of polylith along hat roof beam 2, through adopting the on-the-spot concatenation of prefabricated mode, improves the efficiency of construction and the quality of retaining wall, and the construction is convenient, economic environmental protection.
Furthermore, two ends of the prefabricated retaining wall 1, which are used for being spliced with the adjacent prefabricated retaining wall 1, are respectively provided with a second steel plate water stop belt 11 and a second groove 12, and two second rubber water stop strips 13 are arranged in the second groove 12; the second steel plate water stop strip 11 on the prefabricated retaining wall 1 is inserted between two second rubber water stop strips 13 in the second groove 12 on the adjacent prefabricated retaining wall 1. As shown in fig. 2, the second steel plate water stop 11 and the second groove 12 on the prefabricated retaining wall 1 of the present embodiment are both extended and arranged along the vertical direction, one side of the second steel plate water stop 11 is pre-embedded in the prefabricated retaining wall 1, the second rubber water stop 13 is oppositely arranged along the vertical direction, and the second steel plate water stop 11 on the prefabricated retaining wall 1 for later construction is inserted between two second rubber water stop 13 in the second groove 12 on the prefabricated retaining wall 1 for earlier construction, so as to improve the waterproof performance between the prefabricated retaining walls 1; and meanwhile, when the second steel plate water stop belt 11 is embedded, the concave side faces the upstream surface, and the convex side faces the backside surface.
The embodiment also provides a construction method of the prefabricated retaining wall structure on the top of the foundation pit, which comprises the following steps:
1) prefabricating a prefabricated retaining wall 1 in a factory in blocks, reserving a pouring hole 3 on the prefabricated retaining wall 1, and fixing a first steel plate water stop 9 on one side of the bottom of the prefabricated retaining wall 1;
2) constructing a crown beam 2, reserving a first groove 7 and a reserved steel bar 4 at the top of the crown beam 2, and installing two first rubber water stop strips 8 in the first groove 7;
3) hoisting the prefabricated retaining wall 1, enabling one side fixed with the first steel plate water stop 9 to face the inside of the foundation pit, inserting the first steel plate water stop 9 at the bottom of the prefabricated retaining wall 1 between the two first rubber water stop strips 8 in the first groove 7, and simultaneously inserting the reserved steel bars 4 at the top of the crown beam 2 into the pouring holes 3 in the prefabricated retaining wall 1;
4) a nut 5 is arranged at the top end of the part of the reserved steel bar 4 extending into the pouring hole 3, and then fine stone micro-expansion concrete 6 is poured into the pouring hole 3;
5) and (4) installing the residual prefabricated retaining wall 1 in blocks by adopting the steps 3) and 4) to finish the construction of the retaining wall.
The retaining wall of the embodiment is prefabricated in blocks and then spliced after being transported to the site, so that the construction is convenient, the production efficiency can be improved, the method is economic and environment-friendly, the construction period is shortened, and the labor force is saved; the method can be widely used for foundation pit engineering.
Further, when the prefabricated retaining wall 1 is prefabricated, a second steel plate water stop strip 11 and a second groove 12 are respectively arranged at two ends of the prefabricated retaining wall 1, which are used for being spliced with the adjacent prefabricated retaining wall 1, and two second rubber water stop strips 13 are installed in the second groove 12; when the adjacent prefabricated retaining walls 1 are spliced, the second steel plate water stop strips 11 on the prefabricated retaining wall 1 to be constructed later are inserted between the two second rubber water stop strips 13 in the second grooves 12 on the prefabricated retaining wall 1 to be constructed earlier.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a prefabricated assembled retaining wall structure in foundation ditch top which characterized in that: the prefabricated retaining wall comprises a crown beam and a prefabricated retaining wall arranged on the crown beam, wherein a filling hole which penetrates through the prefabricated retaining wall along the vertical direction is reserved on the prefabricated retaining wall; reserved steel bars are reserved at the tops of the crown beams, the reserved steel bars partially extend out of the crown beams, and the portions of the reserved steel bars extending out of the crown beams are inserted into the filling holes; a nut is arranged at the top end of the part of the reserved steel bar extending into the filling hole; and fine stone micro-expansion concrete is poured in the pouring hole.
2. The prefabricated retaining wall structure of a foundation pit roof of claim 1, wherein: a first groove arranged along the length direction of the top surface of the crown beam is reserved on the top surface of the crown beam, and two first rubber water stop strips are arranged in the first groove; the bottom of one side of prefabricated retaining wall towards in the foundation ditch is fixed with first steel sheet waterstop, the bottom of first steel sheet waterstop inserts between two first rubber waterstops in the first recess.
3. The prefabricated retaining wall structure of a foundation pit roof of claim 2, wherein: and anchor bars are arranged in the bottom of the prefabricated retaining wall, and the top of the first steel plate water stop is fixed with the anchor bars.
4. The prefabricated retaining wall structure of a foundation pit roof of claim 1, wherein: the prefabricated retaining wall is provided with a plurality of pouring holes along the length direction, a plurality of reserved steel bars are reserved at the top of the crown beam, and the reserved steel bars are correspondingly inserted into the pouring holes.
5. The prefabricated retaining wall structure of a foundation pit roof of claim 4, wherein: the perfusion hole is conical and is large in the upper part and small in the lower part.
6. A prefabricated retaining wall structure for the top of a foundation pit according to any one of claims 1 to 5, wherein: the prefabricated retaining wall has the polylith, and the polylith prefabricated retaining wall is followed the length direction of hat roof beam splices in proper order.
7. The prefabricated retaining wall structure of a foundation pit roof of claim 6, wherein: two ends of the prefabricated retaining wall, which are used for being spliced with the adjacent prefabricated retaining wall, are respectively provided with a second steel plate water stop and a second groove, and two second rubber water stop strips are arranged in the second groove; and the second steel plate water stop on the prefabricated retaining wall is inserted between two adjacent second rubber water stop strips in the second groove on the prefabricated retaining wall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023040280.9U CN215562640U (en) | 2020-12-17 | 2020-12-17 | Prefabricated assembled retaining wall structure in foundation ditch top |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023040280.9U CN215562640U (en) | 2020-12-17 | 2020-12-17 | Prefabricated assembled retaining wall structure in foundation ditch top |
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| CN215562640U true CN215562640U (en) | 2022-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359865A (en) * | 2020-12-17 | 2021-02-12 | 中铁第四勘察设计院集团有限公司 | Prefabricated assembly type retaining wall structure for foundation pit top and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359865A (en) * | 2020-12-17 | 2021-02-12 | 中铁第四勘察设计院集团有限公司 | Prefabricated assembly type retaining wall structure for foundation pit top and construction method thereof |
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