CN217758841U - Layered sectional type upright self-stabilizing enclosure structure - Google Patents
Layered sectional type upright self-stabilizing enclosure structure Download PDFInfo
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- CN217758841U CN217758841U CN202221798538.8U CN202221798538U CN217758841U CN 217758841 U CN217758841 U CN 217758841U CN 202221798538 U CN202221798538 U CN 202221798538U CN 217758841 U CN217758841 U CN 217758841U
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- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 13
- 238000006073 displacement reaction Methods 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 5
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- 239000000463 material Substances 0.000 description 5
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- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
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- 238000003756 stirring Methods 0.000 description 2
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- 210000001015 abdomen Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
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- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
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- 238000011065 in-situ storage Methods 0.000 description 1
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Abstract
The utility model discloses a layering sectional type is upright from stable envelope, this structure includes: enclosing piles; the soil reserving area is positioned on one side of the guard post and is abutted against the guard post; the excavation area is sequentially arranged at the soil retention area at intervals and divides the soil retention area into a plurality of soil retention subareas; the first connecting unit is arranged at the top of the soil retaining partition and is connected or contacted with the side wall of the fender post; the top of the diagonal bracing pile is fixedly connected with the top of the fender post, and the lower part of the diagonal bracing pile penetrates through the first connecting unit and then extends into the soil retaining partition. The utility model discloses can further improve the horizontal force, reduce horizontal displacement and reduce horizontal displacement to the influence of strutting, utilize the multiposition to strut and alleviate horizontal displacement moment and disperse to can guarantee foundation ditch engineering's safety, it has advantages such as the time limit for a project is short, the cost is low, environmental protection.
Description
Technical Field
The utility model relates to an envelope technical field of foundation ditch especially relates to a layering sectional type is upright from steady envelope.
Background
Along with the deepening of city construction, foundation pit engineering always has huge demands in the city engineering construction, along with the continuous development of cities, the complexity of the surrounding environment of a foundation pit is higher and higher, the existing building (structure) is closer to the edge of the foundation pit, and the design and construction of foundation pit enclosure face greater safety technical challenges.
The conventional inclined throwing support is not preferred due to complex working procedures, high requirements on construction operation surfaces, multiple factors influencing construction progress and the like because of the limitation of the surrounding environmental conditions of the foundation pit. The patent technology of the self-stabilizing foundation pit supporting structure is gradually applied to corresponding foundation pit supporting because of the advantages of simple process, basically no occupation of field operation outside the foundation pit, basically no occupation of effective construction period when the self-stabilizing foundation pit supporting structure is synchronously constructed with the enclosure body, realization of open type earthwork excavation of the foundation pit and the like.
The self-stabilizing foundation pit support has good social benefit, economic benefit and environmental benefit in recent popularization and application. The core purpose is to reduce the dependence on the traditional internal support system in the foundation pit construction from the internal support to the non-internal support construction, thereby reducing the dependence on the internal support system in the construction process, and achieving the purposes of shortening the construction period, reducing the manufacturing cost, protecting the environment and the like. At present, in areas such as Shanghai, a plurality of application cases exist.
A single supporting system is adopted in a conventional self-stabilizing foundation pit supporting pit, and the following defects exist: 1) And because the construction depth is continuously increased at present, a single supporting system cannot meet the construction depth of more than 10 meters, and the bearing capacity of the retaining structure cannot meet the construction requirement. 2) The requirement of foundation pit construction on red lines is higher and higher, the traditional self-stabilizing foundation pit support needs to adopt double-row pile support for the foundation pit with the excavation depth of more than 8 m, the underground structural space utilization can not be maximized by 3), the bending resistance of the middle part of the enclosure is weaker, the foundation pit excavation is easy to cause the deformation of a big belly, and the foundation pit is unfavorable for controlling the risk of a foundation pit body; 4) The bending resistance of the single front diagonal bracing pile is insufficient, and when the excavation depth is deep, the middle part of the front diagonal bracing pile generates large bending moment, so that the situation that the front diagonal bracing pile deforms and is damaged too much is caused.
SUMMERY OF THE UTILITY MODEL
In view of this, there is a need to provide a layered sectional type upright self-stabilized envelope structure for solving the above technical problems.
A layered segmented upright self-stabilizing enclosure comprising:
enclosing piles;
the soil reserving area is positioned on one side of the fender post and is abutted against the fender post;
the excavation area is sequentially arranged at the soil retention area at intervals and divides the soil retention area into a plurality of soil retention subareas;
the first connecting unit is arranged at the top of the soil retaining partition and is connected with or contacted with the side wall of the fender post;
the top of bracing pile with the top fixed connection of fender pile, and part the lower part of bracing pile passes stretch into behind the first linkage unit in the soil retention subregion.
In one embodiment, the first connecting unit comprises a plurality of connecting plates, each connecting plate is arranged at the top of the corresponding soil retaining partition, and the connecting plates are made of reinforced cushion plates or steel plates.
In one embodiment, a grouting unit is arranged at the bottom of each diagonal bracing pile, and the top of each diagonal bracing pile is fixedly connected with the top of each fender post through a first enclosing purlin.
In one embodiment, a row pile is arranged on one side of the fender post, which is far away from the diagonal bracing pile, and the top of the row pile is connected with the top of the fender post through a second purlin and a connecting beam.
In one embodiment, the pile comprises a reverse oblique pile, the reverse oblique pile is obliquely arranged on one side, away from the oblique supporting pile, of the guard pile, and the top of the reverse oblique pile is connected with the top of the guard pile.
In one embodiment, a second connecting unit which is flush with the first connecting unit is arranged above the excavation area, the second connecting unit is located above the excavation area, and the second connecting unit is fixedly connected with the first connecting unit.
Above-mentioned layering sectional type is upright from stable formula envelope, through the supporting construction who adopts first connecting element cooperation bracing pile, utilize first connecting element with the bracing pile in second floor construction face, it is connected with the fender pile to reserve the soil area, make the fender pile, first connecting element, the bracing pile forms a whole with the soil and water pressure behind the enclosure wall with reserving the soil area, through further improving the horizontal force, reduce horizontal displacement and reduce the influence of horizontal displacement to strutting, utilize multiposition to strut to alleviate and disperse horizontal displacement moment, thereby can guarantee the safety of foundation ditch engineering, it has the time limit for a project weak point, low in cost, advantages such as environmental protection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a layered sectional type upright self-stabilized envelope according to a first embodiment of the present invention;
fig. 2 is a schematic three-dimensional structure diagram of a layered sectional type upright self-stabilized envelope according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a layered sectional type upright self-stabilized envelope according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a layered segmented upright self-stabilized envelope according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a layered sectional type upright self-stabilized envelope according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a layered sectional type upright self-stabilized envelope according to a fifth embodiment of the present invention;
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The first embodiment is as follows:
referring to fig. 1-2, an embodiment of the present invention provides a layered sectional type upright self-stabilizing enclosure, including:
a fender post 1; the fender pile 1 is in direct contact with the soil body, and foundation pit soil retaining structures such as cast-in-place piles, precast piles, stirring pile inserted reinforcing members and the like can be adopted;
the soil reserving area 2 is positioned on one side of the fender post 1, and the soil reserving area 2 is abutted with the fender post 1;
the excavation area 3 is sequentially arranged at the soil retention area 2 at intervals, and the excavation area 3 divides the soil retention area 2 into a plurality of soil retention subareas;
the first connecting unit 4 is arranged at the top of the soil-retaining subarea, and the first connecting unit 4 is connected with or contacted with the side wall of the fender post 1;
and the top of the diagonal bracing pile 5 is fixedly connected with the top of the fender pile 1, and part of the lower part of the diagonal bracing pile 5 penetrates through the first connecting unit 4 and then extends into the soil retaining partition.
Above-mentioned layering sectional type upright self-stabilizing envelope, through adopting the supporting construction of first connecting element 4 cooperation bearing diagonal stake 5, utilize first connecting element 4 to be connected bearing diagonal stake 5, soil conservation district 2 and fender post 1 at the second floor construction face, make fender post 1, first connecting element 4, bearing diagonal stake 5 and soil conservation district 2 form an entirety and resist the soil and water pressure behind the enclosure wall, through further improving the horizontal force, reduce horizontal displacement and to the influence of strutting, utilize multiposition to strut and alleviate horizontal displacement moment and disperse, thereby can guarantee the safety of foundation ditch engineering, it has advantages such as the time limit for a project is short, the cost is low, the environmental protection.
The utility model discloses an embodiment, first connecting unit 4 includes a plurality of connecting plates 41, every connecting plate 41 sets up respectively at the top of the subregion of staying soil that corresponds, wherein, connecting plate 41 adopts reinforcement pad board or steel sheet preparation to form.
In this embodiment, connecting plate 41 is fixed at the top of staying native subregion to be connected with the pile shaft of bracing stake 5, the one end of connecting plate 41 is connected or contacts with the pile shaft of fender pile 1, and its main function is: through connecting plate 41's effect, conduct bracing pile 5's atress to in the soil layer of staying native subregion through connecting plate 41, thereby can promote bracing pile 5's bearing capacity, and simultaneously, it can also reduce the length that exposes of bracing pile 5 to stay native subregion and connecting plate 41, increase bracing pile 5's stability jointly, improve bracing pile 5's atress, and, when connecting plate 41's one end is connected or contacts with the pile body of fender pile 1, can provide certain horizontal resistance and pile body frictional force, the pile body that reduces fender pile 1 warp and internal force. Alternatively, the structure of the connection plate 41 may be made of a cement-based material, plain concrete, reinforced concrete, steel plate, or the like.
Example two:
referring to fig. 3, in an embodiment of the present invention, the bottom of the diagonal pile 5 is provided with a grouting unit 6, and the top of the diagonal pile 5 is fixedly connected to the top of the fender pile 1 through a first enclosing purlin 7.
In this embodiment, the arrangement of the grouting unit 6 may increase the bottom expanding construction of the raking prop 5, thereby increasing the bearing capacity of the raking prop 5. Specifically, the grouting time of the diagonal bracing pile 5 is grouting after construction is completed, and cement grout, other reinforcing grout and the like can be adopted for grouting. The bearing capacity of the diagonal bracing pile 5 can be improved by increasing grouting, and the effects of controlling foundation pit deformation and the like are improved.
It should be noted that, the first enclosing purlin 7 connects the pile head of the enclosing pile 1 with the pile head of the diagonal bracing pile 5, and the main function is as follows: the fender post 1 and the diagonal piles 5 are stressed cooperatively, and the first purlin 7 can be made of plain concrete, reinforced concrete or steel materials. The top of the diagonal bracing pile 5 is connected with the first enclosing purlin 7, the lower part of the diagonal bracing pile 5 penetrates through the connecting plate 41 and is connected with the connecting plate 41, and the diagonal bracing pile mainly bears the internal force transmitted by the first enclosing purlin 7 and controls the deformation of the top of the enclosing pile 1.
Alternatively, the inclined strut pile 5 can be made of steel pipe piles, prefabricated piles, steel lattices, profile steel, composite piles, stirring pile inserted reinforcing members, jet grouting pile inserted reinforcing members, prefabricated hollow pile internal ramming fillers and the like, and the bearing capacity of the inclined strut pile 5 can be improved by expanding, grouting bags and the like.
Example three:
referring to fig. 4, in an embodiment of the present invention, one side of the fender pile 1 away from the raking pile 5 is provided with a row pile 8, and the top of the row pile 8 is connected to the top of the fender pile 1 through a second purlin 9 and a connecting beam 10.
In this embodiment, the row piles 8 may be steel pipe (plate) piles, construction piles (reinforcing members inserted in the mixing piles), precast piles, cast-in-place piles, and the like, and the coupling beams 10 may be made of reinforced concrete, steel pipes, steel plates, or other various materials capable of connecting the two enclosing purlins (the first enclosing purlin 7 and the second enclosing purlin 9). The framed bent or steel frame structure formed by connecting the row piles 8, the guard piles 1, the connecting beams 10 and the like can increase the rigidity of the enclosure structure and reduce the deformation of the enclosure structure, thereby increasing the applicable depth of the utility model. In addition, the present embodiment is applied in combination with the second embodiment, and the embedding depth of the connecting plate 41 can be greatly increased, so that the excavation depth of the entire foundation pit can be increased.
Example four:
referring to fig. 5, in an embodiment of the present invention, the present invention further includes a reverse inclined pile 11, the reverse inclined pile 11 is obliquely disposed on one side of the fender pile 1 away from the inclined supporting pile 5, and the top of the reverse inclined pile 11 is connected to the top of the fender pile 1.
In this embodiment, the reverse batter pile 11 is suitable for the occasion that requires the broad or place to possess certain implementation condition in the foundation ditch red line, and its aim at: increase foundation ditch deformation control effect, improve stability, this embodiment combines with embodiment one or embodiment two, can improve the total degree of depth of excavation on soil layer, increases the utility model discloses an application scope.
Example five:
referring to fig. 6, in an embodiment of the present invention, a second connection unit 12 is disposed above the excavation region 3 and flush with the first connection unit 4, the second connection unit 12 is disposed above the excavation region 3, and the second connection unit 12 is fixedly connected to the first connection unit 4.
In this embodiment, first linkage element 4 and second linkage element 12 adopt whole continuous modes to be under construction, and it can increase the joint strength of bracing pile 5 and connecting plate 41 to increase the bulk rigidity of bracing pile 5 and whole support system, reduce envelope's deformation, increase the excavation degree of depth of foundation ditch, increase the utility model discloses an application scope.
The utility model discloses in, the construction method of layering sectional type upright self-stabilizing envelope as follows:
s1, constructing a fender post 1; the fender pile 1 can be guarded by a single row of cast-in-situ bored piles, so that the land area occupied by the foundation pit guard structure is saved;
s2, constructing the diagonal bracing piles 5 to enable the tops of the diagonal bracing piles 5 to be adjacent to the tops of the fender posts 1; specifically, the diagonal bracing piles 5 are pressed into soil by a pile driver in the inclined direction of 30-60 degrees, so that the tops of the diagonal bracing piles 5 are adjacent to the top of the fender post 1; wherein, the inclined strut pile 5 can adopt a steel pipe pile with the diameter of 377mm, a grouting pipe is arranged in the inclined strut pile 5, and reinforcing slurry is injected into the inclined strut pile 5 after the inclined strut pile is driven into a designated position; the included angle between the diagonal bracing pile 5 and the horizontal plane is 30-60 degrees, and the interval is 1-5m;
s3, constructing a first enclosing purlin 7, and pouring and connecting the top of the diagonal bracing pile 5 and the top of the enclosing pile 1 by using concrete and maintaining; the curing time is as follows: the strength requirement of the first enclosing purlin 7 is met;
s4, excavating earthwork, and excavating the area of the soil remaining area 2 to the height of the connecting plate 41; the top surface of the soil retention area 2 can be a rectangle of 15m multiplied by 20 m;
s5, constructing a connecting plate 41, and connecting the connecting plate 41 with the inclined strut pile 5 and the fender pile 1;
s6, after the excavation of the excavation area 3 is finished, pouring a bottom plate in the castable bottom plate area and maintaining;
s7, excavating a soil layer of the soil reserving area 2;
and S8, constructing the soil retention area 2 and other residual structural bottom plates in the areas.
In this embodiment, the first enclosing purlin 7 may be made of a reinforced concrete material, and after the pile head of the enclosing pile 1 is leveled, reinforcing steel bars are bound, and concrete is poured to connect the diagonal bracing pile 5 with the pile head of the enclosing pile 1; the connecting plate 41 may be a 15m × 15m rectangle, and a reinforced cushion plate or a steel plate may be used. When the plate surface of the connecting plate 41 is excavated, a reinforcing bar cushion layer is constructed or a steel plate is welded, and the connecting plate 41 is quickly constructed and connected with the inclined strut pile 5.
In an embodiment of the present invention, in step S4, the slope is excavated between the soil reserving area 2 and the excavation area 3, and the slope proportion is 1 to 1.
To sum up, the utility model has the advantages that:
1) The construction method has the advantages that the advanced support is realized, the construction of the diagonal bracing piles is synchronously carried out during the construction of the enclosure body, the effective construction period is basically not occupied, the construction and maintenance of the enclosure purlin and the support are completed, the excavation of the earthwork of the foundation pit can be implemented, the construction period can be effectively reduced, the construction cost is reduced, and the engineering cost is saved;
2) The technology adopts a single-row pile scheme, the supporting construction is carried out in the foundation pit without occupying effective space outside the pit, compared with a double-row or multi-row fender pile foundation pit scheme, the influence on the field space and the surrounding environment is greatly reduced, the land resource can be more fully facilitated, the use area of the foundation pit is effectively increased, and the better economic benefit is realized by taking the foundation pit with 1 ten thousand square excavation as an example;
3) The utility model discloses under the condition that does not increase second pair of propping and multichannel bracing, make full use of stays and excavate the space-time effect, only through layering segmentation excavation to the mode that sets up the reinforcing plate partially satisfies foundation ditch excavation supporting requirement, has great economic advantage than prior art, and the foundation ditch excavation area is big more the higher the price/performance ratio is;
4) The utility model connects the inclined supporting piles with the guard piles by adopting the connecting plates to form a uniform stress structure, reduces the excavation depth of the local foundation pit of the guard piles by utilizing the local soil retaining effect in the pit, can further improve the horizontal stress of the guard piles, reduce the horizontal displacement of the guard piles and reduce the influence of earthwork excavation on the guard structures;
5) The utility model effectively shortens the construction period, reduces the construction risk of the foundation pit, and increases the safety of the foundation pit;
6) The utility model uses fewer construction machines and is a conventional engineering apparatus, in addition, the utility model has the advantages of simple construction process, fast construction speed and wide application range;
(7) The utility model discloses green, environment and social are obvious. The consumption of materials such as reinforcing steel bars, concrete and the like is far less than that of the conventional scheme, secondary noise and dust pollution to the environment when the support is detached are avoided, and the social comprehensive benefit is remarkable;
therefore, the utility model has strong feasibility, economy and applicability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, but should not be interpreted as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. The utility model provides a layering sectional type is upright from stable formula envelope which characterized in that includes:
a fender pile;
the soil reserving area is positioned on one side of the fender post and is abutted against the fender post;
the excavation area is sequentially arranged at the soil retention area at intervals and divides the soil retention area into a plurality of soil retention subareas;
the first connecting unit is arranged at the top of the soil retaining partition and is connected with or contacted with the side wall of the fender post;
the top of bracing pile with the top fixed connection of fender pile, and part the lower part of bracing pile passes stretch into behind the first linkage unit in the soil retention subregion.
2. The layered segmented upright self-stabilizing envelope of claim 1, wherein the first connecting unit comprises a plurality of connecting plates, each of the connecting plates being disposed at the top of a corresponding soil retaining segment, wherein the connecting plates are made of reinforced spacer plates or steel plates.
3. The layered segmented upright self-stabilized envelope of claim 2, wherein a grouting unit is provided at the bottom of the diagonal bracing pile, and the top of the diagonal bracing pile is fixedly connected with the top of the fender pile through a first purlin.
4. The layered segmented upright self-stabilizing envelope according to claim 2 or 3, wherein a row pile is arranged on the side of the enclosing pile away from the diagonal piles, and the top of the row pile is connected with the top of the enclosing pile through a second enclosing purlin and a connecting beam.
5. The layered segmented upright self-stabilizing envelope of claim 1, further comprising a reverse batter pile obliquely disposed on a side of the envelope pile remote from the raker pile, and a top of the reverse batter pile is connected with a top of the envelope pile.
6. The layered segmented upright self-stabilizing envelope according to claim 1, in which a second connection unit is provided above the excavated area, flush with the first connection unit, and is located above the excavated area, and the second connection unit is fixedly connected to the first connection unit.
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| CN202221798538.8U CN217758841U (en) | 2022-07-13 | 2022-07-13 | Layered sectional type upright self-stabilizing enclosure structure |
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| CN202221798538.8U CN217758841U (en) | 2022-07-13 | 2022-07-13 | Layered sectional type upright self-stabilizing enclosure structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115094907A (en) * | 2022-07-13 | 2022-09-23 | 上海勘察设计研究院(集团)有限公司 | Layered sectional type upright self-stabilizing enclosure structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115094907A (en) * | 2022-07-13 | 2022-09-23 | 上海勘察设计研究院(集团)有限公司 | Layered sectional type upright self-stabilizing enclosure structure and construction method |
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Address after: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee after: Shanghai Survey, Design and Research Institute (Group) Co.,Ltd. Address before: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee before: SGIDI ENGINEERING CONSULTING (Group) Co.,Ltd. |