CN209873814U - A construction structures for handling foundation ditch inter-pile soil collapses - Google Patents
A construction structures for handling foundation ditch inter-pile soil collapses Download PDFInfo
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- CN209873814U CN209873814U CN201920519215.2U CN201920519215U CN209873814U CN 209873814 U CN209873814 U CN 209873814U CN 201920519215 U CN201920519215 U CN 201920519215U CN 209873814 U CN209873814 U CN 209873814U
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Abstract
A construction structures for handling foundation ditch stake is collapsed. The construction structure is including filling the sand bag in the cavity district that the soil body collapsed and formed between two fender piles and arranging reinforcing bar net piece, plank sheathing, horizontal reinforcing bar, concrete back up coat and a plurality of string net staple between two fender piles in, and the pile body and the sand bag of two fender piles are implanted in the dispersion of a plurality of string net staple, and reinforcing bar net piece welding is on hanging net staple, and the plank sheathing is propped up and is located the reinforcing bar net piece outside to with its fixed positioning through horizontal reinforcing bar and both sides string net staple welding, the concrete back up coat is through pouring the back up coat that forms after the concrete material solidifies in the space between sand bag and template. The utility model provides an area soil body between piles such as old cohesive soil, sandy soil collapse and form the problem that dark big cavity is difficult to handle, avoid taking place the hole top soil body collapse, close on road or building fracture incident such as subsidence of hillside top, guaranteed the soil body that collapses between the pile especially dark big cavity's reinforcement effect.
Description
Technical Field
The utility model relates to a geotechnical engineering field, concretely relates to a construction structures for handling foundation ditch inter-pile soil collapse.
Background
In the field of foundation pit support, the suspended net concrete spraying is a common support means and is commonly used for protecting soil bodies between support piles. The common concrete structure for hanging net and spraying concrete between piles is shown in fig. 2, and adopts the method of driving (implanting) soil nails between piles and in pile body, fixing steel bar net sheet or steel plate net, and spraying concrete with a certain thickness, so that it has good supporting effect for soil layer between piles, in particular for soft soil layer. However, on site, due to poor construction quality or management level (e.g., excavation and timely support are not performed according to design requirements), collapse or loss of a slope foot soil body between piles often occurs in old cohesive soil and sandy soil areas, which seriously causes the falling of a steel bar net or a steel plate net and the formation of deep and large cavities between piles (as shown in fig. 4), so that roads and buildings near the top of a pit generate large displacement or settlement, which forms large potential safety hazards, and large-area rework is caused, which causes delay of the construction period of support and increase of the construction cost.
Therefore, in order to ensure the construction safety in the foundation pit and the normal operation of the road and the building structures near the top of the pit after the soil between the piles of the foundation pit collapses, the collapsed soil between the piles must be processed in time.
Disclosure of Invention
The utility model discloses the phenomenon of collapsing of soil between to current foundation ditch stake provides one kind and adopts the sand bag to backfill the hole that collapses of deep portion between the compaction stake, it hangs the reinforcing bar net piece to combine pile body bar planting again, the construction structures that the foundation ditch stake of outside unilateral formwork concreting shutoff collapses, old cohesive soil can be solved to this construction structures, the soil body collapses and forms the problem that deep big cavity is difficult to handle between regional stake such as sandy soil, and can avoid taking place the pit top soil body and collapse, close on the road of hillside top or building thing fracture safety accidents such as subsidence, the soil body that collapses especially is deep big cavity's reinforcement effect between the stake, this structural cost is lower, on-site easy operation, can realize promoting fast.
In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a construction structures for handling foundation ditch inter-pile soil collapses which characterized in that: the construction structure is including filling the sand bag in the cavity district that the soil body collapsed and formed between two fender piles and arranging the reinforced structure between two liang of fender piles in, reinforced structure includes reinforcing bar net piece, plank sheathing, horizontal reinforcing bar, concrete back up coat and a plurality of string net staple, in pile body and the sand bag of two fender piles were implanted in the dispersion of a plurality of string net staple, reinforcing bar net piece welding was on hanging the net staple, the plank sheathing is propped up and is located the reinforcing bar net outside to hang the net staple welding through horizontal reinforcing bar and both sides and fix a position it, the concrete back up coat is through pouring the back up coat that the concrete material formed after solidifying in the space between sand bag and template to demolish the template after the concrete back up coat reached design strength.
The utility model provides a technical scheme: the sand bag is filled in a cavity area formed by soil body collapse between the two retaining piles in a staggered joint overlapping mode, and a base is cleaned and leveled between the piled and filled sand bags.
The utility model provides a technical scheme: the hanging net short nail implanted into the support pile is fixedly connected with the support piles on two sides by adopting a method of drilling a pile body and planting ribs.
The utility model provides a technical scheme: the hanging net short nail adoptsThe length of the steel bar is not less than 50cm, and the depth of the steel bar embedded into the pile body or the sand bag of the support pile is not less than 20 cm.
The utility model provides a technical scheme: the reinforcing mesh adoptsAnd (5) manufacturing reinforcing steel bars, wherein the distance is 200mm multiplied by 200 mm.
The utility model provides a technical scheme: the width of the wood template is larger than or equal to the widest part of the soil collapse area between the covered piles, and the wood template is tightly attached to the single-side supporting formwork on the outer side of the supporting pile.
The utility model provides a technical scheme: the transverse reinforcing steel bar adoptsThe HRB400 steel bars are manufactured, the length of the HRB400 steel bars is larger than the width of the template, and the vertical distance is about 500 mm.
The utility model provides a technical scheme: the concrete reinforcing layer is formed by pouring C20 concrete, and the thickness of the concrete reinforcing layer is not less than 150 mm.
The utility model discloses a plank sheathing should be firm, level and smooth, should cover the area that collapses between the stake on the width direction, hugs closely a fender pile outside unilateral formwork, and the extension can splice in the length direction, does not leak thick liquid when guaranteeing to pour concrete, once pours the completion shutoff to the regional outside that collapses between the stake as far as possible.
The utility model discloses a sand bag is used for the backfill compaction in the cavernous region that the soil body collapsed and formed between the stake, to the hole wall formation that collapses fold a packet backpressure, combine pile body bar planting to hang the reinforcing bar net piece, the method of outside unilateral formwork concreting shutoff, old cohesive soil has been solved, the soil body collapsed and forms the problem that deep big cavity is difficult to handle between regional stake such as sandy soil, avoid taking place the top of a pit soil body and collapse, close on the road or the building fracture of hillock top incident such as subside, and guaranteed the soil body that collapses between the stake especially the reinforcement effect in deep big cavity, and this structure cost is lower, the on-the-spot easy operation, can realize promoting fast.
Drawings
Fig. 1 is a schematic structural plan view of the present invention;
fig. 2 is a schematic structural elevation view of the present invention;
fig. 3 is the original supporting structure schematic diagram of the inter-pile soil of the utility model.
Fig. 4 is a schematic view showing the destruction of the original supporting structure of the inter-pile soil of the present invention.
In the figure, 1-a cavity area, 2-a support pile, 3-a crown beam, 4-an original inter-pile suspended net concrete spraying support structure, 5-a sand bag, 6-a suspended net short nail, 7-a steel bar net piece, 8-a wood template, 9-a transverse steel bar, 10-concrete and 11-an inter-pile soil body.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. Embodiments are shown in fig. 1 to 2, and the following technical solutions shown in the drawings are specific solutions of the embodiments of the present invention, and are not intended to limit the scope of the claimed invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The construction structure for treating soil collapse between foundation pit piles provided by the embodiment comprises sand bags 5 filled in a hollow area 1 formed by soil collapse between two retaining piles 2 and a reinforcing structure arranged between every two retaining piles 2, wherein the sand bags 5 are filled in the hollow area 1 formed by soil collapse between the two retaining piles 2 in a staggered joint overlapping mode, and a base is cleaned and leveled between the piled and filled sand bags 5. The reinforced structure includes reinforcing bar net piece 7, plank sheathing 8, horizontal reinforcing bar 9, concrete back up coat 10 and a plurality of peg 6, in stake body and the sand bag 5 of two fender piles 2 were implanted in the dispersion of a plurality of peg 6, reinforcing bar net piece 7 welding was on peg 6, plank sheathing 8 props up and locates the 7 outsides of reinforcing bar net piece to through horizontal reinforcing bar 9 and the 6 welding of both sides peg 6 with its fixed positioning, concrete back up coat 10 is through pouring the back up coat that forms after the concrete material solidifies in the space between sand bag 5 and template 8 to demolish template 8 after concrete back up coat 10 reached design strength. The hanging net short nail 6 implanted into the support pile 2 is fixedly connected with the support piles 2 at two sides by adopting a method of drilling a pile body and planting bars.
The following embodiments are combined to aim at the utility model discloses further explain, take a certain actual engineering in the old cohesive soil area of wuhan as an example, foundation ditch week length is about 435m, and excavation depth 6.0 ~ 7.5m adopts the supporting scheme of double row pile, and its concrete construction back supporting construction is shown in fig. 3. In the construction process, the steel bar net sheets and the soil body or the supporting structure are not firmly connected, and the steel bar net sheets and the concrete layer are collapsed and damaged when raining seasons, as shown in fig. 4, the soil body between the two support piles 2 collapses to form a hollow area 1, and if the soil between the piles is reinforced by adopting an anchor rod driving mode, the construction cost is increased to about 1680000 yuan. This construction project has adopted the utility model discloses a construction structure consolidates, and its concrete work progress is as follows:
firstly, cleaning a substrate of a cavity area to enable the substrate to be flat, stacking sand bags 5 in the cavity area 1, and stacking the sand bags 5 in staggered joints to ensure that the cavities in the deep soil among piles are backfilled compactly; then, net hanging short nails 6 are arranged in the pile bodies of the two retaining piles 2 and the sand bags 5 in a driving mode, and the net hanging short nails 6 are adopted The length of the steel bar is not less than 50cm, the depth of the steel bar embedded into the pile body of the support pile 2 or the sand bag 5 is not less than 20cm, and the net hanging short nail embedded into the support pile is fixedly connected with the support piles at two sides by adopting a method of drilling the pile body and planting the steel bar; the steel bar net piece 7 is hung outside the net hanging short nail 6, and the steel bar net piece 7 adoptsManufacturing reinforcing steel bars, wherein the space between the reinforcing steel bars is 200mm multiplied by 200mm, and welding a reinforcing steel bar net piece 7 with a net hanging short nail 6; reinforcing mesh7, erecting a wood formwork 8 at the outer side, wherein the wood formwork is firm and flat, covering an inter-pile soil collapse area in the width direction, tightly attaching to a single-side formwork at the outer side of the support pile, splicing and lengthening in the length direction, and ensuring that no slurry is leaked during concrete pouring, positioning and reinforcing the wood formwork 8 through welding and fixing the transverse steel bars 9 and the short nails 6 hanging nets at two sides, then pouring concrete in a gap between the sand bag 5 and the wood formwork 7, removing the formwork after the concrete strength meets the requirement, finally completing backfilling and plugging of the inter-pile soil collapse area, and completing plugging by pouring outside the inter-pile soil collapse area at one time. The transverse reinforcing steel bar 9 adoptsThe HRB400 steel bars are manufactured, the length of the HRB400 steel bars is larger than the width of the template 8, and the vertical distance is about 500 mm. The concrete reinforcing layer 10 is formed by pouring C20 concrete, and the thickness of the concrete reinforcing layer is not less than 150 mm.
The utility model discloses a sand bag is backfilled the hole that collapses of deep portion between compaction stake, combine the pile body bar planting to hang reinforcing bar net piece, the method of outside unilateral formwork concreting shutoff, this kind of "formwork shutoff method" has solved the problem that the soil body collapses and forms deep big cavity and be difficult to handle between regional stake such as old cohesive soil, sandy soil, avoid taking place the top of a pit soil body and collapse, close on road or the building fracture of hillside top and sink incident such as fall to guaranteed the soil body that collapses between the stake especially deep big cavity's reinforcement effect. And this engineering adopts the method, only spend 262000 yuan can reach better reinforcement effect, and avoid doing over again, can practice thrift about 1418000 yuan of engineering cost, and can avoid hindering the time limit for a project because of doing over again. Adopt the utility model discloses economic benefits is showing.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a construction structures for handling foundation ditch inter-pile soil collapses which characterized in that: the construction structure comprises a sand bag (5) filled in a hollow area (1) formed by soil body collapse between two retaining piles (2) and a reinforcing structure arranged between every two retaining piles (2), wherein the reinforcing structure comprises a steel bar net sheet (7), a wooden template (8), transverse steel bars (9), a concrete reinforcing layer (10) and a plurality of net hanging short nails (6), the plurality of net hanging short nails (6) are dispersedly implanted into pile bodies of the two retaining piles (2) and the sand bag (5), the steel bar net sheet (7) is welded on the net hanging short nails (6), the wooden template (8) is erected outside the steel bar net sheet (7) and fixedly positioned by welding the transverse steel bars (9) and the net hanging short nails (6) at two sides, the concrete reinforcing layer (10) is formed by pouring concrete materials in a gap between the sand bag (5) and the template (8) after solidification, and the template (8) is removed after the concrete reinforcing layer (10) reaches the designed strength.
2. The construction structure for handling foundation pit inter-pile soil collapse according to claim 1, wherein: the sand bags (5) are filled in a cavity area (1) formed by soil body collapse between the two retaining piles (2) in a staggered joint overlapping mode, and the base is cleaned and leveled between the piled sand bags (5).
3. The construction structure for handling foundation pit inter-pile soil collapse according to claim 1, wherein: the net hanging short nail (6) implanted into the support pile (2) is fixedly connected with the support piles (2) on the two sides by adopting a method of drilling a pile body and planting ribs.
4. The construction structure for handling foundation pit inter-pile soil collapse according to claim 1, wherein: the short nail (6) for hanging the net adoptsThe HRB400 steel bar is made, the length is not less than 50cm, and the depth embedded into the pile body of the support pile (2) or the sand bag (5) is not less than 20 cm.
5. The method of claim 1, wherein the soil is selected from the group consisting of soil for treating the space between piles of a foundation pitThe construction structure that collapses, its characterized in that: the reinforcing mesh (7) adoptsHPB300 steel bars are manufactured, and the distance is 200mm multiplied by 200 mm.
6. The construction structure for handling foundation pit inter-pile soil collapse according to claim 1, wherein: the width of the wood template (8) is larger than or equal to the widest part of the area covering soil collapse between the piles, and the wood template is tightly attached to the single-side formwork on the outer side of the support pile (2).
7. The construction structure for handling foundation pit inter-pile soil collapse according to claim 1, wherein: the transverse reinforcing steel bar (9) adoptsThe HRB400 steel bars are manufactured, the length of the HRB400 steel bars is larger than the width of the template (8), and the vertical distance is about 500 mm.
8. The construction structure for handling foundation pit inter-pile soil collapse according to claim 1, wherein: the concrete reinforcing layer (10) is formed by pouring C20 concrete, and the thickness of the concrete reinforcing layer is not less than 150 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920519215.2U CN209873814U (en) | 2019-04-16 | 2019-04-16 | A construction structures for handling foundation ditch inter-pile soil collapses |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920519215.2U CN209873814U (en) | 2019-04-16 | 2019-04-16 | A construction structures for handling foundation ditch inter-pile soil collapses |
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| CN209873814U true CN209873814U (en) | 2019-12-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267471A (en) * | 2020-09-25 | 2021-01-26 | 北京城建华夏基础建设工程有限公司 | Treatment process of buried drill slope protection pile supporting structure |
| CN113565149A (en) * | 2021-07-07 | 2021-10-29 | 深圳市中地建设工程有限公司 | Leaking stoppage construction method by external bar planting method between piles |
-
2019
- 2019-04-16 CN CN201920519215.2U patent/CN209873814U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267471A (en) * | 2020-09-25 | 2021-01-26 | 北京城建华夏基础建设工程有限公司 | Treatment process of buried drill slope protection pile supporting structure |
| CN113565149A (en) * | 2021-07-07 | 2021-10-29 | 深圳市中地建设工程有限公司 | Leaking stoppage construction method by external bar planting method between piles |
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Address after: 430080 No. 17 metallurgical Avenue, Qingshan District, Hubei, Wuhan Patentee after: MCC Wukan Engineering Technology Co.,Ltd. Address before: 430080 No. 17 metallurgical Avenue, Qingshan District, Hubei, Wuhan Patentee before: WUHAN SURVEYING GEOTECHNICAL RESEARCH INSTITUTE Co.,Ltd. OF MCC |