CN212405142U - Supporting structure for pile foundation breaking - Google Patents
Supporting structure for pile foundation breaking Download PDFInfo
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- CN212405142U CN212405142U CN202020865566.1U CN202020865566U CN212405142U CN 212405142 U CN212405142 U CN 212405142U CN 202020865566 U CN202020865566 U CN 202020865566U CN 212405142 U CN212405142 U CN 212405142U
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Abstract
The utility model relates to the field of pile foundation removal, in particular to a supporting structure for pile foundation removal, which comprises a transverse support and a longitudinal support; the transverse support is attached to the end face of the pile foundation; the longitudinal support is connected with the transverse support. The utility model discloses a bearing structure is used in pile foundation abolishes through bearing structure's setting, can play a supporting role when abolishing the pile foundation, and convenient follow-up use cover encircles the replacement that carries out the holding power.
Description
Technical Field
The utility model relates to a pile foundation abolishes the field, is a pile foundation abolishes uses bearing structure particularly.
Background
At present, the rapid development and the urbanization process of rail transit in China are gradually accelerated, the construction of underground excavation engineering is already common, most of transfer channels are connected into the original market or buildings for facilitating the transfer of passengers in subway engineering, and are influenced by the original building structure form and building envelope structures or anti-floating structure pile foundations. So that the construction of the existing passage underpass building in China is less at present.
Therefore, a process for cutting off the pile foundation which enters the clearance of the tunnel under the condition of shallow earth covering on the top of the tunnel without breaking the pile foundation of the existing building in a large range is needed at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a bearing structure that uses when pile foundation breaks away.
In order to realize the purpose, the utility model discloses a technical scheme be:
a support structure for pile foundation demolition, the support structure comprising a lateral support and a longitudinal support; the transverse support is attached to the end face of the pile foundation; the longitudinal support is connected with the transverse support.
The transverse support comprises a grid steel frame; the longitudinal support comprises a support steel pipe; and the support steel pipe is fixedly connected with the grid steel frame.
And the grid steel frame is provided with a connecting steel plate, and the end part of the support steel pipe is connected with the connecting steel plate.
The supporting steel pipes are connected with the grid steel frame through bolts.
The support structure further comprises a replacement support; the replacement support comprises a cover arch; the cover arch comprises a reinforced concrete soil layer with an arch-shaped section; and a secondary lining structure for supporting is arranged on the reinforced concrete layer.
A pile foundation removal method based on a support structure for pile foundation removal, the pile foundation removal method comprising the steps of:
(1) determining a pile foundation breaking position;
(2) 1/3 of the transverse width of the selected pile foundation position is broken; after the part of the pile foundation is broken, quickly erecting a transverse support and a vertical support at the broken position;
(3) after the step (2) is finished, selecting the selected pile foundation position again, and then breaking 1/2 of the width of the residual pile foundation; after the breaking, quickly erecting a transverse support and a vertical support at the breaking position;
(4) after the step (3) is finished, selecting the selected pile foundation position again, then breaking the residual pile foundation, and quickly erecting a transverse support and a vertical support at the breaking position after the residual pile foundation is broken;
(5) after the step (4) is finished, constructing a cover arch;
(6) and (5) after the step (5) is finished, removing the steel pipe after the strength of the set arch meets the requirement.
The pile foundation includes the pile foundation reinforcing bar, when carrying out the pile foundation and abolish, requires that the pile foundation reinforcing bar exposes the thickness that the size is not less than horizontal support.
And the pile foundation steel bars penetrate through the grid steel frame.
The pile foundation steel bars are fixedly connected with the adjacent grid steel frames; the pile foundation reinforcing steel bar passes the tip of grid steelframe and bends, and pile foundation reinforcing steel bar tip is bent and is laminated mutually with grid steelframe lower extreme face.
And (3) in the step (2), when the pile foundation is broken, the breaking position in the step (2) is required to be positioned at the edge of the pile foundation and is symmetrical to the breaking position of the pile foundation in the step (1).
The utility model has the advantages that:
the utility model discloses a bearing structure is used in pile foundation abolishes through bearing structure's setting, can play a supporting role when abolishing the pile foundation, and convenient follow-up use cover encircles the replacement that carries out the holding power.
Drawings
The contents of the various figures of the specification and the labels in the figures are briefly described as follows:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partial view of the middle grid steel frame of the present invention.
Fig. 3 is a schematic structural diagram of the construction of the arch cover of the utility model.
Fig. 4 is the structure schematic diagram of the utility model after the support steel pipe is removed.
Fig. 5 is a schematic structural view of the middle support steel pipe of the present invention.
The labels in the above figures are:
1. pile foundation, 2, grid steel frame, 3, support steel pipe, 4, cover arch.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in further detail with reference to the accompanying drawings.
A supporting structure for breaking a pile foundation 1 comprises a transverse support and a longitudinal support; the transverse support is attached to the end face of the pile foundation 1; the longitudinal support is connected with the transverse support; the utility model discloses a supporting structure for breaking pile foundation 1, which can play a supporting role when breaking pile foundation 1 through the arrangement of the supporting structure, and is convenient for the replacement of supporting force by using a cover arch 4 in the follow-up process; the utility model has the advantages that the transverse support plays a role in increasing the contact area, the transverse support is jointed with the section of the pile foundation 1, and the transverse support and the section of the pile foundation 1 can adopt fixed connection; in addition, the longitudinal support plays a main supporting role, and the length of the longitudinal support is slightly shorter than the breaking length of the pile foundation 1; in addition, because the pile foundation 1 generally adopts earlier is that the part breaks, so vertical support both ends need with break back about the 1 tip of two parts pile foundation contact, if use single vertical support, because vertical support is less with 1 section area of contact of pile foundation, cause vertical support to be impressed about 1 inside of pile foundation easily, in order to avoid such technical problem, the utility model discloses a have horizontal support, horizontal support plays and increases bearing structure and 1 sectional area of contact of pile foundation, the purpose is the stability of guaranteeing that pile foundation 1 breaks away, avoids sinking of pile foundation 1.
Preferably, the transverse support of the present invention comprises a grid steel frame 2; the longitudinal support comprises a support steel pipe 3; the support steel pipe 3 is fixedly connected with the grid steel frame 2; the grid steel frame 2 has the following advantages that firstly, the subsequent concrete filling is convenient, secondly, the weight of the transverse support is reduced, and the pressure received by the longitudinal support is reduced; thirdly, the pile foundation reinforcing steel bars 11 can conveniently penetrate through the steel bars, the problem of interference between the pile foundation reinforcing steel bars 11 and the transverse supports is avoided, and meanwhile the transverse supports are conveniently connected with the section of the pile foundation 1; additionally the utility model discloses well longitudinal support is including supporting steel pipe 3, and the purpose is convenient subsequent demolishs, because the utility model discloses well longitudinal support only plays the effect of transition, encircles 4 solidification stabilization backs at the cover, is that need demolish longitudinal support and lower part pile foundation 1, so the utility model discloses use and support steel pipe 3, not only can guarantee the supporting effect, can also make things convenient for subsequent cutting to demolish.
Preferably, in the utility model, the grid steel frame 2 is provided with a connecting steel plate, and the end part of the support steel pipe 3 is connected with the connecting steel plate; the arrangement of the connecting steel plate facilitates the connection of the supporting steel pipe 3 and the grid steel frame 2, the connecting steel plate can be replaced by a steel block, and the grid steel frame 2 is not provided with a connecting hole, so the utility model can adopt the fixed connection of the connecting steel plate and the grid steel frame 2, the connecting steel plate is provided with the connecting hole, and the connecting steel plate is connected with the supporting steel pipe 3 through a bolt, thereby facilitating the connection of the supporting steel pipe 3 and the grid steel frame 2, and in addition, in order to facilitate the bolt to pass through the supporting steel pipe 3, the end part of the supporting steel pipe 3 is provided with a connecting block 3-1 which can be a steel block, when in specific use, the connecting block 3-1 is attached to the connecting steel plate, and then the connecting block is connected with the; can realize like this that the connecting block is connected with the connecting steel plate, support 3 tip of steel pipe simultaneously and can extrude each other with grid steelframe 2, guarantee to support the stability that steel pipe 3 and grid steelframe 2 are connected.
Preferably, in the utility model, the supporting steel pipes 3 are connected with the grid steel frame 2 through bolts; in the utility model, the bolts are connected with the grid steel frame 2 through the bolts, which can facilitate the connection mode between the support steel pipe 3 and the grid steel frame 2, and also facilitate the disassembly and assembly of the support steel pipe 3 and the grid steel frame 2, and in the actual use process, because the upper grid steel frame 2 in the support structure is not disassembled, the upper grid steel frame directly forms a reinforced concrete structure with the concrete of the subsequent cover arch 4; the strength of the reinforced concrete layer is increased, and in addition, as an optimization, the grid steel frame 2 at the lower part of the supporting structure can be detached from the supporting steel pipe 3, so that the subsequent use is facilitated; meanwhile, the dismantled support steel pipe 3 and the grid steel frame 2 can be suitable for the other pile foundation 1 breaking position, and can be selected according to needs, so that the aim of recycling of parts is improved.
Preferably, the support structure of the present invention further comprises a replacement support portion; the replacement support comprises a cover arch 4; the cover arch 4 comprises a reinforced concrete layer with an arch-shaped section; a secondary lining structure 41 for supporting is arranged on the reinforced concrete layer; here the replacement supporting part is in fact exactly that a cover encircles 4 structures, adopts traditional formwork mode to execute in reality and encircles 4, and the cover encircles 4 for the reinforced concrete layer of doing in two lining structure 41's outer lane, and reinforced concrete layer's thickness can be selected as required and design, simultaneously the utility model discloses well reinforced concrete layer cross-section is the arch, is equipped with two lining structure 41 in reinforced concrete layer inboard in addition, relies on the cover to encircle 4 bearing capacity, makes its inside pile foundation 1 in tunnel arrange the tunnel in and just prop up, cover on encircleing 4 to accomplish the conversion of power.
A pile foundation 1 breaking method based on a supporting structure for breaking a pile foundation 1, wherein the pile foundation 1 breaking method comprises the following steps:
(1) determining the breaking position of the pile foundation 1;
(2) 1/3 of the transverse width of the position of the selected pile foundation 1 is firstly broken; after the part of the pile foundation 1 is broken, quickly erecting a transverse support and a vertical support at the broken position;
(3) after the step (2) is finished, selecting the position of the selected pile foundation 1 again, and then breaking 1/2 of the width of the residual pile foundation 1; after the breaking, quickly erecting a transverse support and a vertical support at the breaking position;
(4) after the step (3) is finished, selecting the position of the selected pile foundation 1 again, then breaking the residual pile foundation 1, and quickly erecting a transverse support and a vertical support at the breaking position after breaking;
(5) after the step (4) is finished, constructing a cover arch 4;
(6) and (5) after the step (5) is finished, removing the steel pipe after the strength of the set arch 4 meets the requirement.
The utility model discloses well pile foundation 1 breaks at every turn and accounts for a little change than can, specifically can confirm as required.
Preferably, the pile foundation 1 of the utility model comprises pile foundation reinforcing steel bars 11, the pile foundation reinforcing steel bars 11 are of an inherent structure, the utility model discloses require to keep 05M-1.5M pile foundation reinforcing steel bars 11 when carrying out the demolition of pile foundation 1, here length is calculated from pile foundation 1 section, the specific retention length is selected as required; namely, each section of the pile foundation 1 is provided with a protruded pile foundation steel bar 11, and the section of the pile foundation 1 which is not broken at the upper part or the lower part is conveniently connected with the grid steel frame 2 by the section of the pile foundation 11; therefore, the integrity between the grid steel frame 2 and the pile foundation 1 can be better ensured.
Preferably, when the pile foundation 1 is broken, the exposed size of the pile foundation steel bar 11 is required to be not less than the thickness of the transverse support; by the arrangement, the contact area between the pile foundation reinforcing steel bar 11 and the transverse support can be increased, and the connection stability between the pile foundation reinforcing steel bar 11 and the transverse support can be increased, in addition, the utility model requires that the pile foundation reinforcing steel bar 11 passes through the transverse support arrangement, so that the pile foundation reinforcing steel bar 11 in the utility model is also positioned in a subsequent reinforced concrete layer, and the connection relation between the cover arch 4 and the upper pile foundation 1 is ensured; so that the cover arch 4 can better support the upper pile foundation 1.
Preferably, in the utility model, the pile foundation steel bars 11 are fixedly connected with the adjacent grid steel frame 2; the pile foundation steel bars 11 penetrate through the end parts of the grid steel frames 2 to be bent, and the bent end parts of the pile foundation steel bars 11 are attached to the lower end surfaces of the grid steel frames 2; after the pile foundation steel bars 11 are bent, the end parts of the pile foundation steel bars 11 are in a barb shape, so that the pile foundation steel bars can be better connected with the grid steel frame 2; therefore, the connection tightness between the pile foundation steel bars 11 and the grid steel frame 2 is better ensured; meanwhile, the pile foundation reinforcing steel bars 11 are reinforcing steel bars in the original pile foundation 1, and no fastening part is required to be added externally, so that transverse support arrangement is facilitated.
Preferably, in the step (2), when the pile foundation 1 is to be broken, the breaking position in the step (2) is required to be located at the edge of the pile foundation 1 and is symmetrical to the breaking position of the pile foundation 1 in the step (1); due to the arrangement, the pile foundation 1 is more stable when being broken, and the problem that the pile foundation 1 is easy to stress and shift due to the traditional sequential broken positions is solved; the one-sided too high stress of the pile foundation 1 can be avoided to a greater extent.
Obviously the specific implementation of the present invention is not limited by the above-mentioned manner, and various insubstantial improvements made by the method concept and technical solution of the present invention are all within the protection scope of the present invention.
Claims (5)
1. A supporting structure for pile foundation breaking is characterized in that the supporting structure comprises a transverse support and a longitudinal support; the transverse support is attached to the end face of the pile foundation; the longitudinal support is connected with the transverse support.
2. The support structure for pile foundation removal of claim 1, wherein the lateral support comprises a grid steel frame; the longitudinal support comprises a support steel pipe; and the support steel pipe is fixedly connected with the grid steel frame.
3. The supporting structure for pile foundation breaking according to claim 2, wherein the grid steel frame is provided with a connecting steel plate, and the end of the supporting steel pipe is connected with the connecting steel plate.
4. The support structure for pile foundation demolition as claimed in claim 2, wherein the support steel pipes are connected with the grid steel frame by bolts.
5. The pile foundation demolition support structure of claim 1 wherein the support structure further comprises a replacement support portion; the replacement support comprises a cover arch; the cover arch comprises a reinforced concrete soil layer with an arch-shaped section; and a secondary lining structure for supporting is arranged on the reinforced concrete layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020865566.1U CN212405142U (en) | 2020-05-21 | 2020-05-21 | Supporting structure for pile foundation breaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020865566.1U CN212405142U (en) | 2020-05-21 | 2020-05-21 | Supporting structure for pile foundation breaking |
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| CN212405142U true CN212405142U (en) | 2021-01-26 |
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| CN202020865566.1U Active CN212405142U (en) | 2020-05-21 | 2020-05-21 | Supporting structure for pile foundation breaking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576420A (en) * | 2020-05-21 | 2020-08-25 | 中铁上海工程局集团有限公司 | Supporting structure for pile foundation breaking and breaking method based on supporting structure |
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2020
- 2020-05-21 CN CN202020865566.1U patent/CN212405142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576420A (en) * | 2020-05-21 | 2020-08-25 | 中铁上海工程局集团有限公司 | Supporting structure for pile foundation breaking and breaking method based on supporting structure |
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