CN211036997U - Supporting structure and supporting system - Google Patents
Supporting structure and supporting system Download PDFInfo
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- CN211036997U CN211036997U CN201921460434.4U CN201921460434U CN211036997U CN 211036997 U CN211036997 U CN 211036997U CN 201921460434 U CN201921460434 U CN 201921460434U CN 211036997 U CN211036997 U CN 211036997U
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Abstract
The utility model provides a supporting construction and supporting system, wherein, supporting construction includes first sheet pile structure, second sheet pile structure, third sheet pile structure, pile top support subassembly and shutoff structure, first sheet pile structure set up in the first side of linkage segment, second sheet pile structure set up in the second side of linkage segment, third sheet pile structure set up in the third side of linkage segment, pile top support subassembly set up in the top of linkage segment, first sheet pile structure second sheet pile structure and third sheet pile structure three respectively with subassembly fixed connection is supported on the pile top, shutoff structure fixed connection in second sheet pile is structural and be located the below of basis tie beam, with right the bottom space of basis tie beam carries out the shutoff. The utility model discloses a supporting construction can avoid the original structure of existing building to receive destruction, can guarantee the excavation supporting security again.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a supporting structure and a supporting system.
Background
Most of the existing foundation pits are generated by building underground spaces in a building. With the increase of urban transformation projects, projects of newly building underground spaces of existing buildings begin to appear, and foundation beams in the original structures of the existing buildings easily influence the support of newly built foundation pits. Especially in the construction engineering of newly-built indoor and outdoor foundation pits of the existing building, the curtain wall foundation beam and the steel structure foundation connecting beam are arranged at the connecting section between the newly-built indoor pit and the newly-built outdoor pit of the existing building, when the foundation pit is built by excavating earthwork outside the indoor and outdoor of the existing building, the original structures such as the curtain wall foundation beam and the steel structure foundation connecting beam of the connecting section of the newly-built indoor and outdoor foundation pit of the existing building are easily damaged, the situation that the existing foundation pit penetrates through the foundation beam by aiming at the newly-built indoor and outdoor foundation pit of the existing building in the existing engineering is less, and under the situation, a supporting structure which can ensure that the original structure is not damaged and the supporting safety of the newly-built indoor and outdoor foundation pits of the existing building is lacked.
Therefore, a supporting structure and a supporting system which can not damage the original structure of the existing building and can ensure the safety of the foundation pit support are urgently needed.
Disclosure of Invention
The first purpose of the invention is to provide a supporting structure which can prevent the original structure of the existing building from being damaged and can ensure the safety of foundation pit supporting.
The second purpose of the invention is to provide a supporting system which can prevent the original structure of the existing building from being damaged and can ensure the safety of foundation pit supporting.
In order to achieve the first object, the invention provides a supporting structure for supporting a connecting section, a foundation beam and a foundation connecting beam between newly-built foundation pits inside and outside a building room, wherein the connecting section is provided with a first side surface, a second side surface and a third side surface, the second side surface is connected between the first side surface and the third side surface, the foundation connecting beam penetrates through the second side surface, the supporting structure comprises a first sheet pile structure, a second sheet pile structure, a third sheet pile structure, a pile top supporting component and a plugging structure, the first sheet pile structure is arranged on the first side surface of the connecting section, the second sheet pile structure is arranged on the second side surface of the connecting section, the third sheet pile structure is arranged on the third side surface of the connecting section, the pile top supporting component is arranged at the top of the connecting section, the first sheet pile structure, the second sheet pile structure and the third sheet pile structure are arranged on the third side surface of the connecting section, the first, The second sheet pile structure and the third sheet pile structure are respectively and fixedly connected with the pile top supporting assembly, and the plugging structure is fixedly connected to the second sheet pile structure and located below the foundation connecting beam so as to plug the space below the foundation connecting beam.
Compared with the prior art, the supporting structure provided by the invention has the advantages that the first sheet pile structure, the second sheet pile structure and the third sheet pile structure are correspondingly arranged on the first side surface, the second side surface and the third side surface of the connecting section which are exposed outside so as to resist the soil pressure in the horizontal direction, the first sheet pile structure, the second sheet pile structure and the third sheet pile structure are fixedly positioned through the pile top supporting assembly, and meanwhile, the supporting seat can be lifted up on the outer edge of the top of the supporting connecting section, so that the supporting safety of the soil body of the connecting section is ensured, the plugging structure is arranged below the foundation connecting beam, so that the space below the foundation connecting beam is plugged, the collapse of the soil on the second side surface of the connecting section due to excavation of the soil below the foundation connecting beam is avoided, and the damage to the original structure of the existing building is avoided. Therefore, the supporting structure can avoid the damage to the original structure of the existing building and ensure the safety of foundation pit supporting; in addition, the first sheet pile structure, the second sheet pile structure, the third sheet pile structure, the pile top supporting assembly and the blocking structure can be constructed in an assembly mode, construction is simple and convenient, construction speed is high, construction cost and construction period of the foundation pit are greatly reduced, good economic and social benefits are achieved, recycling is achieved, and the green environmental protection concept is better practiced.
Preferably, the first sheet pile structure includes a plurality of first steel sheet piles, each of the first steel sheet piles is vertically disposed on the first side surface, and the first steel sheet piles are sequentially connected to each other.
Preferably, the second sheet pile structure includes a plurality of second steel sheet piles, each of the second steel sheet piles is vertically disposed on the second side surface, and the second steel sheet piles are sequentially connected to each other.
Preferably, the third plate pile structure includes a plurality of third steel plate piles, each of the third steel plate piles is vertically disposed on the third side surface, and the third steel plate piles are sequentially connected to each other.
Preferably, the pile top supporting assembly includes a first coupling beam, a second coupling beam, and an enclosing purlin, the first coupling beam is fixedly connected to the first sheet pile structure, the first coupling beam is disposed along a top edge of the first side surface, the second coupling beam is fixedly connected to the third sheet pile structure, the second coupling beam is disposed along a top edge of the third side surface, the enclosing purlin is fixedly connected to the second sheet pile structure, and the enclosing purlin is disposed along a top edge of the second side surface.
Preferably, the pile top supporting assembly further comprises a plurality of tie rods, and each tie rod is connected between the first connecting beam and the second connecting beam.
Preferably, each of the tie-rods is disposed at equal intervals.
Preferably, the blocking structure comprises a plurality of blocking pieces, the blocking pieces are sequentially connected in a clinging manner along the upper direction and the lower direction and are located below the foundation connecting beam, and two ends of each blocking piece are fixedly connected with the second sheet pile structures respectively.
Preferably, the plugging piece at the top is tightly attached to the bottom of the basic connecting beam.
In order to achieve the second object, the invention provides a supporting system, which comprises two opposite supporting pieces and the supporting structure, wherein the opposite supporting pieces are connected between the two pile top supporting assemblies.
Compared with the prior art, the support system of the invention supports two opposite connecting sections between newly-built foundation pits inside and outside the existing building room by connecting two support structures through the support piece, because the support structure is used for resisting the soil pressure in the horizontal direction by correspondingly arranging the first sheet pile structure, the second sheet pile structure and the third sheet pile structure on the first side surface, the second side surface and the third side surface which are exposed outside the connecting sections, and then fixedly positioning the first sheet pile structure, the second sheet pile structure and the third sheet pile structure through the pile top support component, and simultaneously lifting a support seat on the outer edge of the top of the support connecting section, thereby ensuring the support safety of soil body of the connecting section, and plugging the space under the foundation connecting beam by arranging the plugging structure under the foundation connecting beam, avoiding collapse of the soil body on the second side surface of the connecting section caused by digging the soil body under the bottom of the foundation connecting beam, thereby avoiding the original structure of the existing building from being damaged. Therefore, the supporting system can avoid the damage to the original structure of the existing building and ensure the safety of foundation pit supporting; in addition, the first sheet pile structure, the second sheet pile structure, the third sheet pile structure, the pile top supporting assembly and the blocking structure can be constructed in an assembly mode, construction is simple and convenient, construction speed is high, construction cost and construction period of the foundation pit are greatly reduced, good economic and social benefits are achieved, recycling is achieved, and the green environmental protection concept is better practiced.
Preferably, the supporting pieces are I-shaped steel or steel pipes.
Drawings
Fig. 1 is a schematic perspective view of a supporting system of the present invention for supporting a connecting section between newly-built foundation pits indoors and outdoors in a building.
Fig. 2 is a schematic perspective view of the supporting structure of the present invention supporting one of the connecting sections.
Fig. 3 is a perspective view of the support structure of fig. 2 at another angle relative to one of the connecting sections.
Figure 4 is a schematic view of the construction of the pile top support assembly of the support structure of the present invention.
Fig. 5 is a schematic view of a plugging structure of the supporting structure of the present invention.
Detailed Description
In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.
Referring to fig. 1 to 3, the supporting system 200 of the present invention is used for supporting a connection section 500 between indoor and outdoor new foundation pits of a building, a foundation beam 600 and a foundation connection beam 700, wherein the connection section 500 has a first side 501, a second side 502 and a third side 503, the second side 502 is connected between the first side 501 and the third side 503, the foundation connection beam 700 is inserted through the second side 502, two connection sections 500 are provided between the indoor new foundation pit 300 and the outdoor new foundation pit 400 of the building, the two connection sections 500 are oppositely distributed, and a communication space for communicating the indoor new foundation pit 300 and the outdoor new foundation pit 400 is provided between the two connection sections 500. The supporting system 200 comprises two supporting pieces 6 and two supporting structures 100, and the two supporting structures 100 correspondingly support the two connecting sections 500; the supporting structure 100 comprises a first sheet pile structure 1, a second sheet pile structure 2, a third sheet pile structure 3, a pile top supporting component 4 and a blocking structure 5, the first sheet pile structure 1 is arranged on a first side surface 501 of a connecting section 500, the second sheet pile structure 2 is arranged on a second side surface 502 of the connecting section 500, the third sheet pile structure 3 is arranged on a third side surface 503 of the connecting section 500, the pile top supporting component 4 is arranged on the top of the connecting section 500, the first sheet pile structure 1, the second sheet pile structure 2 and the third sheet pile structure 3 are respectively and fixedly connected with the pile top supporting component 4, and the blocking structure 5 is fixedly connected to the second sheet pile structure 2 and located below a foundation connecting beam 700 so as to block the space below the foundation connecting beam 700; the supporting pieces 6 are connected between the two pile top supporting assemblies 4, and the number of the supporting pieces 6 may be multiple, so as to ensure the connection stability of the two supporting structures 100, and thus ensure the stability of the supporting system 200, and specifically, the supporting pieces 6 may be i-shaped steel or steel pipes. The fixing connection mode may be a welding mode, but not limited to this, and may also be a bolt fixing mode. More specifically, the following:
referring to fig. 2 and 3, in the present embodiment, the first sheet pile structure 1 includes a plurality of first steel sheet piles 11, each first steel sheet pile 11 is vertically disposed on the first side surface 501, and the first steel sheet piles 11 are connected in sequence; the second sheet pile structure 2 comprises a plurality of second steel sheet piles 21, each second steel sheet pile 21 is vertically arranged on the second side surface 502, and the second steel sheet piles 21 are sequentially connected; the third plate pile structure 3 includes a plurality of third steel plate piles 31, each third steel plate pile 31 is vertically disposed on the third side 503, and each third steel plate pile 31 is connected in sequence. The first steel sheet pile 11, the second steel sheet pile 21, and the third steel sheet pile 31 may be conventional larsen steel sheet piles, but are not limited thereto. It should be noted that in other embodiments, the first sheet pile structure 1, the second sheet pile structure 2 and the third sheet pile structure 3 may also adopt other sheet piles, such as wooden sheet piles.
Referring to fig. 2 and 4, the pile top supporting assembly 4 includes a first coupling beam 41, a second coupling beam 42, and a surrounding purlin 43, the first coupling beam 41 is fixedly connected to the first sheet pile structure 1, the first coupling beam 41 is disposed along a top edge of the first side surface 501, the second coupling beam 42 is fixedly connected to the third sheet pile structure 3, the second coupling beam 42 is disposed along a top edge of the third side surface 503, the surrounding purlin 43 is fixedly connected to the second sheet pile structure 2, the surrounding purlin 43 is disposed along a top edge of the second side surface 502, and the surrounding purlin 43 can fix the second sheet pile structure 2 and transmit load. Specifically, the first coupling beam 41 and the second coupling beam 42 may be a channel steel coupling beam, and the purlin 43 may be an existing HW profile steel, but not limited thereto. Further, the pile top supporting assembly 4 further comprises a plurality of tie rods 44, and each pair of tie rods 44 is connected between the first connecting beam 41 and the second connecting beam 42. Through setting up the tie rod 44 to improve the steadiness that first even roof beam 41, second even roof beam 42 and enclose purlin 43 three connect. Specifically, each pair of tie rods 44 is arranged at equal intervals, so as to ensure stress balance. The tie bar 44 may be an existing channel steel tie bar, but not limited thereto; the connection manner of the tie rod 44 and the first connecting beam 41 and the connection manner of the tie rod 44 and the second connecting beam 42 can adopt the conventional welding and fixing manner, but not limited thereto.
Referring to fig. 2 and 5, in the present embodiment, the blocking structure 5 includes a plurality of blocking pieces 51, each blocking piece 51 is sequentially and tightly connected along the up and down direction and is located below the foundation connecting beam 700, and two ends of each blocking piece 51 are respectively and fixedly connected to the second sheet pile structure 2. The plugging pieces 51 are sequentially and tightly connected below the basic connecting beam 700 along the upper and lower directions, so that the space below the bottom of the basic connecting beam 700 is plugged, the collapse of earthwork of the second side surface 502 of the connecting section 500 caused by the excavation of the earthwork below the basic connecting beam 700 is avoided, and the damage to the original structure of the existing building is further avoided. Specifically, the plugging member 51 at the top is closely attached to the bottom of the basic connection beam 700, and fully plugs the entire space under the basic connection beam 700, thereby further improving safety.
Referring to fig. 1 to 5, the method for supporting the connection section 500 of the internal and external foundation pits of the existing building according to the present invention includes the following steps:
s1, providing a first sheet pile structure 1, a second sheet pile structure 2, a third sheet pile structure 3, a first connecting beam 41, a second connecting beam 42, a surrounding purlin 43 and a plurality of plugging pieces 51, determining the positions of a foundation beam 600 and a foundation connecting beam 700 of an existing building, excavating earthwork to a preset distance below the bottom surface of the foundation beam 600, setting a construction paying-off position, installing a guide frame according to the construction paying-off position, arranging the first sheet pile structure 1 on a first side surface 501 of two connecting sections 500, arranging the second sheet pile structure 2 on a second side surface 502 of the two connecting sections 500, and arranging the third sheet pile structure 3 on a third side surface 503 of the two connecting sections 500;
s2, fixedly connecting the first connecting beam 41 to the first sheet pile structure 1, disposing the first connecting beam 41 at the top edge positions of the two first side surfaces 501, fixedly connecting the second connecting beam 42 to the third sheet pile structure 3, disposing the second connecting beam 42 at the top edge positions of the two third side surfaces 503, fixedly connecting the purlin 43 to the second sheet pile structure 2, and disposing the purlin 43 at the top edge positions of the two second side surfaces 502, thereby forming the pile top supporting assembly 4 for supporting the top of the connecting section 500; excavating a through groove between the foundation beam 600 and the foundation connecting beam 700, penetrating a plurality of tie rods 44 through the through groove and respectively connecting the tie rods to the space between the first connecting beam 41 and the second connecting beam 42, and arranging the tie rods 44 at equal intervals;
s3, connecting the counter-bracing piece 6 with the two surrounding purlins 43; cleaning earthwork on the top of the slope, and spraying plain concrete with the thickness of 100 mm on the top of the slope for protection;
s4, excavating earthwork layer by layer, wherein the height of each layer is not more than 1 m;
s5, after excavating to the bottom of the foundation connecting beam 700, disposing one of the plugging pieces 51 below the foundation connecting beam 700, and fixedly connecting two ends of the plugging piece 51 to the second sheet pile structure 2 to plug the bottom space of the foundation connecting beam 700;
and S6, with the earth excavation continuing, fixedly connecting the rest plugging pieces 51 to the second sheet pile structure 2 from top to bottom, and closely arranging the two plugging pieces 51 which are adjacent to each other up and down so as to continue plugging the bottom space of the foundation connecting beam 700.
Wherein the overlapping length between the blocking piece 51 and the second sheet pile structure 2 in S5 and S6 ranges from 200 mm to 300 mm.
In summary, in the present invention, the first sheet pile structure 1, the second sheet pile structure 2, and the third sheet pile structure 3 are correspondingly disposed on the first side 501, the second side 502, and the third side 503 of the connection section 500, which are exposed to the outside, so as to resist the soil pressure in the horizontal direction, and then the first sheet pile structure 1, the second sheet pile structure 2, and the third sheet pile structure 3 are fixed and positioned by the pile top supporting assembly 4, and meanwhile, a supporting seat can be raised on the top outer edge of the supporting connection section 500, so as to ensure the supporting safety of the connection section 500, and the plugging structure 5 is disposed below the foundation connection beam 700, so as to plug the space below the foundation connection beam 700, so as to prevent the soil below the foundation connection beam 700 from being excavated and causing the soil on the second side 502 of the connection section 500 to collapse, thereby preventing the original structure of the existing building from being damaged. Therefore, the supporting structure 100 of the present invention can prevent the original structure of the existing building from being damaged, and can ensure the safety of the foundation pit support; in addition, the first sheet pile structure 1, the second sheet pile structure 2, the third sheet pile structure 3, the pile top supporting assembly 4 and the blocking structure 5 can be constructed in an assembly mode, construction is simple and convenient, construction speed is high, construction cost and construction period of the foundation pit are greatly reduced, good economic and social benefits are achieved, recycling is achieved, and the concept of green environmental protection is better practiced.
The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.
Claims (11)
1. A supporting structure is used for supporting a connecting section, a foundation beam and a foundation connecting beam between newly-built foundation pits indoors and outdoors of a building, the connecting section is provided with a first side surface, a second side surface and a third side surface, the second side surface is connected between the first side surface and the third side surface, the foundation connecting beam is arranged on the second side surface in a penetrating way, the supporting structure is characterized by comprising a first sheet pile structure, a second sheet pile structure, a third sheet pile structure, a pile top supporting component and a plugging structure, the first sheet pile structure is arranged on the first side surface of the connecting section, the second sheet pile structure is arranged on the second side surface of the connecting section, the third sheet pile structure is arranged on the third side surface of the connecting section, the pile top supporting component is arranged on the top of the connecting section, and the first sheet pile structure, the second sheet pile structure and the third sheet pile structure are respectively and fixedly connected with the pile top supporting component, the blocking structure is fixedly connected to the second sheet pile structure and located below the foundation connecting beam so as to block the space below the foundation connecting beam.
2. The supporting structure of claim 1, wherein the first sheet pile structure comprises a plurality of first steel sheet piles, each first steel sheet pile is vertically arranged on the first side face, and the first steel sheet piles are connected in sequence.
3. The supporting structure of claim 1, wherein the second sheet pile structure comprises a plurality of second steel sheet piles, each second steel sheet pile is vertically arranged on the second side face, and the second steel sheet piles are connected in sequence.
4. The supporting structure of claim 1, wherein the third sheet pile structure comprises a plurality of third sheet piles, each third sheet pile is vertically arranged on the third side surface, and the third sheet piles are connected in sequence.
5. The supporting structure of claim 1, wherein the pile top supporting assembly comprises a first connecting beam, a second connecting beam and a surrounding purlin, the first connecting beam is fixedly connected with the first sheet pile structure, the first connecting beam is arranged along the top edge of the first side surface, the second connecting beam is fixedly connected with the third sheet pile structure, the second connecting beam is arranged along the top edge of the third side surface, the surrounding purlin is fixedly connected with the second sheet pile structure, and the surrounding purlin is arranged along the top edge of the second side surface.
6. The support structure of claim 5, wherein the pile top support assembly further comprises a plurality of tie-rods, each tie-rod being connected between the first and second connecting beams.
7. The support structure of claim 6, wherein each of the tie-rods is equally spaced.
8. The supporting structure according to claim 1, wherein the blocking structure comprises a plurality of blocking pieces, the blocking pieces are sequentially and tightly connected along the upper direction and the lower direction and are positioned below the foundation connecting beam, and two ends of each blocking piece are fixedly connected with the second sheet pile structures respectively.
9. The support structure of claim 8, wherein the top closure is affixed to the bottom of the foundation tie beam.
10. A support system including two counter-bracing members and a support structure according to any one of claims 1 to 9, the counter-bracing members being connected between two of said pile top support assemblies.
11. The support system of claim 10, wherein the counter-stay is an i-steel or steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460434.4U CN211036997U (en) | 2019-09-03 | 2019-09-03 | Supporting structure and supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460434.4U CN211036997U (en) | 2019-09-03 | 2019-09-03 | Supporting structure and supporting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211036997U true CN211036997U (en) | 2020-07-17 |
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ID=71540357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921460434.4U Active CN211036997U (en) | 2019-09-03 | 2019-09-03 | Supporting structure and supporting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211036997U (en) |
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2019
- 2019-09-03 CN CN201921460434.4U patent/CN211036997U/en active Active
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