CN219547813U - Enclosing purlin shearing-resistant piece suitable for front-support grouting steel pipe foundation pit supporting system - Google Patents
Enclosing purlin shearing-resistant piece suitable for front-support grouting steel pipe foundation pit supporting system Download PDFInfo
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- CN219547813U CN219547813U CN202320080186.0U CN202320080186U CN219547813U CN 219547813 U CN219547813 U CN 219547813U CN 202320080186 U CN202320080186 U CN 202320080186U CN 219547813 U CN219547813 U CN 219547813U
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Abstract
The utility model relates to an enclosing purlin shear-resistant piece suitable for a front-support grouting steel pipe foundation pit supporting system, which comprises a front-side embedded steel plate (11), a shear-resistant rib plate (12), an upper embedded steel plate (13), a vertical shear-resistant member (14) and an embedded shear-resistant member (15); the front side embedded steel plate (11) and the shearing rib plate (12) are arranged on the front side of the foundation pit periphery purlin system (2), the upper embedded steel plate (13) and the vertical shearing member (14) are arranged on the upper portion of the foundation pit periphery purlin system (2), and the embedded shearing member (15) is embedded in the foundation pit periphery purlin system (2) and is connected with the front side embedded steel plate (11) and the upper embedded steel plate (13). Compared with the prior art, the utility model has the advantages of good safety, high construction speed, good economy and the like.
Description
Technical Field
The utility model relates to the technical field of civil engineering, in particular to an enclosing purlin shear-resistant member suitable for a front-support grouting steel pipe foundation pit supporting system.
Background
In the current foundation pit supporting system, when the SMW construction method pile is combined with the front support grouting steel pipe, the following problems exist:
firstly, a front support grouting steel pipe and a middle-sized steel member of the SMW construction method pile need to penetrate through a reinforced concrete enclosing purlin, one end of the front support steel pipe needs to stretch into the reinforced concrete enclosing purlin, and in order to facilitate later-stage steel recycling, the outer side of the steel section can be wrapped with a layer of isolation layer, so that the pouring quality of the reinforced concrete and the arrangement of steel bars are affected, and the integrity of the enclosing purlin is affected.
Secondly, the front supporting steel pipe enters the surrounding purlin area to be a concentrated stress area, and because the integrity of the surrounding purlin is weakened, the shearing resistance of the surrounding purlin is insufficient, the local shearing damage of the surrounding purlin can occur, and the problems that the construction is difficult and the shearing steel bars are easy to miss exist in the current method of welding the shearing steel bars around the steel pipe are solved.
In addition, as the front support steel pipes are obliquely arranged, upward lifting force can be generated along with excavation of the foundation pit, so that upward lifting displacement of the enclosing purlin is generated, and the safety of the foundation pit is affected; on the other hand, the surrounding purlin is vertical and is generally provided with structural reinforcing bars, the bearing capacity is lower, and when the lifting force is larger, the surrounding purlin is easy to damage.
Disclosure of Invention
The utility model aims to provide a shearing-resistant member for an enclosing purlin of a front-support grouting steel pipe foundation pit supporting system, which is used for enhancing the shearing-resistant bearing capacity of the enclosing purlin system and enhancing the safety of a supporting structure.
The aim of the utility model can be achieved by the following technical scheme: an enclosing purlin shear-resistant member suitable for a front-support grouting steel pipe foundation pit supporting system comprises a front-side embedded steel plate, a shear-resistant rib plate, an upper embedded steel plate, a vertical shear-resistant member and an embedded shear-resistant member;
the front embedded steel plate and the shearing rib plate are arranged on the front side of the purlin system on the periphery of the foundation pit, the upper embedded steel plate and the vertical shearing member are arranged on the upper part of the purlin system on the periphery of the foundation pit, and the embedded shearing member is embedded in the purlin system on the periphery of the foundation pit and is connected with the front embedded steel plate and the upper embedded steel plate.
Preferably, the shape of the bottom of the front embedded steel plate is attached to a front supporting type steel pipe system in the foundation pit, and is connected with a purlin system at the periphery of the foundation pit through an embedded shear member by adopting welding or other reliable modes.
Preferably, one end of the shearing rib plate is attached to and welded with the front embedded steel plate, and the other end of the shearing rib plate is attached to and welded with the front supporting type steel pipe system in the foundation pit.
Preferably, the front pre-buried steel plate and the shearing rib plate are made of steel materials.
Preferably, the upper embedded steel plate is made of steel, one end of the upper embedded steel plate is welded or connected with the front embedded steel plate in other reliable modes, and the other end of the upper embedded steel plate is welded with a profile steel flange in the SMW construction method and is connected with a purlin system at the periphery of the foundation pit through an embedded shear member.
Preferably, the vertical shearing resistant member is made of steel, is connected with the upper embedded steel plate through welding or other reliable modes, and is welded with a section steel flange in the SMW construction method.
Preferably, the pre-buried shearing resistant member is made of steel, and can be ribbed steel bars and other stiff members.
Preferably, the front support type grouting steel pipe foundation pit supporting system comprises an enclosing purlin shear part, a foundation pit peripheral purlin system, a foundation pit inner front support type steel pipe system and a foundation pit outer supporting pile system;
the foundation pit outer support pile system is connected into a whole through the foundation pit outer purlin system, the foundation pit inner front support type steel pipe system is connected into a whole through the foundation pit outer purlin system and the foundation pit outer support pile system, the foundation pit outer purlin system and the foundation pit inner front support type steel pipe system are connected into a whole through the enclosing purlin shear-resistant member. The enclosing purlin shear resistant member system comprises a horizontal shear resistant member and a vertical shear resistant member.
Further preferably, the foundation pit outer support pile system comprises a soil retaining system and a water retaining system, and comprises an SMW construction method system or a PC construction method combined pile system.
Preferably, the SMW construction method system is a foundation pit supporting process form of cement-soil mixing pile inserted section steel, and the PC construction method combined pile system is a system combining a steel pipe pile and a steel sheet pile.
Further preferably, the purlin system at the periphery of the foundation pit is a stressed member arranged at the top of the support pile system outside the foundation pit, and is a reinforced concrete structure. The enclosing purlin system of the support pile top and the front support type steel pipe top is a reinforced concrete structure.
Further preferably, one end of the foundation pit inner front support type steel pipe system is arranged in the surrounding purlin and between the support piles, the other end of the foundation pit inner front support type steel pipe system is positioned in the soil body, the included angle between the foundation pit inner front support type steel pipe system and the horizontal plane is 30-75 degrees, and grouting is carried out in the steel pipe. The front support type steel pipe system in the foundation pit comprises a steel pipe and cement slurry in the steel pipe, and the bearing capacity is improved in the steel pipe through grouting.
Compared with the prior art, the utility model has the following advantages:
1. the utility model is based on that shear members are arranged in the SMW construction method and the front support grouting steel pipe system, and the concentrated force transmitted from the steel pipe to the surrounding purlin system is changed into uniform force through the shear members, so that the shear bearing capacity of the surrounding purlin system can be effectively enhanced, and the safety of the supporting structure is enhanced;
2. the utility model is based on arranging the shearing resistant member in the SMW construction method and the front support grouting steel pipe system, and connecting the section steel, the concrete enclosing purlin and the front support steel pipe into a whole, thereby effectively enhancing the lifting resistance of the enclosing purlin system, improving the vertical bearing capacity of the enclosing purlin, enhancing the safety of the supporting structure, being convenient for construction and recycling part of the structure;
3. according to the utility model, through the cooperation arrangement of the front embedded steel plate, the shearing rib plate, the upper embedded steel plate, the vertical shearing component and the embedded shearing component, the horizontal shearing performance and the vertical shearing performance of the enclosing purlin system can be improved, the possibility of local shearing damage of the enclosing purlin is reduced, shearing steel bars are not required to be welded around the steel pipe, and the construction is convenient;
4. according to the steel plate embedded part, the steel plate embedded part is additionally arranged at the joint of the enclosing purlin and the steel pipe, so that the integrity of the enclosing purlin is improved.
Drawings
FIG. 1 is a side view of a front-bracing grouting steel pipe foundation pit support system with an enclosing purlin shear resistant member of the present utility model;
FIG. 2 is a front view of a shoring grouting steel tubular foundation pit support system incorporating purlin shear resistant members of the present utility model;
FIG. 3 is a top view of a front-bracing grouting steel pipe foundation pit support system of the present utility model with purlin-containing shear elements;
FIG. 4 is a front view of an enclosure purlin shear resistant member of the present utility model adapted for use in a front-braced grouting steel foundation pit support system;
FIG. 5 is a top view of an enclosure purlin shear resistant member of the present utility model adapted for use in a front-braced grouting steel foundation pit support system;
FIG. 6 is a side view of an enclosure purlin shear resistant member of the present utility model adapted for use in a front-end grouted steel foundation pit support system;
in the figure: the foundation pit outer support pile comprises a 1-enclosing purlin shearing resistant part, a 11-front side embedded steel plate, a 12-shearing resistant rib plate, a 13-upper embedded steel plate, a 14-vertical shearing resistant member, a 15-embedded shearing resistant member, a 2-foundation pit outer purlin system, a 3-foundation pit inner front support type steel pipe system and a 4-foundation pit outer support pile system.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples.
Example 1
The utility model provides a enclosing purlin shear resistant piece suitable for front support formula slip casting steel pipe foundation ditch support system, foundation ditch support system is SMW worker method stake and front support formula slip casting steel pipe combination's foundation ditch support system. As shown in fig. 1 to 3, the foundation pit supporting system comprises an enclosing purlin shear member 1, a foundation pit peripheral purlin system 2, a foundation pit inner front support type steel pipe system 3 and a foundation pit outer supporting pile system 4.
As shown in fig. 4 to 6, the enclosing purlin shear element 1 includes a front pre-buried steel plate 11, a shear rib plate 12, an upper pre-buried steel plate 13, a vertical shear member 14 and a pre-buried shear member 15. The front side of the purlin system 2 at the periphery of the foundation pit is provided with a front side embedded steel plate 11 and a shearing rib plate 12, the upper part is provided with an upper embedded steel plate 13 and a vertical shearing resistant member 14, an embedded shearing resistant member 15 is arranged inside the foundation pit, and the embedded shearing resistant member 15 is connected with the front side embedded steel plate 11 and the upper embedded steel plate 13.
Example 2
An enclosing purlin shear-resistant member suitable for a front support type grouting steel pipe foundation pit supporting system. The front side embedded steel plate 11 is vertically arranged, the bottom is connected with the front support type steel pipe system 3 in the foundation pit in a fitting way, and is connected with the peripheral purlin system 2 of the foundation pit through the embedded shear member 15 which is transversely arranged. One end of the shearing rib plate 12 is attached to and welded with the front embedded steel plate 11, and the other end is attached to and welded with the front supporting type steel pipe system 3 in the foundation pit. The upper embedded steel plate 13 is transversely arranged, one end of the upper embedded steel plate is connected with the front embedded steel plate 11, the other end of the upper embedded steel plate is welded with a profile steel flange in the SMW construction method, and the upper embedded steel plate is connected with the foundation pit peripheral purlin system 2 through the vertically arranged embedded shear member 15. The vertical shearing resistant member 14 is vertically arranged and is vertically connected with the upper embedded steel plate 13 and welded with the flange of the section steel in the SMW construction method. The remainder was the same as in example 1.
Example 3
The front support type grouting steel pipe foundation pit supporting system comprises a foundation pit outer supporting pile system 4, a foundation pit outer purlin system 2, a foundation pit inner front support type steel pipe system 3 and an enclosing purlin shear-resistant piece 1.
The foundation pit outer supporting pile system 4 is connected with the foundation pit outer purlin system 2 arranged at the upper part of the supporting pile through the outer part of the foundation pit into a whole; the foundation pit inner front support type steel pipe system 3 is connected with the foundation pit outer support pile system 4 into a whole through the foundation pit outer purlin system 2 at the top of the steel pipe; the enclosing purlin shear member 1 connects the foundation pit outer support pile system 4, the foundation pit outer purlin system 2 and the foundation pit inner front support type steel pipe system 3 into a whole.
The enclosing purlin shear member 1 is composed of a front embedded steel plate 11 and a shear rib plate 12 which are arranged at the front side of a foundation pit peripheral purlin system 2, an upper embedded steel plate 13 and a vertical shear member 14 which are arranged at the upper part of the foundation pit peripheral purlin system, and an embedded shear member 15 which is embedded in the foundation pit peripheral purlin system 2 and is connected with the front embedded steel plate 11 and the upper embedded steel plate 13.
In this embodiment, a construction process of a front support type grouting steel pipe foundation pit supporting system includes:
the first step: constructing an outer supporting pile system 4 of the foundation pit and an inner front supporting type steel pipe system 3 of the foundation pit;
and a second step of: constructing a foundation pit peripheral purlin system 2, simultaneously arranging an assembly of a front embedded steel plate 11, an embedded shear member 15 and a shear rib plate 12 on the front side of the foundation pit peripheral purlin system 2, arranging an assembly of an upper embedded steel plate 13, a vertical shear member 14 and an embedded shear member 15 on the upper part of the peripheral purlin, and welding and connecting the two assemblies;
and a third step of: welding section steel in the foundation pit outer support pile system 4, an upper embedded steel plate 13 and a vertical shear member 14, and pouring a purlin system 2 around the foundation pit;
fourth step: excavating foundation pit earthwork and constructing an underground structure;
fifth step: and backfilling the foundation pit.
The utility model has the advantages of good safety, high construction speed and good economy.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. The enclosing purlin shear-resistant member suitable for the front-support grouting steel pipe foundation pit supporting system is characterized by comprising a front-side embedded steel plate (11), a shear-resistant rib plate (12), an upper embedded steel plate (13), a vertical shear-resistant member (14) and an embedded shear-resistant member (15);
the front side embedded steel plate (11) and the shearing rib plate (12) are arranged on the front side of the foundation pit periphery purlin system (2), the upper embedded steel plate (13) and the vertical shearing member (14) are arranged on the upper portion of the foundation pit periphery purlin system (2), and the embedded shearing member (15) is embedded in the foundation pit periphery purlin system (2) and is connected with the front side embedded steel plate (11) and the upper embedded steel plate (13).
2. The enclosing purlin shear-resistant member suitable for the front-support grouting steel pipe foundation pit supporting system according to claim 1, wherein the bottom of the front-side embedded steel plate (11) is in fit connection with the front-support steel pipe system (3) in the foundation pit, and is connected with the peripheral purlin system (2) of the foundation pit through an embedded shear-resistant member (15).
3. The enclosing purlin shear-resistant member suitable for a front-support grouting steel pipe foundation pit supporting system according to claim 1, wherein one end of the shear rib plate (12) is attached and welded with the front-side embedded steel plate (11), and the other end is attached and welded with the front-support steel pipe system (3) in the foundation pit.
4. The enclosing purlin shear-resistant member suitable for the front-support grouting steel pipe foundation pit supporting system according to claim 2, wherein one end of the upper embedded steel plate (13) is connected with the front embedded steel plate (11), and the other end is welded with a profile steel flange in the SMW construction method and is connected with the foundation pit peripheral purlin system (2) through the embedded shear-resistant member (15).
5. The enclosing purlin shear-resistant member suitable for the front-support grouting steel pipe foundation pit supporting system according to claim 1, wherein the vertical shear-resistant member (14) is connected with an upper embedded steel plate (13) and welded with a profile steel flange in the SMW construction method.
6. The enclosing purlin shear-resistant member suitable for a front-support grouting steel foundation pit support system according to claim 1, wherein the pre-buried shear-resistant member (15) comprises ribbed steel bars.
7. The enclosing purlin shear-resistant member suitable for the front-support grouting steel pipe foundation pit supporting system according to claim 1, wherein the front-support grouting steel pipe foundation pit supporting system comprises an enclosing purlin shear-resistant member (1), a foundation pit peripheral purlin system (2), a foundation pit inner front-support steel pipe system (3) and a foundation pit outer supporting pile system (4);
the foundation pit outer support pile system (4) is connected into a whole through the foundation pit outer purlin system (2), the foundation pit inner front support type steel pipe system (3) is connected into a whole through the foundation pit outer purlin system (2) and the foundation pit outer support pile system (4), and the enclosing purlin shear-resistant piece (1) is used for connecting the foundation pit outer support pile system (4), the foundation pit outer purlin system (2) and the foundation pit inner front support type steel pipe system (3) into a whole.
8. The enclosing purlin shear-resistant member suitable for the front-support grouting steel pipe foundation pit supporting system according to claim 7, wherein the foundation pit outer supporting pile system (4) comprises a soil retaining system and a water retaining system, and comprises an SMW construction method system or a PC construction method combined pile system.
9. The enclosing purlin shear resistant member suitable for the front support type grouting steel pipe foundation pit supporting system according to claim 7, wherein the foundation pit peripheral purlin system (2) is a stressed member arranged at the top of the foundation pit outer supporting pile system (4), and is of a reinforced concrete structure.
10. The shearing resistant member for the enclosing purlin suitable for the front support type grouting steel pipe foundation pit supporting system according to claim 7, wherein one end of the front support type steel pipe system (3) in the foundation pit is arranged in the peripheral purlin system (2) of the foundation pit and between the outer supporting pile systems (4) of the foundation pit, the other end is positioned in soil, the included angle between the outer supporting pile systems and the horizontal plane is 30-75 degrees, and grouting is carried out in the steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320080186.0U CN219547813U (en) | 2023-01-11 | 2023-01-11 | Enclosing purlin shearing-resistant piece suitable for front-support grouting steel pipe foundation pit supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320080186.0U CN219547813U (en) | 2023-01-11 | 2023-01-11 | Enclosing purlin shearing-resistant piece suitable for front-support grouting steel pipe foundation pit supporting system |
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| Publication Number | Publication Date |
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| CN219547813U true CN219547813U (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320080186.0U Active CN219547813U (en) | 2023-01-11 | 2023-01-11 | Enclosing purlin shearing-resistant piece suitable for front-support grouting steel pipe foundation pit supporting system |
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| CN (1) | CN219547813U (en) |
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2023
- 2023-01-11 CN CN202320080186.0U patent/CN219547813U/en active Active
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