CN209798847U - Structure for enhancing anti-floating capacity of underground construction/structure - Google Patents
Structure for enhancing anti-floating capacity of underground construction/structure Download PDFInfo
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- CN209798847U CN209798847U CN201920166133.4U CN201920166133U CN209798847U CN 209798847 U CN209798847 U CN 209798847U CN 201920166133 U CN201920166133 U CN 201920166133U CN 209798847 U CN209798847 U CN 209798847U
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Abstract
The utility model relates to a structure for enhancing anti-floating capability of underground construction/structures, which comprises an extra-ballast supporting structure and a connecting member; the extra-ballast supporting structure is a primary lining well wall and bottom sealing concrete which are constructed by adopting an inverted well wall method and have a supporting effect; the connecting component is a component for connecting the additional weight support structure and the main body structure into a whole, and the connecting component is divided into the following components according to the connecting mode: a compression connecting member, a tension connecting member and a shear connecting member; the additional weight supporting structure is firmly connected with the main structure through the connecting component, so that the total weight of the main structure is increased, and the anti-floating capacity of the main structure is improved. The utility model provides an anti structure of floating, guaranteed connecting elements's water-proof effects when the anti ability of floating of reinforcing has simple structure, safe firm, save the time limit for a project, save advantages such as cost.
Description
Technical Field
The utility model belongs to the technical field of building engineering, more specifically relates to a structure that is used for anti ability of floating of underground structure reinforcing.
background
Along with the continuous increase of underground building, anti floating problem is outstanding day by day, when adopting the underground construction of the wall of a well construction of hanging the wall of a well after dead weight and ballast and buoyancy effect value can not satisfy the anti stability factor that floats of the standard requirement, need take anti floating measure, traditional anti floating main measure: the construction cost is greatly increased and the construction period is prolonged by driving anti-floating piles or anti-floating anchor rods, increasing the top plate earth covering of the underground structure and increasing the weight bearing concrete of the underground structure.
Due to the above disadvantages, further improvement and improvement is needed in the art to design an economical and efficient anti-floating structure suitable for underground construction/structures, which meets the anti-floating and waterproof requirements.
Disclosure of Invention
The utility model discloses to above-mentioned current underground of adopting the construction of the wall of a well of hanging upside down build/structure anti not enough that floats the structure existence, propose one kind can satisfy waterproof requirement, and simple structure, safe firm, save the anti structure that floats of time limit for a project cost.
A structure for enhancing anti-floating capacity of underground construction/structures comprises an extra-ballast supporting structure and a connecting member, wherein the extra-ballast supporting structure is a primary lining well wall and bottom sealing concrete which are constructed by adopting an inverted well wall method and have supporting effect; the connecting component connects the additional weight support structure and the main structure into a whole component, and the connecting component is divided into the following components according to the connecting mode: the compression connecting member, the tension connecting member and the shear connecting member are characterized in that the compression connecting member, the tension connecting member and the shear connecting member meet the requirements of safety, sealing and water proofing of structures and easiness in construction, and the compression connecting member, the tension connecting member and the shear connecting member are reasonable in structure, easy to obtain materials, simple in process and the like. The additional weight supporting structure is firmly connected with the main structure through the connecting component, so that the total weight of the main structure is increased, and the anti-floating capacity of the main structure is improved.
Because a waterproof layer is arranged between the support and the main structure of the underground building/structure which is generally used for hanging the well wall upside down, the structures are not connected, and the anti-buoyancy force is provided only by the dead weight of the main structure. After the supporting construction and the major structure that will add the structure of encorbelmenting link to each other, promote the anti buoyancy of underground structure/structure, mainly increase: 1. the self weight of the soil body on the upper part of the cantilever structure; 2. the self weight of the supporting structure; 3. the frictional resistance of the soil shearing failure surface.
The extra ballast supporting structure can comprise an overhanging structure of the well wall, the section of the overhanging structure is rectangular, stepped or conical, the overhanging structure in the extra ballast supporting structure consists of one or more overhanging structures and is positioned in the middle and/or the bottom of the outer side of the primary lining well wall, and the overhanging structure is made of cast-in-place concrete or precast concrete.
The connecting members are divided into: a compression connecting member, a tension connecting member, and a shear connecting member.
The compression connecting component consists of a T-shaped locking notch beam and a step-shaped clamping groove on the side wall of the main body structure.
The tension connecting member connects the back cover concrete and the main structure bottom plate, the lower part of the connecting reinforcing steel bar is anchored on the back cover concrete, and the upper part reinforcing steel bar and the main structure bottom plate are poured into a whole.
The shear connection component connects the supporting structure well wall and the main structure side wall, one end of the connecting steel bar is anchored or implanted on the supporting structure well wall, and the other end of the steel bar and the main structure side wall are poured into a whole. The cantilever structure should check the shearing bearing capacity and the punching bearing capacity, and when the size of the bottom surface of the cantilever structure is less than or equal to the effective height of the cantilever structure, the shearing bearing capacity of the joint of the cantilever structure and the well wall should be checked; when the punching damaged cone body falls within the bottom surface of the foundation of the cantilever structure, the punching bearing capacity of the connecting part of the cantilever structure and the well wall and the variable step part of the cantilever structure is checked.
And an expansion water stop strip or water stop glue is arranged at the joint of the connecting steel bar and the concrete interface, and the anticorrosion treatment is well carried out.
The overhanging structure is arranged in a soil layer with self-stabilizing capability so as to ensure the stability of a soil body during excavation. The earth excavation of the overhanging structure is suitable for selecting the stratums suitable for excavation, such as clay layers, rock stratums and the like with certain self-stability.
A waterproof layer is arranged between the additional weight supporting structure and the main structure, and the waterproof layer is a closed whole and cannot have a gap causing leakage.
The utility model has the advantages that: compared with the prior art, the utility model provides an effective anti method of floating of underground structure of building that adopts the construction of the wall of a well of hanging upside down has simple structure, safe firm, saves the time limit for a project, saves advantages such as cost.
Drawings
In order to illustrate the implementation of the invention more clearly, the drawings that are needed for describing the embodiments or the existing products will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a schematic sectional view of a structure of an underground structure for enhancing anti-floating capability;
FIG. 2 is a schematic plan view (form one) of a structure for enhancing the anti-floating capability of the underground construction/structure;
FIG. 3 is a schematic plan view of a structure for enhancing anti-floating capability of an underground structure (form two);
FIG. 4 is a schematic diagram (form one) of a excavation location of a structure with enhanced anti-floating capability of an underground structure;
FIG. 5 is a schematic diagram (form two) of a structure excavation position of an underground construction/structure with enhanced anti-floating capability;
FIG. 6 is a schematic view of a conical cantilever structure for enhancing anti-floating capability of an underground structure;
FIG. 7 is a structural tension member for enhancing anti-floating ability of an underground structure/structure;
FIG. 8 is a structural compression member for enhancing the anti-floating ability of an underground structure;
Fig. 9 is a structural shear member for enhancing the anti-floating ability of an underground structure/structure.
description of reference numerals:
1-extra weight supporting structure, 2-main structure, 3-overhanging structure, 4-connecting member, 5-outer contour line of bottom-sealing concrete, 6-polyurethane waterproof coating, 7-SBS modified asphalt waterproof coiled material, 8-embedded steel bar, 9-connecting member steel bar, 10-water-swelling water stop glue, 11-micro-swelling cement and 12-waterproof additional layer.
Detailed Description
as shown in fig. 1, a structure for enhancing anti-floating capability of underground constructions/structures includes additional ballast supporting structures and connecting members; the extra-ballast supporting structure is a primary lining well wall and bottom sealing concrete which are constructed by adopting an inverted well wall method and have a supporting effect; the connecting component connects the additional weight support structure and the main structure into a whole component, and the connecting component is divided into the following components according to the connecting mode: a compression connecting member, a tension connecting member, and a shear connecting member.
as an alternative embodiment, as shown in fig. 2 and 3, there are schematic views of cylindrical and rectangular connecting members, respectively, which should satisfy the requirements of safety, waterproof sealing and easy construction of the structure, and should also consider its reasonable construction, easy availability of materials, simple process, etc.
As an alternative embodiment, the outrigger structure is preferably located outside the wall segments, preferably flush with the supporting underclothes, as shown in fig. 1. The cross section of the cantilever structure is rectangular, and the cantilever structure is cast by cast-in-place concrete.
As shown in fig. 6, as an alternative embodiment, a schematic diagram of a conical overhanging structure is shown, the overhanging structure should be used for checking the shearing bearing capacity and the punching bearing capacity, and when the size of the bottom surface of the overhanging structure is less than or equal to the effective height of the overhanging structure, the shearing bearing capacity of the joint of the overhanging structure and the well wall should be checked; when the punching damaged cone body falls within the bottom surface of the foundation of the cantilever structure, the punching bearing capacity of the connecting part of the cantilever structure and the well wall and the variable step part of the cantilever structure is checked.
As an alternative embodiment, as shown in fig. 7, the tension coupling member couples the back cover concrete and the main structure floor, the lower portion of the coupling bar is anchored in the back cover concrete, and the upper portion of the coupling bar is integrally cast with the main structure floor.
As an alternative embodiment, as shown in fig. 8, a T-shaped locking beam is arranged on the first section of the well wall of the compression member, and a stepped concrete clamping groove of the main body is arranged on the T-shaped locking beam in the support to limit the vertical upward displacement of the main body structure.
As an alternative embodiment, as shown in fig. 9, the shear member is located between the primary lining well wall and the side wall of the main structure, after the concrete is poured on the primary lining well wall, the steel bars are implanted, and the other ends of the implanted steel bars are poured with the main concrete to form the shear member.
As an alternative embodiment, as shown in fig. 4, the position of the bottom-sealing concrete under geological conditions is not suitable for earth excavation of the cantilever structure, and should be adjusted to a position where earth can be excavated.
As shown in fig. 5, as an alternative embodiment, because a layer of loose fine sand is arranged in the middle of the soil layer, the shearing failure surface of the soil body may be changed towards the direction which is not beneficial to resisting floating, and therefore, overhanging structures are arranged in the upper layer and the lower layer of fine sand silty clay layers, so that the shearing surface is ensured not to generate large sudden change due to the fine sand layer.
as an alternative embodiment, as shown in fig. 7, an expansion water stop strip or water stop glue is provided at the interface between the connecting steel bar and the concrete, and the anti-corrosion treatment is performed.
The above embodiments are only examples for illustrating the present invention, and the application of the present invention is not limited to the above examples, and the person skilled in the art can make variations and modifications according to the above description, and all variations and modifications based on the technical solution of the present invention, i.e. the embodiments, should fall within the scope of the claims of the present invention.
Claims (8)
1. A structure for enhancing anti-floating capability of underground construction/structures is characterized by comprising an additional weight supporting structure and a connecting member; the extra-weight supporting structure refers to a primary lining well wall and bottom sealing concrete which are constructed by adopting an inverted well wall method and have a supporting effect; the connecting component is a component for connecting the additional weight support structure and the main body structure into a whole, and the connecting component is divided into the following components according to the connecting mode: a compression connecting member, a tension connecting member and a shear connecting member; the additional weight support structure is firmly connected with the main structure through the connecting component, so that the total weight of the main structure is increased, and the anti-floating capacity of the main structure is improved.
2. The structure for enhancing the floating resistance of an underground construction/structure as claimed in claim 1, wherein the wall of the primary lining shaft has a cantilever structure for increasing the floating resistance thereof, the cantilever structure has a rectangular, stepped or tapered cross section, the cantilever structure is located at the middle and/or bottom outside the wall of the primary lining shaft, and the cantilever structure is made of cast-in-place concrete or precast concrete.
3. A structure for reinforcing anti-floating ability of underground constructions/structures according to claim 1, wherein the compression connecting members are composed of T-shaped locking notch beams and stepped clamping grooves of the side walls of the main body structure.
4. the structure for enhancing floating resistance of an underground structure/construction according to claim 1, wherein the tension connection member connects the back cover concrete and the main structure bottom plate, the lower portion of the connection reinforcing bar is anchored in the back cover concrete, and the upper portion of the connection reinforcing bar is cast integrally with the main structure bottom plate.
5. A structure for reinforcing anti-floating capability of underground constructions/structures according to claim 1, wherein the shear connection members connect the primary lining walls and the sidewalls of the main structure, and the connection bars are anchored or embedded in the primary lining walls at one end and cast integrally with the sidewalls of the main structure at the other end.
6. The structure for enhancing the anti-floating capability of the underground construction/structure according to claim 4 or 5, wherein an expansion water stop bar or water stop glue is arranged at the joint of the connecting steel bar and the concrete interface, and is subjected to anti-corrosion treatment.
7. The structure for enhancing anti-floating ability of underground constructions/structures according to claim 2, wherein the cantilever structure is disposed in a soil layer having self-stabilizing ability.
8. A structure for reinforcing the floating resistance of underground constructions/structures according to claim 1 wherein a waterproof layer is provided between the additional weight support structure and the main structure, the waterproof layer being a closed whole without any gaps that would cause leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920166133.4U CN209798847U (en) | 2019-01-30 | 2019-01-30 | Structure for enhancing anti-floating capacity of underground construction/structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920166133.4U CN209798847U (en) | 2019-01-30 | 2019-01-30 | Structure for enhancing anti-floating capacity of underground construction/structure |
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| CN209798847U true CN209798847U (en) | 2019-12-17 |
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| CN201920166133.4U Active CN209798847U (en) | 2019-01-30 | 2019-01-30 | Structure for enhancing anti-floating capacity of underground construction/structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853637A (en) * | 2019-01-30 | 2019-06-07 | 北京中岩智泊科技有限公司 | It is a kind of to build/structure and construction method of structures enhancing anti-floating ability for underground |
| CN111636875A (en) * | 2020-05-19 | 2020-09-08 | 北京市轨道交通建设管理有限公司 | Construction method of vertical shaft locking ring for underground excavation construction of subway |
-
2019
- 2019-01-30 CN CN201920166133.4U patent/CN209798847U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853637A (en) * | 2019-01-30 | 2019-06-07 | 北京中岩智泊科技有限公司 | It is a kind of to build/structure and construction method of structures enhancing anti-floating ability for underground |
| CN111636875A (en) * | 2020-05-19 | 2020-09-08 | 北京市轨道交通建设管理有限公司 | Construction method of vertical shaft locking ring for underground excavation construction of subway |
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