CN220768090U - Variable cross-section foundation pit bracing member - Google Patents
Variable cross-section foundation pit bracing member Download PDFInfo
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- CN220768090U CN220768090U CN202322326106.8U CN202322326106U CN220768090U CN 220768090 U CN220768090 U CN 220768090U CN 202322326106 U CN202322326106 U CN 202322326106U CN 220768090 U CN220768090 U CN 220768090U
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- joint component
- upper joint
- section
- end plate
- foundation pit
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- 239000000463 material Substances 0.000 claims abstract description 29
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 7
- 238000010008 shearing Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
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- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model provides a variable cross-section foundation pit bracing member, comprising: an upper joint member, a lower joint member, and a connection assembly; the bottom surface of the upper joint component is provided with a bulge part which protrudes outwards along the direction away from the upper joint component; the top surface of the lower joint component is provided with a groove matched with the protruding part, and the protruding part is accommodated in the groove when the upper joint component is connected with the lower joint component; the connecting assembly comprises a connecting end plate and a connecting piece, the connecting end plate is arranged at the edge of the groove, and the connecting end plate is connected with the upper joint component through the connecting piece. The upper joint component and the lower joint component are connected through the connecting piece, so that the arrangement is simple and the connection quality is easy to ensure; meanwhile, the convex parts are embedded into the grooves during connection, and the bonding materials are arranged, so that the connection positions are closely and firmly contacted, and the shearing resistance of the connection positions is enhanced; in addition, the variable cross-section structural design is adopted, so that the waste of materials is avoided, and the cost of the component is reduced.
Description
Technical Field
The utility model relates to the field of civil engineering construction, in particular to a variable cross-section foundation pit support member.
Background
Aiming at the defects of low material utilization rate, more field operations and high engineering cost of the bored pile as the foundation pit support structure, engineering technicians in recent years aim to develop precast concrete members as the foundation pit support structure. At present, prefabricated foundation pit bracing members mostly adopt a uniform cross section and mechanical connection mode, and the defects of lower material waste and weak connection shearing capacity exist.
Disclosure of Invention
The utility model aims to provide a variable cross-section foundation pit support member, which solves the problems that the connection of the prior prefabricated assembly support member has defects and the design of the constant cross section has material waste.
In order to achieve the above object, the present utility model provides a variable cross-section foundation pit bracing member, comprising: an upper joint member, a lower joint member, and a connection assembly;
the bottom surface of the upper joint component is provided with a protruding part, and the protruding part protrudes outwards along the direction away from the upper joint component; the top surface of the lower joint component is provided with a groove matched with the protruding part, and the protruding part is accommodated in the groove when the upper joint component is connected with the lower joint component;
the connecting assembly comprises a connecting end plate and a connecting piece, wherein the connecting end plate is arranged at the edge of the groove, and the connecting end plate is connected with the upper joint component through the connecting piece.
Optionally, the cross-sectional area of the upper joint member is greater than the cross-sectional area of the lower joint member.
Optionally, the cross-sectional area of the groove plus the cross-sectional area of the connecting end plate is less than or equal to the cross-sectional area of the upper joint member.
Optionally, the connecting end plate is integrally formed with the lower joint member.
Optionally, the protruding portion is disposed at a bottom center of the upper joint member; the groove is arranged in the center of the top surface of the lower joint component.
Optionally, the connector is pre-embedded in the upper joint member and protrudes from the upper joint member.
Optionally, one end of the connecting piece is anchored into the inner filler of the upper joint component when being connected, and the other end penetrates into the connecting end plate.
Optionally, the upper surface of the groove and/or the connection end plate is provided with an adhesive material.
In summary, in the variable cross-section foundation pit bracing member provided by the utility model, the variable cross-section foundation pit bracing member comprises: an upper joint member, a lower joint member, and a connection assembly; the bottom surface of the upper joint component is provided with a bulge part which protrudes outwards along the direction away from the upper joint component; the top surface of the lower joint component is provided with a groove matched with the protruding part, and the protruding part is accommodated in the groove when the upper joint component is connected with the lower joint component; the connecting assembly comprises a connecting end plate and a connecting piece, the connecting end plate is arranged at the edge of the groove, and the connecting end plate is connected with the upper joint component through the connecting piece. Compared with the existing foundation pit bracing member, the foundation pit bracing member has the following advantages:
the upper joint component and the lower joint component are connected through the connecting piece, so that the arrangement is simple and the connection quality is easy to ensure; meanwhile, when in connection, the convex part is embedded into the groove, and the bonding material is arranged, so that the connection position is closely and firmly contacted, and the shearing resistance of the connection position is enhanced; in addition, the cross-sectional area of the upper section component is larger than that of the lower section component, and the variable cross-section structural design is adopted, so that the waste of materials is avoided, and the component cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a variable cross-section foundation pit bracing member according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of an upper joint member according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a junction of an upper joint member and a lower joint member provided in an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a lower joint member according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of step S1 according to the first embodiment of the present utility model;
FIG. 6 is a schematic diagram of step S2 according to the first embodiment of the present utility model;
FIG. 7 is a schematic diagram of steps S3 and S4 provided in the first embodiment of the present utility model;
FIG. 8 is a schematic diagram of step S5 according to the first embodiment of the present utility model;
FIG. 9 is a schematic diagram of step S1 according to a second embodiment of the present utility model;
FIG. 10 is a schematic diagram of step S2 according to a second embodiment of the present utility model;
FIG. 11 is a schematic diagram of steps S3, S4 and S5 provided in a second embodiment of the present utility model;
fig. 12 is a schematic diagram of step S6 provided in the second embodiment of the present utility model;
wherein, the explanation of each reference sign is as follows:
1-an upper joint member; 11-a boss;
2-lower joint members; 21-grooves;
a 3-connection assembly; 31-connecting end plates; 32-a connector;
4-anchors.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the utility model more apparent. It should be noted that the drawings are in a very simplified form and are not drawn to scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments.
As used in this specification, the singular forms "a," "an," and "the" include plural referents, the term "or" is generally used in the sense of comprising "and/or" and the term "several" is generally used in the sense of comprising "at least one," the term "at least two" is generally used in the sense of comprising "two or more," and the term "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or number of technical features indicated. Thus, a feature defining "first," "second," "third," or "third" may explicitly or implicitly include one or at least two such features, with "one end" and "another end" and "proximal end" and "distal end" generally referring to the respective two portions, including not only the endpoints, but also the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, e.g., as being either a fixed connection, a removable connection, or as being integral therewith; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Furthermore, as used in this specification, an element disposed on another element generally only means that there is a connection, coupling, cooperation or transmission between the two elements, and the connection, coupling, cooperation or transmission between the two elements may be direct or indirect through intermediate elements, and should not be construed as indicating or implying any spatial positional relationship between the two elements, i.e., an element may be in any orientation, such as inside, outside, above, below or on one side of the other element unless the context clearly indicates otherwise. The terms "upper", "lower", "top" and "bottom" are generally relative positional relationships arranged in the direction of gravity; the term "vertical, vertical direction" generally refers to a direction along the force of gravity that is generally perpendicular to the ground, and "horizontal, horizontal direction" generally refers to a direction parallel to the ground; the specific meaning of the above terms in this specification will be understood by those of ordinary skill in the art in view of the specific circumstances.
The utility model aims to provide a variable cross-section foundation pit support member, which solves the problems that the connection of the prior prefabricated assembly support member has defects and the design of the constant cross section has material waste.
The following description refers to the accompanying drawings.
In this embodiment, the upper and lower parts of the upper joint member and the lower structural member represent the relative positional relationship of the members in the direction of gravity, and the top and bottom surfaces represent the opposite surfaces of the members in the direction of gravity.
Referring to fig. 1 to 4, the present utility model provides a variable cross-section foundation pit bracing member, comprising: an upper joint member 1, a lower joint member 2, and a connection assembly 3; the bottom surface of the upper joint component 1 is provided with a protruding part 11, and the protruding part 11 protrudes outwards along the direction away from the upper joint component 1; the top surface of the lower joint component 2 is provided with a groove 21 matched with the protruding part 11, and the protruding part 11 is accommodated in the groove 21 when the upper joint component 1 is connected with the lower joint component 2; the connection assembly 3 includes a connection end plate 31 and a connection member 32, the connection end plate 31 is provided at the edge of the groove 21, and the connection end plate 31 is connected with the upper joint member 1 through the connection member 32. As can be appreciated by those skilled in the art, the foundation pit bracing member adopted in the present application is a segmented prefabricated member, and each segment can select an optimal cross-sectional shape, size and reinforcement according to the stress requirement; in the present embodiment, the cross sections of the upper joint member 1, the lower joint member 2, and the connecting end plate 31 are rectangular; meanwhile, the bulge 11 is arranged on the bottom surface of the upper joint component 1, the groove 21 matched with the bulge is arranged on the top surface of the lower joint component 2, and the bulge 11 is embedded into the groove 21 during connection, so that a shear key is formed, and the shear capacity of the joint of the upper joint component 1 and the lower joint component 2 is further improved. In other embodiments, the cross-sectional shapes of the upper joint member 1 and the lower joint member 2 may be i-shaped, box-shaped, etc., and correspondingly, the cross-sectional shape of the connecting end plate 31 may be a shape adapted thereto; at the same time, the protruding portion 11 may be disposed on the top surface of the lower member 2, and the corresponding groove 21 needs to be disposed on the bottom surface of the upper member 1, which may be configured by those skilled in the art according to practical situations.
Because the existing foundation pit bracing members are mostly cast-in-situ members, the cost is high; although there are also integral prefabricated parts, transportation is difficult due to the large size; the variable cross-section foundation pit support member provided by the application is of a sectional prefabricated structure, and the shear key is arranged at the joint of the upper section member 1 and the lower section member 2 while transportation is facilitated, so that the shear capacity of the joint is further improved, the connection mode of the support member is simplified, and the construction efficiency is improved.
Further, with continued reference to fig. 1-4, the cross-sectional area of the upper joint member 1 is greater than the cross-sectional area of the lower joint member 2. So configured, the cross-sectional area of the upper joint member 1 is larger than that of the lower joint member 2, and the structural design with variable cross-section is adopted, so that on one hand, the required cross-sectional area can be determined according to the stress requirement of each section of member, and on the other hand, the waste of materials can be reduced, and the cost of the prefabricated member is reduced. Preferably, the cross-sectional area of the groove 21 plus the cross-sectional area of the connecting end plate 31 is less than or equal to the cross-sectional area of the upper joint member 1. In order to ensure the connection strength at the variable cross section, the connection end plates 31 are respectively arranged at the edges of the grooves 21, so that the cross section area of the grooves 21 plus the cross section area of the connection end plates 31 is smaller than or equal to the cross section area of the upper joint member 1, and the support members are arranged below the connection end plates 31, and form a triangular stable structure, thereby further enhancing the strength at the variable cross section. In this embodiment, the upper joint member 1 and the lower joint member 2 are variable cross-section members, and in other embodiments, the upper joint member 1 and the lower joint member 2 may be constant cross-section members, and meanwhile, the number of segments of the entire enclosure member may be any integer greater than or equal to 2, which may be configured by a person skilled in the art according to practical situations.
In an alternative embodiment, the boss 11 is provided at the center of the bottom surface of the upper joint member 1; the groove 21 is provided in the center of the top surface of the lower joint member 2. As will be appreciated by those skilled in the art, the boss 11 and the recess 21 of the present application are respectively centrally disposed in view of the influence of the eccentric structure on the force applied to the member; of course, in other embodiments, the protruding portion 11 and/or the recess 21 may be provided at other positions to form an eccentric structure, but it should be noted that if the eccentric structure is formed, the connecting end plates 31 on both sides will need to be provided as members of different sizes according to the actual stress situation.
With continued reference to fig. 1, the connecting end plate 31 is integrally formed with the lower joint member 2; the connector 32 is pre-buried in the upper joint member 1 and protrudes out of the upper joint member 1. In this embodiment, the connecting end plate 31 is integrally formed with the lower joint member 2, one end of the connecting piece 32 is embedded in the upper joint member 1, and the other end extends out of the upper joint member 1 for connection with the lower joint member 2; of course, in other embodiments, the connecting end plate 31 may be integrally formed with the upper joint member 1, and one end of the connecting piece 32 may be embedded in the lower joint member 2, so that the positions and connection relationships of the connecting piece 32 and the connecting end plate 31 may be configured by those skilled in the art according to practical situations.
Further, when the connection member 32 is connected, one end is anchored into the inner filler of the upper joint member 1, and the other end penetrates into the inside of the connection end plate 31. It should be noted that, in this embodiment, the internal filler may be concrete or other materials, the connecting member 32 is a bolt, and screw holes are provided at corresponding positions of the upper joint member 1 and the connecting end plate 31, so that the connecting member 32 is inserted therein. In other embodiments, the upper and lower joint members 1, 2 may be welded or otherwise connected.
As an alternative embodiment, the upper surface of the recess 21 and/or the connection end plate 31 is provided with an adhesive material. In this embodiment, the bonding material includes one or more of a high-strength grouting material and an epoxy resin, and in other embodiments, the bonding material may also be other materials with a bonding effect. Meanwhile, in the example shown in fig. 1, the connection point between the connection end plate 31 and the lower joint member 2 is further provided with an anchor 4, which is connected with the main rib of the lower joint member 2 to increase the connection strength between the connection end plate 31 and the lower joint member 2, and of course, in other embodiments, the connection point between the upper joint member 1 and the lower joint member 2 may be provided with other members capable of enhancing the connection strength.
Referring to fig. 5 to 8, in another embodiment, the present utility model further provides a construction method of a variable cross-section foundation pit support member, which is applied to the variable cross-section foundation pit support member as described above, and includes:
step S1: pre-forming the upper joint member 1, the lower joint member 2 and the connection assembly 3;
step S2: filling adhesive material into the groove 21 of the lower joint component 2, and coating adhesive material on the upper surface of the connecting end plate 31;
step S3: lifting the upper joint component 1 so that the protruding part 11 is embedded into the groove 21;
step S4: the upper joint component 1 and the lower joint component 2 are connected through the connecting piece 32, and a pretightening force is applied;
step S5: sinking the assembled prefabricated foundation pit bracing member to the designed elevation.
Referring to fig. 9 to 12, the present utility model further provides a construction method of a variable cross-section foundation pit support member, which is applied to the variable cross-section foundation pit support member as described above, and includes:
step S1: pre-forming the upper joint member 1, the lower joint member 2 and the connection assembly 3;
step S2: sinking the lower joint member 2 into the earth;
step S3: filling adhesive material into the groove 21 of the lower joint component 2, and coating adhesive material on the upper surface of the connecting end plate 31;
step S4: lifting the upper joint component 1 to enable the protruding part 11 to be embedded into the groove 21;
step S5: the upper joint component 1 and the lower joint component 2 are connected through the connecting piece 32, and a pretightening force is applied;
step S6: sinking the component to the design elevation.
In the examples shown in fig. 5 to 8, the construction method is pre-assembled (i.e., the upper and lower joint members are assembled and then sunk to the design elevation); in the examples shown in fig. 9 to 12, the construction method adopted is in-situ assembly (i.e., the lower joint member is first sunk into the earth, then the upper joint member is connected, and finally sunk together to the design elevation); the person skilled in the art can determine which construction method to use according to the situation of the construction site. In the present embodiment, the number of the upper joint member 1 and the lower joint member 2 may be plural; the materials of the upper joint component 1 and the lower joint component 2 can be the same or different; the cross section shape, the size and the reinforcement of each section of the component can be arbitrarily configured according to the requirements; the upper joint component 1 and the lower joint component 2 can be connected in a centering way or not; the joint of the upper joint component 1 and the lower joint component 2 can be provided with shear keys, filled with bonding materials or applied with pretightening force, and only part of the content can be provided; the range, thickness, material type and material specification of the poured bonding material are not limited; the number, position, shape and size of the shear keys are not limited; the number, location, shape, size, material, and specification of the connecting members 32 are not limited, and those skilled in the art can flexibly configure the same.
In summary, in the variable cross-section foundation pit support member provided by the embodiment of the present utility model, the variable cross-section foundation pit support member includes: an upper joint member, a lower joint member, and a connection assembly; the bottom surface of the upper joint component is provided with a bulge part which protrudes outwards along the direction away from the upper joint component; the top surface of the lower joint component is provided with a groove matched with the protruding part, and the protruding part is accommodated in the groove when the upper joint component is connected with the lower joint component; the connecting assembly comprises a connecting end plate and a connecting piece, the connecting end plate is arranged at the edge of the groove, and the connecting end plate is connected with the upper joint component through the connecting piece. Compared with the existing foundation pit bracing member, the foundation pit bracing member has the following advantages:
the upper joint component and the lower joint component are connected through the connecting piece, so that the arrangement is simple and the connection quality is easy to ensure; meanwhile, when in connection, the convex part is embedded into the groove, and the bonding material is arranged, so that the connection position is closely and firmly contacted, and the shearing resistance of the connection position is enhanced; in addition, the cross-sectional area of the upper section component is larger than that of the lower section component, and the variable cross-section structural design is adopted, so that the waste of materials is avoided, and the component cost is reduced.
The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (8)
1. A variable cross-section foundation pit bracing member, comprising: an upper joint member, a lower joint member, and a connection assembly;
the bottom surface of the upper joint component is provided with a protruding part, and the protruding part protrudes outwards along the direction away from the upper joint component; the top surface of the lower joint component is provided with a groove matched with the protruding part, and the protruding part is accommodated in the groove when the upper joint component is connected with the lower joint component;
the connecting assembly comprises a connecting end plate and a connecting piece, wherein the connecting end plate is arranged at the edge of the groove, and the connecting end plate is connected with the upper joint component through the connecting piece.
2. The variable cross-section foundation pit bracing member of claim 1, wherein the cross-sectional area of the upper section member is greater than the cross-sectional area of the lower section member.
3. The variable cross-section foundation pit bracing member of claim 1, wherein the cross-sectional area of the groove plus the cross-sectional area of the connecting end plate is less than or equal to the cross-sectional area of the upper section member.
4. The variable cross-section foundation pit bracing member of claim 1, wherein the connecting end plate is integrally formed with the lower section member.
5. The variable cross-section foundation pit bracing member of claim 1, wherein the boss is provided at a bottom center of the upper joint member; the groove is arranged in the center of the top surface of the lower joint component.
6. The variable cross-section foundation pit bracing member of claim 1, wherein the connector is pre-embedded in the upper section member and extends beyond the upper section member.
7. The variable cross-section foundation pit bracing member of claim 6, wherein the connector, when connected, has one end anchored into the internal filling of the upper section member and the other end penetrating into the interior of the connecting end plate.
8. The variable cross-section foundation pit bracing member of claim 1, wherein the upper surface of the groove and/or the connection end plate is provided with an adhesive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322326106.8U CN220768090U (en) | 2023-08-29 | 2023-08-29 | Variable cross-section foundation pit bracing member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322326106.8U CN220768090U (en) | 2023-08-29 | 2023-08-29 | Variable cross-section foundation pit bracing member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220768090U true CN220768090U (en) | 2024-04-12 |
Family
ID=90611282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322326106.8U Active CN220768090U (en) | 2023-08-29 | 2023-08-29 | Variable cross-section foundation pit bracing member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220768090U (en) |
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2023
- 2023-08-29 CN CN202322326106.8U patent/CN220768090U/en active Active
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