CN215977373U - Underground continuous wall and bottom plate connecting device in reverse construction method - Google Patents
Underground continuous wall and bottom plate connecting device in reverse construction method Download PDFInfo
- Publication number
- CN215977373U CN215977373U CN202122397554.8U CN202122397554U CN215977373U CN 215977373 U CN215977373 U CN 215977373U CN 202122397554 U CN202122397554 U CN 202122397554U CN 215977373 U CN215977373 U CN 215977373U
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- continuous wall
- underground continuous
- reinforcement
- steel bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The utility model discloses a connecting device of an underground continuous wall and a bottom plate in reverse construction, which belongs to the technical field of light steel structure buildings and comprises: the embedded rib is embedded in the underground continuous wall in advance and is firmly welded with the main rib of the underground continuous wall, and the reinforcing steel bar connector is connected to one end of the embedded rib; an enclosing purlin with adjustable section height is attached to the outer side of the underground continuous wall, and the lower side of the enclosing purlin is kept corresponding to the steel bar connector from beginning to end; the outer side of the purlin is connected with a main rib of the bottom plate in the bottom plate; the bottom plate main reinforcement comprises a bottom plate upper reinforcement and a bottom plate lower reinforcement; one end of the steel bar on the upper part of the bottom plate is anchored in the purlin; the outer side of the steel bar at the lower part of the bottom plate is fixedly connected with the steel bar connector; the inner side of the enclosing purlin is connected with the underground continuous wall through shear steel bars. The method has the advantage of improving the survival rate of the reinforcing steel bar connector of the underground continuous wall.
Description
Technical Field
The utility model relates to the technical field of light steel structure buildings, in particular to a connecting device for an underground continuous wall and a bottom plate in reverse construction.
Background
With the leap-type development of Chinese city construction, the construction of large-scale high-rise building foundation foundations and basements, large-scale underground shopping malls, underground parking lots, underground stations, underground transportation hubs, underground substations and the like faces the problem of deep foundation pit engineering. Due to the fact that engineering geology and hydrogeology conditions are complex and changeable, the requirements for environmental protection are higher and higher, development conditions such as development of foundation pit engineering scale to the direction of ultra-large area and large depth, construction period progress and resource conservation are increasingly complex.
Compared with the traditional deep foundation pit construction method, the reverse construction method has the advantages of protecting the environment, saving social resources, shortening the construction period and the like, overcomes the defects of conventional temporary support, and is an effective economic means for developing the sustainable urban underground space and constructing the conservation-oriented society.
In the traditional reverse construction method, the bottom steel bars and the upper steel bars of the bottom plate are connected with the underground continuous wall through connectors pre-buried in the underground continuous wall. In the construction process, because underground continuous wall subsides, reasons such as dislocation, cause connector and bottom plate reinforcing bar position error great, the bottom plate reinforcing bar is great with the connector butt joint degree of difficulty, and the connector survival rate is lower. After the connector fails, the method of re-leading holes and embedding bars is generally adopted to remedy, so that the construction progress is influenced, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides the connecting device for the underground continuous wall and the bottom plate in the reverse construction method, and the connecting device has the advantage of improving the survival rate of the connector in the underground continuous wall.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a connecting device of underground continuous wall and bottom plate in reverse construction method comprises: the embedded rib is embedded in the underground continuous wall in advance and is firmly welded with the main rib of the underground continuous wall, and the reinforcing steel bar connector is connected to one end of the embedded rib; an enclosing purlin with adjustable section height is attached to the outer side of the underground continuous wall, and the lower side of the enclosing purlin is kept corresponding to the steel bar connector from beginning to end; the outer side of the purlin is connected with a main rib of the bottom plate in the bottom plate; the bottom plate main reinforcement comprises a bottom plate upper reinforcement and a bottom plate lower reinforcement; one end of the steel bar on the upper part of the bottom plate is anchored in the purlin; the outer side of the steel bar at the lower part of the bottom plate is fixedly connected with the steel bar connector; the inner side of the enclosing purlin is connected with the underground continuous wall through shear steel bars.
In order to optimize the technical scheme, the specific measures adopted further comprise:
further, when the reinforcing steel bar connector is in an alignment state, the height of the cross section of the enclosing purlin is equal to that of the bottom plate, and one end of the reinforcing steel bar on the lower portion of the bottom plate penetrates through the enclosing purlin to be fixedly connected with the reinforcing steel bar connector.
Further, when the reinforcing steel bar connector is in a staggered state, a short reinforcing steel bar is arranged in the enclosing purlin, one end of the short reinforcing steel bar extends out of the inner side of the enclosing purlin and is fixedly connected with the reinforcing steel bar connector, and the other end of the short reinforcing steel bar is bent and is firmly welded with the reinforcing steel bar on the lower portion of the base plate to be fixed into a whole.
Furthermore, two groups of water-swelling rubber strips are arranged on the joint contact surface of the enclosing purlin and the underground continuous wall, and the positions of the two groups of water-swelling rubber strips are respectively located at the upper portion 1/3 and the lower portion 1/3 in the height range of the section of the corresponding enclosing purlin.
Furthermore, the diameter and the distance of the embedded ribs are the same as those of the main ribs of the bottom plate in the bottom plate, the length of the embedded ribs meets the requirement of anchoring length, one end of each embedded rib is embedded in the underground continuous wall in a straight anchor or bent anchor mode, and the other end of each embedded rib is connected with a steel bar connector.
Furthermore, the shear steel bars are horizontal embedded bars, the enclosing purlin is connected with the underground continuous wall through a plurality of equally spaced horizontal embedded bars, the diameter and the distance of the embedded bars are determined through calculation, the diameter of the embedded bars is not smaller than 16mm, and the horizontal and vertical distances between the plurality of embedded bars are not larger than 200 mm.
Furthermore, the shear steel bars adopt dowel bars, mechanical drilling is carried out on the underground continuous wall at positions corresponding to the dowel bars, and the hole diameter of the drilled holes is consistent with that of the dowel bars.
Further, the width of the cross section of the purlin is not less than 400mm and not less than half of the thickness of the bottom plate.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the steel bars at the upper part of the base plate are anchored into the enclosing purlin, the connector which is embedded in the underground continuous wall and connected with the steel bars at the upper part of the base plate in the traditional method is eliminated, and only the connector connected with the steel bars at the lower part of the base plate is reserved; in the work progress, the ware location of plugging into can not avoid producing the error, and through adjusting enclose purlin cross-section height and further through the short reinforcement that one end was bent with plugging into the ware be connected to bottom plate lower part reinforcing bar on to can effectively improve the ware survival rate of plugging into.
Drawings
FIG. 1 is a schematic view of the joint between the underground continuous wall and the bottom plate in the alignment state of the connector for reinforcing bars of the present invention;
fig. 2 is a big picture of the joint of the underground continuous wall and the bottom plate under the malposition state of the reinforcing steel bar connector.
The label names in the figure: underground continuous wall 1, pre-buried muscle 2, reinforcing bar connector 3, meet water inflation rubber strip 4, bottom plate 5, bottom plate upper portion reinforcing bar 51, bottom plate lower part reinforcing bar 52, short reinforcing bar 53, enclose purlin 6, shear reinforcement 7.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
It should be noted that the terms "upper", "lower", "left", "right", "front", "back", etc. used in the present invention are for clarity of description only, and are not intended to limit the scope of the utility model, and the relative relationship between the terms and the terms is not limited by the scope of the utility model.
Referring to fig. 1-2, the connecting device for the underground diaphragm wall and the bottom plate in the top-down construction of the embodiment can be widely applied to top-down construction of foundation foundations of high-rise buildings, basements, large underground shopping malls, underground parking lots, underground stations, underground transportation hubs, underground substations and the like; the method specifically comprises the following steps: the embedded reinforcement 2 is embedded in the underground continuous wall 1 and is firmly welded with the main reinforcement of the underground continuous wall, and the reinforcement connector 3 is connected to one end of the embedded reinforcement 2; the outer side of the underground continuous wall 1 is provided with an enclosing purlin 6 with adjustable section height in a fitting manner, and the lower part of the enclosing purlin 6 is kept corresponding to the steel bar connector 3 from beginning to end; the outer side of the surrounding purlin 6 is connected with a bottom plate main rib in the bottom plate 5; the main reinforcement of the bottom plate comprises a reinforcement 51 at the upper part of the bottom plate and a reinforcement 52 at the lower part of the bottom plate; wherein, one end of the steel bar 51 on the upper part of the bottom plate is anchored in the surrounding purlin 6; the outer side of the steel bar 52 at the lower part of the bottom plate is fixedly connected with the steel bar connector 3; the inner side of the purlin 6 is connected with the underground continuous wall 1 through shear steel bars 7.
In the embodiment, the diameter and the interval of the embedded ribs 2 are the same as those of the main ribs of the bottom plate and are firmly welded with the main ribs of the underground continuous wall 1, the length of the embedded ribs 2 meets the requirement of anchoring length, one end of each embedded rib is embedded in the underground continuous wall 1 in a straight anchor or bent anchor mode, and the other end of each embedded rib is connected with a steel bar connector 3; the outer side port of the reinforcing steel bar connector 3 is prevented from being blocked by measures.
Wherein, enclose purlin 6 and underground continuous wall 1 laminating contact surface and set up two sets of water-swelling rubber strip 4, the position of two sets of water-swelling rubber strip 4 is located upper portion 1/3 department and lower part 1/3 department that corresponds in 6 section height ranges of purlin respectively.
In this embodiment, shear reinforcement 7 is the level bar planting, encloses purlin 6 and underground continuous wall 1 and just equally divide the level bar planting who arranges to be connected through a plurality of equidistances, and bar planting diameter and interval are confirmed through calculating, and wherein bar planting diameter is not less than 16mm, and the level and the vertical interval of a plurality of bar planting are all not more than 200 mm.
In this embodiment, the shear steel bars 7 may also be dowel bars, and the underground diaphragm wall 1 is mechanically drilled at positions corresponding to the dowel bars, and the hole diameters of the drilled holes are the same as those of the dowel bars.
Referring to fig. 2, if the error between the pre-buried position of the steel bar connector 3 and the position of the steel bar 52 at the lower part of the base plate is less than 10mm (i.e. the steel bar connector 3 is in the alignment state), the height of the cross section of the purlin 6 is the same as the height of the base plate, and one end of the steel bar 52 at the lower part of the base plate penetrates through the purlin 6 and is fixedly connected with the steel bar connector 3; if the embedded position of the steel bar connector 3 is below the steel bar 52 at the lower part of the bottom plate (namely the steel bar connector 3 is in a staggered state), the height of the section of the enclosing purlin 6 is adjusted to ensure that the steel bar connector 3 corresponds to the lower part of the enclosing purlin 6, a short steel bar 53 is arranged in the enclosing purlin 6, and one end of the short steel bar 53 extends out of the inner side of the enclosing purlin 6 and is fixedly connected with the steel bar connector 3; the other end of the short steel bar 53 is bent and firmly welded and fixed with the bottom plate lower steel bar 52.
The width of the section of the enclosing purlin 6 is not smaller than 400mm and not smaller than half of the thickness of the bottom plate 5, and the reinforcing bars and the structure of the enclosing purlin 6 are arranged according to the requirements of the hidden beam.
It should be noted that the connecting device of the utility model adopts the enclosing purlin 6 to connect with the underground continuous wall 1 through the shear steel bar, the steel bar connector 3 connected with the steel bar 52 at the lower part of the bottom plate is only embedded in the underground continuous wall 1, the steel bar 51 at the upper part of the bottom plate is anchored in the enclosing purlin 6; under the action of the counterforce of the substrate or the buoyancy of water, the lower reinforcing steel bar 52 of the bottom plate at the support is pulled, the upper reinforcing steel bar 51 of the bottom plate is pressed, and the stress of the upper reinforcing steel bar meets the stress and structural requirements of the support of the bottom plate 5.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may be made by those skilled in the art without departing from the principle of the utility model.
Claims (8)
1. The utility model provides a connecting device of underground continuous wall and bottom plate in reverse construction, its characterized in that includes: the embedded reinforcement (2) is embedded in the underground continuous wall (1) in advance and is firmly welded with the main reinforcement of the underground continuous wall, and the reinforcing steel bar connector (3) is connected to one end of the embedded reinforcement (2); an enclosing purlin (6) with adjustable section height is attached to the outer side of the underground continuous wall (1), and the lower part of the enclosing purlin (6) is kept corresponding to the steel bar connector (3) from beginning to end; the outer side of the purlin (6) is connected with a main bottom plate rib in the bottom plate (5); the main reinforcements of the bottom plate comprise upper reinforcements (51) of the bottom plate and lower reinforcements (52) of the bottom plate; one end of a steel bar (51) on the upper part of the bottom plate is anchored in the surrounding purlin (6); the outer side of the steel bar (52) at the lower part of the bottom plate is fixedly connected with the steel bar connector (3); the inner side of the purlin (6) is connected with the underground continuous wall (1) through shear steel bars (7).
2. The connecting device for the underground continuous wall and the bottom plate in the reverse construction method according to claim 1, wherein when the reinforcement connector (3) is in the alignment state, the height of the cross section of the enclosing purlin (6) is the same as that of the bottom plate, and one end of the reinforcement (52) at the lower part of the bottom plate penetrates through the enclosing purlin (6) and is fixedly connected with the reinforcement connector (3).
3. The device for connecting the underground continuous wall and the bottom plate in the reverse construction method according to claim 1, wherein when the reinforcement connector (3) is in a dislocation state, a short reinforcement (53) is arranged in the enclosing purlin (6), one end of the short reinforcement (53) extends out of the inner side of the enclosing purlin (6) and is fixedly connected with the reinforcement connector (3), and the other end of the short reinforcement (53) is bent and is firmly welded with the lower reinforcement (52) of the bottom plate to be fixed into a whole.
4. The connecting device for the underground continuous wall and the bottom plate in the reverse construction method according to claim 2 or 3, wherein two groups of water-swelling rubber strips (4) are arranged on the joint contact surface of the enclosing purlin (6) and the underground continuous wall (1), and the positions of the two groups of water-swelling rubber strips (4) are respectively at the upper part 1/3 and the lower part 1/3 within the height range of the section of the enclosing purlin (6).
5. The connecting device for the underground continuous wall and the bottom plate in the reverse construction method according to claim 4, wherein the diameter and the spacing of the embedded ribs (2) are the same as those of the main ribs of the bottom plate in the bottom plate (5), the length of the embedded ribs (2) meets the requirement of anchoring length, one end of each embedded rib is embedded in the underground continuous wall (1) in a straight anchor or bent anchor mode, and the other end of each embedded rib is connected with the steel bar connector (3).
6. The device for connecting the underground continuous wall and the bottom plate in the reverse construction method according to claim 5, wherein the shear steel bars (7) are horizontal steel bars, the enclosing purlin (6) is connected with the underground continuous wall (1) through a plurality of equally spaced horizontal steel bars, the diameter and the spacing of the steel bars are determined by calculation, the diameter of the steel bars is not less than 16mm, and the horizontal and vertical spacing between the steel bars is not more than 200 mm.
7. The connecting device for underground continuous wall and bottom plate in reverse construction according to claim 5, wherein the shear steel bars (7) are formed by dowel bars, and the underground continuous wall (1) is mechanically drilled at the positions corresponding to the dowel bars, and the hole diameter of the drilled holes is consistent with that of the dowel bars.
8. A top-down construction underground diaphragm wall and bottom plate connecting device according to claim 7, wherein the section width of the purlin (6) is not less than 400mm and not less than half of the thickness of the bottom plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397554.8U CN215977373U (en) | 2021-09-30 | 2021-09-30 | Underground continuous wall and bottom plate connecting device in reverse construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397554.8U CN215977373U (en) | 2021-09-30 | 2021-09-30 | Underground continuous wall and bottom plate connecting device in reverse construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215977373U true CN215977373U (en) | 2022-03-08 |
Family
ID=80508868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122397554.8U Active CN215977373U (en) | 2021-09-30 | 2021-09-30 | Underground continuous wall and bottom plate connecting device in reverse construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215977373U (en) |
-
2021
- 2021-09-30 CN CN202122397554.8U patent/CN215977373U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104405041B (en) | The prefabricated floor connector of steel building and mounting method thereof | |
| CN110820763A (en) | Truss type cast-in-situ bored pile supporting method for mucky soil deep foundation pit | |
| CN105065009B (en) | A kind of method extending shield-tunneling construction subway station | |
| CN206591509U (en) | Protecting wall and the precast concrete pile for building protecting wall | |
| CN204225277U (en) | The prefabricated floor connector of steel building | |
| CN112575789A (en) | Diagonal space truss foundation pit inner support system | |
| CN215977373U (en) | Underground continuous wall and bottom plate connecting device in reverse construction method | |
| CN109403349A (en) | A kind of upper flexible and lower rigid system of deep foundation pit support and its construction method | |
| CN204001705U (en) | Outer wall of basement single surface formwork constructing structure based on earth anchor truss | |
| CN203530959U (en) | High-strength underground diaphragm wall | |
| CN110700273A (en) | In-situ protection method for side-by-side masonry pipe trench crossing foundation pit | |
| CN215671017U (en) | Narrow and small space formwork system of basement outer wall | |
| CN215977295U (en) | Foundation pit supporting structure | |
| CN103924616B (en) | The pre-buried shearing groove of ultra-deep underground continuous wall makes, construction method of installation | |
| CN212534139U (en) | Subway foundation pit slope supporting construction | |
| CN209323534U (en) | A kind of upper flexible and lower rigid system of deep foundation pit support | |
| CN211312527U (en) | Support stand bottom plate watertight fittings in ultra-deep foundation ditch | |
| CN216379554U (en) | Foundation ditch reinforced structure based on high pressure jet grouting pile | |
| CN204457073U (en) | Foundation-free construction temporary construction fence | |
| CN112726868A (en) | Vertical connected node of unit-installment shear force wall | |
| CN220580010U (en) | Miniature pile combined supporting structure | |
| CN221297879U (en) | Pile foundation structure with karst cave filling function | |
| CN213538995U (en) | Foundation pit reinforcing structure capable of reducing influence of bottom flow plastic soil body | |
| CN206015685U (en) | A kind of Collapsible Loess District deep basal pit diaphram wall inner support system | |
| CN221255378U (en) | Water conservancy retaining wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |