CN220953438U - Y-shaped supporting structure for solving conflict between concrete stay and frame column - Google Patents
Y-shaped supporting structure for solving conflict between concrete stay and frame column Download PDFInfo
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- CN220953438U CN220953438U CN202322635442.0U CN202322635442U CN220953438U CN 220953438 U CN220953438 U CN 220953438U CN 202322635442 U CN202322635442 U CN 202322635442U CN 220953438 U CN220953438 U CN 220953438U
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- 239000004567 concrete Substances 0.000 title claims abstract description 38
- 230000008093 supporting effect Effects 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 24
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 239000002356 single layer Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009424 underpinning Methods 0.000 description 1
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model relates to a Y-shaped supporting structure for solving the conflict between a concrete stay and a frame column, which comprises two Y-shaped branches, wherein one ends of the two Y-shaped branches are overlapped to form the same end, the two Y-shaped branches are arranged in a forked manner at a certain angle, the other ends of the two Y-shaped branches are respectively provided with a Y-shaped supporting horizontal section, and the Y-shaped branches are used for avoiding the frame column. The utility model has the advantages that: (1) The concrete support stay scheme can be effectively implemented, the effective lateral force rigidity is provided in the construction stage of the ultra-high clearance underground structure, and the overall stability of the foundation pit is ensured; (2) The engineering risk of high-altitude support replacement can be effectively avoided, the construction period is saved, and the manufacturing cost is saved; (3) The concrete support is enabled to successfully avoid the frame column, the integral pouring of the frame column can be ensured, especially the integral hoisting of the section steel concrete column and the integral pouring of the concrete can be ensured, so that the stress of the structure is safer, and the durability and the waterproof performance are also ensured.
Description
Technical Field
The utility model relates to the technical field of deep foundation pit engineering, in particular to a Y-shaped supporting structure for solving the conflict between a concrete stay and a frame column.
Background
Along with the rapid urban development and the large-scale intensive development and utilization of underground space in China, foundation pit engineering is continuously developed towards the ultra-large and ultra-deep direction. At present, in the design of a large-scale deep foundation pit inner support system, a plurality of concrete supports are still used as main materials, and a part of the support system with conditions can utilize a structural beam slab system as a support system to realize reverse construction.
Some underground structures are extremely irregularly arranged in order to meet special use functions. In the design of a super-large-scale underground space structure, a large number of engineering piles are often arranged to meet the stress requirement of the structure; in order to improve the permanent combination utilization rate, engineering piles are utilized to the greatest extent in the design of the inner support, and the problem that temporary supports collide with frame columns is unavoidable. For a conventional multi-layer basement, each support can be generally removed gradually along with the construction of each floor slab in the construction stage of the structure, then the frame column is constructed upwards, and the construction of the support is not influenced even if the support collides with the frame column. For a single-layer basement with only one support, if the support collides with a frame column and the top plate is higher than the support, the basement bottom plate construction can be finished, and whether the support is directly removed or the inclined steel throwing support is adopted for support replacement can be determined according to calculation. For the ultra-high headroom single-layer basement provided with a plurality of concrete supports, no middle floor plate provides effective lateral rigidity in the construction return stage, and if the supports are directly removed, the lateral rigidity of the enclosure structure system is insufficient, so that the overall safety and stability of the underground space in the return stage are influenced. In this case, stay measures are generally taken for a certain support according to the calculation. The stay can effectively avoid the safety risk of high-altitude stay replacement, saves construction period, reduces engineering cost, and has great advantages in the aspects of safety and economy. The support serving as the stay is accompanied with the whole basement construction process, and when the construction of the top plate of the basement is completed, the whole basement forms a closed box body with larger rigidity and the stay is detachable.
For the problem of conflict between stay and frame columns, temporary steel (or steel pipe) columns are generally adopted as temporary underpinning columns to be supported on a frame beam bottom plate after the basement bottom plate construction is completed, and the frame columns and beam column nodes are post-cast. If the single-layer basement has a clearance of more than ten meters, the hoisting, positioning and mounting of the temporary steel column can be completed by mechanical equipment, so that the single-layer basement has great safety risk and high cost; meanwhile, post-pouring of the frame column also causes cold joints to be formed on the beam-slab-column contact surfaces, and the structure is unfavorable in stress, durability and waterproof performance. In addition, the support system used as the temporary structure generally adopts concrete with a C30 or C35 strength grade, and the basement frame column generally adopts concrete with a C40-C50 strength grade, if a reinforcing steel bar connector of the frame column is left in the support construction, the frame column forms a weak stress section, and the structure is very unfavorable. The above measures are less viable when the frame column is a stiff frame column of an interpolated section steel.
Disclosure of Invention
According to the defects of the prior art, the Y-shaped supporting structure for solving the conflict between the concrete stay and the frame column is provided, so that the support completely avoids the frame column, the effective lateral rigidity is provided in the construction return stage, the safety of a foundation pit is ensured, and the problems of the integrity of the frame column, the structural safety, the durability and the waterproof performance are solved.
The utility model is realized by the following technical scheme:
A Y type bearing structure for solving concrete stays props and frame post conflict, its characterized in that: the Y-shaped supporting structure comprises two Y-shaped branches, one ends of the two Y-shaped branches are overlapped to form the same end, the two Y-shaped branches are arranged in a forked mode at a certain angle, the other ends of the two Y-shaped branches are respectively provided with a Y-shaped supporting horizontal section, and the Y-shaped branches are used for avoiding frame columns.
When the Y-shaped supporting structure is used for avoiding conflict frame columns adjacent to the edge of a foundation pit, the steel bars of the Y-shaped branches are anchored into the crown beam or the waist beam.
When the Y-shaped supporting structure is used for avoiding conflict frame columns in the foundation pit, the Y-shaped supporting structures are respectively arranged on two sides of the conflict frame columns, the two corresponding Y-shaped branches of the Y-shaped supporting structures are connected through the Y-shaped supporting horizontal section to form a whole, and reinforcing steel bars of the Y-shaped branches are anchored into the Y-shaped supporting structure horizontal section.
And reinforced concrete stiffening plates are arranged between the Y-shaped branches.
And the Y-shaped branch or the Y-shaped support horizontal section is respectively connected with the concrete stay.
The utility model has the advantages that:
(1) The concrete support stay scheme can be effectively implemented, the effective lateral force rigidity is provided in the construction stage of the ultra-high clearance underground structure, and the overall stability of the foundation pit is ensured;
(2) The engineering risk of high-altitude support replacement can be effectively avoided, the construction period is saved, and the manufacturing cost is saved;
(3) The concrete support is enabled to successfully avoid the frame column, the integral pouring of the frame column can be ensured, especially the integral hoisting of the section steel concrete column and the integral pouring of the concrete thereof can be ensured, so that the stress of the structure is safer, and the durability and the waterproof performance are also ensured;
(4) The construction efficiency can be improved, the construction cost can be saved, the construction quality can be improved, and the aim of realizing exquisite engineering can be further achieved while the safety of the foundation pit and the structure is ensured.
Drawings
FIG. 1 is a layout of a Y-shaped support of the present utility model arranged adjacent to the edge of a foundation pit;
FIG. 2 is a layout diagram of a Y-shaped support arranged in the middle of a foundation pit in the present utility model.
Description of the embodiments
The features of the utility model and other related features are described in further detail below by way of example in conjunction with the following figures to facilitate understanding by those skilled in the art:
As shown in fig. 1-2, reference numerals 1-8 are respectively represented as: the concrete stay 1, the Y-shaped branch 2, the Y-shaped support horizontal section 3, the reinforced concrete stiffening plate 4, the conflict frame column 5, the upright post 6, the crown beam or waist beam 7 and the enclosure structure 8.
Embodiment one: the Y-shaped supporting structure for solving the conflict between the concrete stay and the frame column in the embodiment is used for solving the problem of the position conflict between the concrete stay and the frame column at the position close to the inner edge of the foundation pit. That is, as shown in fig. 1, the left partial concrete stay 1 in the drawing should be directly connected to the crown beam or the wale 7 in the conventional construction, but in the working condition shown in fig. 1, the concrete stay 1 cannot be directly connected to the crown beam 7 or the wale 7 across the conflicting frame column 5 due to the existence of the conflicting frame column 5 or the section steel frame column. At this position, the problem of collision between the concrete stay 1 and the conflicting frame posts 5 is solved by the Y-shaped support structure in this embodiment.
Specifically, the Y-shaped support structure as shown in fig. 1 comprises two Y-shaped branches 2, which two Y-shaped branches 2 have a common end which is connected to a concrete stay 1. The two Y-shaped branches 2 are arranged in a forked mode with a certain angle, and Y-shaped supporting horizontal sections 3 are respectively arranged at the end parts of the two Y-shaped branches 2. As shown in fig. 1, the Y-shaped branch 2 is arranged, so that the Y-shaped support horizontal section 3 connected with the Y-shaped branch can bypass the conflict frame column 5 and is further connected with the crown beam or the waist beam 7, thereby solving the problem of position conflict between the concrete stay 1 and the conflict frame column 5.
In this embodiment, the steel bars of the Y-shaped branch 2 are anchored into the crown beam or the waist beam 7 near the side thereof, so that the Y-shaped branch 2 and the crown beam or the waist beam 7 can be connected into an integral structure, and the supporting effect is ensured.
And a column pile 6 is arranged below the Y-shaped branch 2 of the Y-shaped supporting structure, and the column pile 6 can be added or directly utilized according to engineering conditions.
As shown in fig. 1, a reinforced concrete stiffening plate 4 is disposed between the Y-shaped branches 2, and the reinforced concrete stiffening plate 4 is used for further connecting the two Y-shaped branches 2 into an integral structure, thereby ensuring the node structural strength of the supporting position and further ensuring the supporting effect.
Embodiment two: as shown in fig. 2, the difference between the present embodiment and the first embodiment is that: the Y-shaped supporting structure in the embodiment is used for solving the problem of position conflict between the concrete stay in the middle of the foundation pit and the frame column.
Specifically, as shown in fig. 2, the concrete stay supports 1 at two sides are respectively provided with Y-shaped support structures, each Y-shaped support structure comprises two Y-shaped branches 2, and the two Y-shaped branches 2 of the two Y-shaped support structures are connected one by one through a Y-shaped support horizontal section 3. At this time, the Y-shaped branches 2 on the same side are arranged in a forked manner at a certain angle, so that the Y-shaped support horizontal section 3 connected between the Y-shaped branches 2 on two sides bypasses the conflict frame column 5, and the problem of position conflict between the concrete stay 1 and the conflict frame column 5 is solved.
In this embodiment, the reinforcing bars of the Y-shaped branches 2 are anchored into the Y-shaped supporting horizontal sections 3 so that the Y-shaped supporting structures on both sides are connected into an integral structure.
The embodiment comprises the following processes when in implementation:
step one: and determining a crown beam or a waist beam 7, an enclosure structure 8 and a supporting system of the enclosure structure system according to the scale, the depth and the internal structure form of the foundation pit engineering, wherein the enclosure structure 8 can adopt enclosure piles and enclosure walls.
Step two: and (5) judging that the engineering does need stay according to calculation.
Step three: closely butt-jointed with a basement structural design unit to determine collision frame columns 5 (or profile steel frame columns) needing to be avoided.
Step four: and by combining the arrangement of the main structure engineering piles, the upright piles 6 (newly added or utilized engineering piles) are arranged, so that the permanent combined utilization rate is improved as much as possible.
Step five: and combining the positions and the quantity of the conflict frame columns 5 (or the profile steel frame columns) which need to be avoided by the concrete support stay 1, and considering the arrangement of the upright column piles 6 (newly added or utilized engineering piles), and determining the arrangement of the Y-shaped support structure and the reinforced concrete stiffening plates 4.
Step six: in actual construction, the concrete stay 1 can be removed after the basement roof construction is completed and the design strength is reached.
The embodiment is implemented in specific: the Y-shaped support 2 should conform to the following setting principles:
1) In the design process of the foundation pit supporting scheme, if the whole layer of support cannot be removed in sequence along with the construction of the foundation pit, or the support does not have a support changing condition, the support is treated according to a support remaining process. When the partial stay collides with the frame column and the partial stay cannot be removed in advance, Y-shaped stay treatment can be adopted.
2) The Y-shaped supporting range is shortened as much as possible according to the principle of economy and rationality. Y-shaped support nodes are led out from the intersection points of the support and the lattice columns as far as possible.
3) When the Y-shaped support is arranged, the angle of the Y-shape is reduced as much as possible in order to better transfer the side force of the foundation pit and reduce the shearing force at the Y-shaped node.
4) And whether the cross section sizes of the two branch supports of the Y-shaped support are the same as those of the straight support part or not is determined according to calculation.
5) The Y-shaped support is structurally provided with reinforced concrete plates in the triangular end areas formed by the two branch supports to ensure the support rigidity of the reinforced concrete plates.
6) The actual reinforcement of the Y-shaped support is determined according to calculation, and the anchoring of the two branch supports in the straight support part (or the crown beam and the waist beam) meets the standard requirement.
7) When two branches of the Y-shaped support are arranged, a formwork supporting space for frame column construction is reserved, and is generally not smaller than 200mm.
Although the foregoing embodiments have been described in some detail with reference to the accompanying drawings, it will be appreciated by those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the utility model as defined in the appended claims, and thus are not repeated herein.
Claims (5)
1. A Y type bearing structure for solving concrete stays props and frame post conflict, its characterized in that: the Y-shaped supporting structure comprises two Y-shaped branches, one ends of the two Y-shaped branches are overlapped to form the same end, the two Y-shaped branches are arranged in a forked mode at a certain angle, the other ends of the two Y-shaped branches are respectively provided with a Y-shaped supporting horizontal section, and the Y-shaped branches are used for avoiding frame columns.
2. A Y-shaped support structure for resolving conflicts between a concrete stay and a frame column as claimed in claim 1, wherein: when the Y-shaped supporting structure is used for avoiding conflict frame columns adjacent to the edge of a foundation pit, the steel bars of the Y-shaped branches are anchored into the crown beam or the waist beam.
3. A Y-shaped support structure for resolving conflicts between a concrete stay and a frame column as claimed in claim 1, wherein: when the Y-shaped supporting structure is used for avoiding conflict frame columns in the foundation pit, the Y-shaped supporting structures are respectively arranged on two sides of the conflict frame columns, the two corresponding Y-shaped branches of the Y-shaped supporting structures are connected through the Y-shaped supporting horizontal section to form a whole, and reinforcing steel bars of the Y-shaped branches are anchored into the Y-shaped supporting structure horizontal section.
4. A Y-shaped support structure for resolving conflicts between a concrete stay and a frame column as claimed in claim 1, wherein: and reinforced concrete stiffening plates are arranged between the Y-shaped branches.
5. A Y-shaped support structure for resolving conflicts between a concrete stay and a frame column as claimed in claim 1, wherein: and the Y-shaped branch or the Y-shaped support horizontal section is respectively connected with the concrete stay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322635442.0U CN220953438U (en) | 2023-09-27 | 2023-09-27 | Y-shaped supporting structure for solving conflict between concrete stay and frame column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322635442.0U CN220953438U (en) | 2023-09-27 | 2023-09-27 | Y-shaped supporting structure for solving conflict between concrete stay and frame column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220953438U true CN220953438U (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322635442.0U Active CN220953438U (en) | 2023-09-27 | 2023-09-27 | Y-shaped supporting structure for solving conflict between concrete stay and frame column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220953438U (en) |
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2023
- 2023-09-27 CN CN202322635442.0U patent/CN220953438U/en active Active
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