CN210086482U - Laminated column concrete beam node structure - Google Patents
Laminated column concrete beam node structure Download PDFInfo
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- CN210086482U CN210086482U CN201920257765.1U CN201920257765U CN210086482U CN 210086482 U CN210086482 U CN 210086482U CN 201920257765 U CN201920257765 U CN 201920257765U CN 210086482 U CN210086482 U CN 210086482U
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- 239000004567 concrete Substances 0.000 title claims abstract description 194
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 349
- 239000010959 steel Substances 0.000 claims abstract description 349
- 239000002131 composite material Substances 0.000 claims abstract description 45
- 238000004873 anchoring Methods 0.000 claims abstract description 34
- 238000010276 construction Methods 0.000 claims abstract description 29
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 27
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 22
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 8
- 210000003205 muscle Anatomy 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
Relate to a composite column concrete beam node construction, include: the steel tube concrete superposed column or the steel concrete column, the concrete beam and the annular steel bar or the steel belt; the annular steel bars or the steel belts and the steel pipe concrete superposed columns or the steel reinforced concrete columns are coaxially arranged in the steel pipe concrete superposed columns or the steel reinforced concrete columns, and the stressed longitudinal bars of the concrete beams are buckled in the annular steel bars or the steel belts and anchored in the steel pipe concrete superposed columns or the steel reinforced concrete columns. The annular reinforcing steel bars or the steel belts are used as anchoring ribs of the stressed longitudinal ribs, the stressed longitudinal ribs bypass the steel pipes or the steel belts through the annular reinforcing steel bars or the steel belts to transmit main tensile force, force transmission paths are clear and reliable in stress, beam column nodes have good anti-seismic performance, the stressed longitudinal ribs are prevented from penetrating through complex structures of the steel pipes or the steel belts, and concrete pouring difficulty caused by the fact that reinforcing steel bars or steel bars penetrate through the steel pipes is avoided. Construction is convenient, and node design flexibility is improved.
Description
Technical Field
The utility model relates to a building structure field especially relates to a superposed column concrete beam node construction.
Background
The steel tube concrete composite column and the steel tube concrete column are widely applied to high-rise buildings and large industrial plants, and remarkable economic benefits are obtained. However, the existing connecting joint of the steel pipe concrete composite column or the steel reinforced concrete column and the concrete beam has complex structure and inconvenient construction, and the popularization and the use of the structure are limited. The structural requirement of the length of the straight anchor section anti-seismic anchoring in the steel pipe concrete composite column or the steel reinforced concrete column is met by the stress longitudinal bar of the concrete beam, and the stress longitudinal bar of the concrete beam is generally anchored by three modes: one is that the stressed longitudinal bar of the concrete beam passes through the embedded steel pipe to restrain the concrete or the profile steel, the number of the penetrating bars is large, the concrete in the pipe is difficult to pour, the construction period is long, and the bearing capacity of the superposed column is influenced by the opening of the steel pipe or the profile steel; secondly, the section size of the steel pipe constraint concrete or the section steel is reduced to ensure the width of the peripheral concrete section, so that the diameter of the steel pipe is too small to facilitate the pouring of the concrete, the bearing capacity of the concrete superposed column is restricted, and the flexibility of the section design of the superposed column is greatly limited; thirdly, a reinforced steel plate or a bracket is welded on the outer side wall of the steel pipe or the profile steel, and the stressed longitudinal bar of the concrete beam penetrates through the reinforced steel plate or is anchored on the steel plate, so that the structure is complex, the on-site welding workload is large, the construction efficiency is low, and the construction cost is high. The concrete beam end stressed longitudinal rib in the steel pipe concrete composite column or the steel concrete column-concrete beam node has reasonable force transmission, clear stress, simple anchoring structure and convenient construction, and has great engineering application value.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the prior art, the utility model aims at: provides a superposed column
And (3) constructing a concrete beam node. This beam column node structure is through setting up annular reinforcing bar or steel band as the atress and indulging the anchor muscle of muscle, realizes strong node easily, guarantees connected node's anti-seismic performance, is showing the design flexibility that improves beam column node.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a laminated column concrete beam node construction, comprising: the steel tube concrete superposed column or the steel concrete column, the concrete beam and the annular steel bar or the steel belt; the annular steel bars or the steel belts and the steel pipe concrete superposed columns or the steel reinforced concrete columns are coaxially arranged in the steel pipe concrete superposed columns or the steel reinforced concrete columns, the stressed longitudinal bars of the concrete beams are buckled in the annular steel bars or the steel belts and anchored in the steel pipe concrete superposed columns or the steel reinforced concrete columns, and the stressed longitudinal bars transmit main tensile force through the annular steel bars or the steel belts. After the beam and column joint structure is adopted, the stress longitudinal bars of the concrete beam are anchored by annular steel bars or steel belt buckles arranged in the steel pipe concrete composite column or the steel reinforced concrete column, so that the anti-seismic performance of the connection joint can be ensured, and the bearing capacity of the embedded steel pipe restrained concrete or profile steel can be fully exerted. The stress longitudinal rib extends into the straight anchor section in the column, an embedded steel pipe or profile steel does not need to be penetrated for meeting the structural requirement of the earthquake-proof anchoring length, and a connection reinforcing steel plate of the stress longitudinal rib of the concrete beam does not need to be additionally welded on the outer side wall of the steel pipe or the profile steel.
Preferably, the core of the steel tube concrete composite column is steel tube concrete, and the core of the steel tube concrete column is profile steel; the annular steel bar or the steel belt is positioned at the periphery of the section steel or the steel pipe.
Preferably, one end of the stressed longitudinal bar of the concrete beam, which is buckled on the annular steel bar or the steel strip, is welded with a section of short steel bar which is buckled on the annular steel bar or the steel strip; the length of the double-sided fillet welding seam of the short steel bar is determined by the calculated tension of the stressed longitudinal bar; when the diameter of the short steel bar is the same as that of the stressed longitudinal bar, the length of the double-sided fillet welding seam is not less than 5 times of the diameter of the stressed longitudinal bar; the number of the horizontal parallel ribs of the annular steel bars is not more than 3, the clear distance between the annular parallel ribs is not less than 30mm, and is more than or equal to 1.5 times of the diameter of the annular steel bars. After the structure is adopted, the reliable anchoring of the stressed longitudinal bar at the end of the concrete beam can be effectively realized, the bonding slippage of the stressed longitudinal bar in the steel pipe concrete composite column or the steel concrete column is inhibited, and the pouring of concrete is convenient. The stressed longitudinal bar is fastened and anchored by the short double-faced fillet-welded steel bars, so that the construction operation is very simple and convenient.
Preferably, the stressed longitudinal bar of the concrete beam is fixed with the annular steel bar or the steel strip in a spot welding mode to form a spot welding buckle anchoring structure.
Preferably, the end part of the stressed longitudinal bar of the concrete beam bypasses the annular steel bar or the steel belt to be vertically bent in the steel pipe concrete composite column or the steel bar concrete column, and the stressed longitudinal bar of the beam surface and the stressed longitudinal bar of the beam bottom are vertically bent to the beam bottom and the beam top of the concrete beam in a staggered mode respectively to form an L-shaped bent buckle anchoring structure.
Preferably, the end of the stressed longitudinal bar of the concrete beam bypasses the annular steel bar or the steel belt to be vertically bent in the steel pipe concrete composite column or the steel bar concrete column, the stressed longitudinal bar of the beam surface and the stressed longitudinal bar of the beam bottom are respectively vertically bent until the end parts of the stressed longitudinal bar and the stressed longitudinal bar of the beam bottom are overlapped, or the stressed longitudinal bar of the beam surface and the stressed longitudinal bar of the beam bottom are through-length steel bars, so that a [ -shaped bent buckle anchoring structure is formed.
Preferably, the cross-sectional areas of the ring-shaped reinforcing bars and the steel strips are determined by calculating the tensile force of the stressed longitudinal bars of the concrete beam. After the structure is adopted, the section area of the annular steel bar or the steel belt is determined according to the requirement, the stressed longitudinal bar of the concrete beam can be reliably anchored in the steel pipe concrete composite column or the steel reinforced concrete column, and the seismic structure requirement of a strong node is easy to realize.
Preferably, the concrete-filled steel tube composite column can be round, square or rectangular, and the embedded steel tube can be round, square or rectangular; the section steel concrete column can be in a shape of various combinations of Cross-shaped section steel, I-shaped section steel, steel pipes and section steel. After adopting this kind of structure, the design flexibility of steel pipe concrete composite column or shaped steel concrete column, the commonality is high.
A construction method of a composite column concrete beam node structure comprises the following steps: s1: determining the cross-sectional area of the annular steel bars or the steel belts and the diameter, the number and the reinforcement combining intervals of the adopted annular steel bars according to the stressed longitudinal reinforcements of the concrete beam; determining the diameter of a sleeve ring of the annular steel bar or the steel strip; s2: determining the length of the stressed longitudinal rib extending into the steel pipe concrete superposed column or the steel pipe concrete column, and meeting the requirements of a spot welding buckle anchoring structure or a bending buckle anchoring structure of the stressed longitudinal rib; adopting a spot welding anchoring structure, and attaching fillet welding short steel bars on two sides of the end part of the stressed longitudinal bar; s3: the annular steel bar or the steel belt is sleeved on the steel pipe or the section steel for installation, and the stressed longitudinal bar extends into the inner side of the annular steel bar or the steel belt; an L-shaped bent buckle anchoring structure is adopted, stressed longitudinal bars on the beam surface are wound around the annular reinforcing steel bars or the steel belts to be vertically bent towards the beam bottom, and stressed longitudinal bars on the beam bottom are wound around the annular reinforcing steel bars or the steel belts to be vertically bent towards the beam top; adopting a [ shaped bending buckle anchoring structure, vertically bending the stressed longitudinal ribs of the beam surface and the stressed longitudinal ribs of the beam bottom until the end parts of the stressed longitudinal ribs and the end parts of the beam bottom are superposed, or adopting full-length steel bars as the stressed longitudinal ribs of the beam surface and the stressed longitudinal ribs of the beam bottom; spot welding and fixing the annular steel bar or the steel belt and the stressed longitudinal bar for forming; s4: installing a steel pipe concrete superposed column or a steel reinforced concrete column template and a concrete beam template on site; s5: and pouring concrete to form an integral rigid steel pipe concrete composite column or a steel concrete column-concrete beam connecting node.
Preferably, when the annular steel bar or the steel strip is sleeved on the steel pipe or the section steel in the step S3, the distance between the inner side of the lantern ring of the annular steel bar or the steel strip and the outer side wall of the steel pipe or the section steel needs to be determined so as to meet the requirements of the spot welding buckle anchoring structure or the bending buckle anchoring structure of the stressed longitudinal bar; in step S4, it is necessary to ensure that the thickness of the concrete protective layer is sufficient outside the collar of the steel hoop or strip.
The principle of the utility model is that: the annular steel bar or steel belt is additionally arranged in the steel tube concrete superposed column or the steel section concrete column, is sleeved and fixed on the periphery of the steel tube or the steel section, and is coaxial or eccentric with the column. The stressed longitudinal bar of the concrete beam is anchored in the concrete outside the steel pipe concrete superposed column or the profile steel concrete column through the annular steel bar or the steel belt buckle, so that the reliable anti-seismic anchoring of the stressed longitudinal bar is realized, and the technical problem that the straight anchoring section of the stressed longitudinal bar of the concrete beam extending into the steel pipe concrete superposed column or the profile steel concrete column cannot meet the requirement of an anti-seismic anchoring structure is solved; the stressed longitudinal bars of the concrete beam are prevented from penetrating through the embedded steel pipes to restrain the concrete or the profile steel; the steel corbels or annular steel plates connected with the stressed longitudinal bars of the concrete beam are prevented from being welded on the steel pipes or the section steel; the thickness of the steel pipe or the peripheral concrete of the section steel is prevented from being increased for ensuring the anchoring length of the steel bar.
In general, the utility model has the advantages as follows:
1. the stressed longitudinal bar of the concrete beam is anchored by adopting the annular steel bar or the steel belt buckle, the node structure is simple, the stress is clear, and the structural constraint required by the stressed longitudinal bar anti-seismic straight anchor section of the concrete beam in the steel pipe concrete composite column or the steel concrete column is successfully solved. The steel pipe or the shaped steel in the annular steel bar or the steel band has no shape requirement, the section size of the steel pipe or the shaped steel in the concrete filled steel tube composite column or the shaped steel concrete column can be flexibly designed, the different bearing capacity design requirements and the different structural space design requirements of the concrete filled steel tube composite column or the shaped steel concrete column are met, the universality is very high, and the space adaptability of the beam column node can be improved.
2. The stressed longitudinal bars of the concrete beam in the node do not need to penetrate through embedded steel tube restrained concrete or profile steel, the section of the steel tube or the profile steel is not weakened, and the bearing capacity of the steel tube concrete composite column or the profile steel concrete column in the node area is guaranteed; the concrete beam can reasonably and reliably transfer the bending moment and the shearing force of the beam end, and the bearing capacity is high in safety reserve; the node has good overall anti-seismic performance, and can fully ensure the anti-seismic design principle of strong node weak members.
3. The stressed longitudinal bars of the concrete beam in the node do not need to penetrate through embedded steel pipes to restrain concrete or profile steel, the outer side walls of the steel pipes or the profile steel do not need to be welded with stiffening plates or other connecting pieces, node construction can be greatly simplified, the on-site welding workload is remarkably reduced, the construction difficulty is reduced, the construction efficiency is improved, and the construction cost of the beam column node are also saved.
4. The beam column node structure is widely applied, and the structure of the stressed longitudinal bar of the reinforced bar or steel belt buckle anchored concrete beam can be expanded and applied to a steel tube concrete column-concrete ring beam node, a steel tube concrete shear wall-concrete coupling beam node, a section steel concrete shear wall-concrete coupling beam node and the like.
Drawings
Figure 1 is a top view of a square composite column containing round steel tube concrete.
FIG. 2 is a top view of a concrete square column including Cross-shaped steel sections.
Fig. 3 is a cross-sectional view schematically illustrating the spot-welded snap-in anchoring structure for the ring-shaped reinforcing bars or the steel strips in fig. 1 and 2.
Figure 4 is a detail of the construction at a in figure 3 (steel hoop or steel strip).
Fig. 5 is a schematic cross-sectional view of the L-shaped buckle anchor structure of the steel bar or strip buckle of fig. 1 and 2.
Fig. 6 is a detail of the construction at B in fig. 5 (ring steel bars or strips).
Fig. 7 is a cross-sectional view of the buckle [ buckle anchor configuration ] of the ring-shaped reinforcing steel bar or steel strip in fig. 1 and 2.
Fig. 8 is a detail of the construction at C in fig. 7 (ring steel bars or strips).
Fig. 9 is a top view of a square composite column containing square concrete filled steel tubes.
Figure 10 is a top view of a circular composite column containing round steel tube concrete.
Fig. 11 is a top view of a round, composite column containing square concrete filled steel tubes.
FIG. 12 is a top view of a concrete square column containing I-section steel.
FIG. 13 is a top view of a concrete circular column containing Cross-shaped steel sections.
The reference numbers and corresponding part names in the figures are: the steel beam comprises a square superposed column 1, a circular steel tube 2, an annular reinforcing steel bar 3, an annular steel strip 4, a concrete beam 5, a stressed longitudinal rib 6, a stressed longitudinal rib 7, a stressed longitudinal rib 8, a stressed longitudinal rib 11, a circular superposed column 21, a square steel tube 22, cross-shaped steel 23 and I-shaped steel, wherein the stressed longitudinal rib is a stressed longitudinal rib on the beam surface, the stressed longitudinal rib is a stressed longitudinal rib on the beam bottom, and the circular superposed column 11. In the figure, d is the diameter of the stressed longitudinal rib, and h is the length of the vertical segment (h is more than or equal to 20 d).
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
A concrete filled steel tube composite column-concrete beam node structure, as shown in fig. 1, 3 and 4, comprising: the concrete-filled steel tube composite column comprises a concrete-filled steel tube composite column, a concrete beam and an annular steel bar or steel belt. The annular reinforcing steel bars are centrosymmetric and annular, are sleeved and fixed on the periphery of the circular steel tube and are coaxially arranged with the concrete filled steel tube laminated column, the stressed longitudinal reinforcing steel bars of the concrete beam are buckled on the annular reinforcing steel bars or the steel belts and anchored in the concrete filled steel tube laminated column, and the stressed longitudinal reinforcing steel bars transmit main tensile force through the annular reinforcing steel bars or the steel belts. One section short steel bar of muscle tip welding is indulged to the atress, and the diameter of short steel bar equals the diameter that the muscle was indulged to the atress (d equals 20mm), and two-sided fillet welding seam length equals 100mm, and short steel bar, annular reinforcing bar spot welding are fixed on the muscle is indulged to the atress, form spot welding buckle anchor structure. 2 annular reinforcing steel bars are adopted, and the clear distance between the annular reinforcing steel bars is equal to 30 mm.
The construction method of the beam node structure comprises the following steps:
s1: determining the cross-sectional area of the annular steel bars or the steel belts and the diameter, the number and the reinforcement combining intervals of the adopted annular steel bars according to the stressed longitudinal reinforcements of the concrete beam; determining the diameter of a sleeve ring of the annular steel bar or the steel belt, wherein the inner side of the annular steel bar has enough space with the outer side wall of the steel pipe, so that the requirement of a spot welding buckle anchoring structure of the stressed longitudinal bar of the concrete beam is met; the outer side of the annular reinforcing steel bar has enough concrete protection layer thickness.
S2: determining the length of the stressed longitudinal bar extending into the concrete-filled steel tube composite column, and meeting the requirements of a spot welding buckle anchoring structure of the stressed longitudinal bar; and adopting a spot welding anchoring structure, and fillet welding short steel bars are stuck to two sides of the end part of the stressed longitudinal bar.
S3: the annular steel bar or the steel belt is sleeved on the steel pipe or the section steel for installation, and the stressed longitudinal bar extends into the inner side of the annular steel bar or the steel belt; and spot welding and fixing the stressed longitudinal bars of the annular reinforcing steel bars and the concrete beam for forming.
S4: and installing a template of the steel pipe concrete superposed column and a template of the concrete beam on site.
S5: and pouring concrete to form the integrally rigid steel pipe concrete composite column-concrete beam connecting node.
Example two
As shown in fig. 1, 5 and 6, a short steel bar is welded at the end of a stressed longitudinal bar of a concrete beam, the diameter of the short steel bar is equal to the diameter of the stressed longitudinal bar (d is 20mm), the length of a double-sided fillet welding seam is equal to 100mm, the stressed longitudinal bar bypasses an annular steel belt and is vertically bent in a concrete-filled steel tube superposed column to form an L-shaped bent buckle anchoring structure. The stressed longitudinal ribs of the beam surface and the stressed longitudinal ribs of the beam bottom are vertically bent to the beam bottom and the beam top respectively, and the length of each vertical section is equal to 400 mm. The cross section area of the annular steel bar or the steel belt is 700mm2。
The construction method of the beam node structure comprises the following steps:
s1: determining the cross-sectional area of the annular steel bars or the steel belts and the diameter, the number and the reinforcement combining intervals of the adopted annular steel bars according to the stressed longitudinal reinforcements of the concrete beam; determining the diameter of a sleeve ring of the annular steel bar or the steel belt, wherein the inner side of the annular steel bar has enough space with the outer side wall of the steel pipe, so that the requirement of a bending buckle anchoring structure of the stressed longitudinal bar of the concrete beam is met; the outer side of the annular reinforcing steel bar has enough concrete protection layer thickness.
S2: determining the length of the stressed longitudinal bar extending into the concrete-filled steel tube composite column, and meeting the requirement of a bent buckle anchoring structure of the stressed longitudinal bar; the L-shaped bent buckle anchoring structure is adopted, the stressed longitudinal bar on the beam surface is wound around the annular steel bar or the steel belt and is vertically bent towards the beam bottom, and the stressed longitudinal bar on the beam bottom is wound around the annular steel bar or the steel belt and is vertically bent towards the beam top.
S3: the annular steel bar or the steel belt is sleeved on the steel pipe or the section steel for installation, and the stressed longitudinal bar extends into the inner side of the annular steel bar or the steel belt; and spot welding and fixing the stressed longitudinal bars of the annular reinforcing steel bars and the concrete beam for forming.
S4: and (3) installing a steel pipe concrete superposed column template and a concrete beam template on site.
S5: and pouring concrete to form the integrally rigid steel pipe concrete composite column-concrete beam connecting node.
The parts that are not mentioned in this embodiment are the same as those in the first embodiment, and are not described herein again.
EXAMPLE III
As shown in fig. 1, 7 and 8, the stressed longitudinal bars of the concrete beam are full-length steel bars in the concrete-filled steel tube composite column, and are vertically bent and extended into the concrete-filled steel tube composite column by bypassing the annular steel belt to form a [ shape-bent buckle anchoring structure.
The construction method of the beam node structure comprises the following steps:
s1: determining the cross-sectional area of the annular steel bars or the steel belts and the diameter, the number and the reinforcement combining intervals of the adopted annular steel bars according to the stressed longitudinal reinforcements of the concrete beam; determining the diameter of a sleeve ring of the annular steel bar or the steel belt, wherein the inner side of the annular steel bar has enough space with the outer side wall of the steel pipe, so that the requirement of a bending buckle anchoring structure of the stressed longitudinal bar of the concrete beam is met; the outer side of the annular reinforcing steel bar has enough concrete protection layer thickness.
S2: determining the length of the stressed longitudinal bar extending into the concrete-filled steel tube composite column, and meeting the requirement of a bent buckle anchoring structure of the stressed longitudinal bar; the vertical stressed longitudinal bars on the beam surface and the vertical stressed longitudinal bars on the beam bottom are respectively bent around the annular reinforcing steel bars or the steel strips by adopting a [ shaped bending buckle anchoring structure ].
S3: the annular steel bar or the steel belt is sleeved on the steel pipe or the section steel for installation, and the stressed longitudinal bar extends into the inner side of the annular steel bar or the steel belt; and spot welding and fixing the stressed longitudinal bars of the annular reinforcing steel bars and the concrete beam for forming.
S4: and (3) installing a steel pipe concrete superposed column template and a concrete beam template on site.
S5: and pouring concrete to form the integrally rigid steel pipe concrete composite column-concrete beam connecting node.
The parts that are not mentioned in this embodiment are the same as those in the first embodiment, and are not described herein again.
In addition to the above-mentioned manner, as shown in fig. 9 to 13, the steel pipe may be a square steel pipe, the laminated column may be a square, and the section steel may be i-shaped section steel or cross-shaped section steel. These variations are all within the scope of the present invention.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (8)
1. A composite column concrete beam node construction, comprising: the steel tube concrete superposed column or the steel concrete column, the concrete beam and the annular steel bar or the steel belt; the annular steel bars or the steel belts and the steel pipe concrete superposed columns or the steel reinforced concrete columns are coaxially arranged in the steel pipe concrete superposed columns or the steel reinforced concrete columns, the stressed longitudinal bars of the concrete beams are buckled in the annular steel bars or the steel belts and anchored in the steel pipe concrete superposed columns or the steel reinforced concrete columns, and the stressed longitudinal bars transmit main tensile force through the annular steel bars or the steel belts.
2. The composite column concrete beam node construction of claim 1, wherein: the column core of the steel tube concrete composite column is steel tube concrete, and the column core of the steel tube concrete column is profile steel; the annular steel bar or steel belt is positioned in the concrete at the periphery of the section steel or steel pipe.
3. The composite column concrete beam node construction of claim 1, wherein: one end of the stressed longitudinal bar of the concrete beam, which is buckled on the annular steel bar or the steel belt, is welded with a section of short steel bar which is buckled on the annular steel bar or the steel belt; the length of the double-sided fillet welding seam of the short steel bar is determined by the calculated tension of the stressed longitudinal bar; when the diameter of the short steel bar is the same as that of the stressed longitudinal bar, the length of the double-sided fillet welding seam is not less than 5 times of the diameter of the stressed longitudinal bar; the number of the horizontal parallel ribs of the annular steel bars is not more than 3, the clear distance between the annular parallel ribs is not less than 30mm, and is more than or equal to 1.5 times of the diameter of the annular steel bars.
4. A composite column concrete beam node construction according to claim 3, wherein: and spot welding and fixing the stressed longitudinal bar of the concrete beam and the annular steel bar or the steel belt to form a spot welding buckle anchoring structure.
5. A composite column concrete beam node construction according to claim 3, wherein: the end part of the stressed longitudinal bar of the concrete beam bypasses the annular reinforcing bar or the steel belt to be vertically bent in the steel pipe concrete composite column or the steel concrete column, and the stressed longitudinal bar of the beam surface and the stressed longitudinal bar of the beam bottom are vertically bent to the beam bottom and the beam top of the concrete beam in a staggered mode respectively to form an L-shaped bent buckle anchoring structure.
6. The composite column concrete beam node construction of claim 1, wherein: the end part of the stressed longitudinal bar of the concrete beam bypasses the annular steel bar or the steel belt to be vertically bent in the steel pipe concrete composite column or the steel concrete column, the stressed longitudinal bar of the beam surface and the stressed longitudinal bar of the beam bottom are respectively and vertically bent until the end parts of the stressed longitudinal bar and the stressed longitudinal bar of the beam bottom are superposed, or the stressed longitudinal bar of the beam surface and the stressed longitudinal bar of the beam bottom are through-length steel bars, so that a [ -shaped bent buckle anchoring structure is formed.
7. The composite column concrete beam node construction of claim 1, wherein: the cross-sectional areas of the annular steel bars and the steel belts are determined by calculating the tension of the stressed longitudinal bars.
8. The composite column concrete beam node construction of claim 2, wherein: the steel pipe concrete superposed column is round, square or rectangular, and the embedded steel pipe is round, square or rectangular; the section steel concrete column is in a shape formed by combining Cross-shaped section steel, I-shaped section steel, a steel pipe and section steel in various ways.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920257765.1U CN210086482U (en) | 2019-03-01 | 2019-03-01 | Laminated column concrete beam node structure |
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| CN201920257765.1U CN210086482U (en) | 2019-03-01 | 2019-03-01 | Laminated column concrete beam node structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853740A (en) * | 2019-03-01 | 2019-06-07 | 华南理工大学 | A kind of superposed column concrete girder connection construction and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853740A (en) * | 2019-03-01 | 2019-06-07 | 华南理工大学 | A kind of superposed column concrete girder connection construction and construction method |
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