CN113482170A - Construction method of outwards-extending connecting piece of stiff concrete joint - Google Patents
Construction method of outwards-extending connecting piece of stiff concrete joint Download PDFInfo
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- CN113482170A CN113482170A CN202110815976.4A CN202110815976A CN113482170A CN 113482170 A CN113482170 A CN 113482170A CN 202110815976 A CN202110815976 A CN 202110815976A CN 113482170 A CN113482170 A CN 113482170A
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- 239000004567 concrete Substances 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 238000003466 welding Methods 0.000 claims abstract description 38
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 7
- 238000005493 welding type Methods 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000004873 anchoring Methods 0.000 description 7
- 210000003205 muscle Anatomy 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
Abstract
The invention relates to a construction method of a stiff concrete node overhanging type connecting piece, belongs to the technical field of building construction, solves the problem that a stiff concrete node collides with a steel rib when a longitudinal bar is anchored and cannot be directly anchored in a column due to condition limitation, can be used for processing the problem of collision between various steel bars and the steel rib, and reduces the difficulty of site construction. The method comprises the following steps: firstly, determining the connection mode of the beam longitudinal ribs and the connecting piece according to the elevation and the arrangement of the beam longitudinal ribs, determining the number and the vertical position of sleeves if sleeve connection is adopted, determining the distance between the sleeves and the distance of the edge of a node plate according to the diameter of the beam longitudinal ribs, and determining the size of a sleeve type connection node plate; if the welding connection is adopted, the space and the size of the welding type connection node plate are determined in the same way; then, determining the sizes and the number of the rest node plates of the column steel bones for connection; and finally, welding all the sleeves, the gusset plates and the column steel bones, thereby completing the construction of the outwards extending type connecting piece of the stiff concrete node.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a stiff concrete node overhanging type connecting piece.
Background
With the rapid development of urbanization, super high-rise buildings are emerging continuously, a mixed structure with a steel frame and a reinforced concrete cylinder as main structural systems is widely applied to the super high-rise buildings, in order to meet the requirements of earthquake resistance and ductility of the structure and further reduce the structural section, a large number of stiff steel structures are often added into the super high-rise reinforced concrete structure, and although the requirements on structural design are well met, the construction of the reinforced concrete structure is also difficult. In a stiff concrete node, one obvious characteristic is that a longitudinal bar needs to be anchored under the condition of colliding with profile steel, the existing method for using more is to perform straight anchoring or bent anchoring on the longitudinal bar under the condition of meeting the requirement of standard anchoring length, weld the longitudinal bar by using an external connecting plate under the condition of meeting the requirement of welding seam length, weld a sleeve on the steel bar and connect the longitudinal bar under the condition of meeting the cutting angle and the interval of the sleeve, in the actual design, the situations that the conditions of various anchoring modes cannot be met due to the fact that the concrete section is small, the profile steel section is large or the longitudinal bar is crossed seriously exist, and the existing method cannot be used for anchoring the longitudinal bar.
Therefore, it is necessary to develop a construction method for the overhanging type connecting piece of the stiff concrete node, and when the longitudinal bars cannot be anchored in the stiff concrete node by using the traditional method, the anchoring problem of the longitudinal bars under different conditions is solved.
Disclosure of Invention
The invention aims to provide a construction method of an overhanging type connecting piece of a stiff concrete node, which solves the problem that the stiff concrete node collides with steel ribs when longitudinal bars are anchored and cannot be directly anchored in a column due to condition limitation, can be used for treating the problem of collision between various steel bars and the steel ribs, and reduces the difficulty of site construction.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a construction method of an overhanging type connecting piece of a stiff concrete node comprises the following steps:
step S1, determining the welding connection or the sleeve connection between the beam longitudinal ribs and the connecting piece according to the elevation and the arrangement of the beam longitudinal ribs, determining the number and the vertical position of the sleeves if the sleeve connection is adopted, determining the distance between the sleeves and the distance between the edges of the node plates according to the diameter of the beam longitudinal ribs and the specification requirement, and determining the size of the sleeve connection node plates; if the welding connection is adopted, the distance of the longitudinal beam ribs is determined according to the diameter of the longitudinal beam ribs and the specification requirement, and the size of the welding type connection node plate is determined;
step S2, determining the sizes and the number of the other node plates of the column steel bones for connection according to the size of the sleeve type connection node plate or the size and the specific position of the welding type connection node plate;
and step S3, welding and connecting all sleeves and node plates selected in the previous steps with the column steel bones, so that the construction of the outwards-extending type connecting piece of the stiff concrete node is completed.
Further, comprising: when the number of the beam longitudinal bars is less and the requirement of the distance between the sleeves is met, the beam longitudinal bars and the sleeves are connected through the sleeve connection and the overhanging connecting plate.
Further, in some stiff concrete nodes, when the number of longitudinal bars is large and cannot meet the requirement of the distance between sleeves, or when the space of the beam and the column is oblique, the beam steel bars are connected with the overhanging type connecting piece in a welding mode.
Further, when the number of the longitudinal bars of the first row of beams close to the beam top and the beam bottom is large and the requirement of the distance between the sleeves cannot be met, the beam steel bars adopt a composite connecting piece combined by welding connection and sleeve connection.
Furthermore, when the beam top and the beam bottom need the overhanging type connecting piece at the same time, the number of the rows of the sleeves is more, and the beam height is smaller, the sleeves of the beam top and the beam bottom can be welded by using the same connecting piece to form an integral overhanging type connecting piece; when the beam top and the beam bottom need the overhanging type connecting piece simultaneously and the beam height is larger, different connecting pieces can be selected to be used for welding the sleeves of the beam top and the beam bottom to form the split type overhanging type connecting piece.
Further, during construction, when the distance from the edge of the section steel column to the edge of the concrete column is too small due to the fact that the concrete column is small in size or the section steel beam is large in size, the welding plate and the sleeve of the overhanging type connecting piece extend into the outer beam of the column.
Further, when the distance from the section steel column edge to the concrete column edge meets the requirement that the overhanging type connecting piece is completely arranged in the column for welding construction, the beam longitudinal rib stretches into the section steel column for welding connection or sleeve connection.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) the construction method of the outwards extending type connecting piece of the stiff concrete node comprises the following steps of firstly, determining that the beam longitudinal ribs are connected with the connecting piece in a welding mode or in a sleeve mode according to the elevation and the arrangement of the beam longitudinal ribs, determining the number and the vertical position of the sleeves if the beam longitudinal ribs are connected in the sleeve mode, determining the distance between the sleeves and the distance between edges of the node plates according to the specification requirement according to the diameter of the beam longitudinal ribs, and determining the size of the sleeve type connecting node plates; if the welding connection is adopted, the distance of the longitudinal beam ribs is determined according to the diameter of the longitudinal beam ribs and the specification requirement, and the size of the welding type connection node plate is determined; then, determining the sizes and the number of the other node plates of the steel ribs for connection according to the size of the sleeve type connection node plate or the size and the specific position of the welded type connection node plate; and finally, welding all the sleeves and the node plates selected in the previous steps with the column steel bones, so that the construction of the outwards-extending type connecting piece of the stiff concrete node is completed.
(2) According to the construction method of the overhanging type connecting piece of the stiff concrete node, the overhanging type connecting piece can be internally arranged and extended in the column or the beam according to the space size of the actual stiff concrete node, so that the purpose of avoiding the longitudinal reinforcement steel bar of the beam is achieved while reliable connection is realized. The body type of the overhanging type connecting piece is simplified, the obstruction to the pouring of concrete in the column and the pouring of concrete in the beam can be avoided, and the compactness of the concrete pouring in the node area can be well ensured.
(3) According to the construction method of the overhanging type connecting piece of the stiff concrete node, the overhanging type connecting piece is welded on the column steel rib, and the beam longitudinal bars can be connected with the connecting piece by adopting sleeves or can be connected with the connecting piece by adopting a welding mode according to the field construction period and the actual requirement. By adopting the connecting piece, the on-site construction difficulty can be reduced, and the on-site construction efficiency is improved. In addition, the form and the size of the gusset plate can be flexibly selected according to different collision conditions of the longitudinal bars and the steel ribs, steel is saved, and the process is simplified.
(4) The construction method of the overhanging type connecting piece of the stiff concrete node provided by the invention has higher adaptability to the conditions of the change of the column steel skeleton form and the change of the beam internal section steel form. Besides the problem of plane skew between beam reinforcements and columns, the overhanging type sleeve connecting piece can solve the problem of space skew between beam reinforcements and column reinforcements frequently occurring in engineering, namely, the section of the column reinforcements is changed, and meanwhile, the beams and the columns are in a skew relationship, so that the reinforcements in the beams and the columns generate the space skew relationship. The overhanging type connecting piece is not limited by the angle position of the beam and the column, the dimension of the space skew problem is reduced, and the overhanging type connecting piece with the corresponding angle can be adopted, so that the beam longitudinal bar with any angle can be connected with the overhanging type connecting piece, and the site construction is convenient.
Drawings
Fig. 1 is a schematic structural view of split connection in a construction method of an overhanging type connecting piece of a stiff concrete node in the embodiment of the invention;
FIG. 2 is a schematic structural diagram of an external sleeve connection in the construction method of the overhanging type connecting piece of the stiffened concrete node in the embodiment of the invention;
FIG. 3 is a schematic structural diagram of a composite connection in the construction method of the overhanging type connector for a stiff concrete node according to the embodiment of the invention;
FIG. 4 is a schematic structural diagram of a built-in sleeve connection in the construction method of the overhanging type connecting piece of the stiffened concrete node in the embodiment of the invention;
fig. 5 is a schematic elevation view of an overhanging type connecting piece when sleeves are connected in the construction method of the overhanging type connecting piece for the stiffened concrete node in the embodiment of the invention;
fig. 6 is a schematic plan view of the overhanging type connecting piece when the sleeves are connected in the construction method of the overhanging type connecting piece for the stiffened concrete node in the embodiment of the invention.
In the figure:
1-a sleeve; 2-overhanging connecting plates for welding; 3-an overhanging connecting plate for sleeve connection; 4-gusset plate one; and 5-node plate two.
Detailed Description
The construction method of the overhanging type connecting piece of the stiff concrete node provided by the invention is further explained in detail with the accompanying drawings and the specific embodiment. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
The construction method of the overhanging type connector for a stiff concrete joint according to the present invention will be described in detail with reference to fig. 1 to 6.
Example one
The construction method of the overhanging type connecting piece of the stiff concrete node is used for solving the problem that a longitudinal bar in the stiff concrete node cannot be anchored by using a traditional method, namely, when a beam longitudinal bar is anchored, the conditions that the length of a straight anchor or a bent anchor cannot meet the standard requirement, the welding cut angle of a sleeve cannot be less than or equal to 30 degrees, a node plate is used for welding, and the welding length cannot meet the standard requirement are caused. This overhanging formula connecting piece solves reinforcing bar and reinforcing bar collision problem under the multiple condition, and the thinking is as follows specifically to solve:
1. the collision of the beam longitudinal ribs and the variable-section steel beam:
when the shaped steel roof beam becomes high, the roof beam is indulged the muscle and can be collided with the shaped steel roof beam, can't guarantee linking up of roof beam is indulged the muscle, needs to indulge the muscle with the beam connection, because of variable cross section transition region angle is slow partially, great with vertical direction contained angle, can't directly use sleeve 1 to weld in the shaped steel roof beam, adopts an overhanging formula connecting piece this moment, changes "oblique" with shaped steel roof beam connection position and reforms. The distance of arranging is indulged the muscle according to the roof beam, confirms that the muscle is indulged to the roof beam and whether welding or muffjoint with the connecting piece, and when the muscle quantity was indulged to the roof beam was less satisfied 1 interval requirements of sleeve, the roof beam reinforcing bar passes through muffjoint with the sleeve and links board 3 with overhanging formula and be connected, as shown in fig. 1.
2. Collision of the beam longitudinal ribs with the section steel columns:
because in some stiff concrete nodes, the vertical included angle between the oblique beam and the side of the steel column exceeds 30 degrees, the sleeve cannot be directly welded to the steel rib under the condition that part of the beam longitudinal ribs cannot meet the welding conditions of the bent anchor, the straight anchor and the node plate, an overhanging type sleeve connecting piece is adopted to be welded to the steel rib, and the beam longitudinal ribs can be subsequently anchored through welding or the sleeve.
The overhanging type connecting piece in the embodiment is mainly divided into 4 types: split type connecting piece, integral type connecting piece, external connecting piece and built-in connecting piece. In practical application, the type 4 connecting pieces can be combined according to the node condition, for example, the external split sleeve connecting piece in fig. 5 skillfully solves the problem of connecting the reinforcing steel bars of two oblique beams.
The following is a detailed description of four cases with reference to the drawings.
(1) Split type connecting piece
When the beam top or the beam bottom needs the overhanging type connecting piece, or the beam top and the beam bottom need the overhanging type connecting piece at the same time but the beam top and the beam bottom cannot use the same connecting piece due to the factors of higher beam height, existence of section steel beams and the like, the overhanging type connecting piece is respectively arranged according to the anchoring requirement of the beam top and the beam bottom. As shown in fig. 2, when the number of the longitudinal beam ribs is small and the requirement of the distance between the sleeves is met, the sleeves can be used for connection. As shown in fig. 3, when the number of the first row longitudinal ribs near the top of the beam is large and cannot meet the requirement of the distance between the sleeves, the composite connecting piece which is connected with the sleeve 1 by welding and exists at the same time can be adopted, the overhanging type connecting plate 2 for welding is adopted for welding during the welding of the beam steel bars, and the overhanging type connecting plate 3 for sleeve connection is adopted for connecting when the beam steel bars are connected with the sleeve 1.
(2) Integrated connecting piece
When the beam top and the beam bottom need the overhanging type connecting piece simultaneously, the number of the rows of the sleeves is large, and the beam height is small, the sleeves of the beam top and the beam bottom can be welded by using the same gusset plate to form the integral overhanging type connecting piece, so that the processing steps are simplified, and the processing efficiency is improved.
(3) External connecting piece
When the distance from the side of the section steel column to the side of the concrete column is too small due to the small size of the concrete column or the large size of the section steel beam, the welding plate and the sleeve of the overhanging type connecting piece extend into the outer beam of the section steel column, at the moment, only the avoidance of the node plate and the section steel column steel bar needs to be noticed, the beam longitudinal bar is connected with the connecting piece outside the column, and the problem of collision with the column longitudinal bar does not need to be considered.
(4) Built-in connecting piece
The distance from the edge of the section steel column to the edge of the concrete column is proper, the overhanging type connecting piece can be completely welded in the section steel column, the beam steel bar still stretches into the section steel column to be welded or connected with the connecting piece in a sleeve mode, attention needs to be paid to the fact that when narrow steel bars in the inner space of the column are dense, most of the beam steel bar is connected with the connecting piece in a sleeve mode, and in addition, the avoidance problem of longitudinal bars of the beam and the column needs to be comprehensively considered.
Example two
The embodiment provides a construction method of an overhanging type connecting piece, which comprises the following specific steps:
(1) firstly, determining whether the beam longitudinal bars are welded or in sleeve connection with the connecting piece according to the elevation and the arrangement of the longitudinal bars, and if the beam longitudinal bars are in sleeve connection, determining the number and the vertical position of sleeves;
(2) secondly, referring to fig. 3, if the beam longitudinal ribs are welded, the distance between the longitudinal ribs needs to be determined according to the diameter of the longitudinal ribs and the specification requirement, so as to determine the size of the overhanging type connecting plate 2 for welding; if the beam longitudinal ribs are in sleeve connection, the distance between the sleeves and the distance from the edges of the node plates are determined according to the diameter of the longitudinal ribs and the specification requirement, and therefore the size of the overhanging type connecting plate 3 for sleeve connection is determined;
(3) then, determining the sizes of a node plate 4 and a node plate 5 for connecting with the column steel rib according to the specific positions of an overhanging type connecting plate 2 for welding the node and an overhanging type connecting plate 3 for connecting the sleeve;
(4) and finally, welding each gusset plate and the sleeve according to a diagram, namely forming the variable cross-section steel beam overhanging sleeve connecting piece, and finishing the construction of the stiffened concrete node overhanging connecting piece.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (7)
1. A construction method of an overhanging type connecting piece of a stiff concrete node is characterized by comprising the following steps:
step S1, determining the welding connection or the sleeve connection between the beam longitudinal ribs and the connecting piece according to the elevation and the arrangement of the beam longitudinal ribs, determining the number and the vertical position of the sleeves if the sleeve connection is adopted, determining the distance between the sleeves and the distance between the edges of the node plates according to the diameter of the beam longitudinal ribs and the specification requirement, and determining the size of the sleeve connection node plates; if the welding connection is adopted, the distance of the longitudinal beam ribs is determined according to the diameter of the longitudinal beam ribs and the specification requirement, and the size of the welding type connection node plate is determined;
step S2, determining the sizes and the number of the other node plates of the column steel bones for connection according to the size of the sleeve type connection node plate or the size and the specific position of the welding type connection node plate;
and step S3, welding and connecting all sleeves and node plates selected in the previous steps with the column steel bones, so that the construction of the outwards-extending type connecting piece of the stiff concrete node is completed.
2. The construction method according to claim 1, wherein the step S1 includes: when the number of the beam longitudinal bars is less and the requirement of the distance between the sleeves is met, the beam longitudinal bars and the sleeves are connected through the sleeve connection and the overhanging connecting plate.
3. The construction method according to claim 1, wherein when the number of the longitudinal bars is large and cannot meet the requirement of the distance between the sleeves, or the space between the beam and the column is oblique, the beam steel bars are welded and connected with the overhanging type connecting piece.
4. The construction method according to claim 1, wherein when the number of the longitudinal bars of the first row of beams close to the top and the bottom of the beam is large and cannot meet the requirement of the distance between the sleeves, the beam steel bars adopt a composite connecting piece combining welding connection and sleeve connection.
5. The construction method according to claim 1, wherein when the top and bottom of the beam need the overhanging type connecting piece simultaneously and the number of the rows of the sleeves is large and the height of the beam is small, the sleeves of the top and bottom of the beam are welded by using the same connecting piece to form an integral overhanging type connecting piece; when the beam top and the beam bottom need the overhanging type connecting piece simultaneously and the beam height is large, different connecting pieces are selected to be used for welding the sleeves of the beam top and the beam bottom to form the split type overhanging type connecting piece.
6. The construction method according to claim 1, wherein when the distance from the edge of the section steel column to the edge of the concrete column is too small due to the small size of the concrete column or the large size of the section steel beam during construction, the welded plates and the sleeves of the overhanging type connecting pieces extend into the outer beam of the column.
7. The construction method according to claim 1, wherein when the distance from the section steel column edge to the concrete column edge is such that the overhanging type connecting piece is completely arranged in the column for welding construction, the beam longitudinal rib is extended into the section steel column for welding connection or sleeve connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110815976.4A CN113482170A (en) | 2021-07-20 | 2021-07-20 | Construction method of outwards-extending connecting piece of stiff concrete joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110815976.4A CN113482170A (en) | 2021-07-20 | 2021-07-20 | Construction method of outwards-extending connecting piece of stiff concrete joint |
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| CN113482170A true CN113482170A (en) | 2021-10-08 |
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| CN202110815976.4A Pending CN113482170A (en) | 2021-07-20 | 2021-07-20 | Construction method of outwards-extending connecting piece of stiff concrete joint |
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