CN221298685U - Adjustable connection structure of newly-increased steel beam and existing concrete column - Google Patents
Adjustable connection structure of newly-increased steel beam and existing concrete column Download PDFInfo
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- CN221298685U CN221298685U CN202323095531.7U CN202323095531U CN221298685U CN 221298685 U CN221298685 U CN 221298685U CN 202323095531 U CN202323095531 U CN 202323095531U CN 221298685 U CN221298685 U CN 221298685U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 101
- 239000010959 steel Substances 0.000 title claims abstract description 101
- 239000000126 substance Substances 0.000 claims description 17
- 230000035515 penetration Effects 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 238000003466 welding Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Abstract
The utility model relates to an adjustable connecting structure of a newly-added steel beam and an existing concrete column, which can be used for connecting the newly-added beam and the existing concrete column in a local layer of the structure. Compared with the prior art, the utility model releases the relative deformation between the existing concrete column and the newly added steel beam in an adjustable connection mode, thereby releasing the earthquake force transmitted to the steel beam by the existing concrete column in the earthquake process, enabling the steel beam to be only subjected to the action of vertical force, further greatly reducing the section size of the steel beam, having good economical efficiency, being convenient for site construction and installation and having great popularization and application value.
Description
Technical Field
The utility model relates to the technical field of connection of steel beams and concrete columns, in particular to an adjustable connection structure of a newly added steel beam and an existing concrete column.
Background
Along with the continuous promotion of building improvement in recent years, the demand for building interlayer improvement is increased, and the current common interlayer adding method is mainly divided into a new concrete beam plate structure, a new steel beam and a combined floor slab. The newly added concrete structure has larger influence on the existing structure due to larger dead weight, and simultaneously has large wet operation workload, thereby having larger influence on the construction period, and the section of the concrete member is usually larger, thereby having adverse influence on the use clear height after the interlayer is added.
At present, more common practice is to adopt a hinged connection mode between a steel beam and an original structural column, specifically to set a connecting plate and a bracket on the original column through chemical bolts, and the steel beam is connected with the connecting plate bracket through high-strength bolts. The connecting mode has the advantages that the connecting mode is simple and quick to install, no wet operation is performed, meanwhile, the section of the steel beam is smaller, the space clearance is facilitated, but because the hinged connecting mode is adopted between the beams and the columns, when horizontal seismic force is applied to the beams and the columns, the newly added steel beam can generate horizontal force on the existing concrete column, so that the stress mode of the existing concrete column is changed, unnecessary horizontal shearing force is generated, the mode of the original concrete and the existing steel beam for mixing and resisting side force is formed, the force transmission path and the rigidity distribution are fuzzy, and the calculation and the analysis are not facilitated; moreover, when there is the error in on-the-spot post interval and girder steel length, the two sizes can't be adjusted to the connecting plate, consequently need carry out the unloading to girder steel length after the actual measurement to post interval on site to lead to the work load big, the efficiency of construction is low.
Patent CN217782399U discloses a girder steel and concrete column connection structure, including the concrete column that has the steel sleeve, the steel sleeve is in the position on the concrete column with the link of girder steel that will connect corresponds, steel sleeve and concrete column are pour into an organic wholely, the cross section of steel sleeve with the cross section of concrete column is unanimous and is rectangular form, its be used for with install on the lateral surface of the curb plate that the girder steel is connected be connected with be used for with the girder steel carries out bolted connection's connecting plate, the connecting plate with the lateral surface is perpendicular. But does not have the technical effect of achieving an anti-seismic effect using a steel beam of smaller dimensions.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide an adjustable connecting structure of a newly-added steel beam and an existing concrete column, which can be used for connecting the newly-added steel beam and the existing concrete column in a local layer of the structure, and release the relative deformation between the existing concrete column and the newly-added steel beam in an adjustable connecting mode, so that the earthquake force transmitted to the steel beam by the existing concrete column in the earthquake process is released, the section size of the steel beam can be greatly reduced by the vertical force of the steel beam, the economic efficiency is good, and the site construction and the installation are convenient, and the popularization and application values are great.
The aim of the utility model can be achieved by the following technical scheme:
The utility model provides an adjustable connecting structure for a newly-added steel beam and an existing concrete column, which comprises a steel beam, a concrete column and a T-shaped steel connecting plate, wherein the steel beam is connected with the concrete column through the T-shaped steel connecting plate;
The T-shaped steel connecting plate comprises a T-shaped connecting plate flange plate and a T-shaped connecting plate web plate perpendicular to the T-shaped connecting plate flange plate, and the T-shaped connecting plate flange plate is welded with the T-shaped connecting plate web plate;
the T-shaped connecting plate flange plate is provided with an anchor hole, and a rear anchor connecting element penetrates through the anchor hole to fix the T-shaped connecting plate flange plate on the concrete column;
The T-shaped connecting plate web plate is provided with a slotted hole, the slotted hole is provided with a bolt, and the T-shaped connecting plate web plate is adjustably connected with the steel beam through the slotted hole and the bolt.
Further, the rear anchor connecting member is an M20 reverse taper chemical anchor, the M20 reverse taper chemical anchor is an inverted taper chemical anchor having an M20 thread (a thread with a diameter of 20 mm) for fixing and supporting in a base material such as concrete or masonry, and is made of metal having an inverted taper shape, and the reverse taper chemical anchor is made to chemically react with a surrounding concrete material by injecting a chemical into a pre-drilled hole, thereby forming a firm connection.
Further, two oblong holes are arranged and are respectively arranged at 1/3 and 2/3 of the height of the central edge of the web plate of the T-shaped connecting plate.
Further, the length of the oblong hole is 100mm, and the height is 24mm.
Further, the anchor bolt holes are four, and are respectively arranged at four corners of the flange plate of the T-shaped connecting plate.
Further, the diameter of the anchor hole is 22mm.
Further, the T-shaped connecting plate flange plate and the T-shaped connecting plate web are welded through the full penetration groove, in the welding process, the base materials at two sides of the groove are completely melted, and proper filling materials are added, so that the connection of a welded joint is realized, and the grade of a welding seam is one grade.
Further, the T-shaped connecting plate flange plate is a T-shaped connecting plate flange plate with the length of 200x300x16mm, the width of 300mm and the thickness of 16mm, and the T-shaped connecting plate web plate is a 190x240x12 mmT-shaped connecting plate web plate, namely the length of 190mm, the width of 240mm and the thickness of 12mm.
Further, the T-shaped steel connecting plate is a Q355B steel plate, and has high strength and good weldability.
Further, the bolts were 8.8 grade M22 common bolts, i.e., conforming to the 8.8 grade strength grade and M22 thread specification, the 8.8 grade representing the strength grade of the bolts representing a minimum tensile strength of 800MPa, and M22 representing a diameter of 22mm.
The field construction steps are as follows:
S1: and placing the flange plate of the T-shaped connecting plate on the concrete column, respectively driving 4M 20 inverted cone-shaped chemical anchor bolts into the concrete column in the anchor bolt holes, and completely fixing the T-shaped steel connecting plate and the concrete column.
S2: and aligning the web plate of the steel beam with the position of the oblong hole, and connecting the web plate of the steel beam with the web plate of the T-shaped connecting plate by adopting 8.8-grade M22 common bolts. Finally, the adjustable connection form of the steel beam and the concrete column is formed.
Because this connected mode adopts slotted hole and ordinary bolt to be connected newly-increased girder steel and T shape steel connecting plate, receives the earthquake action when the structure, can take place to slide between roof beam and post and warp in slotted hole department, forms the form of slip hinge support, can release the earthquake completely to newly-increased girder steel's horizontal force, and then can consider the girder steel only to bear vertical effort, can further reduce the roof beam height, promotes lower floor space clear height. Meanwhile, due to the existence of the slotted holes, when the space between the existing concrete columns and the length of the newly added steel beam are in error, the positioning of the bolts can be adjusted through the slotted holes, errors are digested, and then the steel beam installation efficiency is improved.
Compared with the prior art, the utility model has the following advantages:
(1) The utility model has good construction operability, and the relative deformation between the existing concrete column and the newly added steel beam is released by arranging the oblong holes on the T-shaped connecting steel plates in an adjustable connection mode, so that the earthquake force transmitted to the steel beam by the existing concrete column in the earthquake process is released, the steel beam is only subjected to the action of vertical force, the section size of the steel beam can be greatly reduced, the economy is good, the beam height can be further reduced, and the net height of the lower space is improved.
(2) Due to the existence of the slotted holes, the dimension error between the newly-added steel beam and the existing concrete column can be adjusted, the on-site construction and installation are facilitated, the steel beam installation efficiency is improved through the positioning of the slotted holes and the adjusting bolts, and the method has great popularization and application values.
Drawings
FIG. 1 is an elevation view of an adjustable connection structure of a newly added steel beam and an existing concrete column.
Fig. 2 is a top view of an adjustable connection structure of a newly added steel beam and an existing concrete column.
Fig. 3 is a schematic structural view of a T-shaped connection steel plate.
Reference numerals: the concrete column comprises a 1-concrete column, a 21-steel beam flange plate, a 22-steel beam web plate, a 3-T-shaped steel connecting plate, a 31-T-shaped connecting plate flange plate, a 32-T-shaped connecting plate web plate, 33-oblong holes, 34-anchor bolt holes, 41-M20 reverse taper chemical anchor bolts and 5-bolts.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. Features such as a part model, a material name, a connection structure, a control method, an algorithm and the like which are not explicitly described in the technical scheme are all regarded as common technical features disclosed in the prior art.
Example 1
The embodiment provides an adjustable connection structure of a newly added steel beam and an existing concrete column 1, which can be used for connecting the newly added steel beam and the existing concrete column 1 in a local layer of the structure, and comprises the steel beam and the concrete column 1 as shown in fig. 1 and 2, and further comprises a T-shaped steel connecting plate 3, wherein the steel beam and the concrete column 1 are connected through the T-shaped steel connecting plate 3.
The steel beam comprises a steel beam web 22 and two steel beam flange plates 21 which are fixedly connected with the upper end and the lower end of the steel beam web 22 respectively and are perpendicular to the steel beam web 22.
As shown in fig. 3, the T-shaped steel connecting plate 3 includes a T-shaped connecting plate flange plate 31 and a T-shaped connecting plate web 32 perpendicular to the T-shaped connecting plate flange plate 31, the T-shaped connecting plate flange plate 31 and the T-shaped connecting plate web 32 are welded by full penetration grooves, in the welding process, the base materials on both sides of the grooves are completely melted, and appropriate filling materials are added to realize the connection of welded joints, and the grade of the welding seam is one grade. T-shaped connecting plate flange plate 31 is 200X300X16mm T-shaped connecting plate flange plate, namely, the length is 200mm, the width is 300mm, the thickness is 16mm, T-shaped connecting plate web 32 is 190X240X12 mmT-shaped connecting plate web, namely, the length is 190mm, the width is 240mm, and the thickness is 12mm.
Four anchor bolt holes 34 are formed in the T-shaped connecting plate flange plate 31 and are respectively formed in four corners of the T-shaped connecting plate flange plate 31, the diameters of the anchor bolt holes 34 are 22mm, an M20 reverse taper chemical anchor bolt 41 penetrates through the anchor bolt holes 34 to fix the T-shaped connecting plate flange plate 31 on a concrete column 1, the M20 reverse taper chemical anchor bolt 41 is a reverse taper chemical anchor bolt with an M20 thread (the thread with the diameter of 20 mm), the reverse taper chemical anchor bolt is used for fixing and supporting in base materials such as concrete or masonry and is made of metal, the reverse taper chemical anchor bolt has a reverse taper shape, and chemical substances are injected into pre-drilled holes to enable the reverse taper chemical anchor bolt to react with surrounding concrete materials to form firm connection.
Two oblong holes 33 are formed in the T-shaped connecting plate web plate 32, the two oblong holes are respectively formed in 1/3 and 2/3 of the height of the central edge of the T-shaped connecting plate web plate 32, bolts 5 are arranged on the oblong holes 33, and the T-shaped connecting plate web plate 32 is connected with a steel beam in an adjustable mode through the oblong holes 33 and the bolts 5. The oblong hole 33 has a length of 100mm and a height of 24mm.
In a specific embodiment, the T-shaped steel connecting plate 3 is a Q355B steel plate, and has high strength and good weldability. The bolt 5 is an 8.8 grade M22 common bolt, namely, meets the 8.8 grade strength grade and the M22 thread specification, wherein the 8.8 grade represents the strength grade of the bolt 5, represents the minimum tensile strength of 800MPa, and the M22 represents the diameter of the bolt 5 as 22mm.
The field construction steps are as follows:
S1: the T-shaped connecting plate flange plate 31 is arranged on the concrete column 1, 4M 20 reverse taper chemical anchor bolts 41 are respectively driven into the concrete column 1 in anchor bolt holes 34, and the T-shaped steel connecting plate 3 and the concrete column 1 are completely fixed.
S2: the web plate of the steel beam is aligned with the position of the oblong hole 33, and the web plate of the steel beam is connected with the web plate 32 of the T-shaped connecting plate by adopting 8.8 grade M22 common bolts. Finally, the adjustable connection form of the steel beam and the concrete column 1 is formed.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. An adjustable connecting structure for a newly added steel beam and an existing concrete column comprises a steel beam and a concrete column (1), and is characterized by further comprising a T-shaped steel connecting plate (3), wherein the steel beam and the concrete column (1) are connected through the T-shaped steel connecting plate (3);
The T-shaped steel connecting plate (3) comprises a T-shaped connecting plate flange plate (31) and a T-shaped connecting plate web (32) perpendicular to the T-shaped connecting plate flange plate (31), and the T-shaped connecting plate flange plate (31) and the T-shaped connecting plate web (32) are welded and connected;
An anchor bolt hole (34) is formed in the T-shaped connecting plate flange plate (31), and a rear anchor connecting element penetrates through the anchor bolt hole (34) to fix the T-shaped connecting plate flange plate (31) on the concrete column (1);
The T-shaped connecting plate web plate (32) is provided with a slotted hole (33), the slotted hole (33) is provided with a bolt (5), and the T-shaped connecting plate web plate (32) is connected with the steel beam in an adjustable mode through the slotted hole (33) and the bolt (5).
2. An adjustable connection of a newly added steel girder to an existing concrete column according to claim 1, characterized in that the rear anchoring connection element is an M20 inverted cone chemical anchor bolt (41).
3. The adjustable connecting structure of the newly added steel beam and the existing concrete column according to claim 1, wherein two oblong holes (33) are respectively arranged at 1/3 and 2/3 of the height of the central edge of the web plate (32) of the T-shaped connecting plate.
4. An adjustable connection structure for a newly added steel girder and an existing concrete column according to claim 1, wherein the length of the oblong hole (33) is 100mm and the height is 24mm.
5. The adjustable connecting structure of the newly added steel beam and the existing concrete column according to claim 1, wherein four anchor bolt holes (34) are respectively arranged at four corners of the T-shaped connecting plate flange plate (31).
6. An adjustable connection of a newly added steel girder to an existing concrete column according to claim 1, characterized in that the diameter of the anchor holes (34) is 22mm.
7. The adjustable connecting structure of the newly added steel beam and the existing concrete column according to claim 1, wherein the T-shaped connecting plate flange plate (31) and the T-shaped connecting plate web (32) are welded through full penetration grooves.
8. The adjustable connecting structure of a newly added steel beam and an existing concrete column according to claim 1, wherein the T-shaped connecting plate flange plate (31) is a T-shaped connecting plate flange plate with a thickness of 200x300x16mm, and the T-shaped connecting plate web (32) is a 190x240x12 mmT-shaped connecting plate web.
9. The adjustable connecting structure for the newly added steel beam and the existing concrete column according to claim 1, wherein the T-shaped steel connecting plate (3) is a Q355B steel plate.
10. The adjustable connecting structure of a newly added steel beam and an existing concrete column according to claim 1, wherein the bolts (5) are 8.8-level M22 common bolts.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221298685U true CN221298685U (en) | 2024-07-09 |
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