阅读说明：本技术 套筒灌浆连接的装配式梁柱连接结构 (Sleeve grouting connection's assembled beam column connection structure ) 是由 刘洪涛 侯敬峰 王作虎 廖维张 于 2021-05-07 设计创作，主要内容包括：本发明提供一种套筒灌浆连接的装配式梁柱连接结构,包括：预制梁,包括设置有通孔的核心结构区,所述通孔内安装有套筒,所述核心结构区与所述预制梁一体预制成型；预制下柱,设置于所述核心结构区的第一侧；预制上柱,设置于所述核心结构区的第二侧；所述预制下柱与所述预制上柱靠近所述核心结构区的端部均设置有锚固钢筋,所述锚固钢筋插接于所述套筒内,所述套筒与所述锚固钢筋之间通过灌浆料凝结连接。核心结构区与预制梁一体预制成型,结构的整体性较好。套筒安装在核心结构区内,既可以提高核心结构区的抗剪强度,又可以避免套筒安装在预制柱中刚度不均匀分布的情况,提高了建筑结构的抗震性能。(The invention provides a sleeve grouting connection assembly type beam-column connection structure, which comprises: the prefabricated beam comprises a core structure area provided with a through hole, a sleeve is arranged in the through hole, and the core structure area and the prefabricated beam are integrally prefabricated and molded; a prefabricated lower column arranged on a first side of the core structure area; a prefabricated upper column arranged on the second side of the core structure area; the prefabricated lower column and the prefabricated upper column are close to the end part of the core structure area and are provided with anchoring reinforcing steel bars, the anchoring reinforcing steel bars are inserted into the sleeve, and the sleeve is connected with the anchoring reinforcing steel bars through grouting materials in a condensation mode. The core structure area and the precast beam are integrally precast and formed, and the structural integrity is better. The sleeve is arranged in the core structure area, so that the shear strength of the core structure area can be improved, the condition that the rigidity of the sleeve is unevenly distributed in the prefabricated column can be avoided, and the seismic performance of the building structure is improved.)

1. The utility model provides an assembled beam column connection structure that sleeve grout is connected which characterized in that includes:

the prefabricated beam comprises a core structure area provided with a through hole, a sleeve is arranged in the through hole, and the core structure area and the prefabricated beam are integrally prefabricated and molded;

a prefabricated lower column arranged on a first side of the core structure area;

the prefabricated upper column is arranged on a second side of the core structure area, and the first side and the second side are positioned at two opposite ends of the through hole;

the prefabricated lower column and the prefabricated upper column are close to the end part of the core structure area and are provided with anchoring reinforcing steel bars, the anchoring reinforcing steel bars are inserted into the sleeve, and the sleeve is connected with the anchoring reinforcing steel bars through grouting materials in a condensation mode.

2. The grouted assembled beam-column connection structure of claim 1, wherein structural steel bars are provided in the precast beams, the structural steel bars being disposed throughout in the core structural region in a direction perpendicular to the sleeves.

3. The grouted assembled beam-column connection structure of claim 2, wherein the structural bars adjacent to the first side and the structural bars adjacent to the second side in the core structural region are arranged in parallel and spaced apart, and the length of the sleeves is greater than the spacing between the structural bars.

4. The fabricated beam-column connection structure of grouted sleeves according to claim 1, wherein splicing seams are formed between the prefabricated lower column and the core structure area and between the prefabricated upper column and the core structure area, and the distance between the splicing seams is not less than 20 mm.

5. The assembled beam-column connecting structure connected by grouting sleeves according to claim 4, wherein the sleeves are full-grouting sleeves, grouting holes are arranged at the splicing seams between the prefabricated lower columns and the core structure area, and grout outlet holes are arranged at the splicing seams between the prefabricated upper columns and the core structure area.

6. The fabricated beam-column connection structure of grouted sleeves according to claim 5, wherein the grout outlet holes are uniformly arranged at the splicing seams between the prefabricated upper column and the core structure area.

7. The grout-joined assembled beam column connection according to claim 1, wherein a grout detection pipe is connected to the sleeve, the grout detection pipe extending outside the core structural region.

8. The grout-joined assembled beam column connecting structure of claim 1, wherein the anchoring reinforcement is inserted into the sleeve by a length of at least 8 times a diameter of the anchoring reinforcement.

9. A slip-grouted fabricated beam column connection according to claim 1, wherein the ends of the anchoring bars are provided with a positioning ball.

10. The fabricated beam-column connection structure of a grouted sleeve connection according to claim 9, wherein a groove is provided on the positioning ball along a length direction of the anchoring reinforcing bar.

Technical Field

The invention relates to the technical field of prefabricated concrete structures, in particular to a sleeve grouting connected prefabricated beam-column connecting structure.

Background

Prefabricated components of the prefabricated concrete structure are produced in batches in a factory, and the prefabricated components are assembled on site. The prefabricated concrete structure has the advantages of being green, environment-friendly, short in construction period and the like, and is also an important development direction of building industrialization. Compared with a cast-in-place concrete structure, the integrity of the fabricated concrete structure is poor, and the mechanical property of the structure depends on the mechanical property of the spliced connection part of the prefabricated parts to a great extent. Grout sleeve can carry out effective connection with prefabricated component, but grout sleeve's rigidity is great, can cause the rigidity of connection structure department component to distribute inhomogeneous, and then influences the holistic anti-seismic performance of structure. In the prior art, in order to improve the integrity of the connecting structure, cast-in-place concrete is often adopted in the core area of the prefabricated beam-column joint, the reinforcing steel bars in the core area of the structure are dense, the field construction difficulty is improved, and the progress of construction is seriously influenced by the scheme.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. The invention provides an assembled beam-column connecting structure connected by sleeve grouting. The sleeve is pre-installed in the core structure area, so that the rigidity distribution of the sleeve at the connecting structure is prevented from being uneven, the shear strength of the core structure area is improved, and the integrity of the connecting structure is improved.

To this end, an embodiment of the present invention provides an assembled beam-column connection structure connected by grouting a sleeve, including:

the prefabricated beam comprises a core structure area provided with a through hole, a sleeve is arranged in the through hole, and the core structure area and the prefabricated beam are integrally prefabricated and molded;

a prefabricated lower column arranged on a first side of the core structure area;

the prefabricated upper column is arranged on a second side of the core structure area, and the first side and the second side are positioned at two opposite ends of the through hole;

the prefabricated lower column and the prefabricated upper column are close to the end part of the core structure area and are provided with anchoring reinforcing steel bars, the anchoring reinforcing steel bars are inserted into the sleeve, and the sleeve is connected with the anchoring reinforcing steel bars through grouting materials in a condensation mode.

According to one embodiment of the invention, structural steel bars are arranged in the precast beams, and the structural steel bars are arranged in the core structure area in a full length direction perpendicular to the direction of the sleeves.

According to one embodiment of the invention, the structural steel bars near the first side and the structural steel bars near the second side in the core structural area are arranged in parallel and at intervals, and the length of the sleeve is greater than the distance between the structural steel bars.

According to one embodiment of the invention, splicing seams are formed between the prefabricated lower column and the prefabricated beam and between the prefabricated upper column and the prefabricated beam, and the distance between the splicing seams is not less than 20 mm.

According to one embodiment of the invention, the sleeve is a full grouting sleeve, a grouting hole is arranged at a splicing seam between the prefabricated lower column and the core structure area, and a grout outlet is arranged at a splicing seam between the prefabricated upper column and the core structure area.

According to one embodiment of the invention, the grout outlet holes are uniformly arranged at the splicing seam between the prefabricated upper column and the core structure area.

According to one embodiment of the invention, a grouting test tube is connected to the sleeve, said grouting test tube extending outside the core structural region.

According to one embodiment of the invention, the anchoring bar is inserted into the sleeve over a length of at least 8 times the diameter of the anchoring bar.

According to one embodiment of the invention, the ends of the anchoring bars are provided with positioning balls.

According to one embodiment of the invention, the positioning ball is provided with a groove along the length direction of the anchoring steel bar.

One or more technical solutions in the present invention have at least one of the following technical effects:

the assembled beam-column connecting structure connected by the sleeve in grouting comprises a prefabricated beam, a prefabricated lower column and a prefabricated upper column. Including the core structure district on the precast beam, install the sleeve in the core structure district, the post is connected in the precast beam through grout in sleeve department in the prefabrication lower prop and the prefabrication upper prop, has improved connection structure's construction progress, has shortened construction cycle. The core structure area and the precast beam are integrally precast and formed, and the structural integrity is better. The sleeve is arranged in the core structure area, so that the shear strength of the core structure area can be increased, the condition that the rigidity of the sleeve is unevenly distributed in the prefabricated column can be avoided, and the seismic performance of the building structure is improved.

Drawings

Fig. 1 is a vertical sectional view of a sleeve grouting-connected fabricated beam-column connection structure according to an embodiment of the present invention;

FIG. 2 is a horizontal sectional view of a fabricated beam-column connection structure of a sleeve grouting connection according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a sleeve provided in accordance with an embodiment of the present invention;

fig. 4 is a cross-sectional view of a detent ball provided in an embodiment of the present invention.

Reference numerals:

1. prefabricating a beam; 11. a core structure region; 12. a through hole; 13. a sleeve; 14. grouting material; 15. structural steel bars; 16. grouting holes; 17. a slurry outlet; 10. anchoring the reinforcing steel bars; 101. a positioning ball; 102. a groove; 131. grouting a detection pipe; 2. prefabricating a lower column; 3. and (4) preparing an upper column.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Compared with a cast-in-place concrete structure, the integrity of the fabricated concrete structure is poor, and the mechanical property of the structure depends on the mechanical property of the spliced connection part of the prefabricated parts to a great extent. Grout sleeve can carry out effective connection with prefabricated component, but grout sleeve's rigidity is great, can cause the rigidity of connection structure department component to distribute inhomogeneous, and then influences the holistic anti-seismic performance of structure. Among the prior art, in order to improve the wholeness of connection structure department, assemble and adopt cast in situ concrete to connect in the core space of precast beam column node, the progress of construction is influenced to this scheme.

The embodiment of the invention provides an assembled beam-column connecting structure connected by grouting sleeves, and referring to fig. 1 to 4, the assembled beam-column connecting structure comprises a prefabricated beam 1, a prefabricated lower column 2 and a prefabricated upper column 3.

Precast beam 1, prefabricated lower column 2 and prefabricated upper column 3 all prefabricate the shaping in the mill, assemble at building structure's mounted position. The connection structure, called node for short, is formed by the connection positions of the precast beam 1, the precast lower column 2 and the precast upper column 3.

The performance of the fabricated concrete structure depends on the mechanical properties at the joint structure, and thus the integrity and shear resistance at the joint structure need to be strictly designed.

The precast beam 1, the precast lower column 2 and the precast upper column 3 can be suitable for building structures with different inclination angles, and the precast beam 1 is horizontally arranged, and the precast lower column 2 and the precast upper column 3 are vertically arranged.

Be provided with core structure district 11 on precast beam 1, the reinforcing bar quantity and the overall arrangement in the core structure district 11 are designed according to the intensity of structure. A through hole 12 is arranged in the core structure area 11, and a sleeve 13 is arranged in the through hole 12.

The core structure area 11 and the precast beam 1 are integrally precast and formed, so that the overall strength of the connecting structure is improved. The sleeve 13 is arranged in the core structure area 11, so that the shear strength of the core structure area can be improved, the condition that the rigidity of the sleeve is unevenly distributed can be avoided, and the seismic performance of the building structure is improved.

The core structure area 11 and the precast beam 1 are integrally precast and formed, so that all components of the prefabricated concrete structure are precast and manufactured in a factory, the cast-in-place concrete structure is avoided, and the construction progress is improved.

The prefabricated lower column 2 is arranged on a first side of the core structure area 11 and the prefabricated upper column 3 is arranged on a second side of the core structure area 11, the first side and the second side being located at opposite ends of the through hole 12.

The one end that is close to core structure district 11 on prefabricated lower prop 2 and the prefabricated upper prop 3 all is provided with anchor reinforcing bar 10, and anchor reinforcing bar 10 pegs graft in sleeve 13. The sleeve 13 plays a role in positioning and fixing the anchoring steel bar 10, grouting material 14 is injected into the sleeve 13, and the anchoring steel bar 10 is fixed in the sleeve 13 after the grouting material 14 is solidified.

According to an embodiment of the present invention, structural steel bars are disposed in the prefabricated lower column 2 and the prefabricated upper column 3, and the structural steel bars extend from the ends of the prefabricated lower column 2 and the prefabricated upper column 3 to form an anchoring steel bar 10.

In another embodiment, the anchoring bar 10 is made of a single bar, and the anchoring depth meets the requirements of the relevant standards.

It should be noted that the number of the anchoring reinforcing bars 10 is plural, and the plural anchoring reinforcing bars 10 can determine the positions of the prefabricated lower column 2 and the prefabricated upper column 3, and can also improve the structural strength of the connecting structure.

In one embodiment, the number of the anchoring bars 10 is 4, which are respectively disposed at four corners of the prefabricated lower column 2 and the prefabricated upper column 3.

The precast beam 1, the precast lower column 2 and the precast upper column 3 are connected through the grouting material 14 in a condensation manner, so that the process of concrete cast-in-place is reduced, the construction progress is improved, and the construction period is shortened.

As can be seen from the above, in the fabricated beam-column connection structure adopting sleeve grouting connection provided by the embodiment of the invention, the precast beam 1 includes the core structure area 11, the sleeve 13 is installed in the core structure area 11, and the precast lower column 2 and the precast upper column 3 are connected to the precast beam 1 through grouting at the sleeve 13, so that the construction progress is improved, and the construction period is shortened. The core structure area 11 and the precast beam 1 are integrally precast and formed, and the structural integrity is good. The sleeve 13 is arranged in the core structure area 11, so that the shear strength of the core structure area 11 can be improved, the condition that the rigidity of the sleeve 13 arranged in the prefabricated column is not uniformly distributed can be avoided, and the seismic performance of the building structure is improved.

According to one embodiment of the invention, the structural steel bars 15 are arranged in the precast beam 1, and the structural steel bars 15 are arranged in the core structure area 11 and perpendicular to the whole length of the sleeve 13, so that the defects of steel bar overlapping and steel bar position conflict are avoided, the structural strength of the core structure area 11 is improved, and meanwhile, the complexity of arranging the steel bars in the core structure area 11 is reduced.

The sleeve 13 is arranged in the core structural region 11, the structural length of the sleeve 13 influencing the shear strength of the core structural region 11.

According to one embodiment of the present invention, the structural bars 15 are disposed in the core structural region 11 near the first side and near the second side, and the structural bars 15 on the two sides are disposed in parallel and spaced apart. The length of the sleeve 13 is greater than the spacing between the structural bars 15 on both sides. The both ends of sleeve 13 are located the outside of construction bar 15 respectively, and the effort that receives on sleeve 13 can transmit construction bar 15, has improved the shear strength of core structure district 11 department.

The precast beam 1, the precast lower column 2 and the precast upper column 3 are connected through the grouting material 14 in a condensation mode, and the grouting material 14 needs to be injected into the sleeve 13 through a grouting pipeline and a grout outlet pipeline. When the core structure area 11 department sets up slip casting pipeline or grout outlet pipe way alone, improved the complexity that the pipeline was laid.

According to one embodiment of the invention, splicing seams are formed between the prefabricated lower column 2 and the core structure area 11 and between the prefabricated upper column 3 and the core structure area 11, the distance between the splicing seams is not less than 20mm, and the arrangement of the grouting holes 16 and the grout outlet 17 is facilitated. Meanwhile, the grouting material 14 is injected into the splicing seams, so that the strength of the connecting structure can be improved.

In one embodiment, the sleeve 13 is a fully grouted sleeve, the grouting holes 16 are provided at the joints between the prefabricated lower column 2 and the core structural area 11, and the grout outlet 17 is provided at the joints between the prefabricated upper column 3 and the core structural area 11. When grouting, the grouting material 14 is injected from the grouting hole 16, so that the generation of air bubbles can be reduced, and the compactness of the grouting material 14 can be improved.

In actual use, the splicing seams are sealed along the end edges of the prefabricated lower column 2 and the prefabricated upper column 3, and the grouting holes 16 and the grout outlet 17 are arranged at the splicing seams. Then, by means of group grouting, grouting material 14 is injected into grouting hole 16, and air is discharged from grout outlet 17 until grouting material 14 flows out of grout outlet 17.

In one embodiment, the grout outlet 17 is uniformly arranged at the splicing seam between the prefabricated upper column 3 and the core structure area 11, so that the splicing seam and air in the sleeve 13 can be uniformly discharged, the phenomenon of bubbles or honeycombs in the grouting material 14 is avoided, and the structural strength of the core structure area 11 is ensured.

The precast beam 1, the precast lower column 2 and the precast upper column 3 are connected through the grouting material 14 in a condensation mode, the strength of the connecting structure is determined by the compactness of the grouting material 14, and therefore the compactness of the grouting material 14 needs to be detected after grouting is finished.

According to an embodiment of the present invention, a grouting detection pipe 131 is connected to the sleeve 13, the grouting detection pipe 131 extends to the outside of the core structure region 11 when prefabrication is performed, and the grouting detection pipe 131 can detect the compactness of grouting material.

When in use, the grout outlet 17 is firstly sealed, and grouting material is injected into the grouting hole 16. When grouting material flows out from grouting detection tube 131, grouting detection tube 131 is blocked, grout outlet 17 is opened to enable each grout outlet 17 to overflow grouting material, and then grouting hole 16 and grout outlet 17 are blocked for maintenance.

After the grouting material is solidified, the anchoring reinforcing steel bar 10 is bonded with the inner side wall of the sleeve 13 through the grouting material. The length of the anchoring bar 10 within the sleeve 13, i.e. the anchoring length, affects the structural strength of the connection.

According to an embodiment of the present invention, the anchoring bar 10 is inserted into the sleeve 13 by a length at least 8 times the diameter of the anchoring bar 10, and the anchoring bar 10 can be stably fixed in the sleeve 13, ensuring a tight connection between the anchoring bar 10 and the sleeve 13.

The anchoring bar 10 is provided at the ends of the prefabricated lower column 2 and the prefabricated upper column 3, and the position of the anchoring bar 10 determines the positions of the prefabricated lower column 2 and the prefabricated upper column 3. After the anchoring bar 10 is inserted into the sleeve 13, the anchoring bar 10 needs to be adjusted to the position of the center of the sleeve 13, so that the position of the connection structure is accurate. When the anchoring reinforcing steel bar 10 is located at the right center of the sleeve 13, the grouting material around the anchoring reinforcing steel bar 10 can be uniformly distributed, and the anchoring force of the sleeve 13 to the anchoring reinforcing steel bar 10 is improved.

According to an embodiment of the present invention, a plurality of positioning members may be welded to the anchoring bar 10 and respectively supported on the inner side wall of the sleeve 13, and the positioning members may make the anchoring bar 10 be located at a central position in the sleeve 13.

In one embodiment, the end of the anchoring bar 10 is provided with a positioning ball 101, and the positioning ball 101 may center the anchoring bar.

In order to allow the grouting material to move smoothly in the sleeve 13, it is necessary to reduce the obstruction of the grouting material, and the spacer ensures a sufficient grouting passage.

In one embodiment, the detent ball 101 is provided with a groove 102, and the groove 102 is provided along the length of the anchoring bar 10. During grouting, grouting material flows into the higher end along the lower end of the sleeve 13 and flows at the position of the groove 102, and the flowing speed of the grouting material is increased.

The depth and width of the groove 102 affect the flow rate of the grouting material, and in one embodiment, the depth of the groove 102 is equal to or greater than the difference between the radius of the positioning ball 101 and the radius of the anchoring bar 10, that is, the depth of the groove 102 at least reaches the side wall of the anchoring bar 10.

In summary, the assembled beam-column connection structure connected by sleeve grouting provided by the embodiment of the invention comprises a prefabricated beam, a prefabricated lower column and a prefabricated upper column. Including the core structure district on the precast beam, install the sleeve in the core structure district, the post is connected in the precast beam through grout in sleeve department in the prefabricated lower prop and the prefabricated upper prop, has improved connection structure's construction progress, has shortened construction week time limit for a project. The core structure area and the precast beam are integrally precast and formed, and the structural integrity is better. The sleeve is arranged in the core structure area, so that the shear strength of the core structure area can be improved, the condition that the rigidity of the sleeve is unevenly distributed can be avoided, and the seismic performance of the building structure is improved.

Under the condition that the full length of the structural steel bars in the core structure area is arranged, the steel bars are prevented from being lapped, the structural strength of the core structure area is improved, and meanwhile, the complexity of arranging the steel bars in the core structure area is also reduced.

Under the condition that the length of the sleeve is larger than the distance between the structural steel bars on the two sides, acting force applied to the sleeve can be transmitted to the structural steel bars, and the shearing strength of the core structural region is improved.

And grouting materials are injected into the sleeve in a group grouting mode, so that the difficulty of pipeline arrangement in the core structure area is reduced.

Under the condition that grout outlet holes are uniformly formed in the splicing seams, air in the splicing seams and the sleeve can be uniformly discharged, and the phenomenon of bubbles or honeycombs in grouting materials is avoided.

Under the condition of sleeve connection in slip casting test tube, can detect the closely knit degree of grout material, ensure connection structure's intensity.

When the length of anchor reinforcing bar is 8 times of anchor reinforcing bar diameter at least in the sleeve, the sleeve is great with the anchor power of grout material to the anchor reinforcing bar, can prevent the anchor reinforcing bar slippage, has improved the stability of structure.

Under the condition that the positioning ball is arranged on the anchoring steel bar, the positioning ball can enable the anchoring steel bar to be located at the center of the sleeve, and the position accuracy of the structure is improved. The anchor reinforcing bar is located telescopic positive center, and the grout material in the sleeve can evenly wrap up the anchor reinforcing bar, has improved the intensity of structure.

Under the condition that the positioning ball is provided with the groove, the circulation speed of the grouting material can be increased, and the grouting material can uniformly wrap the anchoring reinforcing steel bars.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.