Connecting structure for extending new beam and cantilever beam

Abstract

The utility model provides a connecting structure of an extended new beam and a cantilever beam, the connecting structure comprises an outer sleeve fitting, the cantilever beam is sleeved with the outer sleeve fitting, one end of the outer sleeve fitting extends out in the preset extension direction of the cantilever beam to form the extended new beam, and the outer sleeve fitting is fixedly connected with a supporting column through a hoop part. According to the connecting structure of the new extension beam and the cantilever beam, the outer sleeve pipe fitting with high structural strength is used as the new extension beam, so that the newly-added new extension beam and the cantilever beam of the original structure are connected into a whole, the situation of construction cold joints is effectively avoided, the overall shear bearing capacity of the structure is effectively improved, and the service life of the structure is prolonged. And therefore, the overall structural strength and firmness are effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a connecting structure for extending a new beam and a cantilever beam. Background Technique

[0002] In the prior art, due to the change of building functions or the need for original structure reinforcement in some buildings, in the renovation project of existing buildings, it often occurs that the existing concrete cantilever beam needs to be lengthened. The current conventional process is mainly as follows: First, the concrete at the end of the existing concrete cantilever beam is chiseled off to fully expose the steel bars in the existing concrete cantilever beam. Then, the newly added steel bars are welded and lengthened with the original steel bars, and then the concrete is poured correspondingly. However, this process has the following problems: First, there is a construction cold joint at the joint between the new concrete and the old concrete, and there is a problem that the shear resistance is weak, which weakens the integrity and stability of the concrete structure. In addition, due to the lengthening of the cantilever beam, the bending moment on the upper part of the cantilever beam becomes larger, and the original steel bars are not enough to support the structure, so additional reinforcement treatment is required. Moreover, there is a problem that the construction of the upper part of the cantilever beam for reinforcement is difficult.

[0003] Aiming at the problems existing in the above-mentioned prior art, it is urgent to design a connecting structure for extending a new beam and a cantilever beam to solve the above problems. Content of the Utility Model

[0004] In order to overcome the technical problems existing in the prior art, the present application provides a connecting structure for extending a new beam and a cantilever beam and a preparation method thereof, so as to solve the problems proposed in the above background technique.

[0005] The present application provides a connecting structure for extending a new beam and a cantilever beam, including:

[0006] An outer sleeve pipe fitting, the outer sleeve pipe fitting is sleeved on the cantilever beam, and one end of the outer sleeve pipe fitting extends out along the preset extension direction of the cantilever beam to form an extended new beam, and the outer sleeve pipe fitting is fixedly connected with the support column through a hoop member.

[0007] In some embodiments, one end of the outer sleeve pipe fitting far from the extended new beam extends out to form a reinforcement connection section, and the reinforcement connection section is fixedly arranged at one end of the cantilever beam far from the extended new beam through a first anchor bolt member.

[0008] Through a plurality of first anchor bolt members passing through the fixing holes and being fixed on the cantilever beam, the reinforcement connection section can be fixed on the cantilever beam, thereby further strengthening the connection strength between the outer sleeve pipe fitting and the original structure, and effectively improving the bending resistance and support capacity of the extended new beam structure.

[0009] In some embodiments, the reinforcement connection section is arranged on the side of the cantilever beam far from the support column.

[0010] By setting the reinforced connection section and the cantilever beam to be fixedly connected to the side away from the support column, when the extended new beam is subjected to a downward pressure, the reinforced connection section can further provide a supporting effect for the extended new beam, thereby further strengthening the reliability of the extended new beam.

[0011] In some embodiments, the outer sleeve pipe fitting includes two side plates, which are respectively arranged on both side surfaces of the cantilever beam. A plurality of slits are formed on the side plates, and the slits are used to avoid the steel bars of the floor slab.

[0012] By forming a plurality of slits on the side plates, while realizing the fixed clamping of the side surface of the cantilever beam, the connection structure between the floor slab and the cantilever beam can be avoided from being damaged, effectively preventing the situation that the bearing capacity and crack resistance of the floor slab are significantly reduced, thus affecting the structural safety of the entire floor slab, effectively ensuring the support stability and structural safety of the original structure, and further providing guarantee for the structural stability of the overall building.

[0013] In some embodiments, the outer sleeve pipe fitting further includes a bottom plate, which is arranged on the side of the cantilever beam close to the support column. A fixing member is arranged at one end of the bottom plate close to the support column, and the fixing member is fixed on the support column through a second anchor bolt member.

[0014] By setting the fixing member to correspondingly abut against and connect the outer sleeve pipe fitting, the connection strength between the outer sleeve pipe fitting and the support column is further strengthened, thereby further strengthening the integrity of the overall structure.

[0015] In some embodiments, the gap between the outer sleeve pipe fitting and the cantilever beam is filled with glue for solidification treatment.

[0016] The utility model has at least the following beneficial effects:

[0017] 1. By setting the outer sleeve pipe fitting with high structural strength as the extended new beam, the newly added extended new beam and the original structural cantilever beam are connected into a whole, effectively avoiding the occurrence of construction cold joints, effectively improving the overall shear bearing capacity of the structure, and further effectively enhancing the overall structural strength and firmness;

[0018] 2. By setting the hoop member to be welded to the outer sleeve pipe fitting, and the hoop member is sleeved and fastened on the support column to realize the anchoring connection between the outer sleeve pipe fitting and the support column, the connection strength between the extended new beam and the original structure is further strengthened, effectively ensuring the overall structural strength;

[0019] 3. By filling the gap between the outer sleeve fitting and the cantilever beam with glue to solidify it, the gap between the cement structure and the steel structure is effectively bonded together to form a more compact whole. This effectively increases the connection strength between the two structures, prevents relative displacement or separation caused by the existence of the gap, and at the same time, the colloid can evenly transmit stress, reducing structural damage caused by stress concentration. This helps to improve the load-bearing capacity and stability of the entire structure, enhances the seismic performance of the overall structure, simplifies the construction process, and thus improves the construction efficiency. Description of the Drawings

[0020] Figure 1 It is a top view structural schematic diagram of the connection structure of the extended new beam and the cantilever beam of the present application;

[0021] Figure 2 It is a side view sectional structural schematic diagram of the connection structure of the extended new beam and the cantilever beam of the present application.

[0022] Description of the Reference Numerals:

[0023] 10: Cantilever beam;

[0024] 20: Support column;

[0025] 30: Outer sleeve fitting; 31: Extended new beam; 32: Reinforced connection section; 33: Gap;

[0026] 40: Hoop member;

[0027] 50: Second anchor bolt member;

[0028] 60: First anchor bolt member;

[0029] 70: Fixing member. Detailed Embodiments

[0030] The following specific embodiments illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Although the description of the present application will be introduced in combination with some embodiments, this does not mean that the features of this application are limited to this implementation manner. On the contrary, the purpose of introducing the application in combination with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of the present application, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0031] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0034] The embodiment of the present application provides a connection structure between an extended new beam and a cantilever beam. Please refer to Figures 1 to 2 , which includes an outer sleeve pipe fitting 30. The outer sleeve pipe fitting 30 is sleeved on the cantilever beam 10, and one end of the outer sleeve pipe fitting 30 extends out along the preset extension direction of the cantilever beam 10 to form an extended new beam 31. The outer sleeve pipe fitting 30 and the support column 20 are fixedly connected by a hoop member 40.

[0035] Specifically, the outer sleeve pipe fitting 30 is a steel pipe. The inside of the steel pipe is hollow to form a cavity. The cross-sectional shape and size of the cavity are adapted to the cantilever beam 10. When the cantilever beam 10 is a square beam, the corresponding steel pipe is also a square steel pipe, so that the steel pipe can be stably sleeved on the cantilever beam 10. In addition, the steel pipe is longer than the cantilever beam 10, so that the steel pipe extends out to form a new beam structure. The hoop member 40 is welded to the position on the outer sleeve pipe fitting 30 corresponding to or close to the contact with the support column 20. The outer sleeve pipe fitting 30 and the support column 20 are tightly connected by the hoop member 40 to further strengthen the connection strength between the outer sleeve pipe fitting 30 and the original structure, and a new beam with a certain length is extended on the original cantilever beam 10 while avoiding construction cold joints.

[0036] In some embodiments, please refer to Figures 1 to 2, one end of the outer sleeve pipe fitting 30 extending away from the extended new beam 31 forms a reinforcement connection section 32, and the reinforcement connection section 32 is fixedly arranged at one end of the cantilever beam 10 away from the extended new beam 31 through the first anchor bolt member 60.

[0037] Specifically, one end of the outer sleeve pipe fitting 30 extending away from the extended new beam 31 extends a certain distance to form the reinforcement connection section 32. The reinforcement connection section 32 is correspondingly close to the surface of the cantilever beam 10. A plurality of fixing holes are formed in the reinforcement connection section 32, and a plurality of first anchor bolt members 60 correspondingly pass through the fixing holes and are fixed on the cantilever beam 10, so that the reinforcement connection section 32 can be fixed on the cantilever beam 10, thereby further strengthening the connection strength between the outer sleeve pipe fitting 30 and the original structure, and effectively improving the bending resistance and support capacity of the extended new beam structure.

[0038] It should be noted that the reinforcement connection section 32 can cover one surface of the cantilever beam 10 or multiple surfaces of the cantilever beam 10. The specific coverage range is determined according to the actual situation and is not limited herein.

[0039] In some embodiments, please refer to Figure 1 and Figure 2 , the reinforcement connection section 32 is arranged on the side of the cantilever beam 10 away from the support column 20.

[0040] Specifically, the reinforcement connection section 32 is a steel plate adapted to the side surface of the cantilever beam 10 away from the support column 20. The reinforcement connection section 32 is fixedly connected to the side of the cantilever beam 10 away from the support column 20, so that when the extended new beam 31 is subjected to a downward pressure, the reinforcement connection section 32 can further provide a supporting effect for the extended new beam 31, thereby further strengthening the reliability of the extended new beam 31.

[0041] In some embodiments, please refer to Figure 1 and Figure 2 , the outer sleeve pipe fitting 30 includes two side plates. The two side plates are respectively arranged on the two side surfaces of the cantilever beam 10, and a plurality of slits 33 are formed in the side plates. The slits 33 are used to avoid the steel bars of the floor slab.

[0042] Specifically, by forming a plurality of slits 33 in the side plates, while realizing the fixed clamping of the side surface of the cantilever beam 10, the connection structure between the floor slab and the cantilever beam 10 can be avoided from being damaged, effectively avoiding the situation that the bearing capacity and crack resistance of the floor slab are significantly reduced, thereby affecting the structural safety of the entire floor slab, and effectively ensuring the support stability and structural safety of the original structure, and further providing guarantee for the structural stability of the overall building.

[0043] In some embodiments, please refer to Figure 1 and Figure 2, the outer sleeve pipe fitting 30 further includes a bottom plate, the bottom plate is arranged on the side of the cantilever beam 10 close to the support column 20, and a fixing member 70 is arranged at one end of the bottom plate close to the support column 20. The fixing member 70 is fixedly connected to the support column 20 by the second anchor bolt member 50 in a butt-joint manner.

[0044] Specifically, the fixing member 70 can be a fixing plate provided with a perforation. The side surface of the fixing plate is closely attached to and abuts against the corresponding side surface on the support column 20, and then the second anchor bolt member 50 is used to pass through the perforation and be correspondingly fixed on the support column 20, so as to achieve the purpose of correspondingly fixing the fixing plate on the support column 20. By arranging the fixing member 70 to correspondingly abut against and connect the outer sleeve pipe fitting 30, the connection strength between the outer sleeve pipe fitting 30 and the support column 20 is further strengthened, thereby further strengthening the integrity of the overall structure.

[0045] In some embodiments, please refer to Figure 1 and Figure 2 , the gap between the outer sleeve pipe fitting 30 and the cantilever beam 10 is filled with glue for solidification treatment.

[0046] Specifically, by filling the gap between the outer sleeve pipe fitting 30 and the cantilever beam 10 with glue for solidification treatment, the gap between the cement structure and the steel structure is effectively bonded together to form a more compact whole. The connection strength between the two structures is effectively increased, preventing relative displacement or separation caused by the existence of the gap. At the same time, the colloid can evenly transmit stress, reducing structural damage caused by stress concentration. It helps to improve the bearing capacity and stability of the whole structure, also enhances the seismic performance of the overall structure, simplifies the construction process, and thus improves the construction efficiency.

[0047] Obviously, those skilled in the art can make various changes and deformations to this application without departing from the spirit and scope of this application. Thus, if these modifications and deformations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these changes and deformations.

Claims

1. A connection structure between an extended new beam and a cantilever beam, comprising a cantilever beam and a support column, characterized in that: include: An outer sleeve member is sleeved on the cantilever beam, and one end of the outer sleeve member extends along a preset extension direction of the cantilever beam to form an extended new beam. The outer sleeve member is fixedly connected to the support column via a hoop member.

2. The connection structure of the extended new beam and the cantilever beam according to claim 1 is characterized in that: An end of the outer sleeve member away from the extended new beam extends out to form a reinforced connection section, and the reinforced connection section is fixedly arranged on the end of the cantilever beam away from the extended new beam through a first anchor member.

3. The connection structure of the extended new beam and the cantilever beam as claimed in claim 2 is characterized in that: The reinforced connecting section is arranged on a side of the cantilever beam away from the supporting column.

4. The connection structure of the extended new beam and the cantilever beam as claimed in claim 3 is characterized in that: The outer sleeve member includes two side plates, which are respectively arranged on the two side surfaces of the cantilever beam. A plurality of gaps are opened on the side plates, and the gaps are used to avoid the steel bars of the floor slab.

5. The connection structure of the extended new beam and the cantilever beam as claimed in claim 4 is characterized in that: The outer sleeve also includes a bottom plate, which is arranged on a side of the cantilever beam close to the support column. A fixing piece is arranged at one end of the bottom plate close to the support column, and the fixing piece is fixed to the support column through a second anchor bolt.

6. The connection structure of the extended new beam and the cantilever beam according to any one of claims 1 to 5, characterized in that: The gap between the outer sleeve and the cantilever beam is filled with glue.

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