CN204728493U - A kind of concrete beam and girder steel sidepiece have just connect dry type syndeton - Google Patents

Abstract

The utility model discloses a rigidly connected dry connection structure between a concrete beam and a steel beam side, which comprises an I-shaped steel beam as a main beam and an I-shaped steel beam connected to the side of the I-shaped steel beam through a steel hoop as a The prefabricated concrete beam of the secondary beam; one end of the steel hoop is connected and fixed with the end of the prefabricated concrete beam through a shear bolt, and the other end is welded to the web and the web in the I-beam The flange plates are connected so that the prefabricated concrete beam is rigidly connected to the side of the I-beam. Compared with the traditional rigidly connected joints of concrete beams, the utility model reduces the wet work on the construction site. Because the steel structure beams are used, the plasticity and toughness of the joints are improved, and the self-weight is reduced. The ordinary tower crane can meet the needs of hoisting and lifting weight. , making the installation more concise and convenient. It can be used in low, medium, high-rise and other similar prefabricated buildings.

Description

A rigid dry connection structure between concrete beam and steel beam side

technical field

The utility model relates to the construction field, in particular to a rigid-joint dry connection structure between a concrete beam and a steel beam side.

Background technique

At present, in the traditional structural design and construction practice, the rigid joint joint between the side of a beam and another beam is commonly used in the form of cast-in-place reinforced concrete structure. This traditional cast-in-place concrete beam rigid joint Nodes, the way to achieve rigid connection is only the size of the anchorage length of the steel bars, and it also needs to cast concrete at the construction site. Because the traditional connection nodes require on-site wet work, it is easy to waste materials and cause certain pollution to the environment, which does not meet the energy-saving emission reduction and green building requirements advocated by the state. Moreover, there are also problems of low plasticity and toughness at the connection point of the above-mentioned traditional connection form.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a rigidly connected dry connection structure between a concrete beam and a steel beam side.

The technical scheme of the utility model is as follows:

A concrete beam and steel beam side rigidly connected dry connection structure, which includes an I-shaped steel beam as a main beam and a prefabricated concrete beam as a secondary beam connected to the side of the I-shaped steel beam through a steel hoop Beam; one end of the steel hoop is connected and fixed with the end of the prefabricated concrete beam through a shear bolt, and the other end is connected with the web and flange plate in the I-beam by welding , so that the prefabricated concrete beam is rigidly connected to the side of the I-shaped steel beam.

According to a preferred embodiment, the I-beam includes the web and the flange plate; wherein, the flange plate includes an upper flange plate and a lower flange plate, and the upper flange plate Stiffening ribs perpendicular to the upper flange plate, the lower flange plate and the web are arranged between the lower flange plate and the lower flange plate; the steel hoop is connected to the upper flange plate and the The lower flange plate is directly connected, and the steel hoop is connected to the web through the stiffener.

According to a preferred embodiment, the prefabricated concrete beam includes an insertion part inserted into the steel hoop; The hoops are connected so that the steel hoops are fixed to the ends of the prefabricated concrete beams.

According to a preferred embodiment, a longitudinal beam reinforcement is arranged in the prefabricated concrete beam; a top sealing plate is arranged at the top end of the insertion part in the steel hoop; the top sealing plate corresponds to the A hole is opened at the position of the longitudinal beam reinforcement, and the end of the longitudinal beam reinforcement is inserted into the hole and fixed by welding, so that the longitudinal beam reinforcement is connected with the top sealing plate to ensure that the prefabricated concrete beam and the The connection strength of the steel ferrule.

According to a preferred embodiment, the top sealing plate is fixed in the steel ferrule by welding.

According to a preferred embodiment, stirrups are arranged in the prefabricated concrete beams; vent holes are arranged in the steel hoops.

According to a preferred embodiment, the steel hoop includes a steel hoop plate; a plurality of the steel hoop plates surround the insertion portion of the prefabricated concrete beam, and the steel hoop plate and the steel sleeve The hoop plates are connected by welding to form the steel hoop.

According to a preferred embodiment, anti-tension steel bars are arranged between the hoop plates of the steel jacket arranged on the height plane of the precast concrete beam.

According to a preferred embodiment, the pair of tension bars is connected with the steel hoop plate by welding.

According to a preferred embodiment, the steel ferrule is connected with the upper flange plate and the lower flange plate by single-side groove welding, the groove angle is 30-60 degrees, and at the There is a notch on the steel hoop for placing the arc striking plate for welding; the steel hoop and the stiffener are connected by unilateral groove welding, and the groove angle is 30-60 degrees.

Compared with the prior art, the utility model has the beneficial effects of:

In the utility model, the end of the concrete beam as the secondary beam is covered with a steel hoop, and then one end of the steel hoop is firmly welded to the flange and web of the I-beam as the main beam, thereby forming a rigid joint. Compared with the traditional concrete beam rigid connection joints, it reduces the wet work on the construction site, meets the requirements of energy saving and emission reduction and green buildings; at the same time, due to the use of steel structure beams, the plasticity and toughness of the joints are improved, and the self-weight is reduced. The installation is more concise and convenient.

Description of drawings

Fig. 1, Fig. 2 are the structural representations of the utility model;

Fig. 3 is the structural representation of the steel hoop provided with the shear studs in the utility model;

Fig. 4 is a schematic diagram of the connection structure between the steel hoop and the prefabricated concrete beam in the utility model.

In the above drawings, the names of components corresponding to the reference signs are as follows:

1-I-shaped steel beam, 2-prefabricated concrete beam, 3-steel hoop, 4-shear stud, 5-longitudinal beam reinforcement, 6-top sealing plate, 7-stirrup, 8-vent, 9 - Stiffener, 10 - tension reinforcement; 110 - web, 120 - flange plate, 121 - upper flange plate, 122 - lower flange plate, 210 - insertion part, 610 - hole.

Detailed ways

The utility model will be further described below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model includes but not limited to following embodiment.

As shown in Fig. 1 and Fig. 2, it shows a kind of concrete beam and steel beam side rigid connection dry type connection structure, which includes an I-shaped steel beam 1 as the main beam and a steel hoop 3 connected to the work A prefabricated concrete beam 2 serving as a secondary beam at the side of the cross-shaped steel beam 1 . One end of the steel hoop 3 is connected and fixed to the end of the prefabricated concrete beam 2 through the shear stud 4, and the other end is connected to the web 110 and the flange plate 120 in the I-beam 1 by welding, so that The prefabricated concrete beam 2 is rigidly connected to the side of the I-beam 1 .

The I-beam 1 includes a web 110 and a flange 120 . The flange plate 120 includes an upper flange plate 121 and a lower flange plate 122 . A stiffener 9 perpendicular to the upper flange plate 121 , the lower flange plate 122 and the web 110 is arranged between the upper flange plate 121 and the lower flange plate 122 . The steel hoop 3 is directly connected with the upper flange plate 121 and the lower flange plate 122 , and the steel hoop 3 is connected with the web 110 through the stiffener 9 . Preferably, the steel ferrule 3 is connected with the upper flange plate 121 and the lower flange plate 122 by single-side groove welding, and the groove angle is 30-60 degrees, preferably 50 degrees. A notch is provided on the steel ferrule 3 for placing the arc striking plate for welding. The steel hoop 3 and the stiffener 9 are connected by unilateral groove welding, and the groove angle is 30-60 degrees, preferably 50 degrees.

As shown in FIGS. 3 and 4 , the prefabricated concrete beam 2 includes an insertion portion 210 inserted into the steel ferrule 3 . The insertion part 210 is connected to the steel collar 3 through a plurality of shear bolts 4 arranged in the steel collar 3 , so that the steel collar 3 is fixed to the end of the prefabricated concrete beam 2 . Specifically, the steel hoop 3 includes a steel hoop plate. A plurality of steel hoop plates surround the insertion portion 210 of the prefabricated concrete beam 2 , and the steel hoop plates are connected by welding to form the steel hoop 3 .

The function of the steel hoop is that one end thereof is connected and fixed to the end of the prefabricated concrete beam 2 through the shear stud 4, and the other end is connected to the web 110 and the flange plate 120 in the I-beam 1 by welding. Connection, so that the I-shaped steel beam as the main beam and the concrete beam as the secondary beam form a rigid connection point; at the same time, the strength of the concrete beam at the node is increased. The effect on the steel bars is to further stabilize the steel hoop, prevent the concrete from cracking at the joint, and enhance the strength of the concrete beam at the joint.

Further, tension reinforcement bars 10 are arranged between the hoop plates on the height plane of the prefabricated concrete beam 2 . Preferably, the tension steel bar 10 is connected with the steel hoop plate by welding.

Further, longitudinal beam bars 5 are arranged in the prefabricated concrete beam 2 . A top sealing plate 6 is provided at the top end of the insertion part 210 in the steel ferrule 3 . A hole 610 is opened on the top sealing plate 6 at a position corresponding to the longitudinal beam rib 5 . The end of the longitudinal beam reinforcement 5 is inserted into the hole 610 and fixed by welding, so that the longitudinal beam reinforcement 5 is connected with the top sealing plate 6 to ensure the connection strength between the prefabricated concrete beam 2 and the steel hoop 3 . Preferably, the top sealing plate 6 is fixed in the steel ferrule 3 by welding.

Further, stirrups 7 are arranged in the prefabricated concrete beam 2 . The steel ferrule 3 is provided with an air vent 8, and its function is to get rid of the residual air inside when pouring concrete, so as to ensure that the concrete is poured and compacted.

The installation steps of the present utility model are as follows:

First, hoisting positioning. The specific steps are as follows:

(1), first review the drawings to see whether the production number and production model of the components correspond to the corresponding diagrams;

(2) Check whether the components are damaged, especially the edge of the stairs;

(3) Observe the direction of the stairs, and adjust the direction of the stairs according to the observation results;

(4) Pay attention to the position of the anchoring steel bars during the positioning process, and adjust the distance appropriately so that the steel bars do not fight;

(5) Lift it to the corresponding position, and use the telescopic screw for approximate positioning.

Second, fix the calibration. The specific steps are as follows:

(1) Use theodolite, spirit level and other surveying and mapping tools to observe various indicators such as verticality and levelness, and fine-tune them;

(2), record the observation results, and ensure that the error is within 2';

(3) Adjust the position of the reserved hole at the upper end of the stairs to minimize the error.

Compared with the traditional rigidly connected joints of concrete beams, the utility model reduces the wet work on the construction site. Because the steel structure beams are used, the plasticity and toughness of the joints are improved, and the self-weight is reduced. The ordinary tower crane can meet the needs of hoisting and lifting weight. , making the installation more concise and convenient. It can be used in low, medium, high-rise and other similar prefabricated buildings.

According to above-mentioned embodiment, just can realize the utility model well. It is worth noting that, based on the premise of the above-mentioned structural design, in order to solve the same technical problem, even if some insubstantial changes or embellishments are made on the utility model, the essence of the technical solution adopted is still the same as that of the utility model. same, so it should also be within the protection scope of the present utility model.

Claims (10)

1. a concrete beam and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, it comprise as girder steel I-beam (1) and by a steel hoop (3) be connected to described steel I-beam (1) sidepiece, as the Prefabricated Concrete beam (2) of secondary beam;

One end of described steel hoop (3) is connected and fixed by the end of shear stud (4) with described Prefabricated Concrete beam (2), its other end is connected with the web (110) in described steel I-beam (1) and frange plate (120) in a welding manner, makes described Prefabricated Concrete beam (2) just be connected to described steel I-beam (1) sidepiece in succession.

2. a kind of concrete beam as claimed in claim 1 and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, described steel I-beam (1) comprises described web (110) and described frange plate (120);

Wherein, described frange plate (120) comprises top flange plate (121) and bottom wing listrium (122), is provided with the stiffening rib (9) perpendicular to described top flange plate (121), described bottom wing listrium (122) and described web (110) between described top flange plate (121) and described bottom wing listrium (122);

Described steel hoop (3) is directly connected with described bottom wing listrium (122) with described top flange plate (121), and described steel hoop (3) is connected with described web (110) by described stiffening rib (9).

3. a kind of concrete beam as claimed in claim 2 and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, described Prefabricated Concrete beam (2) comprises the insertion section (210) of inserting in described steel hoop (3);

Described insertion section (210) is connected with described steel hoop (3) by the multiple described shear stud (4) be arranged in described steel hoop (3), makes described steel hoop (3) be fixed on the end of described Prefabricated Concrete beam (2).

4. a kind of concrete beam as claimed in claim 3 and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, in described Prefabricated Concrete beam (2), be provided with longeron muscle (5);

The top end being positioned at described insertion section (210) in described steel hoop (3) is provided with top closing plate (6); Hole (610) is offered in the upper position corresponding to described longeron muscle (5) of top closing plate (6), the end of described longeron muscle (5) to be inserted in described hole (610) and is fixed with welding manner, makes longeron muscle (5) be connected to ensure the bonding strength of described Prefabricated Concrete beam (2) and described steel hoop (3) with described top closing plate (6).

5. a kind of concrete beam as claimed in claim 4 and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, described top closing plate (6) is fixed in described steel hoop (3) with welding manner.

6. a kind of concrete beam as claimed in claim 4 and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, in described Prefabricated Concrete beam (2), be provided with stirrup (7); Described steel hoop (3) is provided with steam vent (8).

7. a kind of concrete beam as claimed in claim 3 and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, described steel hoop (3) comprises steel hoop plate;

Multiple described steel hoop plate around the insertion section (210) of described Prefabricated Concrete beam (2), and is connected with welding manner between described steel hoop plate with described steel hoop plate, thus forms described steel hoop (3).

8. a kind of concrete beam as claimed in claim 7 and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, are arranged between the described steel hoop plate on described Prefabricated Concrete beam (2) height face and are provided with drawing reinforcing bar (10).

9. a kind of concrete beam as claimed in claim 8 and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, are describedly connected with welding manner to drawing between reinforcing bar (10) with described steel hoop plate.

10. a kind of concrete beam as described in one of claim 2 to 9 and girder steel sidepiece have just connect dry type syndeton, it is characterized in that, described steel hoop (3) is connected with welding with bevel between described top flange plate (121) and described bottom wing listrium (122), its bevel angle is 30 ~ 60 degree, and on described steel hoop (3), be provided with breach, weld to lay run-on tab;

Weld with bevel between described steel hoop (3) with described stiffening rib (9) and be connected, its bevel angle is 30 ~ 60 degree.