Fabricated primary and secondary beam joint

Abstract

The utility model discloses an assembly type primary and secondary beam joint, which relates to the field of building construction, and adopts the technical scheme that the assembly type primary and secondary beam joint comprises a prefabricated primary beam and a prefabricated secondary beam, a rectangular empty slot is formed in the middle of the prefabricated primary beam, the width of the rectangular empty slot is equal to that of the prefabricated secondary beam, and a supporting bracket is arranged on the prefabricated primary beam positioned on one side of the rectangular empty slot; the upper surface of the supporting bracket is flush with the lower end of the rectangular empty groove, and the prefabricated secondary beam is connected to the supporting bracket in a lap joint mode. Formworks are arranged on the two sides of the upper ends of the prefabricated main beams and the prefabricated secondary beams respectively, and concrete is poured into the formworks. The utility model has the beneficial effects that the problem that the anchoring length of the steel bars of the primary and secondary beams is insufficient or the vertical anchoring cannot be ensured due to the prefabrication form of the node part of the primary and secondary beams is solved, the reasonable anchoring of the steel bars is ensured, and the integrity and good anti-seismic property of the node part of the fabricated building beam are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of building construction, in particular to a kind of assembly type main beam and secondary beam node. BACKGROUND

[0002] Due to the progress of times and industry and other reasons, assembly type building develops gradually, wherein assembly type frame structure is simple to construct, and clear in stress, so it is adopted by most; In the construction process of assembly type frame structure, main beam and secondary beam node connection has been a part that encounters many problems in construction; Most problems are that when the upper longitudinal reinforcement of secondary beam is anchored to main beam, to leave reasonable anchoring space, it leads to that reinforcement is not vertically anchored downward in construction process, or problems such as violent destruction of prefabricated structure forced construction, rough construction, and stress hidden danger of structure. SUMMARY

[0003] In view of the above technical problems, the utility model provides a kind of assembly type main beam and secondary beam node.

[0004] Its technical scheme is, including prefabricated main beam and prefabricated secondary beam, the middle part of the prefabricated main beam is provided with rectangular hollow slot, the width of the rectangular hollow slot is equal to the width of the prefabricated secondary beam, the support bracket is set on the prefabricated main beam at one side of the rectangular hollow slot, the upper surface of the support bracket is flush with the lower end of the rectangular hollow slot, and the prefabricated secondary beam is lapped on the support bracket.

[0005] The upper end of the prefabricated main beam and the prefabricated secondary beam is provided with formwork on both sides respectively, and the formwork is poured with concrete.

[0006] Preferably, a plurality of stirrups are embedded on the prefabricated main beam and the prefabricated secondary beam, the upper end of the stirrup extends to the outside of the upper surface of the prefabricated main beam and the prefabricated secondary beam, and the longitudinal main reinforcement of the prefabricated main beam and the prefabricated secondary beam passes through the stirrup and is fixedly connected with the stirrup.

[0007] Preferably, a plurality of secondary beam longitudinal reinforcements are arranged on the stirrup of the prefabricated secondary beam, the secondary beam longitudinal reinforcement is located above the prefabricated main beam, and one end of the secondary beam longitudinal reinforcement extends above the rectangular hollow slot.

[0008] Preferably, the secondary beam longitudinal reinforcement is bent downward at one end of the rectangular hollow slot, and is fixedly connected with the longitudinal main reinforcement of the prefabricated main beam.

[0009] Preferably, an opening is arranged at one end of the prefabricated secondary beam close to the rectangular hollow slot, and the prefabricated secondary beam is lapped on the support bracket through the opening.

[0010] The beneficial effect brought by the technical scheme provided by the embodiment of the utility model is that the problem of insufficient anchorage length of the main beam and the secondary beam or the problem of unable to guarantee vertical anchorage caused by the prefabrication form of the main beam and the secondary beam joint part is solved, the anchorage of the reinforcement is guaranteed to be reasonable, the integrity of the joint part of the fabricated building beam and the good seismic performance are guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The overall structure of the embodiment of the utility model is shown Figure One .

[0012] Figure 2 The overall structure of the embodiment of the utility model is shown Figure Two .

[0013] Figure 3 The A part of the embodiment of the utility model is shown Figure 2 .

[0014] Among them, the sign is: 1, prefabricated main beam; 2, prefabricated secondary beam; 3, rectangular air slot; 4, support bracket; 5, stirrup; 6, longitudinal main reinforcement; 7, secondary beam longitudinal reinforcement. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and embodiments. Of course, the specific embodiments described here are only used to explain the utility model, and not used to limit the utility model.

[0016] It should be noted that the embodiments in the utility model creation and the features in the embodiments can be combined with each other without conflict.

[0017] In the description of the utility model creation, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model creation and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as limiting the utility model creation. In addition, the terms "first", "second" and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model creation, unless otherwise specified, the meaning of "multiple" is two or more.

[0018] In the description of the utility model, it needs to be explained that, unless otherwise explicitly provided and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0019] Embodiment 1

[0020] Referring to Figures 1 to 3 The utility model provides a kind of assembly type main beam and secondary beam joint, including prefabricated main beam 1 and prefabricated secondary beam 2, the middle part of prefabricated main beam 1 is provided with rectangular air slot, the width of rectangular air slot 3 is equal to the width of prefabricated secondary beam 2, support bracket 4 is arranged on prefabricated main beam 1 at one side of rectangular air slot 3, the upper surface of support bracket 4 is flush with the lower end part of rectangular air slot 3, prefabricated secondary beam 2 is overlapped on support bracket 4;

[0021] Support bracket 4 is mainly installed by embedded part and bolt installation mode, if using the mode of embedded part installation, prefabricated main beam 1 is made in the prefabricated main beam 1 manufacturing stage, and the position of support bracket 4 is designed to embed embedded part in advance, embedded part is usually composed of steel plate and anchoring steel bar, the surface of steel plate is smooth and the size is adapted to support bracket 4, anchoring steel bar is deep into prefabricated main beam 1 inside, and the stability of embedded part is guaranteed by the adhesive force of main beam concrete, when prefabricated main beam 1 is transported to construction site, support bracket 4 is connected with embedded part by welding mode.

[0022] If using bolt connection mode, bolt hole is reserved according to design interval at one side of rectangular air slot 3 when prefabricated main beam 1 is made, and the corresponding bolt hole is opened at the part where support bracket 4 is connected with main beam, when installation, support bracket 4 is placed in predetermined position, so that the bolt hole of the two is aligned, then high-strength bolt is penetrated, and is tightened;

[0023] The upper end part of prefabricated main beam 1 and prefabricated secondary beam 2 is provided with formwork on both sides respectively, and the concrete is poured in formwork.

[0024] Post-cast concrete is poured on the upper surface of prefabricated main beam 1 and prefabricated secondary beam 2, and in rectangular air slot 3, the pouring thickness is greater than the height that stirrup 5 extends to prefabricated main beam 1 and prefabricated secondary beam 2, the prefabricated main beam 1 and prefabricated secondary beam 2 form a whole by the post-poured concrete, and the integrity of main-secondary beam connection joint is improved.

[0025] The precast main beam 1 and the precast secondary beam 2 are embedded with a plurality of stirrups 5, the upper end of the stirrup 5 extends to the outside of the upper surface of the precast main beam 1 and the precast secondary beam 2, and the longitudinal reinforcement 6 of the precast main beam 1 and the precast secondary beam 2 passes through the stirrup 5 and is fixedly connected with the stirrup 5.

[0026] In order to improve the structural strength, the number of stirrups can be appropriately increased near the rectangular air slot 3 of the precast main beam 1 and near the end of the precast secondary beam 2 close to the precast main beam 1, so as to improve the carrying capacity of the structure.

[0027] The precast secondary beam 2 is provided with a plurality of secondary beam longitudinal reinforcement 7 on the stirrup 5, the secondary beam longitudinal reinforcement 7 is located above the precast main beam 1, and one end of the secondary beam longitudinal reinforcement 7 extends above the rectangular air slot 3;

[0028] When the precast secondary beam 2 is placed on the precast main beam 1, the secondary beam longitudinal reinforcement 7 is arranged alternately with the stirrup 5 on the precast main beam 1.

[0029] The secondary beam longitudinal reinforcement 7 is bent downward at one end of the rectangular air slot 3 and is fixedly connected with the longitudinal reinforcement 6 of the precast main beam 1.

[0030] The secondary beam longitudinal reinforcement 7 and the longitudinal reinforcement 6 are fixedly connected by welding or steel bar binding;

[0031] The secondary beam longitudinal reinforcement 7 arranged on the stirrup 5 of the precast secondary beam 2 extends to above the rectangular air slot 3 and is bent downward to be fixed with the longitudinal reinforcement 6 of the precast main beam 1, which increases the anchoring length and connection strength of the steel bars at the joint, and can better transfer the load borne by the secondary beam to the main beam, further improves the carrying capacity of the joint, and makes it can adapt to the building demand of larger span and heavier load.

[0032] The plurality of stirrups 5 and the longitudinal reinforcement 6 are connected with each other to form a continuous steel bar network in the joint area, and after the concrete is poured, the steel bars are tightly combined with the concrete to tightly connect the precast main beam 1 and the precast secondary beam 2 together, which significantly improves the integrity of the joint, and when subjected to external force, the joint can deform as a whole, rather than each component bearing force alone, thereby enhancing the stability of the structure.

[0033] An opening is arranged at one end of the precast secondary beam 2 close to the rectangular air slot 3, and the precast secondary beam 2 is lapped on the support bracket 4 through the opening.

[0034] The cooperation of the opening and the bracket provides a clear positioning mark for the installation of the precast secondary beam 2, and the construction personnel can quickly align the opening with the bracket when hoisting the precast secondary beam 2 on site, which greatly reduces the time and difficulty of adjusting the position and improves the installation efficiency.

[0035] The utility model uses, first, hoist and transport the prefabricated main beam 1 to the specified position, then, the prefabricated secondary beam 2 has the one end of the gap and places on the support bracket 4, after, connect the secondary beam longitudinal reinforcement 7 that the prefabricated main beam 1 and the prefabricated secondary beam 2 project, complete the reinforcement connection, install the formwork on the both sides of the upper end of the prefabricated main beam 1 and the prefabricated secondary beam 2 after, finally, pour the concrete to the formwork, shake and compact, wait for the concrete to reach the design strength, remove the formwork, by this node installation is finished, can effectively bear the building structure load.

[0036] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A fabricated primary and secondary beam joint, characterized by, The utility model relates to a prefabricated beam structure, which comprises a prefabricated main beam (1) and a prefabricated secondary beam (2), wherein a rectangular air slot (3) is arranged in the middle of the prefabricated main beam (1), the width of the rectangular air slot (3) is equal to the width of the prefabricated secondary beam (2), a support bracket (4) is arranged on the prefabricated main beam (1) at one side of the rectangular air slot (3), the upper surface of the support bracket (4) is flush with the lower end of the rectangular air slot (3), and the prefabricated secondary beam (2) is lapped on the support bracket (4). The upper end of the prefabricated main beam (1) and the prefabricated secondary beam (2) is respectively provided with a formwork, and concrete is poured in the formwork.

2. The fabricated primary and secondary beam joint according to claim 1, characterized in that, A plurality of stirrups (5) are embedded in the prefabricated main beam (1) and the prefabricated secondary beam (2), the upper end of the stirrup (5) extends to the outside of the upper surface of the prefabricated main beam (1) and the prefabricated secondary beam (2), and the longitudinal main reinforcement (6) of the prefabricated main beam (1) and the prefabricated secondary beam (2) penetrates through the stirrup (5) and is fixedly connected with the stirrup (5).

3. The fabricated primary and secondary beam joint according to claim 2, characterized in that, A plurality of secondary beam longitudinal reinforcements (7) are arranged on the stirrup (5) of the prefabricated secondary beam (2), the secondary beam longitudinal reinforcement (7) is located above the prefabricated main beam (1), and one end of the secondary beam longitudinal reinforcement (7) extends to above the rectangular air slot (3).

4. The fabricated primary and secondary beam joint of claim 3, wherein, The secondary beam longitudinal reinforcement (7) is bent downward at one end of the rectangular air slot (3) and is fixedly connected with the longitudinal main reinforcement (6) of the prefabricated main beam (1).

5. The fabricated girder panel according to claim 1, wherein, An opening is arranged at one end of the prefabricated secondary beam (2) close to the rectangular air slot (3), and the prefabricated secondary beam (2) is lapped on the support bracket (4) through the opening.

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