A concrete composite slab connecting structure node

Abstract

The utility model discloses a kind of concrete composite slab connecting structure nodes, belong to modular integrated building technical field.Node includes module composite slab cast-in-place layer, module composite slab prefabricated layer, module prefabricated layer longitudinal reinforcement, cast-in-place layer longitudinal reinforcement, module stirrup, additional longitudinal reinforcement and additional stirrup;Two module composite slab horizontal parallel placement together, the lower half of module prefabricated layer longitudinal reinforcement and module stirrup is located inside module composite slab prefabricated layer, additional longitudinal reinforcement is arranged above module composite slab prefabricated layer and is located at the joint of two module composite slab, additional stirrup is tied and fixed in additional longitudinal reinforcement in two module composite slab, finally by module composite slab cast-in-place layer, two module composite slab are fixedly connected into one, and cast-in-place layer longitudinal reinforcement, additional longitudinal reinforcement and additional stirrup form hidden beam.The utility model is by the cast-in-place layer of setting additional longitudinal reinforcement and stirrup at composite slab joint, after pouring concrete, the effect that the joint of two modules of plate is connected to enhance is realized.

Description

Technical Field

[0001] This utility model relates to the field of modular integrated building technology, specifically to a connection structure node for concrete composite slabs. Background Technology

[0002] In recent years, modular integrated buildings, as prefabricated buildings with the highest assembly rate and the highest degree of industrialization, have become an important way to develop new building industrialization. Modular integrated buildings can effectively reduce on-site construction, increase construction speed, reduce carbon emissions, achieve green and low-carbon development, and have good economic, environmental and social benefits.

[0003] Concrete composite slabs are often used in modular integrated buildings. A concrete composite slab is a new type of floor structure that combines precast and cast-in-place concrete. It is composed of a precast concrete base slab and a cast-in-place concrete layer.

[0004] The existing methods of splicing composite slabs require the joints to be located in areas with lower stress, which makes the module division affected by the location of the joints, thus failing to fully meet the requirements of building functions. At the same time, the existing composite slabs require a supporting structure during splicing, which inevitably increases the construction period and construction costs. Utility Model Content

[0005] In view of this, the present invention provides a structural node for connecting concrete composite slabs. By setting a hidden beam at the module connection and setting additional longitudinal bars and stirrups in the cast-in-place layer at the joint of the composite slab, the connection at the joint of the two modules is strengthened after the concrete is poured.

[0006] A concrete composite slab connection structure includes a cast-in-place layer of modular composite slab, a precast layer of modular composite slab, longitudinal reinforcement of the precast layer, longitudinal reinforcement of the cast-in-place layer, module stirrups, additional longitudinal reinforcement, and additional stirrups.

[0007] Two modular composite slabs are placed horizontally side by side. The lower half of the precast layer longitudinal reinforcement and module stirrups are located inside the precast layer of the modular composite slab. Additional longitudinal reinforcement is set above the precast layer of the modular composite slab and at the junction of the two modular composite slabs. Additional stirrups bind and fix the additional longitudinal reinforcement in the two modular composite slabs. Finally, the two modular composite slabs are fixedly connected into one by the cast-in-place layer of the modular composite slab. The cast-in-place layer longitudinal reinforcement, additional longitudinal reinforcement and additional stirrups form a hidden beam.

[0008] Furthermore, the height of the additional longitudinal reinforcement is consistent with the height of the exposed portion of the module stirrups in the prefabricated layer of the module composite slab.

[0009] Furthermore, the additional stirrups are distributed at equal intervals along the length direction of the additional longitudinal bars.

[0010] Furthermore, the horizontal spacing between adjacent additional longitudinal reinforcement bars on the module composite plate is half the horizontal spacing between the longitudinal reinforcement bars of the precast layer or the cast-in-place layer.

[0011] Beneficial effects:

[0012] 1. The concrete composite slab connection structure node of this utility model realizes the effective connection of concrete module composite slabs through the hidden beam composed of cast-in-place longitudinal reinforcement, additional longitudinal reinforcement and additional stirrups. Joints can be set in places with large stress, and the stress is safe and reliable.

[0013] 2. In the construction process of this utility model, the prefabricated parts of two modular composite slabs are first installed, then additional longitudinal bars and stirrups are placed at the joint of the prefabricated parts of the two modular composite slabs, and finally concrete is poured on top of the prefabricated layer. The entire construction process can be carried out without support, which effectively improves construction efficiency and reduces construction costs.

[0014] 3. The precast concrete base slab of this utility model is tightly bonded to the cast-in-place concrete layer, and the resulting composite slab has excellent overall performance, with high load-bearing capacity and seismic performance. Attached Figure Description

[0015] Figure 1 A plan view of the structural joint connecting the concrete composite slab;

[0016] Figure 2 for Figure 1 AA sectional view.

[0017] Among them, 1-cast-in-place layer of module composite slab, 2-precast layer of module composite slab, 3-longitudinal reinforcement of precast layer, 4-module stirrups, 5-hidden beam, 51-longitudinal reinforcement of cast-in-place layer, 52-additional longitudinal reinforcement, and 53-additional stirrups. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] As attached Figure 1 and 2 As shown, this utility model provides a concrete composite slab connection structure node, including a cast-in-place layer 1 of modular composite slab, a precast layer 2 of modular composite slab, longitudinal reinforcement 3 of the precast layer, stirrups 4 of the module, longitudinal reinforcement 51 of the cast-in-place layer, additional longitudinal reinforcement 52 and additional stirrups 53.

[0020] Two modular composite slabs are placed horizontally side by side. The lower half of the precast layer longitudinal reinforcement 3 and the module stirrup 4 are located inside the precast layer 2 of the modular composite slab. The additional longitudinal reinforcement 52 is set above the precast layer 2 of the modular composite slab and at the junction of the two modular composite slabs. The additional stirrup 53 binds and fixes the additional longitudinal reinforcement 52 in the two modular composite slabs. Finally, the two modular composite slabs are fixedly connected into one by the cast-in-place layer 1 of the modular composite slab. The cast-in-place layer longitudinal reinforcement 51, the additional longitudinal reinforcement 52 and the additional stirrup 53 form the hidden beam 5 common to the two modular composite slabs.

[0021] When designing the connection structure node of the concrete composite slab of this utility model, it is necessary to design the concrete module based on the overall structural analysis results. The component size, reinforcement, additional longitudinal reinforcement, additional stirrups, and concrete strength all meet the structural design requirements.

[0022] During production: According to the on-site construction method, install the formwork, tie the reinforcing bars, pour the concrete, remove the formwork, cure, and transport it to the construction site.

[0023] The construction steps for the structural joints of the concrete composite slab connection are as follows:

[0024] Step 1: Install the prefabricated parts of the two modular composite slabs, and place the cast-in-place longitudinal reinforcement 51 in the module stirrups at the position corresponding to the longitudinal reinforcement of the prefabricated layer of the module;

[0025] Step 2: Place additional longitudinal reinforcement 52 and additional stirrups 53 at the joint of the prefabricated parts of the two modular composite slabs;

[0026] Step 3: Pour concrete on top of the precast layer to form the cast-in-place layer 1 of the modular composite slab.

[0027] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A structural joint for connecting composite concrete slabs, characterized in that, It includes the cast-in-place layer of the modular composite slab, the precast layer of the modular composite slab, the longitudinal reinforcement of the precast layer, the longitudinal reinforcement of the cast-in-place layer, the module stirrups, the additional longitudinal reinforcement, and the additional stirrups; Two modular composite slabs are placed horizontally side by side. The lower half of the precast layer longitudinal reinforcement and module stirrups are located inside the precast layer of the modular composite slab. Additional longitudinal reinforcement is set above the precast layer of the modular composite slab and at the junction of the two modular composite slabs. Additional stirrups bind and fix the additional longitudinal reinforcement in the two modular composite slabs. Finally, the two modular composite slabs are fixedly connected into one by the cast-in-place layer of the modular composite slab. The cast-in-place layer longitudinal reinforcement, additional longitudinal reinforcement and additional stirrups form a hidden beam.

2. The concrete composite slab connection joint as described in claim 1, characterized in that, The height of the additional longitudinal reinforcement is consistent with the height of the exposed portion of the module stirrups in the precast layer of the module composite slab.

3. The concrete composite slab connection structure node as described in claim 2, characterized in that, The additional stirrups are distributed at equal intervals along the length of the additional longitudinal bars.

4. The concrete composite slab connection structure node as described in claim 3, characterized in that, The horizontal spacing between adjacent additional longitudinal reinforcement bars on the module composite plate is half the horizontal spacing between the longitudinal reinforcement bars of the precast layer or the cast-in-place layer.

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