Module building foundation - Rigid connection node for grouting of inserted bars in module units

Abstract

The present invention discloses a rigid connection node for inserting steel bars and grouting between a modular building foundation and a modular unit. Pouring holes are reserved on the foundation. The modular unit is provided with lower corner pieces. The lower corner pieces adopt a box structure and are respectively vertically connected to the modular columns and the floor beams. A pouring operation hole offset outside the modular column is provided at the top, and an outlet directly below the modular column is provided at the bottom. A node connection steel pipe is provided above the outlet. A horizontal connecting plate is clamped between the modular unit and the foundation. An intermediate connecting steel pipe is vertically connected thereto. The upper end of the pipe protrudes from the horizontal connecting plate and is inserted into the outlet in a fitting manner. Most of the pipe is inserted into the pouring hole. Construction steel bars are inserted into the pouring hole. The construction steel bars pass through the intermediate connecting steel pipe and the upper ends are inserted into the node connection steel pipe. The box structure of the lower corner piece, the node connection steel pipe and the pouring hole are filled with an integrally formed concrete entity. The present invention does not require additional operating space and is applicable to the connection areas between the corner, edge and middle parts of the modular structure and the foundation.

Description

Technical Field

[0001] The present invention relates to the field of integrated container house structures, and particularly to a connection node between an integrated container house and a foundation, which is applicable to the connection areas between the corner, edge, and middle parts of a modular building and the foundation. Background Art

[0002] Modular building divides traditional houses into building module units with a single room or a certain three-dimensional building space, and then transports each unit to the construction site for assembly and connection. It is a new type of building form. Since it is prefabricated in the factory and directly installed on site, it has a very high degree of industrialization and is a high-end product of prefabricated buildings. Due to its industrial manufacturing characteristics, it has prominent advantages such as high efficiency, simplicity, refinement, and greenness, and has advantages that cannot be compared with traditional buildings. Therefore, integrated container houses also have very good development prospects.

[0003] Currently, the research focus of integrated container houses is concentrated on the connection of modules. An important branch is the connection between modules and the foundation. However, there are relatively few existing forms of connection between module units and the foundation. Some use embedded anchor bolts and anchor plates and then connect them to the modules, or weld precast piles to the modules, or use columns to connect to the foundation. Among them, the use of anchor bolts requires construction space, and there is a lack of operating space in the middle connection area; the use of pile foundations causes certain difficulties in transportation, and directly using column connections also requires operating space and does not meet the requirements of module prefabrication. Summary of the Invention

[0004] The present invention provides a rigid connection node for inserting steel bars and grouting between a modular building foundation and a module unit to solve the technical problems existing in the known technology. This node does not require additional operating space and is applicable to the connection areas between the corner, edge, and middle parts of the module structure and the foundation.

[0005] The technical solution adopted by the present invention to solve the technical problems existing in the known technology is as follows: A rigid connection node for inserting steel bars and grouting in a modular building foundation - modular unit, comprising a modular unit and a foundation. The node further comprises an intermediate connecting member and construction steel bars; perfusion holes are reserved on the foundation; the modular unit is provided with a modular column, a floor beam and a lower corner member. The lower corner member adopts a box structure and is vertically connected to the modular column and the floor beam respectively. A perfusion operation hole offset outside the modular column is provided at the top, and a concrete outlet directly below the modular column is provided at the bottom. A node connecting steel pipe is provided above the concrete outlet. The node connecting steel pipe is arranged inside the box structure and is fixedly connected to the top of the box structure at the upper end; the intermediate connecting member is provided with a horizontal connecting plate clamped between the modular unit and the foundation. An intermediate connecting steel pipe is vertically connected to the horizontal connecting plate. The upper end of the intermediate connecting steel pipe protrudes from the horizontal connecting plate to form a positioning joint matching the concrete outlet. Most of the intermediate connecting steel pipes are inserted into the perfusion holes. The perfusion holes are inserted with the construction steel bars. The construction steel bars pass through the intermediate connecting steel pipes and are inserted into the node connecting steel pipe at the upper end; the box structure of the lower corner member, the node connecting steel pipe and the perfusion holes are filled with an integrally formed concrete entity.

[0006] The advantages and positive effects of the present invention are as follows:

[0007] 1) The unit adopts a box-shaped corner member and is connected to the foundation through a horizontal connecting plate with a positioning pipe. The modular unit is equipped with an operation hole by itself, without the need for additional operation space, and the operation is simple and convenient; it can be applied to the connection areas of the corners, edges and middle parts of the modular structure with the foundation, and has strong applicability.

[0008] 2) The steel-concrete structure is adopted. The fastening effect of the concrete can be used to better connect the structural steel bars with the lower corner member, improving the tensile strength. At the same time, the perfusion point is located at the beam end node, which is beneficial to strengthening the node stiffness. It can meet the force transmission requirements of the rigid foundation node and can meet the mechanical property requirements of the rigid foundation node for tensile, shear and bending resistance. The connection is safe and reliable, and the structure is stable; and the construction operation is simple, there is no welding on site, the efficiency is high, and the speed is fast.

[0009] 3) The unit adopts a box-shaped corner member and is connected to the foundation through a horizontal connecting plate with a positioning pipe, making the first-floor modular structure simple, the appearance regular, and easy to transport. Description of the Drawings

[0010] Figure 1 It is a schematic diagram of the composition of the rigid connection node of the present invention;

[0011] Figure 2 It is a schematic diagram of the structure of the lower corner member of the present invention;

[0012] Figure 3Schematic cross-sectional view of the lower corner piece of the present invention;

[0013] Figure 4 Schematic structural view of the intermediate connecting piece of the present invention;

[0014] Figure 5 Schematic view of the installation process of the unit of the present invention connected to the foundation.

[0015] In the figure, 1 is the module column; 2 is the floor beam; 3 is the lower corner piece; 4 is the horizontal connecting plate; 5 is the foundation; 6 is the perfusion hole; 7 is the structural steel bar; 8 is the perfusion operation hole; 9 is the concrete outlet; 10 is the node connecting steel pipe; 11 is the intermediate connecting steel pipe. Specific embodiments

[0016] To further understand the content, features and effects of the present invention, the following embodiments are exemplified and described in detail with reference to the accompanying drawings as follows:

[0017] Please refer to Figures 1 to 5 , a rigid connection node for inserting steel bars and grouting of a module building foundation-module unit, comprising a module unit and a foundation 5. The node is also provided with an intermediate connecting piece and a structural steel bar 7.

[0018] A perfusion hole 6 is reserved on the foundation 5.

[0019] The module unit is provided with a module column 1, a floor beam 2 and a lower corner piece 3. The lower corner piece 3 adopts a box structure and is vertically connected to the module column 1 and the floor beam 2 respectively. A perfusion operation hole 8 offset outside the module column 1 is provided at the top, and a concrete outlet 9 directly below the module column 1 is provided at the bottom. A node connecting steel pipe 10 is provided above the concrete outlet 9. The node connecting steel pipe 10 is arranged inside the box structure and is fixedly connected to the top of the box structure at the upper end.

[0020] The intermediate connecting piece is provided with a horizontal connecting plate 4 clamped between the module unit and the foundation 5. An intermediate connecting steel pipe 11 is vertically connected to the horizontal connecting plate 4. The upper end of the intermediate connecting steel pipe 11 protrudes from the horizontal connecting plate 4 to form a positioning joint matching the concrete outlet 9. Most of the intermediate connecting steel pipe 11 is inserted into the perfusion hole 6. The perfusion hole 6 is inserted with the structural steel bar 7. The structural steel bar 7 passes through the intermediate connecting steel pipe 11 and the upper end is inserted into the node connecting steel pipe 10.

[0021] The box structure of the lower corner piece, the node connecting steel pipe 10 and the perfusion hole 6 are filled with an integrally formed concrete entity. The module unit and the foundation 5 are connected together through a reinforced concrete structure penetrating the intermediate connecting piece.

[0022] The construction process of the present invention:

[0023] 1) Before the module unit arrives at the site, construct the foundation 5 according to the design dimensions, and reserve perfusion holes 6 on the foundation. Reserve structural steel bars 7 in the perfusion holes 6.

[0024] 2) After the module unit is transported to the site, first insert the intermediate connecting steel pipe 11 on the horizontal connecting plate 4 into the perfusion hole 6, and make the structural steel bar 7 pass through the intermediate connecting steel pipe 11, and then complete the fixation of the horizontal connecting plate 4.

[0025] 3) Lift and install the module unit, and after aligning the concrete outlet on the lower corner fitting 3 with the positioning joint on the horizontal connecting plate, lower it to complete the connection between the concrete outlet and the intermediate connecting steel pipe 11. At this time, there is a certain interval between the intermediate connecting steel pipe 11 and the node connecting steel pipe 10, which allows the poured concrete to be injected into the intermediate connecting steel pipe 11.

[0026] 4) Inside the module unit, check the installation situation through the perfusion operation hole 8, and then start the perfusion of concrete. Observe the concrete perfusion situation at all times. Stop the perfusion after the concrete fills the corner fitting, and conduct quality inspection. After the concrete strength reaches the standard, the connection node completes the connection work.

[0027] The rigid connection node proposed by the present invention has strong applicability and can be used in the connection areas between the corners, edges and the middle part of the integrated box house structure and the foundation. It also realizes no on-site welding and does not require additional operation space, which can improve the construction efficiency and achieve convenient and fast installation.

[0028] Although the preferred embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the claims of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A rigid connection node for inserting reinforcement bars and grouting in a modular building foundation - modular unit, comprising a modular unit and a foundation, characterized in that, the node is further provided with an intermediate connecting member and construction reinforcement bars; perfusion holes are reserved on the foundation, the modular unit is provided with a modular column, a floor beam and a lower corner member, the lower corner member adopts a box structure, is vertically connected to the modular column and the floor beam respectively, is provided with a perfusion operation hole offset outside the modular column at the top, is provided with a concrete outlet directly below the modular column at the bottom, a node connecting steel pipe is provided above the concrete outlet, the node connecting steel pipe is arranged in the box structure, and the upper end is fixedly connected to the top of the box structure; the intermediate connecting member is provided with a horizontal connecting plate clamped between the modular unit and the foundation, an intermediate connecting steel pipe is vertically connected to the horizontal connecting plate, the upper end of the intermediate connecting steel pipe protrudes from the horizontal connecting plate to form a positioning joint matching the concrete outlet, most of the intermediate connecting steel pipes are inserted into the perfusion holes, construction reinforcement bars are inserted into the perfusion holes, the construction reinforcement bars pass through the intermediate connecting steel pipes, and the upper ends are inserted into the node connecting steel pipes, the box structure of the lower corner member, the node connecting steel pipe and the perfusion holes are filled with an integrally formed concrete entity.

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