CN106760139B - Externally-attached modularized building structure and construction method thereof - Google Patents

Abstract

The utility model discloses an externally-attached modularized building structure and a construction method thereof, wherein the externally-attached modularized building structure comprises a vertically-arranged central structure and a plurality of module units positioned at the periphery of the central structure, the plurality of module units are vertically distributed into a plurality of layers, each module unit positioned at different layers corresponds to each other in a one-to-one mode, the horizontal rigidity, the vertical rigidity and the torsional rigidity of the central structure meet the integral anti-overturning requirement of the building structure, the outer ends of skeletons of the module units are connected with the outer ends of skeletons of the central structure so that the module units are attached to the outer side wall of the central structure to form independent cantilevers, the module unit at the bottommost layer is positioned above the ground, gaps are reserved between the module units corresponding to the adjacent layers, and each module unit does not participate in integral anti-overturning of the building. The utility model can realize design modularization, manufacturing standardization and installation convenience; the on-site installation nodes are greatly reduced, the construction is simplified, the construction period is shortened, the potential safety hazard is small, the precision is easy to control, and the popularization and the application of the modularized building are facilitated.

Description

An externally attached modular building structure and its construction method

Technical field

The invention relates to an externally attached modular building structure and a construction method of the externally attached modular building structure.

Background technique

Modular building is an emerging building structure system. This system uses each room as a modular unit. Each modular unit is prefabricated in the factory, and the internal space of the module can be arranged and decorated in the factory. After completion, After being transported to the site, the central structure (such as the core tube) of the modular building is usually constructed on site. The core tube can be a reinforced concrete structure poured on site, or it can be a steel structure or a steel-concrete composite structure. Between each unit module And the unit modules and the core tube are assembled into the whole building through reliable connections. Building modular units are usually complete internally and require almost no on-site mechanics, thus significantly reducing on-site work time. Compared with traditional building construction methods, modular buildings have the advantages of shortening the construction period, saving manpower and material resources, being green and environmentally friendly, and having excellent quality.

China's authorized utility model patent (ZL201420038867.1) discloses a building module and a mid-to-high-rise modular building with the building module, including: a frame; roof panels and floor panels respectively provided on the top, bottom and sides of the frame and a wall, which includes an exterior wall, an interior wall, and an insulation layer between the exterior wall and the interior wall. Doors and windows are provided on the wall; a connecting portion is used to connect the building module to the building module. When stacking the core tubes surrounding the mid-rise modular building, the adjacent building modules are connected, and the building modules and the core tubes are connected. Mid-rise and high-rise modular buildings are mainly composed of a core tube and multiple building module units. Multiple building modules surround the core tube and are stacked into a multi-story building structure. The core tube runs through the entire height of the building structure. Multiple building modules and the core tube are combined and connected to form a floor structure of the building structure. The floor structure composed of building modules is stacked layer by layer in the height direction of the core tube to form a high-rise building.

However, the above-mentioned modular buildings still have the following defects during the construction process:

⑴ Modular buildings adopt a superposition and assembly method. Each building module needs to be connected, and each building module is also connected to the core tube. The skeleton of the building module participates in the overall stress of the building structure, that is, the skeleton of the building module is the skeleton of the building structure. component. This modular building is more suitable for low and multi-storey buildings (the number of building floors is less than 7 floors). When used in high-rise and super high-rise buildings (the number of building floors is greater than 10 floors), according to the stress characteristics of the building modules, they can be assembled according to the superposition method. In this way, force is transmitted layer by layer, and the skeleton cross-section of the building module will be larger at the bottom and smaller at the top. The cross-section types need to be increased more, which greatly reduces the standardization of manufacturing and the convenience of installation.

⑵ Each building module is connected horizontally and vertically, resulting in many on-site installation nodes, cumbersome construction, extended construction period, high safety hazards, and difficulty in controlling accuracy, which is not conducive to the promotion and application of modular buildings.

Contents of the invention

The first object of the present invention is to provide an externally attached modular building structure that can achieve modular design, standardized manufacturing, convenient installation, improved construction efficiency, shortened construction period, good safety, and high construction precision.

The second object of the present invention is to provide a construction method for the above-mentioned externally attached modular building structure.

The first object of the present invention is achieved by the following technical measures: an externally attached modular building structure, which includes a vertically arranged central structure and several modular units located on the periphery of the central structure. It is arranged into several layers vertically, and each module unit located on different layers corresponds vertically. It is characterized in that: the horizontal stiffness, vertical stiffness and torsional stiffness of the central structure meet the overall anti-overturning requirements of the building structure. The outer end of the skeleton of the module unit is connected to the outer end of the skeleton of the central structure so that each module unit fits on the outer wall of the central structure to become an independent cantilever. The lowest module unit is above the ground, and between the corresponding module units on adjacent floors There are gaps, and each module unit does not participate in the overall overturning resistance of the building.

The present invention sets module units on the periphery of the central structure. Each module unit is connected to the central structure. Each module unit is attached to the outer wall of the central structure to become an independent cantilever. Since the horizontal stiffness, vertical stiffness and torsional stiffness of the central structure can meet The relevant specifications of this industry refer to the "Seismic Design Code for Buildings", "Technical Regulations for Concrete Structures of High-Rise Buildings", etc. Therefore, each module unit does not need to set up other vertical load-bearing components, which do not participate in the overall overturning resistance of the building. , when modeling and calculating the overall anti-overturning of the building structure, the stress of the module unit is not included in the calculation. When the present invention is suitable for high-rise and super-high-rise modular buildings, it solves the problem of increasing the number of skeleton cross-section types of existing building modules. There are many technical problems that greatly reduce the standardization of manufacturing and the convenience of installation. It can achieve modular design, standardization of manufacturing, and convenience of installation. In addition, each building module of the present invention is only connected to the central structure in the horizontal direction, and the number of on-site installation nodes is greatly reduced. , simplifies construction, shortens construction period, improves construction efficiency, has small safety hazards, and is easy to control precision, which is conducive to the promotion and application of modular buildings.

As an embodiment of the present invention, the central structure is a reinforced concrete core tube, a frame central support structure or a dense column frame central support structure, and other structures can also be used.

Whether adjacent modular units on each floor are connected should be determined based on the functional layout of the modular building and actual stress requirements, and it only needs to meet the requirements of current regulations. Adjacent module units on each floor are connected to each other so that the module units on each floor are connected into one body.

There is no need to connect the corresponding module units on adjacent layers. However, in order to avoid the failure of the connection between the module unit and the central structure, causing the module unit to fall off the central structure, a safety line of defense needs to be added. Corresponding modular units are connected to each other so that the modular units are vertically connected into one body.

As an embodiment of the present invention, the externally attached modular building structure also includes a modular unit located at a corner position of the building structure. The skeleton of the modular unit located at the corner position and the modular unit adjacent to it on the same floor The skeletons are connected.

The second object of the present invention is achieved through the following technical measures: a construction method of the above-mentioned cantilevered modular building structure, which is characterized by specifically including the following steps:

Step 1: Construct the central structure on site and prefabricate each module unit in the factory;

The modular unit can be a room, or each partition of the house can be combined into one modular unit according to the actual situation. Taking a single apartment as an example, the corridor, balcony, room, and bathroom can be combined into one modular unit.

Step 2: After the construction of the central structure is completed, each module unit is transported to the construction site;

Step 3: Lift the lowest module unit to the installation position, and connect the outer end of the skeleton of each module unit on this layer to the outer end of the skeleton of the central structure, so that each module unit on this layer is at the periphery of the central structure;

Step 4: Lift the module unit on the penultimate floor to the installation position. The module unit on the penultimate floor corresponds vertically to the module unit on the lowest floor. Connect the outer end and center of the skeleton of each module unit on this floor. The outer ends of the skeleton of the structure are connected so that each module unit of this layer is at the periphery of the central structure, and there is a gap between the module unit of the penultimate layer and its corresponding module unit of the lowest layer;

Step 5: Repeat step 4, that is, install each module unit layer by layer from bottom to top until the installation of each module unit on the top layer is completed, and each module unit forms an independent cantilever as a whole.

In the design stage of the present invention, the building structure must be modeled to calculate the overall overturning resistance of the building structure. Each module unit does not participate in the calculation of the overall overturning resistance of the building. The horizontal stiffness, vertical stiffness and torsional stiffness of the central structure should meet the requirements of the building structure. Overall anti-overturning requirements.

As an embodiment of the present invention, after completing step 5, the electromechanical pipeline connection between each module unit is performed, or during the installation process of each layer of module units, the electromechanical pipeline connection between each module unit is performed.

Whether adjacent modular units on each floor are connected should be determined based on the functional layout of the modular building and actual stress requirements, and it only needs to meet the requirements of current regulations. The present invention can connect adjacent module units on each layer so that the module units on each layer are connected into one body.

There is no need to connect the module units corresponding to adjacent layers. However, in order to avoid the failure of the connection between the module unit and the central structure, causing the module unit to fall off the central structure, a safety line of defense needs to be added. The present invention will Corresponding modular units on adjacent floors are connected so that the modular units are vertically connected into one body.

Compared with the prior art, the present invention has the following significant effects:

⑴ The present invention sets module units on the periphery of the central structure. Each module unit is connected to the central structure. Each module unit is attached to the outer wall of the central structure to become an independent cantilever. Due to the horizontal stiffness, vertical stiffness and torsional stiffness of the central structure, it can It meets the requirements of relevant specifications in this industry. Therefore, each module unit does not need to be equipped with other vertical load-bearing components, which do not participate in the overall anti-overturning of the building. When the present invention is suitable for high-rise and super-high-rise modular buildings, it solves the problem of existing buildings. The increasing number of module skeleton cross-section types has caused technical difficulties in manufacturing standardization and installation convenience, which can achieve modular design, manufacturing standardization, and installation convenience;

⑵ Each building module of the present invention is only connected to the central structure in the horizontal direction, greatly reducing on-site installation nodes, simplifying construction, shortening the construction period, improving construction efficiency, and having little safety hazards and easy control of accuracy, which is conducive to the development of modular buildings. Promote applications.

⑶ According to the present invention, the module units corresponding to adjacent layers can be connected or not connected. The module units can be vertically connected into one body, which adds a line of security and prevents the failure of the connection between the module unit and the central structure. Detachment from the central structure occurs.

Description of the drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Figure 1 is a schematic plan view of the present invention;

Figure 2 is a cross-sectional view along A-A in Figure 1 of the present invention;

Figure 3 is a schematic cross-sectional view of the connection between the side wall frame of the modular unit and the frame of the central structure according to the present invention;

Figure 4 is an elevation view of the calculation model of the present invention;

Figure 5 is a three-dimensional isometric view of the calculation model of the present invention.

Detailed ways

As shown in Figures 1 to 3, it is an externally attached modular building structure 6 of the present invention. It is a twenty-three-story high-rise building. It includes a vertically arranged central structure 1 and several structures located on the periphery of the central structure 1. It is a rectangular module unit 2. Several module units 2 are vertically arranged into several layers. Each module unit 2 located on different layers corresponds to one in the vertical direction. In this embodiment, the central structure 1 is two cores. tube, the horizontal stiffness, vertical stiffness and torsional stiffness of the central structure 1 all meet the overall anti-overturning requirements of the building structure. The inner end of the skeleton of each module unit 2 is connected to the outer end of the skeleton of the central structure 1 so that each module unit 2 fits in the center The outer wall of the structure 1 becomes an independent cantilever. As shown in Figure 3, the skeleton of the module unit 2 is a plane truss structure 7. The outer end of the plane truss structure 7 is connected to the outer end of the skeleton 8 of the core tube 1 through bolts. It can also be Use other mechanical connection methods to ensure that the module unit is stably attached to the outside of the core tube 1. The module unit on the lowest floor is above the ground, that is, the module unit has no foundation, and there are gaps between corresponding module units on adjacent floors. Each module unit 2 does not participate in the overall overturning resistance of the building.

In this embodiment, the exterior-mounted modular building structure is a rectangular body. The exterior-mounted modular building structure also includes module units 5 located at the corners of the building structure. The skeleton of the module units 5 located at the corners and adjacent modules on the same floor The skeletons of modular units 2 are connected. In this embodiment, there are four corner positions, and each corner position has three module units 5 arranged side by side at the corner positions. The three module units 5 are all the same rectangular body as the module unit 2. The side of one module unit 5 is connected to the module unit on the adjacent side of the same floor, and the ends of the three module units 5 are connected to the module units on the other adjacent layer on the same floor. In other embodiments, the modular units at the corners can also be connected in other ways.

As shown in Figures 4 and 5, it is a case calculation model of the externally attached modular building structure of the present invention. The central structure of the calculation model is a concrete core tube with a thickness of 300 to 400 mm. The skeleton of the modular unit is a planar truss structure, with length × width × height. =9.0×3.0×3.0m. The overall performance index of the structure of the present invention is: the first three periods are 1.15s (x-direction translation), 0.70s (y-direction translation), and 0.65s (torsion), and the maximum inter-story displacement angle under frequent earthquakes of 7 degrees is 1/3537 , there is no sudden change in stiffness and shear bearing capacity, therefore, the overall index meets the specification requirements.

In other embodiments, the central structure may also be a frame central support structure or a dense column frame central support structure, etc.

Whether adjacent modular units on each floor are connected depends on the functional layout of the modular building and the actual stress requirements. Specifically, it requires modeling and calculation to meet the requirements of the current specifications. Therefore, in other embodiments, each unit can be Module units on adjacent floors are connected so that the module units on each floor are connected into one.

Module units corresponding to adjacent layers may or may not be connected. However, in order to prevent the failure of the connection between the module unit and the central structure, causing the module unit to fall off the central structure, a safety line of defense needs to be added. Therefore, , in other embodiments, the module units corresponding to adjacent layers can be connected so that the module units are vertically connected into one body. After the module units corresponding to adjacent layers are connected, the gap between them There is none.

A construction method for the above-mentioned externally attached modular building structure specifically includes the following steps:

Step 1: Construct the central structure on site and prefabricate each module unit in the factory;

The modular unit can be a room, or each partition of the house can be combined into one modular unit according to the actual situation. Taking a single apartment as an example, the corridor, balcony, room, and bathroom can be combined into one modular unit.

Step 2: After the construction of the central structure is completed, each module unit is transported to the construction site;

Step 3: Lift the lowest module unit to the installation position, and connect the outer end of the skeleton of each module unit on this layer to the outer end of the skeleton of the central structure, so that each module unit on this layer is at the periphery of the central structure;

Step 4: Lift the module unit on the penultimate floor to the installation position. The module unit on the penultimate floor corresponds vertically to the module unit on the lowest floor. Connect the outer end and center of the skeleton of each module unit on this floor. The outer ends of the skeleton of the structure are connected so that each module unit of this layer is at the periphery of the central structure, and there is a gap between the module unit of the penultimate layer and its corresponding module unit of the lowest layer;

Step 5: Repeat step 4, that is, install each module unit layer by layer from bottom to top until the installation of each module unit on the top layer is completed, and each module unit forms an independent cantilever as a whole.

Make the electromechanical pipeline connection between each module unit, or perform the electromechanical pipeline connection between each module unit during the installation process of each floor module unit.

In the design stage of the present invention, the building structure must be modeled to calculate the overall overturning resistance of the building structure. Each module unit does not participate in the calculation of the overall overturning resistance of the building. The horizontal stiffness, vertical stiffness and torsional stiffness of the central structure should meet the requirements of the building structure. Overall anti-overturning requirements.

In other embodiments, if necessary, corresponding module units on adjacent layers can be connected so that the module units are vertically connected into one body. Adjacent module units on each floor can also be connected to connect the module units on each floor into one body.

The embodiments of the present invention are not limited to this. According to the above content of the present invention, according to the common technical knowledge and common means in the field, without departing from the above basic technical ideas of the present invention, the present invention can also be made in various other forms. Modifications, replacements or changes all fall within the scope of protection of the present invention.

Claims (8)

1. The utility model provides an outer subsides formula modularization building structure, it includes the central structure of vertical setting and is located the peripheral several module unit of central structure, several module unit arranges the several layers in vertical, each module unit that is located different layers is in vertical one-to-one, its characterized in that: the horizontal rigidity, the vertical rigidity and the torsional rigidity of the central structure meet the integral anti-overturning requirement of the building structure, the outer ends of the skeletons of the module units are connected with the outer ends of the skeletons of the central structure through bolts, so that the module units are attached to the outer side wall of the central structure to form independent cantilevers, the module unit at the bottommost layer is above the ground, gaps are reserved between the corresponding module units at the adjacent layers, and the module units do not participate in integral anti-overturning of the building; the corresponding module units of the adjacent layers are connected with each other so that the module units are vertically connected into a whole.

2. The exterior modular building structure of claim 1, wherein: the central structure is a reinforced concrete core tube, a frame central supporting structure or a dense column frame central supporting structure.

3. The externally applied modular building structure of claim 2 wherein: the adjacent module units of each layer are connected to each other so that the module units of each layer are connected into a whole.

4. A patch-type modular building structure according to claim 3, wherein: the externally-attached modular building structure further comprises a module unit positioned at the corner position of the building structure, and the framework of the module unit positioned at the corner position is connected with the framework of the module unit adjacent to the same layer.

5. A method of constructing a self-contained modular building structure as claimed in claim 1, comprising the steps of:

step 1, constructing a central structure on site, and prefabricating each module unit in a factory;

step 2, completing the construction of the central structure, and conveying each module unit to a construction site;

step 3, hoisting the module units at the bottommost layer to the installation position, and connecting the outer ends of the skeletons of the module units at the layer with the outer ends of the skeletons of the central structure to enable the module units at the layer to be positioned at the periphery of the central structure;

step 4, hoisting the module units of the penultimate layer to the installation position, wherein the module units of the penultimate layer vertically correspond to the module units of the bottommost layer one by one, the outer ends of the frameworks of the module units of the layer are connected with the outer ends of the frameworks of the central structure, so that the module units of the layer are positioned at the periphery of the central structure, and gaps are reserved between the module units of the penultimate layer and the corresponding module units of the bottommost layer;

and 5, repeating the step 4, namely installing each module unit layer by layer from bottom to top until the installation of each module unit on the top layer is completed, wherein each module unit integrally forms an independent cantilever.

6. The construction method according to claim 5, wherein: after step 5 is completed, the electromechanical line connection between the respective module units is performed, or during the installation of each layer of module units, the electromechanical line connection between the respective module units is performed.

7. The construction method according to claim 6, wherein: the corresponding module units of the adjacent layers are connected to each other so that the module units are vertically connected as one body.

8. The construction method according to claim 7, wherein: and connecting the adjacent module units of each layer into a whole.