Ppvc space module with low center of gravity

Abstract

The utility model belongs to the technical field of PPVC modular buildings, and particularly relates to a low-center-of-gravity ppvc space module which comprises a module body of a hexahedron structure, four side walls of the module body are of non-uniform mass structures, the density of the four side walls is gradually reduced from bottom to top, the center of gravity of the module body is lower than that of a conventional PPVC space module, and the center of gravity of the module body is lower than that of the conventional PPVC space module. The four side walls of the conventional PPVC space module are of uniform mass structures. The characteristics that the density of the alkali-activated concrete is larger than that of common concrete but the structural strength is high are utilized, and the application proportion of the alkali-activated concrete in different sections is reasonably configured, so that the gravity center of the PPVC space module can be lowered, and then the gravity center of a building structure built by the module body is lowered through the accumulative effect; therefore, the stability and the anti-seismic property of the PPVC building are effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of PPVC modular building technology, specifically relating to a low-center-of-gravity PPVC space module. Background Technology

[0002] PPVC space modules are cubic box structures, including four walls, a top plate, and a bottom plate. Several PPVC space modules can be assembled into multi-story buildings, high-rise buildings, or building complexes.

[0003] The stability of PPVC building structures depends not only on their structural strength but also on the design of their center of gravity. Existing building center of gravity design mainly involves the following aspects:

[0004] 1. Geometric Center Method: This is the most intuitive and commonly used method. First, measure the length (L) and width (W) of the house, and then calculate its geometric center. The specific steps are as follows: Measure the length and width of the house, calculate the coordinates of the center point as L / 2 and W / 2, and mark these coordinates 1 on the floor.

[0005] 2. Diagonal Intersection Method: Draw the diagonals of the house; the intersection point is the center point of the house. The specific steps are as follows: Draw a straight line from one corner of the house to the other corner of the diagonal. Repeat this process to draw another diagonal line. The intersection point of the two diagonals is the center point 1 of the house.

[0006] 3. Use professional tools: Modern technology offers more precise tools, such as laser levels and building surveying instruments. These tools can be used to quickly and accurately determine the center point of the house. The specific steps are as follows: Use a laser level to emit lasers at the four corners of the house, adjust the laser level until it forms an intersection on the floor; this intersection is the center point 1 of the house.

[0007] However, existing technologies lack methods to improve structural stability by comprehensively utilizing building materials to lower the center of gravity of the building structure. This new invention is an improvement based on this. Utility Model Content

[0008] To address the problems of existing technologies, this invention discloses a low-center-of-gravity PPVC space module.

[0009] To achieve the above objectives, the technical solution of this utility model is as follows:

[0010] A low-center-of-gravity PPVC space module includes a hexahedral module body. The four side walls of the module body are non-uniform mass structures with a gradually decreasing density from bottom to top. The center of gravity of the module body is lower than that of a conventional PPVC space module, while the four side walls of a conventional PPVC space module are uniform mass structures.

[0011] Preferably, the four side walls of the module body are provided with several segments from bottom to top, and the density of the segments decreases from bottom to top.

[0012] Preferably, the bottom section is formed by casting alkali-activated concrete and a reinforcing cage, while the top section is formed by casting ordinary concrete and a reinforcing cage. The density of the alkali-activated concrete is greater than that of the ordinary concrete.

[0013] Preferably, the segment between the bottommost segment and the topmost segment is formed by casting a steel cage using a mixture of alkali-activated concrete and ordinary concrete, with the proportion of alkali-activated concrete decreasing sequentially from bottom to top.

[0014] Preferably, the steel cages of the four side walls are connected to each other to form a whole.

[0015] Preferably, a counterweight beam is provided at the bottom of the front side wall of the module body to balance the weight of the rear side wall of the module body.

[0016] Preferably, the left and right sidewalls of the module body have the same weight.

[0017] Preferably, the center of gravity of the building structure built from several modular bodies is located on the vertical line of the center of the bottom support surface of the building structure, and the center of gravity of the building structure built from several modular bodies is lower than the center of gravity of a building structure of the same shape and size built from conventional PPVC space modules.

[0018] The beneficial effects of this novel low-center-of-gravity PPVC space module are as follows:

[0019] This novel approach utilizes the fact that alkali-activated concrete has a higher density than ordinary concrete but higher structural strength. By rationally configuring the application ratio of alkali-activated concrete in different sections, the center of gravity of the PPVC space module can be lowered. In turn, through a cumulative effect, the center of gravity of the building structure built from the module body is lowered, thereby effectively improving the stability and seismic performance of the PPVC building. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this novel invention.

[0021] Figure 2 A schematic diagram of the structure of this novel structure with a counterweight beam.

[0022] Figure 3 This is a schematic diagram of the center of gravity of a building structure constructed from several modular bodies.

[0023] 1. Module body; 2. Top plate; 3. Front door; 4. Front window; 5. Side window; 6. Segment; 601. Bottom segment; 602. Second segment; 603. Third segment; 604. Fourth segment; 605. Top segment; 7. Counterweight beam; 8. Bottom support surface; 9. Vertical line; 10. Building structure built from several module bodies. Detailed Implementation

[0024] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0025] The following embodiments can be understood as a part of the local structure or method of the present invention, or as a combination of embodiments to explain the connotation of a larger range of structures or methods of the present invention.

[0026] Example 1

[0027] A low-center-of-gravity PPVC spatial module, such as Figure 1-3 As shown, the module body 1 includes a hexahedral structure. The four side walls of the module body 1 are non-uniform mass structures, and the density gradually decreases from bottom to top. The center of gravity of the module body 1 is lower than that of a conventional PPVC space module. The four side walls of the conventional PPVC space module are uniform mass structures.

[0028] In this embodiment, the four side walls of a conventional PPVC space module are of uniform mass, i.e., a reinforced concrete structure composed of ordinary concrete and a steel cage. While this structure has a relatively high center of gravity and meets structural stability requirements, there is room for further improvement. This novel design features four non-uniform mass structures for the module body 1, with density gradually decreasing from bottom to top. Therefore, the center of gravity of the module body can be lowered, thereby improving the stability and seismic performance of the PPVC space module.

[0029] Example 2

[0030] like Figure 1 As shown, the four side walls of the module body are provided with several segments 6 from bottom to top, and the density of the segments 6 decreases from bottom to top.

[0031] Example 3

[0032] like Figure 1 As shown, the bottom segment 601 is formed by casting alkali-activated concrete and a reinforcing cage, while the top segment 605 is formed by casting ordinary concrete and a reinforcing cage. The density of alkali-activated concrete is greater than that of ordinary concrete. The density of alkali-activated concrete is typically 3.1-3.6 g / cm³.3 The density of ordinary concrete is typically between 2.3 and 2.5 g / cm³. 3 In between, alkali-activated concrete and ordinary concrete of the required density can be configured according to the needs of the project.

[0033] like Figure 1 As shown, the section between the bottommost segment 601 and the topmost segment 605 is formed by casting a reinforced cage using a mixture of alkali-activated concrete and ordinary concrete, with the proportion of alkali-activated concrete decreasing sequentially from bottom to top. Because alkali-activated concrete has a higher density but higher strength than ordinary concrete, the mixed use achieves a gradual decrease in the density (mass) of the sidewall from bottom to top. Considering the impact of reserved doors and windows, the segments can be determined using the same surface area method, i.e., the surface area of ​​each segment is set to be the same (excluding the portion reserved for doors and windows).

[0034] like Figure 1 As shown, the steel cages of the four side walls are connected to each other to form a whole. That is, the mass of the steel cages is evenly distributed, but they are connected as a whole structure. Only the ratio of ordinary concrete to alkali-activated concrete in the segmented pouring is controlled.

[0035] Example 4

[0036] like Figure 2 As shown, a counterweight beam 7 is provided at the bottom of the front side wall of the module body 1 to balance the weight of the rear side wall of the module body. Of course, the counterweight can also take other forms. Usually, the front side wall has reserved doors and windows, so its weight is lower than that of the rear side wall, and the center of gravity is adjusted by setting the counterweight beam.

[0037] like Figure 1 , 2 As shown, the left and right sidewalls of the module body 1 have the same weight.

[0038] Example 5

[0039] like Figure 3 As shown, the center of gravity of the building structure 10, which is constructed from several modular bodies, is located on the vertical line 9 at the center of the bottom support surface 8 of the building structure. The center of gravity of the building structure 10, which is constructed from several modular bodies, is lower than the center of gravity of a building structure of the same shape and size constructed from conventional PPVC space modules.

[0040] In this implementation, since the center of gravity of each module body is lower than that of a conventional PPVC space module, due to the cumulative effect, the center of gravity of the building structure 10 built by several module bodies is lower than that of a building structure of the same shape and size built by conventional PPVC space modules, thereby improving the stability and seismic performance of the building structure.

[0041] The method for constructing the PPVC space module involved in this invention is the method described in the patent document with application number CN202010680526.4 and titled "A Method for Casting PPVC Modules by External Mold".

Claims

1. A low-center-of-gravity PPVC spatial module, characterized by: The module body includes a hexahedral structure. The four side walls of the module body are non-uniform mass structures with a gradually decreasing density from bottom to top. The center of gravity of the module body is lower than that of a conventional PPVC space module, while the four side walls of a conventional PPVC space module are uniform mass structures.

2. The low center of gravity PPVC space module as described in claim 1, characterized in that: The module body has four side walls with several segments arranged from bottom to top, and the density of the segments decreases from bottom to top.

3. A low-center-of-gravity PPVC spatial module as described in claim 2, characterized in that: The bottom section is formed by casting alkali-activated concrete and a reinforcing cage, while the top section is formed by casting ordinary concrete and a reinforcing cage. The density of alkali-activated concrete is greater than that of ordinary concrete.

4. A low-center-of-gravity PPVC spatial module as described in claim 3, characterized in that: The steel cages of the four side walls are connected to each other to form a whole.

5. A low-center-of-gravity PPVC spatial module as described in claim 4, characterized in that: A counterweight beam is provided at the bottom of the front side wall of the module body to balance the weight of the rear side wall of the module body.

6. A low-center-of-gravity PPVC spatial module as described in claim 5, characterized in that: The left and right sidewalls of the module body have the same weight.

7. A low-center-of-gravity PPVC spatial module as described in claim 6, characterized in that: The center of gravity of the building structure built from several modules is located on the vertical line of the center of the bottom support surface of the building structure. The center of gravity of the building structure built from several modules is lower than the center of gravity of a building structure of the same shape and size built from conventional PPVC space modules.

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