WO2026025440A1 - Uhpc prefabricated house - Google Patents

Abstract

An UHPC prefabricated house, consisting of prefabricated components. The prefabricated components are made of ultra-high-performance concrete (UHPC), and the prefabricated components comprise a prefabricated foundation (1), prefabricated columns (2), prefabricated beams (3), prefabricated plates (4), prefabricated outer wall panels (5) and prefabricated stairs. The prefabricated components can be quickly assembled by means of butt joint, and after assembling, the prefabricated house can be directly put into use, featuring a short construction period and no impact from seasons. The prefabricated components can be easily assembled and disassembled and can be reused, thereby effectively reducing environmental pollution. The prefabricated components only involve few models and controllable mold usage, thereby exhibiting good economy and satisfying requirements for rapid mass production. In addition, UHPC has excellent strength, which can effectively improve the durability of prefabricated components, thereby enabling houses to better resist damage caused by environmental erosion, temperature changes, severe weather, and other factors.

Description

A UHPC prefabricated house Technical Field

This utility model relates to the field of prefabricated housing technology, and more specifically, to a UHPC prefabricated housing.

Background Technology

Cast-in-place concrete structures are concrete structures built on-site with formwork erected in place and then cast monolithically. Due to their good integrity and low cost, cast-in-place structures are widely used in the construction industry. However, cast-in-place construction requires a large amount of formwork, resulting in a large amount of on-site work, numerous procedures, the need for curing, and a longer construction period. Furthermore, cast-in-place construction is greatly affected by seasonal changes, involves a significant amount of wet work on-site, and generates more pollution. Another significant drawback of cast-in-place concrete is its susceptibility to cracking, especially when the concrete volume is large and curing conditions are inadequate, which can easily lead to large-area cracking.

Utility Model Content

This utility model provides a UHPC prefabricated house to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: a UHPC prefabricated house, wherein the UHPC prefabricated house is composed of prefabricated components, the prefabricated components being UHPC prefabricated concrete components; the prefabricated components include prefabricated foundations, prefabricated columns, prefabricated beams, prefabricated slabs, prefabricated exterior wall panels, and prefabricated stairs; the prefabricated foundation is connected to the ground; the prefabricated foundation and the prefabricated column are connected by pre-embedded bolts; the prefabricated column and the prefabricated beam are connected by bolts; the prefabricated slab is installed on the prefabricated beam and connected by bolts; the prefabricated exterior wall panel is connected to the prefabricated beam and the prefabricated slab respectively by bolts; two adjacent prefabricated columns in the vertical direction are spliced together.

Preferably, the precast column has a square cross-section, with a first connecting box at each of its four corners, and a second connecting box between two adjacent first connecting boxes. The precast foundation has multiple embedded bolts, which connect the first connecting boxes to the precast foundation. and the second connecting box; the precast foundation and the precast column are connected and leveled by grouting.

Preferably, the precast column is provided with a corbel for supporting the precast beam, the upper part of the precast column is provided with a first sleeve, the precast beam is provided with a third connecting box that cooperates with the first sleeve, and the first sleeve and the third connecting box are connected by bolts; the precast beam and the corbel are connected and leveled by grouting.

Preferably, the precast beam includes a main beam and a secondary beam; the secondary beam has a rectangular cross-section and a fourth connecting box is provided at each of its four corners; the main beam is provided with a second sleeve that cooperates with the fourth connecting box, and the second sleeve and the fourth connecting box are connected by bolts.

Preferably, a third sleeve is provided on one side of the precast slab and a fifth connecting box is provided on the other side; when two adjacent precast slabs are joined together, the fifth connecting box of one precast slab is connected to the third sleeve on the other precast slab by bolts; a fourth sleeve is provided on the precast beam, and the bottom of the fifth connecting box is connected to the fourth sleeve by bolts.

Preferably, the precast exterior wall panel is provided with a sixth connecting box, the precast beam is provided with a fifth sleeve that mates with the sixth connecting box, and the precast panel is provided with a through hole; the sixth connecting box and the fifth sleeve are connected by bolts; the precast exterior wall panel, the precast panel and the precast beam are connected by bolts, and when connected, the bolts pass through the through hole to connect the fifth sleeve and the sixth connecting box; a mortar layer is provided between the precast exterior wall panel and the precast panel.

Preferably, the bottom of the precast column is pre-embedded with a grouting sleeve, and the top is provided with multiple steel bars. When adjacent precast columns are spliced in the vertical direction, the steel bars of the lower precast column are inserted into the grouting sleeve of the upper precast column, and the grouting sleeve is filled with grout.

Preferably, the interior of the prefabricated exterior wall panel is filled with rock wool.

Preferably, the prefabricated exterior wall panel has a hollow area, and a decorative hanging panel is provided on the hollow area. The decorative hanging panel has a hollow structure and is a UHPC concrete decorative hanging panel.

Compared with the prior art, the beneficial effects of this utility model are: the UHPC device of this utility model Prefabricated houses are assembled from precast foundations, precast columns, precast beams, precast slabs, precast exterior wall panels, and precast stairs. The components can be quickly connected and installed, allowing for direct use after assembly. Construction is short and unaffected by seasonal changes. Disassembly and assembly of components are simple, and they can be reused, effectively reducing environmental pollution. This invention features fewer types of precast components, controllable mold usage, and good economic efficiency, meeting the requirements for rapid mass production. Furthermore, the excellent strength of UHPC concrete effectively improves the durability of precast components, enabling the houses to better resist damage from environmental erosion, temperature changes, and severe weather.

Attached Figure Description

Figure 1 is a structural diagram of the UHPC prefabricated house according to an embodiment of the present invention;

Figure 2 is an exploded view of the UHPC prefabricated house according to an embodiment of the present invention;

Figure 3 is a schematic diagram of the installation structure of the prefabricated foundation and prefabricated columns of the UHPC prefabricated house according to an embodiment of the present invention.

Figure 4 is a cross-sectional view of the prefabricated column of the UHPC prefabricated house according to an embodiment of the present invention;

Figure 5 is a schematic diagram of the installation structure of the precast columns and precast beams of the UHPC prefabricated house according to an embodiment of the present invention.

Figure 6 is a schematic diagram of the installation structure of the prefabricated beams of the UHPC prefabricated house according to an embodiment of the present invention.

Figure 7 is a structural schematic diagram of the secondary beam of the UHPC prefabricated house according to an embodiment of the present invention;

Figure 8 is a schematic diagram of the installation structure of the precast beams and precast slabs of the UHPC prefabricated house according to an embodiment of the present invention.

Figure 9 is a schematic diagram of the installation structure between the prefabricated exterior wall panels, prefabricated beams, and prefabricated slabs of the UHPC prefabricated house according to an embodiment of the present utility model.

Figure 10 is a schematic diagram of the splicing structure of the prefabricated columns of the UHPC prefabricated house according to an embodiment of the present utility model.

In Figures 1 to 10, the correspondence between the component names and the figure numbers is as follows:
1--Precast foundation, 11--Embedded bolt, 2--Precast column, 21--First connecting box, 22--Second connecting box, 23--Corner, 24--First sleeve, 25--Grouting sleeve, 26--Reinforcing bar, 3--Precast beam, 31--Third connecting box, 32--Main beam, 33--Secondary beam, 34--Fourth connecting box, 35--Second sleeve, 36--Fourth sleeve, 37--Fifth sleeve, 4--Precast slab, 41--Third sleeve, 42--Fifth connecting box, 5--Precast exterior wall panel, 51--Sixth connecting box.

Detailed Implementation

The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Please refer to Figures 1 to 10. This utility model provides a UHPC prefabricated house, which is composed of prefabricated components made of UHPC concrete. The prefabricated components include a prefabricated foundation 1, prefabricated columns 2, prefabricated beams 3, prefabricated slabs 4, prefabricated exterior wall panels 5, and prefabricated stairs. The prefabricated foundation 1 is connected to the ground. The prefabricated foundation 1 and the prefabricated columns 2 are connected by pre-embedded bolts 11. The prefabricated columns 2 and the prefabricated beams 3 are connected by bolts. The prefabricated slabs 4 are installed on the prefabricated beams 3 and connected to the ground. The precast exterior wall panels 5 are connected by bolts to the precast beams 3 and the precast slabs 4, respectively; two adjacent precast columns 2 are spliced together in the vertical direction.

In this embodiment of the invention, the UHPC prefabricated house is assembled from prefabricated components, including a prefabricated foundation 1, prefabricated columns 2, prefabricated beams 3, prefabricated slabs 4, prefabricated exterior wall panels 5, and prefabricated stairs. All components are supported by UHPC concrete, which is ultra-high performance concrete, characterized by its ultra-high strength, ultra-high toughness, and ultra-high durability. It exhibits excellent and stable overall performance, significantly extending the product lifecycle. The substrate material made from UHPC material has even higher performance, reaching 140–160 MPa. The prefabricated slab 4, made of UHPC concrete, is only 15–20 mm thick, exhibiting high strength and good toughness. While maintaining high strength, its thickness and weight are well controlled, reducing hoisting and transportation costs.

In this embodiment, the precast foundation 1 is connected to the ground and serves to support the precast columns 2. The precast columns 2 can be stacked according to the requirements of the number of floors and floor height. Two precast columns 2 in the vertical direction are spliced together to meet the height requirements. The precast beam 3 is composed of multiple beams spliced together. The precast columns 2 support the precast beam 3, and then the precast slabs 4 are installed on the precast beam 3 to form the main frame of the building. Precast exterior wall panels 5 are installed around the main frame, and the floors are connected by precast stairs.

In this embodiment, all components are connected using bolted joint installation, resulting in fast installation and a short construction period. The limited number and specifications of prefabricated components in this embodiment facilitates mass production in factories, effectively reducing production costs.

Preferably, the precast column 2 has a square cross-section, with a first connecting box 21 at each of its four corners, and a second connecting box 22 between two adjacent first connecting boxes 21. The precast foundation 1 is provided with multiple embedded bolts 11, which connect the first connecting boxes 21 and the second connecting boxes 22 respectively. The precast foundation 1 and the precast column 2 are connected and leveled by grouting.

In this embodiment, four first connecting boxes 21 and four second connecting boxes 22 are provided at the bottom of the precast column 2. These eight connecting boxes are connected to the pre-embedded bolts 11 on the precast foundation 1 and then tightened with nuts to ensure a good connection between the precast column 2 and the precast foundation 1. Then, a layer of cement mortar is applied between the precast foundation 1 and the precast column 2 using a grouting method. This allows for leveling between the two contact surfaces and enhances the connection strength.

Preferably, the precast column 2 is provided with a corbel 23 for supporting the precast beam 3, the upper part of the precast column 2 is provided with a first sleeve 24, and the precast beam 3 is provided with a third connecting box 31 that cooperates with the first sleeve 24. The first sleeve 24 and the third connecting box 31 are connected by bolts; the precast beam 3 and the corbel 23 are connected and leveled by grouting. In this embodiment, the precast column 2 located at the side wall can support the precast beam 3 by setting a corbel 23 on one side, while the precast column 2 located inside the building can support the precast beam 3 by setting corbels 23 on both sides to increase the contact surface and make the precast beam 3 more stable.

Preferably, the precast beam 3 includes a main beam 32 and a secondary beam 33; the secondary beam 33 has a rectangular cross-section, with a fourth connecting box 34 at each of its four corners; the main beam 32 has a second sleeve 35 that mates with the fourth connecting box 34, and the second sleeve 35 is bolted to the fourth connecting box 34. In this embodiment, the precast beam 3 uses a combination of main beam 32 and secondary beam 33 to form a frame structure, and the main beam 32 and secondary beam 33 are also bolted together.

Preferably, the precast slab 4 has a third sleeve 41 on one side and a fifth connecting box 42 on the other side; when two adjacent precast slabs 4 are joined, the fifth connecting box 42 of one precast slab 4 is connected to the third sleeve 41 on the other precast slab 4 by bolts; the precast beam 3 has a fourth sleeve 36, and the bottom of the fifth connecting box 42 is connected to the fourth sleeve 36 by bolts. In this embodiment, two adjacent precast slabs 4 are locked together by bolts through the cooperation between the third sleeve 41 and the fifth connecting box 42. Then, the bottom of the groove of the fifth connecting box 42 on the precast slab 4 is joined to the precast beam 3 by bolts to achieve the slab-beam connection.

Preferably, the precast exterior wall panel 5 is provided with a sixth connecting box 51, the precast beam 3 is provided with a fifth sleeve 37 that cooperates with the sixth connecting box 51, and the precast slab 4 is provided with a through hole; the sixth connecting box 51 and the fifth sleeve 37 are connected by bolts; the precast exterior wall panel 5, the precast slab 4, and the precast beam 3 are connected by bolts, and when connected, the bolts pass through the through hole to connect the fifth sleeve 37 and the sixth connecting box 51; a mortar layer is provided between the precast exterior wall panel 5 and the precast slab 4. In this embodiment, the precast exterior wall panel 5 is connected in series with the precast slab 4 and the precast beam 3 by bolts, and then the precast exterior wall panel 5... A mortar layer is used to reinforce and level the area between the precast slab and the precast slab 4.

Preferably, the bottom of the precast column 2 is pre-embedded with a grouting sleeve 25, and the top is provided with multiple reinforcing bars 26. When adjacent precast columns 2 are spliced in the vertical direction, the reinforcing bars 26 of the lower precast column 2 are inserted into the grouting sleeve 25 of the upper precast column 2, and the grouting sleeve 25 is filled with grout. In this embodiment, the grouting sleeve 25 is pre-embedded at the bottom of the precast column 2, and grouting is performed after the two columns are hoisted and aligned.

Preferably, the prefabricated exterior wall panel 5 is filled with rock wool. In this embodiment, the prefabricated exterior wall panel 5 is filled with thermally insulating rock wool, which provides good thermal insulation.

Preferably, the prefabricated exterior wall panel 5 has a perforated area, and a decorative hanging panel is provided on the perforated area. The decorative hanging panel has a perforated structure and is made of UHPC concrete. In this embodiment, UHPC, due to its dense texture and high toughness, can produce decorative components of various forms with a smooth appearance, stain resistance, and weather resistance, greatly reducing the workload of later maintenance.

UHPC precast concrete components are precast components made of UHPC concrete; UHPC concrete decorative panels are decorative panels made of UHPC concrete.

Compared with existing technologies, the beneficial effects of this utility model are as follows: This UHPC prefabricated house is assembled from prefabricated foundations, prefabricated columns, prefabricated beams, prefabricated slabs, prefabricated exterior wall panels, and prefabricated stairs. The components can be quickly connected and installed, and the house can be put into use directly after assembly. The construction period is short and unaffected by seasons. Disassembly and assembly of the components are simple, and they can be reused, effectively reducing environmental pollution. This utility model has fewer types of prefabricated components, controllable mold usage, good economic efficiency, and meets the requirements for rapid mass production. Furthermore, the excellent strength of UHPC concrete effectively improves the durability of the prefabricated components, enabling the house to better resist damage caused by environmental erosion, temperature changes, and severe weather.

The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims (9)

A UHPC prefabricated house, characterized in that the UHPC prefabricated house is composed of prefabricated components, the prefabricated components being UHPC precast concrete components; the prefabricated components include prefabricated foundations (1), prefabricated columns (2), prefabricated beams (3), prefabricated slabs (4), prefabricated exterior wall panels (5) and prefabricated stairs. The precast foundation is connected to the ground; The precast foundation and the precast column are connected by pre-embedded bolts (11); The precast columns and the precast beams are connected by bolts; The precast slab is installed on the precast beam and connected by bolts; The precast exterior wall panels are connected to the precast beams and the precast slabs respectively by bolts; Two adjacent precast columns are spliced together in the vertical direction. According to claim 1, the UHPC prefabricated house is characterized in that the cross-section of the prefabricated column is a square structure, and a first connecting box (21) is provided at each of its four corners. A second connecting box (22) is provided between two adjacent first connecting boxes. A plurality of pre-embedded bolts are provided on the prefabricated foundation, and the first connecting box and the second connecting box are connected by the pre-embedded bolts respectively. The prefabricated foundation and the prefabricated column are connected and leveled by grouting. According to claim 1, the UHPC prefabricated house is characterized in that the prefabricated column is provided with a corbel (23) for supporting the prefabricated beam, the upper part of the prefabricated column is provided with a first sleeve (24), the prefabricated beam is provided with a third connecting box (31) that cooperates with the first sleeve, the first sleeve and the third connecting box are connected by bolts; the prefabricated beam and the corbel are connected and leveled by grouting. According to claim 3, the UHPC prefabricated house is characterized in that the prefabricated beam includes a main beam (32) and a secondary beam (33); the secondary beam has a rectangular cross-section and a fourth connecting box (34) is provided at each of its four corners; the main beam is provided with a second sleeve (35) that cooperates with the fourth connecting box; the second sleeve and the fourth connecting box are connected by bolts. According to claim 1, the UHPC prefabricated house is characterized in that a third sleeve (41) is provided on one side of the prefabricated slab and a fifth connecting box (42) is provided on the other side; when two adjacent prefabricated slabs are joined together, the fifth connecting box of one prefabricated slab is connected to the third sleeve on the other prefabricated slab by bolts; a fourth sleeve (36) is provided on the prefabricated beam, and the bottom of the fifth connecting box is connected to the fourth sleeve by bolts. According to claim 1, the UHPC prefabricated house is characterized in that a sixth connecting box (51) is provided on the prefabricated exterior wall panel, a fifth sleeve (37) that cooperates with the sixth connecting box is provided on the prefabricated beam, and a through hole is provided on the prefabricated panel; the sixth connecting box and the fifth sleeve are connected by bolts; the prefabricated exterior wall panel, the prefabricated panel and the prefabricated beam are connected by bolts, and when connected, the bolts pass through the through hole to connect the fifth sleeve and the sixth connecting box; a mortar layer is provided between the prefabricated exterior wall panel and the prefabricated panel. According to claim 1, the UHPC prefabricated house is characterized in that a grouting sleeve (25) is pre-embedded at the bottom of the prefabricated column and multiple steel bars (26) are provided at the top. When adjacent prefabricated columns are spliced in the vertical direction, the steel bars of the lower prefabricated column are inserted into the grouting sleeve of the upper prefabricated column and the grouting sleeve is filled with grouting material. According to claim 1, the UHPC prefabricated house is characterized in that the interior of the prefabricated exterior wall panel is filled with rock wool. According to claim 8, the UHPC prefabricated house is characterized in that a hollow area is provided on the prefabricated exterior wall panel, and a decorative hanging panel is provided on the hollow area. The decorative hanging panel has a hollow structure and is a UHPC concrete decorative hanging panel.