Building structure with heat insulation parapet wall

Abstract

The utility model relates to the technical field of building structures, and provides a building structure with a heat insulation parapet wall, which comprises a building main body and a parapet wall, the parapet wall is arranged on the periphery of the roof of the building main body; the building main body comprises a building main body structural beam, a building main body floor and a building main body edge beam; the building main body floor slab is arranged on the building main body structural beam; the parapet wall comprises a parapet wall structural beam, a heat insulation layer and a parapet wall structural column. The parapet wall structural beam is arranged above the building main body edge beam; the parapet wall structural columns are arranged at intervals; the parapet wall structural columns are connected with the parapet wall structural beams; a heat insulation layer is arranged between the building main body boundary beam and the parapet wall structural beam; the heat insulation layers and the parapet wall structural columns are arranged in a staggered mode. According to the parapet wall heat insulation structure, the heat insulation layer is arranged, connection from the parapet wall structure beam to the building main body edge beam can be blocked, the parapet wall heat bridge effect is avoided to the maximum extent, the construction difficulty is lowered, and the material consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, and in particular to a building structure with thermally broken parapet walls. Background Technology

[0002] The parapet wall is made of reinforced concrete and runs along the perimeter of the building's roof. Due to its long length and complex construction, and the high thermal conductivity of reinforced concrete, it is prone to heat loss, creating a significant linear thermal bridging effect.

[0003] Thermal bridging has the following adverse effects on buildings: 1. Heat loss leads to increased heating and cooling energy consumption; 2. Low internal surface temperature results in poor comfort and increases the risk of mold and condensation; 3. Uneven heat distribution causes significant local thermal expansion and contraction, affecting the service life of components.

[0004] The principle of dealing with thermal bridges is to avoid heat loss and disconnect the heat loss path, which is referred to as thermal bridge disconnection or thermal bridge-free design.

[0005] The current building structure adopts a fully cast-in-place reinforced concrete parapet wall system. The parapet wall is a continuous reinforced concrete slab. In the conventional design of parapet wall construction nodes, thermal insulation material is used to wrap the entire structure to reduce thermal bridges. However, this leads to problems such as excessive material consumption, difficult installation, and a heavy structural appearance that affects the facade effect. Utility Model Content

[0006] This utility model mainly addresses the technical problems of current building structures using reinforced concrete cast-in-place parapet walls, where the parapet wall is a continuous reinforced concrete slab, and the construction nodes of the parapet wall are wrapped with thermal insulation material to reduce thermal bridges, resulting in high material consumption and installation difficulty. It proposes a building structure with thermally insulated parapet walls. The thermally insulated layer can block the connection between the parapet wall structural beam and the main building edge beam, thereby minimizing the thermal bridge effect of the parapet wall, reducing construction difficulty, and reducing material consumption.

[0007] This utility model provides a building structure with a thermally insulated parapet wall, including: a main building body and a parapet wall; the parapet wall is arranged around the roof of the main building body;

[0008] The main building structure includes: main building structural beams, main building floor slabs, and main building edge beams;

[0009] The main building floor slab is set on the main building structural beam, and the main building side beam is set on the outer side of the main building floor slab;

[0010] The parapet wall includes: parapet wall structural beams, thermal insulation layer and parapet wall structural columns;

[0011] The parapet wall structural beam is located above the main building edge beam; the parapet wall structural columns are spaced apart; and the parapet wall structural columns are connected to the parapet wall structural beam; the outer sides of the parapet wall structural columns and the parapet wall structural beam are flush.

[0012] A thermal insulation layer is installed between the main building edge beams and the parapet wall structural beams; the thermal insulation layer is staggered with the parapet wall structural columns.

[0013] Preferably, the heat insulation layer is made of graphite polystyrene board.

[0014] Preferably, a roof insulation layer is laid on the main floor slab of the building;

[0015] The inner side of the parapet wall structural beam and the thermal insulation layer are covered with the inner insulation layer of the parapet wall.

[0016] Preferably, an outer parapet wall insulation layer is laid on the outside of the parapet wall structural beam and the thermal insulation layer.

[0017] Preferably, the roof insulation layer and the inner insulation layer of the parapet wall are made of XPS insulation board, graphite polystyrene board or sprayed polyurethane rigid foam insulation material.

[0018] The outer insulation layer of the parapet wall is preferably made of rock wool board, rock wool strip, XPS insulation board, graphite polystyrene board, thermosetting EPS board or vacuum insulation board, and the main structural beams, main floor slabs and side beams of the building are made of reinforced concrete.

[0019] Preferably, the parapet wall structural beams and parapet wall structural columns are made of reinforced concrete.

[0020] Preferably, the parapet wall structural beam is fixedly connected to the main keel of the decorative curtain wall via thermally broken supports;

[0021] The main keel of the decorative curtain wall is also fixedly connected to the side beams of the main building.

[0022] Preferably, a secondary decorative curtain wall frame is provided on the outer side of the main decorative curtain wall frame;

[0023] The decorative curtain wall panels are fixedly installed on the outer side of the secondary keel of the decorative curtain wall.

[0024] The building structure with thermally insulated parapet wall provided by this utility model has the following advantages compared with the prior art:

[0025] 1. In terms of performance: By transforming the parapet wall system from a linear to a point-like structure, the fully cast-in-place reinforced concrete system is adjusted to a parapet wall structural column system within a concrete frame and filled with a thermally insulated layer. The thermally insulated layer effectively blocks the connection between the parapet wall structural beam and the building's main edge beams. Regarding the linear thermal bridge heat transfer coefficient, a thermally insulated layer with a lower thermal conductivity is filled between the building's main edge beams and the parapet wall structural beams, reducing the linear heat transfer coefficient. This utility model uses a thermally insulated parapet wall, minimizing the thermal bridging effect, ensuring optimal indoor performance, reducing building energy loss, and effectively mitigating the impact of linear thermal bridging. The building's main floor slabs and main edge beams are completely enclosed by the roof insulation layer, the inner parapet wall insulation layer, the thermally insulated layer, and the outer parapet wall insulation layer, forming a continuous closed thermal shell that effectively guarantees the building's insulation performance.

[0026] 2. From an economic perspective: Conventional methods and common structural components are used in all methods to reduce thermal bridging, effectively controlling costs. Structural engineering, building physics, and architectural expertise are all utilized to design and verify the structure from multiple perspectives, including structural safety, effectiveness, and feasibility, ensuring the economic rationality of the actual implementation of the thermally broken parapet wall structure. This invention can be applied to building structures that emphasize envelope performance, such as low-carbon spaces and ultra-low near-zero energy buildings.

[0027] 3. In terms of load: The structural load of the parapet wall is reduced. The original reinforced concrete cast-in-place system is adjusted to a system of concrete frame parapet wall structural columns and infill thermal insulation layer. The amount of reinforced concrete is reduced and replaced with lightweight infill material, resulting in an overall reduction in load. While minimizing the thermal bridging effect of the parapet wall, it eliminates the need for complete insulation wrapping, reducing material usage. Installation is also easier, does not affect the building's structural shape, and the thickness of the decorative curtain wall is suitable, without compromising the facade effect. Attached Figure Description

[0028] Figure 1 This is a sectional view of the building structure with thermally insulated parapet provided by this utility model;

[0029] Figure 2 This utility model provides a three-dimensional building structure with a thermally insulated parapet wall. Figure 1 ;

[0030] Figure 3 This utility model provides a three-dimensional building structure with a thermally insulated parapet wall. Figure 2 .

[0031] Attached reference numerals: 1. Main structural beam of the building; 2. Main floor slab of the building; 3. Roof insulation layer; 4. Inner insulation layer of the parapet wall; 5. Side beam of the main building; 6. Outer insulation layer of the parapet wall; 7. Thermal insulation layer; 8. Parapet wall structural beam; 9. Parapet wall structural column; 10. Thermal insulation support; 11. Main keel of the decorative curtain wall; 12. Secondary keel of the decorative curtain wall; 13. Decorative curtain wall panel. Detailed Implementation

[0032] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0033] like Figure 1-3 As shown in the figure, an embodiment of the present invention provides a building structure with a thermally insulated parapet wall, comprising: a building body and a parapet wall; the parapet wall is arranged around the roof of the building body.

[0034] The main building structure includes: a main structural beam 1, a main floor slab 2, and main side beams 5. The main floor slab 2 is mounted on the main structural beam 1, and the main side beams 5 are mounted on the outer side of the main floor slab 2. The main structural beam 1, the main floor slab 2, and the main side beams 5 are all made of reinforced concrete. A roof insulation layer 3 is laid on the main floor slab 2.

[0035] The parapet wall includes: a parapet wall structural beam 8, a thermal insulation layer 7, and parapet wall structural columns 9. The parapet wall structural beam 8 is located above the main building edge beam 5. The parapet wall structural columns 9 are spaced apart and connected to the parapet wall structural beam 8, with their outer sides flush. A thermal insulation layer 7 is installed between the main building edge beam 5 and the parapet wall structural beam 8. The thermal insulation layer 7 and the parapet wall structural columns 9 are staggered; that is, the thermal insulation layer 7 is only interrupted at the parapet wall structural columns 9, transforming the thermal bridge area of ​​the parapet wall around the main building roof into point-like sections with columns. The thermal insulation layer 7 can block the connection from the parapet wall structural beam 8 to the main building edge beam 5. The parapet wall of this utility model is a thermally insulated parapet wall.

[0036] In this invention, the parapet wall structural beam 8 and the parapet wall structural column 9 are made of reinforced concrete. The thermal insulation layer 7 is preferably made of graphite polystyrene board. The height of the thermal insulation layer 7 is greater than or equal to 300 mm.

[0037] An inner parapet wall insulation layer 4 is laid on the inner side of the parapet wall structural beam 8 and the thermal insulation layer 7. An outer parapet wall insulation layer 6 is laid on the outer side of the parapet wall structural beam 8 and the thermal insulation layer 7. The main building floor slab 2 and the main building edge beam 5 are completely wrapped by the roof insulation layer 3, the inner parapet wall insulation layer 4, the thermal insulation layer 7, and the outer parapet wall insulation layer 6, forming a continuous closed thermal shell, which effectively ensures the thermal insulation performance of the building structure.

[0038] In the above scheme, the roof insulation layer 3 and the inner insulation layer 4 of the parapet wall are made of XPS insulation board, graphite polystyrene board or sprayed polyurethane rigid foam insulation material; the outer insulation layer 6 of the parapet wall is made of rock wool board, rock wool strip, XPS insulation board, graphite polystyrene board, thermosetting EPS board or vacuum insulation board.

[0039] Furthermore, the parapet structural beam 8 is fixedly connected to the main keel 11 of the decorative curtain wall via a thermal break support 10; the main keel 11 of the decorative curtain wall is also fixedly connected to the side beam 5 of the main building structure. A secondary keel 12 of the decorative curtain wall is provided on the outside of the main keel 11 of the decorative curtain wall; a decorative curtain wall panel 13 is fixedly installed on the outside of the secondary keel 12 of the decorative curtain wall.

[0040] Since the factors affecting thermal bridges mainly manifest in two aspects—one being the length of the linear thermal bridge, with a longer length resulting in a larger influence range; and the other being the linear heat transfer coefficient, with a higher coefficient leading to a more pronounced thermal bridge effect—this invention reduces the thermal bridge effect by weakening these two factors.

[0041] Regarding the linear thermal bridge length, this invention adopts a point-to-line approach, adjusting the parapet wall (continuous reinforced concrete slab) of the fully cast-in-place reinforced concrete system into a system of parapet wall structural columns 9 of a concrete frame and a thermal insulation layer 7. The parapet wall is designed as several reinforced concrete parapet wall structural columns 9 and transversely tied reinforced concrete parapet wall structural beams 8, so that the actual structural connection area between the parapet wall and the roof is only the connection range between the parapet wall structural columns 9 and the main roof slab 2 and the main edge beams 5. This range is the thermal bridge range, thus greatly reducing the total length of the thermal bridge.

[0042] Regarding the linear thermal bridge heat transfer coefficient, a method of minimizing its large value is adopted. In the non-structural tie area, an optimized material method is used, and a thermal insulation layer 7 with a lower thermal conductivity is filled between the main building edge beam 5 and the parapet wall structural beam 8 to reduce the linear heat transfer coefficient.

[0043] During implementation, firstly, structural safety is ensured at the design level. The structural engineers design the parapet beams 8 and columns 9 according to the architectural plan, fully considering structural safety. The spacing of the parapet columns 9 generally follows the same pattern as the main building structure. While ensuring the strength of the overall frame structure system, sufficient space is ensured between the parapet beams 8 and the main building edge beams 5 for filling with a low thermal conductivity thermal insulation layer 7, with a height of ≥300mm. Secondly, energy efficiency is ensured. The heat transfer coefficient of the nodal line is analyzed through simulation calculations, and the minimum thermal conductivity limit of the thermal insulation layer 7 is determined through further detailed design. Finally, feasibility is ensured at the architectural design level, with the architectural engineers selecting infill materials suitable for the project type.

[0044] The selection principles for thermal insulation layer materials are as follows: 1. Low thermal conductivity: Materials with low thermal conductivity should be selected to effectively block heat transfer in non-structural bonding areas during heat transfer; 2. Material reliability: The filling materials used in the roof need to meet basic waterproofing and durability requirements, and their service life should be compatible with the main building structure; 3. Material economy: The filling materials should be economical, widely available, have a mature market, high performance assurance rate, and guaranteed supply cycle; 4. Convenience of construction and installation: The construction and installation of the filling materials should be simple and easy to carry out, requiring low skill levels from construction personnel, and avoiding the use of special processes or special components.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A building structure with a thermally insulated parapet wall, comprising: Main building and parapet wall; The parapet wall is located around the perimeter of the main roof of the building, characterized in that: The main building structure includes: main building structural beams (1), main building floor slabs (2), and main building edge beams (5); The main building floor slab (2) is set on the main building structural beam (1), and the main building side beam (5) is set on the outside of the main building floor slab (2); The parapet wall includes: a parapet wall structural beam (8), a thermal insulation layer (7), and a parapet wall structural column (9); The parapet wall structural beam (8) is set above the main building side beam (5); the parapet wall structural columns (9) are spaced apart; and the parapet wall structural columns (9) are connected to the parapet wall structural beam (8); the outer sides of the parapet wall structural columns (9) and the parapet wall structural beam (8) are flush. A thermal insulation layer (7) is provided between the main building side beam (5) and the parapet wall structural beam (8); the thermal insulation layer (7) is staggered with the parapet wall structural column (9).

2. The building structure with thermally insulated parapet wall according to claim 1, characterized in that, The heat insulation layer (7) is made of graphite polystyrene board.

3. The building structure with thermally insulated parapet wall according to claim 2, characterized in that, A roof insulation layer (3) is laid on the main floor slab (2) of the building; The inner side insulation layer (4) of the parapet wall is laid on the inner side of the parapet wall structural beam (8) and the thermal insulation layer (7).

4. The building structure with thermally insulated parapet wall according to claim 3, characterized in that, The parapet wall structural beam (8) and the thermal insulation layer (7) are covered with an outer parapet wall insulation layer (6).

5. The building structure with thermally insulated parapet wall according to claim 4, characterized in that, The roof insulation layer (3) and the inner insulation layer (4) of the parapet wall are made of XPS insulation board, graphite polystyrene board or sprayed polyurethane rigid foam insulation material. The outer insulation layer (6) of the parapet wall is made of rock wool board, rock wool strip, XPS insulation board, graphite polystyrene board, thermosetting EPS board or vacuum insulation board.

6. The building structure with thermally insulated parapet wall according to claim 1, characterized in that, The main structural beams (1), main floor slabs (2), and main side beams (5) of the building are all made of reinforced concrete.

7. The building structure with thermally insulated parapet wall according to claim 1, characterized in that, The parapet wall structural beam (8) and parapet wall structural column (9) are made of reinforced concrete.

8. The building structure with thermally insulated parapet wall according to claim 1, characterized in that, The parapet structural beam (8) is fixedly connected to the main keel (11) of the decorative curtain wall through thermal break support (10); The main keel (11) of the decorative curtain wall is also fixedly connected to the side beam (5) of the main building.

9. The building structure with thermally insulated parapet wall according to claim 8, characterized in that, The decorative curtain wall main keel (11) is provided with a decorative curtain wall secondary keel (12) on the outside; The decorative curtain wall panel (13) is fixedly installed on the outside of the secondary keel (12) of the decorative curtain wall.

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