Eave structure of antique-style buildings

Abstract

The present invention relates to an eaves structure of an antique building. A concrete roof slab is cast above a concrete structural beam. A semi-circular purlin is convexly provided at a position near the middle of the cornice under the concrete roof slab. A plurality of concrete precast rafters are fixedly connected at intervals along the length direction of the concrete structural beam under the cornice. The haunch part adopts a thickened structure with a parallelogram cross-section. The haunch part is fixedly connected to the lower surface of the cornice and is fixedly connected between the concrete structural beam and the semi-circular purlin. The concrete roof slab, the semi-circular purlin and the haunch part are integrally cast structures, and the roots of the rafters are buried in the haunch part; in the present invention, the haunch part, the concrete roof slab and the semi-circular purlin are cast and formed together, with fewer construction processes, shorter construction period and lower cost; the roots of the rafters are wrapped by the haunch part, and the haunch part has better effects on fixedly connecting the rafters and supporting the cornice.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial building construction, and in particular relates to an antique building eaves structure. Background Art

[0002] With the continuous exploration and research of historical culture, antique buildings, as a continuation of humanities, are appearing more and more in life; traditional ancient buildings are usually built with wooden structures, and in order to pursue the beauty of classical architecture in the modern construction industry, reinforced concrete structures are generally used to construct buildings that meet the mechanical strength requirements and have the characteristics of traditional classical architecture. Reinforced concrete antique building eaves are one of the common antique building structures.

[0003] The eaves, also known as the roof eaves, are the junction of the roof and the outer wall. Their function is to drain rainwater from the roof and protect the wall. In ancient buildings, the upper end of the eaves column supports the roof panel through beams, brackets, arch panels and round purlins from bottom to top. The part of the roof panel extending out of the outer wall is called the overhanging eaves. Under the overhanging eaves, there are usually several rafters extending outward along the roof panel to strengthen the support of the overhanging eaves. In order to improve the mechanical strength of the building in antique buildings, see the attached Figure 1 The reinforced concrete structure of the antique building eaves shown in the figure, at present, the antique building eaves generally use concrete structural beams 8 instead of wooden beams, and then set a steel mesh structure based on the concrete structural beams 8, and form a concrete roof panel 1 by pouring. A semicircular purlin 3 is also protruded below the concrete roof panel 1 near the middle of the cantilevered eaves. The semicircular purlin 3 is used to replace the round purlin and has a decorative and hanging function. The sealing arch plate (not shown in the figure), the bracket (not shown in the figure) and the rafter 2 are all prefabricated with concrete, wherein the prefabricated concrete sealing arch plate is arranged below the semicircular purlin 3 and is fixedly connected to the concrete structural beam 8 to facilitate the hanging of the bracket; The precast concrete brackets serve as decoration. During installation, multiple brackets are fixedly connected to the outside of the concrete structural beam 8 at intervals and are located below the arch cover plate. The brackets are fixedly connected to the concrete structural beam 8 and the arch cover plate respectively. The precast concrete rafters 2 are fixedly connected to the bottom of the cantilevered eaves. Then, separate formwork and casting are carried out on both sides of the rafters 2 near the concrete structural beam 8 to form a right-angled triangular column-shaped armpit part 4. The hypotenuse of the armpit part 4 is fixedly connected to the cantilevered eaves, and a straight side of the armpit part 4 is fixedly connected to the concrete structural beam 8. The two sides of the armpit part 4 are respectively fixedly connected to the corresponding two rafters 2, so that the rafters 2 and the concrete structural beam 8 are connected as a whole to provide support for the cantilevered eaves.

[0004] In the cornice of the above-mentioned antique-style building, the haunch part is relatively weak, not only having a poor effect on the fixed connection of the purlins, but also having a relatively limited supporting force for the cornice. The arch closure plate is in a cantilever arrangement state. Since the bracket and the arch closure plate are made of precast concrete, after a long time, the arch closure plate is prone to deformation and cracking; at the same time, the haunch part needs to be separately formwork-poured between the precast purlins; it can be seen that the current cornice of the antique-style building not only has complex construction, but also has poor structural strength, posing certain potential safety hazards. Summary of the Invention

[0005] Aiming at the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a cornice structure for antique-style buildings, avoiding the problem of poor structural strength of the cornice structure caused by the relatively weak haunch part, and achieving better effects on the fixed connection of the purlins and the supporting strength of the cornice.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The cornice structure of the antique-style building includes a concrete structural beam. A concrete roof slab is poured above the concrete structural beam. The part where the concrete roof slab extends out of the concrete structural beam forms a cornice. A panel steel reinforcement cage is embedded in the concrete roof slab; a semi-circular purlin is convexly provided at a position close to the middle of the cornice below the concrete roof slab. A semi-circular purlin steel reinforcement cage is connected to the panel steel reinforcement cage, and the semi-circular purlin steel reinforcement cage is correspondingly embedded in the semi-circular purlin. A plurality of precast concrete purlins are fixedly connected at intervals along the length direction of the concrete structural beam below the cornice. The roots of the purlins are fixedly connected to the concrete structural beam and the cornice respectively through haunch parts. The haunch part adopts a thickened structure with a parallelogram cross-section. The haunch part is fixedly connected to the lower surface of the cornice and is fixedly connected between the concrete structural beam and the semi-circular purlin;

[0008] A haunch steel reinforcement cage is embedded in the haunch part. The haunch steel reinforcement cage is connected to the steel bars embedded in the panel steel reinforcement cage or the concrete structural beam. The concrete roof slab, the semi-circular purlin and the haunch part are of an integral pouring structure, and the roots of the purlins are embedded in the haunch part;

[0009] A plurality of wooden brackets are provided at intervals along the length direction of the concrete structural beam below the semi-circular purlin. The brackets are fixedly connected to the semi-circular purlin and the concrete structural beam respectively through a plurality of fasteners; an arch closure plate is provided between the bracket and the semi-circular purlin, and the arch closure plate is fixedly connected to the concrete structural beam.

[0010] In the present invention, the haunched part, the concrete roof slab and the semi-circular purlin are cast-in-place together, formed in one time, reducing the construction procedures, shortening the construction period and lowering the construction cost; the haunched part adopts a thickened structure with a parallelogram cross-section and extends to the semi-circular purlin, so that the haunched part has a better supporting effect on the cornice, and the haunched part completely wraps the root of the rafter, with a better fixing effect on the rafter, facilitating the formation of an effective support for the cornice; compared with the triangular-column-shaped haunched part currently used for the eaves of antique-style buildings in the background art, the haunched part adopted in the present invention has a better effect on rafter connection and cornice support.

[0011] In the present invention, wooden brackets are adopted. Compared with precast concrete brackets, the wooden brackets are lighter in weight and are more convenient to be stably connected to the concrete structural beam; and expansion bolts are used to penetrate through the arch-covering board to directly connect the wooden brackets to the semi-circular purlin, so that the arch-covering board is not affected by the gravity of the brackets; at the same time, compared with precast concrete brackets, the wooden brackets are not easy to break, are convenient for transportation, have a better reduction effect on ancient buildings, and even if they fall off, the resulting damage is smaller and the safety is higher.

[0012] Further, the fastener is an expansion bolt, and the bracket is fixedly connected to the semi-circular purlin through the expansion bolt vertically penetrating the arch-covering board, and the bracket is fixedly connected to the concrete structural beam through the horizontal expansion bolt.

[0013] In this way, it is convenient for the bracket to be fixedly connected to the semi-circular purlin and the concrete structural beam.

[0014] Further, the arch-covering board is an extruded polystyrene board, and the arch-covering board is fixedly connected to the concrete structural beam.

[0015] In this way, since the bracket adopts a wooden structure and is directly connected to the semi-circular purlin, the bracket no longer needs to be suspended by the arch-covering board, and the arch-covering board only plays a decorative role. Therefore, the precast concrete arch-covering board is changed to an extruded polystyrene board, reducing the precast concrete components, making the construction simpler and the cost lower.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the haunched part, the concrete roof slab and the semi-circular purlin are cast-in-place together, formed in one time, reducing the construction procedures, shortening the construction period and lowering the construction cost; the haunched part extends to the semi-circular purlin in a rectangular shape and is fixedly connected thereto, and the root of the rafter is wrapped by the haunched part, having a better effect on rafter connection and cornice support.

[0018] 2. In the present invention, the bracket adopts a wooden structure, has a lighter self-weight, is fixed on the semi-circular purlin and the main concrete beam through expansion bolts, and no longer needs to be fixed through the arch-covering board. The arch-covering board and the cornice are less stressed, and the possibility of cracking is lower, with better safety.

[0019] 3. In the present invention, the arch closure plate only serves a decorative purpose. By changing the precast concrete arch closure plate to an extruded polystyrene board, the number of precast concrete components is reduced, the construction is simpler, and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the reinforced concrete structure of the cornice of the antique building described in the background art;

[0021] Figure 2 is an effect diagram of the cornice structure of the antique building in the embodiment;

[0022] Figure 3 is a schematic diagram of the layout of the expansion bolts on the bracket in the embodiment;

[0023] Figure 4 is a schematic diagram of the reinforced concrete structure of the cornice structure of the antique building in the embodiment;

[0024] Among them, the concrete roof slab 1, the rafter 2, the semi-circular purlin 3, the haunch part 4, the arch closure plate 5, the expansion bolt 6, the bracket 7, and the concrete structural beam 8. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further details the specific embodiments of the present invention in conjunction with the drawings.

[0026] Embodiment:

[0027] Please refer to Figure 2 and Figure 4 , the cornice structure of the antique building includes a concrete structural beam 8. A concrete roof slab 1 is cast above the concrete structural beam 8. The part of the concrete roof slab 1 extending out of the concrete structural beam 8 forms a cornice. A panel steel reinforcement cage is embedded in the concrete roof slab 1; a semi-circular purlin 3 is convexly provided at a position close to the middle of the cornice below the concrete roof slab 1. A semi-circular purlin steel reinforcement cage is connected to the panel steel reinforcement cage, and the semi-circular purlin steel reinforcement cage is correspondingly embedded in the semi-circular purlin 3; that is, a convex part with a semi-circular end surface is cast below the cornice through the semi-circular purlin steel reinforcement cage, and the convex part with the semi-circular end surface is the semi-circular purlin 3, which is used to act as the round purlin in the ancient building and can play a role in decoration and beautification.

[0028] A number of precast concrete rafters 2 are fixedly connected at intervals along the length direction of the concrete structural beam 8 below the cornice. The roots of the rafters 2 are fixedly connected to the concrete structural beam 8 and the cornice respectively through the haunch parts 4.

[0029] The haunched part 4 adopts a thickened structure with a parallelogram cross-section. The haunched part 4 is fixedly connected to the lower surface of the cornice and is also fixedly connected between the concrete structural beam 8 and the semi-circular purlin 3. A haunched steel reinforcement cage is embedded in the haunched part 4, and the haunched steel reinforcement cage is connected to the steel reinforcement embedded in the panel steel reinforcement cage or the concrete structural beam 8. The concrete roof panel 1, the semi-circular purlin 3 and the haunched part 4 are of an integral cast structure, and the root of the rafter 2 is embedded in the haunched part 4.

[0030] A plurality of wooden bracket sets 7 are arranged at intervals along the length direction of the concrete structural beam 8 below the semi-circular purlin 3. The bracket sets 7 are fixedly connected to the semi-circular purlin 3 and the concrete structural beam 8 respectively through a plurality of fasteners. A sealing arch plate 5 is arranged between the bracket set 7 and the semi-circular purlin 3. The sealing arch plate 5 is an extruded polystyrene board, and the sealing arch plate 5 is fixedly connected to the concrete structural beam 8.

[0031] Please refer to Figure 3 , the fastener is an expansion bolt 6. The bracket set 7 is fixedly connected to the semi-circular purlin 3 through the expansion bolt 6 vertically penetrating the sealing arch plate 5, and the bracket set 7 is fixedly connected to the concrete structural beam 8 through the horizontal expansion bolt 6. The bracket set 7 and the sealing arch plate 5 can also be fixedly connected to the semi-circular purlin 3 and the concrete structural beam 8 in other ways, such as bonding, without specific limitation.

[0032] Please refer to Figure 4 , during implementation, the steel reinforcement can be arranged according to Figure 4 . The concrete roof panel 1, the semi-circular purlin 3 and the haunched part 4 are cast in situ together, formed at one time. The root of the rafter 2 is pre-embedded in the cast-in-place structure, which increases the stability of the eaves structure, reduces the construction procedures, shortens the construction period and saves costs.

[0033] Through the application of the present invention, on the premise of ensuring the safety of the concrete structure, haunching is carried out at the root of the cornice, which can be cast in situ together with the roof panel, formed at one time, reducing the on-site construction procedures, shortening the construction period and reducing the construction cost; the sealing arch plate 5 adopts an extruded polystyrene board, reducing the construction cost; the bracket set 7 adopts a wooden structure, reducing the self-weight of the bracket set 7, being firmly fixed, convenient for construction and achieving a decorative effect.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. The cornice structure of an antique-style building, including a concrete structural beam, a concrete roof slab is cast above the concrete structural beam, the part of the concrete roof slab extending out of the concrete structural beam forms a cornice, and a panel steel reinforcement cage is embedded in the concrete roof slab; a semi-circular purlin is convexly provided at a position near the middle of the cornice under the concrete roof slab, a semi-circular purlin steel reinforcement cage is connected to the panel steel reinforcement cage, and the semi-circular purlin steel reinforcement cage is correspondingly embedded in the semi-circular purlin. A number of concrete precast rafters are fixedly connected at intervals along the length direction of the concrete structural beam under the cornice, and the roots of the rafters are fixedly connected to the concrete structural beam and the cornice respectively through haunch parts, and the characteristics are as follows: The haunch part adopts a thickened structure with a parallelogram cross-section, and the haunch part is fixedly connected to the lower surface of the cantilever eaves and is fixedly connected between the concrete structural beam and the semi-circular purlin; A plurality of wooden bracket sets are arranged at intervals along the length direction of the concrete structural beam below the semi-circular purlin, and the bracket sets are fixedly connected to the semi-circular purlin and the concrete structural beam respectively through a plurality of fasteners; A haunch steel reinforcement cage is embedded in the haunch part, and the haunch steel reinforcement cage is connected to the steel reinforcement embedded in the panel steel reinforcement cage or the concrete structural beam; The concrete roof slab, the semi-circular purlin and the haunch part are an integrally cast structure, and the root of the rafter is embedded in the haunch part; A sealing arch plate is arranged between the bracket set and the semi-circular purlin, the sealing arch plate is an extruded polystyrene board, and the sealing arch plate is fixedly connected to the concrete structural beam.

2. The cornice structure of an antique-style building according to claim 1, and the characteristics are as follows: The fastener is an expansion bolt, and the bracket set is fixedly connected to the semi-circular purlin through the expansion bolt vertically penetrating the sealing arch plate, and the bracket set is fixedly connected to the concrete structural beam through the horizontal expansion bolt.

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