A fireproofing system for structural frames of timber buildings

Abstract

The utility model belongs to the wood structure building fire prevention technical field relates to a kind of fireproof construction system of wood structure building structure frame, it includes the wooden crossbeam (1) of structure frame, the top surface of wooden crossbeam (1) is provided with the recess (2) of length and is equipped with water delivery pipeline (3) in the recess (2) of length, multiple spray heads (4) are equipped on water delivery pipeline (3) and are spaced, the front and back side and the bottom surface of wooden crossbeam (1) are equipped with multiple drainage recesses (5) corresponding with multiple spray heads (4) one to one, the junction of the top surface and the front and back side of wooden crossbeam (1) is equipped with first inclined plane (6) and the junction of the bottom surface and the front and back side of wooden crossbeam (1) is equipped with second inclined plane (7), the outer surface of wooden crossbeam (1) is all equipped with flow guide structure (8).It can use very small water volume to extend the fire resistance limit of wood structure load-bearing component, to improve the safety of heavy wood frame structure building with low-cost strategy.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection technology for wooden structures, and relates to a fire-resistant construction system, particularly a fire-resistant construction system for a wooden structure frame. Background Technology

[0002] Timber-structured buildings have received increasing attention in recent years. Compared to other countries, the application of timber-structured buildings in China started relatively late. Under the green development strategy goals of "carbon peaking" and "carbon neutrality," there are still many bottlenecks to overcome in achieving the widespread application and sustainable development of timber-structured buildings. One of the main problems is the fire protection design of timber-structured buildings.

[0003] Compared to other structural materials, wood has poor fire resistance and burns relatively quickly, releasing a large amount of heat and smoke during a fire. Due to the characteristics of building design and construction, the connections and fixation between timbers are often quite tight, which to some extent makes it easy for fire to spread rapidly in a short period of time. Existing fire prevention measures for timber structures include: 1. Using automatic fire extinguishing systems to automatically detect, control, and extinguish fires, including automatic sprinkler systems, automatic gas extinguishing systems, and automatic dry powder extinguishing systems; 2. Utilizing the carbonization effect to form a carbonized layer on the surface of large-section engineered wood, slowing down the burning rate of the wood inside; 3. Performing flame-retardant treatment on the wood, including impregnation with solvent-based flame retardants and applying fire-retardant coatings to the wood structure; 4. Adopting structural fire-resistant design methods, using fire-resistant materials (such as fire-resistant gypsum board) to cover flammable parts of the building to form fire-resistant partitions.

[0004] However, existing fireproofing methods still have certain shortcomings, such as the limited lifespan of fire-retardant coatings, inadequate fire protection facilities, and the incompatibility of active fire protection measures with the characteristics and needs of timber-framed buildings. This is especially true for large-span timber-framed structures, where the timber beams are located at the highest point of the building, and fire-resistant structures such as sprinkler systems are generally below the bottom of the beams, failing to provide direct protection for the load-bearing timber beams. Adding additional fire-retardant layers such as gypsum board alters the texture of the wood and occupies significant space, resulting in material waste. The carbonization effect has limited effectiveness in slowing the internal combustion rate of the wood. Surface coatings with flame retardants alter the color and texture of the wood surface.

[0005] Therefore, in order to address the shortcomings of the existing technologies, it is necessary to develop a new type of fire-resistant structural system for timber building frames. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model proposes a fireproof construction system for the structural frame of a timber building, which can extend the fire resistance limit of the load-bearing components of the timber structure with a very small amount of water, thereby improving the safety of heavy timber frame structure buildings with a low-cost strategy.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A fireproof construction system for a wooden building frame includes wooden beams of the frame. The system is characterized by a continuous groove on the top surface of each wooden beam, within which a water pipe is installed. Multiple nozzles are spaced apart on the water pipe. Multiple drainage grooves, corresponding one-to-one with the nozzles, are provided on the front, rear, and bottom surfaces of the wooden beam. A first inclined surface is provided at the junction of the top and front / rear surfaces of the wooden beam, and a second inclined surface is provided at the junction of the bottom and front / rear surfaces of the wooden beam. A flow-guiding structure is provided on the outer surface of each wooden beam to allow water sprayed from the nozzles to form a protective water film on the wooden beam.

[0009] Preferably, a continuous groove is provided on the front and rear sides of the top surface of the wooden beam, and a water supply pipe is provided in each continuous groove.

[0010] Preferably, the nozzle is a turbulent drip nozzle.

[0011] Preferably, the nozzle is a rotatable 8-hole turbulent flow dripper.

[0012] Preferably, the flow guiding structure is a surface groove, texture, or water-repellent structure.

[0013] Preferably, a nozzle is provided on the water supply pipeline at 1000mm intervals, and the flow rate of the nozzle is 90-100L / h.

[0014] Preferably, the drainage groove has a width of 50mm and a depth of 50mm.

[0015] Preferably, the diameter of the water supply pipe is 80-120mm.

[0016] Compared with the prior art, the fireproof construction system of the wooden building frame of this utility model has one or more of the following beneficial technical effects:

[0017] 1. The fireproof construction system of the wooden building frame of this utility model can extend the fire resistance limit of the load-bearing wooden structure components with a very small amount of water, thereby improving the safety of heavy timber frame structure buildings with a low-cost strategy.

[0018] 2. This utility model can effectively improve the fire resistance of load-bearing components of wooden structures and delay the collapse of the main structure of a wooden structure after being exposed to fire.

[0019] 3. In this utility model, since the wood has stronger water wettability after carbonization, a carbonized protective layer can be formed on the surface of the wood structure, which has a significant strengthening effect.

[0020] 4. Compared with sprinkler fire suppression, the fireproof construction system of the wooden building frame of this utility model uses less water and has better economic benefits.

[0021] 5. The fire-resistant structural system of the wooden building frame of this utility model can be used in combination with other fire-resistant structural design strategies of wooden buildings, such as automatic sprinkler fire protection systems, to improve the fire resistance of the entire wooden building. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall layout of the fireproof construction system for the wooden structure frame of this utility model.

[0023] Figure 2 This is a schematic diagram of the wooden crossbeams of the fireproof structural system for the wooden building frame of this utility model.

[0024] Figure 3 This is a front view schematic diagram of the wooden crossbeams of the fireproof structural system of the wooden building frame of this utility model.

[0025] Figure 4 This is a longitudinal sectional view of the wooden beams of the fireproof structural system of the wooden building frame of this utility model.

[0026] Figure 5 This is a transverse sectional view of the wooden beams of the fireproof structural system of the wooden building frame of this utility model. Detailed Implementation

[0027] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0028] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0029] To address the current challenges in fire prevention for timber-framed buildings, this utility model provides a fire-resistant structural system for timber-framed building frames. Its purpose is to improve the fire resistance limit of load-bearing components in timber-framed buildings, addressing the issue that existing fire prevention technologies cannot adequately fire-resistant the load-bearing structural frames of timber-framed buildings, given that timber is a combustible material.

[0030] like Figure 1-5 As shown, the fire-resistant structural system of the wooden building frame of this utility model includes wooden beams 1 of the structural frame. Floor slabs can be installed on the wooden beams 1, and the wooden beams 1 provide support for the floor slabs.

[0031] Since the wooden beam 1 is located at the highest point of the entire wooden structure, existing fire-fighting structures such as ordinary sprinkler systems are below the bottom surface of the wooden beam 1 and cannot directly protect the load-bearing wooden beam 1. Therefore, in this invention, a continuous groove 2 is provided on the top surface of the wooden beam 1. The continuous groove 2 extends along the entire length of the wooden beam 1, and a water supply pipe 3 is installed within the continuous groove 2. Multiple nozzles 4 are spaced apart on the water supply pipe 3. The water supply pipe 3 is connected to a water source to supply water to the nozzles 4, thereby facilitating the spraying of water outwards through the nozzles 4 for fire prevention.

[0032] Wherein, if the cross-section of the elongated groove 2 is circular, its diameter is slightly larger than the diameter of the water supply pipe 3, for example, 1 mm larger. If the cross-section of the elongated groove 2 is square, its side length is slightly larger than the diameter of the water supply pipe 3, for example, 1 mm larger. Therefore, even if the water supply pipe 3 is installed and fixed, it will not have a significant adverse impact on the structure and strength of the wooden beam 1.

[0033] Preferably, a continuous groove 2 is provided on the front and rear sides of the top surface of the wooden beam 1, and a water supply pipe 3 is provided in each continuous groove 2. This allows the water sprayed from the nozzle 4 to flow downwards simultaneously from the front and rear sides of the wooden beam 1, thereby improving the fireproof effect.

[0034] More preferably, the nozzle 4 is a turbulent flow dripper. Even more preferably, the nozzle 4 is a rotatable 8-hole turbulent flow dripper. This allows the nozzle 4 to spray water more evenly onto the surface of the wooden beam 1, thereby improving the fire-resistant effect.

[0035] Most preferably, a nozzle 4 is provided on the water supply pipe 3 at 1000mm intervals, and the flow rate of the nozzle 4 is 90-100L / h. This ensures that the nozzle 4 can spray a sufficient amount of water to guarantee the fire prevention effect.

[0036] Furthermore, preferably, the diameter of the water supply pipe 3 is 80-120mm. This ensures that it can meet the water spraying requirements of the nozzle 4.

[0037] The wooden beam 1 has multiple drainage grooves 5 on its front and rear sides and bottom surface, corresponding one-to-one with the multiple nozzles 4. This ensures that in the early stages of a fire, the water sprayed from the nozzles 4 can completely wet the wooden beam 1 through the drainage grooves 5 in the shortest possible time, achieving a flame-retardant effect.

[0038] Preferably, the drainage groove 5 has a width of 50mm and a depth of 50mm. This allows for rapid drainage and wetting of the wooden beam 1 while having minimal impact on its structural strength.

[0039] A first inclined surface 6 is provided at the junction of the top surface and the front and rear sides of the wooden beam 1. This allows the water sprayed from the nozzle 4 to flow quickly through the first inclined surface 6 to the front and rear sides of the wooden beam 1, thereby improving the fireproof effect.

[0040] A second inclined surface 7 is provided at the junction of the bottom surface and the front and rear sides of the wooden beam 1. This ensures that water on the front and rear sides can flow quickly from the front and rear sides of the wooden beam 1 to the bottom surface of the wooden beam 1 through the second inclined surface 7, thereby improving the fireproof effect.

[0041] The outer surface of the wooden beam 1 is provided with a flow guiding structure 8, such as surface grooves, textures or water-repellent features, which helps the water flow to quickly cover the surface of the wooden beam 1 and form a protective water film.

[0042] This invention discloses a fire-resistant structural system for timber building frames that extends the fire resistance of load-bearing timber components with a very small amount of water, thereby improving the safety of heavy timber frame structures at a low cost. Furthermore, because carbonized wood has stronger water wettability, water spraying can form a carbonized protective layer on the surface of the timber structure, significantly enhancing its structural integrity. Therefore, this fire-resistant structural system for timber building frames is particularly suitable for fire protection design of heavy timber structures, such as CLT (cross-laminated timber).

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit the scope of protection of this utility model. Those skilled in the art can modify or make equivalent substitutions to the technical solution of this utility model based on the concept of this utility model, without departing from the essence and scope of the technical solution of this utility model.

Claims

1. A fire-resistant structural system for a timber-framed building, comprising timber beams (1) of the structural frame, characterized in that, The top surface of the wooden beam (1) is provided with a continuous groove (2) and a water supply pipe (3) is provided in the continuous groove (2). Multiple nozzles (4) are provided at intervals on the water supply pipe (3). Multiple drainage grooves (5) are provided on the front and rear sides and bottom surface of the wooden beam (1) in correspondence with the multiple nozzles (4). A first inclined surface (6) is provided at the junction of the top surface and the front and rear sides of the wooden beam (1) and a second inclined surface (7) is provided at the junction of the bottom surface and the front and rear sides of the wooden beam (1). A flow guiding structure (8) is provided on the outer surface of the wooden beam (1) so that the water sprayed by the nozzles (4) can form a protective water film on the wooden beam (1).

2. The fire-resistant structural system for a timber building frame according to claim 1, characterized in that, The wooden beam (1) has a continuous groove (2) on the front and back sides of its top surface, and each continuous groove (2) contains a water pipe (3).

3. The fire-resistant structural system for a timber building frame according to claim 2, characterized in that, The nozzle (4) is a turbulent drip nozzle.

4. The fire-resistant structural system for a timber building frame according to claim 3, characterized in that, The nozzle (4) is a rotatable 8-hole turbulent flow dripper.

5. The fire-resistant structural system for a timber building frame according to claim 4, characterized in that, The flow guiding structure (8) is a vertical groove or texture.

6. The fire-resistant structural system for a timber building frame according to any one of claims 1-5, characterized in that, The water supply pipe (3) is provided with a nozzle (4) every 1000mm, and the flow rate of the nozzle (4) is 90-100L / h.

7. The fire-resistant structural system for a timber building frame according to claim 6, characterized in that, The drainage groove (5) has a width of 50mm and a depth of 50mm.

8. The fire-resistant structural system for a timber building frame according to claim 7, characterized in that, The diameter of the water supply pipe (3) is 80-120mm.

Images