Roof truss protecting and repairing method without falling

Abstract

The invention discloses a roof truss protecting and repairing method without falling, and relates to the technical field of constructional engineering, and the method specifically comprises the following steps: S0, surveying, detecting, evaluating, identifying, forming a report, and guiding the design work; the method comprises the steps that S1, a ridge, tiles, waterproof components, roof battens, counter battens and asphalt felts of a building are sequentially dismantled till a roof base layer of the building is dismantled; s2, a wooden roof frame of a roof base layer is repaired; s3, after repairing is completed, a keel frame is installed on the wooden roof frame; s4, a bearing net is installed, stringers are arranged and fixed, and rock wool is filled; s5, a wooden roof boarding is laid on the stringer, and anti-corrosion paint is brushed on the wooden roof boarding; s6, waterproof coiled materials are laid and pasted on the wood balusters; s7, wood counter battens are installed, and then wood roof battens are installed; s8, roof tiles and a ridge are laid; s9, a lightning rod and a lightning strip are installed, then a downpipe is arranged, and a decoration panel is installed; and S10, after repairing is completed, detection is carried out, and finally subsection acceptance check is carried out. The technical problems that stability, waterproof performance and heat preservation and heat insulation performance are not enough in the updating and reconstruction process of an existing brick-wood structure house are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a method for protecting and repairing a non-falling roof truss. Background Art

[0002] In the field of architecture, brick-wood houses have unique historical and cultural values ​​and architectural styles. However, as time goes by and usage needs change, such houses often face problems such as aging structures and outdated functions.

[0003] Traditional renovation methods often have many limitations when dealing with these problems, such as significant damage to the stability of the original structure, difficulty in effectively improving the thermal insulation and waterproofing performance of the house, and complex and inefficient construction processes. Therefore, there is an urgent need for an innovative brick-wood structure and renovation method for houses to achieve efficient and scientific renovation of brick-wood structure houses, so that they can meet the requirements of modern life and use while retaining their original characteristics. Summary of the invention The purpose of the present invention is to provide a method for protecting and repairing a roof truss without falling off, which solves the technical problems of insufficient stability, waterproof performance and thermal insulation performance in the renovation process of brick-wood structure houses in the prior art.

[0004] The present application discloses a method for protecting and repairing a non-falling roof truss, comprising the following steps: S1: Remove the ridge, bricks and tiles, waterproof components, tile hanging strips, water-proof strips and asphalt felt of the building in sequence until the roof base of the building is reached; S2: Repair the wooden trusses at the base of the roof; S3: After the repair is completed, a keel frame is installed on the wooden roof frame; S4: Install the supporting net and set fixed beams, and fill rock wool between the beams as insulation boards; S5: laying wooden lookout boards on the beams, and applying anti-corrosion paint on the wooden lookout boards; S6: Laying a double layer of SBS modified asphalt waterproofing membrane on the wooden slab; S7: installing wooden water-following strips, which are arranged along the water flow direction, and then installing wooden tile hanging strips, which are arranged horizontally and perpendicular to the water flow direction; S8: Lay roof tiles and ridges, fix the eaves with seals, and perform anti-corrosion treatment; S9: Install lightning rods and lightning strips, then set up downpipes and install decorative panels; S10: After the repair is completed, an inspection is carried out to ensure that the repair is complete, solid and leak-free, and finally a partial acceptance is carried out.

[0005] This application can achieve roof repairs and, through reasonable design and construction processes, achieve precise reinforcement of the house structure, functional improvements, and performance optimization, ensuring that the renovated house has both good structural safety and a comfortable user experience.

[0006] Based on the above technical solution, the embodiment of the present application can also be improved as follows: Furthermore, before performing step S1, the following steps are also included: S0: investigation, testing, evaluation, identification, forming a report, and guiding the design work.

[0007] Furthermore, the following steps are included between step S0 and step S1: A full-height support frame is built in the building, the load of the wooden roof truss is measured and calculated, and a plurality of vertical poles are installed on the full-height support frame, and the roof support of the building is completed through the vertical poles, and the south, west and north walls are demolished, and new south, west and north walls are built, and the east wall is reinforced at the same time; There are at least six vertical poles, and the vertical poles are symmetrically spaced; When the vertical poles support the roof of the building, the order of first the two sides and then the middle is adopted, and the jacking is symmetrical to ensure that the frame is stable and the jacking height is not more than 15mm. The beneficial effect of this step is that the stability of the wooden roof frame can be guaranteed by controlling the order of the vertical poles.

[0008] Furthermore, step S2 includes the following contents: The working condition of the entire roof truss is analyzed through finite element software analysis, and the strength of the components is tested with a needle resistance meter. Components that do not meet the strength requirements are replaced. The beneficial effect of this step is that components in poor condition can be directly replaced to ensure the structural stability of the wooden roof truss.

[0009] Furthermore, the step S2 also includes the following contents: When cracks exist on the surface of wooden components of wooden roof trusses: the width of the crack is L. When L≤3mm, epoxy resin is used to fill the cracks tightly; when 3mm<L<30mm, wood chips are used for patching, and then epoxy resin glue is used for bonding, and steel hoops are provided on the outside of the cracks for reinforcement; when L≥30mm, new wooden components are made to replace old components.

[0010] When there is decay on the surface of the wooden component of the wooden roof truss: the diameter of the wooden component is D, the outer surface area is S, the decay depth is d, and the decay area is s. If d≥1 / 5D or s≥1 / 2S, a new wooden component is made to replace the old component; otherwise, the decayed part is removed. The beneficial effect of this step is to process different states of the wooden roof truss separately.

[0011] Furthermore, the step S9 also includes the following contents: Steel tie rod vertical supports are added in all other bays according to the original vertical support positions, and are connected to the original roof trusses through steel plate hoops so as to directly disperse the force to the adjacent roof trusses. The beneficial effect of this step is that the overall wooden roof trusses are strengthened by designing the wooden roof trusses. Furthermore, the thickness of the rock wool in step S4 is at least 160 mm, and the thickness of the wooden board in step S5 is at least 30 mm. The beneficial effect of adopting this step is that the thermal insulation performance of the roof can be improved and the indoor energy consumption can be reduced through the rock wool of a certain thickness.

[0012] Furthermore, the thickness of the waterproof coiled material in step S6 is at least 6 mm. The beneficial effect of adopting this step is that the wooden board of a certain thickness can play the role of sealing, heat preservation and protection of the internal structure.

[0013] Furthermore, in step S7, the thickness of the wooden water-repellent strip is at least 30 mm, and the thickness of the wooden tile-hanging strip is at least 30 mm. The beneficial effect of adopting this step is that it can ensure that the roof has good waterproof performance and effectively prevent rainwater leakage.

[0014] Furthermore, the step S10 also includes the following contents: The pole unloading operation is performed so that the weight of the wooden roof frame is transferred to the wall to bear the weight, and the repair work is completed.

[0015] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. This application adopts a combination of non-removal and repair methods, which can not only preserve the structural integrity of the original wooden roof frame to the greatest extent, but also effectively repair its damaged parts and enhance the structural stability.

[0016] 2. In the construction phase of the roof system, this application constructs a roof system with excellent performance, from the setting of the supporting net to the orderly laying and installation of each layer of materials, which significantly improves the thermal insulation, waterproofing and decorative effects of the roof.

[0017] 3. This application rationally plans the layout of the full-floor support frame and vertical poles, and performs scientific operations at key construction nodes, ensuring the safety and reliability of the entire construction process and the reasonable force conversion of the building structure. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic flow chart of a method for protecting and repairing a roof truss without falling off the frame according to a specific embodiment of the present invention; Figure 2 It is a schematic diagram of the jacking process of a non-falling roof truss protection and repair method described in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Example: like Figure 1 As shown, the present application discloses a method for protecting and repairing a non-falling roof truss, which is used to improve the renovation and repair of a brick and wood structure of a house.

[0022] The specific steps of this application are as follows: S1: Remove the ridge, bricks and tiles, waterproof components, tile hanging strips, water-proof strips and asphalt felt of the building in sequence until the roof base of the building is reached; S2: Repair the wooden trusses at the roof base. Specifically, this step includes the following: The working condition of the entire roof truss is analyzed by finite element software, and the strength of the components is tested by a needle resistance instrument. Components that do not meet the strength requirements are replaced. When cracks exist on the surface of wooden components of wooden roof trusses: the width of the crack is L. When L≤3mm, epoxy resin is used to fill the cracks tightly; when 3mm<L<30mm, wood chips are used for patching, and then epoxy resin glue is used for bonding, and steel hoops are provided on the outside of the cracks for reinforcement; when L≥30mm, new wooden components are made to replace old components.

[0023] When the surface of the wooden component of the wooden roof truss is decayed: the diameter of the wooden component is D, the outer surface area is S, the decay depth is d, and the decay area is s. If d ≥ 1 / 5D or s ≥ 1 / 2S, a new wooden component is made to replace the old one; otherwise, the decayed part is removed; S3: After the repair is completed, a keel frame is installed on the wooden roof frame; S4: Install a supporting net, which is used to hold the insulation board and provide stable support for the roof insulation layer; and set fixed trusses, and fill rock wool between the trusses as insulation boards to improve the thermal insulation performance of the roof and reduce indoor energy consumption. The rock wool is yellow rock wool, and the thickness of the rock wool is at least 160mm; S5: Lay wooden lookout boards on the trusses, and apply anti-corrosion paint on the wooden lookout boards, which can play the role of sealing and heat preservation and protecting the internal structure. The thickness of the wooden lookout boards is at least 30mm; S6: Laying a double layer of SBS modified asphalt waterproofing membrane on the wooden slab, the thickness of the waterproofing membrane is at least 6 mm; S7: Install wooden water strips, which are set along the direction of water flow, and then install wooden tile hanging strips, which are set transversely perpendicular to the direction of water flow. The thickness of the wooden water strips is at least 30 mm, and the thickness of the wooden tile hanging strips is at least 30 mm; S8: Lay roof tiles and ridges, fix the eaves with seals, and perform anti-corrosion treatment; S9: Install lightning rods and lightning strips, then set up downpipes and install decorative panels; in order to enhance the overall risk resistance of the wooden roof truss structure, steel tie rod vertical supports are added in all other bays according to the original vertical support positions, and connected to the original roof truss through steel plate hoops, so as to directly disperse the force to the adjacent roof trusses, thereby greatly increasing the safety level of the roof truss system; S10: After the repair is completed, an inspection is carried out to ensure that the repair is complete, firm and leak-free. S11: Perform the pole unloading operation so that the weight of the wooden truss is transferred to the wall to bear the weight, and the repair work is completed. When the wooden truss repair work is successfully completed, and the wall reinforcement work is also successfully completed and meets the strength requirements, the spiral top support unloading operation can be carried out. During the unloading process, it is necessary to pay close attention to the deformation of the truss and the wall to ensure that the weight of the truss can be smoothly and safely transferred to the wall to bear the weight. The unloading work should be carried out step by step and in an orderly manner according to the pre-established plan to avoid structural instability due to excessive unloading speed or improper operation. By accurately controlling the unloading process, the overall stability of the house structure is ensured not to be affected, laying a solid foundation for subsequent use and maintenance, and finally conducting partial acceptance.

[0024] This application also includes step S0: investigation, testing, evaluation, identification, forming a report, and guiding the design work; After performing step S0 and before performing step S1, the present application further includes the following steps: A full-floor support frame is built in the building. When the full-floor support frame is built, the full-floor support frame is spaced apart from the west wall and the east wall. The load of the wooden roof truss is measured and calculated, and a plurality of vertical poles are installed on the full-floor support frame. The roof support of the building is completed by the vertical poles. The south, west and north walls are demolished, and new south, west and north walls are built. At the same time, the east wall is reinforced. In order to ensure accuracy and stability, the vertical poles in this application are at least six, and the vertical poles are arranged symmetrically at intervals, and the interval can be 2400mm. When the vertical poles support the roof of the building, the order of first the two sides and then the middle is adopted, and the jacking is symmetrical to ensure that the frame is stable under force, and the jacking height is not more than 15mm. Further explanation for this application: The wooden roof frame of this application mainly undergoes three force system conversion processes during the repair process. The first is that the original brick wall columns are subjected to force (part of them have added connecting beams and increased brick column cross-section in the past); the second is the vertical poles (15mm spiral top support), which is to support the wooden structure and bear the force of the entire frame; the third process is to remove the vertical poles and use the new frame beam-column system to support the force.

[0025] This application requires retaining the original wooden truss and demolishing the load-bearing walls on the north, west and south sides. Because the wooden truss is erected on the load-bearing wall, it needs to be supported before demolishing the truss. Considering that the wooden truss structure needs to be fully surveyed and reinforced, a full-height support frame is set up in the building, and a pole is added at the lower hanging beam, and a disc-shaped steel pipe is used to connect the full-height frame with the steel pipe. After the pole is erected and accepted, the bracket is firmly tied to the original full-height support frame.

[0026] The force on the scaffolding in this application is only the gravity of the roof truss divided equally to each vertical pole. Because the roof tiles have been removed during the jacking stage, it has been verified that 6 vertical poles are needed for jacking. Figure 2 As shown, the six vertical poles are arranged symmetrically with a spacing of 2400mm in between, and the lifting height is controlled within 15mm. The lifting process will adopt the support of both sides and the middle at the same time, and the lifting will be symmetrical to ensure the stability of the frame. The lifting process will adopt the order of lifting the middle first and then the two sides at the same time.

[0027] In summary, this application uses vertical poles (15mm spiral top support) to support the wooden truss away from the load-bearing brick wall structure, and the whole house system is stressed; then the east wall is reinforced, and the other three walls are newly built to achieve structural strength. After the subsequent roof structure repair is completed, the frame is removed. The system conversion in this application fully considers the deformation and deflection of the wooden truss; during the operation, intelligent information technology is used to strengthen the monitoring of node displacement, connection relaxation deformation, and component deflection during the conversion process. At the same time, the installation accuracy is strictly controlled on site to within 5mm of the column elevation error (the truss falls on the column), and multiple re-measurements and acceptances are carried out. The specific elevation is measured by a fixed prism.

[0028] In the specification of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0029] 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 it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A method for protecting and repairing a roof truss without falling down, characterized in that: The following steps are involved: S1: Remove the ridge, bricks and tiles, waterproof components, tile hanging strips, water-proof strips and asphalt felt of the building in sequence until the roof base of the building is reached; S2: Repair the wooden trusses at the base of the roof; S3: After the repair is completed, a keel frame is installed on the wooden roof frame; S4: Install the supporting net and set fixed beams, and fill rock wool between the beams as insulation boards; S5: laying wooden lookout boards on the beams, and applying anti-corrosion paint on the wooden lookout boards; S6: Laying a double layer of SBS modified asphalt waterproofing membrane on the wooden slab; S7: installing wooden water-following strips, which are arranged along the water flow direction, and then installing wooden tile hanging strips, which are arranged horizontally and perpendicular to the water flow direction; S8: Lay roof tiles and ridges, fix the eaves with seals, and perform anti-corrosion treatment; S9: Install lightning rods and lightning strips, then set up downpipes and install decorative panels; S10: After the repair is completed, an inspection is carried out to ensure that the repair is complete, solid and leak-free, and finally a partial acceptance is carried out.

2. The method for protecting and repairing a non-falling roof truss according to claim 1 is characterized in that: Before performing step S1, the method further includes the following steps: S0: Survey, test, evaluate, identify, form reports, and guide design work.

3. The method for protecting and repairing a non-falling roof truss according to claim 2 is characterized in that: The following steps are also included between step S0 and step S1: A full-floor support frame is built in the building, the load of the wooden roof truss is measured and calculated, and multiple vertical poles are installed on the full-floor support frame. The roof support of the building is completed through the vertical poles, the south, west and north walls are demolished, and new walls are built on the south, west and north sides, and the east wall is reinforced. There are at least six vertical poles, and the vertical poles are symmetrically spaced; When the vertical poles support the roof of the building, the order of first the two sides and then the middle is adopted, and the jacking is symmetrical to ensure that the frame is stable in force and the jacking height is not more than 15mm.

4. The method for protecting and repairing a non-falling roof truss according to claim 1 is characterized in that: The step S2 includes the following contents: The working condition of the entire roof truss is analyzed through finite element software analysis, and the strength of the components is tested using a needle resistance meter. Components that do not meet the strength requirements are replaced.

5. The method for protecting and repairing a non-falling roof truss according to claim 4 is characterized in that: The step S2 also includes the following contents: When cracks exist on the surface of wooden components of wooden roof trusses: the width of the crack is L. When L≤3mm, epoxy resin is used to fill the cracks tightly; when 3mm<L<30mm, wood chips are used for patching, and then epoxy resin glue is used for bonding, and steel hoops are provided on the outside of the cracks for reinforcement; when L≥30mm, new wooden components are made to replace old components. When there is decay on the surface of the wooden components of the wooden roof truss: the diameter of the wooden component is D, the outer surface area is S, the decay depth is d, and the decay area is s. If d≥1 / 5D or s≥1 / 2S, make new wooden components to replace the old ones; otherwise, remove the decayed parts.

6. The method for protecting and repairing a non-falling roof truss according to claim 1 is characterized in that: The step S9 also includes the following contents: Steel tie rod vertical supports were added in all other bays based on the original vertical support positions and connected to the original roof trusses through steel plate hoops so as to disperse the force directly to the adjacent roof trusses.

7. The method for protecting and repairing a non-falling roof truss according to claim 1 is characterized in that: The thickness of the rock wool in step S4 is at least 160 mm, and the thickness of the wooden plank in step S5 is at least 30 mm.

8. The method for protecting and repairing a non-falling roof truss according to claim 1 is characterized in that: The thickness of the waterproof coiled material in step S6 is at least 6 mm.

9. The method for protecting and repairing a non-falling roof truss according to claim 1 is characterized in that: In step S7, the thickness of the wooden water-smoothing strip is at least 30 mm, and the thickness of the wooden tile hanging strip is at least 30 mm.

10. The method for protecting and repairing a non-falling roof truss according to claim 1 is characterized in that: The step S10 also includes the following contents: The pole unloading operation is performed so that the weight of the wooden roof frame is transferred to the wall to bear the weight, and the repair work is completed.

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