Damp-proof and anti-corrosion connection structure

Abstract

The utility model relates to a damp-proof and corrosion-proof connecting structure which comprises a rammed earth wall body, a wood beam and a protective layer. The wood beam is embedded in the rammed earth wall body, and a protective layer is arranged between the rammed earth wall body and the wood beam; the protective layer is arranged around the wood beam and sequentially provided with a waterproof layer, a protective layer inner core and a protective surface layer from inside to outside, the waterproof layer is arranged on the surface of the wood beam, and the protective surface layer is connected with the rammed earth wall. The damp-proof and corrosion-proof connecting structure is installed at the connecting position of the wood beam and the rammed earth wall, the waterproof layer arranged on the inner side of the connecting structure has good waterproofness, it is ensured that water vapor in the wood beam can permeate through the waterproof layer to be volatilized and discharged, condensate water is prevented from permeating, and the situation that the connecting position of the wood beam and the rammed earth wall is damaged due to damp is avoided; the protective layer inner core is high in rigidity and good in tensile strength, so that the connection structure is stressed uniformly and stably; the protective surface layer is fixedly connected with the wood beam, and sliding between the protective surface layer and the wood beam during vibration is avoided. Therefore, the wood beam can be effectively prevented from being affected with damp and corroded, and the service life of the wood beam is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering joint structures, in particular to a moisture-proof and corrosion-resistant joint structure. Background Art

[0002] At present, traditional earth buildings are generally built with a mixed construction method of earth and wood. The mixed structure and materials themselves have many pores, and the soil in the mixed earth and wood is relatively loose. The climate in the south is relatively humid. Due to the respiration of the wall and the humid climate, moisture will be retained in the wall. The contact point between the wooden components and the earth wall is easy to absorb moisture, and it is impossible to ventilate and dry in time, which is not conducive to drying. At the same time, there are gaps at the joints between the earth wall and the wooden components. Dust easily accumulates in the gaps. The dust settles after absorbing moisture, providing a good shelter and living place for fungi and insects. Therefore, the intersection of wooden components and rammed earth walls is prone to moisture and corrosion, resulting in cracking and deformation of structures such as wooden beams.

[0003] The above-mentioned problems of moisture and corrosion are currently mainly solved by the material of wooden beams. For example, when selecting materials, the wood must first be dried by the atmosphere, and then prevented by spraying waterproof materials, applying preservatives, and protective paints. However, the natural drying time of wood is relatively long, and it is generally used after being dried for several months in autumn and winter. Or improvements can be made to the building structure, such as using stone foundations at the bottom of the columns to block the infiltration of ground moisture, and adding "wooden beams" between the columns and the foundation to separate the two to prevent moisture from directly corroding the wooden columns. Therefore, the existing building structure improvements are mainly aimed at wooden columns and foundation structures. The nodes where rammed earth and wooden components meet are locally dark, humid, and have gaps, which makes it easy for mold to grow, resulting in the problem of moisture and corrosion of wooden components. It has not been solved. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a moisture-proof and anti-corrosion joint structure, which can isolate moisture in the rammed earth wall from penetrating into the wooden beams by adding the joint structure at the node between the rammed earth wall and the wooden beam structure, thereby improving the moisture-proof and anti-corrosion performance of the wooden beams at the joint of earth and wood, and improving the durability of the wooden beams in earth building structures.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A moisture-proof and anti-corrosion joint structure, comprising a rammed earth wall, a wooden beam and a protective layer;

[0007] The wooden beams are embedded in the rammed earth walls, and a protective layer is provided between the rammed earth walls and the wooden beams;

[0008] The protective layer is arranged around the wooden beam, and is provided with a waterproof layer, a protective layer inner core and a protective surface layer from the inside to the outside. The waterproof layer is arranged on the surface of the wooden beam, and the protective surface layer is connected to the rammed earth wall.

[0009] Furthermore, the waterproof layer includes a waterproof coating and a spunbond polyethylene waterproof and breathable membrane. The waterproof coating is applied to the outer surface of the wooden beam, and the spunbond polyethylene waterproof and breathable membrane is wrapped around the outside of the waterproof coating. The spunbond polyethylene waterproof and breathable membrane has the characteristics of wear resistance, temperature resistance and good waterproofness, ensuring that the water vapor inside the wooden beam can be discharged while preventing condensation water from penetrating.

[0010] Furthermore, the inner core of the protective layer is meta-aramid honeycomb paper, which is wrapped on the outer surface of the spunbonded polyethylene waterproof breathable membrane to increase the bearing capacity of the protective layer. Meta-aramid honeycomb paper has good thermal insulation performance, light weight, high rigidity, good tensile strength, good thermal stability and flame retardancy.

[0011] Furthermore, the front and back surfaces of the meta-aramid honeycomb paper have the same strength.

[0012] Furthermore, the air permeability of the meta-aramid honeycomb paper is 0.004 μm / (Pa·s).

[0013] Furthermore, the protective surface layer is a galvanized steel plate with a pattern, which is used to increase the friction between the protective layer and the rammed earth wall.

[0014] Furthermore, the galvanized steel plate is fixedly connected to the wooden beam by screws, and the screws are provided with washers.

[0015] Furthermore, epoxy resin composite foam is filled between the protective surface layer and the rammed earth wall to fill the gap and fix the protective structure. The epoxy resin composite foam material has the characteristics of light weight and high strength, which can tightly fix the rammed earth wall and the wooden beam with the protective layer to avoid slipping when subjected to vibration.

[0016] In general, the utility model has the following advantages: by installing the moisture-proof and anti-corrosion joint structure at the connection between the wooden beam and the rammed earth wall, the waterproof layer arranged on the inner side of the joint structure has good waterproof properties, ensuring that the water vapor inside the wooden beam can be volatilized and discharged through the waterproof layer and preventing condensed water from penetrating, thereby avoiding damage to the joint between the wooden beam and the rammed earth wall due to moisture; the inner core of the protective layer has high rigidity and good tensile strength, so that the joint structure is evenly and stably stressed; the protective surface layer is fixedly connected to the wooden beam to avoid slippage between the two during vibration. Therefore, the utility model effectively prevents moisture and corrosion and prolongs the service life of the wooden beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the structural connection diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the protective layer;

[0019] Figure 3 is a schematic diagram of the structural cross section of the protective layer;

[0020] Figure 4 This is the structural axonometric drawing of the protective layer.

[0021] In the figure:

[0022] 1-rammed earth wall; 2-wooden beam; 3-protective layer; 4-waterproof layer; 41-waterproof coating; 42-spunbond polyethylene waterproof breathable membrane; 5-protective layer inner core; 6-protective surface layer; 7-screws; 8-epoxy resin composite foam. DETAILED DESCRIPTION

[0023] The utility model will be further described in detail below.

[0024] like Figure 1 and Figure 2 As shown, a moisture-proof and anti-corrosion joint structure includes a rammed earth wall 1, a wooden beam 2 and a protective layer 3; the rammed earth wall 1 is made of a mixture of cement and adhesive, the wooden beam 2 is embedded in the rammed earth wall 1, and a protective layer 3 is provided between the rammed earth wall 1 and the wooden beam 2; the protective layer 3 is arranged around the wooden beam 2, and the protective layer 3 is provided with a waterproof layer 4, a protective layer inner core 5 and a protective surface layer 6 from the inside to the outside, the waterproof layer 4 is arranged on the surface of the wooden beam 2, and the protective surface layer 6 is connected to the rammed earth wall 1.

[0025] like Figures 2 to 4 As shown, the waterproof layer 4 includes a waterproof coating 41 and a spunbonded polyethylene waterproof breathable membrane 42. The waterproof coating 41 is applied to the outer surface of the wooden beam 2, and the spunbonded polyethylene waterproof breathable membrane 42 is wrapped around the outside of the waterproof coating 41. The spunbonded polyethylene waterproof breathable membrane 42 has the characteristics of good wear resistance, temperature resistance and waterproofness, ensuring that the water vapor inside the wooden beam 2 can be discharged while preventing condensation water from penetrating, effectively avoiding problems such as mold generation and local moisture.

[0026] The inner core 5 of the protective layer is meta-aramid honeycomb paper, which is wrapped on the outer surface of the spunbonded polyethylene waterproof and breathable membrane 42 to increase the bearing capacity of the protective layer 3. Meta-aramid honeycomb paper has good thermal insulation performance, light weight, high rigidity, good tensile strength, outstanding corrosion resistance, good thermal stability, and flame retardancy. The greater the transverse tensile strength of the honeycomb paper, the higher the compression strength of the honeycomb core. As the inner core, the external protective surface layer 6 fits tightly with the internal wooden beam 2, making the structure uniform and stable. The front and back surfaces of the meta-aramid honeycomb paper have the same strength. Specifically, the air permeability of the meta-aramid honeycomb paper is 0.004μm / (Pa·s), the front and back surfaces have the same strength, and it has a certain air permeability.

[0027] The protective surface layer 6 is a galvanized steel plate with patterns, which is used to increase the friction between the protective layer 3 and the rammed earth wall 1. The galvanized steel plate is fixedly connected to the wooden beam 2 by screws 7, and the screws 7 are provided with gaskets. The protective surface layer 6 and the rammed earth wall 1 are filled with epoxy resin composite foam 8, which is used to fill the gap between the rammed earth wall 1 and the protective layer 3. The epoxy resin composite foam 8 material has the characteristics of light weight and high strength, and can make the rammed earth wall 1 and the wooden beam 2 tightly fixed to avoid slipping when subjected to vibration.

[0028] The working principle of the utility model is as follows: firstly, a waterproof coating 41 is applied to the outside of the wooden beam 2, and after the waterproof coating 41 is dried and formed into a film, a spunbonded polyethylene waterproof breathable film 42 is wrapped on the outside, and then a meta-aramid honeycomb paper is wrapped on the outside of the spunbonded polyethylene waterproof breathable film 42 as a protective layer inner core 5. A galvanized steel plate with a pattern is installed on the outside of the meta-aramid honeycomb paper as a protective surface layer 6. When a new wooden beam 2 needs to be replaced, the damaged wooden beam 2 is removed and the holes in the wall are cleaned, and the wooden beam 2 with the protective layer 3 is inserted into the rammed earth wall 1, and the gap between the outermost galvanized steel plate and the rammed earth wall 1 is filled with epoxy resin composite foam 8.

[0029] The main functions of the utility model are as follows: by installing the moisture-proof and anti-corrosion joint structure at the connection between the wooden beam 2 and the rammed earth wall 1, the waterproof layer 4 arranged on the inner side of the joint structure has good waterproof properties, ensuring that the water vapor inside the wooden beam 2 can be volatilized and discharged through the waterproof layer 4 and preventing condensed water from penetrating, thereby preventing the joint between the wooden beam 2 and the rammed earth wall 1 from being damaged due to moisture; the inner core 5 of the protective layer has high rigidity and good tensile strength, so that the joint structure is evenly and stably stressed; the protective surface layer 6 is fixedly connected to the wooden beam 2 to avoid slippage between the two during vibration. Therefore, the utility model effectively prevents moisture and corrosion and prolongs the service life of the wooden beam 2.

[0030] This application has the following beneficial effects:

[0031] 1. When replacing a new wooden beam 2, a protective layer 3 is added to prevent possible moisture and corrosion in advance, thereby extending the service life of the wooden beam 2.

[0032] 2. Physical isolation method prevents moisture and corrosion, promotes the discharge of water vapor in the wooden beam 2 while preventing condensed water from entering, and avoids damage to the junction of the wooden beam 2 and the rammed earth wall 1 due to moisture. Avoid using chemical modification or biotechnology, do not affect the structural characteristics of the wood itself, and avoid potential harm to the environment and human body caused by reagents.

[0033] 3. The changes to the original structural form are minor and do not affect the appearance of the historical building.

[0034] 4. A new type of aramid honeycomb paper material is used, which has high structural strength, light weight, and does not increase local load. The method is simple to implement and has strong operability.

[0035] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A moisture-proof and anti-corrosion joint structure, characterized in that: It includes rammed earth walls, wooden beams and protective layers; The wooden beams are embedded in the rammed earth walls, and a protective layer is provided between the rammed earth walls and the wooden beams; The protective layer is arranged around the wooden beam, and is provided with a waterproof layer, a protective layer inner core and a protective surface layer from the inside to the outside. The waterproof layer is arranged on the surface of the wooden beam, and the protective surface layer is connected with the rammed earth wall.

2. A moisture-proof and anti-corrosion joint structure according to claim 1, characterized in that: The waterproof layer comprises a waterproof coating and a spunbonded polyethylene waterproof breathable membrane. The waterproof coating is applied on the outer surface of the wooden beam, and the spunbonded polyethylene waterproof breathable membrane is wrapped around the outer side of the waterproof coating.

3. A moisture-proof and anti-corrosion joint structure according to claim 2, characterized in that: The inner core of the protective layer is meta-aramid honeycomb paper, and the meta-aramid honeycomb paper is wrapped on the outer surface of the spunbonded polyethylene waterproof and breathable membrane to increase the bearing capacity of the protective layer.

4. The moisture-proof and corrosion-resistant joint structure according to claim 3, characterized in that: The front and back surfaces of meta-aramid honeycomb paper have the same strength.

5. The moisture-proof and corrosion-resistant joint structure according to claim 3, characterized in that: The air permeability of meta-aramid honeycomb paper is 0.004 μm / (Pa·s).

6. The moisture-proof and corrosion-resistant joint structure according to claim 1, characterized in that: The protective surface layer is a galvanized steel plate with patterns, which is used to increase the friction between the protective layer and the rammed earth wall.

7. The moisture-proof and corrosion-resistant joint structure according to claim 6, characterized in that: The galvanized steel sheet is fixed to the wooden beam by screws with washers.

8. The moisture-proof and corrosion-resistant joint structure according to claim 6, characterized in that: Epoxy resin composite foam is filled between the protective surface layer and the rammed earth wall to fill the gap and prevent slippage between the protective layer and the rammed earth wall.

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