Waterproof structure for adding steel structure stand column on existing reinforced concrete roof
By adding a waterproof structure to the steel structure columns on the reinforced concrete roof, and using a combination of column base embedded plates, tie rod anchor plates and waterproof layers, the safety issues of reinforced concrete renovation and expansion and the excessive load on the steel structure were solved, thus realizing the transformation into a green and low-carbon building.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-10
AI Technical Summary
In the renovation of existing buildings, the expansion and renovation of reinforced concrete structures affects safety, while the expansion and renovation of steel structures is too heavy and uneconomical, and does not meet the requirements of green and low-carbon buildings.
When adding steel structure columns to a reinforced concrete roof, a combination structure of column base embedded plate, tie plate, waterproof layer and protective layer is adopted. Stability and load-bearing capacity are enhanced by double nut anchors and post-installed rebar, and seamless connection is achieved by using compatible waterproof materials.
It achieves low structural load, high safety, low environmental impact, reusable materials, applicability to various building types, and meets the requirements of green and low-carbon development.
Smart Images
Figure CN223984293U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to building technical field, especially in the existing reinforced concrete roof increases the waterproof structure of steel structure stand. BACKGROUND
[0002] Under the policy background of the state advocating city renewal, old house reconstruction, the reconstruction of the existing building roof is an important part. The existing transformation structure mainly has two kinds:
[0003] 1, using reinforced concrete structure to reconstruct, because the structure and material load are larger, the structure safety of old building has greater influence, and the serious possibility leads to collapse;
[0004] 2, using steel structure reconstruction, steel structure column foot embedded part is directly acted on the existing roof finish surface;Or set reinforced concrete foundation on the existing roof finish surface, and then lay column foot embedded part on the foundation. The former will destroy the building roof insulation layer, waterproof layer, influence building use;The latter because the column foot foundation is larger, also faces the load of the added foundation, is not economic, is not beautiful, is not flexible, and the use function is limited, cannot satisfy the development requirement of the state green low carbon building. UTILITY MODEL CONTENT
[0005] The utility model discloses a waterproof structure of steel structure stand is added to the existing reinforced concrete roof, and the structure is reformed to the required position, and the environmental influence is less, and the material can be recycled, promotes the green, low carbon development of old building.
[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a waterproof structure of steel structure stand is added to the existing reinforced concrete roof, and the structure is reformed to the required position, and the environmental influence is less, and the material can be recycled, promotes the green, low carbon development of old building.
[0007] Column foot embedded plate is embedded on the structure board upper end surface of removing roof protection layer and structure board protection layer, and is located just above the corresponding structure beam;
[0008] The counter pull anchor plate is arranged on the lower surface of the structure board and at least includes two groups, and the column foot embedded plate is fixedly connected with the structure board through the counter pull anchor plate;
[0009] The first waterproof layer is arranged on the column foot embedded plate and the surface of steel structure stand;
[0010] The first protection layer is covered on the column foot embedded plate and the first waterproof layer;
[0011] The second protection layer is covered on the first protection layer and is connected with the roof protection layer.
[0012] In some embodiments, the tie plate is internally fixed with double-nut anchor bolts.
[0013] In some embodiments, the method further includes post-installed rebar, the upper end of which is fixedly connected to the column base plate, and the lower end of which is implanted into the structural beam.
[0014] In some embodiments, the gap between the structural plate and the column base plate is filled with Grade A adhesive.
[0015] In some embodiments, the second protective layer includes a second waterproof layer and a waterproof protective layer, and the roof protective layer includes a roof waterproof layer and an outer protective layer, wherein the second waterproof layer and the roof waterproof layer are made of compatible materials.
[0016] In some embodiments, the first waterproof coating comprises a hot-melt non-curing rubber asphalt waterproof coating with a thickness of not less than 2.0 mm.
[0017] The waterproof membrane includes a self-adhesive polymer-modified bitumen waterproof membrane with a thickness of not less than 1.5 mm.
[0018] The insulation layer comprises extruded polystyrene insulation board with a thickness of not less than 40mm.
[0019] The nonwoven fabric layer comprises a dry-laid layer of polyester fiber nonwoven fabric.
[0020] The concrete layer comprises C20 fine aggregate concrete with a thickness of not less than 50 mm.
[0021] In some embodiments, a second waterproof coating is also included, which is located at the bottom of the first waterproof coating and covers the entire surface of the column base plate and the structural plate connected to both sides of the column base plate.
[0022] In some embodiments, the method further includes a second waterproof coating, which is located at the bottom of the first waterproof coating and covers the entire surface of the column base plate and the structural plate connected to both sides of the column base plate.
[0023] In some embodiments, the first waterproof layer comprises a hot-melt non-curing rubber asphalt waterproof coating applied fully from the column base plate to a depth of 250 mm below the final finished surface.
[0024] In some embodiments, the first protective layer has a built-in bidirectional steel wire mesh and extends at least 100mm above the finished building surface.
[0025] Compared with the prior art, the beneficial effects of the embodiments of this utility model are:
[0026] 1. By setting up structural beams and slabs, the overall structural load of the building is small and the structural safety is high. With the setting of column base embedded plates, structural modifications can be made at the required locations with minimal environmental impact. Materials can be reused, promoting the green and low-carbon development of old buildings. Anchor plates are used to enhance the stability and load-bearing capacity of the structure. They are also flexible in arrangement and have a wide range of applications, including residential, industrial, and office buildings.
[0027] 2. By using double-nut anchor bolts, the tie plate and structural plate are connected to improve the overall stability of the structure. Post-installed rebar is used to enhance the load-bearing capacity and stability of the structure. Grade A adhesive is used to fill the gap between the outer protective layer and the column base plate to improve the sealing performance.
[0028] 3. The C20 fine stone concrete protective layer, polyester fiber non-woven fabric, and extruded polystyrene insulation board serve to protect, reinforce, and insulate the structure, respectively. The self-adhesive polymer-modified bitumen waterproof membrane is used to improve the waterproof performance of the structure, while the two-layer non-curing rubber bitumen waterproof coating is designed to enhance the waterproof effect. Attached Figure Description
[0029] The above and additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0030] Fig. 1 This is a schematic diagram of the structure of this utility model;
[0031] Fig. 2 This is a schematic diagram of the structure of the roof protective layer of this utility model.
[0032] In the diagram: 1. Structural beam; 2. Structural slab; 3. Tie anchor plate; 4. Column base plate; 5. Double nut anchor bolt; 6. Post-installed rebar; 7. Grade A adhesive; 8. Roof protective layer; 801. Concrete layer; 802. Non-woven fabric layer; 803. Insulation layer; 804. Waterproof membrane; 805. First waterproof coating; 806. Second waterproof coating; 9. First protective layer; 10. Second waterproof layer; 11. Waterproof protective layer. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Please see Figs. 1-2This utility model provides a technical solution: a waterproof structure for adding steel structural columns to an existing reinforced concrete roof, comprising a column base embedded plate 4, which is embedded on the upper surface of a structural slab 2 (after removing the roof protective layer 8 and the structural slab protective layer) and located directly above the corresponding structural beam 1; tie anchor plates 3, which are provided on the lower surface of the structural slab 2 and include at least two sets, and the column base embedded plate 4 is fixedly connected to the structural slab 2 through the tie anchor plates 3; a first waterproof layer is provided on the surface of the column base embedded plate 4 and the steel structural column; a first protective layer 9 covers the column base embedded plate 4 and the first waterproof layer; and a second protective layer covers the first protective layer 9. The tie plate 3, which is connected to the roof protective layer 8, is fixed with double nut anchors 5 inside. Through the structural beams 1 and structural slabs 2, the overall structural load of the building is small and the structural safety is high. With the setting of column base embedded plates 4, structural modifications can be made at the required locations with minimal environmental impact. The materials can be reused, promoting the green and low-carbon development of old buildings. The tie plate 3 is used to enhance the stability and load-bearing capacity of the structure. It is flexible in arrangement and has a wide range of applications, including residential, industrial, and office buildings. The double nut anchors 5 connect the tie plate 3 and the structural slab 2, improving the overall structural stability.
[0035] In some embodiments, the tie plate 3 is internally fixed with double nut anchors 5. Tightening the double nut anchors not only meets the fixing requirements but also has a tightening effect, resulting in better waterproof sealing.
[0036] In some embodiments, the system further includes a post-installed rebar 6, the upper end of which is fixedly connected to the column base embedded plate 4, and the lower end of which is embedded inside the structural beam 1. The post-installed rebar 6 is used to enhance the load-bearing capacity and stability of the structure. In this embodiment, the upper end of the post-installed rebar 6 is fixed to the column base embedded plate by through-hole plug welding. Specifically, when the implantation length of the post-installed rebar 6 is ≥27d (d is the diameter of the rebar), it can be set alone. When the floor slab thickness is too thin to meet the 27d implantation requirement, the post-installed rebar 6 and the tie plate 3 need to be set simultaneously, or only at least two sets of tie plates 3 need to be set.
[0037] In some embodiments, the gap between the structural plate 2 and the column base plate 4 is filled with Class A adhesive 7; the Class A adhesive 7 fills the gap between the outer protective layer and the column base plate 4, thus achieving the effects of filling and further waterproofing.
[0038] In some embodiments, the second protective layer includes a second waterproof layer 10 and a waterproof protective layer 11, and the roof protective layer 8 includes a roof waterproof layer and an outer protective layer. The materials of the second waterproof layer 10 and the roof waterproof layer 8 are compatible. When the waterproof materials are compatible, the connection between the second waterproof layer 10 and the roof waterproof layer 8 can be fused together to achieve a seamless connection and provide better waterproofing.
[0039] In some embodiments, the second protective layer and the roof protective layer 8, from bottom to top, include a first waterproof coating 805, a waterproof membrane 804, a thermal insulation layer 803, a non-woven fabric layer 802, and a concrete layer 801 that are interconnected.
[0040] The first waterproof coating 805 includes a hot-melt non-curing rubber asphalt waterproof coating with a thickness of not less than 2.0 mm; the waterproof membrane 804 includes a self-adhesive polymer modified asphalt waterproof membrane with a thickness of not less than 1.5 mm; the insulation layer 803 includes an extruded polystyrene insulation board with a thickness of not less than 40 mm; the non-woven fabric layer 802 includes a dry-laid layer of polyester fiber non-woven fabric; and the concrete layer 801 includes a C20 fine stone concrete second waterproof coating 806 with a thickness of not less than 50 mm. The second waterproof coating 806 is located at the bottom of the first waterproof coating 805 and covers the entire surface of the column base embedded plate 4 and the structural plate 2 connected to both sides of the column base embedded plate 4.
[0041] The concrete layer 801, non-woven fabric layer 802, and insulation layer 803 respectively serve to protect, reinforce, and insulate the structure. The waterproof membrane 804 is used to improve the waterproof performance of the structure, while the first waterproof coating 805 and the second waterproof coating 806 are used to enhance the waterproof effect.
[0042] In some embodiments, the first waterproof layer includes a hot-melt non-curing rubber asphalt waterproof coating applied from the column base plate 4 to a depth of 250mm below the final finished surface; the first waterproof layer, by covering the column base plate 4 and the steel structure with the waterproof coating, can not only improve the waterproof performance of the structure, but also prevent the steel structure from rusting and delay aging.
[0043] In some embodiments, the first protective layer 9 is a C20 fine stone concrete protective layer. The width of the first protective layer 9 is the width of the embedded plate plus 100mm on each side, the thickness is ≥50mm, and it is not less than 100mm above the finished building surface. It has a built-in bidirectional steel wire mesh. The first protective layer 9 can enhance the load-bearing capacity and stability of the structure.
[0044] Working Principle: The technical solution of this utility model embodiment is a specific installation method for adding a steel structure column to an existing reinforced concrete roof for waterproofing. First, according to the design plan, determine the location where the steel structure column needs to be installed. The steel structure column base embedded plate 4 needs to be installed directly above the structural beam 1. At the location where the column needs to be installed, remove the roof protective layer 8, and then remove the roof protective layer 8 from the existing structural beam 1 and structural slab 2. Then, embed the column base embedded plate 4. Next, insert the rebar 6 into the structural beam 2 or tie it to the floor slab. The rebar 6 is fixed to the column base embedded plate 4 by through-hole plug welding. When the rebar is inserted into the beam, the insertion length should be ≥27d (d is...). (Rebar diameter); When the floor slab thickness is too thin to meet the 27d implantation requirement, floor slab tie rods should be used, and tie rod anchor plates 3 should be set below the floor slab. The post-installed rebar 6 and tie rod anchor plates 3 should be fixed by double nut anchor bolts 5. Use Class A adhesive 7 to fill the gap between column base embedded plate 4 and structural beam 1 and structural slab 2. After fixing column base embedded plate 4, apply hot melt non-curing rubber asphalt waterproof coating from column base embedded plate 4 to 250mm below the final finished surface. Use concrete layer 801 to protect column base embedded plate 4. Set a second waterproof layer 10 on top of the first protective layer 9. The waterproof material needs to be compatible with the original building waterproof material and the handover treatment between it and the original roof waterproof layer should be done well.
[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A waterproof structure for adding a steel structural column to an existing reinforced concrete roof, characterized by, The application relates to a waterproof structure for adding a steel structure column to an existing reinforced concrete roof. The application comprises: a column base plate (4) embedded on the upper end face of a structure plate (2) with the roof protection layer (8) and the structure plate protection layer removed and located directly above a corresponding structure beam (1); a tension anchor plate (3) arranged on the lower surface of the structure plate (2) and comprising at least two groups, the column base plate (4) being fixedly connected to the structure plate (2) through the tension anchor plate (3); a first waterproof layer arranged on the surface of the column base plate (4) and the steel structure column; a first protection layer (9) covering the column base plate (4) and the first waterproof layer; 2. A waterproof structure of adding steel structure columns to an existing reinforced concrete roof according to claim 1, characterized in that: a second protection layer covering the first protection layer (9) and connected to the roof protection layer (8).
3. The waterproof structure of claim 1, wherein: The tension anchor plate (3) is internally fixed with a double-nut anchor bolt (5).
4. The waterproof structure of claim 1, wherein: The application further comprises a post-anchored steel bar (6) with the upper end fixedly connected to the column base plate (4) and the lower end embedded in the structure beam (1).
5. A waterproof structure of adding steel structure stand column to the existing reinforced concrete roof according to any one of claims 1-4, characterized in that: The gap between the structure plate (2) and the column base plate (4) is filled with A-grade glue (7).
6. A waterproof structure of adding steel structure stand column to the existing reinforced concrete roof according to claim 5, characterized in that: The second protection layer comprises a second waterproof layer (10) and a waterproof protection layer (11), and the roof protection layer (8) comprises a roof waterproof layer and an outer protection layer, wherein the materials of the second waterproof layer (10) and the roof waterproof layer are compatible. The second protection layer and the roof protection layer (8) sequentially comprise a first waterproof coating layer (805), a waterproof roll material (804), an insulation layer (803), a non-woven fabric layer (802) and a concrete layer (801) which are connected to each other from bottom to top.
7. The waterproof structure for adding a steel structure column to an existing reinforced concrete roof according to claim 6, wherein: the first waterproof coating layer (805) comprises a hot melt type non-cured rubber asphalt waterproof coating with a thickness of not less than 2.0 mm, the waterproof roll material (804) comprises a self-adhesive polymer modified asphalt waterproof roll material with a thickness of not less than 1.5 mm, the insulation layer (803) comprises an extruded polystyrene insulation board with a thickness of not less than 40 mm, the non-woven fabric layer (802) comprises a dry-paved layer of polyester fiber non-woven fabric, 8. A waterproof structure of adding steel structure stand column to the existing reinforced concrete roof according to claim 7, characterized in that: the concrete layer (801) comprises C20 fine stone concrete with a thickness of not less than 50 mm.
9. The waterproof structure of claim 1, wherein: The application further comprises a second waterproof coating layer (806) located at the bottom of the first waterproof coating layer (805) and covering the surface layer of the column base plate (4) and the structure plate (2) connected to the two sides of the column base plate (4).
10. The waterproof structure of claim 1, wherein: The first waterproof layer comprises hot melt type non-cured rubber asphalt waterproof coating which is applied below 250 mm from the column base plate (4) to the finally completed surface. The first protection layer (9) is internally provided with a bidirectional steel wire mesh and protrudes from the building completed surface by not less than 100 mm.