Waterproof structure for raft foundation of old building
By designing a waterproof structure for the foundation of the old-fashioned building raft slab including waterproof inner liner, expansion water stop glue and groove, the problem of leakage of the foundation of the old-fashioned building raft slab is solved and effective waterproofing effect is achieved.
Patent Information
- Application Number
- CN202420972045.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The foundation of old-town raft slabs often has leakage problems. The existing technology such as water-stop needle grouting can easily cause cracks in the foundation of old-town raft slabs and cannot effectively prevent leakage.
A waterproof structure including old-fashioned raft foundation, column foundation, waterproof inner liner, concrete prefabricated slab and building surface layer was designed. Expansion water stop glue is installed at the junction of the waterproof inner liner and column foundation, and grooves are set in the waterproof inner liner to store water, so the waterproof effect is achieved.
This structure can effectively prevent leakage of the raft foundation of old-town buildings, avoid large-scale water accumulation, and achieve waterproofing effect through the design of expansion water stop glue and grooves when encountering large water pressure.
Smart Images
Figure CN222782105U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building civil engineering, and in particular to a waterproof structure of a raft foundation of an old renovation building. Background Art
[0002] The raft slabs of old buildings often leak, which poses a hidden danger to the safety of the building. The conventional construction process is to use water stop needles to stop water. Water stop needle grouting can have a good repair effect on new buildings, but for the raft foundation of old buildings, due to years of disrepair and reduced bearing capacity, the use of water stop needle grouting is likely to cause cracks in the raft foundation of old buildings. Utility Model Content
[0003] Therefore, the utility model aims to overcome the technical problems in the prior art, thereby providing a waterproof structure for the raft foundation of an old renovation building which will not damage the raft foundation of the old renovation building.
[0004] The utility model provides a raft foundation waterproof structure for old building renovation, comprising:
[0005] An old renovation raft foundation, wherein the upper surface of the old renovation raft foundation is provided with a plurality of column foundations;
[0006] A waterproof liner, set between two column foundations;
[0007] A prefabricated concrete slab is laid on the upper surface of the waterproof liner;
[0008] The building surface layer is laid on the precast concrete slab and the column foundation.
[0009] Furthermore, embedded steel bars are arranged on the old renovation raft foundation, and the embedded steel bars protrude from the upper surface of the old renovation raft foundation.
[0010] Furthermore, the waterproof liner is a concrete structure cast on the embedded steel bars.
[0011] Furthermore, it also includes:
[0012] The expansion waterproof adhesive is arranged at the junction of the waterproof liner and the column foundation.
[0013] Furthermore, the expansion water-stop adhesive is located below the contact surface between the waterproof liner and the concrete precast panel.
[0014] Furthermore, the waterproof liner is provided with a groove with an opening facing upward.
[0015] Furthermore, a bracket is arranged in the groove, and the upper surface of the bracket abuts against the precast concrete slab.
[0016] Furthermore, the precast concrete panel has a rough surface, and the rough surface is the contact surface between the waterproof liner and the precast concrete panel.
[0017] Furthermore, the top surface of the column foundation is not higher than the top surface of the precast concrete slab.
[0018] The technical solution of the utility model has the following advantages:
[0019] The utility model provides a waterproof structure for the raft foundation of an old renovation building, which is provided with a waterproof liner and an expansion waterproof glue. If water seepage occurs on the old renovation raft foundation, the water seepage will flow upward along the gap between the waterproof liner and the column foundation under the obstruction of the waterproof liner, and will not form a large area of water accumulation on the old renovation raft foundation. When the water seepage flows upward along the gap between the waterproof liner and the column foundation, the expansion waterproof glue can expand when it encounters water, and then the gap between the waterproof liner and the column foundation is blocked, thereby achieving a waterproof effect. If the water seepage is relatively large and the water pressure is relatively large, the water seepage may break through the expansion waterproof glue and continue to flow upward. At this time, the water seepage can flow into the groove of the waterproof liner, and the groove can play a role in water storage. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the specific implementation methods of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 It is a schematic diagram of the structure of the utility model.
[0022] Description of reference numerals;
[0023] 1. Raft foundation for old building renovation; 2. Column foundation; 3. Waterproof liner; 4. Precast concrete slab; 5. Building surface layer; 6. Expansive waterstop glue; 7. Groove; 8. Bracket. DETAILED DESCRIPTION
[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0028] Example
[0029] like Figure 1 A specific implementation method of a raft foundation waterproof structure for an old building renovation is shown, and the raft foundation waterproof structure for an old building renovation includes:
[0030] The old renovation raft foundation 1, the upper surface of the old renovation raft foundation 1 is provided with a plurality of column foundations 2; the column foundation 2 is one of the most basic structural elements in a building, and its function is to provide support and a stable foundation for the building's columns. It is usually made of concrete or other high-strength materials to ensure sufficient bearing capacity and durability. If the old renovation raft foundation 1 is soaked for a long time, the bearing capacity will gradually decrease, so it is necessary to waterproof the old renovation raft foundation 1.
[0031] The waterproof liner 3 is arranged between the two column foundations 2; the waterproof liner 3 is laid on the upper surface of the old modified raft foundation 1. If water seepage occurs on the old modified raft foundation 1, the water will flow upward along the gap between the waterproof liner 3 and the column foundation 2 under the obstruction of the waterproof liner 3, and will not form a large area of water accumulation on the old modified raft foundation 1.
[0032] The precast concrete slab 4 is laid on the upper surface of the waterproof liner 3 ; the precast concrete slab 4 supports the building surface layer 5 .
[0033] The building surface layer 5 is laid on the precast concrete slab 4 and the column foundation 2 .
[0034] Furthermore, embedded steel bars are arranged on the old renovation raft foundation 1 , and the embedded steel bars protrude from the upper surface of the old renovation raft foundation 1 .
[0035] Furthermore, the waterproof liner 3 is a concrete structure cast on the embedded steel bars. The waterproof liner 3 can be fixedly connected to the old renovation raft foundation 1 through the embedded steel bars.
[0036] Furthermore, it also includes:
[0037] The expansion waterproof glue 6 is arranged at the junction of the waterproof liner 3 and the column foundation 2. When the seepage water flows upward along the gap between the waterproof liner 3 and the column foundation 2, the expansion waterproof glue 6 can swell when it encounters water, and then block the gap between the waterproof liner 3 and the column foundation 2, thereby achieving a waterproof effect.
[0038] Furthermore, the expansion waterproof adhesive 6 is located below the contact surface between the waterproof liner 3 and the precast concrete panel 4 .
[0039] Furthermore, the waterproof liner 3 is provided with a groove 7 with an upward opening. If there is a lot of water seepage and the water pressure is relatively large, the water seepage may break through the expansion water stop glue 6 and continue to flow upward. At this time, the water seepage can flow into the groove 7 of the waterproof liner 3, and the groove 7 can play a role in water storage.
[0040] Furthermore, a bracket 8 is provided in the groove 7, and the upper surface of the bracket 8 abuts against the precast concrete slab 4. The bracket 8 can support the precast concrete slab 4 to prevent the precast concrete slab 4 from being deformed.
[0041] Further, the concrete precast panel 4 has a rough surface, and the rough surface is the contact surface between the waterproof liner 3 and the concrete precast panel 4. The contact surface between the waterproof liner 3 and the concrete precast panel 4 is a rough surface, and there will be a gap at the contact surface between the waterproof liner 3 and the concrete precast panel 4. When the seepage water breaks through the expansion water stop glue 6 and continues to flow upward, the seepage water can flow into the groove 7 along the gap between the waterproof liner 3 and the concrete precast panel 4.
[0042] Further, the top surface of the column foundation 2 is not higher than the top surface of the precast concrete slab 4. The building surface layer 5 is mainly arranged on the upper surface of the precast concrete slab 4 and forms a plane. The precast concrete slab 4 supports the building surface layer 5, so the column foundation 2 is not higher than the precast concrete slab 4.
[0043] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. A waterproof structure for raft foundation of old building renovation, characterized in that: include: An old renovation raft foundation (1), wherein a plurality of column foundations (2) are arranged on the upper surface of the old renovation raft foundation (1); A waterproof liner (3) is arranged between the two column bases (2); A prefabricated concrete slab (4) is laid on the upper surface of the waterproof liner (3); The building surface layer (5) is laid on top of the precast concrete slab (4) and the column foundation (2).
2. The waterproof structure of raft foundation for old building renovation according to claim 1 is characterized in that: The old renovation raft foundation (1) is provided with embedded reinforcement bars, and the embedded reinforcement bars protrude from the upper surface of the old renovation raft foundation (1).
3. The waterproof structure of raft foundation for old building renovation according to claim 1 is characterized in that: The waterproof liner (3) is a concrete structure cast on the embedded reinforcement.
4. The waterproof structure of raft foundation for old building renovation according to claim 1 is characterized in that: Also includes: The swelling water-stopping glue (6) is arranged at the junction of the waterproof liner (3) and the column foundation (2).
5. The waterproof structure of raft foundation for old building renovation according to claim 4 is characterized in that: The swelling waterproof adhesive (6) is located below the contact surface between the waterproof liner (3) and the precast concrete panel (4).
6. The waterproof structure of raft foundation for old building renovation according to claim 1, characterized in that: The waterproof inner liner (3) is provided with a groove (7) with an opening facing upward.
7. The waterproof structure of raft foundation for old building renovation according to claim 6 is characterized in that: A bracket (8) is arranged in the groove (7), and the upper surface of the bracket (8) is in contact with the precast concrete slab (4).
8. The waterproof structure of raft foundation for old building renovation according to claim 1, characterized in that: The precast concrete panel (4) has a rough surface, and the rough surface is the contact surface between the waterproof liner (3) and the precast concrete panel (4).
9. The waterproof structure of raft foundation for old building renovation according to claim 1, characterized in that: The top surface of the column foundation (2) is not higher than the top surface of the precast concrete slab (4).