Waterproof member for reconstruction of underground structure of existing building

Abstract

This utility model provides a waterproofing component for the renovation of underground structures in existing buildings. This waterproofing component is installed between the existing building and the newly cast-in-place structure. It includes a waterstop strip, a semi-water-stopping steel plate, a serrated interface cut into the existing structure, and a channel steel. The serrated interface is installed on the existing building and connected to the waterstop strip. The channel steel is adapted to the waterstop strip, and the semi-water-stopping steel plate is located on the outside of the channel steel. The semi-water-stopping steel plate is located within the newly cast-in-place structure. This waterproofing component for the renovation of underground structures in existing buildings, through the interaction of the waterstop strip, the semi-water-stopping steel plate, the serrated interface cut into the existing structure, and the channel steel, further strengthens the previously single waterstop waterproofing method and also provides additional protection for the originally soft waterstop strip. This significantly increases its service life and waterproofing capability.

Description

Technical Field

[0001] This utility model relates to the technical field of devices for preventing leakage at the interface between new and old structures during the renovation of underground structures of existing buildings, specifically a waterproof component for the renovation of underground structures of existing buildings. Background Technology

[0002] Generally, when expanding or renovating the underground structure of an existing building, involving the demolition of the existing underground structure's foundation slab, pile cap, and wall panels, and the addition of new pile foundations, pile caps, ground beams, and wall panels, the issue of water seepage at the connection points between the old and new concrete structures needs to be considered. Typically, waterstop strips are installed at these connection points to address this problem.

[0003] However, the traditional method of using waterstop strips to prevent leakage is becoming increasingly inadequate under current construction requirements, failing to meet the expectations of construction workers. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a waterproof component for the renovation of underground structures in existing buildings.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a waterproof component for the renovation of underground structures in existing buildings, installed between the existing building and the newly cast-in-place structure. It includes a waterstop strip, a semi-waterstop steel plate, a serrated interface with a groove in the existing structure, and a channel steel. The serrated interface with the groove in the existing structure is installed on the existing building and connected to the waterstop strip. The channel steel is adapted to the waterstop strip, and the semi-waterstop steel plate is installed on the outside of the channel steel. The semi-waterstop steel plate is located within the newly cast-in-place structure.

[0008] Preferably, it also includes reinforcing steel bars, which are placed between the newly cast structure and the existing building.

[0009] Preferably, the reinforcing steel bar is connected to the bottom of the semi-cutoff water-resistant steel plate, and the reinforcing steel bar is connected to the channel steel.

[0010] (III) Beneficial Effects

[0011] This utility model provides a waterproof component for the renovation of underground structures in existing buildings. It possesses the following features:

[0012] Beneficial effects:

[0013] 1. This waterproofing component for the renovation of existing building underground structures utilizes a combination of water-swellable waterstop strips, semi-water-stopping steel plates, a serrated interface cut into the existing structure, and channel steel. This allows for more precise positioning of the previously single water-swellable waterstop strip for waterproofing, while simultaneously controlling the compressive stress on the newly added structure before it has fully developed its strength, thus significantly increasing its service life and waterproofing capability. Attached Figure Description

[0014] Figure 1 This is a first installation diagram of the present invention;

[0015] Figure 2 This is the first perspective view of the present utility model;

[0016] Figure 3 This is the second perspective view of the present invention.

[0017] In the diagram: 1 Existing building, 2 Waterstop strip, 3 Reinforcing steel bar, 4 Newly cast structure, 5 Semi-waterstop steel plate, 6 Channel steel, 7 Existing structure with serrated groove interface. Detailed Implementation

[0018] 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.

[0019] This utility model embodiment provides a waterproof component for the renovation of the underground structure of existing buildings, such as... Figure 1-3 As shown, it is installed between the existing building 1 and the newly cast structure 4. It includes a waterstop strip 2, a semi-water-stopping steel plate 5, a serrated interface 7 cut into the existing structure, and a channel steel 6. The serrated interface 7 is installed on the existing building 1 and is connected to the waterstop strip 2. The channel steel 6 is adapted to and completely covers the waterstop strip 2, and the semi-water-stopping steel plate 5 is located on the outside of the channel steel 6. The semi-water-stopping steel plate 5 is located inside the newly cast structure 4.

[0020] It also includes reinforcing steel bars 3, which are placed between the newly cast structure 4 and the existing building 1.

[0021] The reinforcing steel bar 3 is connected to the bottom of the semi-cutoff water-resistant steel plate 5, and the reinforcing steel bar 3 is connected to the channel steel 6.

[0022] Working Principle: First, using cutting and grinding machinery, the uneven surface of the existing base slab is smoothed. Then, at the midpoint of the basement base slab's structural thickness, a multi-layer cutting power tool is used to cut one or more grooves as needed. The cut concrete pieces are broken, creating a serrated shape inside the grooves to increase the length of the water-stop bend return path. Next, the newly added structural piles, foundations, and related lower-layer reinforcing steel bars of the base slab are constructed. The waterstop strip is then installed into the multiple grooves cut into the existing base slab, with the channel steel 6 completely wrapped around the outside of the waterstop strip. Then, the channel steel 6, the semi-water-stopping steel plate 5, and the structural reinforcement are horizontally, longitudinally, and diagonally welded and fixed. Finally, the waterproofing components are welded and fixed to the upper-layer reinforcing steel bars of the basement base slab, foundation, and other structural components on the base slab surface.

[0023] In summary, this waterproofing component for the renovation of existing building underground structures utilizes the interplay of a waterstop strip 2, a semi-water-stopping steel plate 5, a serrated interface 7 cut into the existing structure, and a channel steel 6. This design further strengthens the waterproofing mechanism of the previously single waterstop strip 2, while also providing additional protection for the originally soft waterstop strip 2. This significantly increases its service life and waterproofing capability.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof component for the renovation of the underground structure of an existing building, installed between the existing building (1) and the newly cast structure (4), characterized in that: It includes a waterstop strip (2), a semi-waterstop steel plate (5), an existing structure groove sawtooth interface (7), and a channel steel (6). The existing structure groove sawtooth interface (7) is set on the existing building (1). The existing structure groove sawtooth interface (7) is connected to the waterstop strip (2). The channel steel (6) is adapted to and completely covers the waterstop strip (2). The semi-waterstop steel plate (5) is set on the outside of the channel steel (6). The semi-waterstop steel plate (5) is located inside the newly cast structure (4).

2. The waterproof component for the renovation of underground structures of existing buildings according to claim 1, characterized in that: It also includes reinforcing steel bars (3), which are placed between the newly cast structure (4) and the existing building (1).

3. A waterproof component for the renovation of underground structures of existing buildings according to claim 2, characterized in that: The reinforcing steel bar (3) is connected to the bottom of the semi-cutoff water-resistant steel plate (5), and the reinforcing steel bar (3) is connected to the channel steel (6).

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