Construction structure for waterproofing of basement exterior wall in ultra-long narrow space

Abstract

The construction structure comprises a foundation pit, supporting piles are arranged on the inner side of the foundation pit at intervals, a prefabricated waterproof body is arranged on the outer side, close to the supporting piles, of the designed construction position of a basement wall body, and the basement wall body is arranged on the side, away from the supporting piles, of the prefabricated waterproof body. The prefabricated waterproof body is of a brick structure, and a waterproof layer is laid on the inner side of the prefabricated waterproof body. According to the construction structure, the brick wall is built in advance to replace an outer wall formwork, and the waterproof coiled material is laid on the painted brick wall in advance, so that the procedure of waterproof construction after concrete outer wall pouring is omitted, and the waterproof construction cost of a narrow and small space is obviously reduced; the construction problems that the distance between the basement exterior wall and the support pile is too small, and conventional two-way formwork erecting and pasting waterproof cannot be adopted are solved, flexible waterproof closing of exterior wall waterproof can be achieved, the waterproof quality of the basement interior and exterior walls is improved, and the hidden danger of leakage is eliminated.

Description

Technical Field

[0001] The present application relates to the technical field of basement exterior wall waterproofing construction, and in particular to a construction structure for waterproofing the exterior wall of a basement in an extra-long and narrow space. Background Art

[0002] In the design of construction projects, affected by the topography of the building planning area and following the principle of maximizing land use, the outer edges of high-rise buildings and underground garages are basically close to the edge of roads or existing buildings. This severely limits the scope of foundation pit excavation, and the foundation pit support can only be pile support, resulting in the underground structure part being close to the support piles, as shown in the attached manual. Figure 1 The structure shown in the figure makes the space between the basement outer wall and the piles narrow, which makes the basement outer wall waterproofing construction inconvenient. Figure 2 as shown) or using single-sided formwork ( Figure 3 As shown in the figure, the space between the outer wall and the supporting piles is entirely poured with waterproof concrete with a waterproof effect. The traditional method will cause serious waste of waterproof concrete materials and increase construction costs.

[0003] If waterproofing is laid in a small space relying on traditional technology, it will take a lot of time and effort, the quality of waterproofing molding will be difficult to control, and the protection work of underground exterior wall waterproofing will also be difficult to carry out, resulting in a huge waste of labor, materials and machinery. Summary of the invention

[0004] In response to the above-mentioned problems, the present application aims to provide a construction structure for waterproofing the exterior wall of a basement in an ultra-long and narrow space, so as to solve the problem that the distance between the exterior wall of the basement and the supporting piles is too small, making it impossible to use conventional two-way formwork and adhesive waterproofing construction. The exterior wall waterproofing can form a flexible waterproof closure, thereby improving the waterproofing quality of the interior and exterior walls of the basement and eliminating the risk of leakage.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is as follows: a construction structure for waterproofing the exterior wall of a basement in an extra-long and narrow space, including a foundation pit, supporting piles are arranged at intervals on the inner side of the foundation pit, a basement wall is post-formed in the foundation pit inside the supporting piles, and a waterproof construction space is formed between the supporting piles and the basement wall, characterized in that: before the basement wall is formed, a prefabricated waterproof body is arranged on the outer side of the supporting piles at the designed construction position of the basement wall, and the basement wall is arranged on the side of the prefabricated waterproof body away from the supporting piles.

[0006] Preferably, the prefabricated waterproof body is a brick structure, and a waterproof layer is applied on the inner side thereof.

[0007] Preferably, a tie rod connected to the prefabricated waterproof body is provided on the supporting pile.

[0008] Preferably, tension arc plates are attached to adjacent supporting piles, and the tie rods are detachably connected to the tension arc plates.

[0009] The beneficial effects of the present application are as follows: the construction structure is to build brick walls in advance to replace the exterior wall formwork, and to lay the waterproof membrane in advance on the painted brick wall, thereby eliminating the process of waterproofing after pouring the concrete exterior wall, and significantly reducing the cost of waterproofing construction in a small space. Through the brick wall, the exterior wall waterproof membrane is pre-laid before pouring the exterior wall concrete, thereby solving the problem that the distance between the exterior wall of the basement and the supporting piles is too small, and the conventional two-way formwork and adhesive waterproofing construction cannot be used. The exterior wall waterproofing can form a flexible waterproof closure, thereby improving the waterproofing quality of the interior and exterior walls of the basement and eliminating the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural diagram showing the current location of the basement walls and support piles in the foundation pit.

[0011] Figure 2 Illustration of laying waterproof membrane on the outer wall of the formed basement wall.

[0012] Figure 3 Illustration of pouring waterproof concrete on the outside of the formed basement wall.

[0013] Figure 4 For this application, prefabricated waterproofing body is formed before pouring the basement wall.

[0014] Figure 5 For this application Figure 4 A waterproof layer is laid on the inner wall of the formed prefabricated waterproof body.

[0015] Figure 6 For this application Figure 5 The basement wall is cast inside the laid waterproof layer.

[0016] Figure 7 For this application, tie rods are provided to tie the support piles to the prefabricated waterproof body as shown in the diagram.

[0017] Figure 8 This is a diagram showing the assembly of the curved plate and tie rod for this application.

[0018] Fig. 9 This is a diagram showing the connection between the curved plates and tie rods and the prefabricated waterproof body for this application.

[0019] In the figure: 8- Waterproof concrete. DETAILED DESCRIPTION

[0020] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0021] See attached Figures 1 to 9 The structure shown is a construction structure for waterproofing the outer wall of a basement in an extra-long and narrow space, comprising a foundation pit 1, support piles 2 are arranged at intervals inside the foundation pit 1, a basement wall 3 is formed inside the foundation pit 1 inside the support piles 2, and a waterproof construction space a is formed between the support piles 2 and the basement wall 3. During construction, Figure 1 As shown, a foundation pit 1 is excavated first, and then support piles 2 are arranged at an interval in the inner side of the foundation pit to form a pile row structure as a whole. Then the traditional construction method is to set up a formwork and cast the basement wall 3. After the wall is formed, waterproof construction is carried out on the outer wall in the narrow and extra-long waterproof construction space a formed by the support piles 2 on the outer side of the wall. The traditional construction method is to lay a waterproof layer on the outer wall in a narrow space; or to set up a formwork and cast waterproof concrete.

[0022] In order to solve the current problems that it is difficult to lay a waterproof layer manually in a small space (waterproof construction space a), and that it takes a long time and is difficult to set up a formwork to cast waterproof concrete, the present application provides a construction structure, which is before the basement wall 3 is formed, that is, after the foundation pit 1 is excavated and the support piles 2 are constructed, such as Figure 4 As shown, a prefabricated waterproof body 4 is arranged at the outer side of the designed construction position of the basement wall 3 and close to the support pile 2, and the basement wall 3 is arranged on the side of the prefabricated waterproof body 4 away from the support pile 2. That is, before the construction of the basement wall 3, the prefabricated waterproof body 4 is constructed and formed in a larger space in the foundation pit 1, which has better construction convenience compared to the construction in a narrow space at a later time, and can effectively improve the construction efficiency. After the construction of the prefabricated waterproof body 4 is completed, the construction of the basement wall 3 is carried out, and the prefabricated waterproof body 4 is used as the waterproof layer of the basement wall 3 to achieve the waterproof effect on the basement wall 3. At the same time, the prefabricated waterproof body 4 can also be used as the external wall template for casting the basement wall 3.

[0023] Specifically, Figure 4-6 As shown, the prefabricated waterproof body 4 is a brick structure, which can save the formwork erection process compared to pouring concrete walls and improve construction efficiency. After the construction of the prefabricated waterproof body 4 of the brick structure is completed, the brick wall is painted and the wall surface is ensured to be flat. After the brick wall surface is painted and solidified, the surface is cleaned. After cleaning, a waterproof layer 5 (such as waterproof membrane) is laid on the inner side of the wall. After the waterproof membrane is laid, the basement wall 3 inner formwork is supported, and concrete is poured to form the basement wall 3, that is, the waterproof construction of the basement wall 3 is quickly completed.

[0024] In order to improve the supporting strength of the prefabricated waterproof body 4 as the external formwork when pouring the basement wall 3 in the later stage, Figure 7As shown, a tie rod 6 connected to the prefabricated waterproof body 4 is provided on the support pile 2. During the molding process of the prefabricated waterproof body 4, the prefabricated waterproof body 4 can be supported by connecting with the tie rod 6, ensuring that the waterproof layer 5 laid on the inner side can be closely attached to the basement wall 3 to achieve a waterproof effect, and at the same time, the stability of the support is ensured when it is used as an external formwork when pouring the basement wall 3.

[0025] To facilitate the connection and assembly of the tie rod 6 and the support pile 2, Figure 8-9 As shown, a tension arc plate 7 is attached to the adjacent support piles 2, and the tie rod 6 is detachably connected to the tension arc plate 7. Preferably, the vertical width of the tension arc plate 7 after transfer is smaller than the spacing between the adjacent support piles 2, that is, during assembly, the tension arc plate 7 is rotated to a vertical state and can be passed between the adjacent support piles 2 to the back side, and then rotated to a horizontal state and attached to the adjacent support piles 2, and then the tie rod 6 is passed through the inner and outer support piles 2, and nuts are used to tighten and assemble the tension arc plate 7 and the tie rod 6 (preferably a screw rod structure) on the support pile 2 to achieve a stable assembly of the tie rod 6. Preferably, when the brick mold wall is built, a reinforced concrete structural column is set every 5m to stabilize the wall.

[0026] The construction mechanism is preferably suitable for a narrow foundation pit with a distance of 40 cm or less between the basement wall 3 and the supporting piles 2, a height of 5.5 m, and a length of more than 100 m.

[0027] The principle of this application is: after the pile row (support pile 2) is completed, the layout position is located according to the basement wall 3, and a brick wall is built at the edge of the basement outer wall skin as the outer formwork of the basement outer wall. The built brick wall is painted and the wall surface is ensured to be flat. After the brick wall surface is painted and solidified, the surface is cleaned and waterproof membrane is laid on the brick wall paint layer. After the waterproof membrane is laid, protective measures are taken and the steel bars of the basement outer wall are tied. After the steel bar plates are tied, the inner formwork of the basement outer wall is supported and concrete is poured, that is, the waterproof construction of the basement wall 3 is completed, solving the construction difficulty of completing more processes in a limited space.

[0028] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. A construction structure for waterproofing the outer wall of a basement in an extra-long narrow space, comprising a foundation pit (1), support piles (2) are arranged at intervals inside the foundation pit (1), a basement wall (3) is post-formed in the foundation pit (1) inside the support piles (2), and a waterproof construction space (a) is formed between the support piles (2) and the basement wall (3), characterized in that: Before the basement wall (3) is formed, a prefabricated waterproof body (4) is arranged at the design construction position of the basement wall (3) and on the outer side close to the supporting piles (2), and the basement wall (3) is arranged on the side of the prefabricated waterproof body (4) away from the supporting piles (2).

2. The construction structure according to claim 1, characterized in that: The prefabricated waterproof body (4) is a brick structure, and a waterproof layer (5) is applied on the inner side thereof.

3. The construction structure according to claim 2, characterized in that: A tie rod (6) connected to the prefabricated waterproof body (4) is provided on the support pile (2).

4. The construction structure according to claim 3, characterized in that: A tension arc plate (7) is attached to the adjacent support piles (2), and the tie rod (6) is detachably connected to the tension arc plate (7).

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