Waterproof structure of foundation pit supporting stand column

Abstract

The utility model discloses a waterproof structure of a foundation pit supporting stand column, which comprises a bottom plate, and a latticed column is arranged on the bottom plate. A sinking platform is arranged on the bottom surface of the sinking groove, the latticed column is arranged at the geometric center position of the top surface of the sinking groove and penetrates through the sinking platform, a waterproof strip is further arranged on the top surface of the sinking platform, the waterproof strip is arranged on the side of the latticed column, a water stop steel plate is arranged on the side, close to the latticed column, of the sinking groove, and the sinking groove is filled with an expansion layer; the sinking grooves are formed in the periphery of the latticed column, it can be guaranteed that the bottom plate sinks, after the bottom plate sinks, after the latticed column is cut off, cement is poured, the joint between the edge of the latticed column and the bottom plate can be completely sealed, and when water is immersed and spreads, the cement spreads outwards along the secondarily-poured joint; and the arranged waterproof strip and the water stop steel plate can achieve two water stop effects, so that the water leakage condition is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field, and more specifically, to a waterproof structure of a foundation pit supporting column. Background Art

[0002] As a structural system, foundation pit support should meet the requirements of stability and deformation, that is, the requirements of the two limit states mentioned in the general specifications, namely the bearing capacity limit state and the normal use limit state.

[0003] Usually the project is multi-story underground with a high groundwater level. The support form adopts supporting piles + two reinforced concrete supports. The foundation pit support adopts 20 column piles. The column piles are a combination of lattice steel columns and cast-in-place piles. Steel lattice columns are used above the foundation pit surface, and φ900mm cast-in-place piles are used below the foundation pit surface.

[0004] During the construction of the basement floor, the bottom of the lattice column needs to be wrapped with the floor concrete. The traditional waterproofing method for this node is to set a waterstop steel plate where the lattice column passes through the basement floor. After the foundation pit support is removed, the lattice column is cut and recovered along the floor surface. The existing method has a great risk of water seepage, and the flatness of the cut surface of the lattice column cannot be guaranteed. The cut surface is usually higher than the floor surface, affecting the overall appearance of the ground and the construction of the basement floor decorative surface layer. Utility Model Content

[0005] The utility model aims to provide a waterproof structure of foundation pit supporting columns, which is a foundation pit structure that can effectively waterproof after the lattice columns are cut.

[0006] The above technical purpose of the utility model is achieved through the following technical scheme: a waterproof structure of a foundation pit supporting column, comprising a bottom plate, on which lattice columns are arranged.

[0007] A sinking platform is arranged on the bottom surface of the sinking trough, the lattice column is arranged at the geometric center position of the top surface of the sinking trough and passes through the sinking platform, a waterproof strip is also arranged on the top surface of the sinking platform, the waterproof strip is arranged on the side of the lattice column, a water-stop steel plate is arranged on the side of the sinking trough close to the lattice column, and an expansion layer is filled in the sinking trough.

[0008] The bottom plate ribs are embedded in the bottom plate and partially extend into the sinking groove. Part of the bottom plate ribs extend from the bottom plate in a horizontal direction into the sinking groove. Part of the bottom plate ribs extend from the bottom surface of the bottom plate in a vertical direction into the sinking platform. The sinking platform is provided with a number of oblique-pull ribs, which are evenly distributed in the sinking platform.

[0009] By setting sinking grooves around the lattice columns, the bottom plate position can be ensured to sink. After the bottom plate position sinks, when the lattice columns are cut off, pouring cement can completely seal the joints between the edges of the lattice columns and the bottom plate. When water spreads, it spreads outward along the joints of the secondary pouring. The waterproof strips and water-stop steel plates set up can form two kinds of water-stopping effects, thereby preventing water leakage.

[0010] The utility model is further configured as follows: the waterproof strip is an annular structure, at least partially embedded in the top surface of the sinking platform, and the waterproof strip is arranged around the circumference of the lattice column.

[0011] The first layer of waterproofing can be achieved through the ring-shaped waterproof strip, which blocks water and increases the difficulty of water passing through.

[0012] The utility model is further configured such that: the waterproof strip is at least 200 mm away from the outer side wall of the lattice column.

[0013] The arrangement of lattice columns spaced apart by waterproof strips can first be waterproofed by pouring, and burying the waterproof strips in the pouring gaps can have a good water blocking effect.

[0014] The utility model is further configured as follows: the waterstop steel plate is annular in structure, the waterstop steel plate is at least partially embedded in the inner wall of the sinking trough, and the waterstop steel plate includes a horizontal portion and inclined surfaces arranged on both sides of the horizontal portion.

[0015] If the water stop strip is penetrated by the infiltration water, the water that penetrates the water stop strip will be intercepted by the water stop steel plate arranged on the inner wall of the sinking trough.

[0016] The utility model is further configured as follows: the width of the water stop steel plate is at least 200 mm, the two inclined surfaces on both sides of the horizontal portion are located on the same side of the horizontal portion, and the two inclined surfaces are symmetrically arranged, and the inclined surfaces are arranged at an angle to the horizontal portion.

[0017] One side of the waterstop steel plate overlaps the gap between the first pouring and the second construction, which can completely cover the pouring gap and thus form a waterstop effect.

[0018] The utility model is further configured as follows: the oblique-stayed reinforcement is a Z-shaped structure, one end of which is close to the bottom plate is pre-buried in the bottom plate, and one end of which is close to the sinking platform is pre-buried in the sinking platform.

[0019] The base plate can be reinforced by setting up oblique reinforcement to prevent cracking.

[0020] In summary, the utility model has the following beneficial effects: by arranging sinking grooves around the lattice columns, the bottom plate position can be ensured to sink, and after the bottom plate position sinks, when the lattice columns are cut off, pouring cement can completely seal the joints between the edge of the lattice columns and the bottom plate, and when water spreads, it spreads outward along the joints of the secondary pouring, and the arranged waterproof strips and water-stop steel plates can form a water-stopping effect in two situations, thereby preventing water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram in an embodiment of the utility model.

[0022] In the figure:

[0023] 1. Sinking trough; 2. Sinking platform; 3. Waterstop strip; 4. Bottom plate reinforcement; 5. Diagonal reinforcement; 6. Waterstop steel plate; 7. Lattice column. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] It should be noted that if the terms "first", "second", etc. are involved in the specification and claims of the utility model and the above-mentioned drawings, they are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described here. In addition, if the terms "including" and "having" and any of their variations are involved, it is intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] In addition, in the present invention, the terms "installation", "setting", "provided with", "connection", "connected", "socketing" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] The following is combined with Figure 1 The utility model is described in further detail.

[0029] Example

[0030] like Figure 1 As shown, a waterproof structure of foundation pit supporting columns includes a bottom plate, on which lattice columns 7 are arranged.

[0031] The bottom surface of the sinking trough 1 is provided with a sinking platform 2, the lattice column 7 is arranged at the geometric center position of the top surface of the sinking trough 1 and passes through the sinking platform 2, and the top surface of the sinking platform 2 is also provided with a waterproof strip, which is arranged on the side of the lattice column 7. A water-stop steel plate 6 is arranged on the side of the sinking trough 1 close to the lattice column 7, and an expansion layer is filled in the sinking trough 1.

[0032] The bottom plate ribs 4 are pre-embedded in the bottom plate, and part of them extend into the sinking groove 1. Part of the bottom plate ribs 4 extend from the bottom plate horizontally into the sinking groove 1, and part of the bottom plate ribs 4 extend from the bottom plate vertically to the sinking platform 2. The sinking platform 2 is provided with a plurality of inclined ribs 5, and the plurality of inclined ribs 5 are evenly distributed in the sinking platform 2. By providing the sinking groove 1 around the lattice column 7, it is possible to ensure that the bottom plate position sinks. After the bottom plate position sinks, when the lattice column 7 is cut off, the pouring cement can completely close the joint between the edge of the lattice column 7 and the bottom plate. When water spreads, it spreads outward along the joint of the secondary pouring. The waterproof strips and water-stopping steel plates 6 provided can form two kinds of water-stopping effects, thereby preventing water leakage.

[0033] The waterproof strip is an annular structure, at least partially embedded in the top surface of the sinking platform 2, and is arranged around the circumference of the lattice column 7; the waterproof strip with an annular structure can achieve the first layer of waterproofing, blocking water and increasing the difficulty of water passing through.

[0034] The waterproof strip is at least 200 mm away from the outer wall of the lattice column 7; the lattice columns 7 are arranged with waterproof strips at intervals, so that waterproofing can be first performed by pouring, and burying the waterproof strips in the pouring gap position can have a good water blocking effect.

[0035] The waterstop steel plate 6 is annular in structure and is at least partially embedded in the inner wall of the sinking trough 1. The waterstop steel plate 6 includes a horizontal portion and inclined surfaces arranged on both sides of the horizontal portion. If the waterstop strip 3 is broken through by the infiltrating water, the waterstop steel plate 6 arranged on the inner wall of the sinking trough 1 will intercept the infiltrating water that breaks through the waterstop strip 3.

[0036] The width of the waterstop steel plate 6 is at least 200 mm, the two inclined surfaces on both sides of the horizontal part are located on the same side of the horizontal part, and the two inclined surfaces are symmetrically arranged, and the inclined surfaces are arranged at an angle to the horizontal part; one side of the waterstop steel plate 6 overlaps the gap between the first pouring and the second construction, and can completely cover the pouring gap, thereby forming a waterstop effect.

[0037] The oblique-tensioned reinforcement 5 is a Z-shaped structure, and its end close to the bottom plate is embedded in the bottom plate, and its end close to the sinking platform 2 is embedded in the sinking platform 2; through the arrangement of the oblique-tensioned reinforcement 5, the bottom plate can be reinforced to prevent cracking and the like.

[0038] In this embodiment, secondary binding steel bars are provided at the position of the second pouring, and reserved broken bars are provided on the original first pouring bottom plate.

[0039] During pouring: first, when pouring the bottom plate, a sinking trough 1 with a depth of 400mm is reserved through a fish scale net, and a water-stop steel plate 6 is embedded on the inner wall of the sinking trough 1. The inner wall of the sinking trough 1 and the outer wall of the lattice column 7 are spaced 600mm apart. When the first pouring is completed and the lattice column 7 is removed, first clean the joints of the lattice column 7 and roughen them. Then, set the first layer of waterproofing around the lattice column 7, i.e., a waterproof strip. Then, carry out the second pouring. During the second pouring, fill the sinking trough 1.

[0040] Overflow route: The overflow water flows from the joint between the lattice column 7 and the first pouring, passes through the unsealing of the first pouring and the second pouring, encounters the water stop strip 3 for the first layer of protection, and after breaking through the water stop strip 3, continues to spread along the joint between the first pouring and the second pouring to encounter the second layer of waterproofing, that is, the water stop steel plate 6, which greatly increases the waterproof effect.

[0041] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0042] In addition, the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the utility model, and these solutions also belong to the disclosure scope of the utility model and fall within the protection scope of the utility model. Those skilled in the art should understand that the utility model specification and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope of the utility model is defined by the claims and their equivalents.

Claims

1. A waterproof structure of a foundation pit support column, comprising a bottom plate, on which a lattice column (7) is arranged, characterized in that: A sinking trough (1), wherein a sinking platform (2) is arranged on the bottom surface of the sinking trough (1), the lattice column (7) is arranged at the geometric center position of the top surface of the sinking trough (1) and passes through the sinking platform (2), the top surface of the sinking platform (2) is also provided with a waterproof strip, and the waterproof strip is arranged on the side of the lattice column (7), a water-stop steel plate (6) is arranged on the side of the sinking trough (1) close to the lattice column (7), and the sinking trough (1) is filled with an expansion layer; The bottom plate ribs (4) are pre-embedded in the bottom plate and partially extend into the sinking groove (1). Part of the bottom plate ribs (4) extend from the bottom plate in a horizontal direction into the sinking groove (1). Part of the bottom plate ribs (4) extend from the bottom plate in a vertical direction to the bottom surface of the bottom plate into the sinking platform (2). The sinking platform (2) is provided with a plurality of inclined ribs (5), and the plurality of inclined ribs (5) are evenly distributed in the sinking platform (2).

2. The waterproof structure of the foundation pit support column according to claim 1, characterized in that: The waterproof strip is an annular structure and is at least partially embedded in the top surface of the sinking platform (2). The waterproof strip is arranged around the circumference of the lattice column (7).

3. The waterproof structure of the foundation pit support column according to claim 2 is characterized by: The waterproof strip is at least 200 mm away from the outer side wall of the lattice column (7).

4. The waterproof structure of the foundation pit support column according to claim 1, characterized in that: The waterstop steel plate (6) is annular in structure, and is at least partially embedded in the inner wall of the sinking trough (1). The waterstop steel plate (6) comprises a horizontal portion and inclined surfaces arranged on both sides of the horizontal portion.

5. The waterproof structure of the foundation pit support column according to claim 4, characterized in that: The width of the water stop steel plate (6) is at least 200 mm, the two inclined surfaces on both sides of the horizontal portion are located on the same side of the horizontal portion, and the two inclined surfaces are symmetrically arranged, and the inclined surfaces are arranged at an angle with the horizontal portion.

6. The waterproof structure of the foundation pit support column according to claim 1, characterized in that: The obliquely-stretched ribs (5) are of a Z-shaped structure, one end of which is close to the bottom plate is pre-buried in the bottom plate, and the other end of which is close to the sinking platform (2) is pre-buried in the sinking platform (2).

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