Supporting steel plate water stop device for retreating method construction

Abstract

The utility model relates to the field of concrete pouring, in particular to a retreating method construction support steel plate water stop device which comprises a pre-pouring structure, a post-pouring structure, a steel plate pile group, a parting plate, a stratum and a steel plate, the parting plate is arranged between the pre-pouring structure and the post-pouring structure, and the steel plate piles are connected into the steel plate pile group in an inserted mode and inserted into the stratum. Gaps at the inserting positions of the steel sheet pile sets are filled with filling grout, the steel sheet pile sets and the parting plates are perpendicularly arranged between the pre-pouring structure and the post-pouring structure, the two sides of the bottoms of the steel sheet pile sets are connected with steel plates in a welded mode, and the bottoms of the steel sheet piles and the outer sides of the steel plates are wrapped with waterproof geotechnical cloth. The mode that the steel sheet piles and the pouring structures are combined into a whole guarantees seepage prevention and integrity of the front pouring structure and the rear pouring structure, meanwhile, it is guaranteed that the structure poured firstly and the steel sheet piles can form integral protection, a structure weak area caused by pulling out of the steel sheet piles of an existing structure is avoided, and the follow-up waterproof effect is good.

Description

Technical Field

[0001] The utility model relates to the field of concrete pouring, in particular to a water-stopping device for supporting steel plates in a retreat construction method. Background Art

[0002] Steel sheet piles are a type of steel structure with a linkage device on the edge, and this linkage device can be freely combined to form a continuous and tight steel structure with good waterproof performance. They are widely used in retaining walls or water retaining walls.

[0003] In the prior art, the water-stopping and foundation pit support of the cast structure are set separately. The successive casting of different parts requires the support of the foundation pit again. Therefore, the use of steel sheet piles can solve the problems of water-stopping and support at the same time. If the steel sheet piles are pulled out after use, weak points will be formed at the places where the casting is carried out successively, causing hidden dangers, and the areas where the casting is carried out successively and their adjacent areas will form permeable areas, affecting the waterproof effect.

[0004] Therefore, there is an urgent need to provide a water-stopping device for supporting steel plates by the retreat method of construction. Compared with the existing technology, it can solve the problem that the steel sheet piles need to be pulled out after use, resulting in a weak structure, and has a good subsequent waterproofing effect. Utility Model Content

[0005] In order to overcome the problems existing in the prior art, the utility model aims to provide a water-stopping device for supporting steel plates in a backward construction method.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel plate water-stopping device for supporting construction by the retreat method, comprising a first cast structure, a post-cast structure, a steel sheet pile group, a split plate, a stratum and a steel plate, wherein the split plate is arranged between the first cast structure and the post-cast structure, and a plurality of steel sheet piles are plug-connected to form the steel sheet pile group, which is inserted into the stratum; the gaps at the plug-in locations of the steel sheet pile group are filled with filling grouting, the steel sheet pile group and the split plate are vertically arranged between the first cast structure and the post-cast structure, the two sides of the bottom of the steel sheet pile group are welded to the steel plate, and the bottom of the steel sheet pile group and the outer side of the steel plate are wrapped with a waterproof geotextile.

[0007] The utility model is further configured as follows: the steel plate has two layers, including an upper steel plate and a lower steel plate, the upper steel plate and the lower steel plate are arranged in parallel, and the upper surface of the upper steel plate is connected to the split plate. The lower steel plate is arranged about 10 cm above the stratum, and the upper steel plate is arranged at the bottom of the split plate to horizontally support the split plate.

[0008] The utility model is further configured as follows: the retreat method construction support steel plate water-stopping device also includes a fine sand concrete layer, the fine sand concrete layer is arranged between the joint plate and the stratum surface, and the steel plate is contained in the fine sand concrete layer.

[0009] The utility model is further configured as follows: the retreat method construction support steel plate water-stopping device also includes a drainage pipe, the drainage pipe is arranged perpendicular to the steel sheet pile group and between the stratum surface and the fine sand concrete layer, the drainage pipe is arranged on both sides of the steel sheet pile group, and a sand and gravel layer is filled between the drainage pipe and the fine sand concrete layer and the steel sheet pile group.

[0010] The utility model is further configured as follows: the lower steel plate is in contact with the sand and gravel layer.

[0011] The utility model is further configured as follows: the drainage pipe comprises a first port extending out of the sand and gravel layer away from the steel sheet pile group and a second port close to the steel sheet pile group and covered by the sand and gravel layer.

[0012] The utility model is further configured as follows: the waterproof geotextile starts from the connection between the upper part of the upper steel plate and the steel sheet pile group, extends downward in a manner of wrapping the steel plate and the outer surface of the steel sheet pile group passing through, and after covering the lower surface of the lower steel plate, continues to extend along the steel sheet pile group to the ground surface, and extends along the ground surface until wrapping the second port.

[0013] The utility model is further configured as follows: a grouting area is arranged around the portion where the steel sheet pile group is inserted into the stratum.

[0014] In summary, the beneficial effects of the above technical solution of the utility model are as follows:

[0015] (1) The utility model ensures the anti-seepage and integrity of the front and rear cast structures by combining the steel sheet piles with the cast structure as a whole, while ensuring that the first cast structure and the steel sheet piles can form an integral protection, avoiding the structural weak area caused by removing the steel sheet piles.

[0016] (2) The utility model simplifies the later construction by utilizing the steel plates of the previously cast structure and the newly installed steel plates as the water-stopping structure, and strengthens the anti-seepage ability of the structure by arranging the waterproof geotextile and the drainage pipe in a specific manner. The setting of the double-layer steel plate also prolongs the seepage length.

[0017] (3) The utility model forms a hidden ditch through the gravel layer and the drainage pipe to quickly drain the water from the structural joints, ensuring that the steel bars are not easily corroded, and at the same time uses fine stone concrete to form a second waterproof system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic top view of the structure of the utility model.

[0020] Figure 2 This is a structural schematic diagram of the installation location of the steel sheet pile group of the utility model.

[0021] Figure 3 It is a schematic diagram of a left-side cross-sectional view of the structure of the utility model.

[0022] Figure 4 It is a schematic diagram of a cross-sectional view of a steel sheet pile group of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Post-cast structure; 2. Joint plate; 3. First port; 4. Pre-cast structure; 5. Steel sheet pile group; 6. Steel plate; 7. Second port; 8. Fine sand concrete layer; 9. Sand and gravel layer; 10. Grouting area; 11. Waterproof geotextile; 12. Filling grouting; 13. Drain pipe; 15. Stratum. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following is a clear and complete description of the technical solution of the present invention in conjunction with the drawings of the present invention. Based on the embodiments of the present invention, other similar embodiments obtained by ordinary technicians in the field without creative work should all fall within the scope of protection of the present invention. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the creation of the present invention.

[0026] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, it is a preferred embodiment of the utility model, a steel plate water-stopping device for supporting construction by the retreat method, comprising a first cast structure 4, a post-cast structure 1, a steel sheet pile group 5, a split plate 2, a stratum 15 and a steel plate 6, the split plate 2 is arranged between the first cast structure 4 and the post-cast structure 1, the steel sheet pile group 5 is composed of steel sheet piles plug-in connection, and is inserted into the stratum 15, the gap at the plug-in joint of the steel sheet pile group 5 is filled with filling grouting 12, the steel sheet pile group 5 and the split plate 2 are vertically arranged between the first cast structure 4 and the post-cast structure 1, the two sides of the bottom of the steel sheet pile group 5 are welded to the steel plate 6, and the bottom of the steel sheet pile group 5 and the outer side of the steel plate 6 are wrapped with a waterproof geotextile 11; the steel plate 6 has two layers, including an upper steel plate and a lower steel plate, the upper steel plate and the lower steel plate are arranged in parallel, and the upper surface of the upper steel plate is connected to the split plate 2.

[0028] The utility model also includes a fine sand concrete layer 8, which is arranged between the split plate 2 and the surface of the stratum 15, and the steel plate 6 is contained in the fine sand concrete layer 8; the utility model also includes a drainage pipe 13, which is perpendicular to the steel sheet pile group 5 and is arranged on the surface of the stratum 15. The drainage pipe 13 is broken into two sections on both sides of the steel sheet pile group 5, and a sand and gravel layer 9 is arranged outside the drainage pipe, and the fine sand concrete layer 8 is outside the sand and gravel layer 9. The lower steel plate of the two steel plates 6 is arranged on the upper part of the gravel layer 9; the drainage pipe 13 includes a first port 3 extending out of the gravel layer away from the steel sheet piles and a second port 7 close to the steel sheet piles and covered by the gravel layer; the waterproof geotextile 11 starts from the connection between the upper part of the upper steel plate and the steel sheet pile group 5, extends downward in a manner of wrapping the steel plate 6 and the outer surface of the steel sheet pile group 5 passing through, and continues to extend along the steel sheet pile group 5 to the surface of the stratum 15 after covering the lower surface of the lower steel plate, and extends along the surface of the stratum 15 and wraps the second port 7; a grouting area 10 is arranged around the part of the steel sheet pile group 5 inserted into the stratum 15.

[0029] During the installation of the steel plate water stop device for the retreat method, Figure 1-Figure 4 As shown, grouting is first performed on the grouting area 10 around the reserved steel sheet pile group 5, and a blind ditch is dug at the connection of the bottom layer 15, the gravel layer 9 is backfilled and a drainage pipe 13 is set, and the drainage pipe 13 is sealed with a waterproof geotextile 11, and then the lower steel plate is welded, the waterproof geotextile 13 is laid, and the fine sand concrete layer 8 is poured. Then the upper steel plate is completed by hydraulic engineering, and the first cast structure 4 is cast and then the split plate 2 is laid. The split plate 2 can prevent deformation caused by excessive heat of concrete hydration, and it is also the location of the construction joint; the split plate 2 is fixed with the concrete of the completed first cast structure 4 and the steel bars of the later cast structure 1; then the later cast structure 1 is cast, and finally the gap of the steel sheet pile group 5 is grouting.

[0030] When the utility model is used, the structure 4 is cast first, and the structure 1 is cast later. The split plate 2 and the steel sheet pile group 5 are cast as a whole, which ensures the stability of the structure. The water-proof property is further improved by injecting filling grouting 12 into the gap at the connection of the steel sheet pile group 5. The arrangement of the steel plate 6 and the waterproof geotextile 11 further extends the seepage length. When the structure leaks water, the drainage ditch system composed of the fine sand concrete layer 8, the sand and gravel layer 9 and the waterproof geotextile 11 can quickly discharge the infiltrated water from the drainage pipe 13 to avoid corrosion of easily corroded parts such as steel bars.

[0031] In summary, the utility model provides a water-stopping device for supporting steel plates in the construction by the backward method, which can improve the problem in the prior art that when the steel sheet piles are pulled out after being cast, weak points will be formed at the places where they are cast first and then, causing hidden dangers, and the areas where they are cast first and then and their adjacent areas will form permeable areas, affecting the waterproof effect.

[0032] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A steel plate water-stopping device for construction support by retreat method, comprising a first pouring structure, a post pouring structure, a steel sheet pile, a split plate, a stratum and a steel plate, wherein the split plate is arranged between the first pouring structure and the post pouring structure, and a plurality of steel sheet piles are plug-connected to form a steel sheet pile group, which is inserted into the stratum; characterized in that: The gaps at the joints of the steel sheet pile groups are filled by grouting, the steel sheet pile groups and the split plates are vertically arranged between the first cast structure and the post-cast structure, the two sides of the bottom of the steel sheet pile group are welded to the steel plate, and the bottom of the steel sheet pile group and the outer side of the steel plate are wrapped with waterproof geotextile.

2. The water-stopping device for supporting steel plates in the retreat method construction according to claim 1 is characterized in that: The steel plate has two layers, including an upper steel plate and a lower steel plate. The upper steel plate and the lower steel plate are arranged in parallel, and the upper surface of the upper steel plate is connected to the split plate.

3. The water-stopping device for supporting steel plates in the retreat method construction according to claim 2 is characterized in that: The steel plate water-stopping device constructed by the retreat method also includes a fine sand concrete layer, which is arranged between the split plate and the stratum surface, and the steel plate is contained in the fine sand concrete layer.

4. The water-stopping device for supporting steel plates in the retreat method construction according to claim 3 is characterized in that: The backward construction method support steel plate water-stopping device also includes a drainage pipe, which is arranged perpendicular to the steel sheet pile group and between the stratum surface and the fine sand concrete layer. The drainage pipe is arranged on both sides of the steel sheet pile group, and a sand and gravel layer is buried between the drainage pipe and the fine sand concrete layer and the steel sheet pile group.

5. The water-stopping device for supporting steel plates in the retreat method construction according to claim 4 is characterized in that: The lower steel plate is arranged on the upper part of the sandstone layer.

6. The water-stopping device for supporting steel plates in the retreat method construction according to claim 4 is characterized in that: The drainage pipe comprises a first port extending out of the gravel layer away from the steel sheet pile group and a second port close to the steel sheet pile group and covered by the gravel layer.

7. The water-stopping device for supporting steel plates in the retreat method construction according to claim 6 is characterized in that: The waterproof geotextile starts from the connection between the upper part of the upper steel plate and the steel sheet pile group, wraps the steel plate and the outer surface of the steel sheet pile group and the ground surface along the way, until wrapping the second port.

8. The water-stopping device for supporting steel plates in the retreat method construction according to claim 1 is characterized in that: A grouting area is arranged around the portion of the steel sheet pile group inserted into the stratum.

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