Reinforcing structure between piles

Abstract

The utility model discloses an inter-pile reinforcing structure which comprises two fender posts, channel steel, a first connecting rib and a sprayed concrete layer. A plurality of steel channels are arranged between the two fender posts; the multiple pieces of channel steel are horizontally and evenly arranged in the vertical direction. The first connecting rib is n-shaped; the two ends of the channel steel are connected with the vertical main reinforcements of the two fender posts through first connecting reinforcements respectively; sprayed concrete layers are arranged on the two sides of the channel steel along the fender posts from top to bottom. According to the inter-pile reinforcing structure, an effective enclosure system is established when part of the enclosure piles are lost due to environmental factors, so that the stress of the whole enclosure structure is more balanced and reliable, and the consolidation effect of the reinforcing system and the existing soil body is also improved.

Description

Technical Field

[0001] The utility model relates to the field of building engineering construction, in particular to an inter-pile reinforcement structure. Background Art

[0002] With the continuous improvement of my country's scientific and technological level, rail transit construction and development have achieved great results. In the urban road traffic system, the application scope of subways has become more and more extensive, bringing many conveniences to people's travel. During the construction of subway lines, a large number of passengers will travel back and forth at subway stations every day. Therefore, in order to ensure the safety and comfort of passengers, it is necessary to do a good job in the construction of subway stations.

[0003] During the construction phase, subway stations are mostly constructed using open excavation (partial cover excavation) construction method. The foundation pit support system uses bored cast-in-place piles + mesh spray anchor + internal support system, and shotcrete and steel mesh are used as the primary support system between the piles in the pit. The Chinese invention patent with document number CN117552467A discloses a subway station main structure construction method based on the cover excavation reverse construction method, including the following steps: construction of enclosure structure, excavation of earth above the cover plate, construction of cushion layer, laying of formwork, erection of steel bars, pouring of cover plate concrete, excavation of the first negative layer earthwork, construction of the middle plate bracket cushion layer, tying the first negative layer side wall steel bars, tying the middle plate steel bars, pouring the middle plate concrete, excavation of the second negative layer earthwork, pouring the bottom plate cushion layer, tying the second negative layer steel bars, tying the bottom plate steel bars, pouring the bottom plate concrete, pouring the second negative layer side wall concrete, etc. The retaining structure must be constructed before the station foundation pit is excavated. However, when the construction location of the retaining pile is affected by pipelines, buildings and other structures that cannot be relocated, construction cannot be carried out. In this case, the retaining pile cannot be constructed, which affects the establishment of the station retaining system and cannot ensure the safety of the station deep foundation pit excavation construction.

[0004] In view of the problem that the above-mentioned retaining system cannot establish an effective support system due to the lack of some retaining piles due to environmental factors, it is considered to add a reinforcing structure where the retaining piles are missing, so as to establish an effective support system at the location of the missing piles to ensure construction safety and quality. Utility Model Content

[0005] The purpose of this utility model is to provide a reinforcement structure between piles to address the above shortcomings, solving the problem of how to establish an effective enclosure system when some enclosure piles are missing due to environmental factors. The force is more balanced and reliable, and the consolidation effect of the reinforcement system and the existing soil is effectively improved. To achieve the above purpose, this utility model provides the following technical solutions:

[0006] A pile - between strengthening structure includes two retaining piles, channel steels, first connecting bars and shotcrete layers; several channel steels are arranged between the two retaining piles; the several channel steels are horizontally and evenly arranged along the vertical direction; the first connecting bar is in a "ji" shape; both ends of the channel steel are respectively connected to the vertical main bars of the two retaining piles through the first connecting bars; shotcrete layers are arranged along the retaining piles from top to bottom on both sides of the channel steel.

[0007] Furthermore, several second connecting bars are arranged on the soil - facing side of the channel steel; the several second connecting bars are vertically and evenly arranged along the horizontal direction and are located between the two retaining piles; the positions where the second connecting bars cross the channel steel are connected; the second connecting bars and the channel steel form a mesh structure.

[0008] Furthermore, a steel - bar anchor is arranged above the position where the second connecting bar crosses the channel steel; the steel - bar anchor is perpendicular to both the second connecting bar and the channel steel and is connected to the channel steel; a part of the steel - bar anchor is inserted into the soil and the other part is arranged in the shotcrete layer.

[0009] Furthermore, the length of the steel - bar anchor is 1500 mm.

[0010] Furthermore, the model of the channel steel is No. 10 channel steel.

[0011] Furthermore, the first connecting bar, the second connecting bar and the steel - bar anchor are all made of φ20 steel bars.

[0012] The beneficial effects of the present utility model are:

[0013] The present utility model discloses a pile - between strengthening structure, which includes two retaining piles, channel steels, first connecting bars and shotcrete layers; several channel steels are arranged between the two retaining piles; the several channel steels are horizontally and evenly arranged along the vertical direction; the first connecting bar is in a "ji" - shaped; both ends of the channel steel are respectively connected to the vertical main bars of the two retaining piles through the first connecting bars; shotcrete layers are arranged along the retaining piles from top to bottom on both sides of the channel steel. The pile - between strengthening structure provided by the present utility model establishes an effective retaining system when some retaining piles are missing due to environmental factors, not only making the entire retaining structure more balanced and reliable in force, but also improving the consolidation effect between the reinforcement system and the existing soil mass. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three - dimensional structure schematic diagram of the present utility model, with the shotcrete layer omitted;

[0015] Figure 2 is a cross - sectional view of the present utility model;

[0016] In the drawings: 1 - retaining pile, 2 - channel steel, 3 - first connecting bar, 4 - shotcrete layer, 5 - second connecting bar, 6 - steel - bar anchor. Detailed implementation manners

[0017] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners, but the present utility model is not limited to the following embodiments.

[0018] Embodiment 1:

[0019] Appendix Figures 1-2 , a pile - between strengthening structure, comprising two retaining piles 1, channel steels 2, first connecting bars 3 and shotcrete layers 4; a plurality of channel steels 2 are arranged between the two retaining piles 1; the plurality of channel steels 2 are horizontally arranged in the vertical direction; the first connecting bars 3 are in a "U" shape; both ends of the channel steels 2 are respectively connected to the vertical main bars of the two retaining piles 1 through the first connecting bars 3; shotcrete layers 4 are arranged on both sides of the channel steels 2 along the retaining piles 1 from top to bottom. From the above structure, it can be seen that a pile - between strengthening structure includes two retaining piles 1, channel steels 2 and first connecting bars 3. Among them, the retaining piles 1 are existing. A plurality of channel steels 2 are arranged between the two retaining piles 1, and the plurality of channel steels 2 are evenly horizontally arranged at a certain interval along the retaining piles 1 from top to bottom, and the groove surface of the channel steels 2 faces the soil. Both ends of the channel steels 2 are respectively connected to the vertical main bars of the two retaining piles 1 through the first connecting bars 3. The first connecting bars 3 are in a "U" shape. First, a mechanical device is used to chisel off part of the protective layer (concrete) of the retaining pile 1 to expose the vertical main bars of the retaining pile 1. Then, the two sides of the "U" shape of the first connecting bar 3 are welded to the vertical main bars, and the weld length is preferably 10 cm. Then, the middle part of the "U" shape of the first connecting bar 3 is welded to the back - soil side of the end waist plate of the channel steel 2, and the weld length is preferably 10 cm. In this way, an effective connection is established between the retaining pile 1 and the channel steel 2 through the first connecting bar 3 to form a stress - bearing main structure. Finally, shotcrete is sprayed between the two retaining piles 1 from top to bottom to form a shotcrete layer 4. The shotcrete layer 4 wraps the channel steels 2 and the first connecting bars 3 to form an integral strengthening structure. One side of the shotcrete layer 4 is in contact with the soil, and the other side is flush with the cut surface of the two retaining piles 1. A pile - between strengthening structure of the present utility model forms a strengthening structure between the retaining piles 1 through the channel steels 2, the first connecting bars 3 and the shotcrete layers 4. When some retaining piles 1 are missing due to environmental factors, an effective retaining system can be established through the strengthening structure.

[0020] Embodiment 2:

[0021] See appendix Figures 1-2. On the basis of the first embodiment, a plurality of second connecting ribs 5 are provided on the soil-facing side of the channel steel 2; a plurality of the second connecting ribs 5 are arranged vertically in the horizontal direction and are located between the two retaining piles 1; the second connecting ribs 5 are connected at the intersection of the channel steel 2; the second connecting ribs 5 and the channel steel 2 form a mesh structure. It can be seen from the above structure that a plurality of second connecting ribs 5 are also provided between the two retaining piles 1, and a plurality of the second connecting ribs 5 are evenly arranged vertically at a certain interval in the horizontal direction and are located on the soil-facing side of the channel steel 2. The second connecting ribs 5 are welded and connected at the intersection of the channel steel 2, so that the second connecting ribs 5 connect all the channel steels 2 into a whole, and the second connecting ribs 5 and the channel steel 2 form a mesh structure, so that the reinforced structure of the utility model is more evenly and reliably stressed. Among them, the second connecting ribs 5 and the channel steel 2 are both buried in the sprayed concrete layer 4.

[0022] A steel bar anchor 6 is provided above the intersection of the second connecting bar 5 and the channel steel 2; the steel bar anchor 6 is perpendicular to the second connecting bar 5 and the channel steel 2, and is connected to the channel steel 2; a part of the steel bar anchor 6 is inserted into the soil, and the other part is arranged in the shotcrete layer 4. As can be seen from the above structure, a steel bar anchor 6 is provided above the intersection of the second connecting bar 5 and the channel steel 2, the plane where the steel bar anchor 6 is located is perpendicular to the plane formed by the second connecting bar 5 and the channel steel 2, and a part of the steel bar anchor 6 is inserted into the soil, and a part is buried in the shotcrete layer 4, and the intersection of the steel bar anchor 6 and the channel steel 2 is welded and connected. The vertical spacing between the steel bar anchors 6 is the same as the spacing between the channel steels 2, and the horizontal spacing is 500mm. The steel bar anchors 6 can be arranged in a plum blossom shape. The steel bar anchors 6 can effectively improve the consolidation effect of the reinforced structure of the utility model and the existing soil.

[0023] Embodiment three:

[0024] See attached Figures 1-2 Based on the second embodiment, the length of the steel anchor 6 is 1500 mm. As can be seen from the above structure, the length of the steel anchor 6 is 1500 mm, a part of which is inserted into the soil, and the other part is buried in the sprayed concrete layer 4.

[0025] The channel steel 2 is a No. 10 channel steel. As can be seen from the above structure, the channel steel 2 is a No. 10 channel steel, and the size of the No. 10 channel steel 2 is 100x48x5.3mm, which means that the waist height of the channel steel 2 is 100mm, the leg width is 48mm, and the thickness is 5.3mm.

[0026] The first connecting rib 3, the second connecting rib 5 and the steel bar anchor 6 all use φ20 steel bars. As can be seen from the above structure, the first connecting rib 3, the second connecting rib 5 and the steel bar anchor 6 all use φ20 steel bars, and the number φ20 refers to steel bars with a diameter of 20 mm.

[0027] The implementation principle of the inter-pile reinforcement structure of the utility model is as follows: First, mechanical equipment is used to chisel away part of the protective layer (concrete) of the two retaining piles 1 to expose the vertical main reinforcement of the retaining piles 1. The first connecting reinforcement 3 is then welded to the vertical main reinforcement of the retaining pile 1 and the channel steel 2 respectively, and the two retaining piles 1 and the channel steel 2 are effectively connected to form a load-bearing main structure. The second connecting reinforcement 5 is then welded to the channel steel 2 to connect all the channel steels 2 as a whole. A steel anchor 6 is then inserted into the soil above the intersection of the second connecting reinforcement 55 and the channel steel 22, and the steel anchor 6 is welded to the channel steel 22, which can improve the consolidation effect of the reinforced structure and the existing soil. Finally, concrete of the same specification and model as the retaining pile 1 is sprayed between the two retaining piles 1 to form an integral inter-pile reinforcement structure.

[0028] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pile reinforcement structure, comprising two retaining piles (1), a channel steel (2), a first connecting rib (3) and a sprayed concrete layer (4); characterized in that: There are several channel steels (2) arranged between the two retaining piles (1); the several channel steels (2) are horizontally arranged along the vertical direction; the first connecting bar (3) is in a "J" shape; both ends of the channel steel (2) are respectively connected to the vertical main bars of the two retaining piles (1) through the first connecting bar (3); shotcrete layers (4) are arranged on both sides of the channel steel (2) along the retaining pile (1) from top to bottom.

2. The inter-pile reinforcement structure according to claim 1, characterized in that: There are several second connecting bars (5) arranged on the soil-facing side of the channel steel (2); the several second connecting bars (5) are vertically arranged along the horizontal direction and are located between the two retaining piles (1); the positions where the second connecting bars (5) cross the channel steel (2) are connected; the second connecting bars (5) and the channel steel (2) form a reticular structure.

3. The inter-pile reinforcement structure according to claim 2, characterized in that: Above the position where the second connecting bar (5) crosses the channel steel (2), there is a steel bar anchor (6); the steel bar anchor (6) is perpendicular to both the second connecting bar (5) and the channel steel (2), and is connected to the channel steel (2); a part of the steel bar anchor (6) is inserted into the soil, and the other part is arranged in the shotcrete layer (4).

4. The inter-pile reinforcement structure according to claim 3, characterized in that: The length of the steel bar anchor (6) is 1500 mm.

5. The inter-pile reinforcement structure according to any one of claims 1 to 3, characterized in that: The model of the channel steel (2) is 10# channel steel.

6. A pile reinforcement structure according to any one of claims 1 to 4, characterized in that: The first connecting rib (3), the second connecting rib (5) and the steel bar anchor (6) are all made of of steel bars.

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