Reinforcing structure at jumping position of support steel sheet pile
By setting up steel mesh and concrete layers at the gaps in the steel sheet piles to form reinforced concrete slabs, and using support plates and support structures to improve the support strength at the gaps, the impact of the gaps at the jumping and driving of steel sheet piles on the stability of the foundation pit is solved, and higher support effect and safety are achieved.
Patent Information
- Application Number
- CN202422051578.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-22
AI Technical Summary
In foundation pit projects, the retaining gaps that occur when steel sheet piles need to skip the current pipeline are weak links in the foundation pit, affecting the stability and safety of the foundation pit, and are difficult to effectively strengthen.
Design a reinforcement structure for supporting steel sheet pile jumping, including setting up a steel mesh and a concrete layer at the notch, forming a reinforced concrete slab covering the notch, and limiting the mutual proximity of the support plate and the support structure, and bearing the pressure from the soil layer.
Through the coverage of reinforced concrete slabs and the support structure, the support strength and load bearing capacity at the notch are significantly improved, and the stability and safety of the foundation pit are enhanced.
Smart Images
Figure CN223034021U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of steel sheet pile support technology, and particularly relates to a reinforcement structure at the skip driving position of a support steel sheet pile. Background Art
[0002] Steel sheet pile support is widely used in foundation pit engineering, and has the advantages of convenient construction, short construction period, low cost, etc.
[0003] In specific applications, a situation is often encountered: the existing pipeline crosses the foundation pit. Due to reasons such as coordination difficulty and cost, the pipeline cannot be relocated and modified, and can only be protected. The steel sheet pile needs to skip the existing pipeline and a retaining soil gap appears. Such a gap caused by the skip driving of the support steel sheet pile is a weak link of the foundation pit, affecting the stability and safety of the foundation pit. In order to avoid soil collapse and local failure of the foundation pit at the gap, it is necessary to reinforce the gap. Therefore, it is necessary to design a simple and effective reinforcement structure as a beneficial supplement to the steel sheet pile support to improve the adaptability of the steel sheet pile to the surrounding environment. Summary of the Utility Model
[0004] Based on the above description, the utility model provides a reinforcement structure at the skip driving position of a support steel sheet pile to be used as a beneficial supplement to the steel sheet pile support and improve the adaptability of the steel sheet pile to the surrounding environment.
[0005] The technical solution for the utility model to solve the above technical problems is as follows:
[0006] The present application provides a reinforcement structure at the skip driving position of a support steel sheet pile, and the technical solution adopted is as follows:
[0007] A reinforcement structure at the skip driving position of a support steel sheet pile, comprising:
[0008] Two steel bar meshes are respectively arranged at two gaps of the support structure. The steel bar mesh connects the steel sheet piles on both sides of the gap and covers the gap. The surface of the soil body at the gap is covered with a concrete layer. The steel bar mesh passes through the concrete layer and forms a reinforced concrete slab with the concrete layer. The reinforced concrete slab covers the gap. The existing pipeline passes through the reinforced concrete slab;
[0009] Two support plates are sleeved outside the existing pipeline and are located between the two reinforced concrete slabs. The two support plates are respectively attached to the two reinforced concrete slabs, and the two support plates are connected by a support structure. The support structure restricts the two support plates from moving closer to each other along the axial direction of the existing pipeline.
[0010] Preferably, the support structure includes a plurality of support rods. The axis of the support rod is parallel to the existing pipeline, and both ends of the support rod are respectively connected to the two support plates. The plurality of support rods are arranged at intervals along the circumferential direction of the existing pipeline.
[0011] Preferably, adjacent two of the support rods are connected by a connecting rod, and the axis of the connecting rod is perpendicular to the axis of the support rod.
[0012] Preferably, the support plate comprises two sub-plates, a semi-circular notch is formed at one side edge of each sub-plate, and the two sub-plates are spliced to form the support plate with a circular hole, and the circular hole is adapted to the existing pipeline.
[0013] Preferably, the two sub-plates of one support plate are fixedly welded.
[0014] Preferably, the waist beam of the support structure straddles the notch at the notch and is connected to the steel sheet piles on both sides of the notch.
[0015] Preferably, the waist beam is connected to the existing pipeline through a vertical support assembly at the notch. The vertical support assembly comprises a hanging plate and two suspension rods. The hanging plate is located below the existing pipeline and fits the existing pipeline. The two suspension rods are located on both sides of the existing pipeline, and both ends of the suspension rod are respectively connected to the waist beam and the hanging plate.
[0016] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:
[0017] 1. In the present application, a steel bar mesh and a concrete layer are arranged at the notch of the steel sheet pile. The concrete layer is formed by spraying concrete on the exposed soil surface at the notch. The steel bar mesh penetrates through the concrete layer. After the concrete layer solidifies, a reinforced concrete slab is formed with the steel bar mesh. Thus, the notch is covered by the reinforced concrete slab to realize the support of the notch of the steel sheet pile. During construction, the layout of the steel bar mesh can be completed first, and then concrete is sprayed on the exposed soil surface at the notch to form a concrete layer. After the concrete layer solidifies, a reinforced concrete slab is formed with the steel bar mesh. The construction method is simple; by arranging two support plates, the support plates are sleeved outside the existing pipeline and fit the reinforced concrete slab, and the two support plates are connected by a support structure to limit the mutual approach, that is, the support structure can bear the pressure from the soil layer, so as to support the reinforced concrete slab through the support plates, improve the bearing capacity of the reinforced concrete slab, and thus improve the reinforcement effect at the notch. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic view of the reinforcement structure at the jump-drilling position of the supporting steel sheet pile provided by the embodiment of the present invention;
[0019] Figure 2 It is an installation schematic view of the steel bar mesh in the reinforcement structure at the jump-drilling position of the supporting steel sheet pile provided by the embodiment of the present invention;
[0020] Figure 3 It is a top view of the reinforcement structure at the jump-drilling position of the supporting steel sheet pile provided by the embodiment of the present invention;
[0021] Figure 4 This is a schematic structural view of the support plate in the reinforcement structure at the stagger driving position of the supporting steel sheet piles provided by the embodiments of the present utility model.
[0022] In the attached drawings, the list of components represented by each reference numeral is as follows:
[0023] 1. Steel sheet pile; 2. Waling beam; 3. Existing pipeline; 4. Steel mesh; 5. Concrete layer; 6. Reinforced concrete slab; 7. Support plate; 71. Sub-plate; 8. Support rod; 9. Connecting rod; 10. Suspension plate; 11. Suspension rod. Detailed implementation manners
[0024] For the convenience of understanding the present application, the present application will be described more comprehensively below with reference to the relevant attached drawings. Embodiments of the present application are shown in the attached drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of the present application in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present application.
[0026] It can be understood that spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. can be used herein to describe the relationship between one element or feature shown in the drawings and other elements or features. It should be understood that in addition to the orientation shown in the drawings, spatial relationship terms also include different orientations of the devices during use and operation. For example, if the device in the attached drawings is flipped, the element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device can also include other orientations (such as rotating 90 degrees or other orientations), and the spatial description terms used herein are correspondingly interpreted.
[0027] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection", if there is an electrical signal or data transfer between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.
[0028] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that terms such as "comprising", "including" or "having" specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.
[0029] Referring to Figures 1-4 As shown, an embodiment of the present application provides a reinforcement structure at the staggering joint of retaining steel sheet piles, which includes two steel bar meshes 4. The two steel bar meshes 4 are respectively arranged at two notches of the retaining structure. The steel bar mesh 4 connects the steel sheet piles 1 on both sides of the notch and covers the notch. The surface of the soil body at the notch is covered with a concrete layer 5. The steel bar mesh 4 passes through the concrete layer 5 and forms a reinforced concrete slab 6 with the concrete layer 5. The reinforced concrete slab 6 covers the notch, and the existing pipeline 3 passes through the reinforced concrete slab 6.
[0030] Referring to Figures 1-2 As shown, specifically, the steel bar mesh 4 includes a plurality of horizontal steel bars and a plurality of vertical steel bars. The horizontal steel bars connect the steel sheet piles 1 on both sides of the notch. The plurality of horizontal steel bars are arranged at intervals in the vertical direction. The vertical steel bars connect the plurality of horizontal steel bars. The plurality of vertical steel bars are arranged at intervals in the horizontal direction. The concrete layer 5 is formed by spraying concrete on the exposed soil surface at the notch. The steel bar mesh 4 passes through the concrete layer 5. After the concrete layer 5 solidifies, it forms a reinforced concrete slab 6 with the steel bar mesh 4, so as to cover the notch through the reinforced concrete slab 6 and realize the support of the notch of the steel sheet pile 1.
[0031] Referring to Figure 1 and Figure 3 As shown, in order to improve the strength of the connection between the reinforced concrete slab 6 and the existing pipeline 3, two support plates 7 are provided. The support plates 7 are sleeved outside the existing pipeline 3 and are located between the two reinforced concrete slabs 6. The two support plates 7 are respectively attached to the two reinforced concrete slabs 6, and the two support plates 7 are connected by a support structure. The support structure restricts the two support plates 7 from moving closer to each other along the axial direction of the existing pipeline 3. The support structure can bear the pressure from the soil layer, so as to support the reinforced concrete slab 6 through the support plates 7, improve the lateral bearing capacity of the reinforced concrete slab 6, and improve the reinforcement effect at the notch.
[0032] Referring to Figure 4 As shown, specifically, the support plate 7 is provided to include two sub-plates 71. A semi-circular notch is opened at one side edge of the sub-plate 71. The two sub-plates 71 are spliced to form a support plate 7 with a circular hole, and the circular hole is adapted to the existing pipeline 3. During construction, the two sub-plates 71 are respectively attached to the reinforced concrete slab 6 and the existing pipeline 3 is embedded in the notch. After the two sub-plates 71 are spliced to form the support plate 7, the two sub-plates 71 are welded and fixed.
[0033] Referring to Figure 1 and Figure 3 as shown, the support structure includes a plurality of support rods 8. The axis of the support rod 8 is parallel to the existing pipeline 3, and both ends of the support rod 8 are respectively connected to two support plates 7. The plurality of support rods 8 are arranged at intervals along the circumferential direction of the existing pipeline 3. Specifically, the support rod 8 can be processed from steel pipes, angle steels or channel steels, etc. Both ends of the support rod 8 and the two support plates 7 are welded and fixed. To prevent the support rod 8 from bending, the adjacent support rods 8 are connected by a connecting rod 9. The axis of the connecting rod 9 is perpendicular to the axis of the support rod 8 and is welded and fixed to the support rod 8. By using the support rod 8 to support the two support plates 7 and the reinforced concrete slab 6, the pressure from the soil layer at the notch can be borne, so as to improve the support strength of the reinforced concrete slab 6.
[0034] Referring to Figure 1 as shown, further, when constructing the steel sheet pile 1, its waling beam 2 is continuous at the notch, that is, the waling beam 2 straddles the notch and is connected to the steel sheet piles 1 on both sides of the notch. And the waling beam 2 is connected to the existing pipeline 3 through a vertical support assembly at the notch, so as to support the existing pipeline 3 in the vertical direction through the vertical support assembly.
[0035] Referring to Figure 1 as shown, specifically, the vertical support assembly includes a hanging plate 10 and two hanging rods 11. The hanging plate 10 is located below the existing pipeline 3 and fits the existing pipeline 3. The two hanging rods 11 are located on both sides of the existing pipeline 3, and both ends of the hanging rod 11 are respectively connected to the waling beam 2 and the hanging plate 10. The hanging rod 11 can be a screw rod. During construction, holes for the hanging rod 11 to pass through are opened on the waling beam 2 and the hanging plate 10. Both ends of the hanging rod 11 respectively pass through the waling beam 2 and the hanging plate 10 and are connected with nuts, so as to bear the weight of the existing pipeline 3 through the cooperation of the hanging rod 11 and the hanging plate 10, thereby supporting the existing pipeline 3 inside the steel sheet pile 1 and improving its stability.
[0036] The construction method of the above reinforcement structure includes the following steps:
[0037] S1. Drive the supporting steel sheet pile 1, skip driving when encountering the existing pipeline 3, and form a supporting notch. The width of the notch should be minimized on the premise of meeting the protection requirements for the existing pipeline 3 to reduce the construction difficulty of the reinforcement structure.
[0038] S2. Excavate the first layer of soil in the foundation pit. The excavation depth is determined by the calculation of the design unit, generally not greater than 1m.
[0039] S3. Weld 4 pieces of steel bar meshes to the steel sheet pile 1, and spray concrete on the exposed soil surface at the skip driving part of the steel sheet pile 1 to form a concrete layer 5. The horizontal steel bars of the steel bar mesh 4 should be determined by the calculation of the design unit, and several large-diameter steel bars can be set below and above the pipeline as appropriate for strengthening. The vertical steel bars of the steel bar mesh 4 can be treated according to the structure. The sprayed concrete is determined by the calculation of the design unit.
[0040] S4. After the shotcrete reaches a certain strength, excavate the lower layer of soil. The depth of stratified excavation and the strength value that the shotcrete needs to reach before excavating the lower layer of soil are both calculated and determined by the design unit.
[0041] S5. Repeat steps S3 and S4 until the foundation pit excavation is completed.
[0042] S6. After the foundation pit excavation is completed, install the support plate 7 and the support structure, and install the vertical support structure.
[0043] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A reinforcement structure for supporting a steel sheet pile jump point, characterized in that: include: Two steel meshes (4) are respectively arranged at two gaps in the supporting structure, the steel meshes (4) connect the steel sheet piles (1) at both sides of the gap and cover the gap, the soil surface at the gap is covered with a concrete layer (5), the steel meshes (4) pass through the concrete layer (5) and form a reinforced concrete slab (6) with the concrete layer (5), the reinforced concrete slab (6) covers the gap, and the existing pipeline (3) passes through the reinforced concrete slab (6); Two support plates (7), the support plates (7) are sleeved outside the existing pipeline (3) and located between the two reinforced concrete plates (6), the two support plates (7) are respectively attached to the two reinforced concrete plates (6), and the two support plates (7) are connected by a support structure, and the support structure restricts the two support plates (7) from moving closer to each other along the axial direction of the existing pipeline (3).
2. The reinforcement structure for supporting the jump-driving position of the steel sheet pile according to claim 1 is characterized in that: The support structure comprises a plurality of support rods (8), the axes of the support rods (8) are parallel to the existing pipeline (3), and the two ends of the support rods (8) are respectively connected to two support plates (7), and the plurality of support rods (8) are arranged at intervals along the circumference of the existing pipeline (3).
3. The reinforcement structure for supporting the jump-driving position of the steel sheet pile according to claim 2 is characterized in that: Two adjacent support rods (8) are connected via a connecting rod (9), and the axis of the connecting rod (9) is perpendicular to the axis of the support rod (8).
4. The reinforcement structure for supporting the jump-driving position of the steel sheet pile according to claim 1 is characterized in that: The support plate (7) comprises two sub-plates (71), one side edge of the sub-plate (71) is provided with a semicircular notch, and the two sub-plates (71) are spliced to form the support plate (7) with a circular hole, and the circular hole is adapted to the existing pipeline (3).
5. The reinforcement structure for supporting the jump-driving position of the steel sheet pile according to claim 4 is characterized in that: The two sub-plates (71) of one supporting plate (7) are fixed by welding.
6. The reinforcement structure for supporting the jump-driving position of the steel sheet pile according to claim 1 is characterized in that: The waist beam (2) of the supporting structure spans the gap at the gap and is connected to the steel sheet piles (1) on both sides of the gap.
7. The reinforcement structure for supporting the jump-driving position of the steel sheet pile according to claim 6 is characterized in that: The waist beam (2) is connected to the existing pipeline (3) at the notch through a vertical support assembly, and the vertical support assembly comprises a hanging plate (10) and two hanging rods (11), the hanging plate (10) is located below the existing pipeline (3) and fits the existing pipeline (3), the two hanging rods (11) are located on both sides of the existing pipeline (3), and the two ends of the hanging rods (11) are respectively connected to the waist beam (2) and the hanging plate (10).