A connecting support structure of a steel sheet pile and a positioning pile

Abstract

This invention relates to the field of cofferdam construction technology, and particularly to a connection support structure for steel sheet piles and positioning piles, comprising a circular pipe and two sheet piles; the connection support structure for steel sheet piles and positioning piles also includes a connection mechanism, wherein multiple connection mechanisms are provided, each used for connecting the circular pipe and the sheet piles, and connecting the sheet piles with each other. The sealing part and the insertion groove used in this invention can effectively prevent soil from entering the insertion groove, thereby preventing soil from obstructing the connection mechanism and forming seepage channels during the splicing of the circular pipe and the sheet piles, effectively improving the overall strength and seepage prevention strength after the circular pipe and sheet piles are spliced.

Description

Technical Field

[0001] This invention relates to the field of cofferdam construction technology, and in particular to a connection and support structure for steel sheet piles and positioning piles. Background Technology

[0002] In water conservancy projects, building foundation pit support, and cofferdam construction, the connection and support structure composed of steel sheet piles and positioning piles is widely used due to its advantages such as convenient construction and strong load-bearing capacity. This type of structure usually adopts a construction process of positioning piles first and steel sheet piles second, using the alternating distribution of positioning piles and steel sheet piles to form a continuous soil and water retaining system.

[0003] In existing technologies, the connection between positioning piles and sheet piles mostly relies on traditional interlocking splicing or simple slot-jointing structures. Since the construction environment is often characterized by loose geological formations such as mud and silt, and existing connection structures lack specific mud-proof protection designs, mud can easily enter the interlocking joint or connecting groove through gaps and openings in the connection area during the driving of positioning piles and splicing of sheet piles. This mud hinders the precise fit between the connector and the connecting groove, increasing friction. Simultaneously, the mud remaining on the interlocking surface forms an isolation layer, preventing the sheet pile and positioning pile from fitting tightly together, easily resulting in gaps. These gaps not only reduce the overall structural integrity but also create seepage channels. Subsequent water erosion or soil detachment during use will further increase the risk of seepage, affecting the support and water-blocking effects.

[0004] Therefore, there is an urgent need to provide a connection support structure that can improve the strength of water seepage protection and enhance the stability of the connection. Summary of the Invention

[0005] Therefore, it is necessary to provide a connection support structure for steel sheet piles and positioning piles, which aims to solve the problems of low seepage resistance and low stability at the connection when splicing existing steel sheet piles and positioning piles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a connection support structure for steel sheet piles and positioning piles, comprising a circular pipe and two sheet piles.

[0007] The connection support structure between the steel sheet pile and the positioning pile also includes a connection mechanism, which is provided in multiple ways and is used for connecting the round pipe and the sheet pile, and connecting the sheet piles with each other.

[0008] The connection mechanism includes a connection frame and a plug-in part respectively installed on adjacent round pipes and sheet piles or two adjacent sheet piles. The connection frame has a vertical plug-in groove, which consists of a snap-fit ​​groove and a guide opening.

[0009] The connecting frame has multiple sealing sections evenly distributed from top to bottom on the front and rear side walls at the guide opening. The multiple sealing sections distributed front and back are staggered left and right, and staggered up and down, and overlap in both the up-down and left-right directions.

[0010] The sealing part includes a rotating through hole opened on the side wall of the connecting frame, and a sealing plate is hinged in the rotating through hole. The sealing plate is located in the guide opening, and multiple sealing plates are staggered from top to bottom to seal the guide opening.

[0011] The insertion part includes an insertion member that engages with the snap-fit ​​groove and a connector that engages with the guide opening.

[0012] The inner end of the middle section of the connecting frame is provided with a sealing part for sealing the plug-in component.

[0013] The lower end of the connecting frame is equipped with a conical protrusion for breaking ground, and the conical protrusion seals the bottom of the insertion groove.

[0014] During the connection frame insertion process, multiple sealing parts distributed at the front and back separate the soil from the insertion groove. During the insertion process, the insertion part drives multiple sealing parts to move outward of the guide opening and insert into the soil.

[0015] Preferably, the connecting mechanism further includes two limiting reinforcement parts respectively connected to the upper sides of the front and rear ends of the connecting frame.

[0016] Preferably, the sealing part includes an installation through groove formed at the inner end of the middle section of the connecting frame. A sealing rubber is installed at the opening of the installation through groove. A sliding strip is installed at the end of the sealing rubber away from the snap-fit ​​groove. The sliding strip has a right-angled triangular structure and slides in cooperation with the installation through groove. A pushing rod is provided at the end of the sliding strip away from the sealing rubber.

[0017] Preferably, the push rod has an L-shaped structure, and the vertical section of the push rod near the sliding bar has a slanted protrusion. The slanted surface of the slanted protrusion slides and engages with the slanted surface of the sliding bar. When the push rod moves down, it pushes the sliding bar, causing the sealing rubber to adhere tightly to the plug. The upper end of the horizontal section of the push rod has a protrusion block installed by welding.

[0018] Preferably, the limiting reinforcement includes a fixing plate fixedly installed on the connecting frame, and a plurality of evenly distributed guide limiting blocks are installed on the end of the fixing plate away from the connecting frame. The guide limiting blocks have a hook-shaped structure, and the end of the guide limiting block away from the fixing plate abuts against the sheet pile.

[0019] Preferably, the upper end of the conical protrusion is provided with a settling hole, the size of which matches the size of the transverse section of the push rod.

[0020] Preferably, the end of the guide limiting block near the sheet pile is rotatably connected with a ball bearing for reducing the friction between the sheet pile and the guide limiting block.

[0021] Preferably, the sealing plate has a cutting edge at the end away from the guide opening.

[0022] In summary, the present invention has the following beneficial technical effects: 1. The sealing part and the insertion groove used in the present invention can effectively prevent soil from entering the insertion groove, thereby preventing soil from obstructing the connection mechanism and forming a seepage channel when splicing the round pipe and the sheet pile, effectively improving the overall strength and seepage prevention strength after splicing the round pipe and the sheet pile.

[0023] 2. The conical protrusion used in this invention seals the bottom of the insertion groove from the lower end of the connecting frame. At the same time, the staggered sealing plates at the guide opening seal the guide opening of the insertion groove, effectively preventing soil from entering the insertion groove. This prevents soil from acting as an impurity to isolate the locking contact surface and also prevents soil from falling off during long-term use, thus avoiding the formation of water seepage channels. In addition, it works with the sealing part to form multiple water seepage protections, improving the overall waterproof effect of the connecting mechanism.

[0024] 3. The connector used in this invention pushes multiple sealing plates in sequence, and the multiple sealing plates rotate outward of the guide opening and are inserted into the soil in sequence. After the sealing plates are inserted into the soil, the connecting frame is further fixed, which synergistically improves the overall bearing capacity of the round pipe and the sheet pile, effectively reduces the phenomenon of tilting during the driving of the sheet pile, and improves the overall stability and impact resistance of the round pipe and the sheet pile. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0027] Figure 2 A front view of the present invention is shown.

[0028] Figure 3 A left view of the present invention is shown.

[0029] Figure 4 It shows Figure 3 Sectional view of AA.

[0030] Figure 5 It shows Figure 4A magnified view of region B in the middle.

[0031] Figure 6 The diagram shows a structural schematic of the present invention, including a portion of the circular tube, a portion of the connecting frame, a portion of the insertion groove, a portion of the sealing portion, and a portion of the sealing portion.

[0032] Figure 7 The diagram shows the working state of the circular tube of the present invention after being inserted into the soil and spliced ​​with the sheet pile.

[0033] Figure 8 A schematic diagram of the structure of the present invention after multiple circular pipes and multiple sheet piles are spliced ​​together is shown.

[0034] The above-mentioned figures include the following reference numerals: 1. Circular pipe; 2. Sheet pile; 3. Connecting mechanism; 30. Connecting frame; 31. Insertion part; 310. Insertion piece; 311. Connector; 32. Insertion groove; 320. Snap-fit ​​groove; 321. Guide opening; 33. Sealing part; 330. Rotating through hole; 331. Sealing plate; 34. Sealing part; 340. Installation through groove; 341. Sealing rubber; 342. Sliding strip; 343. Push rod; 35. Limiting reinforcement part; 350. Fixing plate; 351. Guide limiting block; 36. Conical protrusion; 360. Settlement hole; 4. Soil. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] See Figures 1-3 A connection support structure for steel sheet piles and positioning piles includes a circular pipe 1 and two sheet piles 2. The circular pipe 1 is an existing steel pipe positioning pile, and the sheet piles 2 are existing steel sheet piles. During construction, multiple circular pipes 1 are first driven into the ground using a vibratory hammer. After all the circular pipes 1 are driven in, two sheet piles 2 are driven between two adjacent circular pipes 1, forming a structure in which circular pipes 1, sheet piles 2, and circular pipes 1 are alternately distributed.

[0037] See Figure 1 and Figure 4 The connection support structure between the steel sheet pile and the positioning pile also includes a connection mechanism 3. The connection mechanism 3 is provided in multiple ways and is used for connecting the round pipe 1 and the sheet pile 2, and connecting the sheet pile 2 with each other.

[0038] See Figure 1 , Figure 4 , Figure 5 and Figure 7 The connecting mechanism 3 includes a connecting frame 30 and a plug-in part 31 respectively installed on adjacent round pipes 1 and sheet piles 2 or two adjacent sheet piles 2. The connecting frame 30 has a vertical plug-in groove 32. The lower end of the connecting frame 30 is equipped with a conical protrusion 36 for breaking the soil. The conical protrusion 36 seals the bottom of the plug-in groove 32.

[0039] In practice, connecting frames 30 are installed on both sides of the circular pipe 1. During the driving of the circular pipe 1, the circular pipe 1 drives the connecting frames 30 on both sides to be inserted into the soil 4. The conical protrusion 36 at the lower end of the connecting frame 30 squeezes the soil 4 to both sides, making it easier for the connecting frame 30 to be inserted into the soil 4. At the same time, the conical protrusion 36 seals the bottom of the insertion groove 32, preventing the soil 4 from entering the insertion groove 32 through the bottom of the connecting frame 30, thereby avoiding any impact on the subsequent insertion of the insertion part 31 on the sheet pile 2 into the insertion groove 32, until the circular pipe 1 is driven to the corresponding depth and the driving of the circular pipe 1 is stopped.

[0040] See Figures 4-6 The insertion slot 32 is composed of a snap-fit ​​slot 320 and a guide opening 321.

[0041] See Figure 1 , Figure 4 , Figure 6 and Figure 7 The connecting frame 30 has multiple sealing portions 33 evenly distributed from top to bottom on its front and rear side walls at the guide opening 321. The multiple sealing portions 33 are staggered left and right, and top and bottom, and overlap in both the vertical and horizontal directions. Each sealing portion 33 includes a rotating through hole 330 on the side wall of the connecting frame 30. A sealing plate 331 is hinged in the rotating through hole 330. The sealing plate 331 is located in the guide opening 321. The multiple sealing plates 331, which are staggered from top to bottom, are used to seal the guide opening 321.

[0042] In actual operation, the cross-section of the snap-fit ​​groove 320 is circular, and the cross-section of the guide opening 321 is rectangular. In the initial state, multiple sealing plates 331 are all vertical and partly located within the guide opening 321. The multiple sealing plates 331 in the front and rear positions are staggered vertically and horizontally, so that two adjacent sealing plates 331 overlap at the guide opening 321, thereby increasing the sealing between the two sealing plates 331. During the insertion process of the connecting frame 30, the multiple sealing parts 33 distributed in the front and rear separate the soil 4 from the insertion groove 32. Specifically, the connecting frame 30 drives multiple vertical sealing plates 331 to be inserted into the soil 4 at the same time. The multiple sealing plates 331 seal the guide opening 321, effectively preventing the soil 4 from entering the guide opening 321 during the insertion process, and further preventing any impact on the subsequent insertion of the insertion part 31 and the insertion groove 32.

[0043] See Figure 1 and Figures 4-6 The insertion part 31 includes an insertion member 310 that engages with the snap-fit ​​groove 320 and a connector 311 that engages with the guide opening 321.

[0044] In specific operations, the plug-in component 310 is an existing tubular structure and corresponds to the shape of the snap-fit ​​groove 320. The connector 311 is a plate-like structure and is consistent with the structure of the guide opening 321. The sheet pile 2 is divided into two types: the first type has a connecting frame 30 and a plug-in part 31 installed at both ends, and the second type has a plug-in part 31 installed at both ends. When driving the sheet pile 2, the first type of sheet pile 2 is driven first, and then the second type of sheet pile 2 is driven. When driving the first type of sheet pile 2, a vibratory hammer moves the first type of sheet pile 2 between two adjacent circular pipes 1. The first type of sheet pile 2, through the connector 311, drives the insertion part 310 to move above the corresponding connecting frame 30. Then, the vibratory hammer drives the first type of sheet pile 2 downward, and the insertion part 31 engages with the corresponding insertion groove 32. During this process, the insertion part 310 is inserted into the snap-fit ​​groove 320 and moves downward, while the connector 311 is inserted into the guide opening 321 and moves downward. The downward-moving connector 311 pushes multiple sealing plates 331 in sequence, and the multiple sealing plates 331 rotate outward from the guide opening 321 in sequence. The end of the sealing plate 331 away from the guide opening 321 is provided with a cutting edge, and the multiple sealing plates 331 are easily inserted into the soil 4 through the cutting edge (e.g., Figure 7As shown), this enhances the stability of the connecting frame 30 located in the soil 4, effectively preventing the first type of sheet pile 2 from tilting during the driving process, and thus preventing deformation of the sheet pile 2 and the connecting frame 30. When the connector 311 moves to the upper end of the conical protrusion 36, the vibratory hammer stops working. At this time, the first type of sheet pile 2 has been driven to the required position, and no measurement is required from the construction personnel. This ensures that the round pipe 1 and the sheet pile 2 are at the same height, improving the installation effect of the round pipe 1 and the sheet pile 2. Because multiple sealing plates 331 seal the guide opening 321, the soil 4 will not fill the guide opening 321 and the snap-fit ​​groove 320, thus not affecting the insertion of the connector 311 into the guide opening 321 or the insertion of the connector 310 into the snap-fit ​​groove 320. This ensures that there will be no loosening after splicing, guaranteeing the integrity of the structure. It also prevents increased friction between the connector 310 and the snap-fit ​​groove 320, and between the connector 311 and the guide opening 321, during the driving of the sheet pile 2, ensuring that the sheet pile 2 will not deform during driving. Without the soil 4 acting as an impurity to isolate the locking contact surface, the tightness between the connector 310 and the snap-fit ​​groove 320 is effectively increased, preventing the formation of seepage channels due to soil 4 obstruction, and also preventing soil 4 from falling off and forming seepage channels due to wind or water erosion during subsequent use. This improves the sealing performance of the connection between the connector 310 and the snap-fit ​​groove 320.

[0045] Then repeat the steps of driving the first type of sheet pile 2, and drive the second type of sheet pile 2 between the first type of sheet pile 2 and the round pipe 1.

[0046] See Figure 1 and Figures 4-6 The inner end of the middle section of the connecting frame 30 is provided with a sealing part 34 for sealing the plug-in 310. The sealing part 34 includes an installation through groove 340 opened at the inner end of the middle section of the connecting frame 30. A sealing rubber 341 is installed at the opening of the installation through groove 340. A sliding strip 342 is installed at the end of the sealing rubber 341 away from the snap-fit ​​groove 320. The sliding strip 342 has a right-angled triangular structure and slides in cooperation with the installation through groove 340. A push rod 343 is provided at the end of the sliding strip 342 away from the sealing rubber 341.

[0047] See Figure 1 and Figures 4-7 The push rod 343 has an L-shaped structure. The vertical section of the push rod 343 has a slanted protrusion at the end near the sliding bar 342. The slanted surface of the slanted protrusion slides and engages with the slanted surface of the sliding bar 342. When the push rod 343 moves down, it pushes the sliding bar 342, causing the sealing rubber 341 to be tightly attached to the connector 310. The upper end of the tapered protrusion 36 has a settling hole 360. The size of the settling hole 360 ​​matches the size of the horizontal section of the push rod 343. A protrusion block is installed on the upper end of the horizontal section of the push rod 343 by welding.

[0048] In specific operation, when the connecting frame 30 is inserted, the sealing rubber 341, sliding strip 342 and pushing rod 343 are simultaneously inserted into the soil 4. Then, during the process of the insertion part 310 and the snap-fit ​​groove 320 being inserted, the insertion part 310 gradually moves to the bottom of the snap-fit ​​groove 320 and presses down the protrusion on the horizontal section of the pushing rod 343. The horizontal section of the pushing rod 343 is subjected to force and moves downward in the settlement hole 360, which drives the inclined protrusion of the vertical section of the pushing rod 343 to move downward. The inclined protrusion of the vertical section pushes the inclined surface of the sliding strip 342 laterally, thereby pushing the sealing rubber 341 towards the insertion part 310 and making it stick tightly. Without adding other operation steps, the sealing performance between the insertion part 310 and the snap-fit ​​groove 320 is further enhanced.

[0049] See Figure 1 , Figure 4 and Figure 7 The connecting mechanism 3 further includes two limiting reinforcement parts 35 respectively connected to the upper sides of the front and rear ends of the connecting frame 30. Each limiting reinforcement part 35 includes a fixing plate 350 fixedly mounted on the connecting frame 30 by welding. Multiple evenly distributed guide limiting blocks 351 are welded to the end of the fixing plate 350 away from the connecting frame 30. The guide limiting blocks 351 have a hook-shaped structure, and the end of the guide limiting block 351 away from the fixing plate 350 abuts against the sheet pile 2. A ball bearing is rotatably connected to the end of the guide limiting block 351 near the sheet pile 2 to reduce friction between the sheet pile 2 and the guide limiting block 351.

[0050] In specific operations, during the driving of sheet pile 2, sheet pile 2 passes between multiple guide limiting blocks 351 on both the front and rear sides. The multiple guide limiting blocks 351 further guide the driving of sheet pile 2 to prevent the sheet pile 2 from tilting. When the sheet pile 2 is driven to the required position, the hook-shaped guide limiting blocks 351 support the position of the sheet pile 2 on the upper side of the soil 4, thereby improving the impact resistance of the connection between sheet pile 2 and round pipe 1, and thus improving the overall strength of the spliced ​​sheet pile 2 and round pipe 1.

[0051] Repeat the driving steps for the first type of sheet pile 2 and the second type of sheet pile 2 until all sheet piles 2 have been driven in (e.g., Figure 8 As shown in the figure, the circular pipe 1 and the sheet pile 2 have been driven in.

[0052] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A connection support structure for steel sheet piles and positioning piles, comprising a circular pipe and two sheet piles, characterized in that, Also includes: The connection mechanism is provided in multiple parts, each used for connecting the round pipe to the sheet pile and connecting the sheet pile to itself. The connection mechanism includes a connection frame and a plug-in part respectively installed on adjacent round pipes and sheet piles or two adjacent sheet piles. The connection frame has a vertical plug-in groove, which consists of a snap-fit ​​groove and a guide opening. The connecting frame has multiple evenly distributed sealing sections on the front and rear side walls at the guide opening. The multiple sealing sections distributed in the front and rear are staggered left and right and up and down, and overlap in both the up and down and left and right directions. The sealing part includes a rotating through hole opened on the side wall of the connecting frame, and a sealing plate is hinged in the rotating through hole. Multiple sealing plates are staggered from top to bottom to seal the guide opening. The insertion part includes an insertion member that engages with the snap-fit ​​groove and a connector that engages with the guide opening; The inner end of the middle section of the connecting frame is provided with a sealing part for sealing the plug-in component; The lower end of the connecting frame is equipped with a conical protrusion for breaking ground, and the conical protrusion seals the bottom of the insertion groove; During the connection frame insertion process, multiple sealing parts distributed at the front and back separate the soil from the insertion groove. During the insertion process, the insertion part drives multiple sealing parts to move outward of the guide opening and insert into the soil.

2. The connection support structure for steel sheet piles and positioning piles according to claim 1, characterized in that: The connecting mechanism also includes two limiting reinforcement parts respectively connected to the upper sides of the front and rear ends of the connecting frame.

3. The connection support structure for steel sheet piles and positioning piles according to claim 2, characterized in that: The sealing part includes an installation through groove opened at the inner end of the middle section of the connecting frame. A sealing rubber is installed at the opening of the installation through groove. A sliding strip is installed at the end of the sealing rubber away from the snap-fit ​​groove. The sliding strip has a right-angled triangular structure and slides in cooperation with the installation through groove. A push rod is provided at the end of the sliding strip away from the sealing rubber.

4. The connection support structure between steel sheet piles and positioning piles according to claim 3, characterized in that: The push rod has an L-shaped structure. The vertical section of the push rod has a slanted protrusion at the end near the sliding bar. The slanted surface of the slanted protrusion slides and engages with the slanted surface of the sliding bar. When the push rod moves down, it pushes the sliding bar, causing the sealing rubber to adhere tightly to the plug. The upper end of the horizontal section of the push rod has a protrusion block installed by welding.

5. The connection support structure for steel sheet piles and positioning piles according to claim 2, characterized in that: The limiting reinforcement includes a fixing plate fixedly installed on the connecting frame. A plurality of evenly distributed guide limiting blocks are installed on the end of the fixing plate away from the connecting frame. The guide limiting blocks have a hook-shaped structure, and the end of the guide limiting block away from the fixing plate abuts against the sheet pile.

6. The connection support structure for steel sheet piles and positioning piles according to claim 3, characterized in that: The upper end of the tapered protrusion is provided with a settling hole, the size of which matches the size of the transverse section of the push rod.

7. The connection support structure for steel sheet piles and positioning piles according to claim 5, characterized in that: The guide limiting block is rotatably connected to a ball bearing to reduce the friction between the sheet pile and the guide limiting block at one end.

8. The connection support structure between steel sheet piles and positioning piles according to claim 1, characterized in that: The sealing plate has a cutting edge at the end away from the guide opening.

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