A device for assisting positioning of a reinforcement cage for a cast-in-place pile

Abstract

The utility model provides a kind of for cast-in-place bored pile reinforcement cage auxiliary positioning device, belong to the auxiliary positioning technical field of pile foundation engineering, and include: positioning sleeve frame and floating assembly, floating assembly includes: float, is provided with positioning mouth portion at the top of float, the bottom of float is fixedly connected with sleeve rod, the inside of sleeve rod is slidably provided with adjustable rod.The utility model, by designing the structure of floating assembly, make its float, sleeve rod, adjustable rod, sleeve rod and adjustable rod are combined by sleeving mode, and sleeve rod and adjustable rod are fixed by bolt assembly.According to the design hole depth of construction pile hole and current water level, the total length of required floating assembly is calculated and determined in advance, the sleeve rod and adjustable rod structure can be adjusted to adapt to different hole depth and water level change working condition, and the versatility is good.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary positioning technology in pile foundation engineering, specifically to an auxiliary positioning device for the reinforcing cage of bored cast-in-place piles. Background Technology

[0002] The installation of underwater steel reinforcement cages during bored pile construction presents challenges in elevation control and planar positioning.

[0003] Traditional methods often involve using a measuring rope to suspend a weight or relying on manual experience to determine the top elevation of the cage. These methods are greatly affected by water flow, mud concentration, and visibility, resulting in large cumulative errors and the inability to accurately locate the position in real time. Furthermore, when measuring the center plane position of the steel cage, there is a lack of a fixed reference benchmark, requiring the measuring instrument to be lowered multiple times for repeated verification. This process is cumbersome, heavily dependent on the technical skills of the personnel, and has low construction efficiency.

[0004] Application number 202120488884.5, entitled "Auxiliary Device for Positioning Reinforcing Cages in Drilled Cast-in-Place Piles," discloses an auxiliary device for positioning reinforcing cages in drilled cast-in-place piles. The device includes: a positioning sleeve with an axisymmetric structure and openings for the reinforcing bars to pass through; and a float connected to the center point of the positioning sleeve via a rope. This utility model solves the positioning problem during the lowering of the reinforcing cage, improving its positioning accuracy; however, it cannot adapt to different hole depths and water level changes, exhibiting poor versatility.

[0005] In view of the shortcomings of the prior art, the present invention provides an auxiliary positioning device for the reinforcing cage of bored cast-in-place piles. Utility Model Content

[0006] To address the problem that existing buoy positioning methods for bored pile reinforcement cages cannot adapt to different hole depths and water level changes, resulting in poor versatility, this utility model provides an auxiliary positioning device for bored pile reinforcement cages.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An auxiliary positioning device for reinforcing cages in bored piles includes: a positioning sleeve and a floating assembly.

[0009] The positioning frame includes: a cross positioning rod, a vertical pole is fixedly connected to the center of the cross positioning rod, and a hanging component is installed at the top of the vertical pole;

[0010] The floating assembly includes: a float, a positioning opening at the top of the float, a sleeve rod fixedly connected to the bottom of the float, an adjustable rod slidably disposed on the inner side of the sleeve rod, and the sleeve rod and the adjustable rod being fixedly connected by a bolt assembly;

[0011] The adjustable rod has a hook at its bottom end.

[0012] As a further description of the above technical solution:

[0013] The floating body includes:

[0014] The cylindrical part has a conical shell integrally formed at the bottom end, and the top end of the cylindrical part is closed and recessed downward to form a positioning opening.

[0015] A floating platform, which is fixedly sleeved on the outside of the cylinder.

[0016] As a further description of the above technical solution:

[0017] The bottom of the positioning port is provided with a drain outlet, and a drain pipe is connected to the drain outlet. The end of the drain pipe away from the drain outlet is connected to the side of the cylinder, and the connection between the drain pipe and the cylinder is located above the floating plate.

[0018] As a further description of the above technical solution:

[0019] The sleeve rod has a first hole on its side, and the adjustable rod has a row of holes on its side.

[0020] As a further description of the above technical solution:

[0021] The bolt assembly includes: bolts, washers, and nuts.

[0022] As a further description of the above technical solution:

[0023] The top of the sleeve is located inside the cavity of the float, and the top of the sleeve is closed.

[0024] The beneficial effects of this utility model are:

[0025] This invention designs a floating assembly structure that includes a float, a sleeve rod, and an adjustable rod. The sleeve rod and the adjustable rod are combined via a sleeve connection and secured with bolts. Based on the designed depth of the construction pile hole and the current water level, the required total length of the floating assembly is pre-calculated and determined. The sleeve rod and adjustable rod structure allow for adaptive adjustments, thus adapting to different hole depths and water level variations, demonstrating good versatility. Attached Figure Description

[0026] The following figures are shown to more clearly illustrate an auxiliary positioning device for reinforcing cages in bored piles;

[0027] Figure 1 This is a perspective view of the present utility model;

[0028] Figure 2 This is a front view of the present invention;

[0029] Figure 3 This is a top view of the present invention;

[0030] Figure 4 This is a diagram of the floating component of this utility model;

[0031] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle;

[0032] Figure 6 for Figure 4 Enlarged view of section B in the middle;

[0033] Figure 7 This is a schematic diagram showing the usage state of this utility model.

[0034] The labels in the attached diagram;

[0035] 1. Floating assembly; 101. Float; 1011. Cylinder section; 1012. Conical shell section; 1013. Positioning port section; 1014. Float; 1015. Drainage outlet; 1016. Drainage pipe; 102. Sleeve rod; 103. Adjustable rod; 103a. Drainage hole; 103b. Hook section; 104. Bolt assembly; 1041. Bolt component; 1042. Washer; 1043. Nut component; 2. Positioning sleeve; 201. Cross positioning rod; 202. Upright pole; 203. Hanging component. Detailed Implementation

[0036] Please refer to the attached document. Figures 1-7 This embodiment shows an auxiliary positioning device for the reinforcing cage of a bored pile, which includes a positioning sleeve 2 and a floating component 1.

[0037] The floating component 1 provides levitation support and can automatically maintain a vertical position in the water without the need for additional tools. The positioning sleeve 2 is hung below the floating component 1, which can automatically keep the positioning sleeve 2 in a horizontal position. The positioning sleeve 2 is used on the vertical main bars of the steel cage that need to be positioned.

[0038] The positioning frame 2 includes: a cross positioning rod 201, a vertical pole 202, and a hanging component 203. The vertical pole 202 is fixedly connected vertically upward from the center of the cross positioning rod 201. Generally, the cross positioning rod 201 and the vertical pole 202 can be made of ordinary carbon steel. During welding, it is necessary to ensure that the welding point is located at the center of gravity of the cross positioning rod 201. The hanging component 203 is installed at the top of the vertical pole 202. The hanging component 203 is used to hang on the bottom of the floating component 1. The vertical pole 202 is kept vertical when in use.

[0039] The floating assembly 1 includes: a float 101, a positioning port 1013 provided at the top of the float 101, a sleeve rod 102 fixedly connected to the bottom of the float 101, an adjustable rod 103 slidably provided on the inner side of the sleeve rod 102, and the sleeve rod 102 and the adjustable rod 103 are fixedly connected by a bolt assembly 104, and a hook 103b is provided at the bottom of the adjustable rod 103.

[0040] Before use, the total length of the required floating assembly 1 is calculated and determined in advance based on the designed depth of the construction pile hole and the current water level. The sleeve rod 102 and the adjustable rod 103 are combined by a sleeve connection, aligned with the reserved hole at the corresponding height on the pipe wall, and then the bolt assembly 104 is installed to fix the sleeve rod 102 and the adjustable rod 103.

[0041] When in use, the floating component 1 is placed in the water, and then the hanging part 203 is hung on the hook 103b to achieve a quick connection between the positioning sleeve 2 and the floating component 1. This hanging method allows the floating component 1 to swing within a certain range under the action of water flow without affecting its overall function.

[0042] During the lowering of the rebar cage, as the cage is slowly lowered into the pile hole, the floating component 1 will remain vertical and float on the water surface. The operator can make a preliminary judgment on the lowering depth of the rebar cage by observing the position of the float.

[0043] When the reinforcing cage is lowered to near the design elevation, a precise positioning operation is performed. The ball head at the bottom of the centering rod of the RTK measuring equipment is placed inside the precision-machined positioning opening 1013 on the top of the floating assembly 1. The center point of this positioning opening 1013 is precisely aligned with the axis of the upright 202, thus maintaining consistency with the center of the reinforcing cage. By measuring the three-dimensional coordinates (X, Y, H) of this point in real time using the RTK equipment, the actual elevation of the top of the reinforcing cage and its planar center position can be accurately calculated. Based on the measurement results, the hoisting equipment is directed to make fine adjustments until the reinforcing cage is precisely in place.

[0044] After construction is completed or when relocation is required, the barb of the floating component 1 can be easily removed from the hanging part 203 at the top of the pole 202 to achieve quick separation, which is convenient for storage and reuse.

[0045] In one embodiment, the float 101 includes a cylindrical portion 1011, a conical shell portion 1012, and a floating plate 1014.

[0046] The bottom end of the cylindrical part 1011 is integrally provided with a conical shell part 1012. The top end of the cylindrical part 1011 is closed and recessed downward to form a positioning opening 1013. The positioning opening 1013 is used to position the ball head at the bottom of the centering rod of the RTK measuring equipment. The float 1014 is fixedly sleeved on the outside of the cylindrical part 1011.

[0047] As a marker component, when the floating platform 1014 is observed to be submerged in water during use, it indicates that the steel cage has been lowered to the appropriate position.

[0048] In one embodiment, a drain outlet 1015 is provided at the bottom end of the positioning port 1013, and a drain pipe 1016 is connected to the drain outlet 1015. One end of the drain pipe 1016 away from the drain outlet 1015 is connected to the side of the cylinder 1011, and the connection between the drain pipe 1016 and the cylinder 1011 is located above the floating plate 1014.

[0049] During the process of lowering the steel cage, liquid inside may splash into the positioning port 1013. The liquid can be drained out through the designed drain port 1015 and drain pipe 1016.

[0050] In one embodiment, a first hole is formed on the side of the sleeve rod 102, and a row of holes 103a is formed on the side of the adjustable rod 103. The adjustable rod 103 slides inside the sleeve rod 102 to adjust its position, aligning one of the holes in the row of holes 103a with the first hole, and then the bolt assembly 104 is installed. The bolt assembly 104 includes a bolt 1041, a washer 1042, and a nut 1043, all of which are made of stainless steel.

[0051] In one embodiment, the top of the sleeve 102 is located in the inner cavity of the float 101, and the top of the sleeve 102 is closed to prevent liquid from entering the inner cavity of the float 101 through the sleeve 102.

[0052] The surface of the floating component 1 should be anodized to make it corrosion resistant.

[0053] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0054] It should be understood that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. This invention is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. An auxiliary positioning device for reinforcing cages in bored piles, comprising: Positioning frame (2) and floating assembly (1); The feature is that the positioning sleeve (2) includes: a cross positioning rod (201), a vertical pole (202) is fixedly connected to the center of the cross positioning rod (201) vertically upward, and a hanging piece (203) is installed at the top of the vertical pole (202); The floating assembly (1) includes: a float (101), the top of the float (101) is provided with a positioning port (1013), the bottom end of the float (101) is fixedly connected with a sleeve rod (102), an adjustable rod (103) is slidably provided on the inner side of the sleeve rod (102), and the sleeve rod (102) and the adjustable rod (103) are fixedly connected by a bolt assembly (104); The bottom end of the adjustable rod (103) is provided with a hook (103b).

2. The auxiliary positioning device for the reinforcing cage of a bored pile according to claim 1, characterized in that, The floating body (101) includes: The cylindrical part (1011) has a conical shell part (1012) integrally provided at the bottom end of the cylindrical part (1011), and the top end of the cylindrical part (1011) is closed and recessed downward to form a positioning opening (1013). A floating roof (1014) is fixedly sleeved on the outside of the cylindrical part (1011).

3. The auxiliary positioning device for the reinforcing cage of a bored pile according to claim 2, characterized in that: The bottom end of the positioning port (1013) is provided with a drain port (1015), and a drain pipe (1016) is connected to the drain port (1015). The end of the drain pipe (1016) away from the drain port (1015) is connected to the side of the cylinder (1011), and the connection between the drain pipe (1016) and the cylinder (1011) is located above the floating plate (1014).

4. The auxiliary positioning device for the reinforcing cage of a bored pile according to claim 1, characterized in that: The sleeve rod (102) has a first hole on its side, and the adjustable rod (103) has a drain hole (103a) on its side.

5. The auxiliary positioning device for the reinforcing cage of a bored pile according to claim 4, characterized in that, The bolt assembly (104) includes: a bolt (1041), a washer (1042), and a nut (1043).

6. The auxiliary positioning device for the reinforcing cage of a bored pile according to claim 1, characterized in that: The top of the sleeve (102) is located inside the cavity of the float (101), and the top end of the sleeve (102) is closed.

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