Guiding device for improving vibration sinking perpendicularity of steel pipe pile of steel cofferdam

Abstract

The utility model relates to a guiding device for improving the vibration sinking perpendicularity of a steel cofferdam steel pipe pile, an auxiliary steel pipe is used as a fixing piece for fixing a guiding frame assembly, the guiding frame assembly and limiting round steel define a horizontal limiting space through which the steel pipe pile can pass, and the horizontal direction during vibration sinking of the steel pipe pile is limited through the horizontal limiting space. It is guaranteed that the steel pipe piles can be vertically inserted into river soil, and it is avoided that the steel pipe piles incline or move to cause lock catches to crack and damage, water leakage of the steel cofferdam is caused, and the quality of bridge pier and abutment foundations is affected; the guide device does not influence the lock catch occlusion of the steel pipe pile and the adjacent steel pipe pile, is applied to the vibration sinking process of the steel pipe pile of the steel cofferdam, and greatly improves the construction efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a guiding device for improving the verticality of vibration sinking of steel pipe piles of steel cofferdams. Background Art

[0002] A cofferdam refers to a temporary retaining structure built for the construction of permanent water conservancy facilities in water conservancy project construction. Its function is to prevent water and soil from entering the construction site of the building so that water can be drained, foundation pits can be excavated, and buildings can be built. In bridge foundation construction, when bridge piers and platform foundations are built in rivers with deep water and high flow rates, multiple steel pipe piles are usually inserted in the river, and the steel pipe piles are fitted together to form a rectangular steel cofferdam; each steel pipe pile is vibrated and sunk into the river in turn. During the vibration and sinking, the lock position on the steel pipe pile must be aligned first, and then the vibration and sinking work is carried out. When the vibration and sinking is completed, the steel pipe piles are connected; however, during the vibration and sinking, the verticality of the steel pipe pile is difficult to control, resulting in cracking and breaking of the lock, which seriously affects the water-proof property of the steel cofferdam.

[0003] The invention patent with the patent publication number CN107653885A discloses a vertical guide structure for prefabricated pipe pile construction, in which a horizontal concrete plate is fixed on the soil layer, and a guide pipe is fixed on the horizontal concrete plate. The guide pipe serves as a guide component for the pipe pile to ensure that the pipe pile is vertical to the soil during piling. When the above patent solution is used, the pipe pile needs to pass through the guide pipe and be limited by the guide pipe. It is not suitable for guiding the steel pipe piles that need to be connected with adjacent steel pipe piles. Utility Model Content

[0004] The utility model aims to solve the problem that the verticality of the steel pipe piles of the steel cofferdam is difficult to control, thereby providing a device capable of guiding and limiting the position when the steel pipe piles are vibrated and sunk.

[0005] The utility model solves the above problems and adopts the following technical solutions:

[0006] A guide device for improving the verticality of steel pipe piles for steel cofferdams, comprising an auxiliary steel pipe and a guide frame assembly, wherein at least two auxiliary steel pipes are respectively inserted on both sides of the steel pipe piles to be vibrated and sunk, and opposite guide frame brackets are fixed on the auxiliary steel pipes on both sides, and the guide frame assembly is fixed on the top of the guide frame brackets;

[0007] The guide frame assembly includes two parallel clamping beams and at least one connecting beam arranged on the two clamping beams, a limiting round steel is fixed on the side of the connecting beam, the front end of the limiting round steel extends toward the side wall of the steel pipe pile and the end is in contact with the side wall of the steel pipe pile; the steel pipe pile adjacent to the steel pipe pile to be vibrated and sunk, the limiting round steel and the two clamping beams of the guide frame assembly form a horizontal limiting space, or the two limiting round steels on both sides of the steel pipe pile and the middle of the two clamping beams of the guide frame assembly form a horizontal limiting space, and the steel pipe pile to be vibrated and sunk passes through the horizontal limiting space to complete the vibration sinking.

[0008] Compared with the prior art, the utility model adopting the above technical solution has the following beneficial effects:

[0009] The auxiliary steel pipe of the utility model is used as a fixing part for fixing the guide frame assembly. The guide frame assembly and the limiting round steel form a horizontal limiting space in the middle through which the steel pipe pile can pass. The horizontal limiting space limits the horizontal direction of the steel pipe pile during vibration and sinking, thereby ensuring that the steel pipe pile can be vertically inserted into the river soil, avoiding the steel pipe pile from tilting or shifting, resulting in cracking and damage of the lock buckle, causing water leakage in the steel cofferdam, and affecting the quality of the bridge piers and platform foundations. The guide device does not affect the connection between the steel pipe pile and the adjacent steel pipe piles through the lock buckle, and is applied in the vibration and sinking process of the steel pipe piles of the steel cofferdam, which greatly improves the construction efficiency.

[0010] As a preferred embodiment, a further technical solution of the utility model is:

[0011] The two clamping beams of the guide frame assembly are transverse I-beams, and the connecting beam is a longitudinal I-beam. The longitudinal I-beam is fixed to the upper ends of the two transverse I-beams, and the limiting round steel is vertically welded to the side wall of the longitudinal I-beam. Through the above structure, the transverse I-beam limits the up and down direction of the steel pipe pile, the longitudinal I-beam serves as the base for fixing the limiting round steel, and the limiting round steel limits the left and / or right direction of the steel pipe pile to ensure the verticality of the steel pipe pile.

[0012] The upper edge of each transverse I-beam is provided with a plurality of bolt holes spaced along its length direction, and both ends of the longitudinal I-beam are provided with U-shaped clips for clamping, and the front end of the U-shaped clip passes through the corresponding bolt holes and is fixed by nuts. The position of the longitudinal I-beam on the transverse I-beam can be quickly adjusted by the U-shaped clips.

[0013] A plurality of auxiliary steel pipes are provided, and each auxiliary steel pipe is arranged at intervals on both sides along the vibrating steel pipe pile.

[0014] The limiting round steel is wrapped with a rubber sleeve to avoid damage caused by hard contact between the limiting round steel and the steel pipe pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view schematic diagram of vibrating and sinking the first steel pipe pile using the guide device;

[0016] Figure 2 It is a top view schematic diagram of using the guide device to vibrate and sink the remaining steel pipe piles;

[0017] Figure 3 It is a front view of the steel pipe pile limited by the guide frame assembly;

[0018] Figure 4 is a side view of a steel pipe pile limited by a guide frame assembly;

[0019] In the figure: 1. Auxiliary steel pipe; 2. Guide frame bracket; 3. Longitudinal I-beam; 4. Horizontal I-beam; 5. Bolt hole; 6. Limiting round steel; 7. Locking buckle; 8. U-shaped buckle. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0021] See attached Figure 1-4 The present embodiment discloses a guiding device for improving the verticality of steel pipe pile vibration sinking of steel cofferdam, which is applied in the steel pipe pile vibration sinking construction process, and comprises an auxiliary steel pipe 1 and a guiding frame assembly, wherein at least two auxiliary steel pipes 1 are respectively inserted at the inner and outer sides of the steel pipe pile to be vibrated and sunk, and the auxiliary steel pipes 1 at both sides are fixed with relative guiding frame brackets 2, and the guiding frame assembly is fixed at the top of the guiding frame brackets 2;

[0022] The guide frame assembly includes two parallel clamping beams and at least one connecting beam arranged on the two clamping beams, a limiting round steel 6 is fixed on the side of the connecting beam, the front end of the limiting round steel 6 extends toward the side wall of the steel pipe pile, and the front end head of the limiting round steel 6 is in contact with the side wall of the steel pipe pile; the steel pipe pile adjacent to the steel pipe pile to be vibrated and the front end of the limiting round steel 6 and the two clamping beams of the guide frame assembly form a horizontal limiting space, or the front end of the limiting round steel 6 and the two clamping beams of the guide frame assembly form a horizontal limiting space, and the steel pipe pile to be vibrated passes through the horizontal limiting space to complete the vibration sinking.

[0023] In this embodiment, the guide frame bracket 2 is made of I-beam, and a horizontal I-beam and an inclined I-beam are welded on the side wall of the auxiliary steel pipe 1 from top to bottom in sequence. The front ends of the horizontal I-beam and the inclined I-beam are welded and fixed, and the horizontal I-beam, the inclined I-beam and the auxiliary steel pipe 1 form a triangular stable structure, which plays a supporting role.

[0024] In this embodiment, the two clamping beams of the guide frame assembly are transverse I-beams 4, and the connecting beam is a longitudinal I-beam 3. The spacing between the two transverse I-beams 4 is equal to the outer diameter of the steel pipe pile. The lower side of the transverse I-beam 4 is welded to the guide frame bracket 2. Preferably, the lower side of the transverse I-beam 4 is welded to the front end of the horizontal I-beam of the guide frame bracket 2. The side of the transverse I-beam 4 is flush with the front edge of the horizontal I-beam to prevent the steel pipe pile from touching the guide frame bracket 2 and causing damage when it passes through the guide frame and vibrates downward; the longitudinal I-beam 3 is fixed to the two transverse I-beams 4. At the upper end, specifically, the upper edges of the two transverse I-beams 4 are provided with a plurality of bolt holes 5 spaced apart along the length direction thereof, and both ends of the longitudinal I-beam 3 are clamped by U-shaped buckles 8, the front ends of the U-shaped buckles 8 pass through the corresponding bolt holes 5 and are fixed by nuts, and the U-shaped buckles 8 are galvanized U-shaped pipe clamps, which are fixed by gaskets and nuts after passing through the bolt holes 5; the position of the longitudinal I-beam 3 on the transverse I-beam 4 can be quickly adjusted and fixed by the U-shaped buckles 8 and the bolt holes 5, and the limiting round steel 6 is vertically welded to the side of the longitudinal I-beam 3. Through the above structure, the transverse I-beam 4 limits the up and down direction of the steel pipe pile, and the longitudinal I-beam 3 serves as a base for fixing the limiting round steel 6, and the limiting round steel 6 limits the left and / or right directions of the steel pipe pile to ensure the verticality of the steel pipe pile.

[0025] The steel pipe piles of most existing steel cofferdam projects adopt two sizes of φ630mm*10mm or φ820mm*14mm. The insertion position of the auxiliary steel pipe 1 of this embodiment is determined according to the diameter and position of the steel pipe pile. There are multiple auxiliary steel pipes 1 in this embodiment, and each auxiliary steel pipe 1 is arranged at intervals in the river on the inner and outer sides along the vibrating sinking steel pipe pile. Specifically, the interval between two adjacent auxiliary steel pipes 1 on the same side is 8m-12m.

[0026] In this embodiment, the limiting round steel 6 is wrapped with a rubber sleeve to avoid damage caused by hard contact between the limiting round steel 6 and the steel pipe pile.

[0027] When the steel pipe pile is vibrated and sunk by the guide device of the present embodiment, a plurality of auxiliary steel pipes 1 are inserted at equal intervals in the river inside and outside the predetermined position along the steel pipe pile, so that the lower end of the auxiliary steel pipe 1 is inserted into the river, and the weight can be increased by placing heavy objects in the auxiliary steel pipe 1 to increase the stability of the auxiliary steel pipe 1; a guide frame bracket 2 is welded on the side wall of the auxiliary steel pipe 1, and two transverse I-beams 4 are respectively hoisted to the plurality of guide frame brackets 2 on both sides and welded and fixed, so that the two transverse I-beams 4 are parallel to the steel pipe pile line, and on the side of the longitudinal I-beam 3, the guide frame bracket 2 is welded to the side wall of the auxiliary steel pipe 1, and the guide frame bracket 2 is welded to the guide frame bracket 2 on both sides, so that the two transverse I-beams 4 are parallel to the steel pipe pile line, and on the side of the longitudinal I-beam 3, the guide frame bracket 2 is welded to the guide frame bracket 2 on both sides ... and the guide frame bracket The limiting round steels 6 are welded on the surface, and the longitudinal I-beams 3 are hoisted and placed on the transverse I-beams 4; when the first steel pipe pile along the steel pipe pile line is vibrated and sunk, two longitudinal I-beams 3 are installed and fixed above the transverse I-beams 4, and the limiting round steels 6 on the longitudinal I-beams 3 are relative, both facing the middle, and the horizontal limiting space surrounded by the front ends of the two limiting round steels 6 on both sides and the two transverse I-beams 4 is located above the position of inserting the first steel pipe pile, the first steel pipe pile is hoisted and passed through the horizontal limiting space and hoisted into the river, and then the first steel pipe pile is vibrated and sunk. During the vibration sinking process, the transverse I-beams The horizontal position of the first steel pipe pile is limited by the I-beam 4 and the limiting round steel 6 to prevent the steel pipe pile from tilting or shifting; when the second steel pipe pile on the right side along the line of the steel pipe pile is vibrated, a longitudinal I-beam 3 is installed and fixed above the transverse I-beam 4, and the limiting round steel 6 on the longitudinal I-beam 3 faces the position to be vibrated and sunk of the second steel pipe pile, and the second steel pipe pile is hoisted above the position to be vibrated and sunk, and the positions of the lock buckles 7 on the first steel pipe pile and the second steel pipe pile are made corresponding, and the front ends of the first steel pipe pile and the limiting round steel 6 and the two transverse I-beams 4 form a horizontal limiting space The space is located above the position for inserting the second steel pipe pile, the second steel pipe pile is hoisted into the river through the horizontal limit space, and then the second steel pipe pile is vibrated and sunk. During the hoisting and vibrating process, the lock buckles 7 of the first steel pipe pile and the second steel pipe pile are gradually merged, and the transverse I-beam 4 and the limiting round steel 6 limit the upper, lower and right sides of the second steel pipe pile to prevent the steel pipe pile from tilting or shifting. After the second steel pipe pile is vibrated and sunk, the first steel pipe pile and the second steel pipe pile are connected by the lock buckle; and so on, the remaining steel pipe piles are vibrated and sunk by this guide device.

[0028] In this embodiment, the auxiliary steel pipe 1 of the utility model is used as a fixing part for fixing the guide frame assembly. The guide frame assembly and the limiting round steel 6 enclose a horizontal limiting space in the middle through which the steel pipe pile can pass. The horizontal limiting space limits the horizontal direction of the steel pipe pile during vibration and sinking, thereby ensuring that the steel pipe pile can be vertically inserted into the river soil, avoiding the steel pipe pile from tilting or shifting, causing the lock buckle 7 to crack and be damaged, causing the steel cofferdam to leak, and affecting the quality of the bridge piers and platform foundations; the guide device does not affect the engagement of the steel pipe pile with the locking buckle 7 of the adjacent steel pipe pile, and is applied to the vibration and sinking process of the steel pipe piles of the steel cofferdam, which greatly improves the construction efficiency.

[0029] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A guiding device for improving the verticality of the vibration sinking of steel pipe piles of steel cofferdams, characterized by: It comprises an auxiliary steel pipe (1) and a guide frame assembly, wherein at least two auxiliary steel pipes (1) are respectively inserted on both sides of a steel pipe pile to be vibrated and sunk, and opposite guide frame brackets (2) are fixed to the auxiliary steel pipes (1) on both sides, and the guide frame assembly is fixed to the top of the guide frame brackets (2); The guide frame assembly comprises two parallel clamping beams and at least one connecting beam arranged on the two clamping beams, a limiting round steel (6) is fixed on the side of the connecting beam, the front end of the limiting round steel (6) extends toward the side wall of the steel pipe pile and the end is in contact with the side wall of the steel pipe pile; the steel pipe pile adjacent to the steel pipe pile to be vibrated and sunk, the limiting round steel (6) and the two clamping beams of the guide frame assembly form a horizontal limiting space, or the two limiting round steels (6) on both sides of the steel pipe pile and the middle of the two clamping beams of the guide frame assembly form a horizontal limiting space, and the steel pipe pile to be vibrated and sunk passes through the horizontal limiting space to complete the vibrating and sinking.

2. The guiding device for improving the verticality of the steel pipe pile vibration sinking of the steel cofferdam according to claim 1 is characterized in that: The two clamping beams of the guide frame assembly are transverse I-beams (4), the connecting beam is a longitudinal I-beam (3), the longitudinal I-beam (3) is fixed to the upper ends of the two transverse I-beams (4), and the limiting round steel (6) is vertically welded to the side wall of the longitudinal I-beam (3).

3. The guiding device for improving the verticality of the steel pipe pile vibration sinking of the steel cofferdam according to claim 2 is characterized in that: A plurality of bolt holes (5) are provided at intervals along the length direction of the upper edges of the two transverse I-beams (4), and both ends of the longitudinal I-beams (3) are provided with U-shaped buckles (8) for clamping, and the front ends of the U-shaped buckles (8) pass through the corresponding bolt holes (5) and are fixed by nuts.

4. The guiding device for improving the verticality of the steel pipe pile vibration sinking of the steel cofferdam according to claim 1 is characterized in that: A plurality of auxiliary steel pipes (1) are provided, and the auxiliary steel pipes (1) are arranged at intervals on both sides along the vibrating steel pipe pile.

5. The guiding device for improving the verticality of the steel pipe pile vibration sinking of the steel cofferdam according to claim 1 is characterized in that: The limiting round steel (6) is wrapped with a rubber sleeve.

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