A fine positioning device for underwater bridge piers with small radius curve control

Abstract

This invention discloses a fine positioning device for underwater bridge piers with small-radius curved alignment control, comprising a first side rod, a second side rod, and at least one cross rod. The first side rod, at least one cross rod, and the second side rod are sequentially hinged together. Guide holes are provided at the ends of the first and second side rods away from the cross rods, and outer marker rods are slidably connected within the guide holes. Hinges are rotatably connected at the hinge points of the first side rod, at least one cross rod, and the second side rod, and a secondary rod is slidably connected within the hinge sleeves. Two marker lines are spaced apart at the upper ends of both the outer marker rod and the secondary rod. This invention divides the arc into several segments, uses the outer marker rod and secondary rod as reference points to drive steel pipes into the water, and employs steel caisson technology for underwater pier casting, facilitating positioning and reference, thus improving the underwater positioning accuracy of small-radius curved bridges.

Description

Technical Field

[0001] This invention relates to the field of bridge pier construction technology, and in particular to a fine positioning device for underwater bridge piers with small radius curve alignment control. Background Technology

[0002] With the continuous improvement of my country's economic level, the construction of transportation infrastructure is also developing rapidly. For the construction of highway ramps or bridges with main beams featuring small radii of curvature, hoisting methods are often used. This requires first pouring concrete for the bridge piers. Due to the small radius of curvature and the positioning base points being underwater with poor visibility, pier positioning is inconvenient and affects subsequent bridge construction. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fine positioning device for underwater bridge piers with small radius curve control, thereby solving the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A fine positioning device for underwater bridge piers with small radius curve control includes a first side rod, a second side rod, and at least one cross rod, wherein the first side rod, at least one cross rod, and the second side rod are sequentially hinged together.

[0006] An outer marker rod is provided at the end of the first side rod and the second side rod that is away from the crossbar;

[0007] A secondary rod is provided at the hinge joint between the first side rod, at least one cross rod, and the second side rod.

[0008] Preferably, the first side rod and the second side rod are provided with guide holes at the ends away from the crossbar, the outer marking rod is slidably connected in the guide holes, and the middle part of the outer marking rod is threadedly connected to the support tube.

[0009] Preferably, the hinge joints of the first side rod, at least one crossbar, and the second side rod are all rotatably connected to hinge sleeves, and a secondary rod is slidably connected inside the hinge sleeve. Two marking lines are spaced apart on the upper ends of the outer marking rod and the secondary rod, and a counterweight is fixedly connected to the lower end of the secondary rod.

[0010] Preferably, the auxiliary rod includes an upper support rod and a lower support rod. The upper end of the lower support rod is provided with a mounting groove. The lower end of the upper support rod is fixedly connected to a round rod. The lower end of the round rod is fixedly connected to a hinge ball. The hinge ball is spherically hinged to the bottom of the mounting groove.

[0011] Preferably, an annular air cushion is fixedly connected to the outer side of the round rod, and the annular air cushion is in support contact with the inner wall of the mounting groove, which has a conical structure.

[0012] Preferably, the first side bar, the cross bar, and the second side bar are all provided with a separation device. The separation device includes a separation groove, which divides the first side bar into a first rod and a second rod. One end of the first rod is fixedly connected to a dovetail insert, and the second rod is provided with a dovetail slot. The dovetail insert and the dovetail slot are adapted to each other.

[0013] Preferably, a support sleeve is fixedly connected to the outer side of the second rod, the first rod and the second rod are slidably connected to a sliding sleeve, and a support spring is fixedly connected between the sliding sleeve and the support sleeve.

[0014] The advantages of this invention are as follows: The underwater bridge pier precision positioning device for small radius curved line control provided by this invention divides the arc into several parts, uses the outer marker rod and the auxiliary rod as reference points to drive steel pipes, and uses steel caisson technology to cast the pier in the water, which facilitates positioning and reference, thereby improving the underwater positioning accuracy of small radius curved line bridges.

[0015] This invention uses the lower support rod at the lower end of the auxiliary rod to be firmly inserted, and the upper support rod can swing with the lower support rod as a reference, and finally be reset by the support of the annular air cushion. The verticality is checked by the marking line, which makes the positioning accuracy of the steel pipe high and facilitates the control of the construction accuracy of the bridge pier. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the basic structure of the present invention;

[0017] Figure 2 This is the front view of the present invention;

[0018] Figure 3 yes Figure 2 Enlarged view of section E in the image;

[0019] Figure 4 This is a schematic diagram of the separation device of the present invention;

[0020] Figure 5 This is a schematic diagram of the secondary rod of the present invention;

[0021] Figure 6 yes Figure 5 Enlarged view of part F in the image Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] Example 1

[0024] like Figure 1-6As shown, this invention provides a fine positioning device for underwater bridge piers with small radius curve alignment control, comprising a first side rod 1, a second side rod 2, and at least one cross rod 3. The first side rod 1, at least one cross rod 3, and the second side rod 2 are sequentially hinged together. Guide holes 10 are provided at the ends of the first side rod 1 and the second side rod 2 away from the cross rod 3, and an outer marking rod 4 is slidably connected within the guide holes 10. A hinge sleeve 5 is rotatably connected at the hinge joints of the first side rod 1, at least one cross rod 3, and the second side rod 2, and a secondary rod 6 is slidably connected within the hinge sleeve 5. Two marking lines 41 are spaced apart at the upper ends of both the outer marking rod 4 and the secondary rod 6. The outer marking rod 4 and the secondary rod 6 are respectively used to mark coordinate points and vertically inserted into the underwater stabilizing layer via the marking lines 41. The positioning equipment and operating principle are existing technologies and will not be elaborated here. By dividing the arc into several parts, the outer marking rod 4 and the secondary rod 6 are inserted using vibratory hammering or pre-drilled holes. Steel pipes are driven into the system using the outer marking rod 4 and the secondary rod 6 as reference points, and the underwater pier is cast using steel caisson technology. Steel caisson technology is a mature existing construction process. Its specific principles will not be elaborated here. It facilitates positioning and reference, thereby improving the underwater positioning accuracy of small-radius curved bridges.

[0025] The outer marker rod 4 is threadedly connected to the support tube 42 in the middle. This facilitates the adjustment of the elevation of the first side rod 1 and the second side rod 2, and makes it easy for the first side rod 1, the second side rod 2, and at least one crossbar 3 to emerge from the water surface for subsequent positioning.

[0026] Specifically, the lower end of the secondary rod 6 is fixedly connected to a counterweight 61. The secondary rod 6 includes an upper support rod 62 and a lower support rod 63. An installation groove 64 is provided at the upper end of the lower support rod 63. A round rod 65 is fixedly connected to the lower end of the upper support rod 62. A hinged ball 66 is fixedly connected to the lower end of the round rod 65. The hinged ball 66 is spherically hinged to the bottom of the installation groove 64. An annular air cushion 67 is fixedly connected to the outside of the round rod 65. The annular air cushion 67 is in support contact with the inner wall of the installation groove 64. The installation groove 64 has a conical structure. After the lower end of the secondary rod 6 is positioned and fixed at the coordinate point by the counterweight 61, when the steel pipe is driven in with the secondary rod 6 as the reference, the positioning inside the steel pipe with the secondary rod may cause the secondary rod 6 to accidentally deviate from its axis, causing the secondary rod 6 to deviate from the reference. This would mean the secondary rod 6 would not serve as a positioning reference after the steel pipe is finally in place, easily leading to construction errors. With the lower support rod 63 firmly inserted at the lower end of the secondary rod 6, the upper support rod 62 can swing with the lower support rod 63 as the reference. The auxiliary pole 6 is a lightweight pole with buoyancy. The lightweight pole is made of PVC pipe and is supported and reset by an annular air cushion 67. The verticality is checked by the marking line 41, which makes the positioning accuracy of the steel pipe high and facilitates the control of the pier construction accuracy.

[0027] Separation devices 8 are provided for the first side bar 1, the cross bar 3, and the second side bar 2. The separation devices for the cross bar 3 and the second side bar 2 are the same as those for the first side bar 1. The separation device 8 includes a separation groove 81, which divides the first side bar 1 into a first rod 82 and a second rod 83. One end of the first rod 82 is fixedly connected to a dovetail insert 84, and the second rod 83 is provided with a dovetail slot 85, which is adapted to the dovetail insert 84. Both the dovetail slot 85 and the dovetail insert 84 are arc-shaped with the hinge point or rotation point as the reference, which facilitates the rotation of the first rod 82 around the outer marking rod 4, so that the dovetail insert 84 separates from the dovetail slot 85. A support sleeve 86 is fixedly connected to the outside of the second rod 83. The first rod 82 and the second rod 83 are slidably connected to a sliding sleeve 87, and a support spring 88 is fixedly connected between the sliding sleeve 87 and the support sleeve 86. After the sliding sleeve 87 is removed, the dovetail insert 84 separates from the dovetail slot 85, making it easy to disassemble the corresponding first side rod 1, leaving the outer marking rod 4 and the auxiliary rod 6 for subsequent construction positioning.

[0028] The construction principle involves dividing the arc into several sections, using the outer marker rod 4 and the secondary rod 6 as reference points to drive steel pipes into the water, and then using steel caisson technology to pour the underwater foundation. This facilitates positioning and reference, thereby improving the underwater positioning accuracy of the small-radius curved bridge.

[0029] Furthermore, by firmly inserting the lower support rod 63 at the lower end of the auxiliary rod 6, the upper support rod 62 can swing with the lower support rod 63 as a reference, and finally be restored by the support of the annular air cushion 67. The verticality is checked by the marking line 41, which makes the positioning accuracy of the steel pipe high and facilitates the control of the construction accuracy of the bridge pier.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fine positioning device for underwater bridge piers with small radius curve control, characterized in that: Specifically designed for underwater small-radius curved bridge pier alignment control and foundation casting positioning, including a first side rod (1), a second side rod (2) and at least one cross rod (3), wherein the first side rod (1), at least one cross rod (3) and the second side rod (2) are sequentially hinged together; An outer marker rod (4) is provided at the end of the first side rod (1) and the second side rod (2) away from the cross rod (3); A secondary rod (6) is provided at the hinge joint between the first side rod (1), at least one of the cross rods (3) and the second side rod (2); The first side rod (1) and the second side rod (2) are provided with guide holes (10) at the ends away from the cross rod (3). The outer marking rod (4) is slidably connected in the guide hole (10). The middle part of the outer marking rod (4) is threadedly connected to the support tube (42). The hinge joints of the first side rod (1), at least one of the cross rods (3) and the second side rod (2) are all rotatably connected to the hinge sleeve (5), the secondary rod (6) is slidably connected inside the hinge sleeve (5), two marking lines (41) are provided at intervals on the upper ends of the outer marking rod (4) and the secondary rod (6), and the lower end of the secondary rod (6) is fixedly connected to the counterweight block (61). The first side bar (1), the cross bar (3) and the second side bar (2) are all equipped with separation devices (8).

2. The underwater bridge pier precision positioning device with small radius curve line control according to claim 1, characterized in that: The auxiliary rod (6) includes an upper support rod (62) and a lower support rod (63). The lower support rod (63) has an installation groove (64) at its upper end. The upper support rod (62) is fixedly connected to a round rod (65) at its lower end. The round rod (65) is fixedly connected to a hinge ball (66) at its lower end. The hinge ball (66) is spherically hinged to the bottom of the installation groove (64).

3. The underwater bridge pier precision positioning device with small radius curve line control according to claim 2, characterized in that: The outer side of the round rod (65) is fixedly connected to an annular air cushion (67), and the annular air cushion (67) is in contact with the inner wall of the mounting groove (64). The mounting groove (64) has a conical structure.

4. The underwater bridge pier precision positioning device with small radius curve line control according to claim 1, characterized in that: The separation device (8) includes a separation groove (81) that divides the first side rod (1) into a first rod (82) and a second rod (83). One end of the first rod (82) is fixedly connected to a dovetail insert (84), and the second rod (83) is provided with a dovetail slot (85). The dovetail insert (84) is adapted to the dovetail slot (85).

5. The underwater bridge pier precision positioning device with small radius curve line control according to claim 4, characterized in that: The second rod (83) is fixedly connected to the support sleeve (86) on the outside. The first rod (82) and the second rod (83) are slidably connected to the sliding sleeve (87). The sliding sleeve (87) and the support sleeve (86) are fixedly connected to the support spring (88).

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