Accurate butt joint limiting device suitable for vertical swivel bridge

Abstract

The utility model belongs to the technical field of bridge construction, and particularly relates to an accurate butt joint limiting device suitable for a vertical swivel bridge. Comprising an upper rotating body and a fixed end tower base. The upper rotating body is connected with the bottom end of a bridge tower of a bridge; a first rotating body rotating shaft seat is arranged at the bottom edge of one side of the upper rotating body; the fixed end tower base is fixedly connected with a bridge floor of a bridge, a second rotating body rotating shaft base is arranged on the top edge of one side of the fixed end tower base, and the second rotating body rotating shaft base is rotationally connected with the first rotating body rotating shaft base through a pin shaft; a plurality of guide limiting columns are arranged on the outer side face of the fixed end tower base and surround the fixed end tower base, the height of the guide limiting columns is higher than that of the fixed end tower base, and the side face of the higher section is chamfered from outside to inside and from high to low to form a landslide structure facing the interior of the fixed end tower base. After the upper rotating body drives the bridge tower to rotate to the vertical position, the upper rotating body can be in butt joint with the fixed end tower base. The device is simple in structure, can effectively and quickly position the butt joint of the upper rotating body and the fixed end tower base, does not need additional adjustment and alignment procedures, reduces construction errors, and greatly accelerates the construction progress.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and in particular relates to a precise docking limit device suitable for a vertical rotating bridge. Background Art

[0002] The application of bridge rotation construction technology has greatly improved the construction conditions and is safe and reliable. Especially when the bridge under construction crosses a high mountain canyon with deep water and fast current, the main structure is made on the shore site, and the rotation construction technology is used to erect the structure to the designed point, which can reduce high-altitude operations, avoid the threat of floods, and avoid the difficulties of machinery and equipment and processes such as arch frame or cable lifting. The internal force of the structure is also easy to adjust and control. During the rotation process, the shaft is often used as the main positioning and force transmission component. During the rotation process, due to the manufacturing error of the shaft and the elastic deformation during the rotation process, it is difficult to align the upper and lower structures of the bridge rotation. Before the bridge tower finally falls to the bite surface, the inertia speed of the structure is fast and difficult to control. If the falling displacement deviation is large due to force majeure or uncertain factors, it is difficult to correct the deviation through other measures when it is finally closed. In the past, no better measures were adopted during the rotation process. Finally, the splicing welds were added and the pads were used for local adjustments. The appearance was ugly, and the risk of stress concentration was increased. It even changed the force transmission path of the structure, resulting in reduced structural safety and durability. Summary of the invention

[0003] The utility model aims to provide a precise docking limit device suitable for vertical rotating bridges, which has long durability, convenient construction and high accuracy.

[0004] The utility model provides a precise docking and limiting device suitable for a vertical rotating bridge, comprising an upper rotating body, a fixed end tower seat and a guide limiting column;

[0005] The upper rotating body is connected to the bottom end of the bridge tower of the bridge, a first rotating body shaft seat is provided at the bottom edge of one side of the upper rotating body, and a pressure rod connecting seat is provided in the middle of a side opposite to the bottom edge of the rotating body shaft seat;

[0006] The fixed end tower seat is fixedly connected to the bridge deck, and a second rotating shaft seat is provided on the top edge of one side of the fixed end tower seat. The second rotating shaft seat corresponds to the first rotating shaft seat and is rotatably connected via a pin shaft.

[0007] The bottom surface shape of the fixed end tower base matches the top surface shape of the upper rotating body. After the upper rotating body drives the bridge tower to rotate to a vertical position, it can be docked with the fixed end tower base.

[0008] There are several guide limit columns, which are arranged around the outer side surface of the fixed end tower base; the guide limit columns are vertically upward, and the cross-section is T-shaped when viewed from above, and the bottom end of the vertical section of the T is fixedly connected to the side surface of the fixed end tower base; the height of the guide limit columns is higher than the height of the fixed end tower base, and the side surface of the raised section is beveled from outside to inside and from high to low, forming a landslide structure facing the inside of the fixed end tower base.

[0009] When the upper rotating body drives the bridge tower to rotate from a horizontal position to a vertical position, the upper rotating body can follow the sliding structure of the guide limit columns arranged around the side walls of the fixed-end tower base, and slowly slide in along the guide limit columns accurately and dock with the fixed-end tower base; no additional position correction adjustment is required.

[0010] The utility model has a simple structure, can effectively and quickly locate the docking of the upper rotating body and the fixed end tower seat, does not need additional adjustment and alignment procedures, reduces construction errors, and greatly speeds up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a top view of the structure of the fixed end tower base of the utility model.

[0012] Figure 2 It is a schematic diagram of the combined state of the utility model and the main tower of the bridge body.

[0013] Figure 3 The figure is a side view of the upper rotating body and the fixed end tower base of the utility model. The dotted line part is the docking state of the upper rotating body when it is actually rotating close to the fixed end tower base.

[0014] The numbers in the figure are: 1 is the upper swivel, 2 is the fixed end tower seat, 3 is the guide limit column, 4 is the first swivel shaft seat, 5 is the second swivel shaft seat, and 6 is the pressure rod connecting seat. DETAILED DESCRIPTION

[0015] The utility model is used to build a single-tower cable-stayed bridge, with a tower-pier-beam consolidation system. The main tower is a concrete structure below the bridge deck and a steel structure above the bridge deck. The tower is 82m high above the bridge deck. The side span main beam is a concrete double-sided beam. The main beam of the main tower is a double-sided box structure. The main tower of this bridge body adopts an arched tower column, which is located on the machine-non-machine separation zone. The tower column is a parabola 72m above the bridge deck, and the arched cross beam at the top of the bridge tower adopts an elliptical line. The bridge tower is a special-shaped box section, with an elliptical curve on the outside, a straight line along the bridge direction and the inside, and a steel structure on the upper tower column.

[0016] The main tower of the bridge body is completed and in a horizontal state; the utility model comprises an upper rotating body 1, a fixed end tower base 2 and a guide limit column 3;

[0017] The upper rotating body 1 is arranged at the bottom end of the main tower of the bridge body, and a first rotating body shaft seat 4 is arranged at the bottom edge of one side of the upper rotating body 1, and a pressure rod connecting seat 6 is arranged at the middle part of a side opposite to the bottom edge of the rotating body shaft seat;

[0018] The fixed end tower seat 2 is fixedly connected to the bridge deck of the bridge body, and a second rotating shaft seat 5 is provided on the top edge of one side of the fixed end tower seat 2. The second rotating shaft seat 5 corresponds to the first rotating shaft seat 4 in position and is rotatably connected via a pin shaft.

[0019] The bottom surface shape of the fixed end tower base 2 matches the top surface shape of the upper rotating body 1. After the upper rotating body 1 drives the bridge tower to rotate to a vertical position, it can be docked with the fixed end tower base 2.

[0020] A number of guide limiter columns 3 are arranged on the outer surface of the fixed end tower base 2 and around the fixed end tower base 2; the guide limiter columns 3 are arranged vertically upward, and the cross section is a T-shaped structure when viewed from above, and the bottom end of the vertical section of the T-shaped structure is welded and fixedly connected to the side of the fixed end tower base; the height of the guide limiter columns 3 is higher than the height of the fixed end tower base, and the side of the higher section is beveled from outside to inside and from high to low, forming a landslide structure toward the fixed end tower base; the guide limiter columns 3 are evenly arranged along the fixed end wall plate, with an arrangement spacing of 400~600mm. Among them, the position of the second rotating shaft seat 5 of the fixed end tower base 2 does not need to be arranged with guide limiter columns 3 due to the rotation interference problem.

[0021] The bridge tower is pulled up by the existing conventional rotating triangular frame system, and the rotating triangular frame system connects the compression rod and the compression rod connecting seat 6; Figure 2 As shown; when the upper rotating body 1 drives the bridge tower to rotate from the horizontal state to the vertical position, the upper rotating body 1 can follow the sliding structure of the guide limit column 3 arranged around the side wall of the fixed end tower seat, accurately slide along the guide limit column 3 and accurately match and dock with the fixed end tower seat 2; no additional position correction adjustment is required; as shown Figure 3 shown.

[0022] After the rotation is completed, the outer guide limit column 3 of the fixed end tower base 2 can be removed.

[0023] The utility model utilizes the deadweight of the vertical rotating body to slide along the smooth surface, and limits the vertical rotating structure within a predetermined range through the guiding action of the sliding surfaces at multiple positions, so as to achieve accurate docking of the upper and lower parts of the structure after rotation.

[0024] The size of the guide limit column 3 is calculated and designed according to the situation. For example, the welding end of the T-shaped guide limit column can be 300-500 mm long, the bevel length is 200 mm, the slope is 1:2, and the entire bevel side to the cantilever root needs to be polished to ensure the smoothness of the cross section;

[0025] After the construction of the utility model, automatic and accurate docking can be achieved during the rotation and docking process, and there is no need for reinforcement and correction after rotation. After use, only the outer guide limit column needs to be cut off without damage to the main structure. After grinding, it can be decorated and sprayed without affecting the appearance. It can be widely used in the rotation process of bridge towers / arch ribs of vertical rotating cable-stayed bridges, arch bridges and suspension bridges, and has the characteristics of economy and rationality, ensuring structural safety, high efficiency and speed.

[0026] Although the above methods are illustrated and described as a series of structures for simplicity of explanation, it should be understood and appreciated that these methods are not specifically limited because according to one or more embodiments, some structures may occur in different orders and / or concurrently with other actions from those illustrated and described herein or not illustrated and described herein but understandable to those skilled in the art.

[0027] The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A precise docking limiter suitable for a vertical rotating bridge, characterized in that: It includes an upper rotating body, a fixed end tower base and a guide limit column; The upper rotating body is connected to the bottom end of the bridge tower of the bridge, a first rotating body shaft seat is provided at the bottom edge of one side of the upper rotating body, and a pressure rod connecting seat is provided in the middle of a side opposite to the bottom edge of the rotating body shaft seat; The fixed end tower seat is fixedly connected to the bridge deck, and a second rotating shaft seat is provided on the top edge of one side of the fixed end tower seat. The second rotating shaft seat corresponds to the first rotating shaft seat and is rotatably connected via a pin shaft. The bottom surface shape of the fixed end tower base matches the top surface shape of the upper rotating body. After the upper rotating body drives the bridge tower to rotate to a vertical position, it can be docked with the fixed end tower base. There are several guide limit columns, which are arranged around the outer side surface of the fixed end tower base; the guide limit columns are vertically upward, and the cross-section viewed from above is a T-shaped structure, and the bottom end of the vertical section of the T is fixedly connected to the side surface of the fixed end tower base; the height of the guide limit column is higher than the height of the fixed end tower base, and the side surface of the raised section is beveled from outside to inside and from high to low, forming a landslide structure facing the inside of the fixed end tower base.

2. The precise docking limiter according to claim 1, characterized in that: The guide limit columns are evenly arranged along the fixed end tower base wall plate, with an arrangement spacing of 400-600 mm.

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