Large-span concrete-filled steel tube arch bridge arch rib bridge site installation butt joint structure

Abstract

The utility model discloses a large span concrete filled steel tube arch bridge arch rib bridge location installation butt joint structure, which comprises an arch rib and a flange plate fixedly connected at the end part of the arch rib, the arch rib comprises a chord pipe and a plurality of rib plates fixedly connected inside the chord pipe, the flange plate is fixedly connected at the end parts of the rib plates, the flange plate is fixedly connected with a first sleeve in a circular truncated cone shape, and the first sleeve is fixedly connected with a second sleeve. When the arch ribs are in butt joint, the small ends of the circular truncated cones of the first sleeves on the two arch ribs are arranged at the two ends of the second sleeves in a penetrating mode respectively, the second sleeves are internally provided with circular truncated cone-shaped inner cavities matched with the first sleeves in appearance, and the outer walls of the chord pipes are fixedly connected with a plurality of connecting plates used for hanging dragging hoists. The first sleeve and the second sleeve are arranged, the pulling block is arranged to adjust the spatial position of the arch rib, alignment and sleeving of the arch rib are facilitated, the anti-shearing and anti-bending section is larger, the stress strength is higher compared with an existing mode that a flange plate is connected through a bolt, the safety in the construction process of a large-span arch bridge can be greatly improved, and the construction efficiency is improved. The construction cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, in particular to an arch rib bridge installation butt joint structure for a large-span steel tube concrete arch bridge. Background Art

[0002] Currently, during the construction of steel tube arch bridges, it is necessary to lift the arch ribs by cable hoisting, and adjust the spatial position of the arch ribs during the lifting process, so that the flange of the lifted arch ribs is docked with the installed segmental farad, and then the two flanges are fixedly connected to complete the docking of the arch ribs; this arch rib installation method makes it difficult to align the flanges between the two arch ribs when the arch ribs are docked, and when bolts are used to bear the shear force between the two arch ribs, the strength requirements of the bolts are high, and the construction cost is high. Utility Model Content

[0003] The utility model aims to provide a large-span steel tube concrete arch bridge arch rib bridge installation butt joint structure to solve the problems raised by the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-span steel tube concrete arch bridge arch rib bridge installation docking structure, including an arch rib and a flange fixedly connected to the end of the arch rib, the arch rib including a chord tube and a plurality of ribs fixedly connected inside the chord tube, the flange fixedly connected to the end of the rib plate, a truncated cone-shaped first sleeve fixedly connected to the flange, when the arch ribs are docked, the truncated cone small ends of the first sleeves on the two arch ribs are respectively inserted into the two ends of the second sleeve, and a truncated cone-shaped inner cavity matching the shape of the first sleeve is provided inside the second sleeve, and a plurality of connecting plates for hanging towing hoists are fixedly connected to the outer wall of the chord tube.

[0005] Furthermore, a supporting channel steel is fixedly connected to the flange plate, and a side wall of the first sleeve is fixedly connected to an inner wall of the supporting channel steel.

[0006] The first casing is supported by the supporting channel steel to improve the stress-bearing strength of the first casing.

[0007] Furthermore, the pulling hoist includes an angle-adjusting pulling hoist obliquely connected between the arch ribs and a spacing-adjusting pulling hoist laterally connected between the arch ribs.

[0008] By setting up pulling hoists at multiple angles and adjusting the spatial position of the arch ribs, it is more convenient to align the first sleeve at the arch rib joint, thereby improving the efficiency of arch bridge construction.

[0009] Furthermore, it also includes a multi-section sleeve plate fixedly connected between two butted arch ribs, wherein both ends of the multi-section sleeve plate are respectively fixedly connected to the ends of the chord tubes of the two butted arch ribs and the multi-section sleeve plate is spliced ​​into a hollow tube with the same diameter as the chord tube.

[0010] The sleeve is set on the chord tube at the joint of the arch rib to further strengthen it, so as to improve the force strength and force uniformity at the joint of the arch rib. The sleeve can also seal the joint of the arch rib to prevent rainwater or other debris from falling into the chord tube of the arch rib.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model arranges a first sleeve and a second sleeve at the joint of the arch rib, the first sleeve is truncated, the second sleeve is provided with an inner cavity matching the shape of the first sleeve, and a pulling hoist is arranged on the chord tube for convenient adjustment of the spatial position of the arch rib, which facilitates the alignment and sleeve connection work when the arch ribs are joined, and the sleeve connection has a larger shear and bending resistance section, and the force strength is higher than the existing method of connecting flanges by bolts, which can greatly improve the safety during the construction of large-span arch bridges and reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the arch rib installation butt joint structure of the long-span concrete-filled steel tube arch bridge provided by the embodiment of the utility model;

[0014] Figure 2 yes Figure 1 The cross-section at Ⅰ-Ⅰ in the middle;

[0015] Figure 3 yes Figure 1 Cross-section at II-II;

[0016] Figure 4 It is a schematic diagram of the arch rib lifting provided by the embodiment of the utility model;

[0017] Figure 5 This is a schematic diagram of the connection of a hand chain hoist provided in an embodiment of the utility model;

[0018] Figure 6 It is a schematic diagram of the explosion of the sleeve provided by the embodiment of the utility model;

[0019] In the figure, 1-arch rib, 2-rib plate, 3-flange, 4-first casing, 5-second casing, 6-support channel steel, 7-connecting plate, 8-pulling hoist, 11-chord tube, 12-casing plate, 81-spacing-adjusting pulling hoist, 82-angle-adjusting pulling hoist. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 6 The utility model provides a technical solution: a large-span steel tube concrete arch bridge arch rib bridge installation docking structure, comprising an arch rib 1 and a flange 3 fixedly connected to the end of the arch rib 1, the arch rib 1 comprising a chord tube 11 and a plurality of ribs 2 fixedly connected inside the chord tube 11, the flange 3 fixedly connected to the end of the rib 2, a truncated cone-shaped first sleeve 4 fixedly connected to the flange 3, a supporting channel steel 6 fixedly connected to the flange 3, a side wall of the first sleeve 4 fixedly connected to the inner wall of the supporting channel steel 6, when the arch ribs 1 are docked, the truncated cone small ends of the first sleeves 4 on the two arch ribs 1 are respectively penetrated at the two ends of the second sleeve 5, and a truncated cone-shaped inner cavity matching the shape of the first sleeve 4 is arranged inside the second sleeve 5, a plurality of connecting plates 7 for hanging a pulling hoist 8 are fixedly connected to the outer wall of the chord tube 11, and the pulling hoist 8 comprises a spacing adjusting pulling hoist 81 transversely connected between the arch ribs 1 and an angle adjusting pulling hoist 82 obliquely connected between the arch ribs 1.

[0022] When the arch ribs 1 are connected, one end of the second sleeve 5 is first sleeved on the first sleeve 4 of the installed arch rib 1 segment and fixed, and the arch rib 1 to be connected is lifted by a crane. The lifted arch rib 1 is pulled in the air by the spacing adjustment pull hoist 81 and the angle adjustment pull hoist 82, so as to adjust the spatial position of the arch rib 1, and the first sleeve 4 of the arch rib 1 to be connected is sleeved into the other end of the second sleeve 5 to complete the connection of the arch ribs 1.

[0023] After the arch ribs 1 are butt-jointed, a sleeve plate 12 is welded at the joint of the arch ribs 1. The two ends of the sleeve plate 12 are respectively fixedly connected to the ends of the chord tubes 11 of the two butt-jointed arch ribs 1. Multiple sections of sleeve plates 12 are spliced ​​and welded to form a hollow tube with the same diameter as the chord tube 11, and the joint of the arch ribs 1 is closed. After the connection is completed, the pulling hoist 8 is removed for the connection of the next section of the arch rib 1.

[0024] It should be noted that the pulling hoist 8 is a commercial component purchased on the market, and its specific model specifications need to be selected and determined according to the actual specifications of the device. The selection method adopts the existing technology in this field, so it will not be described in detail.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A butt joint structure for installing the arch rib of a long-span concrete-filled steel tube arch bridge, comprising an arch rib and a flange fixedly connected to the end of the arch rib, wherein the arch rib comprises a chord tube and a plurality of ribs fixedly connected inside the chord tube, and the flange is fixedly connected to the end of the rib, characterized in that: A first truncated cone-shaped sleeve is fixedly connected to the flange. When the arch ribs are butt-jointed, the small truncated cone ends of the first sleeve on the two arch ribs are respectively passed through the two ends of the second sleeve, and a truncated cone-shaped inner cavity matching the shape of the first sleeve is provided inside the second sleeve. A plurality of connecting plates for hanging a pulling hoist are fixedly connected to the outer wall of the chord tube.

2. The long-span concrete-filled steel tube arch bridge arch rib installation docking structure according to claim 1 is characterized by: A supporting channel steel is fixedly connected to the flange plate, and a side wall of the first sleeve is fixedly connected to an inner wall of the supporting channel steel.

3. The long-span concrete-filled steel tube arch bridge arch rib installation docking structure according to claim 1 is characterized by: The pulling hoist comprises an angle-adjusting pulling hoist obliquely connected between the arch ribs and a spacing-adjusting pulling hoist laterally connected between the arch ribs.

4. The long-span steel tube concrete arch bridge arch rib bridge installation docking structure according to claim 1 is characterized by: It also includes a multi-section sleeve plate fixedly connected between two butted arch ribs, wherein both ends of the multi-section sleeve plate are respectively fixedly connected to the ends of the chord tubes of the two butted arch ribs, and the multi-section sleeve plate is spliced ​​into a hollow tube with the same diameter as the chord tube.

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