Arch steel beam mounting method

Abstract

The invention discloses a method for installing a steel beam on an arch. The method comprises the following steps that S1, an arch ring, a stand column on the arch, a cable and a cantilever hanging bracket are built; s2, the single steel beam is transported to the position below an arch ring of the bridge in a water transportation mode; s3, the cantilever hanging bracket lifts the single steel beam; s4, a lifting hook is installed, and relay lifting is conducted through the lifting hook of the cable; s5, the single steel beam is fixed to a support transverse partition plate of the on-arch stand column; s6, splicing and assembling of a plurality of single steel beams on the same side are completed; and S7, a winch of the cantilever hanging bracket is adjusted to the other side, and the single steel beam on the other side of the arch ring is hoisted and installed. The steel beams on the arch are large super-wide and super-heavy components, and a large amount of transportation cost can be saved when the steel beams are transported on water compared with highway transportation; after the steel beam is transported to a bridge site, a method of directly hoisting and mounting on water is adopted, so that the transfer process from water to land is avoided, the transfer cost is reduced, and the land transportation road construction cost and the assembly site construction cost are also avoided.

Description

Technical Field

[0001] The invention relates to the field of bridge construction, and in particular to a method for installing an arch steel beam. Background Art

[0002] See also Figure 1 The main components of a top-supported arch bridge are: arch ring, arch columns, arch main beam, and the main beam is the road surface. When constructing the arch ring, a large-tonnage cable crane is usually deployed to hoist the arch ring rigid frame. For the double-sided I-shaped arch steel beam, the conventional construction method is: after the construction of the arch ring and arch columns is completed, the arch steel beam is hoisted longitudinally one span at a time by a cable crane.

[0003] When the steel beam on the arch is constructed by cable crane, it is required that the steel beam can be transported to one end of the bridge head. In some cases, such as the mountain roads are curved and narrow, land transportation is inconvenient, while the river under the bridge is unobstructed and water transportation is convenient. If the steel beam on the arch continues to be constructed by the above method, it will need to increase the land road construction fee, bridge head assembly site construction fee, land acquisition and demolition fee and other fees, which are quite expensive.

[0004] Therefore, in the case where land transportation is inconvenient, water transportation under the bridge is unobstructed, and cable cranes have been used in the arch ring construction, a convenient installation construction method for the steel beam on the arch is provided. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a method for installing an arch steel beam.

[0006] An embodiment of the present invention solves the technical problem by adopting a technical solution: a method for installing an arch steel beam, comprising the following steps:

[0007] S1, constructing an arch ring, arch columns, cables and cantilever hangers; the arch columns are arranged above the arch ring;

[0008] S2, transport the single steel beam to the bottom of the bridge arch by water transport;

[0009] S3, the cantilever hanger lifts the single steel beam and moves it to the pier top support position of the arch upper column;

[0010] S4. Install the hook and hoist the single steel beam to the designed bridge span position or the vertical support position of the steel beam through the cable hook relay hoisting;

[0011] S5, fix the single steel beam to the supporting diaphragm of the arch column;

[0012] S6, repeating steps S1 to S5 to complete the assembly of multiple single-piece steel beams on the same side;

[0013] S7. Adjust the winch of the cantilever hanger to the other side to lift and install the single steel beam on the other side of the arch ring.

[0014] Optionally, the cantilever hanger is arranged above the arch ring or the column on the arch.

[0015] Optionally, at least two cantilever hangers are arranged at intervals.

[0016] Optionally, the cantilever hanger is in a "T"-shaped structure, including a longitudinal support frame and a transverse cantilever frame arranged above the longitudinal support frame; the winch can be movably arranged on the transverse cantilever frame.

[0017] Optionally, a cantilever hanger directly arranged above the arch ring is provided with a bottom pedestal platform below the longitudinal support frame; the bottom pedestal platform is provided with a pedestal support position flush with the pier top support position of the arch upper column.

[0018] Optionally, in step S4, one end of the monolithic steel beam is provided with at least two hanging points; the hook can suspend the monolithic steel beam by switching from one side of the cantilever hanger to the other side by changing the position of the hanging point.

[0019] Optionally, in step S5, a single steel beam is fixed to the side of the support diaphragm and is laterally fixed by overlapping temporary fixing plates.

[0020] The beneficial effects of the present invention are as follows: a single steel beam is lifted on the side of the arch ring by water transportation, and the cable crane relay is used for longitudinal lifting and moving. The advantages are as follows: 1. The steel beam on the arch is a large, ultra-wide and ultra-heavy component. The steel beam production site is usually far away from the bridge construction site. The use of water transportation for steel beams can save a lot of transportation costs compared to road transportation; 2. After the steel beam is transported to the bridge site by water, a direct water lifting and installation method is used, which avoids the transfer process from water to land, reduces the transfer cost, and also avoids the land transportation road construction cost and assembly site construction cost.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a schematic diagram of the steel beam construction of a deck arch bridge in the prior art;

[0024] Figure 2 This is a schematic diagram of the construction of the steel beam on the arch of the present invention;

[0025] Figure 3 It is a construction schematic diagram of the cantilever hanger lifting the steel beam on the arch ring or the column on the arch in step S3 of the present invention;

[0026] Figure 4 This is a schematic diagram of the mobile construction of the installation hook relay hoisting a single steel beam in step S4 of the present invention;

[0027] Figure 5 It is a schematic structural diagram of a support diaphragm of a single steel beam fixed to an upper column of an arch in step S5 of the present invention.

[0028] Description of main component symbols:

[0029] 10. Arch ring; 20. Arch column; 21. Pier top support position; 30. Cable; 31. Hook; 40. Cantilever hanger; 41. Winch; 42. Longitudinal support frame; 43. Horizontal cantilever frame; 44. Bottom base frame; 45. Base frame support position; 50. Single steel beam; 60. Steel beam vertical support; 70. Support cross partition; 71. Temporary fixing plate. DETAILED DESCRIPTION

[0030] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0031] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0034] Example

[0035] Reference Figures 1 to 5 The present invention provides a method for installing an arch steel beam, comprising the following steps:

[0036] S1, constructing an arch ring 10, an arch column 20, a cable 30 and a cantilever hanger 40; the arch column 20 is arranged above the arch ring 10;

[0037] S2, transporting the single steel beam 50 to the bottom of the arch ring 10 of the bridge by water transport;

[0038] S3, the cantilever hanger 40 lifts the single steel beam 50 and moves it to the pier top support position 21 of the arch column 20;

[0039] S4, installing the hook 31, and hoisting the single steel beam 50 to the designed bridge span position or the steel beam vertical support 60 position through the hook 31 of the cable 30;

[0040] S5, fixing the single steel beam 50 to the support diaphragm 70 of the arch upper column 20;

[0041] S6, repeating steps S1 to S5 to complete the assembly of multiple single-piece steel beams 50 on the same side;

[0042] S7, the winch 41 of the cantilever hanger 40 is adjusted to the other side to lift and install the single steel beam 50 on the other side of the arch ring 10.

[0043] In the present invention, the single steel beam 50 is lifted on the side of the arch ring 10 by water transportation, and the cable 30 is used for longitudinal lifting and moving. The advantages are as follows: 1. The steel beam on the arch is a large, ultra-wide and ultra-heavy component. The steel beam production site is usually far away from the bridge construction site. Compared with road transportation, the steel beam can save a lot of transportation costs by water transportation; 2. After the steel beam is transported to the bridge site by water, it is directly lifted and installed by water, which avoids the transfer process from water to land, reduces the transfer cost, and also avoids the land transportation road construction cost and assembly site construction cost.

[0044] See also Figure 3 and Figure 4In this embodiment, the cantilever hanger 40 is arranged above the arch ring 10 or the arch upper column 20. The top hoist 41 of the cantilever hanger 40 maintains a uniform height.

[0045] Specifically, in order to facilitate the lifting of the single steel beam 50 , at least two cantilever hangers 40 are arranged at intervals.

[0046] In this embodiment, the cantilever hanger 40 is a "T"-shaped structure, including a longitudinal support frame 42 and a transverse cantilever frame 43 disposed above the longitudinal support frame 42; the hoist 41 is movably disposed on the transverse cantilever frame 43. The transverse cantilever frame 43 provides a transverse activity space for the hoist 41, so as to conveniently lift and laterally move the position of the single steel beam 50, so as to move the steel beam to the pier top support position 21 or to the other side of the arch ring 10 for lifting operation.

[0047] For further information, see Figure 3 The cantilever hanger 40 is directly arranged above the arch ring 10, and a bottom pedestal 44 is arranged below the longitudinal support frame 42; the bottom pedestal 44 is provided with a pedestal support position 45 flush with the pier top support position 21 of the arch upper column 20. The bottom pedestal 44 extends the height of the cantilever hanger 40, and provides a pedestal support position 45 flush with the pier top support position 21 for placing a single steel beam 50, so that the sling can longitudinally drag the single steel beam 50 for longitudinal movement.

[0048] See also Figure 4 In step S4, the single steel beam 50 is provided with at least two hanging points at one end; the hook 31 can suspend the single steel beam 50 by switching from one side of the cantilever hanger 40 to the other side by changing the hanging point position.

[0049] The specific lifting process of the single steel beam 50 and the relay lifting process of the hook 31 is as follows:

[0050] Step 1: The single steel beam 50 is lifted by the cantilever hanger 40 and moved horizontally to the pier top support position 21, and the cable 30 hook 31 is installed; Step 2: The single steel beam 50 is lifted by the cable 30 and moved longitudinally to the steel beam vertical support 60 of the arch ring 10, and then dropped and stopped; Step 3: The cable 30 changes the hook 31 to the right lifting point, lifts and moves longitudinally until the designed span position. Through the above lifting and hook 31 relay process, the water lifting of the single steel beam 50 and the longitudinal long-distance span position movement can be realized.

[0051] See also Figure 5In this embodiment, in step S5, the single steel beam 50 is fixed to the side of the support transverse diaphragm 70 and is laterally fixed by overlapping the temporary fixing plate 71. The support transverse diaphragm is arranged on the top of the arch column 20, and the single steel beam 50 is temporarily fixed and supported by the temporary fixing plates 71 on both sides.

[0052] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A method for installing an arch steel beam, characterized in that: The steps include: S1, constructing an arch ring (10), an arch column (20), a cable (30) and a cantilever hanger (40); the arch column (20) is arranged above the arch ring (10); S2, transporting the single steel beam (50) to the bottom of the arch ring (10) of the bridge by water transport; S3, the cantilever hanger (40) lifts the single steel beam (50) and moves it to the pier top support position (21) of the arch column (20); S4, installing the hook (31), and hoisting the single steel beam (50) to the designed bridge span position or the steel beam vertical support (60) position through the hook (31) of the cable (30); S5, fixing the single steel beam (50) to the support diaphragm (70) of the arch upper column (20); S6, repeating steps S1 to S5 to complete the assembly of multiple single-piece steel beams (50) on the same side; S7. The hoist (41) of the cantilever hanger (40) is adjusted to the other side to lift and install the single steel beam (50) on the other side of the arch ring (10).

2. The method for installing an arch steel beam according to claim 1, characterized in that: The cantilever hanger (40) is arranged above the arch ring (10) or the arch upper column (20).

3. The method for installing an arch steel beam according to claim 2, characterized in that: At least two cantilever hangers (40) are arranged at intervals.

4. The method for installing an arch steel beam according to claim 2, characterized in that: The cantilever hanger (40) is in a "T"-shaped structure, comprising a longitudinal support frame (42) and a transverse cantilever frame (43) arranged above the longitudinal support frame (42); the winch (41) is movably arranged on the transverse cantilever frame (43).

5. The method for installing an arch steel beam according to claim 4, characterized in that: A cantilever hanger (40) is directly arranged above the arch ring (10), and a bottom pedestal (44) is arranged below the longitudinal support frame (42); the bottom pedestal (44) is provided with a pedestal support position (45) that is flush with the pier top support position (21) of the arch upper column (20).

6. The method for installing an arch steel beam according to claim 1, characterized in that: In step S4, the single steel beam (50) is provided with at least two hanging points at one end; the hook (31) can suspend the single steel beam (50) by switching from one side of the cantilever hanger (40) to the other side by changing the position of the hanging point.

7. The method for installing an arch steel beam according to claim 1, characterized in that: In step S5, the single steel beam (50) is fixed to the side of the support diaphragm (70) and is laterally fixed by overlapping with a temporary fixing plate (71).

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