Gantry crane track beam support device and support method for bridge construction

Abstract

The present invention proposes a gantry crane track beam support device for bridge construction, which is arranged on a main beam body, and a track beam is erected on the main beam body along the axial direction of the bridge, including shear nails and distribution beams; a plurality of rows of shear nails are evenly arranged on the main beam body along the axial direction of the bridge, and the shear nails are used to fix the distribution beam on the main beam body; a plurality of distribution beams are evenly arranged on the main beam body along the axial direction of the bridge, and the extension direction of each distribution beam is perpendicular to the axial direction of the bridge, and each distribution beam is arranged in parallel, and each distribution beam is arranged between two rows of shear nails, and the spacing between adjacent distribution beams is not more than twice the spacing between two adjacent rows of shear nails; the track beam is spanned on the plurality of distribution beams; the distribution beam is laid on the main beam body, and then the track beam is spanned on the distribution beam, so as to reduce the stress deformation generated on the track beam, avoid the track beam from sinking downward and bending outward, and thus avoid adverse effects on the normal operation of the gantry crane.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a gantry crane track beam supporting device and a supporting method for bridge construction. Background Art

[0002] Currently, in bridge construction, a construction plan of "beam first, arch second, main beam segment installation, and arch rib bracket assembly" is commonly used. After the steel main beam is installed, brackets are set up on the main beam, and then the arch ribs are installed in place using a gantry crane. Therefore, a gantry crane track beam is laid on the bridge beam surface.

[0003] During the actual construction process, technicians found that when the gantry crane wheel group was running on the track beam, the pressure of the gantry crane's own weight on the track beam would cause vertical stress and transverse stress on the track beam at the same time, causing the track beam to sag downward and twist laterally.

[0004] Researchers have discovered that the stresses on the track beam vary when the beam is empty and when it is fully loaded, potentially hindering the movement of the gantry crane wheels on the beam and affecting their braking. Reducing the negative impact of the gantry crane on the track beam is a pressing issue for technical personnel. Summary of the Invention

[0005] In view of this, the present invention proposes a gantry crane track beam support device and support method for bridge construction, which is used to solve the problem that when the gantry crane works on the track beam, the track beam will cause stress deformation, thereby hindering the operation of the gantry crane.

[0006] The technical solution of the present invention is implemented as follows: the present invention provides a gantry crane track beam support device for bridge construction, which is arranged on the main beam body, and the track beam is erected on the main beam body along the axial direction of the bridge, including shear nails and distribution beams; several rows of shear nails are evenly arranged on the main beam body along the axial direction of the bridge, and the shear nails are used to fix the distribution beam on the main beam body; several distribution beams are evenly arranged on the main beam body along the axial direction of the bridge, and the extension direction of each distribution beam is perpendicular to the axial direction of the bridge. Each distribution beam is arranged in parallel, and each distribution beam is arranged between two rows of shear nails. The spacing between adjacent distribution beams is not more than twice the spacing between two adjacent rows of shear nails; the track beam spans several distribution beams.

[0007] On the basis of the above technical solution, preferably, when the gantry crane is fully loaded, the contact portion between the distribution beam and the track beam is welded, and both sides of the contact portion between the distribution beam and the track beam are fully welded.

[0008] On the basis of the above technical solution, preferably, it also includes a reinforcement plate; a number of small longitudinal beams are arranged under the main beam body, and a transverse partition is arranged between each small longitudinal beam; the reinforcement plates are symmetrically arranged on both sides of the extension direction of the distribution beam along the extension direction of the distribution beam, the reinforcement plates are fixedly connected to the main beam body, and each reinforcement plate is located above the transverse partition or above the small longitudinal beam.

[0009] More preferably, when the gantry crane is fully loaded, the contact parts of the distribution beam and the reinforcement plate are welded and double-sided fillet welding is performed.

[0010] More preferably, it also includes a limit card plate. When the gantry crane is fully loaded, the limit card plate is set on the track beam, and the limit card plate is used to limit the movement of the wheel group along the track beam.

[0011] More preferably, the limiting clamping plate is welded to the track beam and is welded by double-sided fillet welding.

[0012] On the other hand, the present invention also provides a method for supporting a gantry crane track beam for bridge construction, using the above-mentioned supporting device, comprising the following steps:

[0013] Step 1: Evenly arrange several rows of shear studs along the axial direction of the bridge on the main beam, and set distribution beams between two adjacent rows of shear studs. The distribution beams are evenly arranged along the axial direction of the bridge, and the spacing between adjacent distribution beams is twice the spacing between two adjacent rows of shear studs. The extension direction of each distribution beam is perpendicular to the axial direction of the bridge. Track beams are straddled on the distribution beams. When the gantry crane is unloaded, the gantry crane's wheel groups can move on the track beams.

[0014] Step 2: Preset several gantry crane full-load ranges on the track beam, set distribution beams between every two adjacent rows of shear studs below each full-load range, and move each wheel group of the gantry crane to each full-load range one by one;

[0015] Step three: set a limit plate on the track beam. The limit plate is used to limit the wheel groups of the gantry crane from moving out of the full load range, so that the gantry crane is fully loaded.

[0016] On the basis of the above technical solution, preferably, in step one, after a distribution beam is set between two adjacent rows of shear studs, reinforcement plates can be symmetrically set along the axis of the distribution beam on both sides of each distribution beam, each reinforcement plate is fixedly connected to the main beam body, and each reinforcement plate is set above the small longitudinal beam or transverse diaphragm of the bridge.

[0017] On the basis of the above technical solution, preferably, in step 2, the full load range is centered at the contact point between the wheel set and the track beam, and the full load range is not less than 1.2m.

[0018] The gantry crane track beam support device and support method for bridge construction of the present invention have the following beneficial effects compared with the prior art:

[0019] (1) The present invention arranges a distribution beam on the main beam body, and then arranges a track beam across the distribution beam to reduce the stress deformation generated on the track beam, avoid the track beam from sinking downward and bending outward, and thus avoid adverse effects on the normal operation of the gantry crane.

[0020] (2) The method adopted by the present invention is to distribute the distribution beams throughout the full load range centered on the contact point between the wheel set and the track beam when the gantry crane is fully loaded, thereby significantly offsetting the stress deformation generated on the track beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a front view schematic diagram of the supporting device of the gantry crane in the no-load state of the present invention;

[0023] Figure 2 It is a top view schematic diagram of the supporting device of the gantry crane in an unloaded state according to the present invention;

[0024] Figure 3 It is a front view schematic diagram of the supporting device of the gantry crane in a fully loaded state according to the present invention;

[0025] Figure 4 It is a schematic top view of the supporting device of the gantry crane in a fully loaded state according to the present invention;

[0026] Figure 5 is a side view schematic diagram of the support device of the present invention;

[0027] Figure 6 is a front view schematic diagram of another embodiment of the support device of the present invention;

[0028] Figure 7 It is a side view schematic diagram of another embodiment of the support device of the present invention.

[0029] In the figure: 1. Main beam; 2. Track beam; 3. Shear studs; 4. Distribution beam; 5. Reinforcement plate. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1:

[0032] like Figure 1 As shown, combined Figure 2 The present invention relates to a gantry crane track beam support device for bridge construction. The device is mounted on a main beam 1, on which a track beam 2 is mounted along the bridge axis. The main beam 1 can be a box beam, with several small longitudinal beams disposed below the main beam 1, and transverse partitions disposed between the small longitudinal beams.

[0033] The present invention includes shear studs 3 and distribution beams 4.

[0034] Among them, several rows of shear nails 3 are evenly distributed on the main beam body 1 along the axial direction of the bridge. In addition to offsetting the shear force between the connection parts of the box beams of the main beam body 1, the shear nails 3 can also be used to fix the distribution beam 4 on the main beam body 1.

[0035] Several distribution beams 4 are evenly arranged on the main beam body 1 along the axial direction of the bridge. The extension direction of each distribution beam 4 is perpendicular to the axial direction of the bridge. Each distribution beam 4 is arranged in parallel. Each distribution beam 4 is arranged between two rows of shear nails 3. The spacing between adjacent distribution beams 4 is not greater than twice the spacing between two adjacent rows of shear nails 3.

[0036] The track beam 2 is straddled on a plurality of distribution beams 4 . Therefore, when stress deformation occurs in the track beam 2 , the distribution beams 4 provided below the track beam 2 provide support, thereby offsetting the adverse effects of the stress.

[0037] Specifically, when the dead weight of the wheelset generates a downward pressure on the track beam 2, the track beam 2 will be concave due to stress. Therefore, a distribution beam 4 is set under the track beam 2 for support, which can share the downward pressure of the wheelset and thus reduce the adverse effects on the track beam 2. When the gantry crane is unloaded, the gravity of the wheelset is small, so the distribution beams 4 under the track beam 2 can be arranged at intervals. However, when the gantry crane is fully loaded, the downward pressure on the track beam 2 is large, so the distribution beams 4 under the track beam 2 are fully distributed.

[0038] Similarly, for the outward bending deformation of the track beam 2, since a certain depression also occurs on the distribution beam 4, the distribution beam 4 forms an oblique support for both sides of the track beam 2, thereby offsetting the outward squeezing stress of the track beam 2.

[0039] Example 2:

[0040] Since horizontal force is generated when the gantry crane is started or braked, if this horizontal force is directly transmitted to the distribution beam 4, the distribution beam 4 will be subjected to significant out-of-plane bending. In order to avoid this problem, based on the first embodiment, as shown in FIG. Figure 1 As shown, combined Figure 6 and Figure 7 , also includes a reinforcing plate 5.

[0041] Among them, the reinforcing plates 5 are symmetrically arranged on both sides of the distribution beam 4 along the extension direction of the distribution beam 4. The reinforcing plates 5 are fixed to the main beam body 1. Each reinforcing plate 5 is located above the transverse partition or above the small longitudinal beam, which can prevent the distribution beam 4 from bending outward.

[0042] Example 3:

[0043] On the basis of the second embodiment, a limiting clamping plate is further included.

[0044] Among them, when the gantry crane is fully loaded, a limit clamp is set on the track beam 2, and the limit clamp is used to limit the movement of the wheel group along the track beam 2.

[0045] Example 4:

[0046] On the basis of the third embodiment, specifically, the distribution beam 4 is fixedly connected to the main beam body 1 and the reinforcement plate 5 , so there are certain requirements for the welding method and the length of the weld.

[0047] Specifically, when the gantry crane is fully loaded, the contact parts between the distribution beam 4 and the track beam 2 are welded, and both sides of the contact parts between the distribution beam 4 and the track beam 2 are fully welded; the contact parts between the distribution beam 4 and the reinforcement plate 5 are welded, and are welded as double-sided fillet welds; the limit clamping plate is welded to the track beam 2, and are welded as double-sided fillet welds.

[0048] Embodiment 5:

[0049] like Figure 1 As shown, combined Figure 3 、 Figure 4 and Figure 5 A method for supporting a gantry crane track beam for bridge construction according to the present invention, using the supporting device of the third embodiment, comprises the following steps:

[0050] Step one: evenly arrange several rows of shear nails 3 on the main beam 1 along the axial direction of the bridge, set distribution beams 4 between two adjacent rows of shear nails 3, and arrange several distribution beams 4 equidistantly along the axial direction of the bridge. The spacing between adjacent distribution beams 4 is twice the spacing between two adjacent rows of shear nails 3. The extension direction of each distribution beam 4 is perpendicular to the axial direction of the bridge. Rail beams 2 are spanned on several distribution beams 4. When the gantry crane is unloaded, the wheel groups of the gantry crane can move on the rail beams 2.

[0051] Step 2: preset several gantry crane full load ranges on the track beam 2, set distribution beams 4 between each two adjacent rows of shear studs 3 below each full load range, and move each wheel group of the gantry crane to each full load range one by one; specifically, the full load range takes the contact point between the wheel group and the track beam 2 as the midpoint, and the full load range is not less than 1.2m.

[0052] Step three, set a limit card on the track beam 2, the limit card is used to limit the wheel groups of the wheel gantry crane from moving out of the full load range, so that the gantry crane is fully loaded.

[0053] Example 6:

[0054] On the basis of Example 5, in step 1, after the distribution beam 4 is set between two adjacent rows of shear studs 3, reinforcement plates 5 can be set symmetrically along the axis of the distribution beam 4 on both sides of each distribution beam 4, and each reinforcement plate 5 is fixedly connected to the main beam body 1, and each reinforcement plate 5 is set above the small longitudinal beam or cross diaphragm of the bridge.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gantry crane track beam support device for bridge construction, arranged on a main beam body (1), on which a track beam (2) is erected along the axial direction of the bridge, characterized in that: It includes shear studs (3) and distribution beams (4); Several rows of shear nails (3) are evenly arranged on the main beam body (1) along the axial direction of the bridge, and the shear nails (3) are used to fix the distribution beam (4) on the main beam body (1); A plurality of distribution beams (4) are evenly arranged on the main beam body (1) along the axial direction of the bridge, the extension direction of each distribution beam (4) is perpendicular to the axial direction of the bridge, each distribution beam (4) is arranged in parallel, each distribution beam (4) is arranged between two rows of shear nails (3), and the spacing between adjacent distribution beams (4) is no more than twice the spacing between two adjacent rows of shear nails (3); The track beam (2) is arranged across a plurality of distribution beams (4); A plurality of gantry crane full-load ranges are preset on the track beam (2), and a distribution beam (4) is provided between each two adjacent rows of shear studs (3) below each full-load range to move each wheel group of the gantry crane into each full-load range in a one-to-one correspondence manner.

2. A gantry crane track beam support device for bridge construction according to claim 1, characterized in that: When the gantry crane is fully loaded, the contact portion between the distribution beam (4) and the track beam (2) is welded, and both sides of the contact portion between the distribution beam (4) and the track beam (2) are fully welded.

3. The gantry crane track beam support device for bridge construction according to claim 1, characterized in that: Also includes a reinforcement plate (5); A plurality of small longitudinal beams are arranged below the main beam body (1), and transverse partitions are arranged between the small longitudinal beams; The reinforcing plates (5) are symmetrically arranged on both sides of the distribution beam (4) along the extension direction of the distribution beam (4); the reinforcing plates (5) are fixedly connected to the main beam body (1); and each reinforcing plate (5) is located above the transverse partition or above the small longitudinal beam.

4. The gantry crane track beam support device for bridge construction according to claim 3, characterized in that: When the gantry crane is fully loaded, the contact portion between the distribution beam (4) and the reinforcement plate (5) is welded, and the welding is performed in a double-sided fillet welding manner.

5. The gantry crane track beam support device for bridge construction according to claim 3, characterized in that: It also includes a limit card plate, which is arranged on the track beam (2) when the gantry crane is fully loaded, and is used to limit the movement of the wheel set along the track beam (2).

6. The gantry crane track beam support device for bridge construction according to claim 5, characterized in that: The limiting clamping plate is welded to the track beam (2) and is welded by double-sided fillet welding.

7. A method for supporting a gantry crane track beam for bridge construction, using the support device according to claim 5 or 6, characterized in that: The following steps are included: Step 1: evenly arranging a plurality of rows of shear nails (3) along the axial direction of the bridge on the main beam body (1), setting a distribution beam (4) between two adjacent rows of shear nails (3), equidistantly arranging the plurality of distribution beams (4) along the axial direction of the bridge, the spacing between adjacent distribution beams (4) being twice the spacing between two adjacent rows of shear nails (3), the extending direction of each distribution beam (4) being perpendicular to the axial direction of the bridge, and a track beam (2) being spanned on the plurality of distribution beams (4), so that when the gantry crane is unloaded, each wheel group of the gantry crane can move on the track beam (2); Step 2: Preset a number of gantry crane full-load ranges on the track beam (2), set a distribution beam (4) between each two adjacent rows of shear nails (3) below each full-load range, and move each wheel group of the gantry crane into each full-load range in a one-to-one correspondence; Step three, setting a limit card plate on the track beam (2), the limit card plate is used to limit the movement of each wheel group of the gantry crane out of the full load range, so that the gantry crane is fully loaded.

8. The method for supporting a gantry crane track beam for bridge construction according to claim 7, characterized in that: In step 1, after a distribution beam (4) is arranged between two adjacent rows of shear studs (3), reinforcing plates (5) can be symmetrically arranged on both sides of each distribution beam (4) along the axis of the distribution beam (4), each reinforcing plate (5) is fixedly connected to the main beam body (1), and each reinforcing plate (5) is arranged above the small longitudinal beam or transverse diaphragm of the bridge.

9. The method for supporting a gantry crane track beam for bridge construction according to claim 7, wherein: In step 2, the full load range is centered at the contact point between the wheel set and the track beam (2), and the full load range is not less than 1.2 m.

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