A ballast test method for assembled steel bridge erection device

Abstract

The embodiment of the present application provides a method for ballasting a prefabricated steel bridge erection device. The method comprises: placing at least two erection device assemblies side by side, ensuring that the roller groups of each erection device are on the same horizontal plane; erecting a prefabricated steel bridge, hoisting the steel bridge onto the test object erection device roller group, and then performing counterweighting on the bridge deck of the steel bridge; when the ballasting test officially begins, raising the test object erection device, adjusting the center of gravity position of the steel bridge so that both ends of the steel bridge are suspended in the air and the bridge deck is horizontal, and the weight of the steel bridge and the counterweight all fall on the test object erection device roller group, marking the center of gravity position line at the center of the test object erection device roller group corresponding to the bridge deck position, and then ballasting; after the ballasting of the current test object is completed, adjusting the test object hydraulic support legs until the test object roller group is on the same horizontal plane as the other erection device roller groups, pulling the steel bridge so that its center of gravity position line is at the center of the next test object erection device roller group, and ballasting the next test object.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated steel bridge erection devices, and in particular to a ballasting test method for prefabricated steel bridge erection devices. Background Art

[0002] In the past, a prefabricated steel bridge was erected on a mounting device. The bridge deck was then counterweighted to its rated load for ballasting. The center of gravity was adjusted so that both ends of the bridge were suspended in the air. The entire weight was then placed on the mounting device for ballasting. Once completed, the device was withdrawn for the next set of ballasting tests. For example, a 100-ton load test of the prefabricated steel bridge erection device required erecting a 15-meter steel bridge and counterweighting it to 100 tons. The erection, ballasting, and dismantling of the 15-meter steel bridge took nearly four hours, a tedious, time-consuming, and labor-intensive process. Summary of the Invention

[0003] The present application provides a method for ballasting a prefabricated steel bridge erection device, comprising:

[0004] Place at least two sets of erection devices side by side, ensuring that the rollers of each set of erection devices are on the same horizontal plane;

[0005] Erecting a prefabricated steel bridge, hoisting the assembled steel bridge onto the roller assembly of the test object erection device, and then performing loading on the steel bridge deck;

[0006] When the ballasting test officially begins, the test object erection device is raised, and the center of gravity of the steel bridge is adjusted so that both ends of the steel bridge are suspended in the air and the bridge deck is horizontal. The weight of the steel bridge and the load all fall on the roller group of the test object erection device. The center of gravity position line is marked at the center of the roller group of the test object erection device corresponding to the bridge deck position, and then ballasting is carried out;

[0007] After the ballasting of the current test object erection device is completed, the hydraulic support legs of the test object erection device are adjusted until the roller group of the test object erection device is on the same horizontal plane as the roller group of other erection devices, and the steel bridge is pulled so that its center of gravity position line is to the center of the roller group of the next test object erection device, thereby achieving ballasting of the next test object erection device.

[0008] In some embodiments, ballast iron is used to balance the load on the steel bridge deck.

[0009] In some embodiments, the weight of the load comprises 100T.

[0010] In some embodiments, the steel bridge comprises a 15-meter prefabricated steel bridge.

[0011] The above embodiment of the present application provides a ballast test method for an assembled steel bridge erection device. By combining at least two sets of erection devices and placing them side by side, after completing the ballast test on one set of erection devices, the steel bridge is pulled to perform a ballast test on the next set of erection devices, thereby avoiding repeated erection, withdrawal and loading of the bridge, saving the time for erecting and withdrawing the loaded bridge, and thus saving the overall ballast test time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings illustrate generally, by way of example and not limitation, various embodiments discussed herein.

[0013] Figure 1 The figure is a test operation diagram of a ballasting test method for a prefabricated steel bridge erection device;

[0014] Figure 2 This is another test operation schematic diagram of a ballasting test method for a prefabricated steel bridge erection device. DETAILED DESCRIPTION

[0015] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below with reference to the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0016] The present application provides a method for ballasting a prefabricated steel bridge erection device, comprising:

[0017] Place at least two sets of erection devices side by side to ensure that the roller groups of each set of erection devices are on the same horizontal plane.

[0018] Erect the prefabricated steel bridge, hoist the assembled steel bridge onto the roller assembly of the test object erection device, and then load it on the bridge deck.

[0019] When the ballast test officially begins, if Figure 1 As shown, the test object erection device is raised, and the center of gravity of the steel bridge is adjusted so that both ends of the steel bridge are suspended in the air and the bridge deck is horizontal. The weight of the steel bridge and the load all fall on the roller group of the test object erection device. The center of gravity position line is marked at the center of the roller group of the test object erection device corresponding to the bridge deck position, and then ballasting is performed.

[0020] After the current test object erection device is ballasted, adjust the test object erection device hydraulic legs until the test object erection device roller group is on the same level as the other erection device roller groups, and pull the steel bridge so that its center of gravity position line is at the center of the next test object erection device roller group, such as Figure 2 As shown, the ballasting of the next test object erection device is achieved.

[0021] In some embodiments, ballast iron is used to balance the load on the steel bridge deck.

[0022] In some embodiments, the weight of the load comprises 100T.

[0023] In some embodiments, the steel bridge comprises a 15-meter prefabricated steel bridge.

[0024] The above embodiment of the present application provides a ballast test method for an assembled steel bridge erection device. By combining at least two sets of erection devices and placing them side by side, after completing the ballast test on one set of erection devices, the steel bridge is pulled to perform a ballast test on the next set of erection devices, thereby avoiding repeated erection, withdrawal and loading of the bridge, saving the time for erecting and withdrawing the loaded bridge, and thus saving the overall ballast test time.

[0025] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned disclosed concepts. For example, the above-mentioned features may be interchangeably formed with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A ballast test method for an assembled steel bridge erection device, characterized in that: The method comprises: Place at least two sets of erection devices side by side, ensuring that the rollers of each set of erection devices are on the same horizontal plane; Erecting a prefabricated steel bridge, hoisting the assembled steel bridge onto the roller assembly of the test object erection device, and then performing loading on the steel bridge deck; When the ballasting test officially begins, the test object erection device is raised, and the center of gravity of the steel bridge is adjusted so that both ends of the steel bridge are suspended in the air and the bridge deck is horizontal. The weight of the steel bridge and the load all fall on the roller group of the test object erection device. The center of gravity position line is marked at the center of the roller group of the test object erection device corresponding to the bridge deck position, and then ballasting is carried out; After the ballasting of the current test object erection device is completed, the hydraulic support legs of the test object erection device are adjusted until the roller group of the test object erection device is on the same horizontal plane as the roller group of other erection devices, and the steel bridge is pulled so that its center of gravity position line is to the center of the roller group of the next test object erection device, thereby achieving ballasting of the next test object erection device.

2. The ballast test method for an assembled steel bridge erection device according to claim 1, characterized in that: Ballast iron is used to balance the load on the steel bridge deck.

3. The ballast test method for an assembled steel bridge erection device according to claim 1, characterized in that: The weight of the ballast includes 100T.

4. The ballast test method for an assembled steel bridge erection device according to claim 1, characterized in that: The steel bridge comprises a 15-meter prefabricated steel bridge.

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