Steel box girder supporting steel pipe leveling integrated construction method and device

Abstract

The present application relates to steel box girder support technical field, specifically to a kind of steel box girder support steel pipe leveling integrated construction method and device, including support steel pipe, triangular reinforcing rib plate, circular ring steel plate body, column cap and beam frame, triangular reinforcing rib plate is welded in annular array on the upper outer periphery of support steel pipe, the circular ring steel plate body is welded on triangular reinforcing rib plate upper end, the circular ring steel plate body includes sequentially welded as a whole bearing ring plate, side wall cylinder plate and upper cone cylinder plate, the inside of bearing ring plate is welded with support steel pipe, the bottom of bearing ring plate is welded with triangular reinforcing rib plate, symmetrically provided with sand discharging hole on the plate face of bearing ring plate, sand discharging assembly is installed in sand discharging hole.The present application is welded on steel pipe around sand box, while column cap, around structure and steel pipe can form closed among three, can avoid impurity interference, and can realize quick removal adjustment column cap, improve the turnover rate of support system.

Description

Technical Field

[0001] This invention relates to the field of steel box girder support technology, specifically to an integrated construction method and device for leveling steel pipes supporting steel box girders. Background Technology

[0002] During bridge construction, road closures are frequently required, inevitably causing traffic congestion in urban areas. To improve construction efficiency, shorten concrete pouring time, and reduce temporary road closures, steel pipe support systems are commonly used for temporary support. These systems are widely adopted in bridge construction due to their ease of transportation, installation, and dismantling. However, because their structures are typically based on standard parameters, and actual construction environments are complex, adjustments are often necessary to meet various operational requirements. Therefore, to expedite support system adjustments, improve structural component turnover, and further enhance the adaptability of steel box girder support systems, an integrated construction method and device for leveling steel pipe supports for steel box girders is urgently needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an integrated construction method and device for leveling steel pipes supporting steel box girders, which addresses the shortcomings of the existing technology.

[0004] The technical problem to be solved by the present invention is achieved through the following technical solution: The present invention discloses an integrated leveling device for steel box girder support steel pipes, including a support steel pipe, triangular reinforcing ribs, a circular steel plate body, a column cap, and a beam frame. The upper outer periphery of the support steel pipe is welded with triangular reinforcing ribs in a circular array. The circular steel plate body is welded to the upper end of the triangular reinforcing ribs. The circular steel plate body includes a bearing ring plate, a side cylindrical plate, and an upper conical plate welded together in sequence. The inner side of the bearing ring plate is welded to the support steel pipe, and the bottom of the bearing ring plate is welded to the triangular reinforcing ribs. The bearing ring plate has symmetrical sand discharge holes on its surface. A sand discharge assembly is installed in each sand discharge hole. An annular gap is reserved between the upper end of the upper conical plate and the outer wall of the supporting steel pipe. The circular steel plate and the sand discharge assembly form a semi-enclosed space around the sand particles. The column cap includes a circular column and a load-bearing cap plate. The load-bearing cap plate is welded to the upper end of the circular column. The bottom of the circular column is inserted into the annular gap and is squeezed and stressed by the sand particles. The load-bearing cap plate is used to assemble the beam frame. The sand discharge assembly is used to adjust the support height of the beam frame by sand discharge operation on the corresponding side after installation.

[0005] Furthermore, the outer periphery of the bearing ring plate is provided with an annular angle iron for assisting in welding the side wall cylinder plate. The cross-sectional direction of the annular angle iron is right-angled. The lower outer periphery of the upper conical cylinder plate is provided with an annular bent angle iron for assisting in welding the side wall cylinder plate. The cross-sectional direction of the annular bent angle iron is obtuse-angled. The lower part of the annular bent angle iron is used to overlap the inner side of the side wall cylinder plate.

[0006] Furthermore, the sand unloading assembly includes a bucket, a valve column, and a rotating column. The bucket includes a bucket wall and a bucket body. The upper part of the bucket wall is mounted on the sand unloading hole. The bucket body is located at the lower end of the bucket wall. The lower end of the bucket body is provided with an expansion segment hole. The bucket body is provided with a support platform. The top of the valve column is provided with a pressure-blocking head for sealing the upper opening of the bucket wall. The middle part of the valve column is provided with a valve plate. A trapezoidal threaded pair is provided between the bucket wall and the valve plate. The valve plate is provided with a sand mesh hole. The bottom of the valve plate is provided with a vertical rib-type plug plate. The rotating column is welded to the bottom end of the valve column. An umbrella cover is fitted on the rotating column. The rotating column is connected to a groove column.

[0007] Furthermore, the expansion segmented hole includes a valve hole portion for accommodating the valve stem through which it passes, the valve hole portion being located at the center of the expansion segmented hole, and the expansion segmented hole includes a diverging conical nipple-shaped through groove for engaging and sealing with a plug plate.

[0008] Furthermore, a limiting cylinder is slidably fitted on the outer side of the groove column. The limiting cylinder is welded to the supporting steel pipe. The inner side of the limiting cylinder is provided with a pair of wall-adhering leaf springs. The outer side of the groove column is provided with a waist groove for engaging and limiting with the wall-adhering leaf springs. A handwheel is provided at the bottom end of the rotating column.

[0009] This invention also discloses an integrated construction method for leveling steel pipes supporting steel box girders, comprising the following steps: Step S1, welding triangular reinforcing ribs in a ring array to the outside of the supporting steel pipe; Step S2, inserting a bearing ring plate into the upper part of the supporting steel pipe and welding the bearing ring plate to the top of the triangular reinforcing ribs, and welding the inner side of the bearing ring plate to the outer wall of the supporting steel pipe; Step S3, aligning and welding the upper conical plate and the side wall plate to the outside of the bearing ring plate using annular angle irons to form a semi-closed circular steel plate body; Step S4, injecting sand from the upper end into the semi-closed circular steel plate body, inserting column caps into the circular steel plate body to form support, and fixing the beam frame on it; Step S5, leveling the higher side by operating the sand unloading assembly to gradually achieve an overall level process.

[0010] Furthermore, step S2 includes the process of inserting the sand unloading assembly into the sand unloading hole, the process of welding the valve column, and the process of welding the limiting cylinder to the outside of the supporting steel pipe.

[0011] Furthermore, step S3 includes the process of pre-welding the upper cone plate to the upper end of the side panel plate using annular angle iron in the prefabrication workshop.

[0012] Furthermore, step S5 includes determining the levelness of the beam frame using a leveling instrument, thereby identifying the positions of the corresponding sand unloading holes on both sides that require symmetrical leveling.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] (1) The present invention welds the enclosed sand box on the steel pipe, and the column cap, the enclosed structure and the steel pipe can form a closed structure, which can avoid interference from impurities and enable quick disassembly and adjustment of the column cap, thereby improving the turnover rate of the support system.

[0015] (2) Construction workers can fill the sand box by utilizing the gap between the enclosed sand box and the steel pipe. The amount of sand in the sand box can be adjusted by the sand outlet holes on both sides to ensure the flatness of the column cap. The flatness of the column cap can be further adjusted by adjusting the flatness of the beam frame.

[0016] (3) The present invention adopts a double-sealed sand unloading assembly with overlapping joints. The sand unloading speed is controlled by controlling the size of the valve hole opening, avoiding the operating resistance caused by direct sand unloading. By setting a limit safety mechanism, the sand unloading efficiency is guaranteed while the sand unloading process is safe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a top view after step S1 of the present invention has been completed;

[0019] Figure 3 This is a schematic diagram showing the distribution of the sand discharge holes 311 of the present invention on the annular steel plate 3;

[0020] Figure 4 This is a diagram showing the installation structure of the sand unloading assembly 6 on the circular steel plate 3 of the present invention;

[0021] Figure 5 This is a top view of the structure of the bucket 61 of the present invention;

[0022] Figure 6 This is a schematic diagram of the connection structure between the limiting cylinder 7 and the groove column 631 of the present invention;

[0023] 1-Supporting steel pipe, 2-Triangular reinforcing rib, 3-Circular ring steel plate, 31-Bearing ring plate, 311-Sand discharge hole, 32-Side wall cylinder plate, 33-Upper conical cylinder plate, 4-Column cap, 41-Circular ring cylinder, 42-Bearing cap plate, 5-Beam frame, 6-Sand discharge assembly, 61-Bucket, 611-Bucket wall, 612-Bucket body, 612a-Expansion segment hole, 612b-Valve hole, 613-Support platform, 62-Valve column, 621-Plug head, 622-Valve plate, 623-Plug plate, 624-Umbrella cover, 63-Rotating column, 631-Groove column, 631a-Waist groove, 64-Handwheel, 7-Limiting cylinder, 71-Wall-adhering leaf spring, 8-Sand grain. Detailed Implementation

[0024] like Figure 1-6 As shown, this invention discloses an integrated leveling device for steel box girder support steel pipes, comprising a support steel pipe 1, triangular reinforcing ribs 2, a circular steel plate body 3, a column cap 4, and a beam frame 5. The support steel pipe 1 has triangular reinforcing ribs 2 welded in a circular array on its upper outer periphery. The circular steel plate body 3 is welded to the upper end of the triangular reinforcing ribs 2. The circular steel plate body 3 includes a load-bearing ring plate 31, a side cylindrical plate 32, and an upper conical cylindrical plate 33, which are welded together in sequence. The inner side of the load-bearing ring plate 31 is welded to the support steel pipe 1, and the bottom of the load-bearing ring plate 31 is welded to the triangular reinforcing ribs 2. The outer periphery of the load-bearing ring plate 31 is provided with annular angle irons for assisting in the welding of the side cylindrical plate 32. The cross-sectional direction of the annular angle irons is at a right angle. The lower outer periphery of the upper conical cylindrical plate 33 is provided with... An annular angle iron is used to assist in welding the side wall plate 32. The cross-section of the annular angle iron is obtuse. The lower part of the annular angle iron is used to overlap the inner side of the side wall plate 32. An annular gap is reserved between the upper end of the upper conical plate 33 and the outer wall of the supporting steel pipe 1. The annular gap can accommodate the passage of the circular column 41, and the width of the annular gap is greater than the thickness of the circular column 41 to ensure that the circular column 41 can pass smoothly. The circular steel plate 3 and the sand unloading assembly 6 form a semi-enclosed space around which sand particles 8 are loaded. The column cap 4 includes a circular column 41 and a load-bearing cap plate 42. The load-bearing cap plate 42 is welded to the upper end of the circular column 41. The bottom of the circular column 41 is inserted into the annular gap and is squeezed and stressed by the sand particles 8. The load-bearing cap plate 42 is used to assemble the beam frame 5.

[0025] The sand unloading assembly 6 is used to level the support height of the beam frame 5 by unloading sand on the corresponding side after installation. The bearing ring plate 31 has symmetrically arranged sand unloading holes 311 on its surface. The sand unloading assembly 6 is installed in each sand unloading hole 311. The sand unloading assembly 6 includes a bucket 61, a valve column 62, and a rotating column 63. The bucket 61 includes a bucket wall 611 and a bucket body 612. The upper part of the bucket wall 611 is mounted on the sand unloading hole 311, and the bucket body 612 is located at the lower end of the bucket wall 611. The lower end of the bucket body 612 has an expansion segment hole 612a. Specifically, the expansion segment hole 612a includes a valve hole portion 612b for accommodating the valve column 62. The valve hole portion 612b is located at the center of the expansion segment hole 612a. The expansion segment hole 612a includes a diverging conical noodle-shaped through groove, which is used to engage and close with a plug plate 623.

[0026] Furthermore, the valve column 62 is provided with a plugging head 621 at its top for sealing the upper opening of the bucket wall 611. The plugging head 621 has a rhomboid cross-section, which is beneficial for pushing sand particles 8 upward and cutting them off downward. The valve column 62 is provided with a valve plate 622 in the middle, and the bucket body 612 is provided with a support platform 613 for contacting and supporting the valve plate 622. A trapezoidal threaded pair is provided between the bucket wall 611 and the valve plate 622. The valve plate 622 is provided with sand mesh holes, and the bottom of the valve plate 622 is provided with a vertical rib-type plug plate 623. The rotating column 63 is welded to the bottom end of the valve column 62, and a... The umbrella cover 624 has a rotating column 63 connected to a groove column 631. A limiting cylinder 7 is slidably fitted on the outside of the groove column 631. The limiting cylinder 7 is welded to the supporting steel pipe 1. The inner side of the limiting cylinder 7 is provided with a pair of wall-adhering springs 71. The wall-adhering springs 71 can maintain a certain gap with the groove column 631. On the one hand, it is convenient to adapt to the coaxiality welding error between the valve column 62 and the rotating column 63. On the other hand, it reduces the relative movement resistance between the limiting cylinder 7 and the groove column 631. The outside of the groove column 631 is provided with a waist groove 631a for engaging and limiting the wall-adhering spring 71. A handwheel 64 is provided at the bottom of the rotating column 63. When operating at the designated sand discharge hole 311, the handwheel 64 can be rotated. Under the driving action of the trapezoidal thread connection, the valve plate 622 rises relative to the bucket wall 611, the pressure head 621 is lifted, and the sand particles enter the bucket 61 and pass through the sand mesh hole of the valve plate 622 into the conical nipple-shaped channel that has been separated from the plug plate 623, thus achieving outflow. During the above process, the trough column 631 rises, the lower wall-adhering spring 71 is pressed down, and the upper wall-adhering spring 71 is always raised. If it rises to the highest position, the upper wall-adhering spring 71 will lock the lower part of the waist groove 631a to prevent sand discharge from being too fast. Similarly, when the trough column 631 descends, that is, when the valve is closed, the upper wall-adhering spring 71 is pressed down, and the lower wall-adhering spring 71 is always raised. If it descends to the lowest position, the lower wall-adhering spring 71 will be locked to prevent overload.

[0027] This invention also discloses an integrated construction method for leveling steel pipes supporting steel box girders, comprising the following steps:

[0028] Step S1: Weld the triangular reinforcing ribs 2 in a ring array to the outside of the supporting steel pipe 1 to determine the installation positioning position, which needs to be determined based on the height of the annular cylindrical tube 41.

[0029] Step S2: The bearing ring plate 31 is inserted into the upper part of the support steel pipe 1 and welded and fixed above the triangular reinforcing rib plate 2. The inner side of the bearing ring plate 31 is welded to the outer wall of the support steel pipe 1. Then, this step also includes the process of inserting the sand discharge assembly 6 into the sand discharge hole 311 in sequence, the process of welding the valve column 62 and the rotating column 63 together, and the process of welding the limiting cylinder 7 to the outer side of the support steel pipe 1. At the same time, when welding the valve column 62 and the rotating column 63, the umbrella cover 624 can be inserted first.

[0030] Step S3: In the prefabrication workshop, the upper conical plate 33 is pre-welded to the upper end of the side wall plate 32 using annular angle iron, so that the upper conical plate 33 and the side wall plate 32 become a whole, reducing the amount of on-site welding work and improving the welding accuracy. Then, the upper conical plate 33 and the side wall plate 32 are aligned and welded to the outside of the bearing ring plate 31 using annular angle iron to form a semi-closed circular steel plate body 3.

[0031] Step S4: Inject sand 8 into the semi-enclosed circular steel plate 3 through the annular seam at the top, insert column cap 4 into the circular steel plate 3 to form a support, and fix the beam frame 5 on the column cap 4.

[0032] Step S5: First, the horizontality of the beam frame 5 is determined by a leveling instrument, thereby determining the positions of the corresponding sand unloading holes 311 on both sides that need to be symmetrically leveled. By operating the sand unloading assembly 6 at the corresponding sand unloading hole 311 position, sand is unloaded and leveled on the higher side, gradually achieving the overall leveling process.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A leveling integrated device for steel box girder support steel pipes, comprising support steel pipes, triangular reinforcing ribs, circular steel plates, column caps, and beam frames, characterized in that: The supporting steel pipe has triangular reinforcing ribs welded in a ring array on its upper outer periphery. A circular steel plate is welded to the upper end of the triangular reinforcing ribs. The circular steel plate includes a bearing ring plate, a side cylindrical plate, and an upper conical plate welded together in sequence. The inner side of the bearing ring plate is welded to the supporting steel pipe, and the bottom of the bearing ring plate is welded to the triangular reinforcing ribs. Symmetrical sand-discharging holes are provided on the surface of the bearing ring plate, and sand-discharging components are installed in the sand-discharging holes. A circumferential gap is reserved between the upper end of the upper conical plate and the outer wall of the supporting steel pipe. The circular steel plate and the sand-discharging components form a semi-enclosed space containing sand. The sand-discharging components include a bucket, a valve column, and a rotating column. The bucket includes a bucket wall and a bucket body. The upper part of the bucket wall is mounted on the sand-discharging holes, and the bucket body is located at the lower end of the bucket wall. The lower end of the bucket body has an expansion segment hole and a support platform. The top of the valve column has a... The sealing head at the top of the sealing bucket wall has a valve plate in the middle of the valve column, a trapezoidal threaded pair between the bucket wall and the valve plate, a sand mesh hole in the valve plate, a vertical rib-type plug plate at the bottom of the valve plate, a swivel column welded to the bottom of the valve column, an expansion segment hole including a valve hole for accommodating the valve column, the valve hole being located at the center of the expansion segment hole, an expansion segment hole including a diverging conical nipple-shaped through groove for engaging and sealing with the plug plate, an umbrella cover fitted on the swivel column, a groove column connected to the swivel column, a column cap including a circular annular cylinder and a load-bearing cap plate, the load-bearing cap plate welded to the upper end of the circular annular cylinder, the bottom of the circular annular cylinder inserted into the annular gap and subjected to pressure by the sand particles, the load-bearing cap plate for mounting the beam frame, and a sand unloading assembly for adjusting the support height of the beam frame by unloading sand on the corresponding side after installation.

2. The integrated leveling device for steel box girder support steel pipes according to claim 1, characterized in that: The outer periphery of the bearing ring plate is provided with an annular angle iron for assisting in welding the side wall cylinder plate. The cross-sectional direction of the annular angle iron is right-angled. The outer periphery of the lower end of the upper conical cylinder plate is provided with an annular bent angle iron for assisting in welding the side wall cylinder plate. The cross-sectional direction of the annular bent angle iron is obtuse-angled. The lower part of the annular bent angle iron is used to overlap the inner side of the side wall cylinder plate.

3. The integrated leveling device for steel box girder support steel pipes according to claim 2, characterized in that: The outer side of the groove column is fitted with a limiting cylinder, which is welded to the supporting steel pipe. The inner side of the limiting cylinder is provided with a pair of wall-adhering leaf springs. The outer side of the groove column is provided with a waist groove for engaging and limiting with the wall-adhering leaf springs. The bottom end of the rotating column is provided with a handwheel.

4. A method for construction using the integrated leveling device for steel box girder support pipes as described in claim 3, characterized in that: Includes the following steps, Step S1: Weld the triangular reinforcing ribs in a ring array to the outside of the supporting steel pipe; Step S2 involves inserting the bearing ring plate onto the upper part of the support steel pipe and welding the bearing ring plate to the upper part of the triangular reinforcing rib plate. The inner side of the bearing ring plate is then welded to the outer wall of the support steel pipe. Step S2 includes the process of inserting the sand unloading assembly into the sand unloading hole, the process of welding the valve column, and the process of welding the limiting cylinder to the outer side of the support steel pipe. Step S3 involves welding the upper conical plate and the side wall plate to the outside of the bearing ring plate using annular angle iron to form a semi-closed circular steel plate. Step S3 includes the process of pre-welding the upper conical plate to the upper end of the side wall plate using annular angle iron in the prefabrication workshop. Step S4: Inject sand from the top into the semi-enclosed circular steel plate, insert the column cap into the circular steel plate to form a support, and fix the beam frame on the column cap; Step S5 involves operating the sand unloading assembly to unload and level the higher side, gradually achieving an overall level. Step S5 includes using a leveling instrument to determine the levelness of the beam frame, thereby identifying the positions of the corresponding sand unloading holes on both sides that require symmetrical leveling.

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