CN111719437B - A construction system and method for longitudinal and transverse movement of super-heavy and super-wide steel box beams - Google Patents

Abstract

The present invention provides a construction system and method for longitudinal and transverse movement of an overweight and overwidth steel box girder, comprising a support system, a track beam system and a traction system, wherein the track beam system is arranged on the support system, and the traction system is used to pull the steel box girder to slide along the track beam system; the support system comprises a steel box girder longitudinal movement support, a steel box girder transverse movement support and a side span and secondary side span steel box girder support, the steel box girder transverse movement support is perpendicular to the steel box girder longitudinal movement support and the side span and secondary side span steel box girder support, and the two ends of the steel box girder transverse movement support are respectively connected with the steel box girder longitudinal movement support and the side span and secondary side span steel box girder support to form a common area, and the track beam system comprises a track beam 1, a track beam 2 and a track beam 3, the track beam 1 is arranged on the steel box girder longitudinal movement support, the track beam 2 is arranged on the steel box girder transverse movement support, and the track beam 3 is arranged on the side span and secondary side span steel box girder support. The construction time and cost are reduced, and the construction problem of limiting the installation of steel box girders due to construction period, terrain, steel box girder width and weight, and large span and long distance is solved.

Description

A construction system and method for longitudinal and transverse movement of super-heavy and super-wide steel box beams

Technical Field

The invention belongs to the technical field of bridge construction, and in particular relates to a longitudinal and transverse movement construction system and method for an overweight and overwidth steel box girder.

Background technique

During the bridge construction process, the installation of steel box girders is a very important sub-project, which is generally carried out by on-site truss installation/floating crane hoisting/top-pushing. When faced with the vertical and horizontal movement of an overweight and overwide steel box girder in shallow water or on land, these methods limit the construction period/terrain/width and weight of the steel box girder, large span and long distance and other factors.

In order to ensure the high-quality, high-efficiency and high-standard installation and construction of this kind of super-heavy and super-wide steel box girder (width over 54.4m, heaviest section 496.7t), a reasonable and effective longitudinal and transverse construction method of this kind of super-heavy and super-wide steel box girder is particularly important. If the design is unreasonable, it will cause a series of problems such as delay in construction period, construction quality and safety cannot be guaranteed.

Summary of the invention

The purpose of the present invention is to provide a construction system for longitudinal and transverse movement of an overweight and overwidth steel box girder, so as to overcome the technical problems existing in the prior art.

Another object of the present invention is to provide a method for longitudinal and transverse movement construction of an overweight and overwide steel box girder, which can fix the steel box girder in place through effective longitudinal and transverse sliding, thereby reducing construction time and cost.

To this end, the technical solution provided by the present invention is as follows:

A construction system for longitudinal and transverse movement of an extra-heavy and extra-wide steel box girder, comprising a support system, a track beam system and a traction system, wherein the track beam system is arranged on the support system, and the traction system is used to pull the steel box girder to slide along the track beam system;

The support system includes a steel box girder longitudinal displacement support, a steel box girder transverse displacement support and a side span and secondary side span steel box girder support. The steel box girder transverse displacement support is perpendicular to the steel box girder longitudinal displacement support and the side span and secondary side span steel box girder support. The two ends of the steel box girder transverse displacement support are respectively connected with the steel box girder longitudinal displacement support and the side span and secondary side span steel box girder support to form a shared area. The track beam system includes track beam one, track beam two and track beam three. The track beam one is arranged on the steel box girder longitudinal displacement support, the track beam two is arranged on the steel box girder transverse displacement support, and the track beam three is arranged on the side span and secondary side span steel box girder support.

The steel box girder longitudinal displacement support comprises a column, a flat link, a diagonal brace, a load-bearing beam, a Bailey frame and a distribution beam. The column is provided in multiple layers in the horizontal and vertical directions. The flat link is welded on the column and provided in multiple layers in the horizontal and vertical directions. The diagonal brace is provided between each layer of the flat links.

The top of the column 1 is provided with a load-bearing beam 1, a Bailey frame and a distribution beam 1 from bottom to top. The load-bearing beam 1 and the distribution beam 1 are arranged in the transverse direction, and the track beam is fixed on the distribution beam 1.

The steel box beam transverse displacement support comprises two columns, two parallel links, two diagonal braces, two load-bearing beams and a Bailey frame. The two columns are arranged in two rows in the transverse direction, and a plurality of columns are arranged in each row. The two rows of columns one at the end of the steel box beam longitudinal displacement support and the columns two at the head end of each row form a common area one. The parallel links two are welded between adjacent columns two and between adjacent columns one and two and are arranged in multiple layers in the transverse and longitudinal directions. The diagonal braces two are arranged between the top two layers of parallel links two and the bottom two layers of parallel links two.

The second load-bearing beam is arranged on the second column, the Bailey frame is arranged on the second load-bearing beam, the second track beam is fixed on the Bailey frame, and the second load-bearing beam and the Bailey frame are arranged in the transverse direction.

The side span and secondary side span steel box girder support comprises three columns, three parallel links, three diagonal braces, three load-bearing beams, Bailey frames and two distribution beams. The three columns are arranged in multiple rows along the longitudinal direction, wherein two rows of three columns are shared with the steel box girder transverse support, and the two rows of three columns and the two columns located on the same straight line form a shared area two. The three parallel links are welded between the three columns arranged longitudinally and are arranged in multiple layers. The three diagonal braces are horizontally welded between two adjacent layers of three parallel links and longitudinally welded between the upper two layers of three parallel links.

The top of the three columns are, from bottom to top, the third load-bearing beam, the Bailey frame and the second distribution beam. The third track beam is fixed on the second distribution beam. The third load-bearing beam and the second distribution beam are arranged in the transverse direction.

The track beam one and the track beam three are both composed of three I-beams, and the track beam two is composed of two I-beams. The track beam one, the track beam two and the track beam three are all paved with steel plates, and the steel plates are coated with lubricating oil.

The number of the track beam one and the track beam three is the same.

A construction method for longitudinal and transverse movement of an overweight and overwidth steel box girder comprises the following steps: placing the steel box girder on a sliding block, firstly dragging the sliding block by a hollow lifting jack to drive the steel box girder to slide along the track beam one of the steel box girder longitudinal movement bracket to the transition point between the track beam one and the track beam two, then dragging the sliding block by a hollow lifting jack to drive the steel box girder to slide along the track beam two of the steel box girder transverse movement bracket to the transition point between the track beam two and the track beam three, and finally dragging the sliding block by a continuous jack to drive the steel box girder to slide along the side span and the secondary side span steel box girder bracket to the designed position.

The slider comprises a connection frame, a top plate and a bottom plate, wherein the top plate and the bottom plate are respectively arranged at the upper and lower ends of the connection frame, a steel box beam pad is fixedly arranged on the top plate, and a slider pad is fixedly arranged under the bottom plate, and the area of the top plate is smaller than that of the bottom plate;

The connecting frame includes a vertically arranged front connecting plate, a rear connecting plate, a left connecting plate and a right connecting plate, the two ends of the front connecting plate and the rear connecting plate are connected by a left connecting plate and a right connecting plate, and the front connecting plate, the rear connecting plate, the left connecting plate and the right connecting plate are all provided with connecting holes in the center, and small holes are provided on both sides of each connecting hole.

A method for longitudinal and transverse movement of an overweight and overwide steel box girder comprises the following steps:

Step 1) Place the slider on the track beam 1 of the steel box girder longitudinal displacement bracket, then place the steel box girder on the slider by hoisting, and then install the fine-rolled threaded steel in the connection hole of the front connecting plate or the rear connecting plate of the slider, and connect the other end of the fine-rolled threaded steel to the hollow jack, and then use the hollow jack to drag the slider to drive the steel box girder to slide along the track beam 1 of the steel box girder longitudinal displacement bracket to the transition point between track beam 1 and track beam 2;

Step 2) remove the fine-rolled threaded steel bar and install it in the connection hole of the left connection plate or the right connection plate, and use the hollow jack to drag the slider to drive the steel box girder to slide along the track beam 2 of the steel box girder transverse bracket to the transition point between the track beam 2 and the track beam 3;

Step 3) disassemble the fine-rolled threaded steel bar, install one end of the steel strand in the connection hole of the front connecting plate or the rear connecting plate of the slider, and connect the other end to the continuous jack. Use the continuous jack to drag the slider to drive the steel box girder to slide along the side span and the secondary side span steel box girder support to the designed position;

Step 4) Use double-acting jacks to accurately locate the steel box girder, and at the same time replace the sliders and use pads to support the steel box girder.

The reaction seat of the hollow jack is bolted to the ends of the first track beam and the second track beam, and the continuous jack is bolted to the third track beam.

The beneficial effects of the present invention are:

The overweight and overwidth steel box girder longitudinal and transverse movement construction system provided by the present invention can effectively slide the steel box girder longitudinally and transversely along each support to the designed position by dragging the slider with a jack, by setting the steel box girder longitudinal movement support, the steel box girder transverse movement support and the side span and secondary side span steel box girder support, thereby reducing the construction time and cost, and solving the construction problem of the steel box girder installation being restricted by the construction period, terrain, steel box girder width and weight, and long span and long distance. It not only meets the construction load of the overweight and overwidth steel box girder, but also meets the safety and reliability during the beam movement, and ensures the high-quality, high-efficiency and high-standard installation and construction of the overweight and overwidth steel box girder.

The slider used in the present invention is provided with connecting holes in the four directions of the connecting frame, and the connecting holes in the corresponding directions can be connected according to the lateral or longitudinal movement direction to realize lateral and longitudinal movement. There is no need to lift the steel box girder to replace the slider 20 directions, which greatly reduces the time for reinstalling the slider due to track replacement, and makes high-altitude operations safer.

In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a general plan view of the longitudinal and transverse movement of the steel box girder;

Figure 2 is a vertical layout diagram of the steel box girder longitudinal displacement support;

Figure 3 is a cross-sectional layout diagram of the longitudinal displacement support of the steel box girder;

Figure 4 is a plan view of the longitudinal support for the steel box girder;

5 is a cross-sectional layout diagram of the common portion of the steel box girder longitudinal displacement bracket and the steel box girder transverse displacement bracket;

Figure 6 is a cross-sectional layout diagram of the steel box girder transverse support;

Figure 7 is a elevational layout of the steel box girder transverse support;

Figure 8 is a plan view of the steel box girder transverse support;

Figure 9 is a side span and secondary side span steel box girder support elevation layout;

Figure 10 is a cross-sectional arrangement diagram of the side span and secondary side span steel box girder supports;

Figure 11 is a plan view of the side span and secondary side span steel box girder support;

Figure 12 is a sample drawing of track beam 1 and track beam 3;

Figure 13 is a second large sample drawing of the track beam;

Figure 14 is a traction elevation of the hollow jack of the steel box girder;

Figure 15 is a vertical view of the continuous jack traction of the steel box girder;

FIG16 is a front view of an embodiment of a slider;

FIG. 17 is a horizontal cross-sectional view of the slider.

In the figure:

Description of reference numerals:

1. Column 1; 2. Flat joint 1; 3. Diagonal brace 1; 4. Load-bearing beam 1; 5. Bailey frame; 6. Distribution beam 1; 7. Track beam 1; 8. Track beam 2; 9. Load-bearing beam 2; 10. Diagonal brace 2; 11. Flat joint 2; 12. Column 2; 13. Column 3; 14. Diagonal brace 3; 15. Flat joint 3; 16. Distribution beam 2; 17. Track beam 3; 18. Load-bearing beam 3; 19. Limit baffle; 20. Slider; 21. Hollow jack; 22. Connector Continued jack; 23. reaction seat; 24. precision-rolled threaded steel; 25. steel strand; 26. front connecting plate; 27. rear connecting plate; 28. left connecting plate; 29. right connecting plate; 30. top plate; 31. bottom plate; 32. steel box girder pad; 33. slider pad; 34. connecting hole; 35. small hole; 36. countersunk bolt; 37. steel box girder; 38. steel box girder longitudinal displacement bracket; 39. steel box girder transverse displacement bracket; 40. side span and secondary span steel box girder bracket.

Detailed ways

The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

The exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units/elements are marked with the same reference numerals.

Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

Embodiment 1:

This embodiment provides a construction system for longitudinal and transverse movement of an overweight and overwidth steel box beam, including a support system, a track beam system and a traction system, wherein the track beam system is arranged on the support system, and the traction system is used to pull the steel box beam 37 to slide along the track beam system;

The support system includes a steel box girder longitudinal displacement support 38, a steel box girder transverse displacement support 39 and a side span steel box girder support 40. The steel box girder transverse displacement support 39 is perpendicular to the steel box girder longitudinal displacement support 38 and the side span steel box girder support 40. The two ends of the steel box girder transverse displacement support 39 are respectively connected with the steel box girder longitudinal displacement support 38 and the side span steel box girder support 40 to form a common area. The track beam system includes track beam 1 7, track beam 2 8 and track beam 3 17. The track beam 1 7 is arranged on the steel box girder longitudinal displacement support 38, the track beam 2 8 is arranged on the steel box girder transverse displacement support 39, and the track beam 3 17 is arranged on the side span steel box girder support 40. As shown in Figure 1.

The steel box girder longitudinal displacement bracket 38, the steel box girder transverse displacement bracket 39 and the side span and secondary side span steel box girder bracket 40 are used to provide longitudinal and transverse displacement platforms and beam storage platforms so that the side span and secondary side span steel box girder 37 can reach the designed position.

The overweight and overwidth steel box girder longitudinal and transverse movement construction system provided by the present invention, by setting a steel box girder longitudinal movement bracket 38, a steel box girder transverse movement bracket 39 and a side span and secondary side span steel box girder bracket 40, can drive the steel box girder 37 to slide longitudinally and transversely effectively along each bracket to the designed position by the jack-dragging slider 20, thereby reducing construction time and cost, and solving the construction problem of the installation of the steel box girder 37 due to construction period, terrain, width and weight of the steel box girder 37, and large span and long distance restrictions.

Embodiment 2:

On the basis of Example 1, this embodiment provides a construction system for longitudinal and transverse movement of an overweight and overwidth steel box girder, wherein the steel box girder longitudinal movement support 38 comprises a column 1, a flat joint 2, a diagonal brace 3, a load-bearing beam 4, a Bailey frame 5 and a distribution beam 6, wherein a plurality of columns 1 are arranged in both the transverse and longitudinal directions, the flat joint 2 is welded on the column 1 and arranged in multiple layers in the transverse and longitudinal directions, and the diagonal brace 3 is arranged between each layer of the flat joint 2;

The top of the column 1 is provided with a load-bearing beam 4, a Bailey frame 5 and a distribution beam 6 from bottom to top. The load-bearing beam 4 and the distribution beam 6 are arranged in the transverse direction, and the track beam is fixed on the distribution beam 6.

In this embodiment, the average height of the column 1 above the ground is 30m, and the depth of the column 1 is 20m. As shown in FIG2, the column 1 is arranged in 9 rows in the longitudinal direction of the bridge, with an equal spacing of 9m, and 2 rows of the column 1 also serve as the steel box beam transverse displacement bracket 39; as shown in FIG3, the column 1 is arranged in 4 rows in the transverse direction of the bridge, with spacings of 6.4m, 21m, and 6.4m respectively, and the horizontal and vertical joints 2 are welded on the column 1 in 4 layers with a vertical interval of 10m, and the diagonal braces 3 are welded between each layer of horizontal joints 2 in the horizontal and vertical directions.

The top of column 1 is open, and upwards, load-bearing beam 4, Bailey beam, distribution beam 6, and track beam 7 are arranged in sequence, among which load-bearing beam 4 and distribution beam 6 are arranged along the transverse direction of the bridge. Track beam 7 is composed of three HN400×200 sections, that is, the upper and lower flanges of three sections of steel are welded side by side, as shown in Figure 12.

Embodiment 3:

On the basis of Example 1, this embodiment provides a construction system for longitudinal and transverse movement of an overweight and overwidth steel box girder, wherein the steel box girder transverse movement bracket 39 comprises a column 2 12, a flat joint 2 11, a diagonal brace 2 10, a load-bearing beam 2 9 and a Bailey frame 5, wherein the column 2 12 is arranged in two rows in the transverse direction, and a plurality of columns are arranged in each row, and the two rows of columns 1 1 at the end of the steel box girder longitudinal movement bracket 38 and the column 2 12 at the head end of each row form a common area 1, the flat joint 2 11 is welded between adjacent columns 2 12, between adjacent columns 1 1 and column 2 12, and multiple layers are arranged in the transverse and longitudinal directions, and the diagonal brace 2 10 is arranged between the top two layers of flat joints 2 11 and the bottom two layers of flat joints 2 11;

The second load-bearing beam 9 is arranged on the second column 12, the Bailey frame 5 is arranged on the second load-bearing beam 9, the second track beam 8 is fixed on the Bailey frame 5, and the second load-bearing beam 9 and the Bailey frame 5 are arranged in the transverse direction.

In this embodiment, as shown in FIG5 , 7 columns are arranged in the transverse direction of the bridge in the area shared by the longitudinal displacement bracket 38 and the transverse displacement bracket of the steel box girder, of which four are columns 1 and the middle three are columns 2 12, arranged at equal intervals of 5.3 m. The length of the single flat joint 2 11 is 4.5 m, and 4 layers are welded on the columns 1 1 and 2 12 with a vertical interval of 10 m. The length of the single diagonal brace 2 10 is 9.5 m, and is welded horizontally between the upper and lower two layers of flat joints 2 11 (as shown in FIG6 ), and is welded vertically between the four layers of flat joints (as shown in FIG7 ).

The average height of the column 12 above the ground is 30m, and the depth of the column 12 is 20m. There are 2 rows in the longitudinal direction of the bridge, with a spacing of 8.5m, and 18 rows in the transverse direction of the bridge, with an equal spacing of 5.3m. There are 7 rows of columns 12 in the shared area of the steel box girder transverse support 39 and the side span and secondary side span steel box girder support 40, and there are 4 separate columns 12. The tops of the columns 1 and 2 are open, and the load-bearing beams 29 and Bailey are arranged upwards in sequence. They are arranged in the transverse direction of the bridge. The track beam 28 uses 2 HN650×300, that is, it is composed of the upper and lower flanges of 2 steel sections welded side by side, as shown in Figure 13.

Embodiment 4:

On the basis of Example 1, this embodiment provides a construction system for longitudinal and transverse movement of an overweight and overwidth steel box girder, wherein the side span and secondary side span steel box girder support 40 comprises a column three 13, a flat link three 15, a diagonal brace three 14, a load-bearing beam three 18, a Bailey frame 5 and a distribution beam two 16, wherein the column three 13 is arranged in multiple rows along the longitudinal direction, wherein two rows of column three 13 are shared with the steel box girder transverse movement support 39, and the two rows of column three 13 and the column two 12 located on the same straight line form a shared area two, the flat link three 15 is welded between the longitudinally arranged columns three 13 and is arranged in multiple layers, and the diagonal brace three 14 is horizontally welded between two adjacent layers of flat links three 15, and longitudinally welded between the upper two layers of flat links three 15;

The top of the three columns 13 are, from bottom to top, the three load-bearing beams 18, the Bailey frame 5 and the second distribution beam 16. The three track beams 17 are fixed on the second distribution beam 16. The three load-bearing beams 18 and the second distribution beams 16 are arranged in the transverse direction.

In this embodiment, the average height of the column three 13 above the ground is 30m, and the depth of the column three 13 in the ground is 24m. As shown in FIG9, the column three 13 is arranged in 25 rows in the longitudinal bridge direction, with a spacing of 9m/12m, and 2 rows are also used as transverse supports. As shown in FIG10, the column three 13 in the side span and secondary side span steel box girder support 40 is arranged in 4 rows in the transverse bridge direction, with spacings of 6.4m, 21m, and 6.4m respectively. The flat joint three 15 is welded on the column three 13 with 4 layers of 10m intervals in the transverse bridge direction, and 3 layers are welded on the column three 13 with 10m intervals in the longitudinal bridge direction. The diagonal brace three 14 is welded between each layer of the flat joint three 15 in the transverse bridge direction, and welded between the top 2 layers of the flat joint three 15 in the longitudinal bridge direction.

The top of the column 3 13 is open, and the load-bearing beam 3 18, Bailey, distribution beam 2 16, and track beam 3 17 are arranged in sequence upward, wherein the load-bearing beam 3 18 and distribution beam 2 16 are arranged along the transverse direction of the bridge. Track beam 3 17 uses 3 HN400×200, as shown in FIG12 .

Embodiment 5:

Based on Example 1, this example provides an overweight and overwidth steel box girder longitudinal and transverse movement construction system, wherein the track beam 1 7 and the track beam 3 17 are both composed of 3 I-beams, and the track beam 2 8 is composed of 2 I-beams. The track beam 1 7, the track beam 2 8 and the track beam 3 17 are all paved with steel plates, and the steel plates are coated with lubricating oil.

Since there are joints on the steel, in order to ensure smooth dragging, 12mm thick steel plates are laid on track beam 1 7, track beam 2 8, and track beam 3 17. The steel plates are 34cm wide and coated with lubricating oil. In order to ensure the stability of track beam 1 7, track beam 2 8, and track beam 3 17, the joints of the steel plates are polished and smooth.

In this embodiment, the traction system adopts external limit, so the limit baffle 19 is welded at the intersection of track beam 1 7/track beam 2 8/track beam 3 17 (as shown in Figures 12 and 13), and bolting is adopted to facilitate the horizontal and vertical conversion of the steel beam.

In addition to track beam 28 being fixed on load-bearing beam 29, track beam 17/track beam 317 is fixed on distribution beam 16/distribution beam 216 of Bailey top, and the longitudinal beam spacing of distribution beam 16/distribution beam 216 is 750mm, which can effectively limit the longitudinal displacement of track beam 17/track beam 317. According to calculations, the deformation and stress caused by temperature changes of track beam 17/track beam 317 are small, which does not affect the dragging and sliding construction of steel beams, and will not cause longitudinal displacement of the adjusted steel beams. In order to ensure the smoothness of the steel beam dragging process, the accuracy after being in place, and reduce the workload of on-site adjustment, the processing and installation quality of track beam 17/track beam 28/track beam 317 must be guaranteed, among which the plane of track beam 17/track beam 28/track beam 317 is ≯20mm, the height difference of track beam 17/track beam 28/track beam 317 is ≯2mm, and the track beam 17/track beam 28/track beam 317 and the stainless steel sliding surface must be welded and polished smoothly, and the transition is smooth.

Embodiment 6:

Based on Example 1, this example provides a longitudinal and transverse movement construction system for an overweight and overwidth steel box girder, wherein the number of track beam one 7 and track beam three 17 is the same.

As shown in Figures 1, 4, 8 and 11, there are four track beams 1 7, two track beams 2 8 and four track beams 3 17. During sliding, the steel box beam 37 is driven by the slider 20 to move on the track beams 1 7, 2 track beams 8 and 3 track beams 17. Since the track beam 2 8 is perpendicular to the track beams 1 7 and 3 track beams 17, the number of sliders 20 can be kept unchanged during the movement direction conversion process, so there is no need to increase or decrease the sliders 20 to meet the track quantity requirements. This saves construction time.

Embodiment 7:

The present embodiment provides a construction method for longitudinal and transverse movement of an overweight and overwidth steel box girder. A steel box girder 37 is placed on a slider 20. First, the slider 20 is dragged by a hollow jack to drive the steel box girder 37 to slide along the track beam 1 7 of the steel box girder longitudinal movement bracket 38 to the transition point between track beam 1 7 and track beam 2 8. Then, the slider 20 is dragged by a hollow jack to drive the steel box girder 37 to slide along the track beam 2 8 of the steel box girder transverse movement bracket 39 to the transition point between track beam 2 8 and track beam 3 17. Finally, the slider 20 is dragged by a continuous jack 22 to drive the steel box girder 37 to slide along the side span and secondary side span steel box girder bracket 40 to the designed position.

In this embodiment, the steel box girder longitudinal displacement bracket 38 is 75m long and 38m wide, parallel to the bridge position, with the end located in the water and 20m away from the bridge position on the inner side. The steel box girder transverse displacement bracket 39 is 208m long and 24m wide. It is perpendicular to the bridge position, connecting the steel box girder longitudinal displacement bracket 38 and the secondary side span steel box girder 37 bracket and partially sharing the bracket. The side span and secondary side span steel box girder bracket 40 is 246m long and 38m wide, located in the main tower area, between the main pier and the auxiliary pier, and between the auxiliary pier and the transition pier.

The sliding system is divided into three stages: longitudinal movement on the outside of the bridge, transverse movement on the outside of the bridge and longitudinal movement at the bridge. The longitudinal and transverse movement distances on the brackets outside the bridge are shorter (38 sections of longitudinal movement brackets for steel box beams, 39 sections of transverse movement brackets for steel box beams), and a manual mechanical hollow jack 21 longitudinal and transverse movement process (hollow jack 21 + fine-rolled threaded steel 24) is adopted, as shown in Figure 14; the longitudinal movement distance on the brackets at the bridge is longer (40 sections of steel box beam brackets for side spans and secondary spans), and an electronic mechanical continuous jack 22 longitudinal movement process (continuous jack 22 + steel strand 25) is adopted, as shown in Figure 15.

Embodiment 8:

On the basis of Example 7, this embodiment provides a method for longitudinal and transverse movement of an overweight and overwidth steel box girder, wherein the slider 20 comprises a connection frame, a top plate 30 and a bottom plate 31, wherein the top plate 30 and the bottom plate 31 are respectively arranged at the upper and lower ends of the connection frame, a steel box girder pad 32 is fixedly arranged on the top plate 30, and a slider pad 33 is fixedly arranged under the bottom plate 31, and the area of the top plate 30 is smaller than that of the bottom plate 31;

The connection frame includes a front connection plate 26, a rear connection plate 27, a left connection plate 28 and a right connection plate 29 which are arranged vertically. The two ends of the front connection plate 26 and the rear connection plate 27 are connected by the left connection plate 28 and the right connection plate 29. The centers of the front connection plate 26, the rear connection plate 27, the left connection plate 28 and the right connection plate 29 are all provided with connection holes 34, and small holes 35 are provided on both sides of each connection hole 34. As shown in Figs. 16 and 17, the bottom plate and the slider pad are connected by a plurality of countersunk bolts 36.

The slider 20 is provided with connecting holes 34 in the four directions of the connecting frame. The connecting holes 34 in the corresponding directions can be connected according to the lateral or longitudinal movement direction to realize lateral and longitudinal movement. There is no need to lift the steel box girder 37 to change the direction of the slider 20, which greatly reduces the time for reinstalling the slider 20 due to track replacement, and makes high-altitude operations safer.

Embodiment 9:

Based on Example 7, this example provides a method for longitudinal and transverse movement of an overweight and overwide steel box girder.

The following steps are involved:

Step 1) Place the slider 20 on the track beam 17 of the steel box beam longitudinal displacement bracket 38, then place the steel box beam 37 on the slider 20 by hoisting, then install the fine-rolled threaded steel 24 in the connection hole 34 of the front connecting plate 26 or the rear connecting plate 27 of the slider 20, the other end of the fine-rolled threaded steel 24 is connected to the hollow jack 21, and then the slider 20 is dragged by the hollow jack to drive the steel box beam 37 to slide along the track beam 17 of the steel box beam longitudinal displacement bracket 38 to the transition point between the track beam 17 and the track beam 28;

Step 2) remove and install the finely rolled threaded steel bar 24 in the connection hole 34 of the left connection plate 28 or the right connection plate 29, and drive the steel box beam 37 to slide along the track beam 2 8 of the steel box beam transverse bracket 39 to the transition point between the track beam 2 8 and the track beam 3 17 through the hollow jack drag slider 20;

Step 3) remove the finely rolled threaded steel bar 24, install one end of the steel strand 25 in the connection hole 34 of the front connection plate 26 or the rear connection plate 27 of the slider 20, and connect the other end to the continuous jack 22, and use the continuous jack 22 to drag the slider 20 to drive the steel box girder 37 to slide along the side span and secondary side span steel box girder support 40 to the designed position;

Step 4) Use a double-acting jack to accurately locate the position of the steel box girder 37, and at the same time replace the slider 20 to support the steel box girder 37 with a pad.

The hollow jack 21 is longitudinally moved on the steel box girder longitudinal moving bracket 38 for construction. Each segment of the steel box girder 37 of the hollow jack 21 longitudinally moves through 4 track beams 7, which are composed of 8 sliders 20, 4 groups of 4 φ32 finely rolled threaded steel bars 24, 4 groups of 8 φ18 finely rolled threaded steel bars 24, 4 50t hollow jacks 21, and 4 reaction seats 23. According to the opening position of the reaction seat 23, the hollow jack 21 travels 38m per stroke, and the position of the jack is moved after each stroke before the next stroke can be dragged.

The hollow jack 21 is transversely moved on the steel box girder transverse support 39 for construction. Each segment of the steel box girder 37 of the hollow jack 21 is pulled through two track beams 28, and is composed of 8 sliders 20, 2 groups of 4 φ32 finely rolled threaded steel bars 24, 4 groups of 8 φ18 finely rolled threaded steel bars 24, 2 sets of 210 hollow jacks 21, and 2 reaction seats 23. The continuous jack 22 is longitudinally moved on the side span and secondary side span steel box girder support 40 for construction. Each segment of the steel box girder 37 of the continuous jack 22 is longitudinally moved through 4 track beams 317, and is composed of 8 sliders 20, 4 groups of 8 φ15.2 steel strands 25, 4 groups of 8 φ18 finely rolled threaded steel bars 24, 4 sets of 50t continuous jacks 22, and 4 reaction seats 23. Among them, the front and rear sliders 20 are connected by steel bars passing through small holes.

Embodiment 10:

Based on Example 7, this example provides a method for longitudinal and transverse movement of an overweight and overwide steel box girder.

The reaction seat 23 of the hollow jack 21 is bolted to the ends of the track beam 1 7 and the track beam 2 8 , and the continuous jack 22 is bolted to the track beam 3 17 .

The reaction seat 23 of the hollow jack 21 is bolted to the track beam 1 7 and the track beam 2 8 to facilitate position conversion. The continuous jack 22 is fixed on the reaction seat 23. After each beam section is dragged into place, the position of the dragging system needs to be moved, so the reaction seat 23 of the continuous jack 22 is also bolted to the track beam 3 17. At the same time, steel pads and sliders 20 are used for conversion.

Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims (8)

1. An overweight ultra-wide steel box girder moves construction system vertically and horizontally, which is characterized in that: the track beam system is arranged on the bracket system, and the traction system is used for dragging the steel box beam (37) to slide along the track beam system;

The support system comprises a steel box girder longitudinal moving support (38), a steel box girder transverse moving support (39) and a side span and side span steel box girder support (40), wherein the steel box girder transverse moving support (39) is perpendicular to the steel box girder longitudinal moving support (38) and the side span and side span steel box girder support (40), two ends of the steel box girder transverse moving support (39) are respectively connected with the steel box girder longitudinal moving support (38) and the side span and side span steel box girder support (40) to form a shared area, the track girder system comprises a track girder I (7), a track girder II (8) and a track girder III (17), the track girder I (7) is arranged on the steel box girder longitudinal moving support (38), the track girder II (8) is arranged on the steel box girder support (39), and the track girder III (17) is arranged on the side span and side span steel box girder support (40);

The steel box girder longitudinal moving support (38) comprises a first upright column (1), a first parallel connection (2), a first inclined strut (3), a first spandrel girder (4), a bailey frame (5) and a first distribution girder (6), wherein a plurality of first upright columns (1) are arranged transversely and longitudinally, the first parallel connection (2) is welded on the first upright column (1) and is provided with a plurality of layers in the transverse and longitudinal directions, and the first inclined strut (3) is arranged among the first parallel connection layers (2);

The top end of the first upright post (1) is sequentially provided with a first spandrel girder (4), a bailey frame (5) and a first distribution girder (6) from bottom to top, the first spandrel girder (4) and the first distribution girder (6) are transversely arranged, and the track girder is fixedly arranged on the first distribution girder (6);

The steel box girder transverse moving support (39) comprises two columns (12), two parallel connection columns (11), two inclined struts (10), two bearing beams (9) and a bailey frame (5), wherein the two columns (12) are transversely arranged in two rows, a plurality of the two rows are arranged, two rows of first columns (1) at the tail end of the steel box girder longitudinal moving support (38) and the two columns (12) at the head end of each row enclose a shared area I, the two parallel connection columns (11) are welded between the two adjacent columns (12), the two adjacent columns (1) and the two columns (12) and are provided with multiple layers in the transverse and longitudinal directions, and the two inclined struts (10) are arranged between the two uppermost layers of parallel connection columns (11) and the two lowermost layers of parallel connection columns (11);

the bearing beam II (9) is arranged on the upright post II (12), the bailey frame (5) is arranged on the bearing beam II (9), the track beam II (8) is fixedly arranged on the bailey frame (5), and the bearing beam II (9) and the bailey frame (5) are both arranged along the transverse direction.

2. The ultra-wide steel box girder longitudinal and transverse movement construction system according to claim 1, wherein: the side span secondary side span steel box girder support (40) comprises three upright posts (13), three parallel connection (15), three diagonal braces (14), three spandrel girders (18), bailey frames (5) and distribution Liang Er (16), wherein the three upright posts (13) are longitudinally arranged in a plurality of rows, two rows of three upright posts (13) are shared with the steel box girder transverse movement support (39), the two rows of three upright posts (13) and two upright posts (12) positioned on the same straight line enclose a shared area II, the three parallel connection (15) is welded between the three upright posts (13) which are longitudinally arranged and is provided with a plurality of layers, the three diagonal braces (14) are transversely welded between the adjacent two layers of three parallel connection (15), and are longitudinally welded between the two layers of three parallel connection (15);

The top end of the upright post III (13) is sequentially provided with a spandrel girder III (18), a bailey frame (5) and a distribution Liang Er (16) from bottom to top, the track girder III (17) is fixedly arranged on the distribution Liang Er (16), and the spandrel girder III (18) and the distribution Liang Er (16) are both arranged along the transverse direction.

3. The ultra-wide steel box girder longitudinal and transverse movement construction system according to claim 1, wherein: the first track beam (7) and the third track beam (17) are 3-beam I-beams, the second track beam (8) is 2-beam I-beams, steel plates are paved on the first track beam (7), the second track beam (8) and the third track beam (17), and lubricating oil is coated on the steel plates.

4. The ultra-wide steel box girder longitudinal and transverse movement construction system according to claim 1, wherein: the number of the first track beams (7) and the number of the third track beams (17) are the same.

5. An overweight and ultra-wide steel box girder longitudinal and transverse moving construction method, which uses the overweight and ultra-wide steel box girder longitudinal and transverse moving construction system as claimed in claim 1, and is characterized in that: the steel box girder (37) is placed on the sliding block (20), the sliding block (20) is pulled through the hollow jack (21) to drive the steel box girder (37) to slide to the conversion position of the first rail girder (7) and the second rail girder (8) along the rail girder (7) of the steel box girder longitudinal moving support (38), then the sliding block (20) is pulled through the hollow jack (21) to drive the steel box girder (37) to slide to the conversion position of the second rail girder (8) and the third rail girder (17) along the rail girder (8) of the steel box girder transverse moving support (39), and finally the sliding block (20) is pulled through the continuous jack (22) to drive the steel box girder (37) to slide to the design position along the edge span steel box girder support (40).

6. The method for longitudinally and laterally moving the super-heavy ultra-wide steel box girder according to claim 5, which is characterized in that: the sliding block (20) comprises a connecting frame, a top plate (30) and a bottom plate (31), wherein the top plate (30) and the bottom plate (31) are respectively arranged at the upper end and the lower end of the connecting frame, a steel box girder base plate (32) is fixedly arranged on the top plate (30), a sliding block base plate (33) is fixedly arranged under the bottom plate (31), and the area of the top plate (30) is smaller than that of the bottom plate (31);

The connecting frame comprises a front connecting plate (26), a rear connecting plate (27), a left connecting plate (28) and a right connecting plate (29) which are vertically arranged, wherein the two ends of the front connecting plate (26) and the rear connecting plate (27) are connected with the right connecting plate (29) through the left connecting plate (28), and the centers of the front connecting plate (26), the rear connecting plate (27), the left connecting plate (28) and the right connecting plate (29) are provided with connecting holes (34), and small holes (35) are formed in the two sides of each connecting hole (34).

7. The method for longitudinally and laterally moving the super-heavy ultra-wide steel box girder according to claim 6, which is characterized by comprising the following steps:

Step 1), placing a sliding block (20) on a first rail beam (7) of a steel box beam longitudinal moving support (38), then placing a steel box beam (37) on the sliding block (20) through hoisting, then installing finish rolling deformed steel bars (24) in connecting holes (34) of a front connecting plate (26) or a rear connecting plate (27) of the sliding block (20), connecting the other end of the finish rolling deformed steel bars (24) with a hollow jack (21), and then dragging the sliding block (20) through the hollow jack (21) to drive the steel box beam (37) to slide to a transition position of the first rail beam (7) and the second rail beam (8) along the first rail beam (7) of the steel box beam longitudinal moving support (38);

Step 2) detaching and installing the finish-rolled deformed steel bar (24) in a connecting hole (34) of a left connecting plate (28) or a right connecting plate (29), and dragging a sliding block (20) through a hollow jack (21) to drive a steel box girder (37) to slide to a conversion position of a second track girder (8) and a third track girder (17) along a second track girder (8) of a transverse sliding bracket (39) of the steel box girder;

Step 3) detaching finish-rolled deformed steel bars (24), installing one end of a steel strand (25) in a connecting hole (34) of a front connecting plate (26) or a rear connecting plate (27) of a sliding block (20), connecting the other end of the steel strand with a continuous jack (22), and dragging the sliding block (20) through the continuous jack (22) to drive a steel box girder (37) to slide to a designed position along a side span and side span steel box girder bracket (40);

and 4) accurately positioning the position of the steel box girder (37) by adopting a double-acting jack, and simultaneously pouring out the sliding block (20) and supporting the steel box girder (37) by using a cushion block.

8. The method for longitudinally and laterally moving the super-heavy ultra-wide steel box girder according to claim 7, which is characterized in that: the counter-force seat (23) of the hollow jack (21) is in bolt connection with the tail ends of the first track beam (7) and the second track beam (8), and the continuous jack (22) is in bolt connection with the third track beam (17).