Steel guide beam structure for incremental launching construction of steel box beam

Abstract

The utility model discloses a steel guide beam structure for steel box beam incremental launching construction, which comprises a steel guide main beam, the steel guide main beam comprises a steel guide beam far-end section, a steel guide beam middle section and a steel guide beam near-end section, and the steel guide beam far-end section and the steel guide beam near-end section are connected by the steel guide beam middle section; the bottom face of the steel guide beam far-end section, the bottom face of the steel guide beam middle section and the bottom face of the steel guide beam near-end section are located on the same plane. Reinforcing ribs are correspondingly arranged at the bottom of the steel guide beam far-end section, the bottom of the steel guide beam middle section and the bottom of the steel guide beam near-end section respectively. The end, used for being connected with the steel box girder, of the near-end section of the steel guide girder is provided with a connecting end I with the preset height H1 and a connecting end II with the preset height H2, and H1 is not equal to H2; the steel guide beam can be suitable for different steel box beam section heights, so that the turnover frequency of the steel guide beam is greatly increased, and the machining and using cost of the flattened steel guide beam is greatly increased.

Description

Technical Field

[0001] The utility model relates to the field of building steel structure box girder jacking construction, in particular to a steel guide beam structure used for steel box girder jacking construction. Background Art

[0002] During the construction of steel box girders using the jacking method, steel guide beams are generally specially designed according to the cross-sectional characteristics of the steel box girder to adapt to construction needs. Therefore, steel guide beams can generally only be used for this project and cannot be circulated at different project sites. This makes it impossible to achieve standardized production of steel guide beams and the number of turnover times is low, which easily increases construction costs, reduces material utilization, and is not conducive to the recycling of steel guide beams.

[0003] Therefore, in order to solve the above problems, a steel guide beam structure for steel box girder jacking construction is needed, which can make the steel guide beam suitable for different steel box girder cross-sectional heights, thereby greatly increasing the turnover times of the steel guide beam and spreading the processing and use costs of the steel guide beam. Utility Model Content

[0004] In view of this, the purpose of the utility model is to overcome the defects in the prior art and provide a steel guide beam structure for the jacking construction of steel box beams, which can make the steel guide beams suitable for different steel box beam cross-sectional heights, thereby greatly increasing the turnover times of the steel guide beams and spreading the processing and use costs of the steel guide beams.

[0005] The utility model discloses a steel guide beam structure for steel box beam jacking construction, comprising a steel guide main beam and a connecting truss, wherein the steel guide main beam comprises at least two pieces arranged in parallel, the connecting truss connects the two pieces of the steel guide main beam in parallel to the transverse direction, the two pieces of the steel guide main beam are fixed by the connecting truss to form a whole, and the transverse projections of the two pieces of the steel guide main beam overlap;

[0006] Furthermore, the connecting truss is a rectangular cubic truss connected between two pieces of the steel guide main beams.

[0007] Further, the connecting truss is hingedly connected to the steel guide main beam, and the axis of the pin connecting the connecting truss and the steel guide main beam is parallel to the vertical direction;

[0008] The end of the connecting truss connecting the steel guide main beam is provided with four hinged positions, and the four hinged positions are correspondingly distributed at the four corners of the rectangular end of the connecting truss.

[0009] Further, the steel guide main beam comprises a steel guide beam distal segment, a steel guide beam middle segment and a steel guide beam proximal segment, and the steel guide beam middle segment connects the steel guide beam distal segment and the steel guide beam proximal segment;

[0010] The proximal end segment of the steel guide beam is used to connect to the steel box beam at one end, which has a connection end I with a preset height H1 and a connection end II with a preset height H2, wherein H1≠H2, so that the steel guide beam in this scheme can adapt to at least two steel box beams with different cross-sectional heights, thereby greatly increasing the turnover times of the steel guide beam and spreading the processing and use costs of the steel guide beam.

[0011] Further, the connecting truss includes a distal connecting truss, an intermediate connecting truss and a proximal connecting truss, and the proximal connecting truss is connected to the connecting position of the proximal segment of the steel guide beam and the intermediate segment of the steel guide beam;

[0012] The bottom end of the proximal connecting truss is close to the bottom of the proximal segment of the steel guide beam in the height direction, and the height of the proximal connecting truss is roughly consistent with the height of the middle flange plate; the bottom end of the middle connecting truss is close to the bottom of the middle segment of the steel guide beam in the height direction, the top end of the middle connecting truss is close to the top of the middle segment of the steel guide beam in the height direction, and the middle connecting truss is close to the distal segment of the steel guide beam and connected to the middle segment of the steel guide beam; the bottom end of the distal connecting truss is close to the bottom of the distal segment of the steel guide beam in the height direction, and the distal connecting truss is roughly connected to the middle of the extension direction of the distal segment of the steel guide beam, and the height of the distal connecting truss is roughly consistent with the front end height of the distal segment of the steel guide beam;

[0013] The connecting truss can be any suitable truss in the prior art to achieve the corresponding connecting function, which will not be described in detail here.

[0014] Furthermore, the bottom surface of the distal segment of the steel guide beam, the bottom surface of the middle segment of the steel guide beam and the bottom surface of the proximal segment of the steel guide beam are located in the same plane; the bottom of the distal segment of the steel guide beam, the bottom of the middle segment of the steel guide beam and the bottom of the proximal segment of the steel guide beam are respectively provided with reinforcing ribs; in the present embodiment, the reinforcing ribs respectively correspond to the bottom surfaces of the steel guide beam, the middle segment of the steel guide beam and the proximal segment of the steel guide beam to form rectangular structural cavities of equal volume, thereby improving the structural rigidity and reliability of the steel guide beam.

[0015] Furthermore, the height of the distal segment of the steel guide beam is less than the height of the middle segment of the steel guide beam and less than the height of the proximal segment of the steel guide beam, which plays a role in reducing weight, minimizing the deflection deformation of the guide beam itself, reducing the overhang length of the large beam and thus reducing the installation stress.

[0016] Furthermore, the distal bottom of the distal end section of the steel guide beam has a pier recess which is recessed upward from bottom to top, and the recessed surface of the pier recess is parallel to the bottom surface of the distal end section of the steel guide beam.

[0017] Furthermore, the pier recess is rectangular.

[0018] Further, the proximal end section of the steel guide beam is an I-beam, and the upper flange plate and the lower flange plate of the proximal end section of the steel guide beam overlap in vertical projection and are connected by a web plate;

[0019] The front end of the upper flange of the proximal segment of the steel guide beam is inclined upward from front to back to form a steel guide beam proximal segment weight reduction section, and the rear end of the upper flange of the proximal segment of the steel guide beam extends forward horizontally to smoothly transition and connect with the steel guide beam proximal segment weight reduction section;

[0020] The lower flange of the proximal end segment of the steel guide beam is parallel to the horizontal plane;

[0021] A connection end I with a preset height H1 is formed between the upper flange and the lower flange of the proximal end segment of the steel guide beam, and an intermediate flange plate is also connected between the upper flange and the lower flange of the proximal end segment of the steel guide beam. The intermediate flange plate is parallel to the upper flange of the proximal end segment of the steel guide beam, and a connection end II with a preset height H2 is formed between the intermediate flange plate and the lower flange of the proximal end segment of the steel guide beam.

[0022] Furthermore, a steel guide beam proximal segment reinforcement rib is connected to the web of the steel guide beam proximal segment, the steel guide beam proximal segment reinforcement rib is upwardly connected to the upper flange of the steel guide beam proximal segment, the steel guide beam proximal segment reinforcement rib is downwardly connected to the lower flange of the steel guide beam proximal segment, and at the arrangement position of the middle flange, the steel guide beam proximal segment reinforcement rib also connects the middle flange plate;

[0023] Furthermore, a weight-reducing hole is provided on the reinforcement rib of the proximal end segment of the steel guide beam near the front end of the proximal end segment of the steel guide beam.

[0024] The reinforcing rib of the proximal end segment of the steel guide beam has an anti-torsion notch I which is recessed in the transverse direction toward the web of the proximal end segment of the steel guide beam.

[0025] Furthermore, the reinforcement ribs of the proximal segment of the steel guide beam are perpendicular to the web of the proximal segment of the steel guide beam, and the reinforcement ribs of the proximal segment of the steel guide beam are a plurality of pieces symmetrically distributed on both sides of the web of the proximal segment of the steel guide beam in the transverse direction, and the plurality of reinforcement ribs of the proximal segment of the steel guide beam are arranged at intervals along the longitudinal direction.

[0026] Furthermore, the rear end of the upper flange of the proximal end segment of the steel guide beam is extended backward to form a functional segment, and the functional segment includes a tapered transition segment with a size gradually increasing from front to rear and an extended segment extending horizontally backward from the rear end of the tapered transition segment;

[0027] The transverse middle part of the rear end of the extension section is recessed from back to front to form a functional recess, and the projection of the functional recess in the vertical direction is in the shape of a door arch, which reduces weight and improves torsional resistance.

[0028] Furthermore, an auxiliary steel guide beam proximal segment web is provided on the extension section at the rear end of the steel guide beam proximal segment, the auxiliary steel guide beam proximal segment web is upwardly connected to the upper flange of the steel guide beam proximal segment, the auxiliary steel guide beam proximal segment web is downwardly connected to the lower flange of the steel guide beam proximal segment, and the auxiliary steel guide beam proximal segment web is parallel to the steel guide beam proximal segment web;

[0029] The auxiliary steel guide beam proximal segment web is composed of two pieces symmetrically arranged in the transverse direction of the steel guide beam proximal segment web. The two pieces of the auxiliary steel guide beam proximal segment web connect the corresponding side steel guide beam proximal segment reinforcement ribs in the transverse direction.

[0030] Further, the middle section of the steel guide beam is an I-beam, the rear end of the upper flange of the middle section of the steel guide beam is inclined downward from the back to the front to form a steel guide beam middle section weight reduction section, and the front end of the upper flange of the middle section of the steel guide beam extends horizontally backward to smoothly transition and connect with the steel guide beam middle section weight reduction section;

[0031] The lower flange of the middle section of the steel guide beam is parallel to the horizontal plane.

[0032] Furthermore, a steel guide beam middle section reinforcement rib is connected to the web of the steel guide beam middle section, and the steel guide beam middle section reinforcement rib is connected upward to the upper flange of the steel guide beam middle section.

[0033] The inter-segment reinforcement rib is connected downwardly to the lower flange of the middle segment of the steel guide beam;

[0034] The reinforcing rib of the middle section of the steel guide beam has an anti-torsion notch II which is recessed in the transverse direction toward the web of the middle section of the steel guide beam.

[0035] Furthermore, the reinforcing ribs of the middle section of the steel guide beam are perpendicular to the web of the middle section of the steel guide beam, and the reinforcing ribs of the middle section of the steel guide beam are a plurality of pieces symmetrically distributed on both sides of the web of the middle section of the steel guide beam in the transverse direction, and the plurality of reinforcing ribs of the middle section of the steel guide beam are arranged at intervals along the longitudinal direction.

[0036] Further, the upper flange inclination angle of the weight reduction section of the proximal section of the steel guide beam is consistent with the upper flange inclination angle of the weight reduction section of the middle section of the steel guide beam, the front end height of the proximal section of the steel guide beam is consistent with the rear end height of the middle section of the steel guide beam, the upper flange width of the proximal section of the steel guide beam used to connect with the middle section of the steel guide beam is consistent with the upper flange width of the middle section of the steel guide beam used to connect with the proximal section of the steel guide beam, and the lower flange width of the proximal section of the steel guide beam used to connect with the middle section of the steel guide beam is consistent with the lower flange width of the middle section of the steel guide beam used to connect with the proximal section of the steel guide beam;

[0037] The front end of the upper flange of the proximal section of the steel guide beam and the rear end of the upper flange of the middle section of the steel guide beam are fixed by a rear end flange bolt group through a rear flange pad; the web of the proximal section of the steel guide beam and the web of the middle section of the steel guide beam are fixed by a rear end web bolt group through a rear web pad; the bottom surface of the front end of the lower flange of the proximal section of the steel guide beam and the bottom surface of the rear end of the lower flange of the middle section of the steel guide beam are welded and fixed in the same horizontal plane.

[0038] Furthermore, the front end height of the middle section of the steel guide beam is substantially the same as H2.

[0039] Furthermore, the distal segment of the steel guide beam is an I-beam, the rear end of the upper flange of the distal segment of the steel guide beam is inclined downward from the rear to the front to form a weight reduction section of the distal segment of the steel guide beam, and the front end of the upper flange of the distal segment of the steel guide beam extends horizontally backward to smoothly transition and connect with the weight reduction section of the distal segment of the guide beam;

[0040] The lower flange of the distal end segment of the steel guide beam is parallel to the horizontal plane.

[0041] Furthermore, a steel guide beam distal segment reinforcement rib is connected to the web of the steel guide beam distal segment, the steel guide beam distal segment reinforcement rib is upwardly connected to the upper flange of the steel guide beam distal segment, and the steel guide beam distal segment reinforcement rib is downwardly connected to the lower flange of the steel guide beam distal segment;

[0042] The reinforcing rib of the distal end segment of the steel guide beam has an anti-torsion notch III which is recessed in the transverse direction toward the web of the distal end segment of the steel guide beam.

[0043] The structures of the anti-torsion recess I, the anti-torsion recess II and the anti-torsion recess III are roughly the same. This scheme only shows the structure of the anti-torsion recess I as an example and will not be repeated here.

[0044] Furthermore, the reinforcing ribs of the distal segment of the steel guide beam are perpendicular to the web of the distal segment of the steel guide beam, and the reinforcing ribs of the distal segment of the steel guide beam are a plurality of pieces symmetrically distributed on both sides of the web of the distal segment of the steel guide beam in the transverse direction, and the plurality of reinforcing ribs of the distal segment of the steel guide beam are arranged at intervals along the longitudinal direction.

[0045] Furthermore, the distal segment of the steel guide beam also includes a distal segment connecting segment of the steel guide beam formed by horizontally extending backward from the rear end of the weight reduction segment of the distal segment of the steel guide beam, and the distal segment connecting segment of the steel guide beam is used to be assembled and joined with the front end of the middle segment of the steel guide beam; the width of the distal segment of the steel guide beam is smaller than the width of the middle segment of the steel guide beam, and the front end of the middle segment of the steel guide beam is contracted forward to be consistent with the width of the distal segment of the steel guide beam and then extends forward to form a steel guide beam middle segment connecting segment, and the middle segment connecting segment of the steel guide beam is used to be assembled and joined with the front end of the distal segment of the steel guide beam.

[0046] Further, the upper flange inclination angle of the weight reduction section of the distal segment of the steel guide beam is greater than the upper flange inclination angle of the weight reduction section of the middle segment of the steel guide beam, the rear end height of the distal segment of the steel guide beam is consistent with the front end height of the middle segment of the steel guide beam, the upper flange width of the distal segment of the steel guide beam used to connect with the middle segment of the steel guide beam is consistent with the upper flange width of the middle segment of the steel guide beam used to connect with the distal segment of the steel guide beam, and the lower flange width of the distal segment of the steel guide beam used to connect with the middle segment of the steel guide beam is consistent with the lower flange width of the middle segment of the steel guide beam used to connect with the distal segment of the steel guide beam;

[0047] The front end of the upper flange of the middle section of the steel guide beam and the rear end of the upper flange of the distal section of the steel guide beam are fixed by a front end flange bolt group through a front flange pad; the web of the middle section of the steel guide beam and the web of the distal section of the steel guide beam are fixed by a front end web bolt group through a front web pad; the bottom surface of the front end of the lower flange of the middle section of the steel guide beam and the bottom surface of the rear end of the lower flange of the distal section of the steel guide beam are welded and fixed in the same horizontal plane.

[0048] The beneficial effects of the utility model are as follows: the utility model discloses a steel guide beam structure for steel box girder jacking construction, which connects two steel guide main beams in parallel with the horizontal direction through a connecting truss, thereby further strengthening the structural strength of the steel guide beam and reducing the deformation of the steel guide beam under horizontal load; the connecting truss is hingedly connected to the steel guide main beam, and the axis of the pin connecting the connecting truss and the steel guide main beam is parallel to the vertical direction; the end of the connecting truss connecting the steel guide main beam is provided with four hinge positions, and the four hinge positions are correspondingly distributed at the four corners of the rectangular end of the connecting truss, thereby increasing the degree of freedom of the pin joint and facilitating installation and disassembly; so that the steel guide beam in this scheme can be assembled to adjust the horizontal span, further adapt to the structure of inconsistent widths of various bridge decks, and enhance the flexibility of the assembly structure. Increase turnover adaptability and reduce construction costs; the steel guide main beam includes a steel guide beam distal segment, a steel guide beam middle segment and a steel guide beam proximal segment, the steel guide beam middle segment connects the steel guide beam distal segment and the steel guide beam proximal segment, so that the structural length and weight of each section of the steel guide main beam are controllable, which is convenient for transportation and installation, and the assembled steel guide beam structure is more conducive to the convenience of transportation turnover; the steel guide beam proximal segment is used to connect to the steel box beam at one end with a connection end I with a preset height H1 and a connection end II with a preset height H2, and H1≠H2, so that the steel guide beam in this scheme can adapt to at least two steel box beams with different cross-sectional heights to meet the requirements of jacking of steel box beams with different cross-sectional heights, thereby greatly increasing the turnover times of the steel guide beam and spreading the processing and use costs of the steel guide beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0050] Figure 1 It is a side view structural schematic diagram of the utility model;

[0051] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0052] Figure 3 For this utility model Figure 1 A schematic diagram of the structure at A;

[0053] Figure 4 For this utility model Figure 3 BB structural diagram;

[0054] Figure 5 It is a structural schematic diagram of the proximal end segment of the steel guide beam of the utility model;

[0055] Figure 6 For this utility model Figure 5 Schematic diagram of CC structure;

[0056] Figure 7 For this utility model Figure 5 DD-direction structure diagram;

[0057] Figure 8 For this utility model Figure 5 Schematic diagram of EE structure;

[0058] Fig. 9 For this utility model Figure 5 Schematic diagram of the FF structure;

[0059] Fig.10 For this utility model Figure 5 Schematic diagram of the GG-oriented structure;

[0060] Fig.11 This is a schematic diagram of the main structure of the proximal connection truss of the utility model;

[0061] Fig.12 For this utility model Fig.11 Schematic diagram of the HH structure;

[0062] Fig.13 It is a schematic diagram of the top view of the structure of the proximal connection truss of the utility model;

[0063] Fig.14 This is a schematic diagram of the main structure of the joint of the proximal connection truss of the utility model;

[0064] Fig.15 It is a schematic diagram of the top view of the structure of the joint of the proximal connection truss of the utility model. DETAILED DESCRIPTION

[0065] Figure 1It is a structural schematic diagram of the present invention. As shown in the figure, the transverse direction is the width direction of the steel guide beam, the longitudinal direction is the extension direction of the steel guide beam, the distal end is the end of the steel guide beam that is far away from the connection with the steel box beam in the longitudinal direction, the proximal end is opposite to the distal end in the longitudinal direction, the front corresponds to the steel guide beam guiding the longitudinal direction of the steel box beam, the rear is opposite to the front in the longitudinal direction, and the vertical direction is perpendicular to both the transverse direction and the longitudinal direction, which will not be repeated here; the steel guide beam structure used for the steel box beam jacking construction in this embodiment includes a steel guide main beam and a connecting truss, the steel guide main beam includes at least two parallel pieces, the connecting truss connects the two steel guide main beams parallel to the transverse direction, the two steel guide main beams are fixed to form a whole by the connecting truss, and the transverse projections of the two steel guide main beams overlap to ensure the structural reliability of the steel guide beam.

[0066] In this embodiment, the connecting truss is a rectangular cubic truss connected between the two steel guide main beams. The connecting truss connects the two steel guide main beams parallel to the horizontal direction, further strengthening the structural strength of the steel guide beams and reducing the deformation of the steel guide beams under horizontal load.

[0067] In the present embodiment, the connecting truss is hingedly connected to the steel guide main beam, and the axis of the pin connecting the connecting truss and the steel guide main beam is parallel to the vertical direction; the end of the connecting truss connected to the steel guide main beam is provided with four hinge positions, and the four hinge positions are correspondingly distributed at the four corners of the rectangular end of the connecting truss, thereby increasing the degree of freedom of the pin joint and facilitating installation and disassembly; so that the steel guide beam in the present scheme can be assembled to adjust the use of the transverse span, further adapt to the use of structures with inconsistent widths of various bridge decks, enhance the flexibility of the assembly structure, increase turnover adaptability, and reduce construction costs.

[0068] In this embodiment, the steel guide main beam includes a steel guide beam distal segment 3, a steel guide beam middle segment 2 and a steel guide beam proximal segment 1, wherein the steel guide beam middle segment 2 connects the steel guide beam distal segment 3 and the steel guide beam proximal segment 1, and this scheme only shows the view of the steel guide beam proximal segment 1 with a relatively complex structure as an example, wherein the structures of the steel guide beam middle segment 2 and the steel guide beam distal segment 3 are roughly the same as the front end structure of the steel guide beam proximal segment 1, which will not be repeated here; the length and weight of each section of the steel guide main beam are controllable, which is convenient for transportation and installation, and the assembled steel guide beam structure is more conducive to the convenience of transportation turnover;

[0069] The proximal end segment 1 of the steel guide beam is used to connect to the steel box beam at one end, and has a connection end I with a preset height H1 and a connection end II with a preset height H2, wherein H1≠H2, so that the steel guide beam in this scheme can adapt to at least two steel box beams with different cross-sectional heights to meet the requirements of jacking of steel box beams with different cross-sectional heights, thereby greatly increasing the turnover times of the steel guide beam and spreading the processing and use costs of the steel guide beam.

[0070] In this embodiment, the connecting truss includes a distal connecting truss 6, an intermediate connecting truss 5 and a proximal connecting truss 4; this solution only takes the proximal connecting truss 4 as an example, and the structures of the distal connecting truss 6 and the intermediate connecting truss 5 are roughly the same as those of the proximal connecting truss 4, which will not be repeated here.

[0071] The proximal connecting truss 4 is connected to the connecting position of the proximal segment 1 of the steel guide beam and the middle segment 2 of the steel guide beam. Since this position is closer to the assembly position of the steel guide beam and the steel box beam, a more reliable structural reinforcement is made at the connecting node of the two segments to ensure the connection strength at this position and improve the reliability of the overall structure of the steel guide beam; and the bottom end of the proximal connecting truss 4 is close to the bottom of the proximal segment 1 of the steel guide beam in the height direction, and the height of the proximal connecting truss 4 is roughly consistent with the height of the middle flange plate 9; so that no matter whether the connection end I or the connection end II is connected to the steel box beam with a preset cross-sectional height, the steel guide beam can have good continuity, and the force of the middle segment 2 of the steel guide beam can be transmitted not only to the assembly joint position of the proximal segment 1 of the steel guide beam and the steel box beam, but also to the joint position of the proximal segment 1 of the steel guide beam and the middle segment 2 of the steel guide beam to assemble the proximal connecting truss 4, so that the proximal segment 1 of the steel guide beam and the middle segment 2 of the steel guide beam connected to form a whole can provide a cantilever fulcrum with better rigidity for the subsequent segments.

[0072] The bottom end of the intermediate connecting truss 5 is close to the bottom of the middle section 2 of the steel guide beam in the height direction, the top end of the intermediate connecting truss 5 is close to the top of the middle section 2 of the steel guide beam in the height direction, and the intermediate connecting truss 5 is close to the distal section 3 of the steel guide beam and is connected to the middle section 2 of the steel guide beam; the intermediate connecting truss 5 is located at the rear side of the steel guide beam distal section 3 connected to the middle section 2 of the steel guide beam in the transverse direction, which improves the connection strength, ensures the reliability of the steel guide beam structure, and can reduce the distance between the distal section 3 of the steel guide beam and the middle section 2 of the steel guide beam. The joining quality of segment 2 prevents the deflection of the far end of the cantilever and provides a cantilever fulcrum with better rigidity for the far end segment 3 of the steel guide beam; the force of the far end segment 3 of the steel guide beam can be transmitted not only to the assembly joining position of the proximal end segment 1 of the steel guide beam and the steel box beam, but also to the joining position of the proximal end connecting truss 4 assembled between the proximal end segment 1 of the steel guide beam and the middle segment 2 of the steel guide beam, and also to the joining position of the far end segment 3 of the steel guide beam and the middle segment 2 of the steel guide beam to improve the reliability of the structure.

[0073] The bottom end of the distal connecting truss 6 is close to the bottom of the steel guide beam distal segment 3 in the height direction, and the distal connecting truss 6 is roughly connected to the middle of the extension direction of the steel guide beam distal segment 3. The height of the distal connecting truss 6 is roughly consistent with the front end height of the steel guide beam distal segment 3, so that the steel guide beam distal segment 3 with the distal connecting truss 6 forms a reliable and stable whole, and the front end of the cantilever can form a reliable connection with the entire steel guide beam. The whole and local connection strength is improved, the reliability of the steel guide beam is ensured, and at the same time, the rigidity of the front end of the cantilever is improved, and the deflection of the front end of the cantilever is reduced.

[0074] The bottom of the distal connecting truss 6, the bottom of the intermediate connecting truss 5 and the bottom of the proximal connecting truss 4 are approximately located in the same horizontal plane, which is a plane perpendicular to the vertical direction, so as to prevent local stress concentration, improve the use requirements of the steel guide beam structure strength, and meet the multi-use requirements of transportation;

[0075] The connecting truss can be any suitable truss in the prior art to achieve the corresponding connecting function, which will not be described in detail here.

[0076] In this embodiment, the bottom surface of the distal segment 3 of the steel guide beam, the bottom surface of the middle segment 2 of the steel guide beam and the bottom surface of the proximal segment 1 of the steel guide beam are located in the same plane; the bottom of the distal segment 3 of the steel guide beam, the bottom of the middle segment 2 of the steel guide beam and the bottom of the proximal segment 1 of the steel guide beam are respectively provided with reinforcing ribs 7; in this scheme, the reinforcing ribs 7 correspond to the bottom surfaces of the distal segment 3 of the steel guide beam, the bottom surfaces of the middle segment 2 of the steel guide beam and the bottom surfaces of the proximal segment 1 of the steel guide beam, respectively, to form a rectangular structural cavity of equal volume, thereby improving the structural rigidity and reliability of the steel guide beam and further preventing the deflection of the front end of the steel guide beam.

[0077] In this embodiment, the height of the distal segment 3 of the steel guide beam is less than the height of the middle segment 2 of the steel guide beam and less than the height of the proximal segment 1 of the steel guide beam. The height of the steel guide beam is gradually reduced to reduce the deadweight of the steel guide beam, so as to meet the larger span requirement with a smaller deadweight; the deflection deformation of the steel guide beam itself is minimized, and the overhang length of the large beam is reduced to reduce the installation stress.

[0078] In this embodiment, the distal bottom of the distal end segment 3 of the steel guide beam has a pier recess 8 that is recessed upward from bottom to top, and the recessed surface of the pier recess 8 is parallel to the bottom surface of the distal end segment 3 of the steel guide beam; the pier recess 8 is rectangular, and the bottom surface of the pier recess 8 is roughly flush with the top edge of the rectangular structure chamber, which improves the structural reliability. The pier recess 8 can provide the necessary pier top space for the steel guide beam, facilitate the jacking operation, and reduce unnecessary equipment investment; and the pier recess 8 is located at the front end of the steel guide beam structure, and after the steel guide beam deflects downward, it can ensure that the upper part of the pier recess 8 passes through the front end obstacle of the jacking, thereby ensuring the normal and continuous jacking of the steel guide beam.

[0079] In this embodiment, the proximal end segment 1 of the steel guide beam is an I-beam, which has a more reliable structure and is more convenient to process. The upper flange plate and the lower flange plate of the proximal end segment 1 of the steel guide beam overlap in vertical projection and are connected by a web plate;

[0080] The front end of the upper flange of the proximal segment 1 of the steel guide beam is inclined upward from front to back to form a steel guide beam proximal segment weight reduction section, and the rear end of the upper flange of the proximal segment 1 of the steel guide beam extends horizontally forward to smoothly transition and connect with the proximal segment weight reduction section of the steel guide beam; the smooth transition is to avoid the connection formed by direct bending, but to smoothly transition the connection in the form of curved bending, so as to reduce the stress concentration at the transition position as much as possible and improve the structural reliability;

[0081] The lower flange of the proximal end segment 1 of the steel guide beam is parallel to the horizontal plane;

[0082] A connection end I with a preset height H1 is formed between the upper flange and the lower flange of the proximal segment 1 of the steel guide beam, and an intermediate flange plate 9 is also connected between the upper flange and the lower flange of the proximal segment 1 of the steel guide beam. The intermediate flange plate 9 is parallel to the upper flange of the proximal segment 1 of the steel guide beam, and a connection end II with a preset height H2 is formed between the intermediate flange plate 9 and the lower flange of the proximal segment 1 of the steel guide beam. That is, the assembly reference surface of the steel guide beam in this scheme is the bottom surface. Selecting a steel box beam with a corresponding assembly height from bottom to top can reduce the stress at the connection end between the steel guide beam and the steel box beam, thereby providing a more reliable connection interface for the steel guide beam.

[0083] In this embodiment, a steel guide beam proximal segment reinforcement rib 10 is connected to the web of the proximal segment 1 of the steel guide beam, which can increase the overall strength of the steel guide beam. The steel guide beam proximal segment reinforcement rib 10 is upwardly connected to the upper flange of the proximal segment 1 of the steel guide beam, and the steel guide beam proximal segment reinforcement rib 10 is downwardly connected to the lower flange of the proximal segment 1 of the steel guide beam. At the arrangement position of the middle flange plate 9, the steel guide beam proximal segment reinforcement rib 10 also connects the middle flange plate 9, further embodying the use function of the steel guide beam proximal segment reinforcement rib 10 and providing the steel guide beam with a structure with better rigidity.

[0084] In this embodiment, a weight-reducing hole 11 is opened on the reinforcement rib 10 of the proximal end segment of the steel guide beam near the front end of the proximal end segment 1 of the steel guide beam, so as to further reduce the mass of the connection between the steel guide beam and the steel box beam, reduce the concentration of stress at the connection between the steel guide beam and the steel box beam, and make the use of the steel guide beam more reliable.

[0085] The reinforcing rib 10 of the proximal end segment of the steel guide beam has an anti-torsion notch Ⅰ12 which is recessed in the web of the proximal end segment 1 of the steel guide beam in the transverse direction, thereby improving the anti-torsion strength of the proximal end segment 1 of the steel guide beam.

[0086] In the present embodiment, the steel guide beam proximal segment reinforcement rib 10 is perpendicular to the web of the steel guide beam proximal segment 1, and the steel guide beam proximal segment reinforcement rib 10 is a plurality of pieces symmetrically distributed on both sides of the web of the steel guide beam proximal segment 1 in the transverse direction, and the plurality of steel guide beam proximal segment reinforcement ribs 10 are arranged at intervals along the longitudinal direction; this structure makes the structure parallel to the connecting truss, and can assist the connecting truss in improving the torsional strength of the steel guide beam.

[0087] In this embodiment, the rear end of the upper flange of the proximal segment 1 of the steel guide beam is extended backward to form a functional segment, and the functional segment includes a tapered transition segment with a size gradually increasing from front to rear and an extended segment extending horizontally backward from the rear end of the tapered transition segment; the connection area between the steel guide beam and the steel box beam is increased, the connection reliability of the steel guide beam on the steel box beam is improved, and a cantilever fulcrum with better rigidity is provided for the distal segment 3 of the steel guide beam;

[0088] The transverse middle part of the rear end of the extension section is recessed from back to front to form a functional recess 13. The projection of the functional recess 13 in the vertical direction is in the shape of a door arch, which reduces weight and improves torsional resistance.

[0089] In this embodiment, an auxiliary steel guide beam proximal segment web 14 is provided on the extended section at the rear end of the steel guide beam proximal segment 1, the auxiliary steel guide beam proximal segment web 14 is upwardly connected to the upper flange of the steel guide beam proximal segment 1, the auxiliary steel guide beam proximal segment web 14 is downwardly connected to the lower flange of the steel guide beam proximal segment 1, and the auxiliary steel guide beam proximal segment web 14 is parallel to the web of the steel guide beam proximal segment 1;

[0090] The auxiliary steel guide beam proximal segment web 14 is composed of two pieces symmetrically arranged in the transverse direction of the web of the steel guide beam proximal segment 1. The two pieces of the auxiliary steel guide beam proximal segment web 14 connect the steel guide beam proximal segment reinforcement ribs 10 on the corresponding sides in the transverse direction; the steel guide beam proximal segment reinforcement ribs 10 located between the auxiliary steel guide beam proximal segment web 14 and the steel guide beam proximal segment web are connected to form a whole, and the weight reduction holes 11 are opened on the steel guide beam proximal segment reinforcement ribs 10 connected to form a whole; the structural reliability of the connection end between the steel guide beam and the steel box beam is further improved, and the structure makes the force on the steel guide beam more uniform, providing a cantilever fulcrum with better rigidity for the far end segment 3 of the steel guide beam.

[0091] In this embodiment, the middle section 2 of the steel guide beam is an I-beam, which has a more reliable structure and is more convenient to process. The rear end of the upper flange of the middle section 2 of the steel guide beam is inclined downward from the back to the front to form a steel guide beam middle section weight reduction section, and the front end of the upper flange of the middle section 2 of the steel guide beam extends horizontally backward to smoothly transition and connect with the steel guide beam middle section weight reduction section; the smooth transition is to avoid the connection formed by direct bending, but to connect by smooth transition in the form of curved bending, so as to reduce the stress concentration at the transition position as much as possible and improve the structural reliability;

[0092] The lower flange of the middle section 2 of the steel guide beam is parallel to the horizontal plane.

[0093] In this embodiment, the web of the middle section 2 of the steel guide beam is connected with a steel guide beam middle section reinforcing rib, which can play a role in increasing the overall strength of the steel guide beam. The steel guide beam middle section reinforcing rib is upwardly connected to the upper flange of the middle section 2 of the steel guide beam, and the steel guide beam middle section reinforcing rib is downwardly connected to the lower flange of the middle section 2 of the steel guide beam, further making the use of the steel guide beam middle section reinforcing rib manifest, providing the steel guide beam with a structure with better rigidity;

[0094] The reinforcing rib of the middle section of the steel guide beam has an anti-torsion notch II which is recessed in the web of the middle section 2 of the steel guide beam in the transverse direction, thereby improving the anti-torsion strength of the middle section 2 of the steel guide beam.

[0095] In this embodiment, the reinforcing ribs of the middle section of the steel guide beam are perpendicular to the web of the middle section 2 of the steel guide beam. The reinforcing ribs of the middle section of the steel guide beam are a plurality of pieces symmetrically distributed on the transverse sides of the web of the middle section 2 of the steel guide beam. The plurality of reinforcing ribs of the middle section of the steel guide beam are arranged at intervals along the longitudinal direction; this structure makes the structure parallel to the connecting truss, and can assist the connecting truss in improving the torsional strength of the steel guide beam.

[0096] In this embodiment, the upper flange inclination angle of the weight reduction section of the proximal segment of the steel guide beam is consistent with the upper flange inclination angle of the weight reduction section of the middle segment of the steel guide beam, so that the connection between the proximal segment 1 of the steel guide beam and the middle segment 2 of the steel guide beam is more reliable, and the overall structure of the steel guide beam is more continuous, thereby improving the reliability of use; the front end height of the proximal segment 1 of the steel guide beam is consistent with the rear end height of the middle segment 2 of the steel guide beam, the upper flange width of the proximal segment 1 of the steel guide beam used to connect with the middle segment 2 of the steel guide beam is consistent with the upper flange width of the middle segment 2 of the steel guide beam used to connect with the proximal segment 1 of the steel guide beam, the lower flange width of the proximal segment 1 of the steel guide beam used to connect with the middle segment 2 of the steel guide beam is consistent with the lower flange width of the middle segment 2 of the steel guide beam used to connect with the proximal segment 1 of the steel guide beam, thereby further improving the joint reliability of the connection;

[0097] The front end of the upper flange of the proximal segment 1 of the steel guide beam and the rear end of the upper flange of the middle segment 2 of the steel guide beam are fixed by the rear end flange bolt group through the rear flange pad; the web of the proximal segment 1 of the steel guide beam and the web of the middle segment 2 of the steel guide beam are fixed by the rear end web bolt group through the rear web pad; the front end bottom surface of the lower flange of the proximal segment 1 of the steel guide beam and the rear end bottom surface of the lower flange of the middle segment 2 of the steel guide beam are welded and fixed at the same horizontal plane. This makes the connection between the proximal segment 1 of the steel guide beam and the middle segment 2 of the steel guide beam more reliable and firm, and improves the structural strength of the connection interface; the lower flange of the proximal segment 1 of the steel guide beam and the lower flange of the middle segment 2 of the steel guide beam are fixed by welding, the purpose of which is to consider the collision of the steel guide beam during the spanning process, provide a reliable and smooth spanning plane, and improve the reliability of the steel guide beam.

[0098] In this embodiment, the front end height of the middle section 2 of the steel guide beam is substantially equal to H2, which improves the overall force transmission reliability of the steel guide beam and satisfies the multi-purpose functions of the steel guide beam.

[0099] In this embodiment, the distal segment 3 of the steel guide beam is an I-beam, which has a more reliable structure and is more convenient to process. The rear end of the upper flange of the distal segment 3 of the steel guide beam is inclined downward from the back to the front to form a weight reduction section of the distal segment 3 of the steel guide beam. The front end of the upper flange of the distal segment 3 of the steel guide beam extends horizontally backward to smoothly transition and connect with the weight reduction section of the distal segment 3 of the guide beam; the smooth transition is to avoid the connection formed by direct bending, but to smoothly transition the connection in the form of curved bending, so as to reduce the stress concentration at the transition position as much as possible and improve the structural reliability;

[0100] The lower flange of the distal end segment 3 of the steel guide beam is parallel to the horizontal plane.

[0101] In this embodiment, the steel guide beam is in a stepped shape with the size decreasing from near to far in a sloped section, which meets the steel guide beam structure with the lowest mass at the far end. Combined with the specific segmented steel guide beam structure of this solution, it has a wider range of applications and stronger turnover under the premise of meeting the rigidity requirements. Compared with the current structure with an arch in the middle of the steel guide beam, this structure not only reduces the mass of the steel guide beam, but also can adapt to the double-type structure of steel box beams with different cross-sections and heights. Compared with the triangular steel guide beam structure with the same slope, it has the advantage of higher structural rigidity and is a structure that can adapt to the double-type steel box beams with different cross-sections and heights.

[0102] In this embodiment, a steel guide beam distal segment reinforcement rib is connected to the web of the steel guide beam distal segment 3, which can play a role in increasing the overall strength of the steel guide beam. The steel guide beam distal segment reinforcement rib is upwardly connected to the upper flange of the steel guide beam distal segment 3, and the steel guide beam distal segment reinforcement rib is downwardly connected to the lower flange of the steel guide beam distal segment 3, further embodying the use of the steel guide beam distal segment reinforcement rib, and providing the steel guide beam with a structure with better rigidity;

[0103] The reinforcement rib of the distal end segment of the steel guide beam has an anti-torsion notch III which is recessed in the web of the distal end segment 3 of the steel guide beam in the transverse direction, thereby improving the anti-torsion strength of the distal end segment 3 of the steel guide beam.

[0104] The structures of the anti-torsion recess Ⅰ12, the anti-torsion recess Ⅱ and the anti-torsion recess Ⅲ are roughly the same. This solution only shows the structure of the anti-torsion recess Ⅰ12 as an example and will not be repeated here.

[0105] In the present embodiment, the reinforcing ribs of the distal segment of the steel guide beam are perpendicular to the web of the distal segment 3 of the steel guide beam, and the reinforcing ribs of the distal segment of the steel guide beam are a plurality of pieces symmetrically distributed on both sides of the web of the distal segment 3 of the steel guide beam, and the plurality of reinforcing ribs of the distal segment of the steel guide beam are arranged at intervals along the longitudinal direction; this structure makes the structure parallel to the connecting truss, and can assist the connecting truss in improving the torsional strength of the steel guide beam.

[0106] In the present embodiment, the steel guide beam distal segment 3 also includes a steel guide beam distal segment 3 connecting section formed by a rear end horizontal extension of the weight-reducing section of the steel guide beam distal segment 3, and the steel guide beam distal segment 3 connecting section is used to be assembled and joined with the front end of the steel guide beam middle segment 2; the width of the steel guide beam distal segment 3 is smaller than the width of the steel guide beam middle segment 2, and the front end of the steel guide beam middle segment 2 is contracted forward to be consistent with the width of the steel guide beam distal segment 3 and then extends forward to form a steel guide beam middle segment 2 connecting section, and the steel guide beam middle segment 2 connecting section is used to be assembled and joined with the front end of the steel guide beam distal segment 3.

[0107] In this embodiment, the upper flange inclination angle of the weight reduction section of the distal segment 3 of the steel guide beam is greater than the upper flange inclination angle of the weight reduction section of the middle segment of the steel guide beam, so that the force at the connection between the distal segment 3 of the steel guide beam and the middle segment 2 of the steel guide beam is more reliable, thereby improving the reliability of the use of the steel guide beam. The rear end height of the distal segment 3 of the steel guide beam is consistent with the front end height of the middle segment 2 of the steel guide beam. The upper flange width of the distal segment 3 of the steel guide beam used to connect with the middle segment 2 of the steel guide beam is consistent with the upper flange width of the middle segment 2 of the steel guide beam used to connect with the distal segment 3 of the steel guide beam. The lower flange width of the distal segment 3 of the steel guide beam used to connect with the middle segment 2 of the steel guide beam is consistent with the lower flange width of the middle segment 2 of the steel guide beam used to connect with the distal segment 3 of the steel guide beam.

[0108] The front end of the upper flange of the middle section 2 of the steel guide beam and the rear end of the upper flange of the distal section 3 of the steel guide beam are fixed by the front end flange bolt group through the front flange pad; the web of the middle section 2 of the steel guide beam and the web of the distal section 3 of the steel guide beam are fixed by the front end web bolt group through the front web pad; the bottom surface of the front end of the lower flange of the middle section 2 of the steel guide beam and the bottom surface of the rear end of the lower flange of the distal section 3 of the steel guide beam are welded and fixed at the same horizontal plane. This makes the connection between the distal section 3 of the steel guide beam and the middle section 2 of the steel guide beam more reliable and firm, and improves the structural strength of the connection interface; the lower flange of the distal section 3 of the steel guide beam and the lower flange of the middle section 2 of the steel guide beam are fixed by welding, the purpose of which is to consider the collision of the steel guide beam during the spanning process, provide a reliable and smooth spanning plane, and improve the reliability of the steel guide beam.

[0109] The connection structure between the middle segment 2 of the steel guide beam and the proximal segment 1 of the steel guide beam is roughly the same as the connection structure between the middle segment 2 of the steel guide beam and the distal segment 3 of the steel guide beam. This scheme only shows the connection structure between the middle segment 2 of the steel guide beam and the proximal segment 1 of the steel guide beam as an example, which will not be repeated here.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A steel guide beam structure for steel box beam jacking construction, characterized in that: It comprises a steel guide main beam and a connecting truss, wherein the steel guide main beam comprises a steel guide beam distal segment, a steel guide beam intermediate segment and a steel guide beam proximal segment, and the steel guide beam intermediate segment connects the steel guide beam distal segment and the steel guide beam proximal segment; The steel guide main beam comprises at least two pieces arranged in parallel, the two pieces of the steel guide main beam are fixed to form a whole through a connecting truss, and the transverse projections of the two pieces of the steel guide main beam overlap; The bottom surface of the distal segment of the steel guide beam, the bottom surface of the middle segment of the steel guide beam and the bottom surface of the proximal segment of the steel guide beam are located in the same plane, and the bottom of the distal segment of the steel guide beam, the bottom of the middle segment of the steel guide beam and the bottom of the proximal segment of the steel guide beam are respectively provided with reinforcing ribs; The steel guide main beam includes a steel guide beam distal segment, a steel guide beam middle segment and a steel guide beam proximal segment, the steel guide beam middle segment connects the steel guide beam distal segment and the steel guide beam proximal segment; the steel guide beam proximal segment is used to connect to the steel box beam, one end of which has a connection end I with a preset height H1 and a connection end II with a preset height H2, and H1≠H2.

2. The steel guide beam structure for steel box beam jacking construction according to claim 1 is characterized in that: The distal bottom of the distal end section of the steel guide beam has a pier recess which is recessed upward from bottom to top, and the recessed surface of the pier recess is parallel to the bottom surface of the distal end section of the steel guide beam.

3. The steel guide beam structure for steel box beam jacking construction according to claim 1 is characterized in that: The proximal section of the steel guide beam is an I-beam, the front end of the upper flange of the proximal section of the steel guide beam is inclined upward from front to rear to form a weight reduction section of the proximal section of the steel guide beam, and the rear end of the upper flange of the proximal section of the steel guide beam extends horizontally forward to smoothly transition and connect with the weight reduction section of the proximal section of the steel guide beam; A connection end I with a preset height H1 is formed between the upper flange and the lower flange of the proximal end segment of the steel guide beam, and an intermediate flange plate is also connected between the upper flange and the lower flange of the proximal end segment of the steel guide beam. The intermediate flange plate is parallel to the upper flange of the proximal end segment of the steel guide beam, and a connection end II with a preset height H2 is formed between the intermediate flange plate and the lower flange of the proximal end segment of the steel guide beam.

4. The steel guide beam structure for steel box beam jacking construction according to claim 3 is characterized in that: A steel guide beam proximal segment reinforcement rib is connected to the web of the steel guide beam proximal segment, the steel guide beam proximal segment reinforcement rib is upwardly connected to the upper flange of the steel guide beam proximal segment, and the steel guide beam proximal segment reinforcement rib is downwardly connected to the lower flange of the steel guide beam proximal segment.

5. The steel guide beam structure for steel box beam jacking construction according to claim 3 is characterized in that: The middle section of the steel guide beam is an I-beam, the rear end of the upper flange of the middle section of the steel guide beam is inclined downward from the back to the front to form a steel guide beam middle section weight reduction section, and the front end of the upper flange of the middle section of the steel guide beam extends horizontally backward to smoothly transition and connect with the steel guide beam middle section weight reduction section; The front end of the proximal section of the steel guide beam is assembled and fixed with the rear end of the middle section of the steel guide beam.

6. The steel guide beam structure for steel box beam jacking construction according to claim 5, characterized in that: The upper flange inclination angle of the weight-reducing section of the proximal section of the steel guide beam is consistent with the upper flange inclination angle of the weight-reducing section of the middle section of the steel guide beam, and the front end height of the proximal section of the steel guide beam is consistent with the rear end height of the middle section of the steel guide beam; The front end of the upper flange of the proximal section of the steel guide beam and the rear end of the upper flange of the middle section of the steel guide beam are fixed by a rear end flange bolt group through a rear flange pad; the web of the proximal section of the steel guide beam and the web of the middle section of the steel guide beam are fixed by a rear end web bolt group through a rear web pad; the bottom surface of the front end of the lower flange of the proximal section of the steel guide beam and the bottom surface of the rear end of the lower flange of the middle section of the steel guide beam are welded and fixed in the same horizontal plane.

7. The steel guide beam structure for steel box beam jacking construction according to claim 5, characterized in that: The front end height of the middle section of the steel guide beam is roughly the same as H2.

8. The steel guide beam structure for steel box beam jacking construction according to claim 5, characterized in that: The distal segment of the steel guide beam is an I-beam, the rear end of the upper flange of the distal segment of the steel guide beam is inclined downward from the rear to the front to form a weight reduction section of the distal segment of the steel guide beam, and the front end of the upper flange of the distal segment of the steel guide beam extends horizontally backward to smoothly transition and connect with the weight reduction section of the distal segment of the guide beam; The front end of the middle section of the steel guide beam is assembled and fixed with the rear end of the distal section of the steel guide beam.

9. The steel guide beam structure for steel box beam jacking construction according to claim 8, characterized in that: The upper flange inclination angle of the weight-reducing section of the distal segment of the steel guide beam is greater than the upper flange inclination angle of the weight-reducing section of the middle segment of the steel guide beam, and the rear end height of the distal segment of the steel guide beam is consistent with the front end height of the middle segment of the steel guide beam; The steel guide beam distal segment also includes a steel guide beam distal segment connecting segment formed by horizontally extending rearward from the rear end of the steel guide beam distal segment weight reduction segment; The front end of the upper flange of the middle section of the steel guide beam and the rear end of the upper flange of the distal section of the steel guide beam are fixed by a front end flange bolt group through a front flange pad; the web of the middle section of the steel guide beam and the web of the distal section of the steel guide beam are fixed by a front end web bolt group through a front web pad; the bottom surface of the front end of the lower flange of the middle section of the steel guide beam and the bottom surface of the rear end of the lower flange of the distal section of the steel guide beam are welded and fixed in the same horizontal plane.

10. The steel guide beam structure for steel box beam jacking construction according to claim 9, characterized in that: The connecting truss includes a distal connecting truss, an intermediate connecting truss and a proximal connecting truss. The proximal connecting truss is connected to the connecting position of the proximal segment of the steel guide beam and the middle segment of the steel guide beam; the intermediate connecting truss is connected to the middle segment of the steel guide beam near the distal segment of the steel guide beam; the distal connecting truss is roughly connected to the middle of the extension direction of the distal segment of the steel guide beam.

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