CN220450682U - Temporary construction support based on new bridge tie beam - Google Patents

Abstract

The utility model relates to a temporary construction support based on a new bridge tie beam, which comprises a plurality of lower truss columns arranged in parallel, two pairs of lower reinforcing rib plates arranged at the top ends of the lower truss columns, connecting steel frames arranged on the two pairs of reinforcing rib plates, tie beam bodies arranged on the pairs of connecting steel frames, a plurality of upper truss columns respectively arranged above the tie beam bodies and arranged in one-to-one correspondence with the lower truss columns, two pairs of upper reinforcing rib plates arranged at the bottom ends of the upper truss columns, and a pair of arch sheet mounting frames arranged at the top ends of the lower truss columns. The upper truss column is supported by the tie beam body and the lower truss column together, so that the whole stress of the bracket is uniformly distributed, the supporting height of the bracket can be ensured, and the accurate construction of the truss arch sheet can be further ensured under the condition of taking the tie beam as a supporting reference, thereby achieving the purposes of sharing construction load and ensuring the installation precision of the truss arch sheet relative to the tie beam body.

Description

Temporary construction support based on new bridge tie beam

Technical Field

The utility model relates to the technical field of bridge engineering, in particular to a temporary construction support based on a new bridge tie beam.

Background

The truss arch bridge is an arch bridge which is formed by solid web sections in the middle and arch truss sheets at two sides. The truss arch sheets are connected into a whole by a bridge deck system and a transverse connection system. Is characterized in that the solid web section and the arched truss sheets at two sides play a role in arch stress, and the arch feet have horizontal thrust so as to reduce mid-span bending moment; compared with the common ribbed arch bridge with arch building, the bridge has reasonable stress, can save materials, reduce dead weight and is suitable for occasions with poor foundations. The truss arch sheet is installed by the following steps: with and without rack mounting. The former is suitable for the conditions of smaller bridge span, flatter river bed, shallower bridge water under installation and the like; the latter is applicable to bridges spanning deep water and valleys or multi-spans and large spans.

The bracket installation method needs to arrange a temporary construction bracket below the bridge hole, and the position of the bracket is determined according to the joint position of the truss arch sheet. The brackets at each location are typically double brackets to support adjacent ends of two joined members, respectively, and to perform casting of joint concrete or welding of joint steel plates, etc. thereon. When in installation construction, after conveying the first segment truss prefabricated member to the bridge hole, hoisting and installing the first segment truss prefabricated member in place by a floating crane or a gantry crane and the like, and temporarily fixing the truss segment by using a diagonal brace; hoisting and mounting other truss members at the side sections, and temporarily connecting the truss members with the front piece by using a transverse strut; installing a midspan solid web section; constructing joints of truss arch sheets in the longitudinal direction and transverse connection system components; and when the joint concrete meets the strength requirement, removing the construction temporary cross brace, and carrying out frame unloading operation.

The temporary construction support of the current bridge is mainly composed of a steel truss structure formed by erecting a Bailey beam and steel pipe combined structure, a main truss of the steel truss structure is mainly composed of a pull rod and a compression rod, the bending rigidity requirement on a rod piece interface is not large, and the steel truss structure can be prefabricated in a factory and directly hoisted on site. When in construction, because the bracket is directly arranged on a river bank or a pier in water, the force of the truss arch sheet is also transmitted to a foundation directly, and under the condition that the geological condition is not ideal, a small amount of uneven settlement can occur at the joint of the bottom of the bracket and the foundation, so that when the stress is uneven, the whole internal structure of the bracket generates additional stress such as shearing stress and hogging moment, the whole rigidity and stability of the bracket are reduced, even the risk of fracture at the joint of the structure occurs, the supporting height of the bracket is also reduced, and the accurate construction of the truss arch sheet is influenced, so that the improvement is needed.

Disclosure of Invention

The temporary construction support based on the new bridge tie beam aims at the defects in the prior art, and the purposes of sharing construction load and guaranteeing the installation accuracy of truss arch sheets relative to the tie beam body are achieved by jointly supporting the upper truss column through the tie beam body and the lower truss column.

The above object of the present utility model is achieved by the following technical solutions:

the utility model provides a temporary construction support based on new bridge tie beam, includes a plurality of lower truss posts that arrange side by side, set up in two pairs of lower reinforcement rib plates on lower truss post top, set up the connection steelframe on these two pairs of reinforcement rib plates, set up the tie beam body on these pairs of connection steelframe, a plurality of arrange respectively in tie beam body top and with lower truss post one-to-one arranges go up truss post, set up in two pairs of last reinforcement rib plates of last truss post bottom and set up in a pair of arch sheet mounting bracket on lower truss post top, two pairs of last reinforcement rib plates on the same last truss post set up respectively in on connection steelframe and the tie beam body, the length direction of arch sheet mounting bracket with the length direction of tie beam body is perpendicular.

Through adopting above-mentioned technical scheme, in actual construction process, lower truss column's structure height is designed according to the fall between ground and the tie beam body, lower truss column supports through lower reinforcement rib plate and connection steelframe and tie beam body and is connected, go up truss column's structure height and be connected the installation through last reinforcement rib plate and connection steelframe and tie beam body, and carry out the location installation through the hunch piece mounting bracket to truss arch piece, at this moment, go up truss column and can receive the construction load of installation truss arch piece transmission, these power partly pass through the tie beam evenly on other component of new bridge and the lower truss column, partly pass through on the lower truss column transmits the foundation, from this can reduce the single point atress to the foundation between, make the holistic atress of support distribute evenly, can effectively avoid under the condition that the support bottom and the junction of foundation probably appear a small amount of uneven settlement, and then can avoid the support to produce stress deformation, and guarantee the support height of support, and based on the girder of support, the girder is as the girder of support, the girder can be more accurate truss arch piece is installed to the relative purpose of girder, the relative girder of girder is guaranteed.

The utility model is further provided with: the lower truss column comprises four first vertical steel pipes which are arranged in a arraying mode, a plurality of first transverse channel steel which are arranged between two adjacent first vertical steel pipes in parallel, and a pair of first cross channel steel which are arranged between two adjacent first transverse channel steel in a cross mode, and the lower reinforcing rib plates are arranged at the top ends of the first vertical steel pipes.

By adopting the technical scheme, the truss arch sheet has better supporting strength and can meet the construction load of the truss arch sheet.

The utility model is further provided with: the lower reinforcement rib plate comprises a first base plate, a first sleeve arranged on the first base plate and a plurality of first reinforcement ribs arranged between the bottom surface of the first base plate and the peripheral wall of the first sleeve, and the first vertical steel pipe is inserted and fixed on the first sleeve.

Through adopting above-mentioned technical scheme, when being convenient for the installation of first vertical steel pipe, can improve the joint strength between truss column and the tie beam body down.

The utility model is further provided with: the connecting steel frame comprises two connecting double-spliced I-beams respectively arranged on the two pairs of first base plates, a plurality of reinforcing rib plates arranged on the connecting double-spliced I-beams, and connecting I-beams arranged between the reinforcing rib plates on the inner sides of the two connecting double-spliced I-beams, wherein the tie beam body and the upper reinforcing rib plates are arranged on the two connecting double-spliced I-beams.

By adopting the technical scheme, the girder and the upper truss column are provided with good supporting strength.

The utility model is further provided with: the upper truss column comprises four second vertical steel pipes which are arranged in a arraying mode, a plurality of second transverse channel steel which are arranged between two adjacent second vertical steel pipes in parallel, and a pair of second cross channel steel which are arranged between two adjacent second transverse channel steel in a cross mode, and the lower reinforcing rib plates are arranged at the top ends of the second vertical steel pipes.

By adopting the technical scheme, the truss arch sheet has better supporting strength and can meet the construction load of the truss arch sheet.

The utility model is further provided with: the upper reinforcement rib plate comprises a second base plate, a second sleeve arranged on the second base plate and a plurality of second reinforcement ribs arranged between the top surface of the second base plate and the peripheral wall of the second sleeve, the second base plate is arranged on the connecting steel frame or the tie beam body, and the second vertical steel pipe is inserted and fixed on the second sleeve.

Through adopting above-mentioned technical scheme, when being convenient for the installation of the vertical steel pipe of second, can improve the joint strength between truss column and the tie beam body.

The utility model is further provided with: the arch sheet mounting frame is a pair of transverse double-spliced I-steel arranged on the pair of second vertical steel pipes.

By adopting the technical scheme, the truss arch sheet is convenient to position and install.

The utility model is further provided with: a plurality of reinforcing partition plates are uniformly arranged in the tie beam body along the circumferential direction.

By adopting the technical scheme, the tie beam body can be uniformly stressed.

In summary, the beneficial technical effects of the utility model are as follows: the truss column is supported together through the tie beam body and the lower truss column, so that the overall stress distribution of the support is uniform, the condition that a small amount of uneven settlement can occur at the joint of the bottom of the support and the foundation under the condition of non-ideal geological conditions can be effectively avoided, the support can be further prevented from generating stress deformation, the support height of the support is ensured, and the accurate construction of truss arch sheets can be further ensured under the condition that the tie beam is used as a support reference, and the purposes of sharing construction load and ensuring the installation precision of the truss arch sheets relative to the tie beam body are achieved.

Drawings

Fig. 1 is a schematic structural view of a temporary construction support according to the present utility model.

Fig. 2 is a schematic view of a partial structure of the temporary construction support of the present utility model in a front view direction.

Fig. 3 is a schematic view of a partial structure of the temporary construction support of the present utility model in a right-hand direction.

Fig. 4 is a partial schematic structural view of the temporary construction support of the present utility model in a top view.

Fig. 5 is a schematic view showing the connection relationship between the tie beam body and the upper reinforcing rib plate of the present utility model.

Fig. 6 is an overall stress profile of the tie beam body of the present utility model.

Fig. 7 is a partial stress distribution diagram of the tie beam body of the present utility model.

In the figure, 1, a lower truss column; 11. a first vertical steel pipe; 12. a first transverse channel steel; 13. a first cross channel; 2. a lower reinforcing rib plate; 21. a first backing plate; 22. a first sleeve; 23. a first reinforcing rib; 3. connecting a steel frame; 31. connecting double-spliced I-steel; 32. reinforcing rib plates; 33. connecting I-steel; 4. a tie beam body; 41. reinforcing the partition; 5. a truss column is arranged on the upper truss column; 51. a second vertical steel pipe; 52. a second transverse channel steel; 53. a second cross channel; 6. an upper reinforcing rib plate; 61. a second backing plate; 62. a second sleeve; 63. a second reinforcing rib; 7. arch sheet mounting rack; 8. truss arch sheets.

Description of the embodiments

The utility model will be further described with reference to the drawings and detailed description in order to make the technical means, the creation characteristics, the achievement of the objects and the functions of the utility model more clear and easy to understand.

Referring to fig. 1 and 2, a temporary construction bracket based on a new bridge tie beam according to the present utility model includes four lower truss columns 1 arranged in parallel, two pairs of lower reinforcement ribs 2 provided at the top ends of the lower truss columns 1, connection steel frames 3 provided on the two pairs of reinforcement ribs of the same lower truss column 1, tie beam bodies 4 provided on the pairs of connection steel frames 3, four upper truss columns 5 respectively arranged above the tie beam bodies 4 and arranged in one-to-one correspondence with the lower truss columns 1, two pairs of upper reinforcement ribs 6 provided at the bottom ends of the upper truss columns 5, and a pair of arch sheet mounting frames 7 provided at the top ends of the lower truss columns 1. Wherein, two pairs of upper reinforcing rib plates 6 on the same upper truss column 5 are respectively arranged on the connecting steel frame 3 and the tie beam body 4, and the length direction of the arch sheet mounting frame 7 is perpendicular to the length direction of the tie beam body 4.

Referring to fig. 2 and 3, in order to make the overall stress distribution of the bracket uniform and satisfy the new bridge construction load, the present embodiment further designs the structures of the tie beam body 4, the lower truss column 1 and the upper truss column 5. Wherein, the tie beam body 4 is internally provided with a plurality of reinforcing partition plates 41 which are uniformly arranged along the circumferential direction, so that the tie beam body 4 can be uniformly stressed. The lower truss column 1 includes four first vertical steel pipes 11 arranged in a row, a plurality of first transverse channel steels 12 arranged between two adjacent first vertical steel pipes 11 in parallel, and a pair of first cross channel steels 13 arranged between two adjacent first transverse channel steels 12 in a cross arrangement, and the lower reinforcing rib plate 2 is arranged at the top end of the first vertical steel pipes 11. The upper truss column 5 includes four second vertical steel pipes 51 arranged in a row, a plurality of second transverse channel steels 52 arranged in parallel between two adjacent second vertical steel pipes 51, and a pair of second cross channel steels 53 arranged between two adjacent second transverse channel steels 52 and arranged in a cross manner, and the lower reinforcing rib plates 2 are arranged at the top ends of the second vertical steel pipes 51.

Referring to fig. 4 and 5, in order to strengthen the connection strength between the tie beam body 4, the lower truss column 1 and the upper truss column 5, the present embodiment further designs the structures of the lower reinforcing rib 2, the connection steel frame 3 and the upper reinforcing rib 6. The lower reinforcement rib plate 2 comprises a first base plate 21, a first sleeve 22 arranged on the first base plate 21, and a plurality of first reinforcement ribs 23 arranged between the bottom surface of the first base plate 21 and the peripheral wall of the first sleeve 22, and the first vertical steel pipe 11 is inserted and fixed on the first sleeve 22. The connecting steel frame 3 comprises two connecting double-spliced I-beams 31 respectively arranged on the two pairs of first base plates 21, a plurality of reinforcing rib plates 32 arranged on the connecting double-spliced I-beams 31, and connecting I-beams 33 arranged between the reinforcing rib plates 32 on the inner sides of the two connecting double-spliced I-beams 31, wherein the tie beam body 4 and the upper reinforcing rib plates 6 are arranged on the two connecting double-spliced I-beams 31. The upper reinforcement rib plate 6 comprises a second base plate 61, a second sleeve 62 arranged on the second base plate 61, and a plurality of second reinforcement ribs 63 arranged between the top surface of the second base plate 61 and the peripheral wall of the second sleeve 62, wherein the second base plate 61 is arranged on the connecting steel frame 3 or the tie beam body 4, and the second vertical steel pipe 51 is inserted and fixed on the second sleeve 62.

Referring to fig. 1, in addition, the arch sheet mounting frame 7 is a transverse double-spliced i-steel arranged on a pair of second vertical steel pipes 51, so that the truss arch sheet 8 can be positioned and mounted conveniently.

Referring to fig. 6 and 7, in the actual construction process, the structure height of the lower truss column 1 is designed according to the drop between the foundation and the tie beam body 4, the lower truss column 1 is supported and connected with the tie beam body 4 through the lower reinforcement rib plate 2 and the connection steel frame 3, the structure height of the upper truss column 5 is set according to the drop between the truss arch sheet 8 and the tie beam body 4, the upper truss column 5 is connected and installed with the connection steel frame 3 and the tie beam body 4 through the upper reinforcement rib plate 6, and the truss arch sheet 8 is positioned and installed through the arch sheet installation frame 7, at this time, the upper truss column 5 is subjected to construction loads transmitted by installing the truss arch sheet 8, a part of the forces are uniformly transmitted to other members of a new bridge and the lower truss column 1 through the tie beam, a part of the forces are transmitted to the foundation through the lower truss column 1, so that single-point forces to the foundation can be reduced, the overall stress distribution of the bracket can be uniform, the situation that non-uniform settlement can occur at the connection of the bracket bottom and the foundation under the condition of non-ideal geological condition can be effectively avoided, and the support frame bottom and the foundation can be further guaranteed to be used for accurately installing the truss arch support frame 8, and the tie beam can be further guaranteed to be installed based on the truss support frame body, and the truss frame 8 can be accurately and the support frame can be used as the support frame.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (8)

1. A temporary construction support based on new bridge tie beam, its characterized in that: the truss comprises a plurality of lower truss columns (1) which are arranged in parallel, two pairs of lower reinforcing rib plates (2) which are arranged at the top ends of the lower truss columns (1), a connecting steel frame (3) which is arranged on the two pairs of reinforcing rib plates, a tie beam body (4) which is arranged on the connecting steel frames (3), a plurality of upper truss columns (5) which are respectively arranged above the tie beam body (4) and are arranged in one-to-one correspondence with the lower truss columns (1), two pairs of upper reinforcing rib plates (6) which are arranged at the bottom ends of the upper truss columns (5), and a pair of arch sheet mounting frames (7) which are arranged at the top ends of the lower truss columns (1), wherein the two pairs of upper reinforcing rib plates (6) on the same upper truss column (5) are respectively arranged on the connecting steel frame (3) and the tie beam body (4), and the length direction of the arch sheet mounting frames (7) are perpendicular to the length direction of the tie beam body (4).

2. The temporary construction support based on new bridge tie beam according to claim 1, wherein: the lower truss column (1) comprises four first vertical steel pipes (11) which are arranged in a arraying mode, a plurality of first transverse channel steels (12) which are arranged between two adjacent first vertical steel pipes (11) in parallel, and a pair of first cross channel steels (13) which are arranged between two adjacent first transverse channel steels (12) in a cross mode, wherein the lower reinforcing rib plates (2) are arranged at the top ends of the first vertical steel pipes (11).

3. A temporary construction support based on new bridge tie according to claim 2, characterized in that: the lower reinforcement rib plate (2) comprises a first base plate (21), a first sleeve (22) arranged on the first base plate (21) and a plurality of first reinforcement ribs (23) arranged between the bottom surface of the first base plate (21) and the peripheral wall of the first sleeve (22), and the first vertical steel pipe (11) is inserted and fixed on the first sleeve (22).

4. A temporary construction support based on new bridge tie according to claim 3, characterized in that: the connecting steel frame (3) comprises two connecting double-spliced I-beams (31) which are respectively arranged on the two pairs of first base plates (21), a plurality of reinforcing rib plates (32) which are arranged on the connecting double-spliced I-beams (31) and connecting I-beams (33) which are arranged between the reinforcing rib plates (32) which are arranged on the inner sides of the two connecting double-spliced I-beams (31), and the tie beam body (4) and the upper reinforcing rib plates (6) are arranged on the two connecting double-spliced I-beams (31).

5. The temporary construction support based on new bridge tie beam according to claim 1, wherein: the upper truss column (5) comprises four second vertical steel pipes (51) which are arranged in a arraying mode, a plurality of second transverse channel steels (52) which are arranged between two adjacent second vertical steel pipes (51) in parallel, and a pair of second cross channel steels (53) which are arranged between two adjacent second transverse channel steels (52) in a cross mode, wherein the lower reinforcing rib plates (2) are arranged at the top ends of the second vertical steel pipes (51).

6. The temporary construction support based on new bridge tie beam according to claim 5, wherein: the upper reinforcement rib plate (6) comprises a second base plate (61), a second sleeve (62) arranged on the second base plate (61) and a plurality of second reinforcement ribs (63) arranged between the top surface of the second base plate (61) and the peripheral wall of the second sleeve (62), the second base plate (61) is arranged on the connecting steel frame (3) or the tie beam body (4), and the second vertical steel pipe (51) is fixedly connected to the second sleeve (62) in an inserting mode.

7. The temporary construction support based on new bridge tie beam according to claim 5, wherein: the arch sheet mounting frame (7) is a pair of transverse double-spliced I-steel arranged on the pair of second vertical steel pipes (51).

8. The temporary construction support based on new bridge tie beam according to claim 1, wherein: a plurality of reinforcing partition plates (41) which are uniformly arranged along the circumferential direction are arranged in the tie beam body (4).