CN216360641U

CN216360641U - Ultra-large-span solid steel box girder structure

Info

Publication number: CN216360641U
Application number: CN202121808901.5U
Authority: CN
Inventors: 崔伯臻; 张文辉
Original assignee: Zhuhai Huafa City Research Institute Co ltd
Current assignee: Zhuhai Huafa City Research Institute Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-04-22
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses an ultra-large span solid steel box girder structure which mainly comprises two stand columns, wherein steel corbels are arranged on one side of the outer surfaces of the two stand columns, supports are arranged on the top surfaces of the two steel corbels, a box girder body is arranged between the two stand columns, the box girder body is positioned on the top surfaces of the supports, and supporting steel girders are arranged on two sides of the outer surface of the box girder body. The utility model has the advantages that: the whole structure is divided into four parts, namely a steel bracket, a support, a box girder body and a supporting steel girder, wherein the steel brackets at two ends are connected with the column, the bottom of the support is welded on the steel bracket, the box girder body is welded with the top surface of the support, and the supporting steel girder is welded with the box girder body; wherein, the steel corbel and the steel rib embedded in the column are welded into a whole; the support is as a connection media of box girder body and steel corbel, through the articulated structure of disk support self, can realize moment of flexure release and the effect of power consumption to a certain extent to the characteristic of rotation deformation.

Description

Ultra-large-span solid steel box girder structure

Technical Field

The utility model relates to the technical field of box girder structures, in particular to a super-large span solid steel box girder structure.

Background

In recent years, domestic super-large-span public construction projects are more and more, such as airports, exhibition halls, gymnasiums and the like, the traditional scheme of the super-large-span structure generally adopts a structural scheme of a steel truss or a net rack, the truss scheme is usually higher in truss section, and the limitation on the net height of indoor space is larger; the net rack is often limited to be used for a roof structure and is only used for a light curtain wall roof, and the net rack is not suitable for a large-span concrete roof or a large-span floor which is an area with large bearing load.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a super-large-span solid steel box girder structure which has the advantages of effectively reducing the height of a cross section, increasing the indoor clear height below, bearing the load of a floor in normal use, meeting the comfort level and the like, and solves the problems of high cross section and large limit on the indoor clear height.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a real abdomen steel box girder structure of super large span, includes two stands, two one side of stand surface all is provided with the steel corbel, two the top surface of steel corbel all is provided with the support, two be provided with the case roof beam body between the stand, the case roof beam body is located the top surface of support, the both sides of case roof beam body surface all are provided with the support girder steel.

Preferably, two the inside of stand all is provided with the reinforcing bar, two the steel bracket respectively with two the inside reinforcing bar welding of stand, two the steel bracket respectively with two the reinforcing bar is mutually perpendicular, two the steel bracket is equallyd divide and is do not run through two the outside of stand, wherein, the level is placed to the position vertically steel bracket can guarantee the case roof beam body for the structure of case roof beam body satisfies the requirement of actual processing.

Preferably, a plurality of stiffening keel of inside fixedly connected with of case roof beam body, it is a plurality of stiffening keel is located respectively the connection and the corner structure department of case roof beam body are a plurality of stiffening keel all through the welded mode with case roof beam body fixed connection, it is a plurality of the shape of stiffening keel cross section is the U-shaped, and the setting of stiffening keel has promoted the structural strength of case roof beam body to a certain extent, avoids in the use, the unexpected condition appears.

Preferably, the case roof beam body still is provided with a plurality of floors, the cross-sectional area of case roof beam body is steadilyd decrease in proper order to both sides by the middle part, the inside of case roof beam body intermediate position is formed with two cavities, and the equal fixedly connected with floor of the inside corner of two cavities, the inside of case roof beam body intermediate position deviation to one side forms a cavity, just the inside of cavity is provided with the floor, the inside that the case roof beam body is close to outer end one side is formed with two cavities, the inside at case roof beam body both ends is formed with a cavity.

Preferably, the bottom surfaces of the two supports are welded with the top surface of the steel corbel, the top surfaces of the two supports are welded with the bottom surfaces of the two ends of the box girder body, each of the two supports consists of the base, the top seat and an intermediate body, the intermediate body is located between the base and the top seat, the cross section of the intermediate body is in an arch shape, the supports serve as a connecting medium of the box girder body and the steel corbel, the effects of bending moment release and energy consumption are achieved through the characteristic of rotary deformation of the disc supports in a certain degree, the two ends of the box girder body form the hinged supports, the stress mode of the support nodes is simplified, and the force transmission path is clear.

Preferably, support the girder steel with the welding of case roof beam body, support the girder steel with a plurality of reinforcing plates of fixedly connected with between the case roof beam body, it is a plurality of the reinforcing plate all with support girder steel and welding of case roof beam body, it is a plurality of reinforcing plate evenly distributed is between the two.

Preferably, the cross-sectional shapes of the two steel ribs are trapezoidal in the middle and rectangular on two sides, and the steel corbels are welded in the trapezoidal mode in the middle of the two upright columns.

Compared with the prior art, the utility model provides a super-large span solid steel box girder structure, which has the following beneficial effects:

the ultra-large span solid steel box girder structure is characterized in that the whole structure is divided into four parts, namely a steel corbel, a support, a box girder body and a supporting steel girder, the steel corbels at two ends are connected with a column, the bottom of the support is welded on the steel corbel, the box girder body is welded with the top surface of the support, and the supporting steel girder is welded with the box girder body; wherein, the steel corbel and the steel rib embedded in the column are welded into a whole; the support is used as a connecting medium of the box girder body and the steel corbel, the functions of bending moment release and energy consumption can be realized by the characteristic of rotary deformation to a certain extent through the hinged structure of the disc support, so that the hinged supports are formed at the two ends of the box girder body, the stress mode of the support node is simplified, and the force transmission path is clear; the supporting steel beam is welded with the box girder body so as to ensure the integral stability of the long-span steel box girder; in addition, the size of box girder body is thicker, simultaneously, in order to strengthen web stability, has arranged stiffening keel in box girder inside, guarantees the stability of box self under stress.

Drawings

FIG. 1 is a schematic view of an overall cross-sectional structure of a super-span solid steel box girder structure according to the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line C-C of FIG. 1;

FIG. 5 is a schematic cross-sectional view taken along line D-D of FIG. 1;

FIG. 6 is a schematic top view of the box girder body according to the present invention;

FIG. 7 is an enlarged view of a portion of the structure of FIG. 6 at A;

FIG. 8 is a schematic view of a portion of the enlarged structure at B in FIG. 6;

FIG. 9 is a schematic view of the overall longitudinal cross-section of the present invention;

FIG. 10 is a schematic cross-sectional view taken along line A-A of FIG. 9;

FIG. 11 is a schematic cross-sectional view taken along line B-B of FIG. 9;

FIG. 12 is a schematic cross-sectional view taken along line C-C of FIG. 9;

FIG. 13 is a schematic cross-sectional view taken along line D-D of FIG. 9;

FIG. 14 is a schematic cross-sectional view taken along line E-E of FIG. 9;

FIG. 15 is a schematic cross-sectional view taken along line F-F of FIG. 9;

FIG. 16 is a schematic cross-sectional view taken along line G-G of FIG. 11;

fig. 17 is a sectional structural view of the stand according to the present invention.

In the figure: 1-upright column, 2-steel rib, 3-support, 4-box girder body, 5-stiffening keel, 6-steel corbel and 7-supporting steel girder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-17, a super-large span solid steel box girder structure comprises two vertical columns 1, steel corbels 6 are arranged on one side of the outer surfaces of the two vertical columns 1, supports 3 are arranged on the top surfaces of the two steel corbels 6, a box girder body 4 is arranged between the two vertical columns 1, the box girder body 4 is located on the top surfaces of the supports 3, and supporting steel beams 7 are arranged on two sides of the outer surface of the box girder body 4.

As an optional technical scheme of the utility model:

two stand 1's inside all is provided with reinforcing bar 2, two steel brackets 6 respectively with the inside reinforcing bar 2 welding of two stand 1, two steel brackets 6 are perpendicular with two reinforcing bar 2 respectively, two steel brackets 6 are equallyd divide and are do not run through two stand 1's outside, when welding steel bracket 6, guarantee that its position welding is firm, and, in welding process, need use corresponding instrument to calibrate the levelness of steel bracket 6, in order to guarantee its rational in infrastructure, satisfy the needs of in-service use, and simultaneously, it is suitable to guarantee that the material of steel bracket 6 selects, make its working strength enough, avoid the play of unexpected condition.

As an optional technical scheme of the utility model:

a plurality of stiffening keel 5 of inside fixedly connected with of case roof beam body 4, a plurality of stiffening keel 5 are located the connection and the corner structure department of case roof beam body 4 respectively, a plurality of stiffening keel 5 are all through welded mode and 4 fixed connection of case roof beam body, the shape of a plurality of stiffening keel 5 cross sections is the U-shaped, wherein, to stiffening keel 5's shape and size, relevant technical staff is when welding it, select according to actual conditions, in order to guarantee firm in connection between it can and the adjacent spare part, and simultaneously, guarantee the weldability of stiffening keel 5 material, intensity, rigidity and toughness are suitable, convenient to use personnel fix the welding to it, and, stiffening keel 5 places at the relatively poor position of case roof beam structural strength or the cracked position easily appears, in order to strengthen overall structure's working strength.

As an optional technical scheme of the utility model:

box girder body 4 still is provided with a plurality of floors, box girder body 4's cross-sectional area is decremented gradually to both sides by the middle part, the inside of box girder body 4 intermediate position is formed with two cavities, and the equal fixedly connected with floor of the inside corner of two cavities, box girder body 4 intermediate position is partial to inside one side and is formed a cavity, and the inside of cavity is provided with the floor, box girder body 4 is close to the inside of outer end one side and is formed with two cavities, and the inside of cavity does not set up the floor, the inside at box girder body 4 both ends is formed with a cavity, and the inside of cavity does not set up the floor, because the weight that the intermediate position bore bears is great, consequently need to guarantee the fastness and the intensity of its box girder's structure enough, in addition box girder body's cross-section reaches 2100mmx3800mm, the flange is thick 50mm, the thickness of web is 16mm, it is enough to have guaranteed that its service strength is enough.

As an optional technical scheme of the utility model:

the bottom surface of two supports 3 and the top surface welding of steel bracket 6, the top surface of two supports 3 and the bottom surface welding at 4 both ends of case roof beam body, two supports 3 are by base 301, footstock 302 and midbody 303 are constituteed, midbody 303 is located between base 301 and the footstock 302, the shape of midbody 303 cross section is bow-shaped, wherein, adopt welded form between support 3 and other parts, make the part form a whole, avoid using the condition that the bolt fastening appears rocking, the fastness of being connected between assurance support 3 and other parts is stronger, and simultaneously, in the use, can also play the effect of vibration between the cushioning component, and simultaneously, when installing support 3, guarantee that the levelness of case roof beam body 4 is better, avoid appearing the condition of slope.

As an optional technical scheme of the utility model:

support girder steel 7 and the welding of case roof beam body 4, support a plurality of reinforcing plates of fixedly connected with between girder steel 7 and the case roof beam body 4, a plurality of reinforcing plates all with support girder steel 7 and the welding of case roof beam body 4, a plurality of reinforcing plate evenly distributed are between the two, support girder steel 7 and the welding of case roof beam body 4 in order to guarantee the overall stability of striding steel case roof beam greatly, and simultaneously, the user of service can support welding position and inclination between girder steel 7 and the case roof beam body 4 according to the adjustment of the in-service use condition, make and form stable structure between the two.

As an optional technical scheme of the utility model:

the cross-sectional shapes of the two steel ribs 2 are respectively trapezoidal in the middle and rectangular on two sides, and the steel corbels 6 are welded on the middle of the two upright posts 1 in a trapezoidal mode.

When the steel skeleton assembling and forming device is used, the steel skeleton 2 is assembled and formed, plates or other articles are arranged outside the steel skeleton 2, the steel skeleton and the steel skeleton are enclosed to form a corresponding structure, meanwhile, the steel bracket 6 and the steel skeleton 2 are welded and formed, the levelness of the steel bracket 6 is verified, and concrete is poured into a mold to form a stand column; the external structure of the steel corbel 6 is trimmed so as to be convenient for welding with the support 3, and meanwhile, the overall levelness of the steel corbel 6 is checked and corrected; and placing the welded box girder body 4 on the supports 3 at two sides, detecting and correcting a series of parameters such as levelness and the like, and welding the box girder body 4 and the supports 3 into a whole.

In conclusion, the ultra-large span solid steel box girder structure is divided into four parts, namely the steel corbels 6, the supports 3, the box girder body 4 and the supporting steel girder 7, the steel corbels 6 at two ends are connected with the columns, the welding of the steel corbels 6 is ensured to be firm, in addition, in the welding process, corresponding instruments are needed to be used for calibrating the levelness of the steel corbels 6 so as to ensure the reasonable structure and meet the actual use requirement, meanwhile, the proper material selection of the steel corbels 6 is ensured, the use strength is enough, the accidental situations are avoided, the bottom of the supports 3 is welded on the steel corbels 6, the box girder body 4 is welded with the top surface of the supports 3, wherein the supports 3 and other components are welded, the components form a whole, the shaking situation caused by the use of bolt fixing is avoided, the connection firmness between the supports 3 and other components is ensured to be strong, meanwhile, in the use process, the vibration between the parts can be buffered, and meanwhile, when the support 3 is installed, the box girder body 4 is ensured to have better levelness, the inclination is avoided, and the support steel girder 7 is welded with the box girder body 4; wherein, the steel bracket 6 and the steel skeleton 2 embedded in the column are welded into a whole; the support 3 is used as a connecting medium of the box girder body 4 and the steel corbel 6, and the functions of bending moment release and energy consumption can be realized by the characteristic of rotary deformation to a certain extent through the hinged structure of the disc type support 3, so that the two ends of the box girder body 4 form hinged supports, the stress mode of the support node is simplified, and the force transmission path is clear; the supporting steel beam 7 is welded with the box girder body 4 to ensure the integral stability of the long-span steel box girder; in addition, the size of box girder body 4 is thicker, simultaneously, in order to strengthen web stability, stiffening keel 5 has been arranged at box girder inside, guarantee the stability of box self under the stress state, wherein, to stiffening keel 5's shape and size, relevant technical staff is when welding it, select according to actual conditions, in order to guarantee that it can and adjacent spare part between firm in connection, simultaneously, guarantee the weldability of stiffening keel 5 material, intensity, rigidity and toughness are suitable, convenient to use personnel fix the welding to it, and, stiffening keel 5 places at the position that box girder structural strength is relatively poor or cracked position easily appears for a long time, in order to strengthen whole structural use intensity.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a super large span solid web steel box girder structure, its characterized in that, includes two stands (1), two one side of stand (1) surface all is provided with steel corbel (6), two the top surface of steel corbel (6) all is provided with support (3), two be provided with case roof beam body (4) between stand (1), case roof beam body (4) are located the top surface of support (3), the both sides of case roof beam body (4) surface all are provided with support girder steel (7).

2. The ultra-large span solid steel box girder structure of claim 1, wherein: two the inside of stand (1) all is provided with reinforcing bar (2), two steel bracket (6) respectively with two the inside reinforcing bar (2) welding of stand (1), two steel bracket (6) respectively with two reinforcing bar (2) are mutually perpendicular, two steel bracket (6) are equallyd divide and are do not run through two the outside of stand (1).

3. The ultra-large span solid steel box girder structure of claim 1, wherein: the inside fixedly connected with of case roof beam body (4) a plurality of stiffening keel (5), it is a plurality of stiffening keel (5) are located respectively the connection and the corner structure department of case roof beam body (4) are a plurality of stiffening keel (5) all through the welded mode with case roof beam body (4) fixed connection, it is a plurality of the shape of stiffening keel (5) cross section is the U-shaped.

4. The ultra-large span solid steel box girder structure of claim 1, wherein: the box girder comprises a box girder body (4), and is characterized in that a plurality of rib plates are further arranged on the box girder body (4), the cross sectional area of the box girder body (4) is gradually decreased from the middle to two sides, two cavities are formed in the middle of the box girder body (4), rib plates are fixedly connected to the corners of the two cavities, the middle of the box girder body (4) is deviated to one side of the cavity, the rib plates are arranged in the cavity, two cavities are formed in the inner part of the box girder body (4) close to one side of the outer end, and a cavity is formed in the inner parts of the two ends of the box girder body (4).

5. The ultra-large span solid steel box girder structure of claim 1, wherein: two the bottom surface of support (3) with the top surface welding of steel bracket (6), two the top surface of support (3) with the bottom surface welding at case roof beam body (4) both ends, two support (3) by base (301), footstock (302) and midbody (303) are constituteed, midbody (303) are located between base (301) and footstock (302), the shape of midbody (303) cross section is bow-shaped.

6. The ultra-large span solid steel box girder structure of claim 1, wherein: support girder steel (7) with case roof beam body (4) welding, support girder steel (7) with a plurality of reinforcing plates of fixedly connected with between case roof beam body (4), it is a plurality of the reinforcing plate all with support girder steel (7) and case roof beam body (4) welding, it is a plurality of the reinforcing plate evenly distributed is between the two.

7. The ultra-large span solid steel box girder structure of claim 1, wherein: the section shapes of the two steel ribs (2) are respectively trapezoidal in the middle and rectangular on two sides, and the steel corbels (6) are welded in the trapezoidal mode in the middle of the stand columns (1).