CN212505801U - Steel box girder structure - Google Patents
Steel box girder structure Download PDFInfo
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- CN212505801U CN212505801U CN202020459068.7U CN202020459068U CN212505801U CN 212505801 U CN212505801 U CN 212505801U CN 202020459068 U CN202020459068 U CN 202020459068U CN 212505801 U CN212505801 U CN 212505801U
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Abstract
The utility model relates to a steel box girder technical field especially relates to steel box girder construction, including steel box girder subassembly and vertical reinforcement subassembly, the steel box girder subassembly includes decking and U rib, and the open end of U rib is connected with the bottom surface of decking and is formed the cross section and be cyclic annular closed structure, and vertical reinforcement subassembly is pasted on decking and U rib to cover the welding seam that decking and U rib are connected. Under the condition that the limited conditions of steel box girder maintenance development in the prior art are more, the longitudinal reinforcing component is adhered to the fatigue cracking position of the steel box girder, other feasible schemes are provided besides welding and bolting, the effects of structural reinforcement are achieved, the bearing capacity is improved, the crack development is limited, and the maintenance effects of sustainable maintenance, nondestructive maintenance and reduction of influence on traffic passage as far as possible are achieved.
Description
Technical Field
The utility model relates to a steel case roof beam technical field especially relates to steel case roof beam structure.
Background
The steel box girder structure is composed of a series of components such as a top plate, a bottom plate, a web plate, a longitudinal stiffening rib, a transverse stiffening rib, a vertical stiffening rib and the like, and all the components can be connected by using a welding process. Because the steel box girder has a plurality of welding parts and complex stress, the steel box girder always bears the repeated action of wheel load, and the uncertainty factors of the welding process are numerous, the welding seam can have a series of influences such as welding residual stress and the like, and the welding seam of the steel box girder often becomes the part of the structure which is most easy to crack and has faster crack development. On the other hand, the generation and development of the fatigue cracking of the steel box girder are also aggravated by large-flow and heavy-load traffic, and particularly the heavy traffic which plays a leading role in fatigue damage is greatly increased, so that the bridge adopting the section form of the steel box girder becomes a serious disaster area of the fatigue cracking of steel.
The treatment of the weld cracking between the bridge deck slab and the U rib is always the key and difficult point of the maintenance of the steel box girder. The method is limited by the characteristics of large-flow and heavy-load traffic of in-service bridges, and in the corresponding fatigue crack treatment, the maintenance treatment operation cannot be carried out in a mode of interrupting the traffic for a long time or influencing the traffic, so that the traffic influence is reduced, and the important factor for controlling the selection of a feasible scheme is formed. For the treatment of the type of cracks, the conventional typical repair methods (crack welding method, bolting reinforcing steel plate method, combined bridge deck pavement transformation method) are limited in the development of maintenance.
1) The welding method is to use a welding mode to weld together the cracks after being treated. Because welding is repeatedly carried out at the same position, a heat affected zone is expanded, and non-uniform heating of a repair welding area causes component segregation and structural stress to a certain degree, so that the mechanical property and microstructure of the repair welding area are different from those of a non-repair welding area, and the welding quality is influenced. According to the results of the related studies, repeated welding causes a decrease in tensile strength and elongation. Except for the damage of the process, the construction quality is also difficult to guarantee, on one hand, the construction quality is difficult to guarantee by adopting overhead welding for in-box maintenance, and the penetration unsatisfied rate and the construction defects exceed the in-factory processing. On the other hand, under the condition of not interrupting the traffic, the vibration of the bridge deck can also cause serious influence on welding construction.
2) The bolted reinforced steel plate is used for reinforcing cracks at the crack development position in a bolting mode, and plays a role in replacing reinforcement. The method needs to open holes at corresponding positions of the U-shaped ribs and the top plate, the existing steel structure is locally weakened, and meanwhile, the problem of stress concentration at bolt holes is solved. The bolting of the top plate needs to break the pavement of the corresponding area of the top plate, which causes the interruption of traffic. The protruding bolt heads can cause the encroachment on the local part of the pavement layer, and weak pavement stress links are caused.
3) The combined bridge deck pavement transformation method is characterized in that the existing pavement is replaced by the ultra-high performance concrete pavement, the pavement rigidity is increased, and the steel plate stress is reduced, so that the development of subsequent cracks is controlled. The method needs to destroy the existing pavement, and simultaneously needs to consider the compatibility problem of the adopted ultra-high performance concrete pavement system and the original system. The same requirement for long-term traffic closure limits the choice of this method.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The to-be-solved technical problem of the utility model is that the big just problem that repair technology is limited of the restoration degree of difficulty of current steel box girder structure when the welding seam ftractures.
(II) technical scheme
In order to solve the technical problem, the utility model provides a steel box girder structure, including steel box girder subassembly and vertical reinforcement subassembly, the steel box girder subassembly includes decking and U rib, the open end of U rib with the bottom surface of decking is connected and is formed the cross section and be cyclic annular closed structure, vertical reinforcement subassembly paste in the decking with on the U rib, in order to cover the decking with the welding seam that the U rib is connected.
Wherein, the longitudinal reinforcement subassembly extends the setting along the length direction of steel box girder subassembly.
The longitudinal reinforcing component comprises two reinforcing pieces symmetrically arranged on two sides of the U rib, one end of each reinforcing piece is pasted on the bottom surface of the bridge deck, and the other end of each reinforcing piece is pasted on the outer surface of the web plate of the U rib.
Wherein, still include at least one horizontal reinforcement subassembly, horizontal reinforcement subassembly perpendicular to the decking sets up, horizontal reinforcement subassembly paste in the decking with the welding seam department of U rib, and encircle on the cross section of steel box girder subassembly the U rib.
Wherein, every horizontal reinforcement subassembly is followed the width direction of steel box girder subassembly sets up, and is a plurality of horizontal reinforcement subassembly is followed the length direction of steel box girder subassembly distributes in proper order and sets up.
Wherein, be equipped with first flange board and second flange board on the horizontal reinforcement subassembly, first flange board paste in the bottom surface of decking, the second flange board paste in the surface of the web of U rib.
The transverse reinforcing component comprises a plurality of pairs of transverse reinforcing pieces, and each pair of the transverse reinforcing pieces are oppositely arranged and connected in a splicing mode to surround one U rib.
And the adjacent two pairs of the sub transverse reinforcing pieces are connected through a fastener.
(III) advantageous effects
The above technical scheme of the utility model has following advantage:
the utility model discloses steel box girder construction sets up vertical reinforcement subassembly in the welded seam department of decking and floor, takes the mode of pasting between vertical reinforcement subassembly and the original structure, utilizes the mode of pasting the reinforcement spare promptly and harmlessly to restore steel box girder decking-U rib angle welding seam fracture. The pasting reinforcing piece is characterized in that a high-performance structural adhesive is used for connecting a high-strength material with a structure to be reinforced, the plane force transmission form of the pasted integral structure replaces the concentrated force transmission form of the traditional welding or bolting, the stress concentration condition is relieved, the nondestructive treatment of the part to be repaired is guaranteed, the longitudinal reinforcing component after pasting can be conveniently detached, and the possibility is reserved for other possible subsequent alternative treatment schemes. Under the condition that the limited conditions of steel box girder maintenance development in the prior art are more, the longitudinal reinforcing component is adhered to the fatigue cracking position of the steel box girder, other feasible schemes are provided besides welding and bolting, the effects of structural reinforcement are achieved, the bearing capacity is improved, the crack development is limited, and the maintenance effects of sustainable maintenance, nondestructive maintenance and reduction of influence on traffic passage as far as possible are achieved.
The thickness and the length of a steel plate of the longitudinal reinforcing component are determined according to the stress requirement, and the aim is to directly transmit the bridge deck load to the U rib to bear the force by utilizing the transverse supporting action of the longitudinal reinforcing component under the action of the vehicle load along the cross section direction of the steel box girder component, so that the stress condition of a welding seam between a bridge deck and the U rib is improved, and the original stress system is ensured not to be greatly changed; the second purpose is to exert the rigidity effect of the longitudinal reinforcing component to replace and reinforce the rigidity at the crack. Through the mode of gluing the steel reinforcement, can effectual reduction decking warp and U rib stress, under the same loading condition, compare with original structure state, under the simulation wheel loading operating mode, can reduce 19% decking warp and 15% U rib stress, under the reliable circumstances of gluing the steel, can play good structure reinforcement and delay fatigue development's effect.
In addition to the technical problems addressed by the present invention, the technical features of the constituent technical solutions, and the advantages brought by the technical features of these technical solutions, which are described above, other technical features of the present invention and the advantages brought by these technical features will be further explained with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a steel box girder structure with a longitudinal reinforcing component according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a steel box girder structure with a transverse reinforcing component according to an embodiment of the present invention;
FIG. 3 is the embodiment of the utility model provides a structural sketch of drilling when restoreing steel box girder bridge welding seam fracture.
1: a steel box girder assembly; 11: a bridge deck; 12: a U-rib;
2: a longitudinal reinforcement assembly; 21: a reinforcement member;
3: a transverse reinforcement assembly; 31: a first flange plate; 32: a second flange plate; 33: a sub-lateral reinforcement;
4: a fastener;
5: cracking;
6: and (6) drilling.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, unless otherwise specified, "plurality", and "plural" mean two or more, and "several", and "several groups" mean one or more.
As shown in fig. 1, the embodiment of the utility model provides a steel box girder structure, including steel box girder subassembly 1 and vertical reinforcement subassembly 2, steel box girder subassembly 1 includes decking 11 and U rib 12, and the open end of U rib 12 is connected with the bottom surface of decking 11 and is formed the cross section and be cyclic annular closed structure, and vertical reinforcement subassembly 2 is pasted on decking 11 and U rib 12 to cover the welding seam that decking 11 and U rib 12 are connected.
The utility model discloses steel box girder construction sets up vertical reinforcement subassembly 2 in the welded joint department of decking 11 and floor, takes the mode of pasting between vertical reinforcement subassembly 2 and the primary structure, utilizes the mode of pasting the reinforcement promptly to harmless restoration steel box girder bridge panel 11-U rib 12 fillet weld fracture. The pasting reinforcing piece is characterized in that a high-performance structural adhesive is used for connecting a high-strength material with a structure to be reinforced, the plane force transmission form of the pasted integral structure replaces the concentrated force transmission form of the traditional welding or bolting, the stress concentration condition is relieved, the nondestructive treatment of the part to be repaired is guaranteed, the longitudinal reinforcing component 2 after pasting can be conveniently detached, and the possibility is reserved for other possible subsequent alternative treatment schemes. Under the condition that the limited conditions of steel box girder maintenance development in the prior art are more, the longitudinal reinforcing component 2 is adhered to the fatigue cracking position of the steel box girder, other feasible schemes are provided besides welding and bolting, the effects of structural reinforcement, bearing capacity improvement and crack development limitation are achieved, and the maintenance effects of sustainable maintenance, nondestructive maintenance and traffic passage influence reduction as far as possible are achieved.
The thickness and the length of the steel plate of the longitudinal reinforcing component 2 are determined according to the stress requirement, and the purpose is that under the action of vehicle load along the cross section direction of the steel box girder component 1, the bridge deck load is directly transmitted to the U rib 12 to be stressed by utilizing the transverse supporting action of the longitudinal reinforcing component 2, so that the stress condition of a welding seam between the bridge deck 11 and the U rib 12 is improved, and the original stress system is ensured not to be greatly changed; the second purpose is to exert the rigidity effect of the longitudinal reinforcing component 2 to replace and reinforce the rigidity at the crack. Through the mode of gluing steel reinforcement, can effectual reduction decking 11 warp and U rib 12 stress, under the same loading condition, compare with original structure state, under the simulation wheel loading operating mode, can reduce 19% decking 11 warp and 15% U rib 12 stress, under the reliable circumstances of gluing steel, can play good structure reinforcement and delay fatigue development's effect.
Wherein, the longitudinal reinforcement subassembly 2 extends along the length direction of steel box girder subassembly 1 and sets up. In this embodiment, the plane that the cross section direction of steel box girder subassembly 1 is that decking 11 and U rib 12 cross section are constituteed, the length direction of steel box girder subassembly 1 is perpendicular to the cross section direction of steel box girder subassembly 1 promptly, because the easy fracture can appear in the welding seam department that decking 11 is connected with U rib 12, so vertical reinforcement subassembly 2 extends along the length direction of steel box girder subassembly 1 and sets up and cover the crack position, can strengthen decking 11 and U rib 12 structural strength, improve bearing capacity and play the effect of limiting crack development.
The longitudinal reinforcing component 2 includes two reinforcing members 21 symmetrically disposed at both sides of the U-shaped rib 12, one end of each reinforcing member 21 is adhered to the bottom surface of the bridge deck 11, and the other end is adhered to the outer surface of the web of the U-shaped rib 12. In this embodiment, the reinforcing member 21 of the longitudinal reinforcing component 2 is an arc-shaped bent steel plate, the steel plate has a bend, and the portions at two sides of the bend are respectively adhered to the bottom surface of the bridge deck 11 and the outer surface of the web of the U rib 12, so as to connect the bridge deck 11 and the U rib 12, and serve as structural reinforcement for the bridge deck 11 and the U rib 12.
As shown in fig. 2, the embodiment of the present invention provides a steel girder box structure further includes at least one horizontal reinforcement component 3, the horizontal reinforcement component 3 is perpendicular to the bridge deck 11, the horizontal reinforcement component 3 is pasted in the welding seam of the bridge deck 11 and the U rib 12, and surrounds the U rib 12 on the cross section of the steel girder box component 1. The transverse reinforcing components 3 are also arranged on the bottom surface of the bridge deck slab 11, are of a structure perpendicular to the bridge deck slab 11 and span the U-shaped ribs 12, the local stress mode of the steel box girder component 1 can be changed, and the number of the transverse reinforcing components 3 is determined according to stress requirements. In this embodiment, after one end of the transverse reinforcing component 3 is adhered to the bridge deck 11 and the U-shaped rib 12, the other end extends to the closed end of the U-shaped rib 12, and the transverse reinforcing component 3 is symmetrical at two sides of the U-shaped rib 12, so as to surround the U-shaped rib 12. Through addding horizontal reinforcement subassembly 3, with the reinforcement of local position horizontal rigidity, form the orthotropic stress system with vertical reinforcement subassembly 2 jointly, can reduce 52% decking 11 deformation and 55% U rib 12 stress, glue under the reliable circumstances of steel, can play good structure reinforcement and delay the effect of fatigue development, and vertical reinforcement subassembly 2 is better with the effect of horizontal reinforcement subassembly 3 reinforcement simultaneously.
Wherein, every horizontal reinforcement subassembly 3 sets up along the width direction of steel box girder subassembly 1, and a plurality of horizontal reinforcement subassemblies 3 distribute in proper order along the length direction of steel box girder subassembly 1 and set up. In this embodiment, the cross sectional direction of the steel box girder assembly 1 is the width direction of the steel box girder assembly 1, a plurality of horizontal reinforcing assemblies 3 can be continuously arranged on one cross section to serve as one horizontal reinforcing assembly 3, and a plurality of horizontal reinforcing assemblies 3 can be continuously arranged in the length direction of the steel box girder, so that the local stress mode of the steel box girder structure is changed.
Wherein, the transverse reinforcing component 3 is provided with a first flange plate 31 and a second flange plate 32, the first flange plate 31 is adhered to the bottom surface of the bridge deck 11, and the second flange plate 32 is adhered to the outer surface of the web plate of the U rib 12. The transverse reinforcing component 3 is attached to the bridge deck 11 and the U rib 12 through the flange plates formed by extending the end edges of the transverse reinforcing component, the transverse reinforcing component is connected through high-performance structural adhesive, and a welding seam between the first flange plate 31 and the second flange plate 32 is formed by welding the bridge deck 11 and the U rib 12. Set up the effective increase of flange plate and transversely reinforce the area of contact of subassembly 3 and steel box girder structure, it is stable more to paste the back firm in connection.
Wherein the lateral reinforcement member 3 includes a plurality of pairs of sub-lateral reinforcement members 33, and each pair of sub-lateral reinforcement members 33 are disposed opposite to each other and connected in a split manner to surround one U rib 12. The transverse reinforcing component 3 can be of an integral or assembled structure, the integral assembly is that the transverse reinforcing component 3 is a whole on the cross section of the steel box girder component 1, the splicing assembly is not needed, and the transverse reinforcing component 3 is integrally connected with the steel box girder component 1 in a dismounting manner. The assembly type assembly is provided in the embodiment, each transverse reinforcing component 3 comprises two symmetrical sub transverse reinforcing pieces 33, one end of each sub transverse reinforcing piece 33 is adhered to the steel box girder component 1, the other end of each sub transverse reinforcing piece 33 extends towards the closed end of the U rib 12, and the combination of the sub transverse reinforcing pieces is butted in a bolting mode.
Wherein, two adjacent pairs of the sub-transverse reinforcements 33 are connected by the fastener 4. In this embodiment, a plurality of U ribs 12 are distributed on the cross section of the same steel box girder assembly 1, and the outer side of each U rib 12 surrounds a pair of sub-transverse reinforcing members 33, so as to ensure the integrity of the transverse reinforcing assemblies 3 on the same cross section and improve the connection strength and the structural strength, the transverse reinforcing assemblies 3 are connected by fasteners, in this embodiment, the fasteners are bolts and are connected in a bolting mode.
In this embodiment, the material, thickness and length of the steel plate used for the transverse reinforcing component 3 and the longitudinal reinforcing component 2 are determined according to the crack cracking length and the stress requirement. The arc-shaped steel plate of the longitudinal reinforcing assembly 2 is bent in a machining mode, and the bending radius is as small as possible, so that the requirements of being close to the bridge deck 11 and the U-shaped ribs 12 are met. The temperature application range of the high-performance structural adhesive for pasting needs to meet the requirements of high-temperature special working conditions such as subsequent pavement replacement and the like, and meanwhile, the high-performance structural adhesive has enough durability and can be suitable for the action of frequent vibration and impact load. During construction, the influence of vibration on the solidification of the adhesive is reduced by adopting a temporary supporting mode, and necessary construction measures are adopted to ensure that the thickness of the bonding layer meets the requirement.
The utility model discloses at present in the middle of the engineering is used, the used material of reinforcement subassembly uses steel as main substrate. Other similar high-strength and light-weight materials, such as carbon fiber plates and the like, can also be used as main substrates of the processing template, and have the substitutability. High performance binders are a wide selection of types and are also alternatives. The utility model discloses paste as main connected mode with high performance material, bolt, welding etc. though have the limitation, still can regard as alternative connected mode.
The embodiment of the utility model provides a still provide the method of restoreing steel box girder bridge welding seam fracture, include:
along the width direction of the steel box girder, a transverse reinforcing component 3 surrounding the U rib 12 is adhered to the welding seam of the bridge deck 11 and the U rib 12;
and adhering longitudinal reinforcing components 2 covering the welding seams of the bridge deck 11 and the U ribs 12 on the bridge deck 11 and the U ribs 12 along the length direction of the steel box girder.
The utility model discloses method for restoreing steel box girder bridge welding seam fracture, take the mode of pasting to be connected between vertical reinforcement subassembly 2 and horizontal reinforcement subassembly 3 and the steel box girder subassembly, utilize promptly to glue the harmless steel mode and restore steel box girder bridge panel 11-U rib 12 fillet weld fracture. The sticky steel is formed by connecting a high-strength material with a structure to be reinforced by using a high-performance structural adhesive, the plane force transmission form of the adhered overall structure replaces the traditional concentrated force transmission form of welding or bolting, the stress concentration condition is relieved, the nondestructive treatment of the part to be repaired is ensured, the longitudinal reinforcing component 2 and the transverse reinforcing component 3 which are adhered on the other hand can be conveniently detached, and the possibility is reserved for other possible subsequent alternative treatment schemes. Under the condition that the limited conditions of steel box girder maintenance development in the prior art are more, the longitudinal reinforcing component 2 and the transverse reinforcing component 3 are adhered to the fatigue cracking position of the steel box girder component, other feasible schemes are provided besides welding and bolting, the structural reinforcement is achieved, the bearing capacity is improved, the development of cracks is limited, and the maintenance effects of sustainable maintenance, nondestructive maintenance and reduction of traffic passing influence as far as possible are achieved.
As shown in fig. 3, holes 6 are drilled downward in the thickness direction of the steel box girder bridge at both ends of a crack 5 formed by cracking a weld between the deck slab 11 and the U-rib 12. The crack treatment of the steel box girder assembly 1 is carried out by combining the mode of adhering the transverse reinforcing assembly 3 in the width direction of the steel box girder assembly 1, adhering the longitudinal reinforcing assembly 2 in the length direction of the steel box girder assembly 1 and drilling and crack arrest. In this embodiment, the direction perpendicular to the length direction of the bridge deck 11 and the steel box girder assembly 1 is the thickness direction of the steel box girder assembly 1, and after nondestructive inspection or borehole inspection, a hole is drilled according to the position of the tip of the detected crack 5 to stop the crack. By means of drilling and crack stopping, on one hand, a crack development path is cut off, and on the other hand, a plastic area is formed to limit the crack from continuously expanding towards the plate and the U-shaped rib 12.
1) And establishing a local fine analysis model by using ANSYS analysis software. Wherein the bridge deck 11, the U ribs 12, the transverse reinforcing components 3, the longitudinal reinforcing components 2 and the like are simulated by adopting a shell63 unit; the gap between the bonded steel longitudinal reinforcing component 2 and the steel box girder component 1 to be repaired is controlled to be 5 mm. Simulating connection in a node coupling mode; and simulating the cracking of the welding seam position by adopting a live-dead unit method. And (4) carrying out loading calculation according to a vehicle load checking standard in general Specification for design of highway bridges and culverts (JTG D60-2015). And (4) wheel load is averagely loaded on the nodes at the loading positions and is applied according to the node load. The deformation of the deck slab 11 and the Von Mises stress condition of the U-ribs 12 are of great concern.
Theoretical calculation shows that through the mode of bonded steel reinforcement, the deformation of the bridge deck 11 and the stress of the U rib 12 can be effectively reduced by a simplified scheme (only the longitudinal reinforcement component 2 is added) and a complete scheme (the longitudinal reinforcement component 2 and the transverse reinforcement component 3 are added). Under the same loading condition, compared with the original structure state, under the condition of simulating the loading condition of the wheel, the simplified scheme can reduce 19 percent of deformation of the bridge deck plate 11 and 15 percent of stress of the U-shaped rib 12; the complete solution can reduce 52% of the deformation of the bridge deck 11 and 55% of the stress of the U-ribs 12. The scheme can play a role in good structure reinforcement and fatigue development delay under the condition of reliable steel sticking, and the complete scheme for longitudinal and transverse simultaneous reinforcement has a better effect.
2) And effect tracking is carried out on the position after construction is finished. The effect was mechanically evaluated from the angles of vibration of the deck slab 11, stress of the U-ribs 12, and relative displacement of the steel-bonded steel plates. Meanwhile, the internal perfusion fullness is qualitatively judged by adopting an ultrasonic detection mode.
The monitoring result shows through tracking monitoring.
(1) After the steel plate is adhered, the vibration condition of the bridge deck 11 can be effectively controlled. Before steel is bonded, the instantaneous maximum acceleration of part of the bridge deck 11 can reach 4g under the impact action of heavy vehicles, and the vibration is visible visually. After steel is bonded, the vibration of the bridge deck plate 11 is effectively reduced, when different vehicle types pass by, the whole vibration is smooth, and the acceleration amplitude is reduced to be below 2 g.
(2) After the steel plate was attached, the stress of the U-rib 12 was monitored. From the monitoring result, when different vehicle types pass by, the strain change of the bottom edge of the U rib 12 is smooth, and no obvious fluctuation is seen. And the long-term monitoring rule is consistent with the overall temperature rise and fall change rule.
(3) And (5) performing ultrasonic qualitative judgment, wherein the glue layer is basically uniform and full.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The utility model provides a steel box girder structure which characterized in that: including steel box girder subassembly and vertical reinforcement subassembly, the steel box girder subassembly includes decking and U rib, the open end of U rib with the bottom surface of decking is connected and is formed the cross section and be cyclic annular closed structure, vertical reinforcement subassembly paste in the decking with on the U rib, in order to cover the decking with the welding seam that the U rib is connected.
2. The steel box beam structure of claim 1, wherein: the longitudinal reinforcing component extends along the length direction of the steel box girder component.
3. The steel box beam structure of claim 1, wherein: the longitudinal reinforcing component comprises two reinforcing pieces symmetrically arranged on two sides of the U rib, one end of each reinforcing piece is pasted on the bottom surface of the bridge deck, and the other end of each reinforcing piece is pasted on the outer surface of the web plate of the U rib.
4. The steel box beam structure of claim 1, wherein: still include at least one horizontal reinforcement subassembly, horizontal reinforcement subassembly perpendicular to the decking sets up, horizontal reinforcement subassembly paste in the decking with the welding seam department of U rib, and encircle on the cross section of steel box girder subassembly the U rib.
5. The steel box beam structure of claim 4, wherein: every horizontal reinforcement subassembly is followed the width direction of steel box girder subassembly sets up, and is a plurality of horizontal reinforcement subassembly is followed the length direction of steel box girder subassembly distributes in proper order and sets up.
6. The steel box beam structure of claim 4, wherein: be equipped with first flange board and second flange board on the horizontal reinforcement subassembly, first flange board paste in the bottom surface of decking, the second flange board paste in the surface of the web of U rib.
7. The steel box beam structure of claim 4, wherein: the transverse reinforcing component comprises a plurality of pairs of transverse reinforcing pieces, and each pair of the transverse reinforcing pieces are oppositely arranged and connected in a splicing mode to surround one U rib.
8. The steel box beam structure of claim 7, wherein: and two adjacent pairs of the sub transverse reinforcing pieces are connected through a fastener.
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| CN202020459068.7U CN212505801U (en) | 2020-04-01 | 2020-04-01 | Steel box girder structure |
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| CN202020459068.7U CN212505801U (en) | 2020-04-01 | 2020-04-01 | Steel box girder structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114840897A (en) * | 2022-05-16 | 2022-08-02 | 金陵科技学院 | Coupling calculation method for residual stress of steel box girder welding joint and vehicle induced structural stress |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114840897A (en) * | 2022-05-16 | 2022-08-02 | 金陵科技学院 | Coupling calculation method for residual stress of steel box girder welding joint and vehicle induced structural stress |
| CN114840897B (en) * | 2022-05-16 | 2024-02-02 | 金陵科技学院 | Coupling calculation method for residual stress and vehicle-induced structural stress of welded joint of steel box girder |
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