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CN-224227628-U - I-steel for bridge

CN224227628UCN 224227628 UCN224227628 UCN 224227628UCN-224227628-U

Abstract

The utility model belongs to the technical field of steel structures, and particularly relates to an I-steel for a bridge, which comprises an I-steel body, wherein a web plate of the I-steel body is uniformly provided with a plurality of holes, each hole is filled with foamed aluminum, the web plate of the I-steel body is also provided with a plurality of reinforcing ribs, the reinforcing ribs and the holes are distributed in a staggered manner, two adjacent I-steel bodies are connected through a connecting mechanism, the holes are arranged into a hexagonal structure, the holes are uniformly divided into a plurality of groups, the holes are uniformly distributed along the length direction of the I-steel body, and the holes and the reinforcing ribs are alternately distributed.

Inventors

  • LIU BINBIN
  • GENG RONGBO
  • YANG HAIJIAN
  • LIU GANG
  • LUO SHUBI
  • ZHONG ZHAOHONG
  • Hui Xiangmeng
  • ZHAO HUI

Assignees

  • 普凯盛科技(南京)有限公司

Dates

Publication Date
20260512
Application Date
20250605

Claims (8)

  1. 1. The I-steel for the bridge is characterized by comprising an I-steel body (1), wherein a plurality of holes are uniformly distributed on a web plate of the I-steel body (1), a light filling body is arranged in each hole, a plurality of reinforcing ribs (12) are further arranged on the web plate of the I-steel body (1), the reinforcing ribs (12) are distributed in a staggered mode with the holes, and two adjacent I-steel bodies (1) are connected through a connecting mechanism (2).
  2. 2. The I-steel for bridges of claim 1 wherein said holes are formed in a hexagonal configuration and are uniformly divided into a plurality of groups, said groups of holes being uniformly distributed along the length of said I-steel body (1), said groups of holes being alternately distributed with said plurality of reinforcing ribs (12).
  3. 3. The I-steel for a bridge as set forth in claim 2, wherein the reinforcing rib (12) is provided along the height direction of the I-steel body (1), and the reinforcing rib (12) is provided in a wave-like structure with the peak height of the reinforcing rib (12) decreasing from the center to both ends.
  4. 4. The I-steel for bridges of claim 1 wherein said web and flange of said I-steel body (1) are sequentially provided with a hot dip galvanization layer, a graphene modified epoxy paint layer and a polysiloxane paint layer, said hot dip galvanization layer being disposed in contact with said I-steel body (1).
  5. 5. The I-steel for bridges of claim 1 wherein said connecting means (2) comprises two symmetrically arranged spliced steels (21), said spliced steels (21) are arranged in an I-shaped structure, and said two spliced steels (21) are attached to two sides of said web, and at the same time, the upper and lower ends of said spliced steels (21) are in contact with flanges distributed up and down.
  6. 6. The I-steel for bridges of claim 5 wherein protrusions (13) and studs (14) are fixedly arranged at the end parts of the two I-steel bodies (1) close to each other, grooves (22) are formed in the side walls of the two spliced steels (21) close to each other, through holes (23) are formed in the end parts of the spliced steels (21), the protrusions (13) extend into the grooves (22), and the studs (14) are arranged through the through holes (23) and are in threaded connection with nuts at the end parts.
  7. 7. The bridge beam as claimed in claim 6, wherein a first sealing layer (24) is arranged on the side wall of each of the two spliced steels (21), the first sealing layers (24) are attached to the web plate, a side plate (25) is fixedly arranged on the side wall of one spliced steel (21), a second sealing layer (26) is arranged on the side wall of the side plate (25), the side plate (25) is located between the two beam bodies (1), and the second sealing layer (26) is attached to the beam bodies (1).
  8. 8. The bridge beam according to claim 6, wherein first sealing layers (24) are arranged on side walls of the two spliced steels (21) close to each other, the first sealing layers (24) are arranged in a manner of being attached to webs, an intermediate plate (27) is arranged between the two spliced steels (21), a third sealing layer (28) is arranged on the side wall of the intermediate plate (27), the intermediate plate (27) is arranged between the two beam bodies (1), and the third sealing layer (28) is arranged in a manner of being attached to the beam bodies (1).

Description

I-steel for bridge Technical Field The utility model belongs to the technical field of steel structures, and particularly relates to an I-steel for a bridge. Background In the field of modern bridge engineering, I-steel becomes a key bearing member in the construction of a steel structure bridge by virtue of the excellent mechanical property of the I-steel. The unique cross-sectional shape of the bridge is excellent in bearing bending and shearing loads, and the bridge is widely applied to the parts of bridge bodies, supporting structures and the like. However, the existing I-steel for the steel structure bridge still has a plurality of problems to be solved in practical application. In the connection mode, the splicing of the I-steel is realized by adopting a welding process. When welding operation is carried out on a construction site, a special welding fixture with complex design and installation is needed to ensure the welding precision and quality, so that the preparation work and the installation time in the early stage of construction are greatly increased, the installation efficiency is low, the overall installation cost is obviously improved, meanwhile, the high temperature generated in the welding process can lead the I-beam to deform greatly at the joint, high welding stress is remained, the deformation and the stress weaken the structural performance of the I-beam, the use safety of a bridge with a steel structure is directly threatened, the aging and the damage of the bridge structure are accelerated, and the service life of the bridge is seriously reduced. In addition, the structural design of the traditional I-steel also has limitations. The section of the structure presents an I shape, the thickness of the flange is uniform, the web plate and the flange adopt right-angle transition, and the structure has stress concentration phenomenon when being stressed, so that the material utilization rate is insufficient. In engineering scenes of structural self-weight sensitivity of a cross-sea bridge, a high pier bridge and the like, the traditional I-steel is often required to increase the steel consumption to meet the bearing requirement because the high-efficiency distribution of materials cannot be realized, so that the self-weight of the bridge is greatly increased, and chain reaction is caused by increasing the basic load. In addition, under extreme environments such as strong earthquake, strong wind and the like, the earthquake response and the pneumatic effect can be amplified by the overweight structure, so that potential safety hazards are further aggravated, and the application and development of the steel structure bridge under special environments are severely limited by the technical bottlenecks. Disclosure of Invention The utility model aims to provide I-steel for a bridge, which aims to improve the strength and the connection strength of the I-steel and reduce the dead weight. In order to achieve the technical purpose, the utility model adopts the following scheme: The I-steel for the bridge comprises I-steel bodies, wherein a plurality of holes are uniformly distributed on the web plates of the I-steel bodies, light filler foamed aluminum is arranged in each hole, a plurality of reinforcing ribs are further arranged on the web plates of the I-steel bodies, the reinforcing ribs and the holes are distributed in a staggered mode, and two adjacent I-steel bodies are connected through a connecting mechanism. Further, the holes are arranged in a hexagonal structure, the holes are uniformly divided into a plurality of groups, the groups of holes are uniformly distributed along the length direction of the I-steel body, and the groups of holes and the reinforcing ribs are alternately distributed. Further, the reinforcing ribs are arranged along the height direction of the I-steel body, the reinforcing ribs are of a wave-shaped structure, and the wave peak heights of the reinforcing ribs decrease from the center to the two ends. Further, a hot dip galvanizing layer, a graphene modified epoxy paint layer and a polysiloxane paint layer are sequentially arranged on the outer surfaces of the web plate and the flange of the I-steel body, and the hot dip galvanizing layer is attached to the I-steel body. Further, coupling mechanism includes the concatenation steel that two symmetries set up, and the concatenation steel sets up to the I-shaped structure, and two concatenation steel laminating settings are in the both sides of web, and both ends contact with the edge of a wing that distributes from top to bottom about the concatenation steel simultaneously. Further, protruding and double-screw bolt are all fixed to be provided with at the tip that two I-steel bodies are close to each other, all are provided with the recess on the lateral wall that two concatenation steels are close to each other, all are provided with the through-hole at the tip of concatenation steel simultaneously, in protruding stre