Unlock instant, AI-driven research and patent intelligence for your innovation.

Steel box truss type arch truss segment and support-free assembling and erecting method thereof

A truss-type, support-free technology, which is applied in the direction of erecting/assembling bridges, arch bridges, bridge forms, etc., can solve the problems of difficult construction, long construction period, and high cost, and achieve the effect of improving assembly efficiency

Pending Publication Date: 2020-06-30
中铁大桥局第七工程有限公司
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of steel box truss type arch truss section and its non-destructive Bracket assembly and erection method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Steel box truss type arch truss segment and support-free assembling and erecting method thereof
  • Steel box truss type arch truss segment and support-free assembling and erecting method thereof
  • Steel box truss type arch truss segment and support-free assembling and erecting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see Figure 7 with Figure 8 As shown, the embodiment of the present invention provides a steel box truss type arch truss segment, including:

[0046] Arch truss segment 1, the arch truss segment 1 is provided with two groups, the two groups of arch truss segments 1 are arranged parallel to each other and spaced apart, the arch truss segment 1 includes an upper chord 11 and a lower chord 12, the upper chord 11 and the lower chord 12 are arc structures. The upper chord 11 and the lower chord 12 are fixedly connected by the web 13, and there are multiple webs 13 between the upper chord 11 and the lower chord 12, and the web 13 is spliced ​​with the upper chord 11 and the lower chord 12 to form an isosceles Triangular structure.

[0047] Temporary installation devices are provided at the ends of the upper chord 11 and the lower chord 12, and the temporary installation devices are used to connect adjacent arch truss segments. The temporary installation device includes a...

Embodiment 2

[0050] see Figure 7 with Figure 8 As shown, the embodiment of the present invention provides a steel box truss-type arch truss segment. The difference between this embodiment and Embodiment 1 is that it also includes an upper plane connection system and a lower plane connection system, and an upper plane connection system and a lower plane connection system. The systems are parallel to each other and arranged at intervals, the upper plane connection system is located above the lower plane connection system, and the upper plane connection system and the lower plane connection system are fixedly connected to the arch truss segment 1 and the middle connection system 2 respectively.

[0051] Specifically, the upper plane connection system includes a left upper parallel link 31 and a right upper parallel link 32, one end of the left upper parallel link 31 is fixedly connected to the middle of the upper cross brace 21 by bolts, and the other end of the left upper parallel link 31 ...

Embodiment 3

[0054] see Figure 6 As shown, the embodiment of the present invention provides a steel box truss-type arch truss section. The difference between this embodiment and Embodiment 1 is that the upper chord 11 includes a chord top plate 111, a chord bottom plate 112 and a chord riser 113. Rod top plate 111, chord bottom plate 112 and chord riser 113 are connected end to end to form a hollow rectangular structure. Reinforcement ribs 114 are welded on the inner walls of the chord top plate 111 , the chord bottom plate 112 and the chord riser 113 . The structure of the lower chord 12 is the same as that of the upper chord 11 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a steel box truss type arch truss segment and a support-free assembling and erecting method thereof, and belongs to the technical field of arch bridge construction. The arch truss segment comprises two groups of arch truss sheet sections, each arch truss sheet section comprises an upper chord member and a lower chord member, the upper chord members and the lower chord members are fixedly connected through web members, and temporary mounting devices are arranged at the end parts of the upper chord members and the lower chord members; and the middle connecting system, theupper plane connecting system and the lower plane connecting system are fixedly connected between the two groups of arch truss piece sections. During erection, the cable crane lifts the lifting appliance to a set elevation to mount the arch truss piece sections to be erected on the erected arch truss piece sections through the temporary mounting devices; fastening cables are hung on the arch truss segments to be erected and are tensioned in a grading manner, a cable crane is transversely moved into the bridge to hoist the middle connecting system and connect the middle connecting system between the upstream arch truss segment frame and the downstream arch truss segment frame, and finally the upper plane connecting system and the lower plane connecting system are assembled by using the cable crane to form the arch truss segment. The arch bridge is assembled and erected without a support, and the construction efficiency of the arch bridge is improved.

Description

technical field [0001] The invention relates to the technical field of steel arch bridge construction, in particular to a steel box truss-type arch truss segment and a support-free assembly and erection method thereof. Background technique [0002] With the rapid development of traffic engineering in my country in recent years, a large number of long-span bridges across mountainous and canyon terrains will inevitably emerge. As a commonly used bridge type, steel arch bridges not only have a large spanning capacity, but also have a large overall rigidity and good overall stability. , small temperature deformation, beautiful shape and other characteristics, can be well combined with the canyon terrain, and become the main bridge type for the line to cross the canyon terrain. [0003] The steel arch frames used in arch bridges are usually assembled from multiple arch truss segments. There are generally four methods for assembling existing large-span steel truss arch bridges: one...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E01D19/00E01D2/00E01D4/00E01D21/00E01D101/30
CPCE01D2/00E01D4/00E01D19/00E01D21/00E01D2101/30
Inventor 祝良红蒋本俊许鑫王同民周荣贵王吉连章德春陈开桥李晓琪刘旭程建华陶正林蒋思君伍杰张旭
Owner 中铁大桥局第七工程有限公司