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Steel arch support connecting member for field tunnel

A technology for connecting parts and steel arches, which is applied in the field of tunnel steel arches, can solve the problems of high erection cost and prolonged tunnel construction time, and achieve the effect of improving the support effect and reducing the extrusion deformation.

Inactive Publication Date: 2019-10-18
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a steel arch support connector for field tunnels, to solve the problem in the above-mentioned background technology that in some parts with poor geology, it is necessary to reduce the erection distance between the steel arches to improve the safety of the tunnel. Supporting effect, but this also prolongs the construction time of the tunnel, and increases the erection cost. However, the existing steel arches are often simple in structure, and the supporting effect is often determined by the strength of the steel itself.

Method used

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  • Steel arch support connecting member for field tunnel
  • Steel arch support connecting member for field tunnel
  • Steel arch support connecting member for field tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment one: see attached figure 1 And attached Figure 5 , during installation, the second engaging grooves 11 on both sides of the supporting cross bar 1 are engaged on the inner side of the steel arch main body 8, and at the same time, the top ends of the supporting push rod 9 and the side supporting rod 19 are engaged on the inner side of the steel arch main body 8. On the inner side, the second threaded rod 17 at both ends of the support cross bar 1 passes through the support cross bar 1 and the steel arch main body 8, and is fixed by the second limit nut 18, so that the single steel arch main body 8 can be reinforced, and at the same time , multiple steel arch main bodies 8 are inserted from the front of the support cross bar 1 through the connecting mechanism 5 after the installation of the support cross bar 1 is completed, refer to the attached Figure 4, and installing limit pins 6 in the limit holes 502 on both sides of the support cross bar 1 can complete...

Embodiment 2

[0033] Embodiment two: see attached figure 2 , during installation, the second engaging grooves 11 on both sides of the supporting cross bar 1 are engaged on the inner side of the steel arch main body 8, and at the same time, the top ends of the supporting push rod 9 and the side supporting rod 19 are engaged on the inner side of the steel arch main body 8. Then insert it from the front of the support cross bar 1 through the connecting mechanism 5, refer to the attached Figure 4 , and install the limit pin 6 in the limit holes 502 on both sides of the support cross bar 1 to complete the connection of multiple support cross bars 1, and then install the slider 13 on the top of the support bottom column 2 from the slide port 7 Push it into the chute 16, and slide in the chute 16, so that a support bottom column 2 is installed on both sides of the bottom end of the support cross bar 1, and the support bottom post 2 plays a further supporting effect on the support cross bar 1 , ...

Embodiment 3

[0034] Embodiment three, see appendix image 3 , during installation, the second engaging grooves 11 on both sides of the supporting cross bar 1 are engaged on the inner side of the steel arch main body 8, and at the same time, the top ends of the supporting push rod 9 and the side supporting rod 19 are engaged on the inner side of the steel arch main body 8. At the same time, insert it from the front of the support cross bar 1 through the connecting mechanism 5, refer to the attached Figure 4 , and install the limit pin 6 in the limit holes 502 on both sides of the support cross bar 1 to complete the connection of multiple support cross bars 1, and then install the slider 13 on the top of the support bottom column 2 from the slide port 7 Push it into the chute 16, and slide in the chute 16, install a plurality of support bottom columns 2 on the bottom end of the support cross bar 1, and then, place the second support column 2 between adjacent two support bottom columns A co...

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PUM

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Abstract

The invention discloses a steel arch support connecting member for a field tunnel. The steel arch support connecting member comprises support cross bars and steel arch main bodies; the inner sides ofthe steel arch main bodies are transversely provided with the support cross bars; the middles of the top ends of the support cross bars are vertically and fixedly provided with support ejector rods; the top ends of the support cross bars on the two sides of the support ejector rods are fixedly provided with side support rods; and the bottom ends of the support cross bars are vertically provided with support bottom columns. According to the steel arch support connecting member for the field tunnel, by arranging the support cross bars and a connecting mechanism, the multiple support cross bars are connected by inserting the connecting mechanism from the front surfaces of the support cross bars, reinforcement and connection of the steel arch main bodies are completed, the phenomenon that thesteel arch main bodies are insufficient in strength on a part with poor geological condition and is deformed, and consequently the tunnel collapses is avoided, and by connecting the steel arch main bodies together, when a single steel arch main body is deformed, the other steel arch main bodies can also support the deformed part.

Description

technical field [0001] The invention relates to the technical field of tunnel steel arches, in particular to a steel arch support connector for field tunnels. Background technique [0002] In the initial stage of tunnel construction, steel arches are required for initial support. The steel arch frame is a special circumferential I-beam or other type steel. After the excavation of the tunnel, the initial spraying, hanging net, and vertical arch frame are carried out. I-steel arch frames are generally used in places with poor geology such as Class V surrounding rocks, and grid steel frames are used in places with better geology such as Class IV surrounding rocks. [0003] Although the existing steel arches have basically met the support requirements inside the tunnel, in some parts with poor geological conditions, it is necessary to reduce the erection distance between the steel arches to improve the support effect on the tunnel, which also makes The construction time of the...

Claims

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Application Information

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IPC IPC(8): E21D11/18E21D11/22E21D11/30
CPCE21D11/183E21D11/22E21D11/30
Inventor 孙闯李东信长昊李杰王宝强崔莹妹
Owner LIAONING TECHNICAL UNIVERSITY