CN217582162U - Arch frame structure capable of being pushed and installed - Google Patents
Arch frame structure capable of being pushed and installed Download PDFInfo
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- CN217582162U CN217582162U CN202220881543.9U CN202220881543U CN217582162U CN 217582162 U CN217582162 U CN 217582162U CN 202220881543 U CN202220881543 U CN 202220881543U CN 217582162 U CN217582162 U CN 217582162U
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Abstract
The utility model discloses a can push away bow member structure of dress, the bow member is used for the tunnel excavation, struts the construction, and the bow member is connected through the steel connecting plate and is made the single pin bow member by the bow member roof beam that the I-steel was made according to the tunnel profile, and parallel arrangement connects fixed constitution mobilizable bow member combination through the splice bar between the single pin bow member, in every single pin bow member plane, connect between the both sides I-steel that constitutes the bow member roof beam and be provided with the top of level and push away the support arm of arranging. The arch frame structure supports the corresponding hole section after the collapse, the block falling or the blasting operation is finished, the arch frame erection construction operation can be avoided in a single manual construction mode, the construction risk of 'head top and basin water' is avoided by adopting an equipment push-mounting method, and the construction safety factor of the site is higher; to the relatively poor condition of rock of prejudged face, can carry out the bow member in advance and assemble the construction in the hole, after slagging tap and accomplishing, in time strut the working face of newly excavating, improved the efficiency of construction, shorten process cycle time.
Description
Technical Field
The utility model belongs to the technical field of the tunnel construction, especially, belong to I-steel construction technique field in the tunnel, especially an arch frame structure construction installation that can push away dress that is applicable to geological conditions difference, easy collapse hole section.
Background
In large-scale hydraulic engineering construction, tunnel construction engineering is often involved, the tunnel construction mainly comprises two processes of excavation and supporting, wherein in a rock mass breaking tunnel section such as IV and V surrounding rocks, I-shaped steel erection and supporting construction is the most common and indispensable supporting mode in the tunnel; the conventional construction method is that after blasting and slag discharging are finished, single I-steel beams are installed in sequence by manpower, so that the defects of high safety risk, low efficiency and high resource investment exist. In order to meet the requirements of quick and efficient construction and safety guarantee, the arch push-mounting installation method is of great importance to tunnel construction.
Disclosure of Invention
The to-be-solved problem of the utility model is exactly to the relatively poor and top arch of geological conditions falls the more serious hole section of piece, the bow member structure that can push away the dress that adopts in the construction, avoids the safety risk of the artifical installation of overall process.
The utility model provides a following technical scheme realizes:
the utility model provides a can push away bow member structure of dress, bow member are used for the tunnel excavation, strut the construction, its characterized in that: the arch center is formed by connecting arch center beams made of I-shaped steel according to the contour of the tunnel through connecting steel plates to form single arch centers, the single arch centers are arranged in parallel and are fixedly connected through connecting ribs to form a movable arch center combination, and pushing support arms which are horizontally arranged are connected between the I-shaped steel on two sides of each single arch center beam in the plane of each single arch center.
And the end surfaces of the I-shaped steels forming the arch truss beams are provided with connecting steel plates which are fixedly welded, and the connecting steel plates of the adjacent I-shaped steels are fixedly connected through bolts.
The connecting ribs are welded and fixed on the outer side surface of the arch frame beam forming the arch frame combination and are arranged at intervals from one end to the other end of the arch frame beam.
Compared with the prior art, the utility model discloses bow member structure that can push away the dress has following beneficial effect:
1. the corresponding hole section is supported after the collapse, the block falling or the blasting operation is finished, the push-mounting arch center structure can avoid the arch center erection construction operation in a single manual construction mode, and the construction risk of 'head top and basin water' is avoided by adopting an equipment push-mounting method, so that the construction safety coefficient of the site is higher;
2. the arch assembling construction can be carried out in advance in the hole under the condition that the rock of the pre-judged tunnel face is poor, and after the slag is discharged, the newly excavated working face is supported in time, so that the construction efficiency is improved, and the process cycle time is shortened.
Drawings
FIG. 1 is a schematic structural view of the front view of the arch frame of the present invention;
fig. 2 is a side view of the present invention.
In the figure, 1 is an arch center beam, 2 is a pushing support arm, 3 is a connecting steel plate and 4 is a connecting rib.
Detailed Description
The present invention will be further described with reference to the following embodiments, which are intended to illustrate the principles of the present invention without limiting the present invention in any way, and the present invention is not beyond the scope of the present invention.
With reference to the accompanying drawings.
As shown in the figure, the push-mounted arch frames are formed by splicing processed I-shaped steel serving as arch frame beams 1 in a hole to form single arch frames, the spliced single arch frames are connected into an integral system by connecting ribs, and the integral system is pushed to an excavated working surface by using a loader or a digger to be reinforced and mounted.
And (3) connecting each arch frame by using phi 16 or 22 steel bars at a distance of 1-1.5 m/root, reserving a transport space at the bottom of the arch frame without splicing, and manually matching with a machine to perform downward connection and installation after the arch frame system is pushed to the tunnel face.
Fixedly connecting steel plates 3 by adopting bolt connection are spliced among I-shaped steels of arch beams 1 of each arch; and the transversely arranged I-shaped steel which is nearly horizontal in construction is adopted to connect the arch beams 1 on two sides of each arch to form a pushing support arm of the equipment pushing arch system.
As shown in the figure, the specific installation method is as follows:
first, the connecting ribs 4 are connected to form an arch system. After the single arch frame beam 1 is assembled, the space between the adjacent arch frame beams 1 is arranged, the arch frame beams 1 to be erected are well connected by adopting the steel bar connecting ribs 4, and the positions of the connecting points are welded by a welding machine. The I-steel connection of each arch beam 1 is reinforced by a connecting steel plate 3 through bolts to form a single arch.
The connecting ribs 4 are welded on the outer side surface of the arch truss beam 1, and the arch truss to be erected forms an integral supporting system every 1-1.5 m/root of the connecting ribs. As shown in fig. 1, the connecting ribs 4 are reinforcing bars arranged at intervals on the outer side surface of the arch beam 1, and because the drawing is represented as a small point, the connecting ribs 4 are actually arranged at intervals from one end of the arch beam 1 to the outer side surface of the other end of the arch beam 1 in a welding manner, so that the adjacent arch beams 1 form an integral supporting system.
Then, the mounting of the arm 2 is temporarily pushed. After the arch beams 1 are connected into an integral system through the connecting ribs 4, the single arch beam 1 is supported and connected left and right by the pushing support beam 2, the connecting point adopts a full-welding mode to form a pushing platform of mechanical equipment, the pushing height can be adjusted in the pushing process, and the arch system is prevented from being partially stuck in a hole.
Claims (3)
1. The utility model provides a can push away bow member structure of dress, bow member are used for the tunnel excavation, strut the construction, its characterized in that: the arch center is formed by connecting arch center beams made of I-shaped steel according to the contour of the tunnel through connecting steel plates to form single arch centers, the single arch centers are arranged in parallel and are fixedly connected through connecting ribs to form a movable arch center combination, and pushing support arms which are horizontally arranged are connected between the I-shaped steel on two sides of each single arch center beam in the plane of each single arch center.
2. A push-mountable arch structure according to claim 1, wherein: the end faces of the I-shaped steels forming the arch truss beams are provided with connecting steel plates which are fixedly welded, and the connecting steel plates of the adjacent I-shaped steels are fixedly connected through bolts.
3. A push-mountable arch structure according to claim 1, wherein: the connecting ribs are welded and fixed on the outer side surface of the arch truss beam forming the arch truss combination and are arranged at intervals from one end to the other end of the arch truss beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220881543.9U CN217582162U (en) | 2022-04-15 | 2022-04-15 | Arch frame structure capable of being pushed and installed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220881543.9U CN217582162U (en) | 2022-04-15 | 2022-04-15 | Arch frame structure capable of being pushed and installed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217582162U true CN217582162U (en) | 2022-10-14 |
Family
ID=83544110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220881543.9U Active CN217582162U (en) | 2022-04-15 | 2022-04-15 | Arch frame structure capable of being pushed and installed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217582162U (en) |
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2022
- 2022-04-15 CN CN202220881543.9U patent/CN217582162U/en active Active
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