CN217055200U - Middle-size and small-size tunnel strutting arrangement - Google Patents
Middle-size and small-size tunnel strutting arrangement Download PDFInfo
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- CN217055200U CN217055200U CN202220208612.XU CN202220208612U CN217055200U CN 217055200 U CN217055200 U CN 217055200U CN 202220208612 U CN202220208612 U CN 202220208612U CN 217055200 U CN217055200 U CN 217055200U
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Abstract
The utility model provides a middle-size and small-size tunnel strutting arrangement, including door type support, set up a plurality of straight pull rods between two liang of door type supports, its characterized in that door type support comprises the arc steel check roof beam at top and the vertical steel check roof beam of both sides, wherein: the steel lattice beam comprises a triangular framework formed by three steel bars and connecting steel bars arranged on each surface of the triangular framework, horizontal connecting plates with through holes are respectively arranged at the lower end of the arc-shaped steel lattice beam and the upper end and the lower end of the vertical steel lattice beam, and bolts and nuts are arranged in the through holes. The support intensity of arc steel grider and vertical steel grider is effectively promoted, even if be convenient for the transportation, bolt and nut on the accessible horizontal connection board again carry out fast assembly in the scene, greatly improve the convenience of production, transportation, installation, guarantee tunnel safety, fundamentally solves current steel bow member and is difficult to the construction, stock and steel bow member are connected insecure, the atress condition subalternation problem.
Description
Technical Field
The utility model relates to a tunnel construction technical field specifically is a middle-size and small-size tunnel strutting arrangement.
Background
The support of the tunnel directly influences normal construction progress and quality, particularly soft and weak interlayers and IV and V-type surrounding rocks, once the support is untimely, safety problems such as collapse and the like are easily caused, the construction progress is influenced, the engineering quality is influenced, the investment and the cost are increased, the life safety of operators is seriously threatened, at present, for the support of the diversion tunnel, a hanging net and spraying concrete, an anchor rod support, an I-shaped steel arch frame and the like are generally adopted, wherein the I-shaped steel arch frame is heavy, is inconvenient to install on site, cannot be effectively jointed with a rock surface of an excavated chamber, and meanwhile, the I-shaped steel has high processing difficulty, the structure of the I-shaped steel can be damaged when a bent part is processed, so that the bearing capacity is greatly weakened. The measures are influenced by construction technology, geology and construction conditions, the problems that the thickness of sprayed concrete cannot be guaranteed, anchor rod support and steel arch frame connection are not firm and the like exist, the problems that a cavern is deformed and collapsed and the like easily occur, the treatment difficulty after collapse is high, the construction period is prolonged, the investment is increased and the like are caused. Therefore, a tunnel supporting device which has good function, strong bearing capacity, convenient installation and rapid construction is needed.
SUMMERY OF THE UTILITY MODEL
Arch support structure to prior art existence is heavy, be not convenient for transport and installation, with the unable effective joint of rock face, bearing capacity poor, be connected insecurely, the easy emergence cavern warp, the scheduling problem that collapses, the utility model provides a middle-size and small-size tunnel strutting arrangement.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a middle-size and small-size tunnel strutting arrangement, includes door type support, sets up a plurality of straight pull rods between two liang of door type supports, and its characterized in that door type support comprises the arc steel lattice roof beam at top and the vertical steel lattice roof beam of both sides, wherein: the steel lattice beam comprises a triangular framework consisting of three steel bars, and connecting steel bars arranged on each face of the triangular framework, the lower end of the arc-shaped steel lattice beam and the upper end and the lower end of the vertical steel lattice beam are respectively provided with a horizontal connecting plate with a through hole, a bolt and a nut are arranged in the through hole, so that the supporting strength of the arc-shaped steel lattice beam and the vertical steel lattice beam is improved through the triangular framework and the connecting steel bars arranged on each face of the triangular framework, meanwhile, the arc-shaped steel lattice beam and the vertical steel lattice beam are separately arranged to facilitate transportation, and the arc-shaped steel lattice beam and the vertical steel lattice beam can be conveniently assembled on site into a portal type support through the bolt and the nut on the horizontal connecting plate.
The connecting reinforcing steel bars are continuously or alternately arranged on each surface of the triangular framework, and each connecting reinforcing steel bar is arranged in a V shape and oppositely arranged between every two reinforcing steel bars so as to improve the connecting strength.
The arc-shaped steel lattice beams are arranged into a circular arc shape or two semi-circular arc shapes, triangular sleeves with horizontal plates at the end parts are respectively arranged at the connecting ends between the two semi-circular arc shapes, through holes are formed in the horizontal plates, and bolts and nuts are arranged in the through holes so that the two arc-shaped steel lattice beams can be assembled into a whole on site through the bolts and the nuts.
The vertical steel lattice beams are arranged to be a plurality of different heights, the connecting ends of every two vertical steel lattice beams are respectively provided with a triangular sleeve, the end part of each triangular sleeve is provided with a horizontal plate, a through hole is formed in each horizontal plate, and a bolt and a nut are arranged in each through hole so that the vertical steel lattice beams with different heights can be assembled into a whole on site through the bolts and the nuts.
The outer sides of the door-shaped supports are connected with anchor rods at intervals, the outer ends of the anchor rods are inserted into an excavated rock stratum, and the length of each anchor rod is 300-450cm, so that the door-shaped supports can be fixed in an excavated cavity from the outer sides, and the supporting and protecting effects are improved.
The length of the straight pull rod is 100-300cm so as to improve the connection strength of every two portal supports and further efficiently support the excavated cavern.
The utility model has the advantages of it is following and effect: by adopting the technical scheme, the support strength of the arc-shaped steel lattice beams and the vertical steel lattice beams can be conveniently improved through the triangular framework and the connecting steel bars arranged on each surface of the triangular framework, meanwhile, the arc-shaped steel lattice beams and the vertical steel lattice beams are in a structure of separate arrangement and field assembly, even if the transportation is facilitated, the rapid assembly can be carried out on site through the bolts and the nuts on the horizontal connecting plates, the convenience of production, transportation and installation is greatly improved, then the anchor rods are connected with the excavated rock stratum, and the flat straight pull rods between every two door-shaped supports are connected, so that concrete arranged on the anchor rods can form a tunnel space support whole together, the safety of the tunnel is guaranteed, and the problems that the existing steel arch is difficult to construct, the anchor rods are not firmly connected with the steel arch, the stress condition is poor and the like are fundamentally solved.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a side partial structural view of fig. 1.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model provides a middle-size and small-size tunnel strutting arrangement, including door type support 1, set up a plurality of straight pull rods 2 between two liang of door type supports 1, wherein: the portal-shaped support 1 is composed of an arc-shaped steel lattice beam 11 at the top and vertical steel lattice beams 12 at two sides, the steel lattice beam comprises a triangular framework composed of three reinforcing steel bars 5 and connecting reinforcing steel bars 6 arranged on each surface of the triangular framework, horizontal connecting plates 4 with through holes are respectively arranged at the lower end of the arc-shaped steel lattice beam 11 and the upper and lower ends of the vertical steel lattice beam 12, and bolts and nuts are arranged in the through holes to improve the supporting strength of the arc-shaped steel lattice beam 11 and the vertical steel lattice beam 12 through the triangular framework and the connecting reinforcing steel bars 6 arranged on each surface of the triangular framework;
the connecting steel bars 6 are arranged on each surface of the triangular framework at intervals, each connecting steel bar is V-shaped and oppositely arranged between every two steel bars so as to improve the connecting strength;
the arc-shaped steel lattice beams 11 are arranged into two semi-circular arcs, the connecting ends between the two semi-circular arcs are respectively provided with a triangular sleeve 7 of which the end part is provided with a horizontal plate 9, the horizontal plate 9 is provided with a through hole, and a bolt and a nut 8 are arranged in the through hole, so that the two semi-circular arc-shaped steel lattice beams are assembled into a whole on site through the bolt and the nut 8;
the vertical steel grid beams 12 are arranged in a plurality of different heights, the connecting ends of every two vertical steel grid beams are respectively provided with a triangular sleeve 7 with a horizontal plate 9 at the end part, the horizontal plate 9 is provided with a through hole, and a bolt and a nut 8 are arranged in the through hole, so that the vertical steel grid beams 12 in different heights can be assembled into a whole on site through the bolt and the nut 8;
the outer side of the door-shaped support is connected with anchor rods 3 at intervals, the outer ends of the anchor rods 3 are inserted into an excavated rock stratum, and the length of each anchor rod 3 is 300cm, so that the door-shaped support 1 is fixed in an excavated cavity from the outer side, and the supporting and protecting effects are improved; the length of the straight pull rod 2 is 100cm, so that the connection strength of every two door-shaped supports is improved, and the excavated cavern is efficiently supported.
Claims (6)
1. The utility model provides a middle-size and small-size tunnel strutting arrangement, includes door type support, sets up a plurality of straight pull rods between two liang of door type supports, and its characterized in that door type support comprises the arc steel lattice roof beam at top and the vertical steel lattice roof beam of both sides, wherein: the steel lattice beam comprises a triangular framework formed by three steel bars and connecting steel bars arranged on each surface of the triangular framework, horizontal connecting plates with through holes are respectively arranged at the lower end of the arc-shaped steel lattice beam and the upper end and the lower end of the vertical steel lattice beam, and bolts and nuts are arranged in the through holes.
2. The medium and small tunnel supporting device according to claim 1, wherein the connecting bars are continuously or intermittently disposed on each face of the triangular frame, and each connecting bar is V-shaped and disposed oppositely between two bars.
3. The support device for small and medium-sized tunnels according to claim 1, wherein the arc-shaped steel lattice beam is in the shape of a circular arc or two semi-circular arcs, the connecting ends between the two semi-circular arcs are respectively provided with triangular sleeves with horizontal plates at the end parts, the horizontal plates are provided with through holes, and bolts and nuts are arranged in the through holes.
4. The middle-small tunnel supporting device as recited in claim 1, wherein the vertical steel lattice beams are arranged in a plurality of different heights, and the connecting ends of every two vertical steel lattice beams are respectively provided with a triangular sleeve with a horizontal plate at the end part, the horizontal plate is provided with a through hole, and the through hole is provided with a bolt and a nut.
5. The middle-small tunnel supporting device as claimed in claim 1, wherein the outside of the door-shaped support is connected with anchor rods at intervals, the outer ends of the anchor rods are inserted into the excavated rock stratum, and the length of the anchor rods is 300-450 cm.
6. The device as claimed in claim 1, wherein the length of the straight tie rod is 100-300 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220208612.XU CN217055200U (en) | 2022-01-26 | 2022-01-26 | Middle-size and small-size tunnel strutting arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220208612.XU CN217055200U (en) | 2022-01-26 | 2022-01-26 | Middle-size and small-size tunnel strutting arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217055200U true CN217055200U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220208612.XU Active CN217055200U (en) | 2022-01-26 | 2022-01-26 | Middle-size and small-size tunnel strutting arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217055200U (en) |
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2022
- 2022-01-26 CN CN202220208612.XU patent/CN217055200U/en active Active
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