CN217760997U - Combined split mounting type rack for tunnel three-step construction - Google Patents
Combined split mounting type rack for tunnel three-step construction Download PDFInfo
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- CN217760997U CN217760997U CN202221789791.7U CN202221789791U CN217760997U CN 217760997 U CN217760997 U CN 217760997U CN 202221789791 U CN202221789791 U CN 202221789791U CN 217760997 U CN217760997 U CN 217760997U
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Abstract
The utility model discloses a combination pin-connected panel rack for construction of three steps in tunnel, including two bases and the first construction platform of erectting in two base tops, wholly be "door" shape, first construction platform's top surface is the arch, leans on top position department to be provided with the second construction platform that the level extends respectively in first construction platform's both sides, and the top surface of two bases all extends to one side of keeping away from first construction platform and forms third construction platform, is provided with the cat ladder between one of them third construction platform and ground. The utility model discloses the installation is quick and convenient, and first construction platform's top surface is the arch, can increase first construction platform's height, and the convenience is put to tunnel top central point and is under construction, and second construction platform and third construction platform's formation has increased the scope of action of this rack, avoids appearing the construction dead angle.
Description
Technical Field
The utility model relates to a tunnel construction technical field, in particular to a combination pin-connected panel rack for construction of three steps in tunnel.
Background
At present, for domestic soft rock tunnel construction, the excavating method with the widest application range is a three-step construction method, the construction process is simple, and the soft rock tunnel can be organized for quick construction; when the three-step construction method is adopted, the method has the greatest characteristic that the face can be operated in parallel, and further the construction progress of the face is accelerated. When the surrounding rock is loess or other soft rocks, the upper step is generally constructed by reserving core soil during the three-step construction, and the core soil is used as a construction operation platform.
When the face is IV-level surrounding rock or V-level rocky surrounding rock, blasting excavation is generally needed due to high rocky strength of the face, core soil can be cancelled, a construction platform needs to be temporarily erected for excavation and supporting operation during step construction of the face, and the disclosed technology at the present stage is mainly a fixed operation rack which needs large-scale equipment for hoisting and carrying, but hoisting and carrying are difficult, so that the construction progress is not facilitated by three steps, and the construction progress is greatly influenced.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model aims at providing a combination pin-connected panel rack for construction of three steps in tunnel, this combination pin-connected panel rack easy dismounting can solve the problem of current fixed operation rack hoist and mount, transport difficulty.
In order to realize the above-mentioned purpose, the utility model provides a combination pin-connected panel rack for construction of three steps in tunnel, including two bases and erect the first construction platform in two base tops, wholly be "door" shape, first construction platform's top surface is the arch, leans on top position department to be provided with the second construction platform that the level extends respectively, two in first construction platform's both sides the top surface of base all extends to one side of keeping away from first construction platform and forms third construction platform, is provided with the cat ladder between one of them third construction platform and ground.
In the scheme, the method comprises the following steps: the top surface of the first construction platform comprises three H-shaped steel arch frames which are longitudinally arranged along the tunnel, and reinforcing steel meshes are paved between every two adjacent H-shaped steel arch frames, so that the reinforcing steel meshes are favorable for increasing the foot falling area of the first construction platform, and the safety of constructors is ensured.
In the scheme, the method comprises the following steps: the spacing distance between two adjacent I-steel arches is 3-4 m, so that the coverage area of the first construction platform is large enough.
In the scheme, the method comprises the following steps: the bottom both sides of first construction platform all are equipped with the arch, bellied transversal personally submits the inverted trapezoid, are equipped with on the base and supply protruding male card hole, when first construction platform erects on two bases, the protruding card of its bottom goes into in the card hole. The structure is beneficial to ensuring the installation stability of the combined assembled rack and preventing the first construction platform rack and the base from collapsing due to unstable assembly; the cross section of the bulge is in an inverted trapezoid shape with a narrow lower part and a wide upper part, and the lower part of the bulge has a guiding function, so that the bulge can be conveniently and quickly inserted into the clamping hole.
In the scheme, the method comprises the following steps: all transversely be provided with 2 ~ 4 card holes on every base, position's regulation about first construction platform can be realized through inserting the arch in different card holes. The first construction platform can realize fine adjustment of left and right positions and can meet construction requirements under special conditions.
In the scheme, the method comprises the following steps: and an inclined strut is arranged between the third construction platform and the base, so that the structural strength of the third construction platform is improved, and the shock resistance of the third construction platform is improved.
The beneficial effects of the utility model are that:
the first construction platform is directly erected on the two bases, so that the installation is quick and convenient; and the top surface of the first construction platform is arched, so that the height of the first construction platform can be increased, and the construction is conveniently carried out on the center position of the top of the tunnel.
The formation of second construction platform and third construction platform all is favorable to increasing the effect scope of this rack, avoids appearing the construction dead angle for constructor can accomplish the construction of whole tunnel arch face.
Because first construction platform directly puts on two bases, so first construction platform accessible is controlled little range and is removed in order to adjust its left and right sides position, perhaps changes the first construction platform of not unidimensional according to the tunnel width, so this rack application scope is wide, application prospect is big.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic top view of a first construction platform.
Fig. 3 is an enlarged schematic view at a in fig. 1.
Detailed Description
As shown in figures 1-3, a combined split mounting type rack for tunnel three-step construction mainly comprises two bases and a first construction platform erected above the two bases, and the whole rack is in a door shape.
The top surface of first construction platform is the arch, leans on top position department to be provided with the second construction platform that the level extends respectively in first construction platform's both sides, and the top surface of two bases all extends to one side of keeping away from first construction platform and forms third construction platform, is provided with the cat ladder between one of them third construction platform and ground.
Preferably, the top surface of the first construction platform 2 comprises three h-shaped steel arches 21 arranged longitudinally along the tunnel, and a reinforcing mesh 22 is laid between two adjacent h-shaped steel arches 21, wherein the reinforcing mesh 22 is beneficial to increasing the foot drop area of the first construction platform 2 and ensuring the safety of constructors.
Preferably, the distance between two adjacent h-shaped steel arches 21 is 3-4 m to ensure that the coverage of the first construction platform 2 is sufficiently large.
Preferably, the two sides of the bottom of the first construction platform 2 are both provided with protrusions 23, the cross section of each protrusion 23 is in an inverted trapezoid shape, the two bases 1 are both provided with clamping holes 11 for the protrusions 23 to be inserted into, and when the first construction platform 2 is erected on the two bases 1, the protrusions 23 at the bottom of the first construction platform are clamped into the corresponding clamping holes 11. The structure is beneficial to ensuring the installation stability of the combined split mounting type rack and preventing the first construction platform rack 2 and the base 1 from being unstably split and collapsing; the cross section of the bulge 23 is in an inverted trapezoid with a narrow lower part and a wide upper part, and the lower part of the bulge has a guiding function, so that the bulge can be conveniently and quickly inserted into the clamping hole 11.
Preferably, each base 1 is transversely provided with 2-4 clamping holes 11, and the first construction platform 2 can realize the adjustment of the left and right positions by inserting the protrusions 23 into the different clamping holes 11. The first construction platform 2 can realize fine adjustment of left and right positions and can meet construction requirements under special conditions.
Preferably, an inclined strut 5 is arranged between the third construction platform 4 and the base 1, so that the structural strength of the third construction platform 4 is improved, and the shock resistance of the third construction platform is improved.
Claims (6)
1. The utility model provides a combination pin-connected panel rack for construction of three steps in tunnel which characterized in that: including two bases (1) and erect first construction platform (2) in two bases (1) tops, wholly be "door" shape, the top surface of first construction platform (2) is the arch, leans on top position department to be provided with second construction platform (3) that the level extends respectively, two in the both sides of first construction platform (2) the top surface of base (1) all extends to one side of keeping away from first construction platform (2) and forms third construction platform (4), is provided with the cat ladder between one of them third construction platform (4) and ground.
2. The combined assembled rack for tunnel three-step construction according to claim 1, wherein: the top surface of the first construction platform (2) comprises three H-shaped steel arches (21) arranged longitudinally along the tunnel, and reinforcing mesh (22) are laid between every two adjacent H-shaped steel arches (21).
3. The combined assembled rack for tunnel three-step construction according to claim 2, wherein: the spacing distance between two adjacent H-shaped steel arches (21) is 3-4 m.
4. The combined assembled rack for tunnel three-step construction according to claim 1, wherein: the bottom both sides of first construction platform (2) all are equipped with arch (23), the transversal trapezoidal of personally submitting of arch (23) is equipped with on base (1) and supplies protruding (23) male card hole (11), and when first construction platform (2) erect on two bases (1), the card is gone into in card hole (11) to protruding (23) card of its bottom.
5. The combined assembled type rack for tunnel three-step construction according to claim 4, wherein: all transversely be provided with 2 ~ 4 card holes (11) on every base (1), the regulation of position about can realizing through inserting arch (23) in different card holes (11) in first construction platform (2).
6. The combined assembled rack for tunnel three-step construction according to claim 1, wherein: and an inclined strut (5) is arranged between the third construction platform (4) and the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221789791.7U CN217760997U (en) | 2022-07-12 | 2022-07-12 | Combined split mounting type rack for tunnel three-step construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221789791.7U CN217760997U (en) | 2022-07-12 | 2022-07-12 | Combined split mounting type rack for tunnel three-step construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217760997U true CN217760997U (en) | 2022-11-08 |
Family
ID=83872904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221789791.7U Active CN217760997U (en) | 2022-07-12 | 2022-07-12 | Combined split mounting type rack for tunnel three-step construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217760997U (en) |
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2022
- 2022-07-12 CN CN202221789791.7U patent/CN217760997U/en active Active
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