CN212053683U - Tunnel portal construction platform for limited space - Google Patents
Tunnel portal construction platform for limited space Download PDFInfo
- Publication number
- CN212053683U CN212053683U CN202020616097.XU CN202020616097U CN212053683U CN 212053683 U CN212053683 U CN 212053683U CN 202020616097 U CN202020616097 U CN 202020616097U CN 212053683 U CN212053683 U CN 212053683U
- Authority
- CN
- China
- Prior art keywords
- panel
- hinge
- tunnel portal
- combined steel
- platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
A tunnel portal construction platform for a limited space comprises a plurality of stand columns, a plurality of mutually parallel main cross beams are arranged above the stand columns, a Bailey frame is arranged above the main cross beams, a combined steel panel is arranged above the Bailey frame, and a protective railing is arranged on the side edge of the combined steel panel; the combined steel panel is provided with a hinge groove on one side of the combined steel panel which is not provided with the protective railing, the hinge groove is hinged with a hinge panel, one end of the hinge panel is arranged in the hinge groove through a hinge shaft, and the other end of the hinge panel is lapped on the soil platform surface of the tunnel portal. By adopting the structure, the problems of small area and inconvenient construction of the hole earthwork platform in a special construction environment can be solved, and convenient conditions are provided for hole construction at valley gully positions.
Description
Technical Field
The utility model relates to a tunnel construction field, specific is a tunnel entrance to a cave construction platform for restricted space.
Background
The portal is the exposure part at tunnel both ends, also is the supporting construction who links lining in the hole and the outer cutting of entrance to a cave, and its effect is the safety of guaranteeing entrance to a cave side slope and the stability of uphill, draws off the earth's surface flowing water, reduces entrance to a cave soil stone excavation volume. For tunnel entrance construction of tunnel entrance with tunnel entrance located in valley gully, steep terrain and large natural gradient, an operation platform (such as a muck truck and a tank truck) is provided for construction machinery by means of an entrance soil platform and a stacking place used as part of construction materials is provided domestically, and then tunnel construction is developed. When the vertical height of the tunnel portal from the toe is larger, the volume of earth and stones for constructing the earth platform is larger, the transportation, filling and compaction difficulty is large, the economy is poor, particularly, the tunnel portal which is difficult to arrange on the tunnel portal pavement and is adjacent to the existing traffic line is difficult to adapt to the field requirement due to the limitation of site conditions.
Disclosure of Invention
The utility model aims to solve the technical problem that a tunnel entrance to a cave construction platform for limited space is provided, the entrance to a cave earthwork platform area that can solve in the special construction environment is little, the inconvenient problem of construction, provides convenient condition for the entrance to a cave construction of valley gully department.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a tunnel portal construction platform for a limited space comprises a plurality of stand columns, a plurality of mutually parallel main cross beams are arranged above the stand columns, a Bailey frame is arranged above the main cross beams, a combined steel panel is arranged above the Bailey frame, and a protective railing is arranged on the side edge of the combined steel panel;
the combined steel panel is provided with a hinge groove on one side of the combined steel panel which is not provided with the protective railing, the hinge groove is hinged with a hinge panel, one end of the hinge panel is arranged in the hinge groove through a hinge shaft, and the other end of the hinge panel is lapped on the soil platform surface of the tunnel portal.
In the preferred scheme, the lower ends of the stand columns are arranged on a foundation, and the foundation is arranged on the ground which is lower than the earthwork platform surface of the tunnel portal.
In the preferable scheme, a plurality of upright posts are connected with the inclined strut through parallel connection.
In the preferred scheme, a round log is padded in a gap between one end, far away from the combined steel panel, of the hinged panel and the earth platform surface of the tunnel portal.
The utility model provides a tunnel entrance to a cave construction platform for restricted space through adopting above-mentioned structure, has following beneficial effect:
(1) safe and reliable:
the structure is used as a platform system, the stress is clear, the upper load is transmitted to the steel upright posts through the Bailey frames and the main cross beams, the steel upright posts are transmitted to the foundation through the reinforced concrete foundation, the steel upright posts are connected into a whole through the parallel inclined struts, and the integral stability of the structure is good;
(2) economic and efficient:
the platform has the advantages of simple structure, quick assembly and disassembly, high material repeated utilization rate and capability of greatly reducing the construction cost;
(3) the adaptability is strong:
the structural arrangement of the platform can conform to the situation of site topography, the structural size, the plane arrangement and the like can be flexibly changed, the design of 'overhanging + inclined strut' of a main beam at part of the position can be smoothly connected with the original ground, and the platform has stronger adaptability to tunnel construction with limited hole space;
(4) the erection cost is low:
the hinged panel can reduce the height of the platform under the condition of long slope length, and the inclination angle of the hinged panel can be adjusted according to the slope.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the vertical structure of the present invention.
Fig. 2 is the structural schematic diagram of the bailey truss of the present invention.
Fig. 3 is a schematic view of the vertical structure of the utility model after being installed in place.
Fig. 4 is a schematic view of the overlooking structure of the utility model after being installed in place.
In the figure: basis 1, stand 2, parallel connection 3, bracing 4, main beam 5, bailey frame 6, combination steel panels 7, articulated groove 701, guard rail 8, tunnel portal 9, articulated panel 10, articulated shaft 11, log 12.
Detailed Description
As shown in fig. 1-2, a tunnel portal construction platform for a limited space comprises a plurality of columns 2, a plurality of mutually parallel main beams 5 are arranged above the plurality of columns 2, bailey frames 6 are arranged above the main beams 5, combined steel panels 7 are arranged above the bailey frames 6, and guard rails 8 are arranged on the side edges of the combined steel panels 7;
the combined steel panel 7 is provided with a hinge groove 701 on one side without the protective barrier 8, the hinge groove 701 is hinged with a hinge panel 10, one end of the hinge panel 10 is arranged in the hinge groove 701 through a hinge shaft 11, and the other end of the hinge panel is lapped on the earthwork platform surface of the tunnel portal 9.
In the preferred scheme, the lower end of the upright post 2 is arranged on a foundation 1, and the foundation 1 is arranged on the ground with the height lower than the earthwork platform surface of the tunnel portal 9.
In a preferable scheme, a plurality of upright posts 2 are connected with one another through parallel connection 3 and inclined struts 4.
In the preferable scheme, a round wood 12 is padded in a gap between one end of the hinged panel 10, which is far away from the combined steel panel 7, and the earthwork platform surface of the tunnel portal 9.
The utility model discloses a step is built to platform as follows:
1) measuring and paying off, and positioning the specific position of the foundation (1) on the ground at a low position according to the field condition and the design requirement;
2) constructing a foundation 1, wherein a connecting piece of the foundation 1 and an upright post 2 is required in the construction process;
3) after the foundation 1 is constructed, the upright posts 2 are installed;
4) while the upright posts 2 are installed, a parallel connection 3 and an inclined strut 4 are installed among the upright post 2 groups;
5) after the upright post 2, the parallel connection 3 and the inclined strut 4 are installed, the main beam 5 and the Bailey truss 6 are erected, then the combined steel panel 7 is erected (the guard rail 8 is installed on the combined steel panel 7 in advance), and after the combined steel panel 7 is installed, the platform is formed and can be put into use.
The hinged panel 10 is turned over before use, so that the end of the hinged panel far away from the platform is lapped on a slope surface, and a log 12 is arranged in a gap between the slope surface and the hinged panel 10.
Claims (4)
1. The utility model provides a tunnel portal construction platform for restricted space, includes many stands (2), characterized by: a plurality of main beams (5) which are parallel to each other are arranged above the plurality of upright posts (2), a bailey frame (6) is arranged above the main beams (5), a combined steel panel (7) is arranged above the bailey frame (6), and a protective railing (8) is arranged on the side edge of the combined steel panel (7);
the combined steel panel (7) is provided with a hinge groove (701) on one side of the combined steel panel which is not provided with the protective railing (8), the hinge groove (701) is hinged with a hinge panel (10), one end of the hinge panel (10) is arranged in the hinge groove (701) through a hinge shaft (11), and the other end of the hinge panel is lapped on the earthwork platform surface of the tunnel portal (9).
2. A tunnel portal construction platform for confined spaces as claimed in claim 1 wherein: the lower end of the upright post (2) is arranged on the foundation (1), and the foundation (1) is arranged on the ground which is lower than the earthwork platform surface of the tunnel portal (9).
3. A tunnel portal construction platform for confined spaces as claimed in claim 1 wherein: and a plurality of the upright columns (2) are connected through the parallel connection (3) and the inclined strut (4).
4. A tunnel portal construction platform for confined spaces as claimed in claim 1 wherein: and round wood (12) is padded in a gap between one end of the hinged panel (10) far away from the combined steel panel (7) and the earth platform surface of the tunnel portal (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020616097.XU CN212053683U (en) | 2020-04-22 | 2020-04-22 | Tunnel portal construction platform for limited space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020616097.XU CN212053683U (en) | 2020-04-22 | 2020-04-22 | Tunnel portal construction platform for limited space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212053683U true CN212053683U (en) | 2020-12-01 |
Family
ID=73509521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020616097.XU Active CN212053683U (en) | 2020-04-22 | 2020-04-22 | Tunnel portal construction platform for limited space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212053683U (en) |
-
2020
- 2020-04-22 CN CN202020616097.XU patent/CN212053683U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101092850A (en) | Method and installation for rising building or historical building / cluster of historical building integrally | |
| CN112411391A (en) | Single-column capping beam steel pipe column Bailey beam construction supporting system and construction method thereof | |
| CN212053683U (en) | Tunnel portal construction platform for limited space | |
| CN217078829U (en) | Position structure of bridge pile foundation and subway tunnel | |
| CN203821248U (en) | Steel pipe arch main arch assembling supporting system | |
| CN216586578U (en) | Supporting structure in foundation | |
| CN201722700U (en) | Infrastructure of tower crane | |
| CN214784021U (en) | Be suitable for assembled steel gabion protection view wall on highway side slope | |
| CN113389558B (en) | TBM (Tunnel boring machine) starting platform for narrow space and construction method thereof | |
| CN211815605U (en) | Construction device for pile column type pier tie beam and capping beam | |
| CN213112246U (en) | Manual hole digging pile lifting portal frame for rectangular slide-resistant pile | |
| CN205296206U (en) | Tower cane foundation | |
| CN204401462U (en) | For the support of pier prestressed cap beam with extra length Construction Supporting System in water | |
| CN210177919U (en) | Civil engineering construction support | |
| CN210712576U (en) | Multi-hoop truss supporting bailey bracket for cast-in-situ large-span box girder | |
| CN210263847U (en) | Stride and establish portable construction platform on subway U type groove | |
| CN207143914U (en) | A kind of relief well assistance platform sets up structure | |
| CN111119222A (en) | Assembling device for ultra-high voltage direct current transmission line iron tower in alpine region | |
| CN215210559U (en) | Anti-scouring large-span continuous beam stress support | |
| CN216739685U (en) | A envelope that is used for hierarchical side slope construction period packway | |
| CN109519009A (en) | The top-down construction method of the above structure in the ground of large-scale pump house | |
| CN210684767U (en) | Combined assembly foundation for ultra-high voltage direct current transmission line iron tower in alpine region | |
| CN113387277B (en) | Railway shed tunnel T-shaped beam hoisting construction method | |
| CN218293064U (en) | Edge safety protective guard for foundation pit of pipe-jacking working well | |
| CN215857734U (en) | Subway foundation pit supporting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |