CN108360560B - Fabricated steel box shed tunnel suitable for emergency rescue and disaster relief and construction method - Google Patents
Fabricated steel box shed tunnel suitable for emergency rescue and disaster relief and construction method Download PDFInfo
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Abstract
The invention discloses an assembly type steel box shed tunnel suitable for emergency rescue and disaster relief and a construction method thereof. The invention solves several key problems which can not be solved by the traditional 'beam + upright post' steel shed tunnel, such as poor adaptability, poor shock resistance, high requirement on the foundation, long construction period, high construction safety risk and the like, and is a brand new protection form.
Description
Technical Field
The invention relates to the technical field of road traffic safety protection, in particular to an assembled steel box shed tunnel suitable for emergency rescue and disaster relief and a construction method. The method is particularly suitable for the technical field of highway rush-to-pass and traffic-guaranteeing construction after geological disasters such as landslide and high-level collapse occur.
Background
In recent years, the earthquake damage of the road after the strong earthquake in the mountainous area is displayed for many times, and the secondary geological disasters such as landslide, high-level collapse and the like have the greatest damage to the road, the greatest difficulty in rush to pass and keeping the traffic and the most profound influence on the damage.
Since the earthquake in Wenchuan, the technical countermeasures against the high collapse have attracted much attention from all parties concerned. In the in-situ restoration reconstruction, a concrete shed tunnel or open cut tunnel is generally adopted, and the emergency rush-to-dredge maintenance stage is very urgent, so that the concrete shed tunnel or open cut tunnel cannot meet the requirements due to long construction period and high construction requirements. In the earthquake of the Lu mountain region, a steel structure shed tunnel is adopted for the first time to deal with high-level collapse and rockfall in the rescue and maintenance of the Lingguan canyon section, and a certain effect is achieved. And then, the steel structure shed tunnel is popularized to other emergency rescue emergency projects, such as the traffic protection after the mountain at the G318 line Anle palace in the county of Yaan city collapses and the traffic protection at the high collapse section of the crossing of the nine-channel impatient pond in Sichuan after the earthquake of Jiuzhai village.
The following is a typical emergency steel shed tunnel construction situation in which Sichuan has been implemented in recent years.
(1) After the Lushan earthquake in 2013, a steel shed tunnel is adopted at a collapse rockfall part of a highway in a Lingguan canyon section, which is used for the first time. The road slope is extremely steep and almost vertical. The rod pieces are transported to the site for welding and assembling, and the method has the characteristics of long site assembling time and high safety risk in the assembling process. The service life is penetrated by stones less than 1 ton.
(2) The collapse of mountain bodies occurs at the G318 line Anle palace in Tian-an city of Yaan city of 22 days 4 months 4 years 2016, 5 people die, 10 people are injured, 4 automobiles are damaged, after a disaster occurs, the slope is firstly subjected to net hanging, guniting and sealing, then a 70m long steel shed hole is adopted as a protection project of a road, and the total time from the preparation processing of a steel structure to the completion of field installation lasts about 25 days.
(3) After 8.8' nine village ditches in 2017 are subjected to earthquakes, mountain bodies at the intersection sections of the magical ponds in the scenic areas from the river nine channels of Zhangzhu towns to the nine village paradises are seriously collapsed, and steel shed holes of about 130m in length are adopted for preventing falling rocks after rush-clearing. And the rod pieces are processed on the field, transported to the field and then welded and assembled on the field. According to statistics, the construction unit moves over 50 welders to work over duty, the erection of the main engineering of the steel shed tunnel is basically completed in about 10 days, and the high-position falling rocks are threatened frequently in the field splicing process.
Above-mentioned steel construction shed tunnel all adopts traditional "crossbeam + stand" form, generally is adapted to the circumstances that the side slope is steeper, the rockfall threat is less, and there is following main problem:
(1) the construction period is long: in the aspect of material organization, the traditional steel shed tunnel is of an amorphous structure, a scheme and material preparation processing are determined only after a disaster occurs, and the time required for material organization and the like is generally more than three days; welding is adopted during field assembly, the field workload is large, the time consumption is long, more welders are needed, and the three examples exceed 10 days.
(2) The construction safety risk is high: the G318 peace palace steel shed tunnel is constructed after the net is hung and the anchor is sprayed, so that the safety risk is controllable; g213, synchronously constructing the rock darby steel corrugated pipe open cut tunnel in the county of Juanshi under the condition that the upper side slope is not processed, and causing safety accidents of personnel injury; the nine-path impatiens balsamina pool steel shed tunnel is constructed under the condition that the side slope is not processed, and the condition that the side slope continues to collapse appears for many times in the construction process, so that operators are threatened. The field examples fully show that the traditional steel shed tunnel is constructed under the condition that the upper slope is not treated, the safety risk is extremely high, but the difficulty is higher and the safety risk is higher if the upper slope is to be treated.
(3) The foundation requirement is high: the traditional steel shed tunnel upright post has higher requirement on the bearing capacity of the foundation, the bearing capacity of the foundation of a common collapse road section is difficult to meet the requirement, and the foundation at the upright post position needs to be processed in a manner of matching with steel pipe piles or grouting and the like.
(4) The adaptability is poor: due to the self characteristics of the beam and upright post type steel structure shed tunnel, the tunnel is only suitable for steep slope sections, and in addition, the lateral thrust resistance is poor. The open cut tunnel of the steel corrugated pipe requires a wide site, the backfill at the periphery of the open cut tunnel requires high, the terrain of a common collapse rockfall section is steep, and the site is narrow.
(5) Poor impact resistance: the structural characteristics of the beam and the upright column determine that the difference of the shock resistance of each unit is large, so that the overall shock resistance of the steel shed tunnel is poor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an assembled steel box shed tunnel suitable for emergency rescue and disaster relief and a construction method, and solves the problems that a traditional beam and upright post protection mode is adopted in a mountain dangerous road section, the construction period is long, the construction safety risk is high, the foundation requirement is high, the adaptability is poor and the impact resistance is poor.
The invention is realized by the following technical scheme:
the assembled steel box shed tunnel comprises a rectangular frame body and buffer armors, wherein protective channel structures with openings at two ends are arranged, a bottom plate for pedestrians or vehicles to pass through is poured on a bottom frame of the rectangular frame body, the bottom plate serves as a road surface of a protective channel, the buffer armors are arranged outside a top frame of the rectangular frame body and a side frame on one side of a backer, and a plurality of steel pipe piles anchored on a roadbed are uniformly distributed on the bottom side of the bottom frame of the rectangular frame body.
The invention solves several key problems which can not be solved by the traditional 'beam + upright post' steel shed tunnel, such as poor adaptability, poor shock resistance, high requirement on the foundation, long construction period, high construction safety risk and the like, and is a brand new protection form. The fabricated steel box shed tunnel has the characteristics of quick emergency response, simplicity and feasibility in construction, short construction time, small construction safety risk, low foundation requirement, strong adaptability, strong impact resistance, good economy and the like, and has important significance for rescue and relief of roads and guarantee of normal operation of the roads in western mountainous areas where natural disasters frequently occur.
Furthermore, the bottom frame, the top frame and the side frames on two sides of the rectangular frame main body are all made of an outer square frame, a scissor support is arranged in the outer square frame, and a transverse support is arranged at the joint of the scissor support.
Furthermore, connectors are arranged at two ends of the rectangular frame main body.
Furthermore, the connectors are respectively arranged at four corners of the end portion of the rectangular frame main body, the connectors are of U-shaped structures, pin holes are formed in the connectors, and the connectors on the two rectangular frame main bodies are connected through pin shafts after being mutually butted when the two rectangular frame main bodies are butted.
Furthermore, the buffering armor is of an arch-shaped structure, and a plurality of buffering support rods are arranged between the arc surface in the arch-shaped structure and the rectangular frame main body.
Furthermore, the arch-shaped structure of the buffer armor is made of polyester series or polypropylene series plastic materials.
Further, the channel dimensions of the rectangular frame body are 5m wide by 5.2m high by 6m long, or 7.5m wide by 5.2m high by 6m long.
Further, the steel pipe pile and the bottom frame are welded or screwed.
The invention is realized by the following another technical scheme:
a construction method of an assembled steel box shed tunnel suitable for emergency rescue and disaster relief comprises the following steps:
step 1) prefabricating a rectangular frame main body structure, wherein the rectangular frame main body is welded or screwed; installing buffer armors and buffer support rods outside the top frame of the rectangular frame main body and the side frame on one side of the backrest;
step 2) adopting mechanical equipment to clean obstacles on the road section where the rectangular frame main body needs to be installed, and arranging and flattening the roadbed;
step 3) determining the set number of the rectangular frame bodies according to the length of the road section on which the rectangular frame bodies are required to be mounted, then hoisting or pushing each assembled section of rectangular frame body to be in place by adopting mechanical equipment, and connecting adjacent sections of rectangular frame bodies through connecting head pin shafts;
step 4), after all the section rectangular frame main bodies are installed in place, constructing a steel pipe pile in a space formed by the shed tunnel and connecting the steel pipe pile with the bottom frame to form a ground anchor system so as to achieve the functions of structural overturn resistance and lateral pushing resistance;
and 5) finally, pouring a bottom plate on the bottom frame of the rectangular frame main body to serve as a road surface of the protective channel, and opening the traffic after the bottom plate is solidified.
Further, the steel pipe pile and the bottom frame are welded or screwed.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention solves several key problems which can not be solved by the traditional 'beam + upright post' steel shed tunnel, such as poor adaptability, poor shock resistance, high requirement on the foundation, long construction period, high construction safety risk and the like, and is a brand new protection form.
(2) The fabricated steel box shed tunnel has the characteristics of quick emergency response, simplicity and feasibility in construction, short construction time, small construction safety risk, low foundation requirement, strong adaptability, strong impact resistance, good economy and the like, and has important significance for rescue and relief of roads and guarantee of normal operation of the roads in western mountainous areas where natural disasters frequently occur.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an assembled steel box shed tunnel suitable for emergency rescue and disaster relief;
FIG. 2 is a schematic structural diagram of a rectangular frame body according to the present invention;
FIG. 3 is an analysis diagram of the adaptive conditions of the fabricated steel box shed tunnel suitable for emergency rescue and disaster relief
Reference numbers and corresponding part names in the drawings:
1-rectangular frame main body, 2-buffer armor, 3-bottom frame, 4-bottom plate, 5-top frame, 6-side frame, 7-steel pipe pile, 8-outer square frame, 9-scissor support, 10-transverse support, 11-connector, 12-pin hole and 13-buffer stay bar.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1-3, the assembled steel box shed tunnel suitable for emergency rescue and disaster relief comprises a rectangular frame body 1 and buffer armors 2, wherein the rectangular frame body 1 is a protective channel structure prefabricated by profile steel and provided with openings at two ends, a bottom plate 4 for pedestrians or vehicles to pass through is poured on a bottom frame 3 of the rectangular frame body 1, the bottom plate 4 is used as a road surface of the protective channel, the buffer armors 2 are arranged outside a top frame 5 and a side frame 6 on one side of a backer, and buffer energy dissipation devices are arranged on the top surface and the side of the steel box shed tunnel to serve as armors of the main structure, and after falling rocks impact the buffer devices, the impact force can be greatly reduced, so that the main structure is protected, and the buffer devices are allowed to be damaged and are easy to replace. And a plurality of steel pipe piles 7 anchored on a roadbed are uniformly distributed on the bottom side of the bottom frame 3 of the rectangular frame main body 1. After the steel box shed tunnel is in place, the steel pipe piles and the steel pipe piles are anchored with the ground in the box, and the requirements of overturn resistance and horizontal push resistance are met. In actual installation and use, if the rectangular frame body 1 protrudes from the roadbed too high according to roadbed conditions, in order to prevent vehicles from entering the protection channel in the rectangular frame body 1, inclined plates (not shown in the figures) connected with the bottom plates 4 are arranged at the two ends of the rectangular frame body 1.
The construction steps of the assembled steel box shed tunnel suitable for emergency rescue and disaster relief comprise: the other components except the structure of the bottom plate 4 are all steel structures and are prefabricated and molded, and all the components are connected by adopting screw connection or pin connection; mechanical equipment (a forklift, an excavator and the like) is adopted to clean the obstacles on the road section where the rectangular frame main body 1 needs to be installed, and the roadbed is arranged to be smooth; designing the number of sections of the required steel box shed tunnel according to the protection range; assembling each section of steel box shed tunnel by using a rectangular frame main body 1, a bottom frame 3, a top frame 5, a side frame 6, an outer square frame 8, a scissors support 9, a transverse support 10 and other components to form a protective main body structure (as shown in figure 2) outside a collapse area; the buffer armor 2 and the buffer stay bar 13 are arranged outside the top frame 5 of the rectangular frame main body 1 and the side frame 6 on one side of the backer, so that the shock resistance of the steel box shed tunnel is greatly improved; hoisting or pushing each assembled section of steel box shed tunnel to be in place by adopting mechanical equipment (a crane, pushing equipment and the like); each adjacent steel box shed tunnel is connected through a connector 11 by a pin shaft; after all the section steel box shed tunnels are installed in place, the steel pipe piles 7 are constructed in the space formed by the shed tunnels and are connected with the bottom frame 3 to form a ground anchor system, so that the anti-overturning and anti-side-pushing effects of the structure are achieved, and the safety of construction personnel can be effectively guaranteed; and finally, pouring a bottom plate 4 on the bottom frame 3 of the rectangular frame main body 1 to serve as a road surface of a protective channel, and opening traffic. The bottom frame 3, the top frame 5 and the side frames 6 on two sides of the rectangular frame body 1 are all made of an external square frame 8, a scissors support 9 is arranged in the external square frame 8, and a transverse support 10 is arranged at the joint of the scissors support 9. Four box section longitudinal beams, a section steel vertical rod, a cross beam and a cross brace form a main body structure of the rectangular frame, and the length of each section is 6 m. All components are shaped, the quantity of each section of component is fixed, the components are connected by bolting which is easy to realize on site, and the construction efficiency can be greatly improved. Rectangular frame main part 1 adopts frame construction, and firstly the cost of manufacture is low, and the preparation is efficient, and another main reason, frame construction absorb with slow with external impact force effectual.
The two ends of the rectangular frame body 1 are provided with connectors 11. The segments are independently assembled in different positions on site, pulled or pushed section by section to be in place, and the segments are connected by pins, so that the segments are convenient to be in place and can adapt to the curve of a flat longitudinal surface. The time of construction operation in a dangerous area can be reduced to the maximum extent.
The connectors 11 are respectively arranged at four corners of the end portion of the rectangular frame main body 1, the connectors 11 are of a U-shaped structure, pin holes 12 are formed in the connectors 11, and when the two rectangular frame main bodies 1 are in butt joint, the connectors 11 on the two rectangular frame main bodies 1 are connected through pin shafts after being in butt joint with each other. The segments are independently assembled in different positions on site, pulled or pushed section by section to be in place, and the segments are connected by pins, so that the segments are convenient to be in place and can adapt to the curve of a flat longitudinal surface. The time of construction operation in a dangerous area can be reduced to the maximum extent. The steel box shed tunnel has enough safety redundancy, partial rod pieces can be damaged after the allowable impact energy is exceeded, and the whole structure is not scattered and cannot be smashed to be flat.
The buffer armor 2 is of an arch-shaped structure, and a plurality of buffer support rods 13 are arranged between the arc surface in the arch-shaped structure and the rectangular frame main body 1.
The bow-shaped structure of the buffer armor 2 is made of polyester series or polypropylene series plastic materials. The bumper is made of polyester series or polypropylene series plastic materials, and the two types of materials are used for manufacturing the automobile bumper, have the advantages of high-efficiency absorption and external impact force buffering, and can effectively prevent the rectangular frame main body 1 from being impacted by large stones.
The channel dimensions of the rectangular frame body 1 are 5m wide by 5.2m high by 6m long, or 7.5m wide by 5.2m high by 6m long. The assembled steel box shed tunnel meets the requirements of single lane and pedestrian or double lane traffic, and adopts clearance of 5m (width) multiplied by 5.2m (height) or 7.5m (width) multiplied by 5.2m (height).
The steel pipe pile 7 and the bottom frame 3 are welded or screwed. According to the construction conditions of a construction site, welding lines cannot be realized, bolt connection can be adopted, and later-stage dismantling is facilitated.
The assembled steel box shed tunnel suitable for emergency rescue and disaster relief solves several key problems which cannot be solved by the traditional beam and upright post steel shed tunnel, such as poor adaptability, poor impact resistance, high requirement on a foundation, long construction period, high construction safety risk and the like, and is a brand new protection form. The fabricated steel box shed tunnel has the characteristics of quick emergency response, simplicity and feasibility in construction, short construction time, small construction safety risk, low foundation requirement, strong adaptability, strong impact resistance, good economy and the like, and has important significance for rescue and relief of roads and guarantee of normal operation of the roads in western mountainous areas where natural disasters frequently occur.
Example 2
As shown in fig. 1-3, a construction method of an assembled steel box shed tunnel suitable for emergency rescue and disaster relief comprises the following steps:
step 1), prefabricating a rectangular frame main body 1 structure, wherein the rectangular frame main body 1 is welded or screwed; a buffer armor 2 and a buffer stay bar 13 are arranged outside a top frame 5 and a side frame 6 at one side of a backer of a rectangular frame body 1;
step 2) adopting mechanical equipment to clean obstacles on the road section needing to be provided with the rectangular frame main body 1, and arranging and flattening the roadbed;
step 3) determining the set number of the rectangular frame main bodies 1 according to the length of the road section on which the rectangular frame main bodies 1 are required to be mounted, then hoisting or pushing each assembled section of the rectangular frame main body 1 to be in place by adopting mechanical equipment, and connecting adjacent sections of the rectangular frame main bodies (1) through a connecting head 11 pin shaft; the segments are independently assembled in different positions on site, pulled or pushed section by section to be in place, and the segments are connected by pins, so that the segments are convenient to be in place and can adapt to the curve of a flat longitudinal surface. The time of construction operation in a dangerous area can be reduced to the maximum extent. The steel box shed tunnel has enough safety redundancy, partial rod pieces can be damaged after the allowable impact energy is exceeded, and the whole structure is not scattered and cannot be smashed to be flat.
Step 4), after all the section rectangular frame main bodies 1 are installed in place, constructing a steel pipe pile 7 in a space formed by the shed tunnel and connecting the steel pipe pile with the bottom frame (3) to form a ground anchor system so as to achieve the functions of structural overturn resistance and lateral pushing resistance;
and 5) finally, pouring a bottom plate 4 on the bottom frame 3 of the rectangular frame main body 1 to serve as a road surface of a protective channel, and opening traffic after the bottom plate 4 is solidified.
The invention relates to a construction method of an assembled steel box shed tunnel suitable for emergency rescue and disaster relief, which solves several key problems which cannot be solved by the traditional beam and upright post steel shed tunnel, such as poor adaptability, poor impact resistance, high requirement on a foundation, long construction period, high construction safety risk and the like, and is a brand new protection form. The fabricated steel box shed tunnel has the characteristics of quick emergency response, simplicity and feasibility in construction, short construction time, small construction safety risk, low foundation requirement, strong adaptability, strong impact resistance, good economy and the like, and has important significance for rescue and relief of roads and guarantee of normal operation of the roads in western mountainous areas where natural disasters frequently occur.
Example 3
As shown in fig. 1-3, a construction method of an assembled steel box shed tunnel suitable for emergency rescue and disaster relief comprises the following steps:
step 6, the buffer armor 2 is installed outside the top frame 5 and the side frame 6 on the side of the backer of the rectangular frame body 1.
And 7) finally pouring a bottom plate 4 on the bottom frame 3 of the rectangular frame main body 1 to serve as a road surface of a protective channel, and opening traffic after the bottom plate 4 is solidified.
In the construction method of the fabricated steel box shed tunnel, the rectangular frame main bodies 1 can be laid on a roadbed, and the adjacent rectangular frame main bodies 1 are connected through the connecting heads 11 through the pin shafts; then uniformly arranging steel pipe piles 7 on the roadbed on which the rectangular frame main body 1 needs to be installed; therefore, danger of workers during installation of the steel pipe pile 7 can be effectively prevented.
In step 6, the buffer armor 2 is attached to the top frame 5 of the rectangular frame body 1 and the outer side frame 6 on the side of the mountain back. Or after the step 1, the rectangular frame main body 1 is transported to a construction site, the buffer armor 2 can be installed on the rectangular frame main body 1, and then the rectangular frame main body 1 is laid, so that the operation and construction of workers on dangerous road sections can be effectively reduced under the condition that no protective measures are provided.
The invention relates to a construction method of an assembled steel box shed tunnel suitable for emergency rescue and disaster relief, which solves several key problems which cannot be solved by the traditional beam and upright post steel shed tunnel, such as poor adaptability, poor impact resistance, high requirement on a foundation, long construction period, high construction safety risk and the like, and is a brand new protection form. The fabricated steel box shed tunnel has the characteristics of quick emergency response, simplicity and feasibility in construction, short construction time, small construction safety risk, low foundation requirement, strong adaptability, strong impact resistance, good economy and the like, and has important significance for rescue and relief of roads and guarantee of normal operation of the roads in western mountainous areas where natural disasters frequently occur.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides an assembled steel case canopy hole suitable for rescue and relief disaster, includes rectangle frame main part (1) and buffering armour (2), its characterized in that: the rectangular frame main body (1) is of a protective channel structure with openings at two ends, which is prefabricated by profile steel, a bottom plate (4) for pedestrians or vehicles to pass through is poured on a bottom frame (3) of the rectangular frame main body (1), the bottom plate (4) is used as a road surface of the protective channel, buffering armors (2) are arranged outside a top frame (5) of the rectangular frame main body (1) and a side frame (6) on one side of a backer, and a plurality of steel pipe piles (7) anchored on a roadbed are uniformly distributed on the bottom side of the bottom frame (3) of the rectangular frame main body (1);
the bottom frame (3), the top frame (5) and the side frames (6) on the two sides of the rectangular frame main body (1) are all made of an outer square frame (8), a scissors support (9) is arranged in the outer square frame (8), and a transverse support (10) is arranged at the joint of the scissors support (9);
connectors (11) are arranged at two ends of the rectangular frame main body (1).
2. The assembled steel box shed tunnel suitable for emergency rescue and disaster relief as claimed in claim 1, wherein: the connector (11) is respectively arranged at four corners of the end part of the rectangular frame main body (1), the connector (11) is of a U-shaped structure, pin holes (12) are formed in the connector (11), and when the two rectangular frame main bodies (1) are in butt joint, the connectors (11) on the two rectangular frame main bodies (1) are connected through pin shafts after being in butt joint with each other.
3. The assembled steel box shed tunnel suitable for emergency rescue and disaster relief as claimed in claim 2, wherein: the buffer armor (2) is of an arch-shaped structure, and a plurality of buffer support rods (13) are arranged between the arc surface in the arch-shaped structure and the rectangular frame main body (1).
4. The assembled steel box shed tunnel suitable for emergency rescue and disaster relief as claimed in claim 3, wherein: the arch-shaped structure of the buffer armor (2) is made of polyester series or polypropylene series plastic materials.
5. The assembled steel box shed tunnel suitable for emergency rescue and disaster relief as claimed in claim 1, wherein: the channel size of the rectangular frame main body (1) is 5m wide, 5.2m high, 6m long, or 7.5m wide, 5.2m high, 6m long.
6. The assembled steel box shed tunnel suitable for emergency rescue and disaster relief as claimed in claim 1, wherein: the steel pipe pile (7) and the bottom frame (3) are welded or screwed.
7. A construction method of an assembled steel box shed tunnel suitable for emergency rescue and disaster relief is characterized by comprising the following steps:
prefabricating a rectangular frame main body (1) structure, wherein the rectangular frame main body (1) is welded or screwed; a buffer armor (2) and a buffer stay bar (13) are arranged outside a top frame (5) of a rectangular frame main body (1) and a side frame (6) on one side of a backer;
mechanical equipment is adopted to clean obstacles on the road section where the rectangular frame main body (1) needs to be installed, and the roadbed is arranged to be smooth;
the method comprises the steps of determining the set number of rectangular frame main bodies (1) according to the length of a road section on which the rectangular frame main bodies (1) are required to be mounted, hoisting or pushing each assembled section of rectangular frame main body (1) to be in place by adopting mechanical equipment, and connecting adjacent sections of rectangular frame main bodies (1) through connecting heads (11) in a pin shaft manner;
after all the section rectangular frame main bodies (1) are installed in place, constructing a steel pipe pile (7) in a space formed by the shed tunnel and connecting the steel pipe pile with the bottom frame (3) to form a ground anchor system so as to achieve the functions of structural overturn resistance and lateral pushing resistance;
and finally, pouring a bottom plate (4) on the bottom frame (3) of the rectangular frame main body (1) to serve as a road surface of a protective channel, and opening traffic after the bottom plate (4) is solidified.
8. The construction method of the assembled steel box shed tunnel suitable for emergency rescue and disaster relief as claimed in claim 7, wherein: the steel pipe pile (7) and the bottom frame (3) are welded or screwed.
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CN109235295B (en) * | 2018-11-16 | 2023-11-28 | 中南大学 | Shed tunnel structure for mountain road and design method thereof |
CN109944495B (en) * | 2019-04-17 | 2024-02-02 | 西南石油大学 | Life tent for potential geological disaster occurrence area and use method |
CN111395215B (en) * | 2020-03-19 | 2021-10-22 | 中铁第一勘察设计院集团有限公司 | UHPC edge angle type assembled buffer layer for rockfall protection shed tunnel |
CN111321678B (en) * | 2020-04-01 | 2024-02-09 | 四川省交通勘察设计研究院有限公司 | Steel shed tunnel structure convenient for rapid forming on transportation site and construction method |
CN115492014A (en) * | 2022-09-28 | 2022-12-20 | 西安世纪金属结构有限公司 | Emergency traffic protection channel for landslide section and construction method thereof |
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JP2016164361A (en) * | 2015-03-06 | 2016-09-08 | 有限会社フジカ | Sidewalk installation type disaster prevention shelter |
CN207878306U (en) * | 2018-02-12 | 2018-09-18 | 四川省交通运输厅交通勘察设计研究院 | A kind of assembled steel case hangar tunnel device suitable for rescue and relief work |
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JP2016164361A (en) * | 2015-03-06 | 2016-09-08 | 有限会社フジカ | Sidewalk installation type disaster prevention shelter |
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