CN111893864B - Shed tunnel suitable for long-span through-type steel truss arch bridge - Google Patents
Shed tunnel suitable for long-span through-type steel truss arch bridge Download PDFInfo
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- CN111893864B CN111893864B CN202010609341.4A CN202010609341A CN111893864B CN 111893864 B CN111893864 B CN 111893864B CN 202010609341 A CN202010609341 A CN 202010609341A CN 111893864 B CN111893864 B CN 111893864B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D12/00—Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D2/00 - E01D11/00
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Abstract
The utility model relates to a bridge protection technical field discloses a shed tunnel suitable for long-span through-put type steel truss arch bridge. The shed tunnel comprises mounting beams arranged on two sides of a bridge and a plurality of steel frames which are sequentially arranged forwards along a tunnel portal, supporting columns are arranged among a bridge abutment, an arch support and the mounting beams, two ends of each steel frame are correspondingly supported on the mounting beams on the two sides of the bridge, the outer side and the inner side of each two adjacent steel frames are correspondingly detachably connected with an outer-layer protection plate and an inner-layer protection plate, and a protection net is arranged between the mounting beams and the arch support; the impact force generated by falling rocks is prevented from being directly transmitted to the bridge through the shed tunnel, so that the safety of the bridge is ensured; this is disclosed realizes the modularization installation of outer guard plate and inlayer guard plate through a plurality of steelframes, and the guard plate is changed to the shed tunnel installation of being convenient for and when being convenient for impaired, and outer guard plate and inlayer guard plate have realized the double-deck protection of bridge, ensure the safety of bridge, and this disclosure still is provided with the protection network based on the installation roof beam, and further avoiding falling rocks causes the injury to the bow member.
Description
Technical Field
The utility model relates to a bridge protection technical field especially relates to a shed tunnel suitable for long-span through-put type steel truss arched bridge.
Background
With the rapid development of railway construction in China, the railway construction relates to each region in the country. The railway construction is limited by the terrain, wherein the newly built railway in the hard mountain area mostly passes through V-shaped gullies, the hillside is steep, and dangerous rocks and rockfall are distributed mostly. As shown in fig. 1, when a railway is constructed on the terrain, a tunnel needs to be excavated through two hills on both sides of a V-shaped valley, and a long-span through-type steel truss arch bridge is constructed between the tunnel mouths of the two hills. When an arch bridge is built, a bridge abutment 2 is arranged below a tunnel portal, an arch support 3 is arranged below the bridge abutment 2, an arch support 4 is installed through the arch support 3, the bridge 1 is constructed on the basis of the arch support 4, and finally the construction of the long-span through-type steel truss arch bridge is completed.
After the arch bridge is constructed, rockfall risk analysis needs to be carried out on a mountain, the bridge 1 connected with a tunnel portal is often a place with the highest rockfall risk, and the railway bridge 1 generally has the characteristics of high speed, high-density operation and high safety requirements, so that once rockfall impact occurs, great economic loss is caused, and even disastrous consequences are caused, and a protective structure needs to be arranged aiming at the arch bridge to prevent rockfall from damaging the arch bridge.
Disclosure of Invention
In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a shed tunnel suitable for a long-span through-put type steel truss arch bridge, which protects the long-span through-put type steel truss arch bridge.
The utility model provides a shed tunnel suitable for long-span centre-supporting formula steel truss arched bridge, including set up in the installation roof beam of bridge both sides and along the tunnel portal a plurality of steelframes that arrange forward in proper order, abutment, hunch seat and bow member with all be provided with the support column between the installation roof beam, the both ends of steelframe correspond to support in the bridge both sides on the installation roof beam, adjacent two the outside and the inboard correspondence of steelframe can be dismantled and be connected with outer guard plate and inlayer guard plate, be provided with the protection network between installation roof beam and the hunch seat.
Optionally, the tip outside of steelframe does not set up outer guard plate, the inboard inlayer guard plate of tip of steelframe has the swash plate to outside downwardly extending, the lower extreme of swash plate extends to on the installation roof beam.
Optionally, a horizontally arranged pressing plate extends outwards from the lower end of the inclined plate, and the upper end of the protective net is arranged between the pressing plate and the mounting beam in a turning manner.
Optionally, a buffer seat is arranged between the supporting column and the mounting beam, the buffer seat includes an upper substrate and a lower substrate, a sleeve is arranged on the lower portion of the upper substrate, a guide pillar in sliding fit with the sleeve is arranged on the upper portion of the lower substrate, a first compression spring is arranged between the upper substrate and the lower substrate, a slider is arranged on the upper portion of the guide pillar, and a second compression spring is arranged between the slider and the lower substrate.
Optionally, the steelframe includes the web, the outside end and the medial extremity of web correspond and set up outer flange board and interior flange board, outer guard plate with the inlayer guard plate correspond with outer flange board with interior flange board is connected.
Optionally, a reinforcing pipe is connected between two adjacent webs.
Optionally, a first connecting plate extends from the web plate, a second connecting plate extends from the end of the reinforcing pipe, and the first connecting plate is connected with the second connecting plate through a bolt.
Optionally, the steelframe including arrange in the leg portion on the installation roof beam and with the vault part that leg portion upper end is connected, leg portion with be provided with connected node between the vault part, connected node include with the uncovered complex U template of side of steelframe, still including arrange in the planking in the outer flange board outside with the inboard inner panel of interior flange board, the U template the planking reaches the inner panel passes through bolted connection.
Optionally, a plurality of protection steel frames are further arranged in front of the steel frames, and the diameter of each protection steel frame is larger than that of each steel frame.
Optionally, the pressure plate is connected with the mounting beam through an expansion bolt.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages: the supporting columns are arranged on the abutment, the arch support and the arch truss, the beams are fixedly arranged on two sides of the bridge through the supporting columns, the steel frame is arranged through the mounting beams, a shed hole is prevented from being occupied in the space of the bridge, impact force generated by falling rocks is transmitted to the mounting beams through the shed hole and then is transmitted to the abutment, the arch support and the arch truss in a dispersing mode through the mounting beams, the impact force generated by the falling rocks is prevented from being directly transmitted to the bridge through the shed hole, and the safety of the bridge is ensured; this is disclosed realizes the modularization installation of outer guard plate and inlayer guard plate through a plurality of steelframes, and the guard plate is changed to the shed tunnel installation of being convenient for and when being convenient for impaired, and outer guard plate and inlayer guard plate have realized the double-deck protection of bridge, ensure the safety of bridge, and this disclosure still is provided with the protection network based on the installation roof beam, and further avoiding falling rocks causes the injury to the bow member.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic view of a long span through-type steel truss arch bridge in the prior art;
FIG. 2 is a schematic view of an installation beam based on an arch bridge layout;
FIG. 3 is a side view of a shed tunnel provided by an embodiment of the present disclosure;
FIG. 4 is a front view of a shed tunnel provided by embodiments of the present disclosure;
FIG. 5 is a schematic diagram of an inclined plate arranged at the end part of a steel frame;
FIG. 6 is an enlarged view of a portion of area A of FIG. 4;
FIG. 7 is a perspective view of the steel frame;
FIG. 8 is a schematic view of the connection of a steel frame with a reinforced pipe;
fig. 9 is a schematic view of the buffer base.
Wherein, 1, a bridge; 2. an abutment; 3. an arch support; 4. an arch frame; 5. mounting a beam; 6. a steel frame; 61. a web; 62. an outer flange plate; 63. an inner flange plate; 64. a first connecting plate; 7. a support pillar; 8. an outer layer protection plate; 9. an inner layer protection plate; 10. a protective net; 11. a sloping plate; 12. pressing a plate; 13. a buffer seat; 131. an upper substrate; 132. a lower substrate; 133. a sleeve; 134. a guide post; 135. a first compression spring; 136. a slider; 137. a second compression spring; 14. a reinforcement tube; 141. a second connecting plate; 15. connecting the nodes; 151. a U-shaped plate; 152. an outer plate; 153. an inner plate; 16. and (5) protecting the steel frame.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
As shown in fig. 1 to 4, the shed tunnel suitable for long-span through-put type steel truss arch bridge that this disclosure provides, including setting up in the installation roof beam 5 of bridge 1 both sides and along a plurality of steelframes 6 that the tunnel portal arranged forward in proper order, abutment 2, all be provided with support column 7 between archway 4 and the installation roof beam 5, the both ends of steelframe 6 correspond to support on the installation roof beam 5 of bridge 1 both sides, the outside and the inboard correspondence of two adjacent steelframes 6 can be dismantled and be connected with outer guard plate 8 and inlayer guard plate 9, be provided with protection network 10 between installation roof beam 5 and the archway 3.
Compared with the prior art, the bridge abutment 2, the arch support 3 and the arch frame 4 are provided with the supporting columns 7, the beams 5 are fixedly arranged on two sides of the bridge 1 through the supporting columns 7, the steel frame 6 is arranged through the mounting beams 5, the space occupied by the bridge 1 is prevented from being occupied by arranging shed holes, impact force generated by falling rocks is transmitted to the mounting beams 5 through the shed holes and then is transmitted to the bridge abutment 2, the arch support 3 and the arch frame 4 in a dispersing mode through the mounting beams 5, the impact force generated by the falling rocks is prevented from being directly transmitted to the bridge 1 through the shed holes, and the safety of the bridge 1 is ensured; this is disclosed realizes the modularization installation of outer guard plate 8 and inlayer guard plate 9 through a plurality of steelframes 6, and the guard plate is changed when the shed tunnel installation of being convenient for and being convenient for is impaired, and outer guard plate 8 and inlayer guard plate 9 have realized the double-deck protection of bridge 1, ensure the safety of bridge 1, and this disclosure still is provided with protection network 10 based on installation roof beam 5, and further avoiding the rock fall causes the injury to bow member 4.
In some embodiments, as shown in fig. 4 and 5, the outer protection plate 8 is not disposed on the outer side of the end portion of the steel frame 6, the inner protection plate 9 on the inner side of the end portion of the steel frame 6 extends obliquely downward to the outer side to form a sloping plate 11, and the lower end of the sloping plate 11 extends to the mounting beam 5.
Among the above-mentioned technical scheme, the middle part and the upper portion of shed hole set up double-deck protection architecture, steelframe 6 of lower part only sets up inlayer guard plate 9, outer guard plate 8 does not set up, when large-scale stone that falls strikes the shed hole, it is broken to have probably pounding outer guard plate 8, subsequent some small-size stones that fall may follow the breach and get into between outer guard plate 8 and the inlayer guard plate 9, the small-size stone that falls this moment can slide to the lower part from shed hole upper portion, again through the uncovered landing play in the outside of swash plate 11's direction, finally small-size stone that falls into the valley by the outside of installation roof beam 5, can not cause the weight burden to the shed hole, can not fall to influence the vehicle on bridge 1 yet current.
In some embodiments, as shown in fig. 4 and 5, a horizontally arranged pressing plate 12 extends outward from the lower end of the sloping plate 11, and the upper end of the protection net 10 is folded and arranged between the pressing plate 12 and the mounting beam 5.
Among the above-mentioned technical scheme, when installing swash plate 11, swash plate 11's upper end and the welding of inlayer guard plate 9 or carry out bolted connection, swash plate 11's lower extreme is provided with clamp plate 12, it fixes clamp plate 12 and installation roof beam 5 through expansion bolts, clamp plate 12 can be fixed the upper end of protection network 10, the location and the installation of protection network 10 of so being convenient for, the lower extreme of protection network 10 also can adopt fixed clamp plate's mode to fix it with hunch 3, and make shed hole and protection network 10 top-down an organic whole arrange, this kind of fixed mode makes protection network 10 more be close to the vertical state, the upper end of avoiding protection network 10 is in the state of inboard slope, thereby can be better block falling rocks, avoid falling rocks to cause the damage to bow member 4.
In some embodiments, as shown in fig. 9, a buffer seat 13 is disposed between the supporting column 7 and the mounting beam 5, the buffer seat 13 includes an upper substrate 131 and a lower substrate 132, a sleeve 133 is disposed at a lower portion of the upper substrate 131, a guide post 134 slidably engaged with the sleeve 133 is disposed at an upper portion of the lower substrate 132, a first compression spring 135 is disposed between the upper substrate 131 and the lower substrate 132, a slider 136 is disposed at an upper periphery of the guide post 134, and a second compression spring 137 is disposed between the slider 136 and the lower substrate 132.
Among the above-mentioned technical scheme, the stone that falls when assaulting the shed tunnel, buffer base 13 has played certain power of unloading effect, buffer base 13 is when the atress, it sinks with the relative guide pillar 134 of sleeve 133 to go up base plate 131, first compression spring 135 is compressed and is carried out the one-level buffering, sleeve 133 continues to sink and contradicts to slider 136, second compression spring 137 is compressed and is carried out the second grade buffering, reduce the impact force that the stone that falls produced through above-mentioned buffering form, avoid installing roof beam 5, support column 7, abutment 2, abutment 3 and bow member 4 rigid connection receive the impact force and cause the damage to the connected node, ensure connected node's stability.
In some embodiments, as shown in fig. 6, 7 and 8, the steel frame 6 includes a web 61, an outer flange plate 62 and an inner flange plate 63 are disposed at an outer end and an inner end of the web 61, respectively, and the outer layer protection plate 8 and the inner layer protection plate 9 are connected to the outer flange plate 62 and the inner flange plate 63, respectively.
Among the above-mentioned technical scheme, steelframe 6 is the I-steel form, and outer flange board 62 is used for being connected with outer guard plate 8, and interior flange board 63 is used for being connected with inlayer guard plate 9, and the connection form can adopt bolted connection mode, is convenient for carry out dismouting and change to outer guard plate 8 and inlayer guard plate 9.
In some embodiments, as shown in fig. 7 and 8, a reinforcing tube 14 is connected between two adjacent webs 61.
Among the above-mentioned technical scheme, the reinforcing pipe 14 has strengthened steelframe 6 at fore-and-aft connection stability for a plurality of steelframes 6 constitute an integral stress structure, have increased the shock resistance intensity of shed tunnel.
In some embodiments, as shown in fig. 7 and 8, a first connecting plate 64 extends from the web 61, a second connecting plate 141 extends from the end of the reinforced pipe 14, and the first connecting plate 64 is connected to the second connecting plate 141 by bolts.
Among the above-mentioned technical scheme, the welding has first connecting plate 64 in advance on steelframe 6's web 61, has second connecting plate 141 in advance at the tip of reinforced pipe 14, accomplishes first connecting plate 64 and second connecting plate 141's high-speed joint through the bolt, improves the structural stability of shed tunnel, has accelerated the construction progress simultaneously.
In some embodiments, as shown in fig. 4 and 6, the steel frame 6 includes a leg portion disposed on the mounting beam 5 and a dome portion connected to an upper end of the leg portion, a connection node 15 is disposed between the leg portion and the dome portion, the connection node 15 includes a U-shaped plate 151 openly fitted to a side of the steel frame 6, and further includes an outer plate 152 disposed outside the outer flange plate 62 and an inner plate 153 disposed inside the inner flange plate 63, and the U-shaped plate 151, the outer plate 152, and the inner plate 153 are connected by bolts.
Among the above-mentioned technical scheme, with steelframe 6 top-down split into the multipart, the dismouting and the transportation of being convenient for, connected node 15 is connected shank and vault part as transition connection spare, and wherein U template 151 and steelframe 6's side cooperation, planking 152 and the cooperation of outer flange board 62, and inner panel 153 and the cooperation of interior flange board 63 accomplish the connection fast through the bolt.
In some embodiments, as shown in fig. 3, a protective steel frame 16 is further disposed in front of the plurality of steel frames 6, and the diameter of the protective steel frame 16 is larger than that of the steel frame 6.
Among the above-mentioned technical scheme, constitute the brim of a hat structure of perk between protection steelframe 16 and the steelframe 6, the brim of a hat structure of perk carries on spacingly to falling rocks, avoids falling rocks to the bridge 1 by the front end landing of shed tunnel on, has strengthened the protection to bridge 1.
The specific working process of one embodiment of the disclosure is as follows:
s1, mounting the supporting pillar 7 based on the abutment 2, the abutment 3 and the arch frame 4, disposing the buffer seat 13 on the upper end of the supporting pillar 7, fixing the lower substrate 132 of the buffer seat 13 on the upper end of the supporting pillar 7, disposing the slider 136 on the periphery of the guide post 134 of the lower substrate 132, disposing the second compression spring 137 between the slider 136 and the lower substrate 132, disposing the upper substrate 131 above the lower substrate 132, fitting the sleeve 132 on the lower part of the upper substrate 131 with the guide post 134 on the upper part of the lower substrate 132, disposing the first compression spring 135 between the upper substrate 131 and the lower substrate 132, and disposing the mounting beams 5 on both sides of the bridge 1 based on the upper substrate 131;
s2, the steel frame 6 is composed of a web 61, an outer flange plate 62 and an inner flange plate 63, the steel frame 6 is divided into a leg part and a vault part, and the leg part and the vault part are connected through a connecting node 15 to form the steel frame 6; the connecting node 15 is composed of a U-shaped plate 151, an outer plate 152 and an inner plate 153, the U-shaped plate 151 is matched with the side edge of the steel frame 6 in an open mode, the outer plate 152 is arranged on the outer side of the outer flange plate 62, the inner plate 153 is arranged on the inner side of the inner flange plate 63, and the U-shaped plate 151, the outer plate 152 and the inner plate 153 are connected through bolts;
correspondingly installing two ends of a steel frame 6 on the installation beams 5 on two sides of the bridge 1, arranging a reinforcing pipe 14 between two adjacent steel frames 6, welding a first connecting plate 64 on a web 61 of the steel frame 6, welding a second connecting plate 141 at the end part of the reinforcing pipe 14, and connecting the first connecting plate 64 with the second connecting plate 141 by bolts;
arranging a protective steel frame 16 in front of the steel frames 6, wherein the diameter of the protective steel frame 16 is larger than that of the steel frame 6;
s3, installing the outer-layer protection plate 8 between the outer sides of two adjacent steel frames 6, and installing the inner-layer protection plate 9 between the inner sides of two adjacent steel frames 6; the outer-layer protection plate 8 is connected with an outer flange plate 62 of the steel frame 6 through bolts, and the inner-layer protection plate 9 is connected with an inner flange plate 63 of the steel frame 6 through bolts;
only an inner protection plate 9 is installed at the lower end of the steel frame 6, the upper end of a sloping plate 11 is connected with the inner protection plate 9, a pressing plate 12 is arranged at the lower end of the sloping plate 11, the upper end of a protective net 10 is arranged between the pressing plate 12 and an installation beam 5 in a turnover way, the pressing plate 12 is connected with the installation beam 5 by expansion bolts,
and S4, folding and fixing the lower end of the protective net 10 on the arch base 3 by adopting a fixed pressing plate.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The shed tunnel suitable for the long-span through-type steel truss arch bridge is characterized by comprising mounting beams (5) arranged on two sides of a bridge (1) and a plurality of steel frames (6) sequentially arranged into a tunnel along a tunnel portal, wherein supporting columns (7) are arranged between an abutment (2), an arch support (3), an arch support (4) and the mounting beams (5), two ends of each steel frame (6) are correspondingly supported on the mounting beams (5) on two sides of the bridge (1), the outer sides and the inner sides of two adjacent steel frames (6) are correspondingly detachably connected with an outer-layer protection plate (8) and an inner-layer protection plate (9), and a protection net (10) is arranged between each mounting beam (5) and the corresponding arch support (3);
an outer protection plate (8) is not arranged on the outer side of the end part of the steel frame (6), an inclined plate (11) obliquely and downwardly extends towards the outer side of an inner protection plate (9) on the inner side of the end part of the steel frame (6), and the lower end of the inclined plate (11) extends onto the mounting beam (5);
the lower end of the inclined plate (11) extends outwards to form a pressing plate (12) which is horizontally arranged, and the upper end of the protective net (10) is arranged between the pressing plate (12) and the mounting beam (5) in a turnover mode.
2. Shed tunnel suitable for long-span through-put steel truss arch bridge according to claim 1, characterized in that a buffer seat (13) is arranged between the supporting column (7) and the mounting beam (5), the buffer seat (13) comprises an upper base plate (131) and a lower base plate (132), a sleeve (133) is arranged at the lower part of the upper base plate (131), a guide post (134) slidably engaged with the sleeve (133) is arranged at the upper part of the lower base plate (132), a first compression spring (135) is arranged between the upper base plate (131) and the lower base plate (132), a slider (136) is arranged at the upper periphery of the guide post (134), and a second compression spring (137) is arranged between the slider (136) and the lower base plate (132).
3. Shed tunnel suitable for a long-span through-put steel truss arch bridge according to claim 1, characterized in that the steel frame (6) comprises a web (61), an outer flange plate (62) and an inner flange plate (63) are correspondingly arranged at the outer end and the inner end of the web (61), and the outer protection plate (8) and the inner protection plate (9) are correspondingly connected with the outer flange plate (62) and the inner flange plate (63).
4. A shed tunnel adapted for a long span through-put steel truss arch bridge as claimed in claim 3, wherein a reinforcing pipe (14) is connected between two adjacent webs (61).
5. A shed tunnel suitable for a long-span through-put steel truss arch bridge as claimed in claim 4, wherein the web (61) is provided with a first connecting plate (64) extending thereon, the end of the reinforcing pipe (14) is provided with a second connecting plate (141) extending thereon, and the first connecting plate (64) and the second connecting plate (141) are connected by bolts.
6. Shed tunnel suitable for a long-span through-put steel truss arch bridge according to claim 3, characterized in that the steel frame (6) comprises leg parts arranged on the mounting beam (5) and a vault part connected with the upper ends of the leg parts, a connection node (15) is arranged between the leg parts and the vault part, the connection node (15) comprises a U-shaped plate (151) which is in open fit with the side edge of the steel frame (6), and further comprises an outer plate (152) arranged on the outer side of the outer flange plate (62) and an inner plate (153) arranged on the inner side of the inner flange plate (63), wherein the U-shaped plate (151), the outer plate (152) and the inner plate (153) are connected through bolts.
7. Shed tunnel suitable for long-span through-put steel trussed arch bridges according to claim 1, characterized in that a plurality of steel frames (6) are further provided with a protective steel frame (16) in front of them, the diameter of the protective steel frame (16) being larger than the diameter of the steel frame (6).
8. Shed tunnel suitable for a long-span through-put steel trussed arch bridge according to claim 1, characterized in that the pressure plate (12) is connected with the mounting beam (5) by expansion bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010609341.4A CN111893864B (en) | 2020-06-29 | 2020-06-29 | Shed tunnel suitable for long-span through-type steel truss arch bridge |
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| CN202010609341.4A CN111893864B (en) | 2020-06-29 | 2020-06-29 | Shed tunnel suitable for long-span through-type steel truss arch bridge |
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| CN111893864B true CN111893864B (en) | 2022-03-22 |
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| CN204572001U (en) * | 2015-02-12 | 2015-08-19 | 西南交通大学 | For the shed hole structure at mountain tunnel hole |
| JP2018066249A (en) * | 2016-10-17 | 2018-04-26 | 喜一 外山 | Elevated bicycle road serving as evacuation facility |
| CN108517795A (en) * | 2018-05-25 | 2018-09-11 | 中铁第勘察设计院集团有限公司 | Railroad bridge protecting canopy frame structure and its construction method |
| CN108842641A (en) * | 2018-07-26 | 2018-11-20 | 赵宁雨 | Steel construction energy dissipating hangar tunnel |
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