CN214737302U - Main-tower-free cable-stayed bridge suitable for wide and deep canyon - Google Patents
Main-tower-free cable-stayed bridge suitable for wide and deep canyon Download PDFInfo
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- CN214737302U CN214737302U CN202023323945.7U CN202023323945U CN214737302U CN 214737302 U CN214737302 U CN 214737302U CN 202023323945 U CN202023323945 U CN 202023323945U CN 214737302 U CN214737302 U CN 214737302U
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Abstract
The utility model discloses a no king-tower cable-stay bridge suitable for wide deep gorge belongs to road and bridge construction field. The cable-stayed bridge comprises a main beam, a stay cable, a tunnel anchor, an anchoring body and inclined shafts, wherein the two inclined shafts are arranged on two sides of a tunnel portal, and the tunnel portals at two ends are provided with the two inclined shafts; the anchoring body is arranged at the front end of the inclined shaft close to the tunnel portal, and a groove matched with the tunnel anchor is arranged in the anchoring body; the tunnel anchor is fixed in the anchor body; one end of the stay cable is fixedly connected to the main beam, and the other end of the stay cable is connected with the tunnel anchor; the main beam is erected between canyons. The stay cable anchor is anchored into the upper body through the tunnel anchor to provide force required for suspending and fixing the main beam, the main tower is prevented from being arranged in the wide and deep canyon, the difficulty of bridge construction between the wide and deep canyons is further reduced, and meanwhile the engineering cost of bridge construction between the wide and deep canyons is reduced.
Description
Technical Field
The utility model relates to a road and bridge construction field, concretely relates to no king-tower cable-stay bridge suitable for wide deep gorge.
Background
The construction of national infrastructure of tunnels, mountain highways, railways and the like increasingly enter western mountain areas. Due to the complex topography of western mountainous areas, more and more 'mountain-canyon-mountain' situations occur, and lines must cross in a 'tunnel-bridge-tunnel' manner. The mountain body is thick and the canyon is steep, so that the mountain body is often in a bridge-tunnel connection mode. When the width of the canyon is not large, a conventional bridge is often adopted for crossing; the line is often controlled by elevation and the like, the crossing width in a steep gorge section is large, and the crossing is difficult by adopting a conventional bridge mode; cable-stayed bridges and suspension bridges are one of the common forms of large-span bridges; if a cable-stayed bridge mode is adopted, a main tower of the bridge is often arranged at the bottom end of the canyon, the height of the main tower is extremely large, and the construction is difficult; if a conventional suspension bridge mode is adopted, on one hand, anchoring needs to be arranged, on the other hand, a bridge tower still needs to be arranged, and the bridge tower is difficult to arrange and difficult to construct.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the difficulty is erect to cable-stay bridge king-tower between wide deep gorge, aim at provides one kind can effectively solve the no king-tower cable-stay bridge and the construction scheme who is applicable to wide deep gorge of above-mentioned problem.
The utility model discloses a following technical scheme realizes:
a non-main-tower cable-stayed bridge suitable for a wide deep canyon comprises a main beam, a stay cable, a tunnel anchor, an anchoring body and inclined shafts, wherein the two inclined shafts are arranged on two sides of a tunnel portal, and the tunnel portal at two ends is provided with two inclined shafts;
the anchoring body is arranged at the front end of the inclined shaft close to the tunnel portal, and a groove matched with the tunnel anchor is arranged in the anchoring body;
the tunnel anchor is fixed in the anchor body;
one end of the stay cable is fixedly connected to the main beam, and the other end of the stay cable is connected with the tunnel anchor;
the main beam is of a concrete structure, a steel structure or a reinforced concrete combined structure. The main beam structure can be replaced by other structures capable of meeting the construction requirements.
The stay cable is formed by high-strength steel strands. Other materials which can meet the use requirement of the sling can replace the high-strength steel strand.
The main beam is erected between canyons. Compare in the building structure of cable-stay bridge between present wide deep gorge, need set up the main tower and come to provide the support for the girder, this kind of method not only can prolong construction cycle, and its construction degree of difficulty still can increase the construction cost of engineering greatly simultaneously, the utility model relates to a cable-stay bridge structure of no main tower through the cooperation construction of tunnel anchor and anchor body, can be effectual go into the mountain with the suspension cable anchor in, for the girder provides to hang fixed required pulling force, this kind of structure and construction method not only can shorten the time limit for a project can also effectual reduction engineering cost. The utility model is suitable for a bridge span is in the gorge cable-stay bridge of 300m ~ 1000m within range.
The further technical scheme is as follows:
the inclined shaft extends downwards from a mountain body beside the tunnel opening to the plane where the bottom surface of the tunnel is located, and the tail end of the inclined shaft is perpendicular to the tunnel and is communicated with the tunnel. The inclined shaft and the tunnel provide a construction site for anchoring operation together, and meanwhile, the construction personnel, equipment, materials and the like can conveniently pass through the inclined shaft and the tunnel.
Further: the inclined shaft comprises a body formed by construction through a drilling and blasting method.
Further: the tunnel anchor is anchored with a plurality of stay cables, and the other ends of the stay cables are sequentially fixedly connected to the main beam at equal intervals; the stay cable passes through in the tunnel anchor income mountain body for the stay cable can provide pulling force for the suspension of girder is fixed, ensures cable-stay bridge's basic service function.
Further: the stay cable is connected with the main beam by adopting an end anchorage device.
Further: the tunnel anchor comprises an anchoring structure and an anchor seat structure, wherein the anchor seat structure is fixed in the anchoring body, and the anchoring structure and the anchor seat structure are connected through a bolt group. The anchor structure and the anchor seat structure are fixed together by the bolt group, so that the stability of the tunnel anchor can be improved, and the reliability of hanging and fixing the main beam by the stay cable is further enhanced.
Further: the anchoring structure sequentially comprises a pipe protecting section, a connecting section, a cable hoop and an anchoring section from front to back;
further: the cable hoop is arranged at the tail end of the connecting section;
further: epoxy mortar is filled in the anchoring section;
further: the anchor section end is provided with the bolt hole.
Further: the anchor seat structure comprises an anchor backing plate and a reinforcing rib, wherein the anchor backing plate is connected with the tail end of the anchoring section, and a bolt hole is also formed in the position corresponding to the position of the bolt hole in the anchoring section; the arrangement of the reinforcing ribs can increase the strength of the anchor seat structure, so that the anchor seat structure can bear larger tensile force.
Further: the reinforcing rib is vertically arranged below the anchor backing plate.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. the utility model relates to a no main tower cable-stay bridge and construction scheme suitable for wide deep gorge, anchor the stay cable into the upper part internal through the tunnel anchor and provide the girder and hang the required power of fixing, avoided setting up the main tower in wide deep gorge, and then reduced the degree of difficulty of bridge construction between wide deep gorge, reduced the engineering cost of bridge construction between wide deep gorge simultaneously;
2. the utility model relates to a no king-tower cable-stay bridge and construction scheme suitable for wide deep gorge, this scheme can effectual utilization tunnel structure, has avoided offering the construction passageway alone, can effectively shorten construction cycle and can reduce engineering cost.
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 view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the end anchor of the present invention;
FIG. 4 is a schematic view of the tunnel anchor mounting structure of the present invention;
fig. 5 is a schematic view of the anchor block structure of the present invention.
Reference numbers and corresponding part names in the drawings:
1-main beam, 2-stay cable, 3-tunnel anchor, 4-anchor body, 5-inclined shaft, 6-end anchor, 31-anchor structure, 32-anchor seat structure, 33-bolt group, 311-protecting pipe section, 312-connecting section, 313-cable hoop, 314-anchor section, 321-anchor backing plate and 322-reinforcing rib.
Detailed Description
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 the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example (b):
as shown in fig. 1 to 5, the operating principle of the non-main-tower cable-stayed bridge suitable for the wide and deep canyon is as follows: through setting up tunnel anchor 3 with the stay cable 2 anchor go into the mountain internal, cooperate with the tunnel anchor through the anchor body 4 that sets up in the mountain internal, fix to stay cable 2 and hang fixedly for girder 1 and provide the pulling force, guarantee no main tower cable-stay bridge's basic service function to replace the cable-stay bridge king-tower, this method can reduce the construction degree of difficulty and engineering cost. The inclined shaft 5 and the tunnel are combined to provide a working space for anchoring operation, and meanwhile, convenience is brought to the passing of constructors, equipment, materials and the like. The main-tower-free cable-stayed bridge comprises a main beam 1, stay cables 2, tunnel anchors 3, anchoring bodies 4 and inclined shafts 5, wherein the two inclined shafts 5 are arranged on two sides of a tunnel portal, and the tunnel portals at two ends are provided with the two inclined shafts 5;
the anchoring body 4 is arranged at the front end of the inclined shaft 5 close to the tunnel portal, and a groove matched with the tunnel anchor 3 is arranged in the anchoring body 4;
the tunnel anchor 3 is fixed in the anchoring body 4;
one end of the stay cable 2 is fixedly connected to the main beam 1, and the other end of the stay cable 2 is connected with the tunnel anchor 3;
the main beam 1 is erected between canyons.
The inclined shaft 5 extends downwards from a mountain beside the tunnel opening to the plane where the bottom surface of the tunnel is located, and the tail end of the inclined shaft 5 is perpendicular to the tunnel and is communicated with the tunnel.
The inclined shaft 5 comprises a body formed by construction through a drilling and blasting method.
The tunnel anchor 3 is anchored with a plurality of stay cables 2, and the other ends of the stay cables 2 are sequentially fixedly connected to the main beam 1 at equal intervals;
the stay cable 2 is connected with the main beam 1 by adopting an end anchorage device 6.
The tunnel anchor 3 comprises an anchoring structure 31 and an anchor seat structure 32, the anchor seat structure 32 is fixed in the anchoring body 4, and the anchoring structure 31 and the anchor seat structure 32 are connected through a bolt group 33.
The anchoring structure 31 comprises a pipe protecting section 311, a connecting section 312, a cable hoop 313 and an anchoring section 314 in sequence from front to back;
the cable clamp 313 is arranged at the end of the connecting section 312;
the anchoring section 314 is filled with epoxy mortar;
the anchoring section 314 is provided with bolt holes at the tail end.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A main-tower-free cable-stayed bridge suitable for wide and deep canyons is characterized by comprising a main beam (1), stay cables (2), tunnel anchors (3), anchor bodies (4) and inclined shafts (5), wherein the two inclined shafts (5) are arranged on two sides of a tunnel portal, and the tunnel portals at two ends are provided with the two inclined shafts (5);
the anchoring body (4) is arranged at the front end of the inclined shaft (5) close to the tunnel portal, and a groove matched with the tunnel anchor (3) is arranged in the anchoring body (4);
the tunnel anchor (3) is fixed in the anchor body (4);
one end of the stay cable (2) is fixedly connected to the main beam (1), and the other end of the stay cable (2) is connected with the tunnel anchor (3);
the main beam (1) is erected between canyons.
2. The cable-stayed bridge without main tower suitable for the wide and deep canyon as claimed in claim 1, wherein the inclined shaft (5) extends from the mountain beside the tunnel entrance obliquely downwards to the plane of the bottom surface of the tunnel, and the end of the inclined shaft (5) is perpendicular to the tunnel and is communicated with the tunnel.
3. The cable-stayed bridge without main tower suitable for the wide and deep canyon of claim 2, wherein the slant well (5) comprises a body formed by a drilling and blasting method.
4. The main-tower-free cable-stayed bridge suitable for the wide and deep canyon as claimed in claim 1, wherein the tunnel anchor (3) is anchored with a plurality of stay cables (2), and the other ends of the stay cables (2) are sequentially fixedly connected to the main beam (1) at equal intervals;
the stay cable (2) is connected with the main beam (1) by adopting an end anchorage device (6).
5. The cable-stayed bridge without main tower suitable for the wide and deep canyon according to claim 4, wherein the tunnel anchor (3) comprises an anchoring structure (31) and an anchor seat structure (32), the anchor seat structure (32) is fixed in the anchoring body (4), and the anchoring structure (31) and the anchor seat structure (32) are connected by a bolt group (33).
6. The cable-stayed bridge without main tower suitable for the wide and deep canyon of claim 5, wherein the anchoring structure (31) comprises a tube protecting section (311), a connecting section (312), a cable hoop (313) and an anchoring section (314) in sequence from front to back;
the cable hoop (313) is arranged at the tail end of the connecting section (312);
the anchoring section (314) is filled with epoxy mortar;
the tail end of the anchoring section (314) is provided with a bolt hole.
7. The main-tower-free cable-stayed bridge suitable for the wide and deep canyon as claimed in claim 6, wherein the anchor seat structure (32) comprises an anchor backing plate (321) and a reinforcing rib (322), the anchor backing plate (321) is connected with the tail end of the anchoring section (314), and bolt holes are also formed at positions corresponding to the positions of the bolt holes on the anchoring section (314);
the reinforcing ribs (322) are vertically arranged below the anchor backing plate (321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023323945.7U CN214737302U (en) | 2020-12-31 | 2020-12-31 | Main-tower-free cable-stayed bridge suitable for wide and deep canyon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023323945.7U CN214737302U (en) | 2020-12-31 | 2020-12-31 | Main-tower-free cable-stayed bridge suitable for wide and deep canyon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214737302U true CN214737302U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023323945.7U Active CN214737302U (en) | 2020-12-31 | 2020-12-31 | Main-tower-free cable-stayed bridge suitable for wide and deep canyon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214737302U (en) |
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2020
- 2020-12-31 CN CN202023323945.7U patent/CN214737302U/en active Active
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