CN214882879U - Tie bar replacing structure of swallow-type tie bar arch bridge - Google Patents
Tie bar replacing structure of swallow-type tie bar arch bridge Download PDFInfo
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- CN214882879U CN214882879U CN202120097903.1U CN202120097903U CN214882879U CN 214882879 U CN214882879 U CN 214882879U CN 202120097903 U CN202120097903 U CN 202120097903U CN 214882879 U CN214882879 U CN 214882879U
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Abstract
The utility model relates to a structure is changed to tie rod of swallow-shaped tie rod arch bridge, including main arch and limit arch, the limit arch is located the both ends that the owner encircleed, the below that the limit was encircleed is provided with the limit and encircles the support, is provided with interim tie rod between the both ends that the owner was encircleed, the one end that the owner was encircleed was kept away from to the limit arch is connected with tie rod anchor section, the below of tie rod anchor section is provided with the support frame that is used for supporting tie rod anchor section. The utility model discloses can support steadily to the limit arch and main arch, change the tie rod under the prerequisite that keeps the limit arch and main arch safety and stability, realize that controllable, adjustable, can look into, changeable swallow formula tie rod arched bridge tie rod is changed.
Description
Technical Field
The utility model belongs to the technical field of the bridge overhauls and specifically relates to a structure is changed to tie rod of swallow's formula tie rod arch bridge.
Background
The flying swallow type tied arch bridge is one of tied arch bridges, the side span is provided with an auxiliary arch which looks like a flying swallow, so the flying swallow type tied arch bridge is called as a flying swallow type tied arch bridge, the main arch part is a half-through type arch bridge, the horizontal thrust of the structure is balanced through a horizontal inhaul cable anchored at the arch end of the side span auxiliary arch, and the flying swallow type tied arch bridge has the advantages of strong site adaptability, attractive appearance, good spanning capability and the like.
The flying swallow type tied arch bridge is shown in figure 1, and comprises a main arch 2, an edge arch 4, a permanent anchoring section 3 and a tied rod 1, wherein the tied rod 1 is used for balancing the horizontal thrust of the main arch 2 and the edge arch 4. The flying swallow type tied arch bridge is built in many areas, the building time is mostly in the beginning of the last 21 st century of the 20 th century, but due to the limitation of design ideas of the construction years, the tie bars 1 of part of the flying swallow type tied arch bridge are of an unchangeable structure, the anchoring sections of the tie bars 1 are directly poured in the permanent anchoring sections 3, and the tie bars 1 are anchored through the engaging force of concrete and the tie bars 1. In the use process, the service life of the tie bar 1 is not consistent with that of a bridge, the tie bar 1 needs to be replaced for many times in the whole service life of the bridge, and the anchor position of the originally designed tie bar 1 is cast into the permanent anchor section 3, so that the later-stage tie bar replacement is extremely difficult.
According to the general design Specification for highway bridges and culverts (JTG D60-2015), the service life of the tie bars is 20 years, and as the tie bars reach the design service life, the replacement scheme of the tie bars of the flying swallow type tied arch bridge needs to be researched, and a tie bar replacement theory and a tie bar replacement method are provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a structure is changed to tie rod of swallow-shaped tie rod arch bridge is provided, realize controllably, change swallow-shaped tie rod arch bridge's tie rod adjustably.
The utility model provides a technical scheme that its technical problem adopted is: a tie bar replacing structure of a swallow-shaped tie bar arch bridge comprises a main arch and side arches, wherein the side arches are positioned at two ends of the main arch, side arch supports are arranged below the side arches, a temporary tie bar is arranged between two ends of the main arch, one end, far away from the main arch, of each side arch is connected with a tie bar anchoring section, and a supporting frame used for supporting the tie bar anchoring section is arranged below the tie bar anchoring section.
Further, the tie bar anchoring section is concrete.
Further, the support frame is a full-hall support.
Further, two ends of the temporary tie bar are connected with the arch springing of the side arch through temporary anchoring blocks.
The utility model has the advantages that: the utility model discloses can support steadily to the limit arch and main arch, change the tie rod under the prerequisite that keeps the limit arch and main arch safety and stability, realize that controllable, adjustable, can look into, changeable swallow formula tie rod arched bridge tie rod is changed.
Drawings
FIG. 1 is a schematic view of a prior art flying swallow type tied arch bridge;
FIG. 2 is a schematic view of the erected arch support and temporary tie bars;
FIG. 3 is a schematic view of the tie rod anchor segments after casting and erection of the support frame;
reference numerals: 1-a tie bar; 2-main arch; 3-permanent anchor section; 4-side arch; 5-a temporary tie bar; 6-side arch support; 7, a support frame; 8-tie bar anchoring section.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 3, the utility model discloses a structure is changed to tie rod of swallow-shaped tie rod arch bridge, including main arch 2 and limit arch 4, limit arch 4 is located the both ends that the main arch 2 was encircleed, the below of limit arch 4 is provided with limit arch support 6, is provided with interim tie rod 5 between the both ends of main arch 2, the one end that the main arch 2 was kept away from to limit arch 4 is connected with tie rod anchor section 8, the below of tie rod anchor section 8 is provided with support frame 7 that is used for supporting anchor tie rod anchor section 8.
The side arch support 6, the tie bar anchoring section 8 and the support frame 7 form a side span support system, when the tie bar 1 is replaced, the arch rib of the side arch 4 is supported, and the jack and the like can be used for adjusting the jacking force of the side arch support 6 and the support frame 7 so as to control the arch rib bending moment of the side arch 4. The tie bar anchoring section 8 is used for anchoring the new tie bar 1, can adopt a metal frame body structure, preferably adopts concrete, and has low cost and corrosion resistance.
The two ends of the temporary tie bar 5 are connected with the arch springing of the side arch 4 through the temporary anchoring blocks, and the temporary tie bar 5 resists the horizontal thrust of the main arch 2 through tensioning and anchoring the temporary tie bar 5.
The utility model discloses a flying swallow formula tie rod arch bridge's tie rod change process does:
an edge arch support 6 is firstly built below the edge arch 4, the edge arch support 6 can adopt a steel pipe frame and the like, and jacking equipment such as a jack and the like is utilized to adjust the jacking force of the edge arch support 6 to the edge arch 4. Then, temporary anchoring blocks, which may be poured concrete blocks, are provided at the arch springing at both ends of the main arch 2, and then both ends of the temporary tie bars 5 are fixed to the temporary anchoring blocks, and the tension of the temporary tie bars 5 is adjusted to resist the horizontal thrust of the main arch 2.
After the edge arch support 6 and the temporary tie bar 5 are erected, the original tie bar 1 and the bridge anchoring section 3 can be removed, the edge arch support 6 and the temporary tie bar 5 are used for bearing loads to replace the original tie bar 1 and the bridge anchoring section 3, and the first stress system conversion is realized, as shown in fig. 2.
And then, a support frame 7 is built below the original bridge anchoring section 3, the support frame 7 is mainly used for supporting a tie bar anchoring section 8 for subsequent pouring, and a full-space support is adopted to ensure the stability of support.
After the support frame 7 is built, a formwork can be built, and the tie bar anchoring sections 8 are poured, as shown in fig. 3.
After the strength of the tie bar anchoring section 8 meets the requirements, a new tie bar 1 can be installed, as shown in fig. 1.
After the new tie bars 1 are installed in place, the support frame 7, the side arch support 6 and the temporary tie bars 5 can be detached, and the load of the bridge is borne by the new tie bars 1, so that the second conversion of a stress system is realized.
The utility model discloses a structure and method are changed to flying swallow formula tie rod arch bridge's tie rod, the conversion that can be stable owner encircles 2 and the load of side arch 4, guarantees to encircle 2 and side arch 4 steadying at the in-process of changing tie rod 1 owner, improves the security, realizes that controllable, adjustable, can look into, changeable flying swallow formula tie rod arch bridge tie rod changes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. Structure is changed to tie rod of swallow-shaped tie rod arch bridge, including main arch (2) and side arch (4), side arch (4) are located the both ends of main arch (2), its characterized in that: an edge arch support (6) is arranged below the edge arch (4), a temporary tie bar (5) is arranged between two ends of the main arch (2), one end, far away from the main arch (2), of the edge arch (4) is connected with a tie bar anchoring section (8), and a support frame (7) used for supporting the tie bar anchoring section (8) is arranged below the tie bar anchoring section (8).
2. A tie bar replacement structure for a flying swallow type tie bar arch bridge as claimed in claim 1, wherein: the tie bar anchoring section (8) is concrete.
3. A tie bar replacement structure for a flying swallow type tie bar arch bridge as claimed in claim 1, wherein: the support frame (7) is a full-hall support.
4. A tie bar replacement structure for a flying swallow type tie bar arch bridge as claimed in claim 1, wherein: the two ends of the temporary tie bar (5) are connected with the arch springing of the side arch (4) through temporary anchoring blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120097903.1U CN214882879U (en) | 2021-01-14 | 2021-01-14 | Tie bar replacing structure of swallow-type tie bar arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120097903.1U CN214882879U (en) | 2021-01-14 | 2021-01-14 | Tie bar replacing structure of swallow-type tie bar arch bridge |
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| Publication Number | Publication Date |
|---|---|
| CN214882879U true CN214882879U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120097903.1U Active CN214882879U (en) | 2021-01-14 | 2021-01-14 | Tie bar replacing structure of swallow-type tie bar arch bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263095A (en) * | 2022-01-11 | 2022-04-01 | 山东省交通规划设计院集团有限公司 | Through-type crossed tie bar multi-span continuous concrete filled steel tube basket arch bridge and construction method |
-
2021
- 2021-01-14 CN CN202120097903.1U patent/CN214882879U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263095A (en) * | 2022-01-11 | 2022-04-01 | 山东省交通规划设计院集团有限公司 | Through-type crossed tie bar multi-span continuous concrete filled steel tube basket arch bridge and construction method |
| CN114263095B (en) * | 2022-01-11 | 2023-10-17 | 山东省交通规划设计院集团有限公司 | Multi-span continuous steel tube concrete basket arch bridge with underpinning type cross tie bars and construction method |
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