CN101603291A - Construction method for strengthening arch foot crack of stone arch bridge - Google Patents
Construction method for strengthening arch foot crack of stone arch bridge Download PDFInfo
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- CN101603291A CN101603291A CNA2009101041722A CN200910104172A CN101603291A CN 101603291 A CN101603291 A CN 101603291A CN A2009101041722 A CNA2009101041722 A CN A2009101041722A CN 200910104172 A CN200910104172 A CN 200910104172A CN 101603291 A CN101603291 A CN 101603291A
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Abstract
Construction method for strengthening arch foot crack of stone arch bridge of the present invention the steps include: that 1. are drilled with the hole around in stone arch bridge arch springing crack, and implants reinforcing bar; 2. on arch ring, some transverse reinforcement hoops are installed arch ring is surrounded; 3. in the transverse reinforcement hoop, insert chock and apply confined pressure to arch ring; 4. on the hogback and soffit of arch ring, hogback reinforcing bar and soffit reinforcing bar longitudinally are set respectively; The joint of hogback reinforcing bar and soffit reinforcing bar and transverse reinforcement hoop or implantation reinforcing bar, firmly welding mutually; 5. hogback reinforcing bar, soffit reinforcing bar are inserted in the bridge pier and firmly connect, perhaps reinforcing bar and its firm connection are set at the pier plane of structure place of bridge pier.Job practices of the present invention is treated crack and the arch ring of reinforcing the position and is applied a confined pressure, can strengthen being subjected to force intensity, improving its force structure of arch ring, prevents that effectively the crack from continuing to enlarge; To add solid, be reinforced body and pedestal fuses, improve the ability of anti-dynamic load impact; Site operation is simple, convenient, and reinforcement cost is low.
Description
Technical field
The arch springing that the present invention relates to reinforced construction method, the especially stone arch bridge of a kind of building after the cracking reinforced construction method that breaks.
Background technology
Stone arch bridge is to adopt material such as stone to be built in bridge on river, the zanjon etc., because the restriction of construction method, technology and material, from China ancient times to modern age, the overwhelming majority of building on river, zanjon all is a stone arch bridge.And in long-term use, because factors such as self weathering, load-bearing are big, crustal movement, geology variation, positions such as the arch springing of stone arch bridge, bridge pier, the body of a bridge are easy to generate big and small crackle, cause its security performance to reduce even become unsafe bridge and can not normally use, just need carry out consolidation process.
And in the prior art, the arch springing of the stone arch bridge method of carrying out consolidation process of breaking is mainly contained following three kinds, 1, in the processing method of arch springing rent buttress; This kind method can increase the sectional area of arch springing section, can improve the force structure of arch springing, but that its deficiency mainly is a buttress is not firm with being connected of original arch ring, and the time is long had slightly just lost efficacy, relatively poor to the consolidation effect in crack.2, paste the processing method of one deck or two-layer steel mesh reinforcement in the bottom of arch springing rent; This kind method can not apply a confined pressure to location of cracks, and the crack is said and continued to enlarge, can not play the effect that prevents that the crack from enlarging.3, the processing method of perfusion mortar in the crack; This kind method does not significantly strengthen the bulk strength of rock, and consolidation effect is relatively poor.Prior art can not satisfy the needs of building operations to the break method of carrying out consolidation process of the arch springing of stone arch bridge, especially to having the ancient stone arch bridge of historical value, historical relic value, can not remove reconstruction simply, need a kind of simple and practical, consolidation effect is preferable, can prevent effectively that the crack from continuing the construction method for strengthening arch foot crack of stone arch bridge that enlarges.
Summary of the invention
The present invention is directed to the above-mentioned deficiency of the reinforced construction method of prior art, provide a kind of simple and practical, consolidation effect is preferable, can effectively prevent the construction method for strengthening arch foot crack of stone arch bridge that the crack continue to enlarge.
Technical scheme of the present invention is: construction method for strengthening arch foot crack of stone arch bridge, it is characterized in that comprising the steps: 1, on the arch ring around the stone arch bridge arch springing crack, and according to technological requirement, be drilled with several holes, be implanted into reinforcing bar in each hole; When needing, in each hole, inject mortar with the fixing reinforcing bar of implanting;
2, on the arch ring around the stone arch bridge arch springing crack,, several transverse reinforcement hoops are installed according to technological requirement; The transverse reinforcement hoop is arranged on the arch ring surface, and arch ring is surrounded;
3, in the transverse reinforcement hoop, insert chock, make the transverse reinforcement hoop apply confined pressure to arch ring;
4, on the hogback and soffit of arch ring, hogback reinforcing bar and soffit reinforcing bar longitudinally are set respectively; The joint of hogback reinforcing bar and soffit reinforcing bar and transverse reinforcement hoop, perhaps hogback reinforcing bar and soffit reinforcing bar and the joint of implanting reinforcing bar, firmly welding mutually;
5, the hogback reinforcing bar is inserted in the bridge pier and firmly connect, perhaps reinforcing bar is set firmly to be connected with the hogback reinforcing bar at the pier plane of structure place of bridge pier;
6, the soffit reinforcing bar is inserted in the bridge pier and firmly connect, perhaps prestressed anchor is set and firmly is connected with the soffit reinforcing bar at the place, pier plane of bridge pier.
Construction method for strengthening arch foot crack of stone arch bridge of the present invention with respect to prior art, has following characteristics:
1, treat the crack at reinforcing position and the arch ring of peripheral region thereof and apply a confined pressure, the force structure at position is reinforced in be subjected to force intensity, the improvement that can strengthen arch ring, prevents that effectively the crack continuation from enlarging.
2, can be effectively with adding solid, being reinforced body and substrate fuses, be applicable to big dynamic loading, can improve the ability of anti-dynamic load impact.
3, site operation is simple, convenient, and operating personnel can grasp soon.
4, reduce the consolidation process cost that stone arch bridge breaks, can effectively prolong its application life.
Description of drawings
Fig. 1 is the structure diagram of arch foot crack of stone arch bridge of the present invention;
Fig. 2 is break a structure diagram behind the strengthening construction of arch springing of the present invention.
The specific embodiment
Construction method for strengthening arch foot crack of stone arch bridge of the present invention comprises the steps:
1, on the arch ring around the stone arch bridge arch springing crack,, is drilled with several holes, is implanted into reinforcing bar in each hole according to technological requirement; When needing, in each hole, inject mortar with the fixing reinforcing bar of implanting;
2, on the arch ring around the stone arch bridge arch springing crack,, several transverse reinforcement hoops are installed according to technological requirement; The transverse reinforcement hoop is arranged on the arch ring surface, and arch ring is surrounded;
3, in the transverse reinforcement hoop, insert chock, make the transverse reinforcement hoop apply confined pressure to arch ring;
4, on the hogback and soffit of arch ring, hogback reinforcing bar and soffit reinforcing bar longitudinally are set respectively; The joint of hogback reinforcing bar and soffit reinforcing bar and transverse reinforcement hoop, perhaps hogback reinforcing bar and soffit reinforcing bar and the joint of implanting reinforcing bar, firmly welding mutually;
5, the hogback reinforcing bar is inserted in the bridge pier and firmly connect, perhaps reinforcing bar is set firmly to be connected with the hogback reinforcing bar at the pier plane of structure place of bridge pier;
6, the soffit reinforcing bar is inserted in the bridge pier and firmly connect, perhaps prestressed anchor is set and firmly is connected with the soffit reinforcing bar at the place, pier plane of bridge pier.
Further supplementary features are: on the arch ring, the hole that is drilled with is parallel with the direction in crack around the crack.
All or part of hogback reinforcing bar is passed bridge pier, insert in the pedestal of stone arch bridge and firmly connect.
All or part of soffit reinforcing bar is passed bridge pier, insert in the pedestal of stone arch bridge and firmly connect.
In Fig. 1,2, the place has produced crack 1 at the stone arch bridge arch springing, in order to reinforce this stone arch bridge, according to technological requirement, on the arch ring 2 around the crack 1, be drilled with several holes 3, hole 3 is roughly parallel with the direction in crack 1, in each hole 3, reinforcing bar 4 is set, when needing, in each hole 3, injects mortar to fix this implantation reinforcing bar 4.
On arch ring 2,, several transverse reinforcement hoops 5 are installed according to technological requirement; Transverse reinforcement hoop 5 is arranged on arch ring 2 surfaces, in arch ring 2 is enclosed in; This transverse reinforcement hoop 5 is quadrangle or circle, is enclosed on arch ring 2 surfaces.
In transverse reinforcement hoop 5, insert chock 6, regulate the distance that chock 6 inserts in the transverse reinforcement hoops 5, make transverse reinforcement hoop 5 closely banding on arch ring 2 surfaces, apply confined pressure for arch ring 2, reinforce the force structure at position be subjected to force intensity, the improvement that strengthen arch ring 2, prevent that crack 1 continuation from enlarging.
On 2 hogbacks (upper surface) and soffit (soffit) of arch ring, hogback reinforcing bar 7 and soffit reinforcing bar 8 (with respect to transverse reinforcement hoop 5) longitudinally are set respectively; The joint of hogback reinforcing bar 7 and soffit reinforcing bar 8 and transverse reinforcement hoop 5, perhaps the joint of hogback reinforcing bar 7 and soffit reinforcing bar 8 and implantation reinforcing bar 4 firmly welds mutually, forms an integral body, significantly improves 2 force structures of arch ring, prevents crack 1 continuation expansion.
Hogback reinforcing bar 7 is inserted in the bridge piers 10 and firmly connect, perhaps reinforcing bar is set firmly to be connected with hogback reinforcing bar 7 at the pier plane of structure place of bridge pier 10; Perhaps all or part of hogback reinforcing bar 7 is passed bridge pier 10, insert in the pedestal of stone arch bridge and firmly connect.
Soffit reinforcing bar 8 is inserted in the bridge piers 10 and firmly connect, perhaps prestressed anchor is set firmly to be connected with soffit reinforcing bar 8 at the place, pier plane of bridge pier; Prestressed anchor is existing technology, does not elaborate at this.Perhaps, all or part of soffit reinforcing bar 8 is passed bridge pier 10, insert in the pedestal of stone arch bridge and firmly connect.
Firmly be connected by hogback reinforcing bar 7 and soffit reinforcing bar 8 being inserted in the bridge piers 10, perhaps the reinforcing bar or the prestressed anchor of the pier face setting by bridge pier are connected in the bridge pier 10, the shock loading that bridge floor is subjected to is by implanting reinforcing bar 4, transverse reinforcement hoop 5, hogback reinforcing bar 7 and soffit reinforcing bar 8 is delivered on the bridge pier 10 or in the pedestal of stone arch bridge, arch ring 2 around the crack 1 load that substantially no longer withstands shocks, significantly improve the force structure of arch ring 2, prevent that crack 1 continuation from enlarging.When needed, can perfusion mortar, concrete etc., above-mentioned reinforcing bar is fixed, to strengthen bulk strength.
Claims (3)
1, construction method for strengthening arch foot crack of stone arch bridge is characterized in that comprising the steps:
(1), on the arch ring around the stone arch bridge arch springing crack,, be drilled with several holes, be implanted into reinforcing bar in each hole according to technological requirement; When needing, in each hole, inject mortar with the fixing reinforcing bar of implanting;
(2), on the arch ring around the stone arch bridge arch springing crack,, several transverse reinforcement hoops are installed according to technological requirement; The transverse reinforcement hoop is arranged on the arch ring surface, and arch ring is surrounded;
(3), in the transverse reinforcement hoop, insert chock, make the transverse reinforcement hoop apply confined pressure to arch ring;
(4), on the hogback and soffit of arch ring, hogback reinforcing bar and soffit reinforcing bar longitudinally are set respectively; The joint of hogback reinforcing bar and soffit reinforcing bar and transverse reinforcement hoop, perhaps hogback reinforcing bar and soffit reinforcing bar and the joint of implanting reinforcing bar, firmly welding mutually;
(5), the hogback reinforcing bar inserted in the bridge pier and firmly connect, perhaps reinforcing bar is set firmly to be connected with the hogback reinforcing bar at the pier plane of structure place of bridge pier;
(6), the soffit reinforcing bar inserted in the bridge pier and firmly connect, perhaps prestressed anchor is set and firmly is connected with the soffit reinforcing bar at the place, pier plane of bridge pier.
2, construction method for strengthening arch foot crack of stone arch bridge according to claim 1 is characterized in that: all or part of hogback reinforcing bar is passed bridge pier, insert in the pedestal of stone arch bridge and firmly connect.
3, construction method for strengthening arch foot crack of stone arch bridge according to claim 1 and 2 is characterized in that: all or part of soffit reinforcing bar is passed bridge pier, insert in the pedestal of stone arch bridge and firmly connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101041722A CN101603291A (en) | 2009-06-25 | 2009-06-25 | Construction method for strengthening arch foot crack of stone arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101041722A CN101603291A (en) | 2009-06-25 | 2009-06-25 | Construction method for strengthening arch foot crack of stone arch bridge |
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| CN101603291A true CN101603291A (en) | 2009-12-16 |
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| CNA2009101041722A Pending CN101603291A (en) | 2009-06-25 | 2009-06-25 | Construction method for strengthening arch foot crack of stone arch bridge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322026A (en) * | 2011-08-24 | 2012-01-18 | 重庆交通大学 | Reinforcing method of masonry arch bridge |
| CN104631346A (en) * | 2015-01-16 | 2015-05-20 | 北京建筑大学 | Two-hinged arch bridge double sided one-way pressed bar reinforced structure and method |
| CN109112976A (en) * | 2018-09-10 | 2019-01-01 | 长沙理工大学 | Arch foot maintenance device and maintenance method for realizing multi-degree-of-freedom displacement of arch foot |
| CN113323001A (en) * | 2021-06-08 | 2021-08-31 | 核工业西南勘察设计研究院有限公司 | Arch bridge thrust foundation structure and pouring method thereof |
| CN114370009A (en) * | 2021-12-30 | 2022-04-19 | 浙江正方交通建设有限公司 | Active-service open-web type arch bridge comprehensive reinforcing structure and construction method |
| CN117966972A (en) * | 2024-03-28 | 2024-05-03 | 北京建工集团有限责任公司 | Large-span arch pier seat system and construction method thereof |
-
2009
- 2009-06-25 CN CNA2009101041722A patent/CN101603291A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322026A (en) * | 2011-08-24 | 2012-01-18 | 重庆交通大学 | Reinforcing method of masonry arch bridge |
| CN102322026B (en) * | 2011-08-24 | 2013-08-07 | 重庆交通大学 | Reinforcing method of masonry arch bridge |
| CN104631346A (en) * | 2015-01-16 | 2015-05-20 | 北京建筑大学 | Two-hinged arch bridge double sided one-way pressed bar reinforced structure and method |
| CN109112976A (en) * | 2018-09-10 | 2019-01-01 | 长沙理工大学 | Arch foot maintenance device and maintenance method for realizing multi-degree-of-freedom displacement of arch foot |
| CN109112976B (en) * | 2018-09-10 | 2023-09-22 | 长沙理工大学 | Arch leg maintenance device and maintenance method for realizing arch leg multi-degree-of-freedom deflection |
| CN113323001A (en) * | 2021-06-08 | 2021-08-31 | 核工业西南勘察设计研究院有限公司 | Arch bridge thrust foundation structure and pouring method thereof |
| CN114370009A (en) * | 2021-12-30 | 2022-04-19 | 浙江正方交通建设有限公司 | Active-service open-web type arch bridge comprehensive reinforcing structure and construction method |
| CN114370009B (en) * | 2021-12-30 | 2024-05-24 | 浙江正方交通建设有限公司 | Active hollow arch bridge comprehensive reinforcement structure and construction method |
| CN117966972A (en) * | 2024-03-28 | 2024-05-03 | 北京建工集团有限责任公司 | Large-span arch pier seat system and construction method thereof |
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Open date: 20091216 |