CN102747695A - Quick dismantling method for multi-span continuous double arch bridge causing connected arch effect - Google Patents
Quick dismantling method for multi-span continuous double arch bridge causing connected arch effect Download PDFInfo
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- CN102747695A CN102747695A CN2012102262279A CN201210226227A CN102747695A CN 102747695 A CN102747695 A CN 102747695A CN 2012102262279 A CN2012102262279 A CN 2012102262279A CN 201210226227 A CN201210226227 A CN 201210226227A CN 102747695 A CN102747695 A CN 102747695A
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Abstract
The invention discloses a quick dismantling method for a multi-span continuous double arch bridge causing a connected arch effect. The quick dismantling method comprises the following steps of: (1) coffering a river channel and ensuring that fragments and residues during bridge dismantling can be cleaned in time; (2) pumping water and dredging to leave a construction site; (3) closing a navigable river and ensuring the safety of navigable vessels; (4) dismantling the railing and bridge surface concrete and reducing objects falling on the bridge surface; (5) sequentially chiseling off the arch ribs from the middle of an arch springing toward two sides; (6) enabling the bridge to continuously collapse by using the connected arch effect; and (7) treating wastes. According to the quick dismantling method disclosed by the invention, the construction period can be effectively shortened and the construction safety is improved; and the phenomenon that the river channel is blocked in the dismantling process is avoided by dredging a cofferdam, so that the construction cost is greatly reduced.
Description
Technical field
The present invention relates to tear open the bridge field, in particular, is that a kind of mode with the machine cutter causes the job practices that the arcading effect is removed the continuous double curvature arched bridge of multispan.
Background technology
Since the sixties, double curvature arched bridge is extensively adopted by all parts of the country.But use through decades; Except that few part double curvature arched bridge can adapt to the present traffic requirement through reinforcing, most of because class of loading is low, extended active duty; Diseases such as crack in various degree, concrete weathering have appearred; Become unsafe bridge, do not had maintenance and be worth, in the highway reconstruction, must remove and rebuild.Because the precautionary measures that some double curvature arched bridges there is no need when removing, seriously violate construction sequence and constructure scheme, blindly construction, unit in charge of construction's technical security management is not in place and the low inferior a variety of causes of site operation peopleware; In the process that double curvature arched bridge is removed; The production safety accident happens occasionally, and lesson is very deep.
Common double curvature arched bridge method for dismounting has mechanical dismounting method, blasting procedure and crane barge method etc.Though it is short that blasting procedure is removed the time, navigation channel cleaning waste slag difficulty is big, also has certain potential safety hazard; The crane barge method has bigger requirement to barge anchoring and crane barge ship.
Summary of the invention
, stop navigation time long, have potential safety hazard deficiency slow for the speed that overcomes existing double curvature arched bridge method for dismounting the purpose of this invention is to provide a kind of fast, short, safe and reliable double curvature arched bridge method for dismounting of time of stopping navigation of bridge speed of tearing open.Adopt this method, effectively the reduction of erection time, improve working security,, avoid demolishing process to stop up the river course, significantly reduce construction cost through the cofferdam desilting.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of continuous double curvature arched bridge fast Demolition of multispan method that causes the arcading effect may further comprise the steps:
(1) cofferdam, river course, fragment and residue when guaranteeing to tear bridge open can in time be cleared up;
(2) construction plant is reserved in the desilting of drawing water;
(3) close navigable river, guarantee the safety of navigation ship;
(4) remove railing and bridge deck concrete, reduce the bridge floor junk;
(5) in the middle of arch springing, cut a hole disconnected arch rib to both sides successively;
(6) utilize the arcading effect to make bridge take place to cave in continuously;
(7) processing of discarded object.
Further, with the disconnected arch springing of hammer drill cutter, the cutter Cut Selection causes the continuous collapse of bridge thus at the wet seam crossing of arch springing assembly unit.
Further again, do not cause continuous collapse for the disconnected arch springing of cutter, should build sidewalk, disconnected its adjacent arch springing of striding the footpath of cutter is till continuous collapse.
Further, adopt the disconnected arch springing of hammer drill cutter, guarantee the safety operation distance of hammer drill mechanical arm when cutter is disconnected, guarantee the safety of construction.
The position disconnected according to cutter, direction and scope that the prediction bridge collapses are evacuated the crowd in advance, avoid the pier of bridge that the danger that slippage, inclination cause personnel takes place under the effect of active earth pressure.
Beneficial effect of the present invention is: the present invention causes the continuous double curvature arched bridge of multispan of arcading effect, makes dismounting speed fast, has improved the efficient of tearing bridge open greatly, has solved tradition and has torn the shortcoming that bridge personnel and plant equipment have high input open.With the disconnected arch springing of hammer drill cutter, utilize the arcading effect of arch bridge, take place to cave in continuously, reserve safety and tear the bridge zone open, guaranteed safety of construction.
Description of drawings
Fig. 1 tears the bridge construction process flow diagram open for the machine cutter method that the embodiment of the invention provides;
Disconnected first section arch springing sketch map of hammer drill cutter that Fig. 2 provides for the embodiment of the invention;
The disconnected arch springing position view of hammer drill cutter that Fig. 3 provides for the embodiment of the invention;
Fig. 4 builds sidewalk when not forming continuous collapse and removes sketch map for the embodiment of the invention provides.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
With reference to Fig. 1 ~ Fig. 4, a kind of continuous double curvature arched bridge fast Demolition of multispan method that causes the arcading effect may further comprise the steps: (1) cofferdam, river course, fragment and residue when guaranteeing to tear bridge open can in time be cleared up.(2) construction plant is reserved in the desilting of drawing water.(3) sealing navigable river.(4) remove railing and bridge deck concrete.(5) in the middle of arch springing, cut a hole disconnected arch rib to both sides successively.(6) bridge takes place to cave in continuously.(7) offal treatment.
The river course that earlier bridge is belonged to before removing carries out the cofferdam, and warning mark is carried out in the sealing navigation, guarantees ship and personnel's safety.The step in cofferdam is divided into following three steps:
(1) selects and be ready to suitable material, measure setting-out, confirm the position, cofferdam.
(2) throwing in the pack amount is the earth bag of total capacity 1/3～1/2, remove the weir before earth bag is thrown in as far as possible at the bottom of, the foreign material on the riverbed, tree root, weeds etc., to reduce seepage.In water, throw in earth bag, the pole of available a pair of buckle send the earth bag hook in place.When cofferdam to water center, flow rate of water flow becomes big because the flowing water face reduces, and the filum laterale bag can be adorned gravel pebbles or coarse sand in order to avoid wash away.Earth bag acts in accordance with the slope and sends in the water, in order to avoid segregation causes seepage.
(3) treat that the cofferdam closes up moulding after, with canvas cloth integral body is carried out in the cofferdam outside and seals, canvas cloth will guarantee a certain amount of lap length, to reduce seepage, avoids earth bag to be washed away loss by water.For guaranteeing stability, the safety of cofferdam structure, should in time carry out consolidation process to the cofferdam.
The cofferdam is accomplished the back and is adopted water pump in time to draw water, draw water drain after, adopt excavator to carry out desilting, in addition artificial cooperation is pushed ahead piecemeal.Thoroughly clean out mud, in time carry out an acceptance inspection, meet the demands, mud is thrown aside in the spoir point of appointment.
Adopt machineries such as manual work, jack, pneumatic pick that main bridge railings is removed, dismounting order, building waste unloading are in proper order for to be carried out to the two sides symmetry by the main span span centre, and carry out simultaneously the left and right sides.During dismounting, railing is pulled on the inboard bridge floor earlier, prevents that railing from falling under the bridge, sever the connection steel plate of two heel posts bottom then with gas cutting, tighten up jack, railing is moved on inboard bridge floor, successively all railings are removed, entruck and carry away with jack.
Small-sized crushing mechanisms such as employing pneumatic pick are removed bridge deck concrete, before abolishing concrete, are equipped with the sprinkling truck, and before, during and after scale removal process, note the airborne dust influence, in time sprinkle water.During construction, construct simultaneously to two ends, be convenient to cleaning, transportation from the bridge middle part.The concrete block of digging out is transported to the appointed place and handles, and must not arbitrarily topple over.
Hammer drill is parked on the abutment, and with the spandrel arch and the arch springing of the disconnected end abutment of hammer drill cutter, at this moment, this end bay is with total collapse (as shown in Figure 2).By calculating, behind the end bay total collapse, bridge pier under the horizontal thrust effect bigger inclination will take place, and might cause chain reaction: promptly behind the end bay total collapse, residue is striden also and is caved in succession.When cutter breaks arch springing, use hammer drill to cut arch springing top peripheral part arch-wave from the side, adopt hammer drill in the middle of arch springing, to cut a hole to both sides successively; Collapse until bridge, guarantee that bridge collapses along the bridge longitudinal axis, at utmost controls collapsing procedure; Guarantee construction safety, as shown in Figure 3.
When one stride cave in after, bridge pier is less in the uneven thrust angle that has a down dip, and does not form the arcading effect; Fail to cause and cave in continuously; Should build hammer drill safe construction platform 5., under the prerequisite that guarantees operation construction machinery personal security, on operation platform; Use hammer drill to cut a hole disconnected residue arch springing successively from the side, until causing the full-bridge continuous collapse.
Hammer drill safe construction platform process is roughly following: at first carry out construction survey and construction lofting, rational longitudinal gradient is confirmed in route selection rationally.Through definite sidewalk elevation of top surface such as arch springing elevation, bridge floor height and excavator brachiums; Concrete step is: at first according to bridge floor elevation, the excavator maximum digging height and the safe construction distance of loading hammer drill; Confirm safe construction platform elevation of top surface and excavator safe construction scope, require to satisfy:
H
1-H
2≤H
3≤H
1-H
2+H
4
In the formula: H1 be the bridge floor height 1.; H2 be maximum digging height 2.; H3 be the sidewalk elevation 3.; H4 be Safe Vertical Distance 4., generally be taken as 1.5 meters.
Reduce the scope according to the digging radius of excavator more afterwards, superposed part is last trouble free service platform elevation of top surface scope; During construction, pound excavator for fear of the structure that drops, the stop position of excavator should be outside the horizontal safety operating distance, and the sidewalk elevation of top surface confirms that method is as shown in Figure 4..
Survey then and establish the roadbed king-pile, and use the timber marked, and carry out land clearing.The pioneer road width that leads to the safe construction platform is roughly 4～6 meters, and required filler is taked in the river, and is desirable if deficiency or Ha Noi do not have material, and the sandstone material that outward transport conforms to quality requirements fills.When filling cubic metre of earth, should be equably pave the filler near normal water content on the whole width of roadbed and roughly smooth, to guarantee the even compacting to embankment, degree of compaction reaches the compaction requirement of equivalent layer, forbids soil with different moisture content to mix and fills out.
In the demolishing process, some observation points are set at vault, arch springing, main arch circle 1/4,3/4 place, sedimentation, horizontal movement and the crack development of monitoring full-bridge key position, the discovery potential safety hazard is in time handled, and guarantees the safety of demolishing process.It is following that the position specifically is set:
(1) vault observation point: on limit rib on the vault bridge floor and middle rib position, punching to the arch rib upper limb, arrange 4 observation points, the sedimentation and the crack of observation vault takes place, development.
(2) main arch circle 1/4,3/4 place's observation point: on 1/4,3/4. four arch rib of arch ring, respectively arrange an observation point; Whether the sedimentation of the same arch rib in observation 1/4,3/4 place is synchronous; Detect the balance of both sides unloading, observe the concrete surface at this place whether the crack is arranged simultaneously.
(3) arch springing gap observation point: on the arch springing of single span both sides, respectively arrange 4 observation points, mainly observe concrete surface crack incidence and development situation;
(4) lateral displacement observation point:, hang the lateral displacement of 4 plumb bobs according to ground projection measurement main arch circle in 4 observation points of empty stomach section domatic top, the above river course of tide water level rib location arrangements.
If the change in displacement of arch ring is excessive suddenly in demolishing process, then stop construction immediately, detect, draft the dismounting scheme again, guarantee constructor's safety.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (5)
1. the continuous double curvature arched bridge fast Demolition of multispan method that causes the arcading effect is characterized in that: may further comprise the steps:
(1) cofferdam, river course, fragment and residue when guaranteeing to tear bridge open can in time be cleared up;
(2) construction plant is reserved in the desilting of drawing water;
(3) close navigable river, guarantee the safety of navigation ship;
(4) remove railing and bridge deck concrete, reduce the bridge floor junk;
(5) in the middle of arch springing, cut a hole disconnected arch rib to both sides successively;
(6) utilize the arcading effect to make bridge take place to cave in continuously;
(7) processing of discarded object.
2. the continuous double curvature arched bridge fast Demolition of the multispan method of initiation arcading effect according to claim 1; It is characterized in that: in the said step (5); With the disconnected arch springing of hammer drill cutter, the cutter Cut Selection causes the continuous collapse of bridge thus at the wet seam crossing of arch springing assembly unit.
3. the continuous double curvature arched bridge fast Demolition of the multispan method of initiation arcading effect according to claim 1 and 2; It is characterized in that: in the said step (6),, build sidewalk if the disconnected arch springing of cutter does not cause continuous collapse; Disconnected its adjacent arch springing of striding the footpath of cutter is till continuous collapse.
4. the continuous double curvature arched bridge fast Demolition of the multispan method of initiation arcading effect according to claim 1 and 2 is characterized in that: in the said step (5), guarantee the safety operation distance of hammer drill mechanical arm when cutter is disconnected, guarantee the safety of construction.
5. the continuous double curvature arched bridge fast Demolition of the multispan method of initiation arcading effect according to claim 1 and 2 is characterized in that, the position disconnected according to cutter, and direction and scope that the prediction bridge collapses are evacuated the crowd in advance.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631349A (en) * | 2015-02-04 | 2015-05-20 | 中铁十八局集团第一工程有限公司 | Disassembly and storage method of urban viaduct steel box girder |
| CN104708113A (en) * | 2015-02-04 | 2015-06-17 | 中铁十八局集团第一工程有限公司 | Cutting process of urban overpass steel box girder |
| CN106758888A (en) * | 2016-12-02 | 2017-05-31 | 中铁上海工程局集团有限公司 | A kind of quick method for dismounting for multispan concrete arch-type bridge waterborne |
| CN113481891A (en) * | 2021-07-28 | 2021-10-08 | 广州市第二市政工程有限公司 | Method for dismantling masonry structure continuous arch bridge |
| CN114592446A (en) * | 2022-03-23 | 2022-06-07 | 广西北投交通养护科技集团有限公司 | Quick breaking and dismantling method for masonry arch bridge with released bridge deck constraint |
| CN114808773A (en) * | 2022-03-23 | 2022-07-29 | 广西北投交通养护科技集团有限公司 | Construction method for fast breaking and dismantling masonry arch bridge based on bridge floor cutting |
| CN114855655A (en) * | 2022-04-24 | 2022-08-05 | 广西北投交通养护科技集团有限公司 | Method for dismantling arch-connected bridge based on distance from center of gravity of cross section to trial overturning shaft |
| CN114960479A (en) * | 2022-04-24 | 2022-08-30 | 广西北投交通养护科技集团有限公司 | Method for dismantling arch-connected bridge based on shallow-buried foundation critical cross-sectional area overturning destruction |
| CN115125876A (en) * | 2022-05-17 | 2022-09-30 | 广西北投交通养护科技集团有限公司 | Method for quickly dismantling low pier multi-arch bridge based on shearing failure of pier |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005083186A (en) * | 2003-09-09 | 2005-03-31 | Kokudo:Kk | Demolition and removal method for arch bridge |
-
2012
- 2012-06-29 CN CN2012102262279A patent/CN102747695A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005083186A (en) * | 2003-09-09 | 2005-03-31 | Kokudo:Kk | Demolition and removal method for arch bridge |
Non-Patent Citations (6)
| Title |
|---|
| 吴继全等: "控制爆破拆除双曲拱桥", 《爆破》, vol. 13, no. 3, 30 September 1996 (1996-09-30) * |
| 孟文华: "双曲拱桥拆除方法", 《市政技术》, vol. 23, 30 September 2005 (2005-09-30) * |
| 未知: "孙渡老桥拆除方案", 《HTTPWENKU.BAIDU.COMVIEWB592DD1FA300A6C30C229FFB.HTML》, 19 October 2011 (2011-10-19) * |
| 胡特新: "漳州旧郭坑大桥的拆除施工", 《桥梁建筑》, 31 December 2006 (2006-12-31) * |
| 邯郸市市政工程公司: "邯郸市光明大街滏阳河桥工程旧桥拆除方案", 《HTTPWENKU.BAIDU.COMVIEW825C4F1BB7360B4C2E3F64AB.HTML》, 23 December 2011 (2011-12-23) * |
| 陈达庚等: "绣江双曲拱大桥拆除施工技术", 《西部交通科技》, no. 7, 31 July 2010 (2010-07-31) * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631349A (en) * | 2015-02-04 | 2015-05-20 | 中铁十八局集团第一工程有限公司 | Disassembly and storage method of urban viaduct steel box girder |
| CN104708113A (en) * | 2015-02-04 | 2015-06-17 | 中铁十八局集团第一工程有限公司 | Cutting process of urban overpass steel box girder |
| CN104631349B (en) * | 2015-02-04 | 2016-04-27 | 中铁十八局集团第一工程有限公司 | A kind of dismounting of urban viaduct steel box-girder and deposit method |
| CN106758888A (en) * | 2016-12-02 | 2017-05-31 | 中铁上海工程局集团有限公司 | A kind of quick method for dismounting for multispan concrete arch-type bridge waterborne |
| CN113481891B (en) * | 2021-07-28 | 2022-09-27 | 广州市第二市政工程有限公司 | Method for dismantling masonry structure continuous arch bridge |
| CN113481891A (en) * | 2021-07-28 | 2021-10-08 | 广州市第二市政工程有限公司 | Method for dismantling masonry structure continuous arch bridge |
| CN114592446A (en) * | 2022-03-23 | 2022-06-07 | 广西北投交通养护科技集团有限公司 | Quick breaking and dismantling method for masonry arch bridge with released bridge deck constraint |
| CN114808773A (en) * | 2022-03-23 | 2022-07-29 | 广西北投交通养护科技集团有限公司 | Construction method for fast breaking and dismantling masonry arch bridge based on bridge floor cutting |
| CN114808773B (en) * | 2022-03-23 | 2022-12-02 | 广西北投交通养护科技集团有限公司 | Construction method for fast breaking and dismantling masonry arch bridge based on bridge floor cutting |
| CN114855655A (en) * | 2022-04-24 | 2022-08-05 | 广西北投交通养护科技集团有限公司 | Method for dismantling arch-connected bridge based on distance from center of gravity of cross section to trial overturning shaft |
| CN114960479A (en) * | 2022-04-24 | 2022-08-30 | 广西北投交通养护科技集团有限公司 | Method for dismantling arch-connected bridge based on shallow-buried foundation critical cross-sectional area overturning destruction |
| CN114855655B (en) * | 2022-04-24 | 2023-08-29 | 广西北投交通养护科技集团有限公司 | Method for dismantling double arch bridge based on distance from center of gravity of cross section to experimental calculation overturning shaft |
| CN114960479B (en) * | 2022-04-24 | 2024-04-02 | 广西北投交通养护科技集团有限公司 | Bridge dismantling method based on shallow foundation critical cross-section area overturning damage |
| CN115125876A (en) * | 2022-05-17 | 2022-09-30 | 广西北投交通养护科技集团有限公司 | Method for quickly dismantling low pier multi-arch bridge based on shearing failure of pier |
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Application publication date: 20121024 |