CN214459762U - Old bridge ecological demolition structure - Google Patents
Old bridge ecological demolition structure Download PDFInfo
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- CN214459762U CN214459762U CN202120102214.5U CN202120102214U CN214459762U CN 214459762 U CN214459762 U CN 214459762U CN 202120102214 U CN202120102214 U CN 202120102214U CN 214459762 U CN214459762 U CN 214459762U
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Abstract
The utility model relates to an old bridge ecological demolition structure, which comprises a bridge demolition crane, an anchoring rod, an old bridge capping beam, an old bridge pier stud, an old bridge foundation, a lifting hook, a hoisting cable, an old bridge cast-in-place plate, a transport vehicle, an old bridge demolition unit, a guardrail demolition stabilizing device, a pontoon crane, a demolition unit dividing line, a blast hole, a hoisting hole, a flying stone protective net and a movable supporting protective system; an old bridge pier column is arranged at the upper part of the old bridge foundation, an old bridge coping is arranged at the upper part of the old bridge pier column, and an old bridge cast-in-place plate is erected at the upper part of the old bridge coping; the guardrail dismounting and stabilizing device comprises a stabilizing inclined rod, a stabilizing hook, a bolt and a base, wherein the stabilizing hook is connected with the upper end of the stabilizing inclined rod, and the lower end of the stabilizing inclined rod is connected with the base with a bolt hole. The utility model has the advantages that: the utility model discloses an at the regional protection network that covers flying stone of static blasting and carry out the split of segmentation, can prevent that flying stone from pounding the people, can prevent dust again, has avoided shortcoming and restriction in the traditional blasting construction, has protected the environment, and the security is high.
Description
Technical Field
The utility model relates to an engineering technical field is demolishd to the bridge, in particular to structure is demolishd to old bridge ecology.
Background
With the rapid increase of the socioeconomic level, the national traffic infrastructure is rapidly developed, and part of roads, railways and bridges built in early stage are not suitable for the current traffic demand. Especially, the bridges which cannot meet the modern traffic requirements or reach the design age need to be dismantled, otherwise, the national and people's lives and properties are greatly lost.
In the existing bridge demolition construction technology, mechanical crushing demolition, blasting, cutting, decomposition and hoisting are mainly adopted. When the bridge is dismantled, the stability of the structure should be ensured as much as possible, and the bridge cannot be influenced by too much vibration, impact and the like. Although the construction period of mechanical crushing and demolition construction and blasting construction is short, the investment of mechanical equipment is less, the environmental pollution is great in the construction process, a certain safety distance needs to be kept between the blasting construction and surrounding buildings, and strict safety and traffic control needs to be carried out on a construction site. And although the cutting, decomposing and hoisting are adopted, the demolition noise is low, the air pollution is low, the construction period is overlong, and the investment of large-scale mechanical crushing technology is large.
Therefore, the old bridge ecological dismantling structure which has small environmental pollution, reasonable construction period and high safety is needed to be found out urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the prior art, providing an old bridge ecology demolishs structure.
The old bridge ecological demolition structure comprises a bridge demolition crane, an anchoring rod, an old bridge capping beam, an old bridge pier stud, an old bridge foundation, a lifting hook, a hoisting cable, an old bridge cast-in-place plate, a transport vehicle, an old bridge demolition unit, a guardrail demolition stabilizing device, a pontoon crane, a demolition unit dividing line, a blast hole, a hoisting hole, a flying stone protective net and a movable support protective system; an old bridge pier column is arranged at the upper part of the old bridge foundation, an old bridge coping is arranged at the upper part of the old bridge pier column, and an old bridge cast-in-place plate is erected at the upper part of the old bridge coping; the guardrail dismounting and stabilizing device comprises a stabilizing inclined rod, a stabilizing hook, a bolt and a base, wherein the stabilizing hook is connected with the upper end of the stabilizing inclined rod, the lower end of the stabilizing inclined rod is connected with the base with a bolt hole, and the base is fixedly connected with an old bridge cast-in-place plate through the bolt; the bridge dismantling crane is arranged on an old bridge capping beam through an anchoring rod, the old bridge cast-in-place plate forms a plurality of old bridge dismantling units through arranging dismantling unit dividing lines, lifting holes are arranged at four corners of the old bridge dismantling units, blast holes are arranged on the dismantling unit dividing lines, the flyrock protective net is covered and arranged in the dismantling unit dividing line area, one end of the hoisting cable is connected with the lifting hole, the other end of the hoisting cable is connected with a lifting hook on the bridge dismantling crane, the transport vehicle is arranged on the old bridge cast-in-place plate, and the pontoon crane is arranged in a river channel; the movable supporting protection system comprises a first top plate, a second top plate, a lifting device, a movable trolley, a rail, a transverse sleeper beam, steel corbels, arched Bailey beams and a synchronous connecting rod, wherein the steel corbels are arranged on two sides of an old bridge pier, the arched Bailey beams are arranged between the adjacent steel corbels on the same side, the transverse sleeper beam is arranged on the arched Bailey beams, the rail is arranged on the transverse sleeper beam, the movable trolley is arranged on the rail, the lifting device is arranged on the movable trolley, the first top plate and the second top plate are sequentially arranged on the top of the lifting device, and the synchronous connecting rod is arranged between the movable trolleys on two sides of the old bridge pier.
Preferably, the method comprises the following steps: the shape of the stabilizing hook is the same as the shape of the top of the guardrail of the old bridge at the edge of the cast-in-place slab of the old bridge.
Preferably, the method comprises the following steps: the old bridge capping beam, the old bridge pier column and the old bridge foundation are temporary reserved structures and serve as foundations for erecting the bridge dismantling crane.
Preferably, the method comprises the following steps: the length of the movable trolley is equal to the length of the two old bridge dismantling units.
Preferably, the method comprises the following steps: first roof and second roof lead to the length setting and demolish the unit below at old bridge, first roof setting is in the below that the unit was demolishd at the old bridge of waiting to demolish, the unit was demolishd at adjacent old bridge below to the second roof setting.
Preferably, the method comprises the following steps: the flyrock protective net is of a double-layer structure, the inner layer is a flyrock-preventing steel wire mesh, and the outer layer is a dustproof fine mesh.
The utility model has the advantages that:
1. compared with the prior art, the utility model discloses adopt static blasting, the method hoist and mount of cutting decomposition earlier and disassemble the pontic structure, concentrate on appointed place at last and carry out mechanical crushing and demolish, synthesized the advantage in three kinds of old bridges demolish the technique, environmental pollution has significantly reduced has protected pontic retention structure and peripheral building, and technical advantage is obvious.
2. The utility model discloses an at the regional protection network that covers flying stone of static blasting and carry out the split of segmentation, can prevent that flying stone from pounding the people, can prevent dust again, has avoided shortcoming and restriction in the traditional blasting construction, has protected the environment, and the security is high.
3. The utility model discloses the securing device is demolishd to the guardrail that sets up, rational in infrastructure, easy preparation easy dismouting can avoid the guardrail to empty or fall into the river when segmentation cutting guardrail.
4. The utility model discloses the protection system easy dismounting is strutted to the movable type that sets up, can effectively protect the cast-in-place board of old bridge and wait to tear open the unbalance when the unit construction, avoids taking place the circumstances such as fall, guarantees construction safety.
Drawings
FIG. 1 is a construction schematic diagram of an old bridge ecological demolition structure;
FIG. 2 is a schematic view of the deployment of the guardrail removal stabilizer;
FIG. 3 is a schematic view of the guardrail removal stabilizer;
FIG. 4 is a schematic plan view of a blasthole and a drawhole;
FIG. 5 is a schematic illustration of the installation of the mobile shoring protection system;
FIG. 6 is a schematic plan view of the mobile shoring protection system;
FIG. 7 is an installation schematic of the demolition crane;
FIG. 8 is a construction drawing for dismantling an old bridge cast-in-place slab in sections;
fig. 9 is a schematic illustration of removal of an old bridge capping beam.
Description of reference numerals: 1-bridge removal crane; 2-anchoring rod; 3-old bridge capping beam; 4-old pier stud; 5-old bridge foundation; 6-lifting hook; 7-hoisting cable; 8-old bridge cast-in-place slab; 9-transport vehicle; 10-old bridge demolition unit; 11-river channel; 12-old bridge guard rail; 13-dismantling the stabilizing device of the guardrail; 14-firm diagonal; 15-stabilizing hook; 16-bolt; 17-base; 18-floating crane; 19-demolish the unit dividing line; 20-blast hole; 21-hanging hole; 22-first top panel; 23-second top panel; 24-lifting device; 25-moving the trolley; 26-track; 27-transverse bolster; 28-steel corbel; 29-bow shaped bailey beam; 30-flying stone protective net; 31-synchronous tie rod.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Example one
The old bridge ecological demolition structure comprises a bridge demolition crane 1, an anchoring rod 2, an old bridge capping beam 3, an old bridge pier stud 4, an old bridge foundation 5, a lifting hook 6, a hoisting cable 7, an old bridge cast-in-place plate 8, a transport vehicle 9, an old bridge demolition unit 10, a guardrail demolition stabilizing device 13, a pontoon crane 18, a demolition unit dividing line 19, a blast hole 20, a hoisting hole 21, a flying stone protective net 30 and a movable supporting protective system; an old bridge pier column 4 is arranged at the upper part of the old bridge foundation 5, an old bridge coping 3 is arranged at the upper part of the old bridge pier column 4, and an old bridge cast-in-place plate 8 is erected at the upper part of the old bridge coping 3; the guardrail dismounting and stabilizing device 13 comprises a stabilizing inclined rod 14, a stabilizing hook 15, a bolt 16 and a base 17, wherein the stabilizing hook 15 is connected with the upper end of the stabilizing inclined rod 14, the lower end of the stabilizing inclined rod 14 is connected with the base 17 with a bolt hole, and the base 17 can be fixedly connected with an old bridge cast-in-place plate 8 through the bolt 16; the bridge dismantling crane 1 is arranged on an old bridge capping beam 3 through an anchor rod 2, the old bridge cast-in-place plate 8 forms a plurality of old bridge dismantling units 10 by arranging dismantling unit dividing lines 19, hanging holes 21 are arranged at four corners of each old bridge dismantling unit 10, blast holes 20 are arranged on the dismantling unit dividing lines 19, a flying stone protective net 30 is covered and arranged in the area of the dismantling unit dividing lines 19, one end of a hoisting cable 7 is connected with the hanging holes 21, the other end of the hoisting cable is connected with a lifting hook 6 on the bridge dismantling crane 1, the transport vehicle 9 is arranged on the old bridge cast-in-place plate 8, and the floating boat crane 18 is arranged in a river channel 11; the movable supporting protection system comprises a first top plate 22, a second top plate 23, a lifting device 24, a movable trolley 25, rails 26, transverse sleepers 27, steel corbels 28, arched Bailey beams 29 and synchronous connecting rods 31, wherein the steel corbels 28 are arranged on two sides of an old bridge pier column 4, the arched Bailey beams 29 are arranged between the adjacent steel corbels 28 on the same side, the transverse sleepers 27 are arranged on the arched Bailey beams 29, the rails 26 are arranged on the transverse sleepers 27, the movable trolley 25 is arranged on the rails 26, the lifting device 24 is arranged on the movable trolley 25, the first top plate 22 and the second top plate 23 are sequentially arranged on the top of the lifting device 24, and the synchronous connecting rods 31 are arranged between the movable trolleys 25 on two sides of the old bridge pier column 4 in a crossed mode.
The shape of the stabilizing hook 15 is the same as the shape of the top of the old bridge guardrail 12 at the edge of the old bridge cast-in-place plate 8.
The old bridge capping beam 3, the old bridge pier stud 4 and the old bridge foundation 5 are temporary reserved structures and serve as foundations for erecting the bridge dismantling crane 1.
The bridge dismantling crane 1 is mainly used for dismantling a bridge deck system and an old bridge cast-in-place plate 8, and the pontoon crane 18 is mainly used for dismantling an old bridge capping beam 3, an old bridge pier stud 4 and an old bridge foundation 5.
The length of the travelling trolley 25 is equal to the length of the two old bridge demolition units 10.
The first top plate 22 and the second top plate 23 are arranged below the old bridge dismantling unit 10 in a whole length mode, the first top plate 22 is arranged below the old bridge dismantling unit 10 to be dismantled during construction, and the second top plate 23 is arranged below the adjacent old bridge dismantling unit 10.
The flyrock protective net 30 is of a double-layer structure, the inner layer is a flyrock-proof steel wire mesh, and the outer layer is a dustproof fine mesh.
Example two
The construction method of the old bridge ecological demolition system comprises the following steps:
1) as shown in fig. 2 and 3, the deck system auxiliary structure is removed: the method comprises the following steps of (1) segmenting old bridge guardrails 12, arranging guardrail dismantling and stabilizing devices 13 at intervals on the inner sides of the segmented guardrails, sequentially cutting the old bridge guardrails 12, and conveying the old bridge guardrails to a dismantling workshop through a transport vehicle 9 hoisted to a bridge floor by an automobile for detailed dismantling;
2) and (3) dismantling the old bridge cast-in-place plate 8 in sections:
dividing the old bridge demolition unit 10, as shown in fig. 4: carrying out construction measurement paying-off and marking on the old bridge cast-in-place plate 8, dividing the old bridge cast-in-place plate 8 into a plurality of sections of old bridge dismantling units 10, drilling lifting holes 21 on the old bridge dismantling units 10, and drilling blast holes 20 on a division line 19 of the dismantling unit which is dismantled firstly;
secondly, as shown in fig. 5 and 6, installing a movable supporting protection system: firstly, mounting steel corbels 28 on two sides of an old bridge pier stud 4 by using anchor bolts, bolting and mounting an arched Bailey beam 29 on the steel corbel 28 by taking a pier span as a unit, then sequentially mounting a transverse sleeper beam 27 and a track 26 on the arched Bailey beam 29, finally mounting an assembled movable trolley 25 on the tracks 26 on two sides of the old bridge pier stud 4, mounting a high-power lifting device 24 on the movable trolley 25, and mounting a synchronous connecting rod 31 and a top plate between the movable trolleys 25;
thirdly, as shown in fig. 7, the bridge removal crane 1 is erected and installed: when the first span of the old bridge cast-in-place plate 8 is dismantled, the bridge dismantling crane 1 is installed at the bank side, and from the second span, the temporarily reserved old bridge capping beam 3, the old bridge pier stud 4 and the old bridge foundation 5 are used as the bearing foundation of the bridge dismantling crane 1, and the bridge dismantling crane 1 is erected on the old bridge capping beam 3 by using the anchoring rod 2;
fourthly, as shown in fig. 1 and 8, before segmental dismantling, the bridge dismantling crane 1 is pre-connected with the old bridge dismantling unit 10 to be dismantled by using a hoisting cable 7, the movable trolley 25 is moved to the position below the old bridge dismantling unit 10 to be dismantled and is braked, so that the first top plate 22 props against the old bridge dismantling unit 10 to be dismantled, the second top plate 23 props against the adjacent unit 10 to be dismantled, then explosives are installed in blast holes 20, the flyrock protective net 30 is covered, segmental dismantling is carried out by adopting a static blasting technology, the bridge dismantling crane 1 is sequentially lowered into a transport vehicle 9 on the bridge floor and is transported to a dismantling workshop for detailed dismantling;
the operations are repeated to finish the dismantling work of the old bridge cast-in-place plate 8 of one span, then the synchronous connecting rods 31 and the top plate on the bridge dismantling crane 1 and the movable trolley 25 are dismantled, the crane is moved to the next span to erect and install, and the dismantling work of the old bridge cast-in-place plate 8 is carried out again until the dismantling work of all bridge floors is finished;
3) as shown in fig. 9, the mobile supporting protection system and the bridge dismantling crane 1 are dismantled, the floating vessel crane 18 is transferred to the river, the hanging hole 21 is drilled on the old bridge capping beam 3, the hanging hole 21 is connected with the hook 6 on the floating vessel crane 18 by using the hanging rope 7 for pre-connection, then the connecting part of the old bridge capping beam 3 and the old bridge pier stud 4 is cut, and finally the old bridge capping beam 3 is hoisted away and transported to a dismantling workshop for detailed dismantling;
4) and (3) dismantling the old bridge pier stud 4 and the old bridge foundation 5 by adopting a static blasting technology, hoisting to a specified place by using a floating crane 18 for detailed dismantling, and finally cleaning the river channel 11 to complete the construction of the old bridge ecological dismantling structure.
Claims (6)
1. The utility model provides an ecological structure of demolising of old bridge which characterized in that: the device comprises a bridge dismantling crane (1), an anchoring rod (2), an old bridge capping beam (3), an old bridge pier stud (4), an old bridge foundation (5), a lifting hook (6), a lifting rope (7), an old bridge cast-in-place plate (8), a transport vehicle (9), an old bridge dismantling unit (10), a guardrail dismantling and stabilizing device (13), a pontoon crane (18), a dismantling unit dividing line (19), a blast hole (20), a lifting hole (21), a flying stone protective net (30) and a movable type supporting protective system; an old bridge pier column (4) is arranged at the upper part of the old bridge foundation (5), an old bridge coping (3) is arranged at the upper part of the old bridge pier column (4), and an old bridge cast-in-place plate (8) is erected at the upper part of the old bridge coping (3); the guardrail dismounting and stabilizing device (13) comprises a stabilizing inclined rod (14), a stabilizing hook (15), a bolt (16) and a base (17), wherein the stabilizing hook (15) is connected with the upper end of the stabilizing inclined rod (14), the lower end of the stabilizing inclined rod (14) is connected with the base (17) with a bolt hole, and the base (17) is fixedly connected with an old bridge cast-in-place plate (8) through the bolt (16); the bridge dismantling crane (1) is arranged on an old bridge capping beam (3) through an anchoring rod (2), the old bridge cast-in-place plate (8) forms a plurality of old bridge dismantling units (10) by arranging dismantling unit dividing lines (19), lifting holes (21) are arranged at four corners of each old bridge dismantling unit (10), blast holes (20) are arranged on the dismantling unit dividing lines (19), a flyrock protective net (30) is covered and arranged in the area of the dismantling unit dividing lines (19), one end of each lifting cable (7) is connected with each lifting hole (21), the other end of each lifting cable is connected with each lifting hook (6) on the bridge dismantling crane (1), the transport vehicle (9) is arranged on the old bridge cast-in-place plate (8), and the pontoon crane (18) is arranged in a river channel (11); the movable supporting protection system comprises a first top plate (22), a second top plate (23), a lifting device (24), a movable trolley (25), a track (26), a transverse sleeper beam (27), a steel corbel (28), an arched Berea beam (29) and a synchronous connecting rod (31), the steel brackets (28) are arranged on two sides of the old bridge pier column (4), an arched Bailey beam (29) is arranged between the adjacent steel brackets (28) on the same side, a transverse sleeper beam (27) is arranged on the arched Bailey beam (29), a track (26) is arranged on the transverse sleeper beam (27), a moving trolley (25) is arranged on the track (26), a lifting device (24) is arranged on the moving trolley (25), the top of the lifting device (24) is sequentially provided with a first top plate (22) and a second top plate (23), the synchronous connecting rods (31) are arranged between the movable trolleys (25) on two sides of the old bridge pier column (4) in a crossed mode.
2. The ecological demolition structure of an old bridge according to claim 1, characterized in that: the shape of the stabilizing hook (15) is the same as the shape of the top of the old bridge guardrail (12) at the edge of the old bridge cast-in-place plate (8).
3. The ecological demolition structure of an old bridge according to claim 1, characterized in that: old bridge bent cap (3), old bridge pier stud (4) and old bridge foundation (5) for the temporary retention structure, as the basis of erectting bridge removal loop wheel machine (1).
4. The ecological demolition structure of an old bridge according to claim 1, characterized in that: the length of the movable trolley (25) is equal to the length of the two old bridge dismantling units (10).
5. The ecological demolition structure of an old bridge according to claim 1, characterized in that: the first top plate (22) and the second top plate (23) are arranged below the old bridge dismantling unit (10) in a whole length mode, the first top plate (22) is arranged below the old bridge dismantling unit (10) to be dismantled, and the second top plate (23) is arranged below the adjacent old bridge dismantling unit (10).
6. The ecological demolition structure of an old bridge according to claim 1, characterized in that: the flyrock protective net (30) is of a double-layer structure, the inner layer is a flyrock-preventing steel wire mesh, and the outer layer is a dustproof fine and dense net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120102214.5U CN214459762U (en) | 2021-01-14 | 2021-01-14 | Old bridge ecological demolition structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120102214.5U CN214459762U (en) | 2021-01-14 | 2021-01-14 | Old bridge ecological demolition structure |
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| CN214459762U true CN214459762U (en) | 2021-10-22 |
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| CN202120102214.5U Active CN214459762U (en) | 2021-01-14 | 2021-01-14 | Old bridge ecological demolition structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746569A (en) * | 2021-01-14 | 2021-05-04 | 湖北省路桥集团有限公司 | Old bridge ecological demolition structure and construction method |
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2021
- 2021-01-14 CN CN202120102214.5U patent/CN214459762U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746569A (en) * | 2021-01-14 | 2021-05-04 | 湖北省路桥集团有限公司 | Old bridge ecological demolition structure and construction method |
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Denomination of utility model: Ecological Demolition Structure of Old Bridges Effective date of registration: 20230927 Granted publication date: 20211022 Pledgee: Industrial Bank Limited by Share Ltd. Wuhan branch Pledgor: HUBEI PROVINCIAL ROAD & BRIDGE Co.,Ltd. Registration number: Y2023980059401 |