CN110565549A - New bridge dismantling process for urban viaduct - Google Patents
New bridge dismantling process for urban viaduct Download PDFInfo
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- CN110565549A CN110565549A CN201910918377.8A CN201910918377A CN110565549A CN 110565549 A CN110565549 A CN 110565549A CN 201910918377 A CN201910918377 A CN 201910918377A CN 110565549 A CN110565549 A CN 110565549A
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- bridge
- dismantling
- urban viaduct
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a novel bridge dismantling process for an urban viaduct, relates to the relevant field of urban municipal engineering dismantling, and aims to solve the problems of long construction period, slow progress, more machines, high cost, large dust emission, prominent noise disturbance on residents, large disturbance on the original ground road, large damage and the like in the prior art. The urban viaduct is dismantled through the following steps: s1: performing on-site investigation, and preparing for dismantling: s2: organizing a bridge dismantling construction machine to enter a field: s3: carrying out the breaking of box girder roof plate and roof beam bottom plate through the breaker: s4: and (3) erecting full supports at the positions of the web plate and the cross beam: s5: and cutting and breaking the web plate and the cross beam along the cutting line of the diamond chain by using a diamond chain: s6: the crane transports the partitioned web and the beam distribution truck to the outside: s7: dismantling the full support: s8: and (5) cleaning the site.
Description
Technical Field
The invention relates to the field of urban municipal engineering demolition, in particular to a novel bridge demolishing process for an urban viaduct.
background
Viaducts, i.e. overpasses, a bridge, refers to bridges laid on a series of narrow reinforced concrete or masonry arches, with high-support towers or posts, crossing valleys, rivers, roads or other low obstacles. The structural form of the viaduct must adopt reasonable line shape, height-width ratio and high-span ratio according to the surrounding environment and the aesthetic concept of the bridge.
however, with the prosperous development of cities and the increase of domestic automobiles, viaducts of certain road sections need to be dismantled for reconstruction, and the traditional method is to carry out crusher removal on site, but the traditional bridge dismantling method has the following defects: the traditional bridge dismantling method has the advantages of long construction period, slow progress, more machines and high cost; secondly, the problems of large dust raising and noise disturbing are solved on site, and the construction nearby the city is not facilitated; the removed external reinforcing steel bars and concrete are large in size, the cleaning work is heavy, and the disturbance to the original ground road is large and the damage is large; therefore, the market urgently needs to develop a new bridge dismantling process for urban viaducts to help people to solve the existing problems.
Disclosure of Invention
The invention aims to provide a novel bridge dismantling process for an urban viaduct, which aims to solve the problems of long construction period, slow progress, more machines, high cost, large dust emission, prominent noise disturbance on residents, large disturbance on the original ground road, large damage and the like in the background technology.
in order to achieve the purpose, the invention provides the following technical scheme: the novel bridge dismantling process for the urban viaduct comprises the following steps of:
S1: performing on-site investigation, and preparing for dismantling:
S2: organizing a bridge dismantling construction machine to enter a field:
S3: carrying out the breaking of box girder roof plate and roof beam bottom plate through the breaker:
S4: and (3) erecting full supports at the positions of the web plate and the cross beam:
S5: and cutting and breaking the web plate and the cross beam along the cutting line of the diamond chain by using a diamond chain:
s6: the crane transports the partitioned web and the beam distribution truck to the outside:
s7: dismantling the full support:
S8: and (5) cleaning the site.
Preferably, in S1, the key difficulty of bridge removal for old overhead bridge is controlled during site survey, and a construction scheme is compiled, and experts are organized to demonstrate and perfect the construction scheme.
preferably, in S2, the line and the mechanical erection site are arranged before the bridge removal construction tool enters the field.
preferably, in S3, after the top plate and the bottom plate of the box girder are broken, the broken steel bars and concrete are transported to the outside.
Preferably, in S3, water is sprayed to reduce dust when the top plate and the bottom plate of the box girder are broken.
preferably, in S4, a full hall stand is erected and a safety maintenance net is installed.
preferably, in S5, the web and the beam are dusted by spraying water when they are cut by the diamond chain.
Preferably, in S5, the position of the cutting line of the diamond chain is determined according to a stress scheme of an old overhead frame and a dismantling difficulty scheme.
Preferably, in S6, the outbound segmented web and the outbound beam are removed off-site.
compared with the prior art, the invention has the beneficial effects that:
1. The invention has short demolition period, fast progress, less machinery, low cost and convenient streamlined construction;
2. The construction method has the advantages that the field operation dust emission is less, the dust emission problem is effectively solved by adopting methods such as watering and dust falling, the construction noise only exists in the construction time period of cutting and breaking, and the construction time period of cutting and breaking is much shorter than the traditional breaking and dismantling construction time period, so the construction noise occurrence time is short, the unit cutting time of the construction method is short, the construction can be stopped almost immediately after 6 points, the traditional breaking and dismantling steps are more, machines are more, the good time is long, and the night noise disturbing problem is also properly solved;
3. the invention adopts cutting, hoisting and loading to transport from the construction site, meets the requirements of environmental protection, safety and civilization, has less on-site cleaning workload, less disturbance to the original ground road and less damage;
4. the invention is more environment-friendly, has short construction time on the road surface and weak construction and demolition strength, and most of demolition works in factory buildings or other places far away from the urban area, thereby better meeting the environment-friendly requirement in the construction specification.
Drawings
FIG. 1 is a cutting elevation of the new bridge-erecting process for urban viaduct bridges of the present invention;
Fig. 2 is a cut side view of the new process for removing the bridge of the urban viaduct bridge of the present invention.
Detailed Description
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
referring to fig. 1-2, an embodiment of the present invention is shown: the novel process for dismantling the urban viaduct comprises the following steps:
S1: performing on-site investigation, and preparing for dismantling:
s2: organizing a bridge dismantling construction machine to enter a field:
S3: carrying out the breaking of box girder roof plate and roof beam bottom plate through the breaker:
S4: the full-space support method is a construction method of a scaffold which is densely arranged and erected at certain intervals and plays a supporting role:
S5: the web plate and the cross beam are cut and disconnected along the cutting line of the diamond chain by using the diamond chain to form a small section, and the web plate and the cross beam are lifted in a segmented mode:
S6: the crane transports the partitioned web and the beam distribution truck to the outside:
s7: dismantling the full support, wherein the dismantling operation is carried out layer by layer from top to bottom, and the simultaneous operation of the top and the bottom is strictly forbidden;
S8: and cleaning the site, including careful cleaning of mechanical equipment leaving the site and dismantling the building on the site, cleaning the environment in the space, dismantling the construction enclosure structure of the project, and enabling an organizer to sequentially leave the site according to the construction and the like.
Further, in S1, the key difficulty of bridge removal of the old elevated bridge is controlled during site exploration, a construction scheme is compiled, expert demonstration is organized, and the construction scheme is perfected.
Further, in S2, the lines and the mechanical erection sites are arranged before the bridge dismantling construction machine enters the field, and the arrangement is performed before the construction, so that the total mechanical entering time is saved.
Further, in the step S3, after the box girder top plate and the girder bottom plate are broken, the broken steel bars and concrete are transported outside, and the box girder top plate and the girder bottom plate which are stressed horizontally must be removed first in the box girder structure, which is beneficial to cutting the web plate and the cross beam in the subsequent steps.
Further, in S3, the dust fall of watering when box girder roof and roof beam bottom plate are broken reduces the raise dust phenomenon, can set up on the full hall support of setting up under old overpass face and block the board or block the plastic sheeting, and the dusty soil water when avoiding watering the dust fall directly drips to lower extreme road surface or afforests on, and subsequent clearance effect can be simpler.
further, in S4, a full hall bracket is erected and a safety maintenance net is arranged at the same time, so that the smooth progress of the working face is ensured.
Further, in S5, when the web plate and the cross beam are cut by the rigid chain, water is sprayed for dust reduction, and the intercepting measures set up when the box girder top plate and the girder bottom plate are broken are removed after the operation is finished.
Further, in S5, the position of the cutting line of the diamond chain is determined according to the stress scheme of the old elevated frame and the dismantling difficulty scheme (in this embodiment, as shown in fig. 1 and 2, the position of the cutting line of the diamond chain is at the position of the web, and in this embodiment, the cutting line is uniformly divided, but may be non-uniformly divided during actual construction), and the position of the cutting line of the diamond chain is determined on the construction drawing, during actual operation, the cutting line marking work of the diamond chain is performed on the construction site according to the proportion, and during the cutting process, the measuring instrument is adopted to perform the work calibration, and the calibration is performed while cutting, so as to avoid large deviation of the cutting position, as shown in fig. 2, the web is divided into a first block, a second block, a third block and a fourth block according to the construction scheme, and the web and the beam that are segmented are convenient to be transported outside, so as to avoid noise and breaking time in the site, the construction time is saved, large-scale dust raising is avoided, the on-site cleaning workload is low, the disturbance to the original ground road is low, and the damage is small.
furthermore, in S6, the blocking web and the crossbeam of outward transport are dismantled off-site, and are carried out in the factory building or other places far away from the urban area, because of the setting position of old overhead is former numerous position basically, the personnel of the position are comparatively intensive, buildings such as residential buildings and markets are many, and the measure of abolishing through outward transport is few to personnel' S disturbance, accords with the environmental protection requirement in the construction specification more.
it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The novel bridge dismantling process for the urban viaduct is characterized in that the urban viaduct is dismantled through the following steps:
S1: performing on-site investigation, and preparing for dismantling:
S2: organizing a bridge dismantling construction machine to enter a field:
s3: carrying out the breaking of box girder roof plate and roof beam bottom plate through the breaker:
s4: and (3) erecting full supports at the positions of the web plate and the cross beam:
s5: and cutting and breaking the web plate and the cross beam along the cutting line of the diamond chain by using a diamond chain:
S6: the crane transports the partitioned web and the beam distribution truck to the outside:
S7: dismantling the full support:
S8: and (5) cleaning the site.
2. the new process for dismantling the bridge of the urban viaduct bridge as claimed in claim 1, wherein: in the S1, the key difficulty of bridge removal of the old elevated bridge is controlled during on-site exploration, a construction scheme is compiled, expert demonstration is organized, and the construction scheme is perfected.
3. The new process for dismantling the bridge of the urban viaduct bridge as claimed in claim 1, wherein: in S2, the lines and the mechanical erection sites are arranged before the bridge removal construction tool enters the field.
4. the new process for dismantling the bridge of the urban viaduct bridge as claimed in claim 1, wherein: and in the S3, after the box girder top plate and the girder bottom plate are broken, the broken steel bars and concrete are transported outside.
5. The new process for dismantling the bridge of the urban viaduct bridge as claimed in claim 1, wherein: and in the S3, sprinkling water for dust reduction when the box girder top plate and the girder bottom plate are broken.
6. The new process for dismantling the bridge of the urban viaduct bridge as claimed in claim 1, wherein: and in the step S4, a full hall support is erected and a safety maintenance net is arranged at the same time.
7. The new process for dismantling the bridge of the urban viaduct bridge as claimed in claim 1, wherein: in S5, water is sprayed to reduce dust when the web and the beam are cut by the diamond chain.
8. the new process for dismantling the bridge of the urban viaduct bridge as claimed in claim 1, wherein: in the step S5, the position of the cutting line of the diamond chain is determined according to the stress scheme of the old elevated frame and the dismantling difficulty scheme.
9. the new process for dismantling the bridge of the urban viaduct bridge as claimed in claim 1, wherein: in S6, the block webs and beams to be transported are removed off-site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910918377.8A CN110565549A (en) | 2019-09-26 | 2019-09-26 | New bridge dismantling process for urban viaduct |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910918377.8A CN110565549A (en) | 2019-09-26 | 2019-09-26 | New bridge dismantling process for urban viaduct |
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| CN110565549A true CN110565549A (en) | 2019-12-13 |
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| CN201910918377.8A Pending CN110565549A (en) | 2019-09-26 | 2019-09-26 | New bridge dismantling process for urban viaduct |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984005A (en) * | 2020-01-17 | 2020-04-10 | 广东冠粤路桥有限公司 | Construction method for dismantling and hoisting No. 0 block of bridge |
| CN114855657A (en) * | 2022-06-14 | 2022-08-05 | 保利长大工程有限公司 | Method for quickly dismantling municipal overpass |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005273178A (en) * | 2004-03-23 | 2005-10-06 | Shimizu Corp | Construction method for demolishing and removing viaduct |
| 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 |
| CN107217605A (en) * | 2016-03-21 | 2017-09-29 | 浙江大学 | A kind of continuous beam Demolition Construction method |
| CN206887793U (en) * | 2017-06-27 | 2018-01-16 | 浙江交工集团股份有限公司 | A kind of removable protection network removed for bridge static(al) |
| CN108589564A (en) * | 2018-04-17 | 2018-09-28 | 成都西南交大研究院有限公司 | A kind of bridge static state cutting whole into sections method for dismounting based on non-explosion |
| CN108708305A (en) * | 2018-05-28 | 2018-10-26 | 广西路桥工程集团有限公司 | A kind of construction method of low pier bridging toughening |
| KR101915568B1 (en) * | 2017-05-11 | 2019-01-07 | 나상철 | A contact-type explosive charge for steel box girder bridge |
| CN109208493A (en) * | 2018-09-07 | 2019-01-15 | 南昌大学 | A kind of cross-line single-box multi-cell cast-in-situ steel reinforced concrete bridge superstructure Demolition Construction method |
-
2019
- 2019-09-26 CN CN201910918377.8A patent/CN110565549A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005273178A (en) * | 2004-03-23 | 2005-10-06 | Shimizu Corp | Construction method for demolishing and removing viaduct |
| 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 |
| CN107217605A (en) * | 2016-03-21 | 2017-09-29 | 浙江大学 | A kind of continuous beam Demolition Construction method |
| KR101915568B1 (en) * | 2017-05-11 | 2019-01-07 | 나상철 | A contact-type explosive charge for steel box girder bridge |
| CN206887793U (en) * | 2017-06-27 | 2018-01-16 | 浙江交工集团股份有限公司 | A kind of removable protection network removed for bridge static(al) |
| CN108589564A (en) * | 2018-04-17 | 2018-09-28 | 成都西南交大研究院有限公司 | A kind of bridge static state cutting whole into sections method for dismounting based on non-explosion |
| CN108708305A (en) * | 2018-05-28 | 2018-10-26 | 广西路桥工程集团有限公司 | A kind of construction method of low pier bridging toughening |
| CN109208493A (en) * | 2018-09-07 | 2019-01-15 | 南昌大学 | A kind of cross-line single-box multi-cell cast-in-situ steel reinforced concrete bridge superstructure Demolition Construction method |
Non-Patent Citations (1)
| Title |
|---|
| 刘成章: "《预应力混凝土连续箱梁拆除方法及其结构分析研究》", 《中国优秀硕士学位论文全文数据库工程Ⅱ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984005A (en) * | 2020-01-17 | 2020-04-10 | 广东冠粤路桥有限公司 | Construction method for dismantling and hoisting No. 0 block of bridge |
| CN110984005B (en) * | 2020-01-17 | 2021-11-09 | 广东冠粤路桥有限公司 | Construction method for dismantling and hoisting No. 0 block of bridge |
| CN114855657A (en) * | 2022-06-14 | 2022-08-05 | 保利长大工程有限公司 | Method for quickly dismantling municipal overpass |
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Application publication date: 20191213 |
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| RJ01 | Rejection of invention patent application after publication |