CN110042860A - The Construction Method of Metro Station of existing underpass intrusion - Google Patents
The Construction Method of Metro Station of existing underpass intrusion Download PDFInfo
- Publication number
- CN110042860A CN110042860A CN201910317259.1A CN201910317259A CN110042860A CN 110042860 A CN110042860 A CN 110042860A CN 201910317259 A CN201910317259 A CN 201910317259A CN 110042860 A CN110042860 A CN 110042860A
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- construction
- existing
- underpass
- construction method
- intrusion
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses the Construction Method of Metro Station of existing underpass intrusion, comprising the following steps: S1: reinforces existing underpass structure in advance；S2: using rope saw cut method, existing underpass structures are removed；S3: the transformation of existing underpass is encircled and hunted down；S4: pile driving construction is gone along with sb. to guard him within the scope of existing underpass intrusion station structure；S5: restore existing underpass.Construction method disclosed by the invention is suitable for the intrusion existing structure construction of subway station underground main body, using the preparatory construction method for reinforcing underpass structure, saw cut existing buildings of restricting, fully ensure that the stable structure in existing channel and the personnel safety of construction period, speed of application can be accelerated using rope saw cut method construction, shortened the construction period；The existing channel design of not large-scale damage, construction period ensure that the use function in existing channel；Solve existing channel can not overall pulling down, remove object can not bulk transport the problem of, saved time and mechanical, labour.
Description
Technical field
The invention belongs to metro station construction technical field more particularly to a kind of subway stations of existing underpass intrusion
Construction method.
Background technique
In recent years, with the sustainable growth of continuous improvement and the social demand of China's economic level, previous traditional cities
The vehicles have been unable to meet the travel requirement of people, and urban track traffic is convenient, highly-safe with material benefit, comfort is good,
The advantages that speed is fast, pollution level is small, has been to be concerned by more and more people.China carrys out the development of city track traffic engineering this year
Rapidly, but since subway work is generally within city proper, usually intersect with existing building, complicated underground structure is direct
Affect the safe mass, progress, benefit of subway work.And the existing channel flow of the people of hypogee is huge, how to guarantee to apply
Between duration, the stable structure and personnel safety in the existing channel in underground become the key points and difficulties of construction.
Summary of the invention
The present invention provides a kind of Construction Method of Metro Station of existing underpass intrusion, it is intended to solve above-mentioned ask
Topic.
The invention is realized in this way the Construction Method of Metro Station of existing underpass intrusion, comprising the following steps:
S1: existing underpass structure is reinforced in advance；
S2: using rope saw cut method, existing underpass structures are removed；
S3: the transformation of existing underpass is encircled and hunted down；
S4: pile driving construction is gone along with sb. to guard him within the scope of existing underpass intrusion station structure；
S5: restore existing underpass.
Further, the method for reinforcing existing underpass structure in advance includes: installation steel pipe post and building branch
Buttress.
Further, the sequence of construction of the installation steel pipe post include: construction encircle and hunt down → surveying setting-out → pedestal is levelling
→ installing steel pipe support movable end → is installed steel pipe support → erector's beam → application prestressing force → column finishing → dismounting section by section and is enclosed
Gear.
Further, the sequence of construction of the building knee wall includes: measurement and positioning → bar planting → reinforcing bar binding → bracket
Set up → template installation straightening → concrete placings maintenance.
Further, the step S2 includes:
S21: the dismounting sideline of existing underpass structures is determined；
S22: carrying out lifting equipment configuration according to dismounting structure load, determines the concrete construction weight that monolithic is removed；
S23: drilling to the concrete structure of pre-demolition, and reeves in hole and carry out fall arrest reinforcing；
S24: using rope saw cut, the concrete structure of pre-demolition is removed.
Further, in step s 2, dismounting sequence according to ecto-entad, from top to bottom, it is main after first building enclosure
The sequence of body structure carries out piecemeal dismounting.
Further, the step S2 further includes S25: cutting line edge trimming picks out original knot along cutting line edge
Structure reinforcing bar does antirust treatment to reinforcing bar using antirust paint after the completion of picking out.
Further, further includes: existing structure is monitored in the construction process.
Further, the content of the monitoring includes ground settlement and horizontal displacement.
Further, the monitoring uses personal monitoring, and monitoring frequency is 1 times/day.
Compared with prior art, the beneficial effects of the present invention are: construction method disclosed by the invention is suitable for subway station
Underground main body invades existing structure construction, using the preparatory construction party for reinforcing underpass structure, saw cut existing buildings of restricting
Method fully ensures that the stable structure in existing channel and the personnel safety of construction period, can be accelerated using rope saw cut method construction
Speed of application shortens the construction period；The existing channel design of not large-scale damage, construction period ensure that the use function in existing channel；
Using rope saw cut, solve existing channel can not overall pulling down, remove object can not bulk transport the problem of, saved the time and
Mechanical, labour.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
In the description of the present invention, it is to be understood that, term " length ", " width ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.In addition, in the description of the present invention, " multiple "
It is meant that two or more, unless otherwise specifically defined.
The present invention provides a kind of technical solution: the Construction Method of Metro Station of existing underpass intrusion, including following step
It is rapid:
S1: existing underpass structure is reinforced in advance；
S2: using rope saw cut method, existing underpass structures are removed；
S3: the transformation of existing underpass is encircled and hunted down；
S4: pile driving construction is gone along with sb. to guard him within the scope of existing underpass intrusion station structure；
S5: restore existing underpass.
Specifically, first being reinforced to existing underpass, channel is removed using rope sawing, then to underpass
Transformation is encircled and hunted down, and the fender post finally constructed within the scope of existing underpass intrusion station structure is carried out according to process sequence of construction
Each road working procedure is gone along with sb. to guard him pile driving construction until station and is completed, restore existing underpass, meet code requirement, technical standard, protects
Station main body construction progress, safety requirements are demonstrate,proved.
Wherein, it needs to reinforce channel design existing in coverage before removing underpass, first according to design requirement
In the channel portion construction encircle and hunt down after interim steel pipe post is installed, after the completion enclosing bevelling to need removal position create concrete partition wall into
The interim protection of row；
Before construction, first construction area is encircled and hunted down, interim steel pipe post uses finished product bracing members, determines often according to height is reinforced
The length of root temporary support, length will deduct the height of jack and steel plate；Material, thickness equidimension to temporary support of marching into the arena
It is checked, all machine and appliance in scene is checked, it is ensured that all gone well, the steel pipe support and accessory into scene are answered
Classification is stacked, and is kept properly；
After completion underpass is encircled and hunted down, point unwrapping wire is carried out to interim stud, starts that column, column are installed after levelling
It is supported using 609 fished pipe of φ, is attached at the top of column using Two bors d's oeuveres 20a I-steel, apply prestressing force after connecting in place
It holds out against；Sequence of construction are as follows: construction encircles and hunts down → and surveying setting-out → pedestal levelling → installation steel pipe support movable end → installs steel pipe section by section
Support → erector's beam → application prestressing force → column is fitted up → removes enclosing.
After completing the interim steel pipe post of underpass, start Construction Support wall, knee wall is using 250 thick reinforced concrete walls, wall
Body reinforcing bar anchors into underpass bottom plate and top plate, and wall uses C30 microdilatancy concrete, reduces concrete and shrinks bring influence；Construction
Sequentially are as follows: measurement and positioning → bar planting → reinforcing bar binding → bracket sets up → template installation straightening → concrete placings (maintenance).
Concrete knee wall pour finish reach design strength after start carry out underpass structural demolition, for reduce construction disturbance
Existing structure is had an impact safely, removes mode using rope saw cut.
It removes according to ecto-entad, from top to bottom, the sequence of main structure carries out piecemeal dismounting after first building enclosure, and presses
Lifting equipment configuration is carried out according to dismounting structure load, is no more than 0.5t on every piece of cutting size principle, when site operation, according to showing
Field actual conditions appropriate adjustment monolithic concrete cuts size；Diameter is first used to concrete structure in part to be removed before rope saw cut
The drilling of 5cm water drilling, reeves and carries out fall arrest reinforcing, start to cut after hanging device is in place, operation is hung after cutting
Face.
After concrete integral cutting is completed, before concrete block pulls out construction, waste and old wheel is laid on the bottom plate of pull-out direction
Tire makees cushion；For side wall, concrete block is pulled out using 5T fork truck, for top plate, is hung out concrete block using 25T crane, concrete block
It carries out abolishing construction after hanging out boundary of works area.
After the completion of cutting, survey crew discharges cut-sytle pollination line in cut edge position, is returned out and is cut according to measurement control line
Cut edge line is first advisable with not injuring original structure main reinforcement along line joint-cutting, joint-cutting depth is rejected with cutting machine before rejecting, meets side along cutting
Edge picks out original structure reinforcing bar using pneumatic pick, and doing antirust treatment using antirust paint after the completion of picking out makes steel so that the later period restores structure
Muscle welding.
It is encircled and hunted down in channel and is divided into the progress of two phases, the first phase encircles and hunts down channel north half range range, and construction content is northern half range steel
Column；Remove enclosing after construction, carrying out the second phase encircles and hunts down, and encloses and covers channel south half range region and construct concrete partition wall in the region, applies
Northern half range normal pass between duration；Concrete partition wall and steel pipe post remove enclosing in channel after all constructing in channel.Start
Progress ground, which is encircled and hunted down, carries out dismounting and rebuilding construction.
Start carry out ground encircle and hunt down carry out remove and rebuilding construction after, first constructing is not influenced fender post by existing structure, with
This is completed at the same time reinforcing and rebuilding construction in channel, carries out 1:1 slope excavation by the outside of channel and top and (reserves 2m wide operation horizontal
Platform), underpass fender post is carried out while excavating and structure is abolished, and place cleaning after abolishing backfills out revolve again
Drilling machine construction platform (berm width is not less than 8m) is dug, invasive channel part is carried out by aforementioned building enclosure construction technology and goes along with sb. to guard him knot
Structure construction.
Construction period is monitored underground connecting pipeline structure, and monitoring content is ground settlement and horizontal displacement.
It goes along with sb. to guard him pile driving construction to the part from reinforcing channel to complete, using personal monitoring, monitoring frequency is 1 times/day；
With it is traditional artificial abolish construction compared with, rope saw construction method reduce artificial investment, saved manpower, improve
Construction efficiency accelerates construction progress, and shortens the duration, reduces construction cost, achieves good economic benefit, using rope sawing
Engineering method is cut up to 12 ㎡/day, and it is traditional artificial abolish engineering method only 6 ㎡/day daily, 6 ㎡/day, overall pulling down work can be shortened the construction period
Phase shortens half；
Meanwhile saw engineering method operation of restricting is driven by electronic or hydraulic device, construction noise is extremely low, and is wet work, can be compared with
Good control dustiness dye, influences surrounding enviroment smaller；
And need operator few, and labor intensity is reduced, it is easy to operate safe and reliable, have overload protection etc. is automatic to protect
Protective function can maximally reduce the generation of personal injury accident, and the component after cutting is regular, can be disposable with crane
Entrucking transhipment appears on the scene.
Notch is linear incision, and construction section can be made more neat, the point-device dismounting part-structure of energy, while
It is convenient when structure need to be restored or be transformed that a series of processing such as reinforcing bar rejecting, dabbing, bar planting are carried out to section；Saw cut equipment of restricting is dynamic
Power is powerful, and operating efficiency is high, can significantly improve operating rate compared to other dismounting modes to shorten construction period, further
Reduce labor cost；The safe and reliable and stability of hydraulic system itself, greatly reduces the cost depletions of construction equipment；
The disturbance of diamond rope saw cutting operation is extremely low, can save the stability and safety of existing structure to the full extent.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. the Construction Method of Metro Station of existing underpass intrusion, which comprises the following steps:
S1: existing underpass structure is reinforced in advance；
S2: using rope saw cut method, existing underpass structures are removed；
S3: the transformation of existing underpass is encircled and hunted down；
S4: pile driving construction is gone along with sb. to guard him within the scope of existing underpass intrusion station structure；
S5: restore existing underpass.
2. construction method according to claim 1, which is characterized in that the side for reinforcing existing underpass structure in advance
Method includes: installation steel pipe post and building knee wall.
3. construction method according to claim 2, which is characterized in that it is described installation steel pipe post sequence of construction include:
Construction encircles and hunts down → surveying setting-out → pedestal levelling → installation steel pipe support movable end → install section by section steel pipe support → erector's beam →
Apply prestressing force → column is fitted up → and removes enclosing.
4. construction method according to claim 2, which is characterized in that the sequence of construction of the building knee wall includes: to survey
Amount positioning → bar planting → reinforcing bar binding → bracket sets up → template installation straightening → concrete placings maintenance.
5. construction method according to claim 1, which is characterized in that the step S2 includes:
S21: the dismounting sideline of existing underpass structures is determined；
S22: carrying out lifting equipment configuration according to dismounting structure load, determines the concrete construction weight that monolithic is removed；
S23: drilling to the concrete structure of pre-demolition, and reeves in hole and carry out fall arrest reinforcing；
S24: using rope saw cut, the concrete structure of pre-demolition is removed.
6. construction method according to claim 5, it is characterised in that: in step s 2, the dismounting sequence is according to by outer
Inwardly, from top to bottom, after first building enclosure the sequence of main structure carries out piecemeal dismounting.
7. construction method according to claim 5, which is characterized in that the step S2 further includes S25: cutting line edge
Finishing, picks out original structure reinforcing bar along cutting line edge, does antirust treatment to reinforcing bar using antirust paint after the completion of picking out.
8. construction method according to claim 1, which is characterized in that further include: in the construction process to existing structure into
Row monitoring.
9. construction method according to claim 8, it is characterised in that: the content of the monitoring includes ground settlement and structure
Horizontal displacement.
10. construction method according to claim 8, it is characterised in that: the monitoring uses personal monitoring, and monitoring frequency is
1 times/day.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317259.1A CN110042860A (en) | 2019-04-19 | 2019-04-19 | The Construction Method of Metro Station of existing underpass intrusion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317259.1A CN110042860A (en) | 2019-04-19 | 2019-04-19 | The Construction Method of Metro Station of existing underpass intrusion |
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| CN110042860A true CN110042860A (en) | 2019-07-23 |
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| CN201910317259.1A Pending CN110042860A (en) | 2019-04-19 | 2019-04-19 | The Construction Method of Metro Station of existing underpass intrusion |
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| CN110965584A (en) * | 2019-12-23 | 2020-04-07 | 中铁十二局集团第二工程有限公司 | Access and exit earthwork excavation and passage opening concrete breaking synchronous construction method |
| CN112482809A (en) * | 2020-11-24 | 2021-03-12 | 中铁四局集团第二工程有限公司 | In-situ rapid reconstruction and upgrade construction method for existing operation railway station |
| CN113279295A (en) * | 2021-05-13 | 2021-08-20 | 中铁五局集团成都工程有限责任公司 | Construction traffic fluffing method for narrow urban road station in famous-region tourist area |
| CN114961336A (en) * | 2022-07-06 | 2022-08-30 | 中铁四局集团有限公司 | Protective demolition construction method for basement pile foundation next to existing subway line |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965584A (en) * | 2019-12-23 | 2020-04-07 | 中铁十二局集团第二工程有限公司 | Access and exit earthwork excavation and passage opening concrete breaking synchronous construction method |
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| CN113279295A (en) * | 2021-05-13 | 2021-08-20 | 中铁五局集团成都工程有限责任公司 | Construction traffic fluffing method for narrow urban road station in famous-region tourist area |
| CN114961336A (en) * | 2022-07-06 | 2022-08-30 | 中铁四局集团有限公司 | Protective demolition construction method for basement pile foundation next to existing subway line |
| CN114961336B (en) * | 2022-07-06 | 2023-10-10 | 中铁四局集团有限公司 | Protective demolition construction method for foundation pile of basement close to existing subway line |
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Effective date of registration: 20200715 Address after: Office building of China Railway No.5 Bureau, No.309, Shaoshan North Road, Changsha City, Hunan Province Applicant after: CHINA RAILWAY NO.5 ENGINEERING GROUP Co.,Ltd. Applicant after: CHINA RAILWAY NO.5 ENGINEERING GROUP CHENGDU ENGINEERING Co.,Ltd. Address before: 610091 No. 2 Building, Area E, Industrial Headquarters Base, Qingyang District, Chengdu City, Sichuan Province (No. 51 Tengfei Avenue) Applicant before: CHINA RAILWAY NO.5 ENGINEERING GROUP CHENGDU ENGINEERING Co.,Ltd. |
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