CN110965584A - Access and exit earthwork excavation and passage opening concrete breaking synchronous construction method - Google Patents
Access and exit earthwork excavation and passage opening concrete breaking synchronous construction method Download PDFInfo
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- CN110965584A CN110965584A CN201911335847.4A CN201911335847A CN110965584A CN 110965584 A CN110965584 A CN 110965584A CN 201911335847 A CN201911335847 A CN 201911335847A CN 110965584 A CN110965584 A CN 110965584A
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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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
- E04G23/082—Wrecking of buildings using shears, breakers, jaws and the like
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Abstract
The invention relates to the technical field of tunnel open cut access construction, in particular to a synchronous construction method for earth excavation of an access and a tunnel opening and concrete removal of the access and the tunnel opening. The method comprises the following steps: and (3) synchronously performing rope saw wire-through hole drilling, installing a rope saw cutting machine, cutting concrete, lifting to the ground for transportation, performing next-layer earthwork excavation, and synchronously manually chiseling a concrete notch to a design position during construction preparation, earthwork excavation and steel support installation. The construction procedures of the method are connected compactly, the whole construction period of the entrance and the exit is effectively reduced, and the cost is saved. The invention is mainly applied to the aspects of tunnel earthwork excavation and channel opening concrete breaking.
Description
Technical Field
The invention relates to the technical field of tunnel open cut access construction, in particular to a synchronous construction method for earth excavation of an access and a tunnel opening and concrete removal of the access and the tunnel opening.
Background
At present, urban subway construction mostly adopts a mode of staged construction of a station main body and an auxiliary access, namely, the access of an auxiliary structure is constructed after the construction of a station main body structure is finished, a common construction method of an open cut access is to reserve a post-cast strip connecting the access and the station main body, and the post-cast strip is constructed after concrete of a station enclosure structure at a passage opening is broken, so that the method has the following problems: the whole construction completion period of the entrance and the exit is long, and because the foundation pit is stopped from dewatering after the post-cast strip is constructed, the dewatering construction cost is increased; the scaffold in the foundation pit at the entrance and exit can be dismantled until the strength of concrete reaches 100%, so that the later concrete breaking operation is interfered, broken concrete is generally high, personnel need to operate at a high place, and the operation difficulty and risk are high; the finished waterproof materials of the bottom plate and the side wall at the inlet and the outlet are easy to damage when concrete is broken away, and the waterproof effect is influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a synchronous construction method for earth excavation of an entrance and an exit and concrete breaking of a passage opening. The method simplifies the process, saves the cost and improves the construction efficiency.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the method for synchronously constructing the earth excavation at the entrance and the exit and the concrete breaking at the passage opening comprises the following steps:
s1, excavating foundation pit earthwork at the entrance and the exit through a passage opening;
s2, erecting the steel supports layer by layer along with earthwork excavation, preferentially installing the steel supports at the position close to the concrete of the passage opening, and drilling through holes in the concrete of the passage opening;
s3, installing and fixing the rope saw cutting machine in the foundation pit at the entrance and the exit;
s4, cutting the concrete layer by layer, and beating reinforcing steel bars into the cutting seams;
s5, tying the cut concrete blocks firmly by using a steel wire rope, dragging the concrete blocks into a foundation pit at an entrance by using a digging machine, and hoisting the concrete blocks out by using a crane;
and S6, after the concrete blocks are lifted out, lifting the cutting machine to the ground, manually removing and chiseling the residual concrete of the cuts to the position of the designed size of the channel opening, starting to perform next-layer earthwork excavation, and performing next-layer concrete removal construction according to the steps.
And in the step S1, the foundation pit earthwork adopts a vertical layered excavation mode.
And in the step S2, drilling at least one through hole on the left side and the right side of each layer of the concrete of the channel opening.
The number of the reinforcing steel bars in the step S4 is subject to the condition that the sawing rope is not clamped.
In the step S6, the remaining concrete is broken by using a pneumatic pick manually.
Compared with the prior art, the invention has the beneficial effects that:
the construction method for synchronously excavating the earthwork at the entrance and the exit and breaking the concrete at the passage opening provided by the invention has the advantages of compact construction procedure connection, high efficiency, effective reduction of the whole construction period of the entrance and the exit, reduction of precipitation period, cost saving, good integrity of waterproof materials, effective guarantee of waterproof effect and suitability for popularization and application.
Drawings
FIG. 1 is a drawing of the construction steps of the present invention;
FIG. 2 is a top plan view of the construction of the present invention;
FIG. 3 is a view taken from the plane A-A of FIG. 2;
FIG. 4 is a construction elevation view of the present invention;
in the figure: the method comprises the following steps of 1, 2, 201, 202, 2, 5, 8 and 8, wherein the foundation pit is an entrance foundation pit, the concrete is a channel opening, the residual concrete is a notch, the concrete is a concrete block, the steel support is 3, the station is 4, the through hole is 5, the cutting joint is 6, the reinforcing steel bar is 7 and the sawing rope is 8.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the method for simultaneously constructing the earth excavation at the entrance and the concrete breaking at the passage opening comprises the following steps:
and (3) dewatering 20 days before the foundation pit is excavated, wherein the water level is below 0.5m at the bottom of the pit after dewatering, and a catch drain is arranged at the position 500mm along the outer side of the foundation pit to prevent surface water from flowing into the foundation pit.
S1, excavating the earthwork of the foundation pit 1 at the entrance and exit in a vertical layered excavation mode from the side of the passage opening to the outside in a layered excavation mode;
s2, synchronously perforating and punching the rope saw 8 when the steel support 3 is installed, erecting the steel support 3 layer by layer along with earthwork excavation, preferentially installing the steel support 3 close to the concrete 2 at the passage port to provide an operation surface for subsequent drilling, and drilling through holes 5 in the concrete 2 at the passage port by a drilling operator;
s3, installing and fixing the rope saw cutting machine in the foundation pit 1 at the entrance and exit;
s4, carrying out layered cutting on the concrete, wherein the height of each layer is not more than 1.5m, so that the overturning of the cut concrete block 202 due to unstable gravity center is prevented, and a plurality of reinforcing steel bars 7 are punched into the cutting joint 6 according to the cutting principle of longitudinal and horizontal cutting;
s5, tying the cut concrete blocks 202 firmly by using steel wire ropes, dragging the cut concrete blocks into the foundation pit 1 at the entrance and the exit by using a digging machine, and hoisting the concrete blocks to the outside of the pit by using a crane and transporting the concrete blocks to a specified place for treatment;
and S6, after the concrete block 202 is lifted out, lifting the cutting machine to the ground, manually chiseling the residual concrete 201 of the cut to the position of the designed size of the channel opening, starting to perform next-layer earthwork excavation, and performing next-layer concrete breaking construction according to the steps.
Preferably, the foundation pit earthwork in the step S1 adopts a vertical layered excavation mode.
Preferably, at least one through hole 5 is drilled in each layer of the left and right sides of the channel concrete 2 in the step S2, and the channel concrete (2) is a ground connecting wall of the enclosure structure of the station (4).
Preferably, the number of the reinforcing bars 7 in the step S4 is determined according to the condition that the sawing rope 8 is not blocked.
Preferably, the cut residual concrete 201 in the step S6 is the diaphragm wall concrete on the back side of the main structure of the station 4, and the cut residual concrete 202 is broken by using a pneumatic pick manually.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (5)
1. The method for synchronously constructing the earth excavation at the entrance and the exit and the concrete breaking at the passage opening is characterized by comprising the following steps of:
s1, excavating foundation pit earthwork at the entrance and the exit through a passage opening;
s2, erecting the steel supports layer by layer along with earthwork excavation, preferentially installing the steel supports at the position close to the concrete of the passage opening, and drilling through holes in the concrete of the passage opening;
s3, installing and fixing the rope saw cutting machine in the foundation pit at the entrance and the exit;
s4, cutting the concrete layer by layer, and beating reinforcing steel bars into the cutting seams;
s5, tying the cut concrete blocks firmly by using a steel wire rope, dragging the concrete blocks into a foundation pit at an entrance by using a digging machine, and hoisting the concrete blocks out by using a crane;
and S6, after the concrete blocks are lifted out, lifting the cutting machine to the ground, manually removing and chiseling the residual concrete of the cuts to the position of the designed size of the channel opening, starting to perform next-layer earthwork excavation, and performing next-layer concrete removal construction according to the steps.
2. The simultaneous construction method for earth excavation at the entrance and exit and concrete breaking at the passage opening according to claim 1, characterized in that: and in the step S1, the foundation pit earthwork adopts a vertical layered excavation mode.
3. The simultaneous construction method for earth excavation at the entrance and exit and concrete breaking at the passage opening according to claim 1, characterized in that: and in the step S2, drilling at least one through hole on the left side and the right side of each layer of the concrete of the channel opening.
4. The simultaneous construction method for earth excavation at the entrance and exit and concrete breaking at the passage opening according to claim 1, characterized in that: the number of the reinforcing steel bars in the step S4 is subject to the condition that the sawing rope is not clamped.
5. The simultaneous construction method for earth excavation at the entrance and exit and concrete breaking at the passage opening according to claim 1, characterized in that: in the step S6, the remaining concrete is broken by using a pneumatic pick manually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911335847.4A CN110965584A (en) | 2019-12-23 | 2019-12-23 | Access and exit earthwork excavation and passage opening concrete breaking synchronous construction method |
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| CN201911335847.4A CN110965584A (en) | 2019-12-23 | 2019-12-23 | Access and exit earthwork excavation and passage opening concrete breaking synchronous construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648248A (en) * | 2020-06-08 | 2020-09-11 | 浙江万里建设工程有限公司 | Method for constructing cliff abutment of rhinestone |
| CN114575332A (en) * | 2022-04-18 | 2022-06-03 | 北京住总集团有限责任公司 | Construction method of underground diaphragm wall at entrance and exit position |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100626328B1 (en) * | 2004-01-20 | 2006-09-20 | 주식회사유신코퍼레이션 | method for extending and removing wall of subway structure in subway service line |
| CN110042860A (en) * | 2019-04-19 | 2019-07-23 | 中铁五局集团成都工程有限责任公司 | The Construction Method of Metro Station of existing underpass intrusion |
| CN110080301A (en) * | 2019-05-13 | 2019-08-02 | 中铁十二局集团第二工程有限公司 | A kind of construction method that subway station underground continuous wall-enclosure structure punches |
| CN110499779A (en) * | 2019-08-15 | 2019-11-26 | 中铁十一局集团城市轨道工程有限公司 | A kind of air channel structure construction method sharing side wall with subway station |
-
2019
- 2019-12-23 CN CN201911335847.4A patent/CN110965584A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100626328B1 (en) * | 2004-01-20 | 2006-09-20 | 주식회사유신코퍼레이션 | method for extending and removing wall of subway structure in subway service line |
| CN110042860A (en) * | 2019-04-19 | 2019-07-23 | 中铁五局集团成都工程有限责任公司 | The Construction Method of Metro Station of existing underpass intrusion |
| CN110080301A (en) * | 2019-05-13 | 2019-08-02 | 中铁十二局集团第二工程有限公司 | A kind of construction method that subway station underground continuous wall-enclosure structure punches |
| CN110499779A (en) * | 2019-08-15 | 2019-11-26 | 中铁十一局集团城市轨道工程有限公司 | A kind of air channel structure construction method sharing side wall with subway station |
Non-Patent Citations (1)
| Title |
|---|
| 廖原时: "《金刚石串珠锯在饰面石材生产中的应用技术》", 31 January 2009, 北京：冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648248A (en) * | 2020-06-08 | 2020-09-11 | 浙江万里建设工程有限公司 | Method for constructing cliff abutment of rhinestone |
| CN114575332A (en) * | 2022-04-18 | 2022-06-03 | 北京住总集团有限责任公司 | Construction method of underground diaphragm wall at entrance and exit position |
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