CN107178078B - Change to half intercept form block wall construction method of section in subway station - Google Patents

Change to half intercept form block wall construction method of section in subway station Download PDF

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Publication number
CN107178078B
CN107178078B CN201710357511.2A CN201710357511A CN107178078B CN 107178078 B CN107178078 B CN 107178078B CN 201710357511 A CN201710357511 A CN 201710357511A CN 107178078 B CN107178078 B CN 107178078B
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Prior art keywords
block
construction
reinforcement cage
steel reinforcement
conduit
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CN201710357511.2A
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CN107178078A (en
Inventor
吴亚磊
雷明
孙小猛
胡晓东
徐登云
郑永胜
何俊
张维
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Second Engineering Co Ltd of CTCE Group
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Second Engineering Co Ltd of CTCE Group
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18Bulkheads or similar walls made solely of concrete in situ
    • E02D5/187Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints

Abstract

The present invention relates to a kind of subway stations to change to half intercept form block wall construction method of section, belongs to Construction Technique of Underground Works field.Subway station transfer half intercept form block wall construction method of section leads wall the following steps are included: 1) making;2) chute forming machine grooving is utilized;3) construction of width ground-connecting-wall is first opened;4) closure width ground-connecting-wall construction;5) the extra wall of block wall is quickly cut.Subway station transfer half intercept form block wall construction method of section, which efficiently solves half intercept form block wall grooving problem and brush wall problem and realizes extra wall, quickly to be cut.

Description

Change to half intercept form block wall construction method of section in subway station
Technical field
The present invention relates to a kind of subway stations to change to half intercept form block wall construction method of section, belongs to Construction Technique of Underground Works Field.
Background technique
The transfer station of subway " ten " font cross link, transfer section section are generally F3/B3 structure, and and underground Two layers of station simultaneous construction, as shown in Figure 1.Because transfer section is excavated simultaneously with minus two layers of station, need in transfer section and minus two layers Half intercept form block wall is arranged to resist soil body lateral pressure under minus two layers of station bottom plate in station intersection.
Half intercept form block wall is the ground-connecting-wall of a little higher than minus two layers of Foundation Pit bottom absolute altitude of wall top absolute altitude, for this kind of form The construction of ground-connecting-wall, prior art generally use following two mode: 1) block wall is directly poured to designed elevation, more than absolute altitude Slot section element earthen backfill;2) block wall one-piece casting is to earth's surface.
According to the applicant understood: although the first construction method can reduce cubic amount of concrete, difficult, brush wall hardly possible that there are grooving Etc. construction Difficulties, may cause and accompany soil between two width walls, generate serious leakage, to the whole of diaphram wall (block wall) Body also has a significant impact;Although second of construction method grooving and brush wall are easy, concrete is wasted and in excavation of foundation pit mistake It is relatively difficult that extra wall is cut in journey, causes foundation pit exposure duration long, and influences deep pit monitor.Therefore transfer section half blocks How wall constructs as technical problem urgently to be resolved.
Summary of the invention
The technical problem to be solved by the present invention is in view of the shortcomings of the prior art, propose that a kind of grooving and brush wall are easy, can mention High wall quality simultaneously realizes that extra wall quickly cuts subway station transfer half intercept form block wall construction method of section.
The technical solution that the present invention proposes to solve above-mentioned technical problem is: a kind of subway station transfer half intercept form of section closure Wall construction method, comprising the following steps:
1) wall is led in production;
2) chute forming machine grooving is utilized;
3) construction of width ground-connecting-wall is first opened:
First then installation locking notch pipe lifts steel reinforcement cage and enters slot to setting position;
The steel reinforcement cage is welded on upper on block wall steel reinforcement cage when including the block wall steel reinforcement cage and site operation of lower part Portion's hangs muscle system, the steel reinforcement cage are formed with the conduit storehouse that cage bottom is led directly to from its cage top, and the hangs muscle system is equipped with described in connection The pvc pipe of steel reinforcement cage two relative side, the pvc pipe are that horizontally disposed and both ends block the pvc pipe for having foamed glue;
The block wall steel reinforcement cage is entered into slot, then passes through at least two shoulder pole girders by section steel manufacture for block wall reinforcing bar Cage, which is held on, leads on wall, then hangs muscle system is welded above block wall steel reinforcement cage, then removes shoulder pole girder, and decentralization steel reinforcement cage is complete Enter slot entirely;
Enter conduit storehouse by conduit and be poured after design grade concrete to block wall designs top mark height and continues superfilled 3 Then rice pulls out conduit base opening to more than the absolute altitude for blocking wall top, continue to pour concrete lower than design grade to earth's surface, most After extract locking notch pipe;
4) closure width ground-connecting-wall construction:
After grooving first to first open width ground-connecting-wall joint location brush wall handle, then will be located at closure width ground-connecting-wall at described in Block wall steel reinforcement cage enters slot, is then held on block wall reinforcing bar by least two shoulder pole girders by section steel manufacture and leads on wall, Hangs muscle system is welded above block wall reinforcing bar again, then removes shoulder pole girder, decentralization steel reinforcement cage enters slot completely;
Continue superfilled 1 after designing top mark height by concrete to the block wall that conduit enters conduit storehouse and is poured high grade Rice, then pulls out conduit, using plain earthen backfill to earth's surface;
5) the extra wall of block wall is quickly cut:
First opening the extra wall part of width ground-connecting-wall, a plurality of cutting line is set, cutting line spacing is determined according to crane performance, When excavation of foundation pit to a cutting line position, the pvc pipe at this is dug out, the end of pvc pipe is got through and swelling agent is perfused, then seal The end of stifled pvc pipe, further digs out the hangs muscle in the hangs muscle system at this and the reinforcing bar in conduit storehouse, and cut along cutting line It is disconnected, extra wall then is ruptured using the agent of pneumatic pick secondary expansion, finally integrally hangs out concrete block using crane, and outer broken in hole Broken concrete.
The beneficial effect of the present invention by adopting the above technical scheme is: 1) present invention will seal in first opening the construction of width ground-connecting-wall Wall and upper slot section are made as one, in this way, can carry out whole brush wall processing to the joint location for first opening width ground-connecting-wall, it is ensured that The old and new's concrete engagement for blocking wall joint face is close, improves block wall joint quality, prevents to leak;2) present invention will be in head A plurality of cutting line is set in the extra wall of open-width, when excavation pit is to a cutting line position, digs out the pvc pipe at this and filling Filled by expanded agent is used for wall presplitting, while first opening an extra wall is low-grade concrete (C15), can quickly be cut, effectively Ground reduces foundation pit exposure duration, reduces excavation of foundation pit risk.
The improvement of above-mentioned technical proposal is: in step 5), it is disposed with a cutting line in the elevation location for blocking wall top, The pvc pipe at this is dug out when being excavated to this cutting line, and integral cutting is carried out using rope saw.
Above-mentioned technical proposal perfect first is that: in step 3), first open width ground-connecting-wall by conduit and be poured design grade Continue superfilled 3 meters after concrete to block wall design top mark height, the conduit base opening is consistently less than away from the absolute altitude of block wall equal to 1 Rice.
Above-mentioned technical proposal perfect second is that: the internal diameter of the pvc pipe is 2cm, pvc pipe according to 20cm spacing level at Arrangement is set.
Above-mentioned technical proposal perfect third is that: the hangs muscle in the hangs muscle system is Φ 40HPB300 reinforcing bar, described to hang Muscle system is equipped with suspension centre, and the suspension centre is using Φ 40HPB300 reinforcement fabrication and by the suspension centre of transverse weld steel plate reinforcement.
Above-mentioned technical proposal perfect fourth is that: the steel reinforcement cage is apart less than or equal to 50cm with slot bottom.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is subway station transfer section block wall schematic diagram.
Fig. 2 is that the steel reinforcement cage of the embodiment of the present invention enters slot construction schematic diagram.
Fig. 3 be the embodiment of the present invention first open width ground-connecting-wall construction schematic diagram 1.
Fig. 4 be the embodiment of the present invention first open width ground-connecting-wall construction schematic diagram 2.
Fig. 5 be the embodiment of the present invention first open width ground-connecting-wall construction schematic diagram 3.
Fig. 6 is the closure width ground-connecting-wall construction schematic diagram of the embodiment of the present invention.
Specific embodiment
Embodiment
Half intercept form block wall construction method of section is changed in a kind of subway station of the present embodiment, as shown in Fig. 2, including following step It is rapid:
1) wall is led in production;
2) chute forming machine grooving 1 is utilized;
3) construction of width ground-connecting-wall is first opened:
First then installation locking notch pipe 3 lifts steel reinforcement cage 2 and enters slot 1 to setting position;
Steel reinforcement cage 2 is welded on upper on block wall steel reinforcement cage 21 when including the block wall steel reinforcement cage 21 and site operation of lower part Portion's hangs muscle system 22, steel reinforcement cage 2 are formed with the conduit storehouse 23 that cage bottom is led directly to from its cage top, and hangs muscle system 22 is equipped with connection steel reinforcement cage The pvc pipe 24 of 2 two relative sides, pvc pipe 24 are that horizontally disposed and both ends block the pvc pipe for having foamed glue;The PVC of the present embodiment The internal diameter of pipe 24 is 2cm, and pvc pipe 24 is arranged in rows according to 20cm spacing level.
Block wall steel reinforcement cage 21 is entered into slot 1, then passes through at least two shoulder pole girders 25 by section steel manufacture for block wall steel Muscle cage 21, which is held on, leads on wall, then hangs muscle system 22 is welded above block wall steel reinforcement cage 21, then removes shoulder pole girder 25, under It puts steel reinforcement cage 2 and enters slot 1 completely;The steel reinforcement cage 2 of the present embodiment is apart less than or equal to 50cm with 1 bottom of slot.
As shown in Fig. 3, Fig. 4 and Fig. 5: entering conduit storehouse 23 by conduit 4 and be poured design grade concrete to block wall Continue superfilled 3 meters after design top mark high 5, then pull out 4 for base opening of conduit to more than the absolute altitude for blocking wall top, continues to pour lower than setting The concrete of label is counted to earth's surface, finally extracts locking notch pipe 3;The design grade concrete of the present embodiment uses C35, lower than design The concrete of label uses C15 label.
4) closure width ground-connecting-wall construction:
It is as shown in Figure 6: first the joint location brush wall for first opening width ground-connecting-wall to be handled after grooving, then closure width will be located at even Block wall steel reinforcement cage 21 at wall enters slot 1, is then put block wall reinforcing bar by the shoulder pole girder 25 of section steel manufacture by least two It is placed in and leads on wall, then weld hangs muscle system 22 above block wall reinforcing bar, then remove shoulder pole girder 25, decentralization steel reinforcement cage 2 is complete Enter slot 1 entirely;The steel reinforcement cage 2 of the present embodiment is apart less than or equal to 50cm with 1 bottom of slot.
Continue to surpass after designing top mark high 5 to block wall by the concrete that conduit 4 enters conduit storehouse 23 and is poured high grade 1 meter is filled, is then pulled out conduit 4, using plain earthen backfill to earth's surface;
5) the extra wall of block wall is quickly cut:
First opening the extra wall part of width ground-connecting-wall, a plurality of cutting line is set, cutting line spacing is determined according to crane performance, When excavation of foundation pit to a cutting line position, the pvc pipe 24 at this is dug out, the end of pvc pipe 24 is got through and swelling agent is perfused, so The end for blocking pvc pipe 24 afterwards, further digs out the hangs muscle in the hangs muscle system 22 at this and the reinforcing bar in conduit storehouse 23, and It is cut off along cutting line, then ruptures extra wall using the agent of pneumatic pick secondary expansion, finally integrally hang out concrete block using crane, And cheating outer breaking concrete block.
In step 3), after first opening width ground-connecting-wall by the casting design grade concrete to block wall designed elevation of conduit 4 When continuing superfilled 3 meters, 4 base opening of conduit is consistently less than away from the absolute altitude of block wall equal to 1 meter.
In step 5), it is disposed with a cutting line in the elevation location for blocking wall top, when being excavated to this cutting line The pvc pipe 24 at this is dug out, and integral cutting is carried out using rope saw.
Hangs muscle in the hangs muscle system 22 of the present embodiment is Φ 40HPB300 reinforcing bar, and hangs muscle system 22 is equipped with suspension centre 26, hangs Point 26 is using Φ 40HPB300 reinforcement fabrication and by the suspension centre of transverse weld steel plate reinforcement.
The present invention is not limited to the above embodiment.All technical solutions formed using equivalent replacement, are all fallen within the present invention and wanted The protection scope asked.

Claims (5)

1. half intercept form block wall construction method of section is changed in a kind of subway station, which comprises the following steps:
1) wall is led in production;
2) chute forming machine grooving is utilized;
3) construction of width ground-connecting-wall is first opened:
First then installation locking notch pipe lifts steel reinforcement cage and enters slot to setting position;
It hangs on the top that the steel reinforcement cage is welded on block wall steel reinforcement cage when including the block wall steel reinforcement cage and site operation of lower part Muscle system, the steel reinforcement cage are formed with the conduit storehouse that cage bottom is led directly to from its cage top, and the hangs muscle system, which is equipped with, is connected to the reinforcing bar The pvc pipe of cage two relative side, the pvc pipe are that horizontally disposed and both ends block the pvc pipe for having foamed glue;
The block wall steel reinforcement cage is entered into slot, is then put block wall steel reinforcement cage by least two shoulder pole girders by section steel manufacture It is placed in and leads on wall, then weld hangs muscle system above block wall steel reinforcement cage, then remove shoulder pole girder, decentralization steel reinforcement cage enters completely Slot;
Enter conduit storehouse by conduit and be poured after design grade concrete to block wall designs top mark height and continue superfilled 3 meters, so Conduit base opening is pulled out to more than the absolute altitude for blocking wall top afterwards, continues to pour the concrete lower than design grade to earth's surface, finally pulls out Locking notch pipe out;
4) closure width ground-connecting-wall construction:
First the joint location brush wall for first opening width ground-connecting-wall is handled after grooving, then the closure at closure width ground-connecting-wall will be located at Wall steel reinforcement cage enters slot, is then held on block wall reinforcing bar by least two shoulder pole girders by section steel manufacture and leads on wall, then Hangs muscle system is welded above block wall reinforcing bar, then removes shoulder pole girder, and decentralization steel reinforcement cage enters slot completely;
Continue superfilled 1 meter after designing top mark height by concrete to the block wall that conduit enters conduit storehouse and is poured high grade, so Conduit is pulled out afterwards, using plain earthen backfill to earth's surface;
5) the extra wall of block wall is quickly cut:
A plurality of cutting line is set first opening the extra wall part of width ground-connecting-wall, cutting line spacing is determined according to crane performance, foundation pit When being excavated to a cutting line position, the pvc pipe at this is dug out, the end of pvc pipe is got through and swelling agent is perfused, then block The hangs muscle in the hangs muscle system at this and the reinforcing bar in conduit storehouse are further dug out, and is cut along cutting line in the end of pvc pipe It is disconnected, extra wall then is ruptured using the agent of pneumatic pick secondary expansion, finally integrally hangs out concrete block using crane, and outer broken in hole Broken concrete.
2. half intercept form block wall construction method of section is changed in subway station as described in claim 1, it is characterised in that: in step 5) In, it is disposed with a cutting line in the elevation location for blocking wall top, the pvc pipe at this is dug out when being excavated to this cutting line, And integral cutting is carried out using rope saw.
3. half intercept form block wall construction method of section is changed in subway station as claimed in claim 1 or 2, it is characterised in that: in step 3) it in, first opens width ground-connecting-wall and is poured after design grade concrete to block wall designs top mark height by conduit and continue superfilled 3 meters, institute Conduit base opening is stated to be consistently less than away from the absolute altitude of block wall equal to 1 meter.
4. half intercept form block wall construction method of section is changed in subway station as claimed in claim 1 or 2, it is characterised in that: the PVC The internal diameter of pipe is 2cm, and pvc pipe is arranged in rows according to 20cm spacing level.
5. half intercept form block wall construction method of section is changed in subway station as claimed in claim 1 or 2, it is characterised in that: described to hang Hangs muscle in muscle system is Φ 40HPB300 reinforcing bar, and the hangs muscle system is equipped with suspension centre, and the suspension centre is using Φ 40HPB300 Reinforcement fabrication and by the suspension centre of transverse weld steel plate reinforcement.
CN201710357511.2A 2017-05-19 2017-05-19 Change to half intercept form block wall construction method of section in subway station Active CN107178078B (en)

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CN107740387B (en) * 2017-11-21 2020-05-12 湖南湘投清水塘水电开发有限责任公司 Hydroelectric power generation guide wall structure and guide wall dismantling method
CN107829426A (en) * 2017-12-13 2018-03-23 广西大学 A kind of restructuring bankrupt of diaphram wall, forming method and its top of a wall part
CN108360530A (en) * 2018-03-05 2018-08-03 北京建工土木工程有限公司 Diaphram wall blank wall section construction technology at a kind of subway station transfer node

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Publication number Priority date Publication date Assignee Title
JPS6290441A (en) * 1985-10-16 1987-04-24 Shimizu Constr Co Ltd Breaking of extra-banking concrete of continuous underground wall
CN105970916A (en) * 2016-06-30 2016-09-28 中铁十八局集团第五工程有限公司 Construction method for plain concrete underground diaphragm wall of deep foundation pit

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JPS6290441A (en) * 1985-10-16 1987-04-24 Shimizu Constr Co Ltd Breaking of extra-banking concrete of continuous underground wall
CN105970916A (en) * 2016-06-30 2016-09-28 中铁十八局集团第五工程有限公司 Construction method for plain concrete underground diaphragm wall of deep foundation pit

Non-Patent Citations (1)

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