CN105586985A - Construction method of subway envelop enclosure structure and subway envelop enclosure structure - Google Patents
Construction method of subway envelop enclosure structure and subway envelop enclosure structure Download PDFInfo
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Abstract
The invention provides a construction method of a subway envelop enclosure structure. A two-layer-step-shaped envelop enclosure pile/wall is arranged; a crown beam is constructed in an exposed position of a step joint surface of the envelop enclosure pile/wall; a ring beam is built at the top of the envelop enclosure pile/wall; and finally, a subway top plate is constructed on the crown beam. The invention further provides the subway envelop enclosure structure; the subway envelop enclosure structure comprises the two-layer-step-shaped envelop enclosure pile/wall embedded underground; the crown beam is constructed in the exposed position of the step joint surface of the envelop enclosure pile/wall; the subway top plate is constructed on the crown beam, and is provided with a material filling part; the ring beam is arranged at the top end of the envelop enclosure pile/wall; the top surface of the ring beam is leveled with the ground; and the upper surface of the material filling part is leveled with the top surface of the ring beam. The method and the structure improve the construction operability of a cover and cut-bottom up method under the environment of crossroads, traffic jam, narrow construction fields, no sloping conditions or sandy pebble stratum.
Description
Technical field
The present invention relates to subway work field, particularly a kind of construction method of subway building enclosure and a kind of subway building enclosure.
Background technology
In the downtown area of heavy traffic, while building rail traffic station under the road that can not interrupt for a long time at road traffic, forReduce the impact of construction period on traffic above-ground and business, station structure can adopt digging method construction.
Cap excavation method, according to the step difference of construction, can be divided into lid and dig top and lid digs bottom. Lid digs wherein a kind of form of bottomBeing directly to utilize station agent structure top board, building enclosure and intermediate support stake as stress system, is that recovered part is handed over after earthingLogical; Then tunneling under top board. The conventional way of node connected mode of agent structure top board and building enclosure is subway top board and enclosesProtection structure departs from completely, and it is simply supported slab in the construction stage that lid digs top board, makes side wall waterproof continuous. When construction subway top board, top boardSlope is put in the general employing of above foundation ditch, the mode such as soil nailing or anchor pole of beating is carried out supporting, Guan Liang is reduced to below top board face to this executingWork method at the parting of the ways, traffic congestion, construction site is narrow, without putting slope condition, or in the construction of sand-pebble layer steel sheet pilePlace poor operability, security deficiency.
Summary of the invention
The present invention seeks to, in order to overcome the deficiencies in the prior art, provides a kind of construction method of subway building enclosure, ensures excavationStructural safety during little foundation ditch, construction Guan Liang.
Another object of the present invention is to provide a kind of subway building enclosure.
In order to achieve the above object, the present invention is by the following technical solutions:
A construction method for subway building enclosure, comprises the following steps:
A, determine the size of fender post/wall and build position;
B, pore-forming/groove clear hole/groove; Make steel reinforcement cage, described steel reinforcement cage is provided with the datum level that flushes in ground; Described steel reinforcement cageBe two layers of stepped steel reinforcement cage, comprise ladder junction; In hole/groove, place steel reinforcement cage, the back side of described steel reinforcement cage is for meeting native side;
C, casting concrete for the first time: to steel reinforcement cage casting concrete to ladder junction, form second fender post/wall;
D, by the design of predetermined fender post/wall, fill material portion is set in the exposure position of ladder junction, said fill materialThe upper surface of portion flushes in datum level;
E, casting concrete for the second time; Before the concrete initial set of second fender post/wall, water to steel reinforcement cage more than ladder junctionBuild concrete until datum level forms first fender post/wall.
As preferably, after step e,
F, excavation top board foundation ditch; Guan Liang constructs in the exposure position of ladder junction.
As preferably, after step f,
G, cut behind the pile crown of first fender post or the wall of first enclosure wall top at first fender post/coping construction collar tie beam.
As preferably, after step g,
H, build subway top board.
As preferably, the arbitrary degree of depth of 3.5 meters～5.4 meters of described ladder junction below datum level.
As preferably, described pore-forming mode is manually digging hole, and concrete steps are as follows: the outer rim of building position at fender post is builtTwo-layer retaining wall reinforcing bar, is then building position by manually carrying out borehole.
As preferably, described pore-forming/groove mode is mechanical borehole/groove.
As preferably, while building fender post, the structure of described steel reinforcement cage comprises: ladder junction has a circle to connect by circular boop belowOne-tenth cage reinforcing bar; The one-tenth cage reinforcing bar that ladder junction has a circle to connect by half circular boop above; Steel reinforcement cage more than described ladder junctionIn be provided with some horizontal joint bars, joint bar vertically passes the front of steel reinforcement cage, one-tenth cage reinforcing bar more than ladder junction stretches out datum level.
As preferably, while building enclosure wall, the structure of described steel reinforcement cage comprises: ladder junction has a circle above by rectangle hoopThe one-tenth cage reinforcing bar connecting; The one-tenth cage reinforcing bar that ladder junction has a circle to connect by rectangle hoop below; More than described ladder junctionIn steel reinforcement cage, be provided with some horizontal joint bars, joint bar vertically passes the front of steel reinforcement cage, and one-tenth cage reinforcing bar more than ladder junction stretches outDatum level.
As preferably, in b step, in groove, place some steel reinforcement cages, between two steel reinforcement cages, connect by lacing wire.
As preferably, described fill material portion is made up of cystosepiment, box punching block or wooden model.
A kind of subway building enclosure, comprises the stair-stepping fender post/wall of buried secondary, in the ladder junction of fender post/wallExposure position on be provided with fill material portion.
As preferably, between fill material portion and exposure position, be from bottom to top provided with Guan Liang, subway top board; Described fender post/The top of wall is provided with collar tie beam; Described collar tie beam end face is concordant with ground; The upper surface of described fill material portion is concordant with collar tie beam end face.
As preferably, described fill material portion is made up of cystosepiment, box punching block or wooden model.
As preferably, the arbitrary degree of depth of 3.5 meters～5.4 meters of described ladder junction in below ground.
Compared with prior art, the present invention has following beneficial effect:
By above-mentioned steps and structure, the structural safety during the little foundation ditch of guarantee excavation, construction Guan Liang, top board. Improving lid digs suitableBuild method, at the parting of the ways, traffic congestion, construction site is narrow, without putting slope condition, or under sand-pebble layer environment, constructionOperability.
Brief description of the drawings
Fig. 1 is the schematic diagram of subway building enclosure of the present invention;
When Fig. 2 is the construction method manually digging hole of subway building enclosure of the present invention, the structural representation of the steel reinforcement cage of fender postFigure;
When Fig. 3 is the construction method machinery borehole of subway building enclosure of the present invention, the structural representation of the steel reinforcement cage of fender postFigure;
Fig. 4 is the structural representation of the steel reinforcement cage of enclosure wall of the present invention.
In figure:
1-fender post/wall; 11-first fender post/wall; 12-second fender post/wall; 2-steel reinforcement cage; 21-half circular boop; 22-rectangle hoop; 23-joint bar; 24-lacing wire; 3-Guan Liang; 4-collar tie beam; 5-top board; 6-fill material portion; 7-ground;8-retaining wall reinforcing bar.
Now the invention will be further described with specific embodiment by reference to the accompanying drawings.
Detailed description of the invention
In conjunction with Fig. 1 to Fig. 4, the construction method of a kind of subway building enclosure of the present invention, comprises the following steps successively:
A, determine the size of fender post/wall 1 and build position.
B, pore-forming/groove clear hole/groove; Make steel reinforcement cage 2, steel reinforcement cage 2 is provided with the datum level that flushes in ground 7. Steel reinforcement cage 2Be two layers of stepped steel reinforcement cage, arbitrary degree of depth of 3.5 meters～5.4 meters that ladder junction can be below datum level. In hole/groovePlace steel reinforcement cage 2, the back side of steel reinforcement cage 2 is for meeting native side; In Fig. 1, A side is that native side is met in the back side of steel reinforcement cage 2, and B side isNative side is carried on the back in the front of steel reinforcement cage 2; If the face of C instruction is ladder junction, two layers of stair-stepping two layers of ladder connecting part are rankLadder junction.
Pore-forming mode is divided into manually digging hole and mechanical borehole, and grooving mode is mechanical grooving. Manually digging hole concrete steps are as follows:The outer rim of building position of fender post is built two-layer retaining wall reinforcing bar 8, is then building position by manually carrying out borehole. Machinery digsHole/groove can be used drilling machine borehole/groove.
In conjunction with Fig. 2 and Fig. 3, while building fender post, the structure of steel reinforcement cage 2 comprises: ladder junction has a circle to pass through circular boop belowThe vertical one-tenth cage reinforcing bar connecting; The vertical one-tenth cage reinforcing bar that ladder junction has a circle to connect by half circular boop 21 above; Ladder connectsIn steel reinforcement cage 2 more than face, be provided with some horizontal joint bars 23, joint bar 23 vertically passes the front of steel reinforcement cage, ladder junction withOn one-tenth cage reinforcing bar stretch out datum level.
As shown in Figure 4, while building enclosure wall, steel reinforcement cage 2 structures comprise: ladder junction has a circle above by rectangle hoop 22The vertical one-tenth cage reinforcing bar connecting; The vertical one-tenth cage reinforcing bar that ladder junction has a circle to connect by rectangle hoop 22 below; LadderIn steel reinforcement cage 2 more than junction, be provided with some horizontal joint bars 23, joint bar 23 vertically passes the front of steel reinforcement cage 2, and ladder connectsOne-tenth cage reinforcing bar more than face stretches out datum level. In groove, place between some steel reinforcement cage 2, two steel reinforcement cages 2 and connect by lacing wire 24.
C, casting concrete for the first time: to steel reinforcement cage 2 casting concretes to ladder junction, form second fender post/wall 12;
D, by the design of predetermined fender post/wall, in the upper peace of exposure position (the D portion in Fig. 1 is exposure position) of ladder junctionThe fill material portion 6 that dress is made up of cystosepiment, box punching block or wooden model, the upper surface of fill material portion 6 flushes in datum level;
E, casting concrete for the second time; Before the concrete initial set of second fender post/wall 12, to steel reinforcement cage more than ladder junction2 casting concretes are until datum level forms first fender post/wall 11;
Maintaining pile/the wall being made by two-step pouring be two layers stepped, corresponding with steel reinforcement cage, in Fig. 1, A side is met soil for itSide, B side is carried on the back native side for it, and the face of C instruction is its ladder junction, and D portion is the exposure position of ladder junction.
Complete a-e step, Stability Analysis of Structures can ensure the little foundation ditch of excavation, construction hat beam time, construction safety.
F, excavation top board 5 foundation ditches; Construction hat beam 3 in the exposure position of ladder junction;
G, cut behind the pile crown of first fender post or the wall of first enclosure wall top at the top of first fender post/wall 11 construction collar tie beam 4;
Complete a-f step, can ensure to build subway top board 5 time, Stability Analysis of Structures, construction safety.
H, build subway top board 5.
Complete a-h step, while ensureing to build all the other structures of subway, the construction safety of whole subway station, Stability Analysis of Structures.
While building fender post, b step is pore-forming clear hole, and steel reinforcement cage 2 is placed in hole; While building enclosure wall, b step is for becomingGroove clear groove, steel reinforcement cage 2 is placed in groove.
As shown in Figure 1, be a kind of subway building enclosure of the present invention, comprise the stair-stepping fender post/wall 1 of buried secondary,Hat beam 3 is set in the exposure position of the ladder junction of fender post/wall 1, on hat beam 3, subway top board 5 is set, subway top board 5On cystosepiment, box punching block or wooden model are set; The top of fender post/wall 1 is provided with collar tie beam 4; Collar tie beam 4 end faces are concordant with ground 7;The height that cystosepiment, box punching block or wooden model arrange is concordant with collar tie beam 4 end faces. Ladder junction is in 3.5 meters～5.4 of below groundArbitrary degree of depth of rice. Described subway building enclosure ensures the knot during excavation top board 5 foundation ditches, construction hat beam 3, subway top board 5Structure safety, construction safety.
When subway building enclosure is: comprise the stair-stepping fender post/wall of buried secondary, in the ladder junction of fender post/wallExposure position on be provided with fill material portion. Described subway building enclosure ensures the knot of excavation top board 5 foundation ditches, construction hat beam 3Structure safety, construction safety.
In the present invention:
Cystosepiment, box punching block or wooden model, auxiliary fender post/wall 1 moulding, and easily remove, facilitate construction in later period.
The arbitrary degree of depth of 3.5 meters～5.4 meters of ladder junction below ground (datum level): ladder junction is in this position,The building structure that ensures fender post/wall and top board formation is more stable, makes the stressed more reasonable of fender post/wall, ensures performance gear soilGo along with sb. to guard him effect, also ensure that top board is stressed normal, Stability Analysis of Structures.
The construction method of subway building enclosure of the present invention and subway building enclosure, make lid dig bottom and build subway in friendshipLogical crowded, construction site is narrow, and without putting slope condition, or operability improves under sand-pebble layer steel sheet pile construction environment. ?Subway engineering construction is affected by place or geological conditions cannot to adopt in the conventional situation of putting slope, the construction of steel sheet pile support pattern,Structural safety during guarantee excavation top board 5 foundation ditches, construction hat beam 3, subway top board 5.
The present invention is not limited to above-mentioned embodiment, if various changes of the present invention or modification are not departed to spirit of the present inventionAnd scope, if these are changed and within modification belongs to claim of the present invention and equivalent technologies scope, the present invention is also intended toComprise these changes and variation.
Claims (15)
1. a construction method for subway building enclosure, is characterized in that, comprises the following steps:
A, determine the size of fender post/wall and build position;
B, pore-forming/groove clear hole/groove; Make steel reinforcement cage, described steel reinforcement cage is provided with the datum level that flushes in ground; Described steel reinforcement cageBe two layers of stepped steel reinforcement cage, comprise ladder junction; In hole/groove, place steel reinforcement cage, the back side of described steel reinforcement cage is for meeting native side;
C, casting concrete for the first time: to steel reinforcement cage casting concrete to ladder junction, form second fender post/wall;
D, by the design of predetermined fender post/wall, fill material portion is set in the exposure position of ladder junction, said fill materialThe upper surface of portion flushes in datum level;
E, casting concrete for the second time; Before the concrete initial set of second fender post/wall, water to steel reinforcement cage more than ladder junctionBuild concrete until datum level forms first fender post/wall.
2. the construction method of subway building enclosure according to claim 1, is characterized in that, after step e,
F, excavation top board foundation ditch; Guan Liang constructs in the exposure position of ladder junction.
3. the construction method of subway building enclosure according to claim 2, is characterized in that, after step f,
G, cut behind the pile crown of first fender post or the wall of first enclosure wall top at first fender post/coping construction collar tie beam.
4. the construction method of subway building enclosure according to claim 3, is characterized in that, after step g,
H, build subway top board.
5. the construction method of subway building enclosure according to claim 1, is characterized in that, described ladder junction is in baseArbitrary degree of depth of 3.5 meters～5.4 meters below accurate face.
6. the construction method of subway building enclosure according to claim 1, is characterized in that, described pore-forming mode is artificialBorehole, concrete steps are as follows: build two-layer retaining wall reinforcing bar in the outer rim of building position of fender post, then pass through building positionManually carry out borehole.
7. the construction method of subway building enclosure according to claim 1, is characterized in that, described pore-forming/groove mode isMachinery borehole/groove.
8. according to the construction method of the subway building enclosure described in claim 6 or 7, it is characterized in that, while building fender post,The structure of described steel reinforcement cage comprises: the one-tenth cage reinforcing bar that ladder junction has a circle to connect by circular boop below; Ladder junction has one aboveThe one-tenth cage reinforcing bar that circle connects by half circular boop; In steel reinforcement cage more than described ladder junction, be provided with some horizontal joint bars, joint bar hangs downDirect puncture goes out the front of steel reinforcement cage, and one-tenth cage reinforcing bar more than ladder junction stretches out datum level.
9. the construction method of subway building enclosure according to claim 7, is characterized in that, while building enclosure wall, described inThe structure of steel reinforcement cage comprises: the one-tenth cage reinforcing bar that ladder junction has a circle to connect by rectangle hoop above; Ladder junction has one belowThe one-tenth cage reinforcing bar that circle connects by rectangle hoop; In steel reinforcement cage more than described ladder junction, be provided with some horizontal joint bars, joint barVertically pass the front of steel reinforcement cage, one-tenth cage reinforcing bar more than ladder junction stretches out datum level.
10. the construction method of subway building enclosure according to claim 9, is characterized in that, in b step, in groovePlace some steel reinforcement cages, between two steel reinforcement cages, connect by lacing wire.
The construction method of 11. subway building enclosures according to claim 1, is characterized in that, described fill material portion byCystosepiment, box punching block or wooden model composition.
12. 1 kinds of subway building enclosures, is characterized in that, comprise the stair-stepping fender post/wall of buried secondary, are going along with sb. to guard himIn the exposure position of the ladder junction of stake/wall, be provided with fill material portion.
13. subway building enclosures according to claim 12, is characterized in that, between fill material portion and exposure positionFrom bottom to top be provided with Guan Liang, subway top board; The top of described fender post/wall is provided with collar tie beam; Described collar tie beam end face is concordant with ground;The upper surface of described fill material portion is concordant with collar tie beam end face.
14. according to the subway building enclosure described in claim 12 or 13, it is characterized in that, described fill material portion is by foamPlate, box punching block or wooden model composition.
15. according to the subway building enclosure described in claim 12 or 13, it is characterized in that, described ladder junction is in groundFollowing arbitrary degree of depth of 3.5 meters～5.4 meters.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105951844A (en) * | 2016-06-21 | 2016-09-21 | 中铁第四勘察设计院集团有限公司 | Roof node structure adopting cover-excavation method and construction method of roof node structure |
| CN109137979A (en) * | 2018-09-28 | 2019-01-04 | 中铁第四勘察设计院集团有限公司 | A kind of subway station is inverse to do the full packet waterproof construction of top plate and construction method |
| CN110106919A (en) * | 2019-05-28 | 2019-08-09 | 成都市建筑设计研究院 | A kind of lid digs the building enclosure and its construction method at station |
| CN110820804A (en) * | 2019-11-20 | 2020-02-21 | 西南交通大学 | Half-covered-excavated building structure and method suitable for urban rail transit underground station |
| CN113482021A (en) * | 2021-08-19 | 2021-10-08 | 中铁第六勘察设计院集团有限公司 | Half-pile supporting structure for excavating shallow foundation pit above underground structure floor and construction method |
| CN113718793A (en) * | 2021-09-15 | 2021-11-30 | 中交一公局集团有限公司 | Cover-excavation construction fender post structure and construction method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951844A (en) * | 2016-06-21 | 2016-09-21 | 中铁第四勘察设计院集团有限公司 | Roof node structure adopting cover-excavation method and construction method of roof node structure |
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| CN109137979A (en) * | 2018-09-28 | 2019-01-04 | 中铁第四勘察设计院集团有限公司 | A kind of subway station is inverse to do the full packet waterproof construction of top plate and construction method |
| CN110106919A (en) * | 2019-05-28 | 2019-08-09 | 成都市建筑设计研究院 | A kind of lid digs the building enclosure and its construction method at station |
| CN110820804A (en) * | 2019-11-20 | 2020-02-21 | 西南交通大学 | Half-covered-excavated building structure and method suitable for urban rail transit underground station |
| CN113482021A (en) * | 2021-08-19 | 2021-10-08 | 中铁第六勘察设计院集团有限公司 | Half-pile supporting structure for excavating shallow foundation pit above underground structure floor and construction method |
| CN113718793A (en) * | 2021-09-15 | 2021-11-30 | 中交一公局集团有限公司 | Cover-excavation construction fender post structure and construction method |
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| CN105586985B (en) | 2018-11-20 |
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