CN204311457U - A kind of Metro station excavation excavation construction composite retaining structure system - Google Patents

A kind of Metro station excavation excavation construction composite retaining structure system Download PDF

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Publication number
CN204311457U
CN204311457U CN201420788586.8U CN201420788586U CN204311457U CN 204311457 U CN204311457 U CN 204311457U CN 201420788586 U CN201420788586 U CN 201420788586U CN 204311457 U CN204311457 U CN 204311457U
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China
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supporting
steel pipe
sump
steel
tracks
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秦文
任霄
刘义立
任高峰
李晓燕
张涛
朱朋刚
张玉
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China Railway 20th Bureau Group Corp
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China Railway 20th Bureau Group Corp
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Abstract

The utility model discloses a kind of Metro station excavation excavation construction composite retaining structure system, institute's Metro Excavation station pit comprises upper sump body and lower sump body, this composite retaining structure system comprises carries out the top supporting and protection structure of supporting to upper sump body and lower sump body is carried out to the bottom supporting and protection structure of supporting, and top supporting and protection structure comprises the prestress anchorage cable that multiple tracks is laid from front to back along the surrounding excavating sideline of upper sump body; Bottom supporting and protection structure comprise multiple lay from front to back along the surrounding excavating sideline of lower sump body fender post, be positioned at the Guan Liang above multiple fender post and be supported in the inner support system of lower sump body together; Inner support system comprises multiple inner supporting structure laid from top to bottom, and multiple described inner supporting structure all lays in level and it is inner support structure of steel tube.Simple, the reasonable in design and easy construction of the utility model structure, supporting effect are good, can solve the various problems that supporting scheme that existing fender post combines with steel bar concrete inner support exists.

Description

A kind of Metro station excavation excavation construction composite retaining structure system
Technical field
The utility model belongs to Excavation Construction field, especially relates to a kind of Metro station excavation excavation construction composite retaining structure system.
Background technology
Along with the development of domestic city urban rail transit construction, subway engineering will there will be the situation of many circuit transfers, the form at station is also varied, open-cut station all has advantage from investment and progress, but open-cut station affects by surrounding enviroment restriction and traffic dispersion, and must take strong supporting measure, especially special-shaped foundation ditch will more occur, make the pattern foundation pit supporting structure measures and methods of open-cut station particularly important, and difficulty of construction is larger.As adopted cut and cover method, 13345m is about to an excavation gross area 2and the deep foundation ditch that maximum cutting depth is about 26m is when excavating, for guaranteeing that excavation carries out safely, the supporting scheme that usual employing fender post combines with multiple tracks steel bar concrete inner support carries out supporting, though above-mentioned supporting scheme can meet the requirement of pattern foundation pit supporting structure safety, but adopt the program to there is following defect: the first, steel bar concrete supports needs entirety successively integral construction, need after completing to wait by force to design strength, long construction period; The second, steel bar concrete supported design is close, and simultaneously because span is large, in foundation ditch, vertical temporary support is many, and scantling is large, affect main structure construction, and it is many to water preformed hole after structure; Three, steel bar concrete braced structures size is large, and foundation ditch span is large in addition again, and remove lifting and need Large-scale Hoisting equipment, constructional difficulties, potential safety hazard is large, long in time limit simultaneously; Four, temporary support engineering quantity is large, though can meet security of foundation ditch construction, uneconomical.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of Metro station excavation excavation construction composite retaining structure system is provided, simple, the reasonable in design and easy construction of its structure, supporting effect are good, can solve the various problems that supporting scheme that existing fender post combines with steel bar concrete inner support exists.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of Metro station excavation excavation construction composite retaining structure system, institute's Metro Excavation station pit comprises upper sump body and is positioned at the lower sump body immediately below upper sump body, the excavation area of described lower sump body is less than the excavation area of upper sump body, it is characterized in that: this composite retaining structure system comprises carries out the top supporting and protection structure of supporting to upper sump body and lower sump body is carried out to the bottom supporting and protection structure of supporting, described top supporting and protection structure comprises the prestress anchorage cable that multiple tracks is laid from front to back along the surrounding excavating sideline of upper sump body, prestress anchorage cable described in multiple tracks is all laid in same level and it is anchor cable downward-sloping gradually from the inside to the outside, described bottom supporting and protection structure comprise multiple lay from front to back along the surrounding excavating sideline of lower sump body fender post, be positioned at the Guan Liang above multiple described fender post and be supported in the inner support system of lower sump body together, the top of multiple described fender post is all fastenedly connected with Guan Liang and is integrated, multiple described fender post is all positioned on the surrounding sidewall of lower sump body, multiple described fender post to be all laid in same level and its all in vertically to laying, and the region on the sidewall of described lower sump body between adjacent two the described fender posts in front and back is provided with shotcrete with wire mesh supporting and protection structure, multiple described fender post is reinforced concrete pile, and described Guan Liang is level laying and it is reinforced concrete beam, described inner support system comprises multiple inner supporting structure laid from top to bottom, and multiple described inner supporting structure all lays in level and it is inner support structure of steel tube.
Above-mentioned a kind of Metro station excavation excavation construction composite retaining structure system, it is characterized in that: the quantity of described inner supporting structure is two, two described inner supporting structures are respectively top inner supporting structure and are positioned at the bottom inner supporting structure below the inner supporting structure of described top; Be provided with one deck concrete cushion bottom described lower sump body, the spacing between described bottom inner supporting structure and concrete cushion is 4m ~ 6m, and the spacing between described bottom inner supporting structure and top inner supporting structure is 6m ~ 7m; Prestress anchorage cable described in multiple tracks is all positioned at the middle and lower part of upper sump body.
Above-mentioned a kind of Metro station excavation excavation construction composite retaining structure system, it is characterized in that: the structure of multiple described inner supporting structure is identical, be provided with multiple tracks in described lower sump body from top to bottom and enclose purlin for the steel that multiple described inner supporting structure is fixing respectively, steel described in multiple tracks enclose the structure of purlin all identical and its all lay in level, and steel described in per pass encloses purlin is all laid in same level with fixed inner support structure of steel tube.
Above-mentioned a kind of Metro station excavation excavation construction composite retaining structure system, it is characterized in that: the inner supporting structure being positioned at topmost in multiple described inner supporting structure is top inner supporting structure, described top inner supporting structure and Guan Liang are laid in same level, steel described in multiple tracks encloses in purlin the steel being positioned at topmost, and to enclose purlin be that upper steel encloses purlin, and steel described in multiple tracks encloses in purlin and is bottom steel encloses purlin except the described upper steel steel enclosed except purlin encloses purlin; Described upper steel is enclosed purlin and is fixed on the inside wall of Guan Liang, and described bottom steel encloses purlin and is fixed on the inside wall of multiple described fender post.
Above-mentioned a kind of Metro station excavation excavation construction composite retaining structure system, is characterized in that: multiple described inner supporting structure is steel pipe structure with oblique member.
Above-mentioned a kind of Metro station excavation excavation construction composite retaining structure system, it is characterized in that: described steel pipe structure with oblique member comprises the steel pipe inner supporting be positioned on rear side of lower sump body, multiple tracks is supported in the right side skewed horizontal load steel pipe between right side wall that left side skewed horizontal load steel pipe between the left side wall of steel pipe inner supporting and lower sump body and multiple tracks be supported in steel pipe inner supporting and lower sump body, described in left side skewed horizontal load steel pipe described in multiple tracks and multiple tracks, right side skewed horizontal load steel pipe is all laid in same level with steel pipe inner supporting, and right side skewed horizontal load steel pipe is all positioned on front side of steel pipe inner supporting described in left side skewed horizontal load steel pipe described in multiple tracks and multiple tracks, the outer end of described steel pipe inner supporting is fixed on steel be in same level with it and encloses on purlin inside wall, described in multiple tracks, left side skewed horizontal load steel pipe is laid from left to right, and the left end of left side skewed horizontal load steel pipe described in per pass is all fixed on left side inside wall that steel be in same level with it encloses purlin and its right-hand member is all fixed on the left side front side wall of steel pipe inner supporting, described in multiple tracks, right side skewed horizontal load steel pipe is laid from left to right, and the right-hand member of right side skewed horizontal load steel pipe described in per pass is all fixed on right side inside wall that steel be in same level with it encloses purlin and its left end is all fixed on the right side front side wall of steel pipe inner supporting.
Above-mentioned a kind of Metro station excavation excavation construction composite retaining structure system, is characterized in that: described steel pipe inner supporting, left side skewed horizontal load steel pipe are identical with the structure of right side skewed horizontal load steel pipe and it is laid in the supporting steel pipe composition in same level side by side by two; The diameter of described supporting steel pipe is Φ 550mm ~ Φ 650mm.
Above-mentioned a kind of Metro station excavation excavation construction composite retaining structure system, is characterized in that: described steel pipe inner supporting, left side skewed horizontal load steel pipe and right side skewed horizontal load steel pipe and steel are enclosed between purlin and all carry out being connected or being connected by connecting bolt with welding manner.
Above-mentioned a kind of Metro station excavation excavation construction composite retaining structure system, is characterized in that: the shape that steel described in multiple tracks encloses purlin is all identical with the shape of Guan Liang.
The utility model compared with prior art has the following advantages:
1, structure simple, reasonable in design and drop into construction cost lower.
2, steel bar concrete is not had to support, short construction period.
3, density is little, and vertical temporary support is little, can not affect main structure construction, and it is few to water preformed hole after structure.
4, remove conveniently, constructing operation is simple, and demolishing process potential safety hazard is little.
5, temporary support engineering quantity is little, and input cost is lower, economical and practical.
6, easy construction and supporting effect is good, can carry out firm supporting to institute's excavation pit.
7, prestress anchorage cable is combined with steel pipe inner supporting as inner support system, take full advantage of the strong point of various support pattern, meet pattern foundation pit supporting structure demand, and drastically reduce the area support engineering amount, there is very large economic worth, provide construction space for rear structure construction simultaneously, increase substantially work efficiency.
In sum, simple, the reasonable in design and easy construction of the utility model structure, supporting effect are good, effectively can solve the various problems that supporting scheme that existing fender post combines with steel bar concrete inner support exists.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Description of reference numerals:
1-upper sump body; 2-lower sump body; 3-prestress anchorage cable;
4-fender post; 5-Guan Liang; 7-steel encloses purlin;
8-steel pipe inner supporting; 9-left side skewed horizontal load steel pipe;
10-right side skewed horizontal load steel pipe; 11-concrete cushion.
Detailed description of the invention
As shown in Figure 1, the lower sump body 2 that institute's Metro Excavation station pit comprises upper sump body 1 and is positioned at immediately below upper sump body 1, the excavation area of described lower sump body 2 is less than the excavation area of upper sump body 1, this composite retaining structure system comprises carries out the top supporting and protection structure of supporting to upper sump body 1 and lower sump body 2 is carried out to the bottom supporting and protection structure of supporting, described top supporting and protection structure comprises the prestress anchorage cable 3 that multiple tracks is laid from front to back along the surrounding excavating sideline of upper sump body 1, prestress anchorage cable 3 described in multiple tracks is all laid in same level and it is anchor cable downward-sloping gradually from the inside to the outside.Described bottom supporting and protection structure comprise multiple lay from front to back along the surrounding excavating sideline of lower sump body 2 fender post 4, be positioned at the hat beam 5 above multiple described fender post 4 and be supported in the inner support system of lower sump body 2 together.The top of multiple described fender post 4 is all fastenedly connected with hat beam 5 and is integrated, multiple described fender post 4 is all positioned on the surrounding sidewall of lower sump body 2, multiple described fender post 4 to be all laid in same level and its all in vertically to laying, and the region on the sidewall of described lower sump body 2 between adjacent two the described fender posts 4 in front and back is provided with shotcrete with wire mesh supporting and protection structure.Multiple described fender post 4 is reinforced concrete pile, and described hat beam 5 lays in level and it is reinforced concrete beam; Described inner support system comprises multiple inner supporting structure laid from top to bottom, and multiple described inner supporting structure all lays in level and it is inner support structure of steel tube.
In the present embodiment, the structure of multiple described inner supporting structure is identical, be provided with multiple tracks in described lower sump body 2 from top to bottom and enclose purlin 7 for the steel that multiple described inner supporting structure is fixing respectively, steel described in multiple tracks enclose the structure of purlin 7 all identical and its all lay in level, and steel described in per pass encloses purlin 7 is all laid in same level with fixed inner support structure of steel tube.
During practice of construction, the inner supporting structure being positioned at topmost in multiple described inner supporting structure is top inner supporting structure, described top inner supporting structure is laid in same level with hat beam 5, steel described in multiple tracks encloses the steel being positioned at topmost in purlin 7 and encloses purlin 7 for upper steel and enclose purlin, and steel described in multiple tracks encloses in purlin 7 and is bottom steel encloses purlin except the described upper steel steel enclosed except purlin encloses purlin 7; Described upper steel is enclosed purlin and is fixed on the inside wall of hat beam 5, and described bottom steel encloses purlin and is fixed on the inside wall of multiple described fender post 4.
In the present embodiment, multiple described inner supporting structure is steel pipe structure with oblique member.
And, described steel pipe structure with oblique member comprises the steel pipe inner supporting 8 be positioned on rear side of lower sump body 2, multiple tracks is supported in the right side skewed horizontal load steel pipe 10 between right side wall that left side skewed horizontal load steel pipe 9 between the left side wall of steel pipe inner supporting 8 and lower sump body 2 and multiple tracks be supported in steel pipe inner supporting 8 and lower sump body 2, described in left side skewed horizontal load steel pipe 9 described in multiple tracks and multiple tracks, right side skewed horizontal load steel pipe 10 is all laid in same level with steel pipe inner supporting 8, and right side skewed horizontal load steel pipe 10 is all positioned on front side of steel pipe inner supporting 8 described in left side skewed horizontal load steel pipe 9 described in multiple tracks and multiple tracks.The outer end of described steel pipe inner supporting 8 is fixed on steel be in same level with it and encloses on purlin 7 inside wall.Described in multiple tracks, left side skewed horizontal load steel pipe 9 is laid from left to right, and the left end of left side skewed horizontal load steel pipe 9 described in per pass is all fixed on left side inside wall that steel be in same level with it encloses purlin 7 and its right-hand member is all fixed on the left side front side wall of steel pipe inner supporting 8.Described in multiple tracks, right side skewed horizontal load steel pipe 10 is laid from left to right, and the right-hand member of right side skewed horizontal load steel pipe 10 described in per pass is all fixed on right side inside wall that steel be in same level with it encloses purlin 7 and its left end is all fixed on the right side front side wall of steel pipe inner supporting 8.Meanwhile, the support member that the inner of steel pipe inner supporting 8 is supported is provided with in described lower sump body 2.
During actual use, multiple described inner supporting structure is steel pipe support structure, now, each described inner supporting structure includes multiple horizontal support steel pipe laid from front to back, and the two ends, left and right of each described horizontal support steel pipe are separately fixed at steel be in same level with it and enclose on the left and right sides inside wall of purlin 7.
In the present embodiment, described steel pipe inner supporting 8, left side skewed horizontal load steel pipe 9 are identical with the structure of right side skewed horizontal load steel pipe 10 and it is laid in the supporting steel pipe composition in same level side by side by two.The diameter of described supporting steel pipe is Φ 550mm ~ Φ 650mm.
During practice of construction, described steel pipe inner supporting 8, left side skewed horizontal load steel pipe 9 and right side skewed horizontal load steel pipe 10 and steel are enclosed between purlin 5 and all carry out being connected or being connected by connecting bolt with welding manner.
In the present embodiment, the shape that steel described in multiple tracks encloses purlin 7 is all identical with the shape of hat beam 5.
In the present embodiment, the quantity of described inner supporting structure is two, and two described inner supporting structures are respectively top inner supporting structure and are positioned at the bottom inner supporting structure below the inner supporting structure of described top.Be provided with one deck concrete cushion 11 bottom described lower sump body 2, the spacing between described bottom inner supporting structure and concrete cushion 11 is 4m ~ 6m, and the spacing between described bottom inner supporting structure and top inner supporting structure is 6m ~ 7m; Described in multiple tracks, prestress anchorage cable 3 is all positioned at the middle and lower part of upper sump body 1.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.

Claims (9)

1. a Metro station excavation excavation construction composite retaining structure system, institute's Metro Excavation station pit comprises upper sump body (1) and is positioned at the lower sump body (2) immediately below upper sump body (1), the excavation area of described lower sump body (2) is less than the excavation area of upper sump body (1), it is characterized in that: this composite retaining structure system comprises carries out the top supporting and protection structure of supporting to upper sump body (1) and lower sump body (2) is carried out to the bottom supporting and protection structure of supporting, described top supporting and protection structure comprises the prestress anchorage cable (3) that multiple tracks is laid from front to back along the surrounding excavating sideline of upper sump body (1), prestress anchorage cable described in multiple tracks (3) is all laid in same level and it is anchor cable downward-sloping gradually from the inside to the outside, described bottom supporting and protection structure comprise multiple lay from front to back along the surrounding excavating sideline of lower sump body (2) fender post (4), be positioned at the Guan Liang (5) of multiple described fender post (4) top and be supported in the inner support system of lower sump body (2) together, the top of multiple described fender post (4) is all fastenedly connected with Guan Liang (5) and is integrated, multiple described fender post (4) is all positioned on the surrounding sidewall of lower sump body (2), multiple described fender post (4) to be all laid in same level and its all in vertically to laying, and the region before and after the sidewall of described lower sump body (2) is positioned between adjacent two described fender posts (4) is provided with shotcrete with wire mesh supporting and protection structure, multiple described fender post (4) is reinforced concrete pile, and described Guan Liang (5) lays in level and it is reinforced concrete beam, described inner support system comprises multiple inner supporting structure laid from top to bottom, and multiple described inner supporting structure all lays in level and it is inner support structure of steel tube.
2. according to a kind of Metro station excavation excavation construction composite retaining structure system according to claim 1, it is characterized in that: the quantity of described inner supporting structure is two, two described inner supporting structures are respectively top inner supporting structure and are positioned at the bottom inner supporting structure below the inner supporting structure of described top; Described lower sump body (2) bottom is provided with one deck concrete cushion (11), spacing between described bottom inner supporting structure and concrete cushion (11) is 4m ~ 6m, and the spacing between described bottom inner supporting structure and top inner supporting structure is 6m ~ 7m; Prestress anchorage cable described in multiple tracks (3) is all positioned at the middle and lower part of upper sump body (1).
3. according to a kind of Metro station excavation excavation construction composite retaining structure system described in claim 1 or 2, it is characterized in that: the structure of multiple described inner supporting structure is identical, be provided with multiple tracks in described lower sump body (2) from top to bottom and enclose purlin (7) for the steel that multiple described inner supporting structure is fixing respectively, steel described in multiple tracks enclose the structure of purlin (7) all identical and its all lay in level, and steel described in per pass encloses purlin (7) is all laid in same level with fixed inner support structure of steel tube.
4. according to a kind of Metro station excavation excavation construction composite retaining structure system according to claim 3, it is characterized in that: the inner supporting structure being positioned at topmost in multiple described inner supporting structure is top inner supporting structure, described top inner supporting structure and Guan Liang (5) are laid in same level, steel described in multiple tracks encloses the steel being positioned at topmost in purlin (7) and encloses purlin (7) for upper steel and enclose purlin, and steel described in multiple tracks encloses in purlin (7) and is bottom steel encloses purlin except the described upper steel steel enclosed except purlin encloses purlin (7); Described upper steel is enclosed purlin and is fixed on the inside wall of Guan Liang (5), and described bottom steel encloses purlin and is fixed on the inside wall of multiple described fender post (4).
5., according to a kind of Metro station excavation excavation construction composite retaining structure system according to claim 3, it is characterized in that: multiple described inner supporting structure is steel pipe structure with oblique member.
6. according to a kind of Metro station excavation excavation construction composite retaining structure system according to claim 5, it is characterized in that: described steel pipe structure with oblique member comprises the steel pipe inner supporting (8) being positioned at lower sump body (2) rear side, multiple tracks is supported in right side skewed horizontal load steel pipe (10) between right side wall that left side skewed horizontal load steel pipe (9) between the left side wall of steel pipe inner supporting (8) and lower sump body (2) and multiple tracks be supported in steel pipe inner supporting (8) and lower sump body (2), described in multiple tracks left side skewed horizontal load steel pipe (9) and multiple tracks described on the right side of skewed horizontal load steel pipe (10) be all laid in same level with steel pipe inner supporting (8), and right side skewed horizontal load steel pipe (10) is all positioned on front side of steel pipe inner supporting (8) described in left side skewed horizontal load steel pipe (9) described in multiple tracks and multiple tracks, the outer end of described steel pipe inner supporting (8) is fixed on steel be in same level with it and encloses on purlin (7) inside wall, described in multiple tracks, left side skewed horizontal load steel pipe (9) is laid from left to right, and the left end in left side skewed horizontal load steel pipe (9) described in per pass is all fixed on left side inside wall that steel be in same level with it encloses purlin (7) and its right-hand member is all fixed on the left side front side wall of steel pipe inner supporting (8), described in multiple tracks, right side skewed horizontal load steel pipe (10) is laid from left to right, and the right-hand member on right side skewed horizontal load steel pipe (10) described in per pass is all fixed on right side inside wall that steel be in same level with it encloses purlin (7) and its left end is all fixed on the right side front side wall of steel pipe inner supporting (8).
7. according to a kind of Metro station excavation excavation construction composite retaining structure system according to claim 6, it is characterized in that: described steel pipe inner supporting (8), left side skewed horizontal load steel pipe (9) are identical with the structure on right side skewed horizontal load steel pipe (10) and it is laid in the supporting steel pipe composition in same level side by side by two; The diameter of described supporting steel pipe is Φ 550mm ~ Φ 650mm.
8. according to a kind of Metro station excavation excavation construction composite retaining structure system according to claim 6, it is characterized in that: described steel pipe inner supporting (8), left side skewed horizontal load steel pipe (9) and right side skewed horizontal load steel pipe (10) and steel are enclosed between purlin (5) and all carry out being connected or being connected by connecting bolt with welding manner.
9. according to a kind of Metro station excavation excavation construction composite retaining structure system according to claim 3, it is characterized in that: the shape that steel described in multiple tracks encloses purlin (7) is all identical with the shape of Guan Liang (5).
CN201420788586.8U 2014-12-13 2014-12-13 A kind of Metro station excavation excavation construction composite retaining structure system Active CN204311457U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106193054A (en) * 2016-09-09 2016-12-07 中建三局集团有限公司 A kind of support system for subway foundation pit and construction method thereof
CN106193051A (en) * 2016-08-31 2016-12-07 中铁二十局集团有限公司 Upper-soft lower-hard ground Metro station excavation support system and construction method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106193051A (en) * 2016-08-31 2016-12-07 中铁二十局集团有限公司 Upper-soft lower-hard ground Metro station excavation support system and construction method thereof
CN106193051B (en) * 2016-08-31 2018-07-31 中铁二十局集团有限公司 Upper-soft lower-hard ground Metro station excavation support system and its construction method
CN106193054A (en) * 2016-09-09 2016-12-07 中建三局集团有限公司 A kind of support system for subway foundation pit and construction method thereof
CN106193054B (en) * 2016-09-09 2018-01-16 中建三局集团有限公司 A kind of support system and its construction method for subway foundation pit

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