CN107476810B - Back wall structure of pushing device - Google Patents
Back wall structure of pushing device Download PDFInfo
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- CN107476810B CN107476810B CN201710650892.3A CN201710650892A CN107476810B CN 107476810 B CN107476810 B CN 107476810B CN 201710650892 A CN201710650892 A CN 201710650892A CN 107476810 B CN107476810 B CN 107476810B
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- steel skeleton
- pushing device
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- 239000000758 substrate Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 43
- 239000010959 steel Substances 0.000 claims description 43
- 238000009434 installation Methods 0.000 claims description 18
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0621—Shield advancing devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to the technical field of supporting of a pushing device in pipe jacking construction, and discloses a back wall structure of the pushing device, which comprises a plurality of vertical piles and a base plate, wherein the vertical piles are fixedly connected with a foundation, and the upper parts of the vertical piles are fixedly connected with the base plate; the substrate is fixedly provided with at least two parallel side walls, each side wall comprises a left mounting part and a right supporting part, the top surface of each mounting part is lower than the top surface of each supporting part, a step is formed, the top ends of the mounting parts are fixedly connected with the same bottom plate, the left ends of the supporting parts are fixedly connected with the same back plate, the top ends of the supporting parts are fixedly connected with the same top plate, the bottom plate is used for mounting the pushing device, the back plate is used for supporting the pushing device, and the contact position of the force application structure of the pushing device and the back plate corresponds to the left end face of the supporting part. The invention has stable structure, safe and reasonable use and good applicability, and particularly provides stable support guarantee for the pushing device under the condition of no good natural mountain or field limitation, thereby well ensuring the smooth progress of pushing construction.
Description
Technical Field
The invention relates to the technical field of supporting of a pushing device in pipe jacking construction, in particular to a back wall structure of the pushing device.
Background
The pipe jacking method is a non-excavation construction technology, and the basic working principle of the construction technology of the shield pipe jacking method is that a cylindrical steel component is pushed forward along the axis of a tunnel to excavate soil. And the horizontal force of the forward excavation and pushing of the supporting steel assembly is exerted on the back wall by the jack, and the horizontal force is very large.
Generally, the back wall adopted by the shield push pipe method construction process is a natural mountain, and can effectively bear huge horizontal force of the shield jack, so that stress guarantee is provided for pushing construction. However, under certain specific conditions, such as no good natural mountain condition, effective support or deformation control cannot be provided for the shield jack, and the conditions such as site condition limitation and no working space can be provided, and the conditions can limit the arrangement of the back wall so as to influence the smooth progress of the shield jacking pipe construction.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problems, the back wall structure of the pushing device is stable in structure, safe and reasonable in use and good in applicability, and particularly under the condition that no good natural mountain or site condition is limited, stable support guarantee is provided for the pushing device, and smooth pushing construction can be well guaranteed.
The technical scheme adopted by the invention is as follows: the back wall structure of the pushing device comprises a plurality of vertical piles and a base plate, wherein the vertical piles are fixedly connected with a foundation, and the base plate is fixedly connected with the upper parts of the vertical piles; the base plate is fixedly provided with at least two side walls which are parallel to each other, each side wall comprises a left mounting part and a right supporting part, the top surface of each mounting part is lower than the top surface of each supporting part, a step is further formed, the top ends of the mounting parts are fixedly connected with the same base plate, the left ends of the supporting parts are fixedly connected with the same base plate, the top ends of the supporting parts are fixedly connected with the same top plate, the base plate is used for mounting the pushing device, the base plate is used for supporting the pushing device, and the contact position of a force application structure of the pushing device and the base plate corresponds to the left end surface of the supporting part.
According to the back wall structure of the pushing device, the connecting beams are fixedly connected between the side walls, and the side walls are connected in series through the connecting beams.
According to the back wall structure of the pushing device, the connection part of the lower end face of the bottom plate and the mounting part, the connection part of the right end face of the back plate and the supporting part, the connection part of the right end face of the back plate and the lower end face of the top plate and the connection part of the lower end face of the top plate and the supporting part are respectively provided with the armpit adding parts.
According to the back wall structure of the pushing device, the right-angle junction of the mounting part and the supporting part is fixedly connected with the same right-angle hidden beam, the bottom plate and the back plate are respectively and fixedly connected with two sides of the right-angle hidden beam, and the right-angle hidden beam connects the side walls together in series.
According to the back wall structure of the pushing device, the thickness of the bottom plate and the thickness of the back plate are smaller than the thickness of two sides of the right-angle hidden beam, and the connection part of the lower end face of the bottom plate and the right-angle hidden beam and the connection part of the right end face of the back plate and the right-angle hidden beam are respectively provided with an armpit.
The back wall structure of the pushing device is characterized in that the haunching part is of an isosceles right triangle structure.
The back wall structure of the pushing device is characterized in that the bottom plate is fixedly connected with the top end of the mounting part through a rectangular hidden beam, the upper part of the rectangular hidden beam is positioned in the bottom plate, the lower part of the rectangular hidden beam is positioned in the mounting part, and the rectangular hidden beam is arranged along the length direction of the mounting part; the middle part and the top of the supporting part are respectively provided with a rectangular hidden beam, wherein the upper part of the rectangular hidden beam at the top is positioned in the top plate, the lower part of the rectangular hidden beam is positioned in the supporting part, and the rectangular hidden beams are arranged along the length direction of the supporting part; the top end of the backboard is provided with a rectangular hidden beam, and the rectangular hidden beam is arranged along the length direction of the backboard.
The back wall structure of the pushing device is characterized in that steel ribs are fixedly arranged in the upper end of the installation part, in the left end of the installation part and in the right end of the installation part, steel ribs are fixedly arranged in the left end of the support part, and the steel ribs in the left end of the support part and the steel ribs in the right end of the installation part are integrated.
Compared with the prior art, the beneficial effects of adopting the technical scheme are as follows: the invention has stable structure, safe and reasonable use and good applicability, and particularly provides stable support guarantee for the pushing device under the condition of no good natural mountain or field condition limitation, and can well ensure the smooth pushing construction.
Drawings
FIG. 1 is a schematic view of the invention and a pusher assembly;
FIG. 2 is a top view of the present invention;
FIG. 3 is a top view of the present invention with the bottom and top plates removed;
FIG. 4 is an enlarged view at A in FIG. 3;
FIG. 5 is a cross-sectional view taken along line 1-1 of FIG. 2;
FIG. 6 is a cross-sectional view taken along line 2-2 of FIG. 2;
FIG. 7 is a cross-sectional view taken along line 3-3 of FIG. 2;
FIG. 8 is a cross-sectional view taken along line 4-4 of FIG. 2;
FIG. 9 is a schematic view of the structure of the medium-sized steel skeleton of the present invention;
fig. 10 is a schematic diagram of the present invention.
Reference numerals: 1 is a vertical pile, 2 is a base plate, 3 is a mounting part, 4 is a supporting part, 5 is a bottom plate, 6 is a back plate, 7 is a top plate, 8 is a pushing device, 9 is a jack, 10 is a connecting beam, 11 is a haunching part, 12 is a right-angle hidden beam, 13 is a rectangular hidden beam, 14 is a steel skeleton, 15 is a pin, 16 is a stiffening plate, 17 is a hidden post, 18 is a sealing beam, and 19 is a bracket supporting part.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 10, a back wall structure of a pushing device comprises a plurality of vertical piles 1 and a base plate 2, wherein the vertical piles 1 are fixedly connected with a foundation, the foundation fixedly supports the vertical piles 1, and the base plate 2 is fixedly connected with the upper part of the vertical piles 1; the substrate 2 is fixedly provided with at least two side walls which are parallel to each other, the right upper corners of the side walls are connected in series through a sealing beam 18, four side walls are specifically arranged, namely a first side wall, a second side wall, a third side wall and a fourth side wall, the side walls comprise a left mounting part 3 and a right supporting part 4, the left upper corners of the mounting part 3 are connected in series through the sealing beam 18, the top surface of the mounting part 3 is lower than the top surface of the supporting part 4, a step is further formed, the top ends of the mounting part 3 are fixedly connected with the same bottom plate 5, the left ends of the supporting part 4 are fixedly connected with the same back plate 6, the top ends of the supporting part 4 are fixedly connected with the same top plate 7, the right end of the top plate 7 is fixedly connected with the sealing beam 18, the bottom plate 5 is used for mounting the pushing device 8, the back plate 6 is used for supporting the pushing device 8, the force application structure of the pushing device 8 corresponds to the contact position of the backboard 6 and the left end face of the supporting part 4, wherein the pushing device 8 is square frame-shaped, the force application structure is specifically a jack 9 arranged on the vertical edge of the square frame-shaped pushing device 8, a plurality of jacks 9 are arranged at intervals in the length direction of the vertical edge, four jacks 9 are specifically arranged on the two vertical edges, the positions of the jacks 9 on the vertical edge correspond to the left end faces of the side wall II and the side wall III in the middle respectively, namely the force application point positions of the jacks 9 can be projected to the left end faces of the side wall II and the side wall III to the right respectively, a jack 9 is also arranged at the two ends of the transverse edge of the lower part, for the convenience of better supporting the two jacks 9, bracket supporting parts 19 are fixedly arranged on the front end face of the side wall II and the rear end face of the side wall III, and the bracket supporting parts 19 correspond to the jacks 9 at the two ends of the transverse edge respectively; further, connecting beams 10 are fixedly connected between the side walls, the side walls are connected together in series through the connecting beams 10, specifically, three connecting beams 10 are arranged at intervals along the length direction of the supporting part 4, and the connecting beams 10 are positioned in the middle of the supporting part 4; through the arrangement, the square frame-shaped pushing device 8 is arranged on the bottom plate 5, the jack 9 on the square frame-shaped pushing device is in contact with the back plate 6, pushing horizontal force of the jack 9 is uniformly transmitted to the first side wall, the second side wall, the third side wall and the fourth side wall, the middle second side wall and the third side wall are mainly stressed, the first side wall and the fourth side wall play a role in balancing the integral structure, the structural integrity is improved due to the arrangement of the connecting beam 10, the out-of-plane rigidity of each side wall is enhanced, out-of-plane buckling deformation of each side wall is effectively controlled, the whole structure works more balanced and stable, the structural strength is better, and each stressed side wall is fixedly connected with a foundation through the vertical piles 1 and the base plate 2 at the lower part, so that safe and stable support is provided for the pushing device 8.
Further, since the connection between the bottom plate 5 and the mounting portion 3 of each side wall, the connection between the back plate 6 and the supporting portion 4 of each side wall, the connection between the back plate 6 and the top plate 7, and the connection between the top plate 7 and the supporting portion 4 of each side wall all have right angles, the following specific structural arrangement is performed: the connection part of the lower end surface of the bottom plate 5 and the mounting part 3, the connection part of the right end surface of the back plate 6 and the supporting part 4, the connection part of the right end surface of the back plate 6 and the lower end surface of the top plate 7 and the connection part of the lower end surface of the top plate 7 and the supporting part 4 are respectively provided with an armpit 11, specifically, the armpit 11 at the connection part of the lower end surface of the bottom plate 5 and the mounting part 3 is arranged along the length direction (i.e. the left-right direction) of the bottom plate 5, the armpit 11 at the connection part of the right end surface of the back plate 6 and the supporting part 4 is arranged along the height direction (i.e. the up-down direction) of the back plate 6, the armpit 11 at the connection part of the right end surface of the back plate 6 and the lower end surface of the top plate 7 is arranged along the width direction (i.e. the front-back direction) of the top plate 7, the armpit 11 at the connection part of the lower end surface of the top plate 7 and the supporting part 4 is arranged along the length direction (i.e. the left-right direction) of the top plate 7, and the armpit 11 is in an isosceles right triangle structure; the right-angle junctions of the mounting part 3 and the supporting part 4 are fixedly connected with the same right-angle hidden beam 12, the bottom plate 5 and the back plate 6 are respectively and fixedly connected with two sides of the right-angle hidden beam 12, the right-angle hidden beam 12 connects the side walls together in series, the thickness of the bottom plate 5 and the back plate 6 is smaller than that of the two sides of the right-angle hidden beam 12, the connection part of the lower end surface of the bottom plate 5 and the right-angle hidden beam 12 and the connection part of the right end surface of the back plate 6 and the right-angle hidden beam 12 are respectively provided with an armpit 11, the armpit 11 is in an isosceles right-angle triangle structure, and specifically, the connection part of the lower end surface of the bottom plate 5 and the right-angle hidden beam 12 and the armpit 11 at the connection part of the right end surface of the back plate 6 and the right-angle hidden beam 12 are all arranged along the length direction (i.e. front-back direction) of the right-angle hidden beam 12; through the above-mentioned concrete setting, add armpit 11 and make local rigidity increase, effective control stress and deformation, increase the validity of biography power for each structural portion's joint strength is better, and then makes the structural strength of the overall structure that each side wall on base plate 2 upper portion, bottom plate 5, backplate 6 and roof 7 constitute better, and the bearing performance is stronger, has guaranteed that whole structure is when bearing thrustor 8's horizontal thrust, safe and reliable more.
Further, the bottom plate 5 is fixedly connected with the top end of the mounting part 3 through a rectangular hidden beam 13, the upper part of the rectangular hidden beam 13 is positioned in the bottom plate 5, the lower part of the rectangular hidden beam 13 is positioned in the mounting part 3, and the rectangular hidden beam 13 is arranged along the length direction of the mounting part 3; the middle part and the top part of the supporting part 4 are respectively provided with a rectangular hidden beam 13, wherein the upper part of the rectangular hidden beam 13 at the top is positioned in the top plate 7, the lower part of the rectangular hidden beam 13 is positioned in the supporting part 4, and the rectangular hidden beams 13 are arranged along the length direction of the supporting part 4; the top end of the backboard 6 is provided with a rectangular hidden beam 13, and the rectangular hidden beam 13 is arranged along the length direction of the backboard 6; the steel skeleton 14 is fixedly arranged in the upper end, the left end and the right end of the installation part 3, the steel skeleton 14 in the upper end of the installation part 3 is arranged along the length direction of the installation part 3, the upper half part of the steel skeleton 14 is positioned in the bottom plate 5, the steel skeleton 14 in the left end of the installation part 3 is arranged along the height direction of the installation part 3, the upper end of the steel skeleton 14 extends into the bottom plate 5, the lower end of the steel skeleton 14 extends into the substrate 2, the steel skeleton 14 in the right end of the installation part 3 is arranged along the height direction of the installation part 3, the upper end of the steel skeleton 14 extends into the bottom plate 5, the lower end of the steel skeleton 14 extends into the substrate 2, the steel skeleton 14 is fixedly arranged in the left end of the support part 4, the steel rib 14 in the left end of the supporting part 4 is arranged along the height direction of the supporting part 4, the left half part of the steel rib 14 is positioned in the back plate 6, the upper end of the steel rib 14 extends into the top plate 7, the lower end of the steel rib extends into the base plate 2, the steel rib 14 in the left end of the supporting part 4 and the steel rib 14 in the right end of the mounting part 3 are integrated, the steel rib 14 is further arranged in the mounting part 3 and the supporting part 4 of the side wall II and the side wall III in the middle, pins 15 are fixedly arranged on flange plates of the steel rib 14, stiffening plates 16 are fixedly arranged on webs, structural rigidity is increased, bearing capacity is increased, local and integral stability of the structure is enhanced, and force transmission effectiveness is increased; through the specific arrangement, the rectangular hidden beams 13 and the right-angle hidden beams 12 increase the structural integrity, strengthen the out-of-plane rigidity of the side wall, strengthen the horizontal resistance of the side wall and improve the stress distribution; the connecting nodes of each structural component are further correspondingly structurally reinforced, so that the structural strength of the whole structure is better, and the stability is further improved.
Further, each of the mounting portions 3 has a vertical dark column 17 at the left and right ends, and the upper portion of the dark column 17 extends into the bottom plate 5; the left end of each supporting part 4 is provided with a vertical hidden post 17, and the left part of the hidden post 17 extends into the back plate 6 and the upper extending top plate 7; the support parts 4 are also provided with vertical hidden posts 17 at positions corresponding to the connecting beams 10, and the upper parts of the hidden posts 17 extend into the top plate 7; through the arrangement, the structural integrity is further improved, the out-of-plane rigidity of the side wall is enhanced, the horizontal resistance of the side wall is enhanced, and the stress distribution is improved.
The whole structure adopts the structural form of pouring concrete on the main body of the reinforced concrete structure, the rectangular hidden beams 13, the right-angle hidden beams 12 and the hidden columns 17 are also of reinforced concrete structures, but the density of the reinforced bars in the rectangular hidden beams 13, the right-angle hidden beams 12 and the hidden columns 17 is greater than that of the reinforced bars of other main body parts of the side walls, and the reinforced bars in the rectangular hidden beams 13, the right-angle hidden beams 12 and the hidden columns 17 are fastened in a zonal manner by stirrups, and the concrete reinforced bar arrangement density and the stirrup bundling density are specifically arranged according to actual needs, so that the structures of the rectangular hidden beams 13, the right-angle hidden beams 12 and the hidden columns 17 are more compact and firm.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed. It is intended that insubstantial changes or modifications from the invention as described herein be covered by the claims below, as viewed by a person skilled in the art, without departing from the true spirit of the invention.
Claims (6)
1. The utility model provides a back wall structure of thrustor which characterized in that: the foundation pile comprises a plurality of vertical piles (1) and a base plate (2), wherein the vertical piles (1) are fixedly connected with a foundation, and the base plate (2) is fixedly connected to the upper parts of the vertical piles (1); the substrate (2) is fixedly provided with at least two side walls which are parallel to each other, each side wall comprises a left mounting part (3) and a right supporting part (4), the top surface of the mounting part (3) is lower than the top surface of the supporting part (4), a step is further formed, the top ends of the mounting parts (3) are fixedly connected with the same bottom plate (5), the left ends of the supporting parts (4) are fixedly connected with the same back plate (6), the top ends of the supporting parts (4) are fixedly connected with the same top plate (7), the bottom plate (5) is used for mounting a pushing device (8), the back plate (6) is used for supporting the pushing device (8), and the contact position of a force application structure of the pushing device (8) and the back plate (6) corresponds to the left end surface of the supporting part (4); a connecting beam (10) is fixedly connected between the side walls, and the side walls are connected in series through the connecting beam (10);
the pushing device (8) is square, a force application structure is arranged on the vertical edge of the square pushing device (8), the force application structure is specifically a jack (9), a plurality of jacks (9) are arranged at intervals in the length direction of the vertical edge, the positions of the jacks (9) on the vertical edge correspond to the left end faces of the second side wall and the third side wall in the middle respectively, namely the force application point positions of the jacks (9) can be projected to the left end faces of the second side wall and the third side wall to the right respectively, and two jacks (9) are arranged at the two ends of the transverse edge of the lower part respectively;
the steel skeleton (14) is fixedly arranged in the upper end of the installation part (3), the steel skeleton (14) in the upper end of the installation part (3) is arranged along the length direction of the installation part (3), the upper half part of the steel skeleton (14) is positioned in the bottom plate (5), the steel skeleton (14) in the left end of the installation part (3) is arranged along the height direction of the installation part (3), the upper end of the steel skeleton (14) extends into the bottom plate (5), the lower end of the steel skeleton (14) extends into the substrate (2), the steel skeleton (14) in the right end of the installation part (3) is arranged along the height direction of the installation part (3), the upper end of the steel skeleton (14) extends into the bottom plate (5), the lower end of the steel skeleton (14) extends into the substrate (2), the steel skeleton (14) in the left end of the support part (4) is fixedly arranged in the bottom plate (5), the steel skeleton (14) in the left end of the support part (4) is positioned in the height direction of the support part (4), the upper end of the steel skeleton (14) extends into the bottom plate (5), the steel skeleton (14) extends into the two side walls (4) and the steel skeleton (14) in the middle of the three side wall (4) is arranged in the middle of the steel skeleton (4) and the steel skeleton (4) is arranged in the middle of the three side wall (3), pins (15) are fixedly arranged on flange plates of the profile steel bones (14), and stiffening plates (16) are fixedly arranged on webs.
2. The back wall structure of a pusher according to claim 1, wherein: the connecting part of the lower end surface of the bottom plate (5) and the mounting part (3), the connecting part of the right end surface of the back plate (6) and the supporting part (4), the connecting part of the right end surface of the back plate (6) and the lower end surface of the top plate (7) and the connecting part of the lower end surface of the top plate (7) and the supporting part (4) are respectively provided with an armpit adding part (11).
3. The back wall structure of a pushing device according to any one of claims 1 to 2, wherein: the right-angle juncture of the mounting part (3) and the supporting part (4) is fixedly connected with the same right-angle hidden beam (12), the bottom plate (5) and the back plate (6) are respectively fixedly connected with two sides of the right-angle hidden beam (12), and the right-angle hidden beams (12) are used for connecting the side walls together in series.
4. A back wall structure of a pusher according to claim 3, wherein: the thickness of the bottom plate (5) and the thickness of the back plate (6) are smaller than the thicknesses of two sides of the right-angle hidden beam (12), and the connection part of the lower end surface of the bottom plate (5) and the right-angle hidden beam (12) and the connection part of the right end surface of the back plate (6) and the right-angle hidden beam (12) are respectively provided with an armpit (11).
5. The back wall structure of a pusher as set forth in claim 4, wherein: the haunching part (11) is of an isosceles right triangle structure.
6. A back wall structure of a pusher according to claim 3, wherein: the bottom plate (5) is fixedly connected with the top end of the mounting part (3) through a rectangular hidden beam (13), the upper part of the rectangular hidden beam (13) is positioned in the bottom plate (5) and the lower part of the rectangular hidden beam is positioned in the mounting part (3), and the rectangular hidden beam (13) is arranged along the length direction of the mounting part (3); the middle part and the top of the supporting part (4) are respectively provided with a rectangular hidden beam (13), wherein the upper part of the rectangular hidden beam (13) at the top is positioned in the top plate (7) and the lower part of the rectangular hidden beam is positioned in the supporting part (4), and the rectangular hidden beams (13) are arranged along the length direction of the supporting part (4); the top end of the backboard (6) is provided with a rectangular hidden beam (13), and the rectangular hidden beam (13) is arranged along the length direction of the backboard (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710650892.3A CN107476810B (en) | 2017-08-02 | 2017-08-02 | Back wall structure of pushing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710650892.3A CN107476810B (en) | 2017-08-02 | 2017-08-02 | Back wall structure of pushing device |
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| CN107476810A CN107476810A (en) | 2017-12-15 |
| CN107476810B true CN107476810B (en) | 2023-09-26 |
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| CN109827008A (en) * | 2019-02-22 | 2019-05-31 | 上海市基础工程集团有限公司 | For being leaned on after the steel in jacking construction |
| CN112922623B (en) * | 2021-02-04 | 2022-09-30 | 广东省水利水电第三工程局有限公司 | Pipe jacking construction process for mountain tunnel |
| CN115094946A (en) * | 2022-07-05 | 2022-09-23 | 中铁十九局集团有限公司 | Back wall construction method for pipe jacking construction |
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| TW457318B (en) * | 1998-02-23 | 2001-10-01 | Masumi Akamine | Block for retaining wall and method for the construction of retaining wall using the same |
| KR100765976B1 (en) * | 2006-08-16 | 2007-10-12 | 건양씨엔이 (주) | Aquifer base pre-cast concrete box structure for the underway construction and devices that use simplicity freezing propulsion method of construction |
| CN101245603A (en) * | 2008-01-23 | 2008-08-20 | 中国水利水电科学研究院 | Floating arch cofferdam and construction method |
| CN202767281U (en) * | 2012-09-18 | 2013-03-06 | 中国建筑土木建设有限公司路桥分公司 | Assembly type reinforced concrete combination back wall |
| CN103225512A (en) * | 2013-04-27 | 2013-07-31 | 沈阳市政集团有限公司 | Construction method for making prestressed back for box-culvert jacking |
| CN103485363A (en) * | 2013-10-10 | 2014-01-01 | 海南恒鑫土木工程建设有限公司 | Three-dimensional continuous frame type reinforced concrete structure retaining wall |
| CN203808293U (en) * | 2014-05-01 | 2014-09-03 | 西安科技大学 | Vertical connecting structure for prefabricated grid shear wall plate |
| CN104314006A (en) * | 2014-10-08 | 2015-01-28 | 中铁二十四局集团有限公司 | High-performance sliding device oriented to large-tonnage incremental launching engineering |
| CN106014431A (en) * | 2016-07-15 | 2016-10-12 | 中铁第四勘察设计院集团有限公司 | Self-balance type shielding starting structure on plane vacant ground and preparation method thereof |
| CN206175812U (en) * | 2016-10-31 | 2017-05-17 | 中铁二十局集团第五工程有限公司 | Powder sandy soil stratum push pipe construction structures based on steel bushing head instrument pipe |
| CN106930319A (en) * | 2017-05-03 | 2017-07-07 | 中冶沈勘工程技术有限公司 | A kind of high slope framed revetment and its construction method |
| CN207018002U (en) * | 2017-08-02 | 2018-02-16 | 成都市建筑设计研究院 | A kind of back wall construction of thrustor |
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