CN105484170A - Jacking construction method for prefabricated frame with inversely arranged oil top on variable ramp - Google Patents
Jacking construction method for prefabricated frame with inversely arranged oil top on variable ramp Download PDFInfo
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- CN105484170A CN105484170A CN201510944195.XA CN201510944195A CN105484170A CN 105484170 A CN105484170 A CN 105484170A CN 201510944195 A CN201510944195 A CN 201510944195A CN 105484170 A CN105484170 A CN 105484170A
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- 238000010276 construction Methods 0.000 title claims abstract description 34
- 238000013461 design Methods 0.000 claims abstract description 22
- 230000008859 change Effects 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 62
- 230000005540 biological transmission Effects 0.000 claims description 44
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 7
- 101100532451 Rattus norvegicus Slc22a17 gene Proteins 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 17
- 238000012546 transfer Methods 0.000 abstract description 6
- 230000007704 transition Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 14
- 230000006378 damage Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a jacking construction method for a prefabricated frame with an inversely arranged oil top on a variable ramp. The method comprises the following steps: arranging a weak transition section at a gradient change point, namely breaking a concrete slide way to form a weak section of a soil foundation; inversely arranging the oil top at one end of the prefabricated frame, arranging a rear seat of the oil top in a mode of backing on the prefabricated frame, connecting a piston column of the oil top with a force transfer member bar on the back, applying jacking force to the back through the oil top, and enabling the rear seat of the oil top to push the prefabricated frame to move forward for jacking; and jacking the prefabricated frame, dismounting the force transfer member bar, performing following up pouring on step type concrete rear seats, mounting the force transfer member bar, jacking the prefabricated frame, dismounting the force transfer member bar, performing following up pouring on step type concrete rear seats, mounting the force transfer member bar, continuing to jack, and executing the processes circularly until the prefabricated frame is jacked in place according to the design. The jacking construction method for the prefabricated frame with the inversely arranged oil top on the variable ramp, disclosed by the invention, can be used for ensuring continuous and stable jacking construction of the prefabricated frame on the variable ramp.
Description
Technical field
The present invention relates to a kind of precast frame jacking construction method, particularly a kind of top that oils, ramp that becomes is inverted precast frame jacking construction method.
Background technology
For height, row contains engineering undercrossing tunnel, and constructure scheme adopts prefabricated in working pit outside railway bed, and then aerial railway is in place by design jacking.
Precast frame main body online outer prefabricated complete after, find that actual elevation and different design are contained in the built draining in upstream--upstream flow water surface absolute altitude, cannot draining after causing precast frame to be contained building up by design lower than the design flowing water face absolute altitude relating to the newly-built culvert of iron.For solving culvert drainage problem, need to carry out reduction process to relating to iron section culvert design absolute altitude, as calculated, absolute altitude declines and reaches 65cm.Because precast frame completes by former design elevation is prefabricated, precast frame prefabricated section of jacking slideway is formed by former design elevation, takes the constructure scheme of jacking slideway Slope Treatment after repeatedly prioritization scheme is than choosing.Namely, in frame structure jack-in process, descending grade process is carried out to jacking slideway, as shown in Figure 1.
Jack-in process sunykatuib analysis is as follows:
Generally, precast frame jacking slideway and precast frame design bottom surface, place in place and are in same gradient plane, namely design precast frame absolute altitude and determine, unit in charge of construction is again according to design precast frame absolute altitude determination jacking working pit and slide rail scale height.And working pit, slide rail scale height determine and precast frame is prefabricated complete after significantly reduce design absolute altitude in place again situation substantially do not occur, need to adjust jacking slideway, jacking slideway is caused not to be in a gradient, but one becomes hill wash road, and on change hill wash road, to carry out the maximum problem of precast frame bridges and culverts jacking be exactly that the unsettled stress caused of precast frame may damage precast frame, specific as follows:
1, original state: see Fig. 2, precast frame by former design elevation and the gradient prefabricated complete, find after prefabricated that upstream absolute altitude is lower than former design elevation, need to reduction design elevation, reduce height 0.65m.The prefabricated working pit slideway of precast frame and rear the design between precast frame slideway of change adopt slope along connecing, and jacking slideway becomes hill wash road.
2, jacking starts: see Fig. 3,1. precast frame front end is vacant state, along with precast frame reach, precast frame and slideway contacting surface more and more less, it is increasing that slideway subjects the Unit area loading coming from precast frame deadweight, load is more and more concentrated, easily can damage slideway structure, needs to reinforce jacking slideway; 2. precast frame leading portion is in vacant state, under unsettled section of Action of Gravity Field, be equivalent to precast frame be applied with a variable torque, with precast frame " upper knick point " for fulcrum clockwise direction twisting trend, so that all there is tensile stress in precast frame top and bottom end face, may cause the destruction of prefabricated frame structure body.
When 3, being equal in weight to two ends by Fig. 3 jacking, when namely balancing critical condition, see Fig. 4, precast frame generation upset enters ramp: 1. now precast frame bears from two ends and the contrary torsional interaction in equal and opposite in direction, direction, now precast frame tensile stress is maximum, controls by least favorable load; 2. frame structure body is after the upset of side slope point place, and back-end box structure lifts, and jacking oil top has angle with frame structure body, needs to readjust jacking device and arrange; 3. when after precast frame upset, frame structure body not only to the pressure that one, slideway is vertical, also produces the thrust along direction, slope to slideway on inclined slip, may produce and destroy, need to reinforce inclined slip to inclined slip; 4. the above knick point of precast frame is that fulcrum overturns, and the whole weight of precast frame is pressed in knick point place, very easily causes the destruction of upper knick point place slideway, needs to carry out technology consolidation process to upper knick point.
4, see Fig. 5, precast frame is all positioned at ramp: 1. precast frame is not by the effect of moment of flexure, whole inclined slip is except bearing vertical pressure, also need to bear frame structure body and the thrust along direction, slope is produced to slideway, thus destruction is produced to inclined slip, need to reinforce inclined slip; 2. power transmission rod member needs to act on precast frame via knick point, for ensureing that jacking active force meets the demands, need do corresponding technical finesse to power transmission rod member.
5, see Fig. 6, precast frame is close to lower knick point: need to stop precast frame falling tendency, except relying on glide path resistance, also needing to take new line measure, making it to advance along glide path.
6, see Fig. 7, precast frame is through lower knick point: 1. precast frame one end acts on glide path, and one end acts on ramp, forms point load power respectively on glide path, ramp, very easily destroy slideway, also easy carrying precast frame causes damage; 2. descend knick point place unsettled, under gravity, bottom frame structure base plate and top board bottom surface easily forms tensile stress and becomes to destroy to frame structure.
7, see Fig. 8, precast frame enters glide path: precast frame and slideway normally stressed, power transmission rod member is long, and needs through upper and lower two knick points, guarantee the stable and normal work of power transmission rod member in jack-in process.
Tradition jacking structural system, be generally made up of back 1, oil top 2, power transmission rod member 3 etc., for the jacking on single gradient slideway, construction, adopts as Fig. 9 structural system.When jacking slideway is for becoming hill wash road, as Figure 10 shows, when precast frame 4 is through upper knick point (as Fig. 3 and Fig. 4), precast frame 4 rotates, rear end tilts, and power transmission rod member 3 direction is not parallel to precast frame bridges and culverts axis, so that oil top power can not be delivered to precast frame bridges and culverts end by power transmission rod member very well, even also may cause power transmission rod member loss of stability, precast frame jacking construction cannot be proceeded.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind ofly to be guaranteed to become the top that oils, the continous-stable of precast frame jacking construction carries out on hill wash road change ramp and to be inverted precast frame jacking construction method.
In order to solve the problems of the technologies described above, the top that oils, change ramp provided by the invention is inverted precast frame jacking construction method, it is characterized in that: arrange weak changeover portion at knick point, abolishes by this concrete slideway, form the weak location on soil property basis; Be inverted on oil top in precast frame one end, oil pushes up back seat and leans against precast frame and put, and the piston boit on oil top is connected the power of putting on back with power transmission rod member, applies to apply top power to back by oil top, the jacking moved forward by oil top back seat promotion precast frame; Precast frame jacking → dismounting power transmission rod member → follow-up is built step concrete back seat → installation power transmission rod member → precast frame jacking → dismounting power transmission rod member → follow-up and is built step concrete back seat → installation power transmission rod member → continuation jacking, circulation like this, until precast frame puts in place by design jacking.
Each precast frame jacking 8m ~ 10m.
Be provided with an oil in the installation of precast frame rear end and push up the pallet that is inverted, oily overhead is inverted on pallet in You Ding.
Respectively be provided with one steel mesh reinforcement at the front and back contact surface of adjacent step concrete back seat, steel mesh reinforcement is 40mm ~ 60mm apart from the surface protection layer thickness of step concrete back seat.
10mm ~ 30mm steel plate is equipped with between power transmission rod member and step concrete back seat.
After precast frame enters ramp, the stress surface of step concrete back seat does a counter-slope, guarantees that stress surface and power transmission rod member are in plumbness.
Adopt the top that oils, the change ramp of technique scheme to be inverted precast frame jacking construction method, be characterized in:
(1), overcome and to become on hill wash road long because of precast frame top journey and the problem that oblique force transfer rod member is vertically stressed, ensure that the stability of power transmission rod member slenderness ratio and step back seat fully stressed, ensure that and become jacking construction effect on hill wash road;
(2), overcome precast frame after knick point rotates into ramp, can guarantee after precast frame rear end levers up, still can maintain globality and the stability on multiple stage oil top, ensure that and become carrying out continuously of precast frame jacking construction on hill wash road;
(3), the oil top that adopts is inverted pallet, and be inverted in jack-in process at You Ding, oil top can not be corroded by earth or sewage, ensure that the operational excellence of oily top equipment;
(4), be the once brand-new trial in precast frame jacking construction field, when precast frame bridges and culverts embedding compared with dark, cutting depth is large, construction plant is narrow, the periphery amount of moving large, groundwater table higher than conditions such as design elevations and intractability is large time, can consider to improve working pit elevation, adopt change hill wash road mode jacking to put in place.
In sum, the present invention a kind ofly guarantees to become the top that oils, the continous-stable of precast frame jacking construction carries out on hill wash road change ramp and to be inverted precast frame jacking construction method.
Accompanying drawing explanation
Fig. 1 carries out descending grade process schematic diagram to jacking slideway.
Fig. 2 is jack-in process sunykatuib analysis original state schematic diagram.
Fig. 3 is that jack-in process sunykatuib analysis jacking starts schematic diagram.
Fig. 4 is jack-in process sunykatuib analysis balance critical condition schematic diagram.
Fig. 5 is that jack-in process sunykatuib analysis precast frame is all positioned at ramp view.
Fig. 6 is that jack-in process sunykatuib analysis precast frame is close to lower knick point schematic diagram.
Fig. 7 is that jack-in process sunykatuib analysis precast frame is through lower knick point schematic diagram.
Fig. 8 is that jack-in process sunykatuib analysis precast frame enters glide path schematic diagram.
Fig. 9 is traditional jacking structural system schematic diagram.
Figure 10 is that traditional jacking structural system uses schematic diagram.
Figure 11 is primary prospect figure of the present invention.
Figure 12 is Bettering id eas figure of the present invention.
Figure 13 is the top view of step concrete back seat of the present invention.
Figure 14 be of the present invention before and after knick point place the schematic diagram of weak changeover portion is set.
Figure 15 is the structural representation that oil of the present invention pushes up the pallet that is inverted.
Figure 16 is the structure top view that oil of the present invention pushes up the pallet that is inverted.
Figure 17 is the first circulation schematic diagram of construction sequence of the present invention.
Figure 18 is the second circulation schematic diagram of construction sequence of the present invention.
Figure 19 is the 3rd circulation schematic diagram of construction sequence of the present invention.
Figure 20 is the 4th circulation schematic diagram of construction sequence of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
See Figure 11, oil top 2 is inverted in precast frame 4 one end, the back seat on oil top 2 leans against precast frame 4 and puts, the piston boit on oil top 2 is connected the power of putting on back 1 with power transmission rod member 3, apply to apply top power to back 1 by oil top 2, according to the principle of active force and reaction force, push up 2 back seats by oil and promote the jacking that precast frames 4 move forward.
According to Figure 11 display, on change hill wash road, application oil pushes up the technology that is inverted, and needs to solve following Railway Project:
1. precast frame 4 pushes up journey and reaches 60m, and power transmission rod member 3 is inclined, may cause power transmission rod member 3 loss of stability in jack-in process; Back 1 vertical plane and power transmission rod member 3 out of plumb, cause the loss of top, oil top 2 power, and oil top 2 active forces can not put on precast frame 4 completely, affect the effect of jacking construction;
2. precast frame 4 is after knick point rotates into ramp, and precast frame 4 rear end levers up 0.2m highly nearly, is unfavorable for installation and the jacking operation on rearmounted oil top 2;
3. oil top 2 is inverted in precast frame 4 rear end, be in naked state, not only easily made dirty by earth or sewage, drench impact oil top performance, shorten the application life on oil top 2, and after precast frame 4 tilts via knick point rear end, will be scattered in oil top 2, need to re-start mounting arrangements, and due to the unsettled tilting in precast frame rear end, be also unfavorable for the stable installation on oil top.
1, for primary prospect existing problems 1., step concrete back seat 5 is adopted to follow up, specific practice is: the 3 → follow-up of precast frame 4 jacking 8 ~ 10m → dismounting power transmission rod member is built the 3 → follow-up of step concrete back seat 5 → installation power transmission rod member → precast frame 4 jacking 8 ~ 10m → dismounting power transmission rod member and built step concrete back seat 5 → installation power transmission rod member 3 → continuation jacking 8 ~ 10m, circulate with this analogize → until precast frame 4 puts in place by design jacking, concrete as Figure 12 and Figure 13.
2, for primary prospect existing problems 2., before and after knick point 8, place arranges weak changeover portion 9, abolishes by this concrete slideway 10, forms the weak location on soil property basis, see Figure 14.
Weak changeover portion 9 is set, on the one hand because weak changeover portion 9 geology is weaker, when precast frame 4 is via knick point 8, because weak changeover portion 9 geology is sunk, can contact area be increased, and evenly sink gradually, be unlikely to the unexpected upset causing precast frame 4, and cause the unexpected change of precast frame 4 stress, also reduce stress increasing degree to a certain extent; On the other hand, due to the even sinking of weak changeover portion 9, the height that precast frame 4 rear end tilts can be reduced, after precast frame 4 overturns, be unlikely to the change causing the oil top 2 be inverted.
3, for primary prospect existing problems 3., for solving protection and the integrity issues on oil top 2, be inverted on precast frame 4 rear end mounting design one oil top pallet 11, and oil top 2 is arranged on oil top and is inverted on pallet 11.Oil pushes up the pallet 11 that is inverted and adopts the welding of 10mm ~ 30mm steel plate to make, and is preferably 20mm steel plate, and concrete physical dimension is determined according to the height on precast frame 4 width, oil top 2 and length, sees Figure 15 and Figure 16.
(3) other technologies measure:
1. steel mesh reinforcement is arranged: in jack-in process; for ensureing that the surface of step concrete back seat 5 does not cause concrete surface to be destroyed because top power is excessive; at the front and back contact surface of adjacent step concrete back seat 5; respectively be provided with one steel mesh reinforcement 6; steel mesh reinforcement 6 is 40mm ~ 60mm apart from the surface protection layer thickness of step concrete back seat 5, is preferably 50mm.
2. the setting of steel plate: excessive and destroyed for ensureing the top power of step concrete back seat 5 not because of oil top 2, adds the thick steel plate of 10mm ~ 30mm 7 and protects, be preferably 20mm between power transmission rod member 3 and step concrete back seat 5;
3. the setting of step concrete back seat counter-slope: see Figure 12, after precast frame 4 enters ramp, power transmission rod member 3 is an angle with the stress surface of step concrete back seat 5, the loss of top power may be caused, and very easily cause the unstability of power transmission rod member 3, therefore, carrying out in step concrete back seat 5 work progress, the stress surface of step concrete back seat 5 is done a counter-slope 12, guarantees that stress surface and power transmission rod member 3 are in plumbness.
Construction Technology of With standing Operation general arrangement of the present invention is as follows:
According to the continuous analysis of the jacking precast frame bridge construction scheme that is inverted to oil top, demonstration and optimization, the setting of be inverted pallet use and changeover portion is pushed up by the follow-up of step concrete back seat, oil, substantially solve and carry out the problem that oil pushes up the jacking construction that is inverted on change hill wash road, overall plan is as follows:
First circulation: see Figure 17, when precast frame 4 is positioned at up gradient, settle oil top 2 by Figure 17, power transmission rod member 3 and You Ding are inverted pallet 11, steel plate 7, synchronous averaging oil top 2, because power transmission rod member 3 and back 1 are fixed ends, precast frame 4 is movable ends, is acted on by power transmission rod member 3 and back 1, by precast frame 4 in the direction of arrows jacking move 8 ~ 10m.In jacking moving process, need via weak changeover portion 9, under precast frame 4 Action of Gravity Field, weak changeover portion 9 ground evenly sinks with jacking, not only increases the contact area with ground bottom precast frame 4, and the height that minimizing precast frame 4 rear end levers up.
Second circulation: see Figure 18, after first circulation jacking 8 ~ 10m, remove power transmission rod member 3,8 ~ 10m of the first circulation jacking is passed and adopts concreting step concrete back seat 5, after step concrete back seat 5 reaches intensity, reinstall power transmission rod member 3 and oil top 2, continue jacking 8 ~ 10m;
3rd circulation: see Figure 19, after second circulation jacking 8 ~ 10m, remove power transmission rod member 3,8 ~ 10m of the second circulation jacking is adopted concreting step concrete back seat 5, after step concrete back seat 5 reaches intensity, reinstall power transmission rod member 3 and oil top 2, continue jacking 8 ~ 10m;
4th circulation: see Figure 20, after the 3rd circulation jacking 8 ~ 10m, remove power transmission rod member 3,8 ~ 10m of the 3rd circulation jacking is adopted concreting step concrete back seat 5, after step concrete back seat 5 reaches intensity, reinstall power transmission rod member 3 and oil top 2, continue jacking 8 ~ 10m;
By that analogy, until put in place by design elevation and plane jacking.
Claims (6)
1. become the top that oils, ramp to be inverted a precast frame jacking construction method, it is characterized in that: weak changeover portion is set at knick point, abolish by this concrete slideway, form the weak location on soil property basis; Be inverted on oil top in precast frame one end, oil pushes up back seat and leans against precast frame and put, and the piston boit on oil top is connected the power of putting on back with power transmission rod member, applies to apply top power to back by oil top, the jacking moved forward by oil top back seat promotion precast frame; Precast frame jacking → dismounting power transmission rod member → follow-up is built step concrete back seat → installation power transmission rod member → precast frame jacking → dismounting power transmission rod member → follow-up and is built step concrete back seat → installation power transmission rod member → continuation jacking, circulation like this, until precast frame puts in place by design jacking.
2. the top that oils, change ramp according to claim 1 is inverted precast frame jacking construction method, it is characterized in that: each precast frame jacking 8m ~ 10m.
3. the top that oils, change ramp according to claim 1 and 2 is inverted precast frame jacking construction method, it is characterized in that: install in precast frame rear end and be provided with an oil top and be inverted pallet, oily overhead is inverted on pallet in You Ding.
4. the top that oils, change ramp according to claim 1 and 2 is inverted precast frame jacking construction method; it is characterized in that: be respectively provided with one steel mesh reinforcement at the front and back contact surface of adjacent step concrete back seat, steel mesh reinforcement is 40mm ~ 60mm apart from the surface protection layer thickness of step concrete back seat.
5. the top that oils, change ramp according to claim 1 and 2 is inverted precast frame jacking construction method, it is characterized in that: between power transmission rod member and step concrete back seat, be equipped with 10mm ~ 30mm steel plate.
6. the top that oils, change ramp according to claim 1 and 2 is inverted precast frame jacking construction method, it is characterized in that: after precast frame enters ramp, the stress surface of step concrete back seat does a counter-slope, guarantees that stress surface and power transmission rod member are in plumbness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510944195.XA CN105484170B (en) | 2015-12-16 | 2015-12-16 | One kind becomes the ramp top that oils and inverts precast frame jacking construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510944195.XA CN105484170B (en) | 2015-12-16 | 2015-12-16 | One kind becomes the ramp top that oils and inverts precast frame jacking construction method |
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| Publication Number | Publication Date |
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| CN105484170A true CN105484170A (en) | 2016-04-13 |
| CN105484170B CN105484170B (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510944195.XA Active CN105484170B (en) | 2015-12-16 | 2015-12-16 | One kind becomes the ramp top that oils and inverts precast frame jacking construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0492038A (en) * | 1990-08-07 | 1992-03-25 | Kazuyuki Hiratsuka | Setting machine for concrete drain etc. |
| JPH04108997A (en) * | 1990-08-29 | 1992-04-09 | Komatsu Ltd | Leading pipe direction correcting device for small-bore pipe pusher |
| CN2898194Y (en) * | 2006-02-27 | 2007-05-09 | 上海市机械施工有限公司 | Step-by-step reaction base for hydraulic top pushing |
| CN103032071A (en) * | 2012-12-09 | 2013-04-10 | 中铁十二局集团有限公司 | Shield receiving forward-shift construction method of boulder group open excavation and embedment mutation space |
| CN204570499U (en) * | 2015-03-13 | 2015-08-19 | 中铁二十四局集团有限公司 | A kind of large span vertical curve steel box-girder walking type pushing device |
| CN204703530U (en) * | 2015-05-06 | 2015-10-14 | 上海绿地建设(集团)有限公司 | For the thrustor of Construction of Steel Structure |
-
2015
- 2015-12-16 CN CN201510944195.XA patent/CN105484170B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0492038A (en) * | 1990-08-07 | 1992-03-25 | Kazuyuki Hiratsuka | Setting machine for concrete drain etc. |
| JPH04108997A (en) * | 1990-08-29 | 1992-04-09 | Komatsu Ltd | Leading pipe direction correcting device for small-bore pipe pusher |
| CN2898194Y (en) * | 2006-02-27 | 2007-05-09 | 上海市机械施工有限公司 | Step-by-step reaction base for hydraulic top pushing |
| CN103032071A (en) * | 2012-12-09 | 2013-04-10 | 中铁十二局集团有限公司 | Shield receiving forward-shift construction method of boulder group open excavation and embedment mutation space |
| CN204570499U (en) * | 2015-03-13 | 2015-08-19 | 中铁二十四局集团有限公司 | A kind of large span vertical curve steel box-girder walking type pushing device |
| CN204703530U (en) * | 2015-05-06 | 2015-10-14 | 上海绿地建设(集团)有限公司 | For the thrustor of Construction of Steel Structure |
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| Publication number | Publication date |
|---|---|
| CN105484170B (en) | 2017-07-11 |
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