CN103850163A - Bridge type steel-plate road surface system and construction method thereof - Google Patents
Bridge type steel-plate road surface system and construction method thereof Download PDFInfo
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- CN103850163A CN103850163A CN201410049445.9A CN201410049445A CN103850163A CN 103850163 A CN103850163 A CN 103850163A CN 201410049445 A CN201410049445 A CN 201410049445A CN 103850163 A CN103850163 A CN 103850163A
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Abstract
The invention relates to a bridge type steel-plate road surface system and a construction method thereof. The system consists of a precast reinforced concrete strip-shaped foundation and a steel-plate road surface laid on the precast reinforced concrete strip-shaped foundation, wherein the cross section of the precast reinforced concrete strip-shaped foundation is inverted-T-shaped, reinforcing steel bars are arranged in the precast reinforced concrete strip-shaped foundation, at least two pre-buried screw tubes I for lifting are arranged at each of the left and right wings of the precast reinforced concrete strip-shaped foundation, and at least four pre-buried screw tubes II which are used for being connected with a lateral limiting plate and restricting the steel-plate road surface from laterally displacing are arranged at each of the two ends of the precast reinforced concrete strip-shaped foundation; the steel-plate road surface is formed through splicing steel-plate road surface units, and each steel-plate road surface unit consists of a road surface primary beam, a road surface secondary beam and a steel plate welded to the road surface primary beam and the road surface secondary beam. According to the bridge type steel-plate road surface system and the construction method thereof, the structural design is reasonable, construction is carried out by adopting precast structures, the quality is easy to guarantee, the structural strength is high, the transportation is facilitated, the construction is convenient and efficient, the permission of traffic is early, and the system can be reused, so that the bridge type steel-plate road surface system and the construction method thereof are particularly applicable to the paving of temporary roads of construction sites and the rush repair of damaged roads during earthquake emergency rescue.
Description
Technical field
The present invention relates to a kind of assembling type steel structure road surface and construction method thereof.
Background technology
Cast-in-site cement concrete pavement lay and reinstatement works in, due to ordinary Portland cement setting and harden slowly, the strength developing time is long, generally needs fencing lawn 14 days to concrete strength to reach the more than 80% of design strength, can open to traffic.If on the on-the-spot cast-in-situ concrete road surface that adopts of site construction, can delay the duration, particularly when repair after cast-in-situ concrete pavement damage more can be incured loss through delay the duration.As adopt steel slab bridge splicing road surface just can greatly shorten the pavement construction time, and for the road surface of damaging in using, its broken parts is changed, and can carried on construction work at night, do not affect construction speed.Lay general reinforced concrete pavement is all disposable, need to after use, be removed, thereby waste a large amount of manpower and materials, and produce a large amount of building wastes for temporary road, and environment is worked the mischief.If adopt lifting, the reusable bridge-type steel plate pavement system of convenient transportation, can further improve efficiency of construction, reduce costs protection of the environment.
Summary of the invention
The invention provides a kind of bridge-type steel plate pavement system and construction method thereof, solve existing road surfacing efficiency of construction low, be inconvenient to keep in repair, the technical problem of the not reproducible utilization of material after removing.
The technical solution adopted for the present invention to solve the technical problems is:
This bridge-type steel plate pavement system, is made up of prefabricated reinforced concrete strip foundation and the steel plate road surface that is laid on prefabricated reinforced concrete strip foundation top;
The cross section of described prefabricated reinforced concrete strip foundation is inverted T-shaped, inside is provided with reinforcing bar, on the left and right both wings of prefabricated reinforced concrete strip foundation, respectively have at least two pre-buried fiber tubes one for lifting, two ends respectively have at least four for connecting the pre-buried fiber tube two of lateral Displacement plate restriction steel plate road surface lateral displacement;
Described steel plate road surface is spliced mutually by unit, steel plate road surface, unit, steel plate road surface by road surface girder, road surface secondary beam and be welded on road surface girder and road surface secondary beam on steel plate form; Described road surface girder comprises two longitudinal edge girders, a longitudinally middle girder and four widthwise edge girders; Described road surface time distance between girders is connected between middle girder and longitudinal edge girder; On the secondary beam of described road surface, cover has suspension ring, and steel plate has rectangular opening at suspension ring extended position simultaneously; Perforate be welded with the steel bushing for be connected use with adjacent steel plate circuit face unit on the web of described longitudinal edge girder, adjacent steel plate circuit face unit transverse is by interconnecting drawing crab-bolt to pass steel bushing.
Between described prefabricated reinforced concrete strip foundation end face and steel plate road surface, be separated by by rubber pad; Between unit, steel plate road surface and adjacent steel plate circuit face unit, be separated by by rubber pad.
Described pre-buried fiber tube one and pre-buried fiber tube two form by internal thread sleeve pipe, rod iron and base plate, and internal thread sleeve pipe bottom is connected with rod iron, and rod iron bottom is welded and fixed with base plate.
The base plate of another pre-buried fiber tube two that described pre-buried fiber tube two is arranged side by side with it is structure as a whole.
The pre-buried fiber tube two at described prefabricated reinforced concrete strip foundation two ends is bolted and is connected with lateral Displacement plate, and lateral Displacement plate vertically arranges, and steel plate road surface unit inside is inserted in its upper end.
Described lateral Displacement plate is formed by connecting by base plate, riser and stiffener, and riser is vertically connected in the middle of base plate, and stiffener is connected between the riser left and right sides and base plate, is distributed with at least four screws corresponding with pre-buried fiber tube two positions on described base plate.
Described road surface girder and road surface secondary beam all adopt H shaped steel, and girder section height is higher than inferior beam section height.
Described longitudinal middle girder and time beam connecting node place, road surface, the web left and right sides of longitudinally middle girder is vertically connected with gusset plate, and gusset plate is bolted and is connected with the web of road surface secondary beam;
Described longitudinal edge girder and road surface time beam connecting node place, is vertically connected with gusset plate on the web of longitudinal edge girder, gusset plate is bolted and is connected with the web of road surface secondary beam;
Described longitudinal middle end of main beam and widthwise edge girder connected node place, the web both sides of longitudinally middle end of main beam are vertically connected with gusset plate, and gusset plate is fixedly connected with bolt by junction steel plate with the web of widthwise edge girder again;
Described longitudinal edge end of main beam and widthwise edge girder connected node place, be vertically connected with gusset plate on the web of longitudinal edge end of main beam, gusset plate is fixedly connected with bolt by junction steel plate with the web of widthwise edge girder again.
On the steel plate of unit, described steel plate road surface, be coated with epoxide terrace paint, on road surface girder and road surface secondary beam, be coated with rustproof paint.
The construction method of this bridge-type steel plate pavement system, construction sequence is as follows:
Beneficial effect of the present invention is as follows:
System main body of the present invention is prefabricated reinforced concrete strip foundation and steel plate road surface.Prefabricated reinforced concrete strip foundation and steel plate road surface separate by rubber pad.Prefabricated reinforced concrete strip foundation inside arranges reinforcing bar.Prefabricated reinforced concrete strip foundation upper surface is equipped with 4 pre-buried fiber tubes one, so as with lifting.Prefabricated reinforced concrete strip foundation end is also provided with 4 pre-buried fiber tubes two, can connect lateral Displacement plate, to limit the lateral displacement on steel plate road surface.Pre-buried fiber tube top is a sleeve pipe with screw thread, and bottom is a rod iron, and Socket welding is connected on rod iron.In order to strengthen the anchoring strength of pre-buried fiber tube and structure, rod iron bottom is welded with steel plate.When lifting, screwed suspension ring are screwed into sleeve pipe, after having lifted again by suspension ring removal.
When unit, steel plate road surface processing and fabricating on girder web plate boring, welding node plate, utilize high-strength bolt that girder is connected with secondary beam.Road surface girder comprises longitudinal edge girder, longitudinally middle girder and widthwise edge girder.Between girder, adopt welding node plate, and the mode being connected with high-strength bolt with junction plate.Steel plate and primary-secondary beam utilization are uninterruptedly welded into entirety.The stabilized structure of unit, steel plate road surface, connects reliably, is convenient to installation and removal.
Upper lift ring, in the time of processing and fabricating, is overlapped in bridge-type steel plate road surface on secondary beam, opens rectangular opening simultaneously on steel plate.Suspension ring adopt reinforcing bar to bend and form, and when just slab bridge lifting, suspension ring are hooked, and when steel slab bridge uses, suspension ring fall automatically, do not affect pavement usage.
For bridge-type steel plate road slab interblock is laterally connected reliably, perforate on the longitudinal end of main beam web of steel slab bridge, weldable steel sleeve, penetrates drawing crab-bolt to connect.
Bridge-type steel plate pavement system of the present invention, compared with traditional road pavement and method for maintaining, has structural strength high, is convenient to transport, reusable, and the advantage such as construct efficient, is in particular in the following aspects:
1, convenient transportation.The volume on each block plate road surface is little, and is standardized structural element.
2, Fast Installation, easy construction.On prefabricated strip foundation and steel plate road surface, be equipped with lifting hole(eyelet), convenient lifting.After hoisted in position, penetrate drawing crab-bolt and fixed connecting plate, can use.
3, the required plant equipment of constructing is few, and material usage is economized, and can reuse, and greatly reduces construction costs and other expenditure.Because prefabricated reinforced concrete strip foundation and steel plate road surface are prefabricated in the factory and process, at the construction field (site) only need be by grading, steel slab bridge pavement system is laid in lifting.For temporary road, be finished rear recyclable, in order to next time use, further save material usage.
4, pavement construction is few to ambient influnence.Traditional pavement construction needs more construction machinery, produces larger noise when construction machinery operation.Meanwhile, in traditional pavement engineering construction, waste material of buildings is more, comprises water conservancy, timber, packaging material, discarded mould etc.These refuses are buried under the ground, and can cause the pollution to underground water.The present invention is prefabricated at workshop, and refuse is less and can focus on, and job site environment is not almost affected.
5, spread i.e. use, open to traffic early.Once laying construction is complete, just open to traffic immediately after removal suspension ring.Even can be open to traffic on construction limit, limit, be conducive to conveniently marching into the arena of construction machinery and Construction traffic, accelerating construction progress.The time that is open to traffic after construction of cement concrete road surface is greater than 16 days, and the time that is open to traffic after asphalt concrete pavement construction is greater than 3 days, and bridge-type steel plate pavement system of the present invention can spread i.e. use, and even Bian Pu limit is used.
6, dismounting freely.Bridge-type steel plate pavement system is reusable, can lay in advance, is transported to when needed on-the-spot laying.Built-in fitting is housed in structure, installs, removal suspension ring are very convenient, structure hoisting fashionable dress upper lift ring is Liftable.
7, applied widely.Bridge-type steel plate pavement system is applicable to have the various roadbeds of certain bearing capacity, is mainly used in quick laying construction transport channel, ensures the current smoothly of construction vehicle.The present invention can not only be used in the laying of construction with interim matter transportation road, can also be used for rushing to repair the road being damaged in earthquake.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the plan view of prefabricated reinforced concrete strip foundation.
Fig. 3 is the structural representation of 1-1 section in Fig. 2.
Fig. 4 is the structural representation of 2-2 section in Fig. 2.
Fig. 5 is the structural representation of pre-buried fiber tube one.
Fig. 6 is the structural representation of pre-buried fiber tube two.
Fig. 7 is the structural representation of lateral Displacement plate.
Fig. 8 is the structural representation of 5-5 section in Fig. 7.
Fig. 9 is the structural representation of unit, steel plate road surface.
Figure 10 is the structural representation of longitudinally middle girder and road surface time beam connecting node.
Figure 11 is the structural representation of 4-4 section in Figure 10.
Figure 12 is the structural representation of longitudinal edge girder and road surface time beam connecting node.
Figure 13 is the structural representation of 5-5 section in Figure 12.
Figure 14 is the structural representation of longitudinally middle end of main beam and widthwise edge girder connected node.
Figure 15 is the structural representation of 6-6 section in Figure 14.
Figure 16 is the structural representation of longitudinal edge end of main beam and widthwise edge girder connected node.
Figure 17 is the structural representation of 7-7 section in Figure 16.
Figure 18 is the suspension ring distribution map on unit, steel plate road surface.
Figure 19 is the lateral view of unit, steel plate road surface.
Figure 20 is the structural representation of suspension ring.
Figure 21 is the structural representation of steel bushing.
Figure 22 is the structural representation to drawing crab-bolt.
Reference numeral: unit, 1-steel plate road surface; 2-prefabricated reinforced concrete strip foundation; 3-longitudinal edge girder; The longitudinally middle girder of 4-; 5-widthwise edge girder; 6-road surface secondary beam; The pre-buried fiber tube one of 7-, 7.1-internal thread sleeve pipe, 7.2-rod iron, 7.3-base plate; The pre-buried fiber tube two of 8-, 8.1-internal thread sleeve pipe, 8.2-rod iron, 8.3-base plate; 9-reinforcing bar; 10-lateral Displacement plate, 10.1-base plate, 10.2-riser, 10.3-stiffener, 10.4-screw; 11-rubber pad; 12-steel plate; The longitudinally middle girder of 13-and road surface time beam connecting node; 14-longitudinal edge girder and road surface time beam connecting node; The longitudinally middle end of main beam of 15-and widthwise edge girder connected node; 16-longitudinal edge end of main beam and widthwise edge girder connected node; 17-suspension ring; 18-is to drawing crab-bolt; 19-steel bushing; 20-gusset plate; 21-junction steel plate.
Detailed description of the invention
Embodiment is shown in Figure 1, and this bridge-type steel plate pavement system is made up of prefabricated reinforced concrete strip foundation 2 and the steel plate road surface that is laid on prefabricated reinforced concrete strip foundation top.Between described prefabricated reinforced concrete strip foundation 2 end faces and steel plate road surface, be separated by by rubber pad 11.Between unit, steel plate road surface 1 and adjacent steel plate circuit face unit, be separated by by rubber pad 11.
Shown in Fig. 2～4, the cross section of described prefabricated reinforced concrete strip foundation 2 is inverted T-shaped, inside is provided with reinforcing bar 9, on the left and right both wings of prefabricated reinforced concrete strip foundation 2, respectively have two pre-buried fiber tubes 1 for lifting, respectively there are four pre-buried fiber tubes 28 that limit the lateral displacement of steel plate road surface for connecting lateral Displacement plate 10 at two ends.
Shown in Fig. 9～22, described steel plate road surface is spliced mutually by unit, steel plate road surface 1, unit, steel plate road surface by road surface girder, road surface secondary beam and be welded on road surface girder and road surface secondary beam on steel plate 12 form; Described road surface girder comprises girder 4 and four widthwise edge girders 5 in the middle of two longitudinal edge girders 3, one are longitudinally; Secondary beam 6 intervals, described road surface are connected between middle girder 4 and longitudinal edge girder 3; On described road surface secondary beam 6, cover has suspension ring 17, and steel plate 12 has rectangular opening at suspension ring extended position simultaneously; Perforate be welded with the steel bushing 19 for be connected use with adjacent steel plate circuit face unit 1 on the web of described longitudinal edge girder 3, adjacent steel plate circuit face unit 1 is laterally by drawing crab-bolt 18 to interconnect through steel bushing 19.
Described road surface girder and road surface secondary beam 6 all adopt H shaped steel, and girder is higher than secondary beam.On the steel plate 12 of unit, described steel plate road surface 1, be coated with epoxide terrace paint, on road surface girder and road surface secondary beam, be coated with rustproof paint.
Shown in Figure 5, described pre-buried fiber tube 1 and pre-buried fiber tube 28 form by internal thread sleeve pipe, rod iron and base plate, and internal thread sleeve pipe bottom is connected with rod iron, and rod iron bottom is welded and fixed with base plate.
Shown in Figure 6, the base plate of another pre-buried fiber tube 28 that described pre-buried fiber tube 28 is arranged side by side with it is structure as a whole.
Shown in Fig. 7, Fig. 8, the pre-buried fiber tube 28 at described prefabricated reinforced concrete strip foundation 2 two ends is bolted and is connected with lateral Displacement plate 10, and lateral Displacement plate vertically arranges, and 1 inner side, unit, steel plate road surface is inserted in its upper end.Lateral Displacement plate 10 is formed by connecting by base plate 10.1, riser 10.2 and stiffener 10.3, riser 10.2 is vertically connected in the middle of base plate 10.1, stiffener 10.3 is connected between riser 10.2 left and right sides and base plate 10.1, is distributed with four screws 10.4 corresponding with pre-buried fiber tube 28 positions on described base plate 10.1.
Shown in Figure 10, Figure 11, described longitudinal middle girder and time beam connecting node 13 places, road surface, the web left and right sides of longitudinally middle girder 4 is vertically connected with gusset plate 20, and gusset plate 20 is bolted and is connected with the web of road surface secondary beam 6;
Shown in Figure 12, Figure 13, described longitudinal edge girder and road surface time beam connecting node 14 places, are vertically connected with gusset plate 20 on the web of longitudinal edge girder 3, and gusset plate 20 is bolted and is connected with the web of road surface secondary beam 6;
Shown in Figure 14, Figure 15, described longitudinal middle end of main beam and widthwise edge girder connected node 15 places, longitudinally, the web both sides of girder 4 ends are vertically connected with gusset plate 20, and gusset plate 20 is fixedly connected with bolt by junction steel plate 21 with the web of widthwise edge girder 5 again;
Shown in Figure 16, Figure 17, described longitudinal edge end of main beam and widthwise edge girder connected node 16 places, on the web of longitudinal edge girder 3 ends, be vertically connected with gusset plate 20, gusset plate 20 is fixedly connected with bolt by junction steel plate 21 with the web of widthwise edge girder 5 again.
The construction method of this bridge-type steel plate pavement system, construction sequence is as follows:
Claims (10)
1. a bridge-type steel plate pavement system, is characterized in that: by prefabricated reinforced concrete strip foundation (2) be laid on steel plate road surface in prefabricated reinforced concrete strip foundation and form;
The cross section of described prefabricated reinforced concrete strip foundation (2) is inverted T-shaped, inside is provided with reinforcing bar (9), on the left and right both wings of prefabricated reinforced concrete strip foundation (2), respectively have at least two pre-buried fiber tubes one (7) for lifting, two ends respectively have at least four for connecting the pre-buried fiber tube two (8) of lateral Displacement plate (10) restriction steel plate road surface lateral displacement;
Described steel plate road surface is spliced mutually by unit, steel plate road surface (1), unit, steel plate road surface by road surface girder, road surface secondary beam and be welded on road surface girder and road surface secondary beam on steel plate (12) form; Described road surface girder comprises two longitudinal edge girders (3), longitudinally middle girder (4) and four widthwise edge girders (5); Described road surface secondary beam (6) interval is connected between middle girder (4) and longitudinal edge girder (3); The upper cover of described road surface secondary beam (6) has suspension ring (17), and steel plate (12) has rectangular opening at suspension ring extended position simultaneously; Perforate be welded with the steel bushing (19) for be connected use with adjacent steel plate circuit face unit (1) on the web of described longitudinal edge girder (3), adjacent steel plate circuit face unit (1) is laterally by drawing crab-bolt (18) to interconnect through steel bushing (19).
2. bridge-type steel plate pavement system according to claim 1, is characterized in that: between described prefabricated reinforced concrete strip foundation (2) end face and steel plate road surface, be separated by by rubber pad (11); Between unit, steel plate road surface (1) and adjacent steel plate circuit face unit, be separated by by rubber pad (11).
3. bridge-type steel plate pavement system according to claim 1, it is characterized in that: described pre-buried fiber tube one (7) and pre-buried fiber tube two (8) form by internal thread sleeve pipe, rod iron and base plate, internal thread sleeve pipe bottom is connected with rod iron, and rod iron bottom is welded and fixed with base plate.
4. bridge-type steel plate pavement system according to claim 3, is characterized in that: the base plate of another pre-buried fiber tube two (8) that described pre-buried fiber tube two (8) is arranged side by side with it is structure as a whole.
5. bridge-type steel plate pavement system according to claim 1, it is characterized in that: the pre-buried fiber tube two (8) at described prefabricated reinforced concrete strip foundation (2) two ends is bolted and is connected with lateral Displacement plate (10), lateral Displacement plate vertically arranges, and inner side, unit, steel plate road surface (1) is inserted in its upper end.
6. bridge-type steel plate pavement system according to claim 5, it is characterized in that: described lateral Displacement plate (10) is formed by connecting by base plate (10.1), riser (10.2) and stiffener (10.3), riser (10.2) is vertically connected in the middle of base plate (10.1), stiffener (10.3) is connected between riser (10.2) left and right sides and base plate (10.1), is distributed with at least four screws (10.4) corresponding with pre-buried fiber tube two (8) positions on described base plate (10.1).
7. bridge-type steel plate pavement system according to claim 1, is characterized in that: described road surface girder and road surface secondary beam (6) all adopt H shaped steel, and girder section height is higher than inferior beam section height.
8. bridge-type steel plate pavement system according to claim 7, is characterized in that:
Described longitudinal middle girder and road surface time beam connecting node (13) are located, and the web left and right sides of longitudinally middle girder (4) is vertically connected with gusset plate (20), and gusset plate (20) is bolted and is connected with the web of road surface secondary beam (6);
Described longitudinal edge girder and road surface time beam connecting node (14) is located, and is vertically connected with gusset plate (20) on the web of longitudinal edge girder (3), and gusset plate (20) is bolted and is connected with the web of road surface secondary beam (6);
Described longitudinal middle end of main beam and widthwise edge girder connected node (15) are located, longitudinally, the web both sides of girder (4) end are vertically connected with gusset plate (20), and gusset plate (20) is fixedly connected with bolt by junction steel plate (21) with the web of widthwise edge girder (5) again;
Described longitudinal edge end of main beam and widthwise edge girder connected node (16) are located, on the web of longitudinal edge girder (3) end, be vertically connected with gusset plate (20), gusset plate (20) is fixedly connected with bolt by junction steel plate (21) with the web of widthwise edge girder (5) again.
9. bridge-type steel plate pavement system according to claim 1, is characterized in that: on the steel plate (12) of unit, described steel plate road surface (1), be coated with epoxide terrace paint, on road surface girder and road surface secondary beam, be coated with rustproof paint.
10. a construction method for bridge-type steel plate pavement system as described in claim 1～9 any one, is characterized in that construction sequence is as follows:
Step 1, make prefabricated reinforced concrete strip foundation (2), assembling reinforcement (9), fixing pre-buried fiber tube one (7) and pre-buried fiber tube two (8), after concreting moulding, screwed suspension ring are screwed into pre-buried fiber tube one (7), sling, obtain prefabricated reinforced concrete strip foundation after the demoulding;
Step 2, make unit, steel plate road surface (1), connect each road surface girder and road surface secondary beam (6), suspension ring (17) are enclosed within on the secondary beam of road surface, again steel plate (12) and road surface girder and road surface secondary beam are connected into entirety, steel plate (12) is opened rectangular opening at suspension ring extended position, finally perforate weldable steel sleeve (19) on the web of longitudinal edge girder (3) simultaneously;
Step 3, removes road surface, and road surface is carried out to compacting;
Step 4, the prefabricated reinforced concrete strip foundation (2) processing and unit, steel plate road surface (1) are transported to job site, on the pre-buried fiber tube one (7) of prefabricated reinforced concrete strip foundation (2), be screwed into suspension ring, by extremely processed good road surface of prefabricated reinforced concrete strip foundation (2) lifting, removal suspension ring, then unit, steel plate road surface (1) is lifted into prefabricated reinforced concrete strip foundation (2) upper, adjacent steel plate circuit face unit (1) is laterally by interconnecting drawing crab-bolt (18) to pass steel bushing (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410049445.9A CN103850163B (en) | 2014-02-13 | 2014-02-13 | Bridge-type steel plate pavement system and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410049445.9A CN103850163B (en) | 2014-02-13 | 2014-02-13 | Bridge-type steel plate pavement system and construction method thereof |
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| CN103850163A true CN103850163A (en) | 2014-06-11 |
| CN103850163B CN103850163B (en) | 2015-12-02 |
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| CN201410049445.9A Expired - Fee Related CN103850163B (en) | 2014-02-13 | 2014-02-13 | Bridge-type steel plate pavement system and construction method thereof |
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| CN108342937A (en) * | 2018-03-14 | 2018-07-31 | 安徽省交通控股集团有限公司 | A kind of prefabricated pier, the floated tubular Crossing brace connection structure of plate |
| CN108729318A (en) * | 2018-05-22 | 2018-11-02 | 四川城凯特建设工程有限公司 | A kind of construction method padding road on mud-rock flow soft base upper berth |
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| CN108729318B (en) * | 2018-05-22 | 2020-05-22 | 四川城凯特建设工程有限公司 | Construction method for paving road on debris flow soft foundation |
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|---|---|
| CN103850163B (en) | 2015-12-02 |
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