CN105735076A - Pillow beam type precast concrete structure layer and assembling method thereof - Google Patents
Pillow beam type precast concrete structure layer and assembling method thereof Download PDFInfo
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- CN105735076A CN105735076A CN201610229935.6A CN201610229935A CN105735076A CN 105735076 A CN105735076 A CN 105735076A CN 201610229935 A CN201610229935 A CN 201610229935A CN 105735076 A CN105735076 A CN 105735076A
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- prefabrication
- precast slab
- precast
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- precast concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
Abstract
The invention provides a pillow beam type precast concrete structure layer and an assembling method thereof.The pillow beam type precast concrete structure layer comprises a plurality of precast concrete planks and a plurality of precast concrete beams; the bottoms of the precast concrete planks are provided with mounting grooves matched with the precast concrete beams in shape, and the precast concrete beams fixedly connect two or more concrete planks which are continuously laid through the mounting grooves, so that an integrated structural layer for bearing the load is formed.According to the pillow beam type precast concrete structure layer and the assembling method thereof, the precast concrete beams are arranged below the precast concrete planks, and in the assembling process, the precast concrete planks can be leveled through the precast concrete beams, so that it is guaranteed that the assembled structure layer has good flatness.
Description
Technical field
The present invention relates to highway engineering technology and airport pavement engineering technology, particularly relate to a kind of sleeper beam formula prefabrication and assembly construction concrete and assembly method thereof.
Background technology
If current domestic water cement concrete road base is based on cast in situs, site operation can produce substantial amounts of waste water,waste gas and industrial residue, and the construction operation time is long, and construction machinery volume of traffic is big, personnel specialty degree is low, needs the unfavorable factors such as long maintenance after cast in situs.Due to economic fast development, it is necessary to expressway construction faster, firmer, more environmental protection.
In recent years, prefabricated construction is widely used in building industry, makes the construction environmental protection more of building trade, and construction quality gets better protection, and substantially reduces the construction period.In transportation industry, prefabricated assembled road surface is at precasting yard concentration pre-casting concrete flag, and the concrete prefabricated board that then intensity reach designing requirement transports job site, the cement concrete pavement that assembling is formed.
But, common prefabricated assembled road surface, there is surface evenness difference, road deck function of surface hole is more, affect the defects such as road surface globality.
Summary of the invention
The technical problem to be solved is to provide a kind of sleeper beam formula prefabrication and assembly construction concrete being prone to ensure structure flatness.
A kind of sleeper beam formula prefabrication and assembly construction concrete provided by the invention, including: polylith precast slab and a plurality of precast concrete beam；
The bottom of described precast slab is provided with the mounting groove of the form fit with described precast concrete beam, and described precast concrete beam is connected fixing at least two concrete slab of continuous laying by described mounting groove, to form the overall structure layer of bearing load.
For above-mentioned sleeper beam formula prefabrication and assembly construction concrete, in a kind of possible implementation, the degree of depth of described mounting groove is less than or equal to the height of described precast concrete beam.
For above-mentioned sleeper beam formula prefabrication and assembly construction concrete, in a kind of possible implementation, being embedded with at least two fixing bars in described precast concrete beam, the height that described fixing bar exposes from the upper surface of described precast concrete beam is less than or equal to the height from the end face of described mounting groove to the upper surface of described precast slab.
For above-mentioned sleeper beam formula prefabrication and assembly construction concrete, in a kind of possible implementation, upper surface from the end face of described mounting groove to described precast slab is provided with the through hole corresponding with described fixing bar position, and described precast slab and described precast concrete beam are fixed by described fixing bar through corresponding through hole.
For above-mentioned sleeper beam formula prefabrication and assembly construction concrete, in a kind of possible implementation, the top being positioned at described through hole in described precast slab has fixing groove, pad is installed in described fixing groove, and by nut and described pad, described precast slab and described precast concrete beam is fixed.
For above-mentioned sleeper beam formula prefabrication and assembly construction concrete, in a kind of possible implementation, upper surface from the end face of described mounting groove to described precast slab is provided with the blind hole corresponding with described fixing bar position, and described fixing bar inserts corresponding blind hole and described precast slab and described precast concrete beam fixed.
For above-mentioned sleeper beam formula prefabrication and assembly construction concrete, in a kind of possible implementation, the installing hole corresponding with described fixing bar position it is provided with in the side of described precast slab, it is inserted with steady pin in described installing hole, one end of described steady pin is inserted in described fixing bar, described precast slab and described precast concrete beam to be fixed.
For above-mentioned sleeper beam formula prefabrication and assembly construction concrete, in a kind of possible implementation, described precast slab is provided with the built-in fitting for lifting and be in the milk.
The present invention also provides for the assembly method of a kind of sleeper beam formula prefabrication and assembly construction concrete, and described sleeper beam formula prefabrication and assembly construction concrete is the sleeper beam formula prefabrication and assembly construction concrete of any one structure in the embodiment of the present invention, and described method includes:
A plurality of precast concrete beam is lifted into the appointment position in construction area；
For each piece of described precast slab, the top of the described a plurality of precast concrete beam described precast slab being lifted in construction area, when the mounting groove bottom described precast slab being directed at the position of each described a plurality of precast concrete beam, described precast slab is placed in described construction area；
By described precast slab and described precast concrete beam leveling and fixing after, dismantle the suspender in described precast slab, and be in the milk by suspender installation duct.
The present invention by arranging precast concrete beam under precast slab, when assembling, it is possible to utilize precast concrete beam that precast slab is carried out leveling, thus ensureing that the structure sheaf after assembling has good flatness.
The structure sheaf adopting the present invention lays road surface or airfield pavement, is conducive to the adjustment relying on precast beam with basic unit, then makes road surface or face, road smooth again through the bolt on precast beam with the screw fine setting on precoated plate.
Additionally, the precast slab adopting the sleeper beam formula prefabricated assembly structural layer of present invention laying is to support by precast beam, there is certain space between precoated plate and basic unit, then pass through grout hole and grouting material is poured under precoated plate.Space have the flowing being beneficial to grouting material between precoated plate and basic unit, be filled under precoated plate ensureing that grouting material is uniformly full.The brace foundation making sleeper beam formula prefabricated assembly structural layer is more closely knit, thus ensure that the bearing capacity of structure sheaf.
Accompanying drawing explanation
The accompanying drawing of the part comprising in the description and constituting description together illustrates the exemplary embodiment of the present invention, feature and aspect with description, and is used for explaining principles of the invention.
Fig. 1 is the installment state schematic diagram of the sleeper beam formula prefabrication and assembly construction concrete of the embodiment of the present invention one；
Fig. 2 a be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the axonometric chart of a kind of exemplary construction of precast slab；
Fig. 2 b be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the side view of a kind of exemplary construction of precast slab；
Fig. 3 be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the upward view of a kind of exemplary construction of precast slab；
Fig. 4 a be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the axonometric chart of a kind of exemplary construction of precast concrete beam；
Fig. 4 b be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the side view of a kind of exemplary construction of precast concrete beam；
Fig. 5 be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the top view of a kind of exemplary construction of precast concrete beam；
The top view of hoisting structure in Fig. 6 a and sleeper beam formula prefabrication and assembly construction concrete that Fig. 6 b is the embodiment of the present invention one；
Fig. 7 is the schematic diagram of the fixed form of the sleeper beam formula prefabrication and assembly construction concrete of the embodiment of the present invention two；
Fig. 8 is the schematic diagram of the fixed form of the sleeper beam formula prefabrication and assembly construction concrete of the embodiment of the present invention three；
Fig. 9 is the flow chart of the assembly method of the sleeper beam formula prefabrication and assembly construction concrete of the embodiment of the present invention four.
Detailed description of the invention
The various exemplary embodiments of the present invention, feature and aspect is described in detail below with reference to accompanying drawing.Accompanying drawing labelling identical in accompanying drawing represents the same or analogous assembly of function.Although the various aspects of embodiment shown in the drawings, but unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.It addition, in order to better illustrate the present invention, detailed description of the invention below gives numerous details.It will be appreciated by those skilled in the art that there is no some detail, the equally possible enforcement of the present invention.In some instances, method, the means known for those skilled in the art are not described in detail, in order to highlight the purport of the present invention.
Embodiment one
Fig. 1 is the installment state schematic diagram of the sleeper beam formula prefabrication and assembly construction concrete of the embodiment of the present invention one, Fig. 2 a be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the axonometric chart of a kind of exemplary construction of precast slab, Fig. 2 b be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the side view of a kind of exemplary construction of precast slab, Fig. 3 be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the upward view of a kind of exemplary construction of precast slab.Fig. 4 a be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the axonometric chart of a kind of exemplary construction of precast concrete beam.Fig. 4 b be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the side view of a kind of exemplary construction of precast concrete beam, Fig. 5 be the embodiment of the present invention one sleeper beam formula prefabrication and assembly construction concrete in the top view of a kind of exemplary construction of precast concrete beam.
As it is shown in figure 1, this sleeper beam formula prefabrication and assembly construction concrete mainly may include that polylith precast slab 11 (can be called for short precoated plate) and a plurality of precast concrete beam 12 (can be called for short precast beam).Wherein, as shown in Fig. 2 a, Fig. 2 b, Fig. 3, Fig. 4 a and Fig. 4 b, the bottom of precast slab 11 is provided with the mounting groove 111 of the form fit with described precast concrete beam 12, described precast concrete beam 12 is connected fixing at least two pieces of precast slabs 11 of continuous laying by described mounting groove 111, to form the overall structure layer of bearing load.
It should be noted that, although Fig. 1, Fig. 2 a, Fig. 2 b and Fig. 3 illustrate only precoated plate be provided with two mounting grooves 111, it will be appreciated by a person skilled in the art that the number of the mounting groove 111 of precoated plate can also be more than two, specifically can arrange flexibly according to the different of the width of precoated plate.Accordingly, it is possible to the precast beam mated with mounting groove 111 number is set.And, although Fig. 1, Fig. 2 a, Fig. 2 b and Fig. 3 illustrate only the two pieces of precoated plates of length direction continuous laying at a precast beam, but it will be appreciated by those skilled in the art that, length according to precast beam and the difference of the length of precoated plate, on the length direction of each precast beam can the number of preformed sheets of continuous laying can also more than two.In addition, if construction area is longer road surface, airfield runway etc., along construction area length can continuous laying many groups precast beam and prefabricated section, in the position of every two precast beams linking, bridge preferably by one block of prefabricated section, to ensure the smooth of the road surface after assembling or airfield pavement.
As shown in Fig. 4 a, Fig. 4 b and Fig. 5, in a kind of possible implementation, precast concrete beam 12 is embedded with at least two fixing bars 121.Wherein, the quantity of pre-buried in precast beam fixing bar 121 can be arranged according to the length of precoated plate, it is preferred at interval of being provided with at least two fixing bars 121 in the scope of one piece of precoated plate length in precast beam.And the fixing bar 121 in precast beam mates with position and the size in the hole 112 in precoated plate, fixes precast beam and precoated plate thereby through fixing bar 121 and hole 112.The fixed form of precoated plate and precast beam has multiple, introduces two kinds of fixed forms respectively through following embodiment two and embodiment three in the present invention.Fixing bar 121 is preferably but is not limited to screw rod or the bolt etc. that are embedded in precast beam.
Preferably, as shown in Fig. 2 b and Fig. 4 b, the degree of depth D1 of mounting groove 111 less than or equal to the height D2 of described precast concrete beam 12, is so conducive to adjusting the discrepancy in elevation between precast slab, and the flowing of grouting material and filling when being conducive to follow-up grouting construction.
As shown in Fig. 2 b and Fig. 4 b, the height H1 that described fixing bar 121 exposes from the upper surface of described precast concrete beam 12 is less than or equal to the height H2 from the end face of described mounting groove 111 to the upper surface of described precast slab 11, it thus is avoided that precast slab surface exists relatively Multifunctional perforated, advantageously ensures that the globality on precast slab 11 surface.
The top view of hoisting structure in Fig. 6 a and sleeper beam formula prefabrication and assembly construction concrete that Fig. 6 b is the embodiment of the present invention one.As shown in figures 6 a and 6b, in a kind of possible implementation, the precast slab 11 of sleeper beam formula prefabrication and assembly construction concrete is provided with the built-in fitting 113 for lifting and be in the milk.On built-in fitting 113 can mounting hanger, lifting appliance can pass through suspender and be sling by precast slab 11 and install.Additionally, suspender is taken out from built-in fitting, it is possible to carry out the operations such as follow-up grouting.The process of concrete lifting may refer to the associated description of following embodiment of the method.
Embodiment two
Fig. 7 is the schematic diagram of the fixed form of the sleeper beam formula prefabrication and assembly construction concrete of the embodiment of the present invention two.On the basis of embodiment one, as shown in Fig. 7 and Fig. 1, the sleeper beam formula prefabrication and assembly construction concrete of the present embodiment, being provided with the through hole 122 corresponding with described fixing bar 121 position from the end face of the mounting groove 111 of precast slab 11 to the upper surface of precast slab 11, described precast slab 11 is fixed with described precast concrete beam 12 by described fixing bar 121 through corresponding through hole 122.
Preferably, as shown in Figure 7, the top being positioned at described through hole 122 in described precast slab 11 has fixing groove 123, is provided with pad 124, and is fixed with described precast concrete beam 12 by described precast slab 11 by nut 31 and described pad 124 in described fixing groove 123.The advantage of this fixed form is the plate avoiding prefabricated deviation to cause and beam cannot be installed situation and be conveniently adjusted between contiguous prefabricated plate the discrepancy in elevation to ensure the flatness of structure sheaf.
Embodiment three
Fig. 8 is the schematic diagram of the fixed form of the sleeper beam formula prefabrication and assembly construction concrete of the embodiment of the present invention three.On the basis of embodiment one, as shown in Fig. 8 and Fig. 1, the sleeper beam formula prefabrication and assembly construction concrete of the present embodiment, upper surface from the end face of described mounting groove 111 to described precast slab 11 is provided with the blind hole 125 corresponding with described fixing bar 121 position, and described fixing bar 121 inserts the blind hole 125 of correspondence and fixed with described precast concrete beam 12 by described precast slab 11.
Preferably, as shown in Figure 8, the installing hole 126 corresponding with described fixing bar 121 position it is provided with in the side of described precast slab 11, it is inserted with steady pin 33 in described installing hole 126, one end of described steady pin 33 is inserted in described fixing bar 121, to be fixed with described precast concrete beam 12 by described precast slab 11.In the fixed form shown in Fig. 8, the top of fixing bar 121 is provided with jack 35, and the size of this jack 35 and the size of steady pin 33 adapt, so that one end of steady pin 33 is inserted in fixing bar 121.The advantage of this fixed form is to avoid precast slab surface to there is relatively Multifunctional perforated, it is ensured that the globality on precast slab 11 surface.
Precoated plate in the embodiment of the present invention and precast beam, typically refer to concentration pre-casting health preserving outside construction area and, to the Ban Heliang of age, mix, including laying reinforcing bar, concrete to add additive, concrete add in admixture, concrete in precoated plate and precast beam, situations such as joining regeneration aggregate.
Embodiment four
Fig. 9 is the flow chart of the assembly method of the sleeper beam formula prefabrication and assembly construction concrete of the embodiment of the present invention four.As it is shown in figure 9, for the sleeper beam formula prefabrication and assembly construction concrete of any one structure in above-described embodiment, its assembly method may include that
Step 901, the appointment position a plurality of precast concrete beam being lifted in construction area；
Step 902, for each piece of described precast slab, the top of the described a plurality of precast concrete beam described precast slab being lifted in construction area, when the mounting groove bottom described precast slab being directed at the position of each described a plurality of precast concrete beam, described precast slab is placed in described construction area；
Step 903, after described precast slab and described precast concrete beam leveling fixing, the suspender in the built-in fitting of described precast slab will be dismantled；
Step 904, by suspender install duct be in the milk.
Specifically, first at the outer concentration pre-casting concrete slab of construction area and beams of concrete.Reach after design strength through health preserving, by precoated plate and transporting precast beams to job site, referring to Fig. 6 a and Fig. 6 b, by corresponding lifting appliance, precast beam is lain against in the basic unit of leveling, precoated plate is placed on precast beam, screw on precoated plate corresponding to the screw rod on pre-Ying Liang, to be then passed through the installation accuracy of the screw rod on precast beam and the screw fine setting precoated plate on plate, with ensures assemble after the flatness of structure sheaf.Finally by reserved grout hole, grouting material poured into the space between sleeper beam formula prefabrication and assembly construction concrete and basic unit.The time of open to traffic can be determined according to the requirement of strength of grouting material.
The contrast on the present invention and common prefabrication and assembly construction road surface has the advantage that
The linking of common prefabricated assembly structural layer is to lean on the dowel steel of seam crossing or ribbet to be attached, and the difficulty of construction of its structure sheaf is big, globality is poor, it is impossible to well solve surface evenness problem.Adopt the sleeper beam formula prefabricated construction layer that the present invention lays for this defect of common prefabricated construction layer, rely on the adjustment of precast beam and basic unit, then make structure sheaf smooth again through the bolt on precast beam with the screw fine setting on precoated plate.Finally pour into grouting material and fill the space between sleeper beam formula prefabrication and assembly construction concrete and basic unit, to ensure globality and the bearing capacity of structure.
Common prefabricated assembly structural layer is when grouting construction, and grouting pressure during to the fluidity of grouting material and construction has certain requirement, makes difficulty of construction increase.The precast slab adopting the sleeper beam formula prefabricated assembly structural layer of present invention laying is to support by precast beam, there is certain space, then pass through grout hole and poured under precoated plate by grouting material between precoated plate and basic unit.Space have the flowing being beneficial to grouting material between precoated plate and basic unit, be filled under precoated plate ensureing that grouting material is uniformly full.The brace foundation making sleeper beam formula prefabricated assembly structural layer is more closely knit, thus ensure that the bearing capacity of structure sheaf.
Additionally, the precast slab adopting the sleeper beam formula prefabrication and assembly construction concrete of present invention laying is to support by precast beam, there is certain space between plate and basic unit, then pass through grout hole and grouting material is poured under precoated plate.Space have the flowing being beneficial to grouting material between precoated plate and basic unit, be filled under precoated plate ensureing that grouting material is uniformly full.The brace foundation making sleeper beam formula prefabricated assembly structural layer is more closely knit, thus ensure that the bearing capacity of structure sheaf.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (9)
1. a sleeper beam formula prefabrication and assembly construction concrete, it is characterised in that including: polylith precast slab and a plurality of precast concrete beam；
The bottom of described precast slab is provided with the mounting groove of the form fit with described precast concrete beam, described precast concrete beam is connected fixing at least two pieces of precast slabs of continuous laying by described mounting groove, to form the overall structure layer of bearing load.
2. sleeper beam formula prefabrication and assembly construction concrete according to claim 1, it is characterised in that the degree of depth of described mounting groove is less than or equal to the height of described precast concrete beam.
3. sleeper beam formula prefabrication and assembly construction concrete according to claim 2, it is characterized in that, being embedded with at least two fixing bars in described precast concrete beam, the height that described fixing bar exposes from the upper surface of described precast concrete beam is less than or equal to the height from the end face of described mounting groove to the upper surface of described precast slab.
4. sleeper beam formula prefabrication and assembly construction concrete according to claim 3, it is characterized in that, upper surface from the end face of described mounting groove to described precast slab is provided with the through hole corresponding with described fixing bar position, and described precast slab and described precast concrete beam are fixed by described fixing bar through corresponding through hole.
5. sleeper beam formula prefabrication and assembly construction concrete according to claim 4, it is characterized in that, the top being positioned at described through hole in described precast slab has fixing groove, pad is installed in described fixing groove, and by nut and described pad, described precast slab and described precast concrete beam is fixed.
6. sleeper beam formula prefabrication and assembly construction concrete according to claim 3, it is characterized in that, upper surface from the end face of described mounting groove to described precast slab is provided with the blind hole corresponding with described fixing bar position, and described fixing bar inserts corresponding blind hole and described precast slab and described precast concrete beam fixed.
7. sleeper beam formula prefabrication and assembly construction concrete according to claim 6, it is characterized in that, the installing hole corresponding with described fixing bar position it is provided with in the side of described precast slab, it is inserted with steady pin in described installing hole, one end of described steady pin is inserted in described fixing bar, described precast slab and described precast concrete beam to be fixed.
8. sleeper beam formula prefabrication and assembly construction concrete according to any one of claim 1 to 7, it is characterised in that be provided with the built-in fitting for lifting and be in the milk in described precast slab.
9. the assembly method of a sleeper beam formula prefabrication and assembly construction concrete, it is characterised in that described sleeper beam formula prefabrication and assembly construction concrete is the sleeper beam formula prefabrication and assembly construction concrete according to any one of claim 1 to 8, and described method includes:
A plurality of precast concrete beam is lifted into the appointment position in construction area；
For each piece of precast slab, the top of the described a plurality of precast concrete beam described precast slab being lifted in construction area, when the mounting groove bottom described precast slab being directed at the position of each described a plurality of precast concrete beam, described precast slab is placed in described construction area；
By described precast slab and described precast concrete beam leveling and fixing after, dismantle the suspender in described precast slab, and be in the milk by suspender installation duct.
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| CN108532398A (en) * | 2018-05-02 | 2018-09-14 | 杨姝莉 | A kind of pre- assembling structure of pavement of road, constructing device and its construction method |
| CN110081960A (en) * | 2019-03-26 | 2019-08-02 | 四川奇石缘科技股份有限公司 | A kind of Prefabricated road vehicle dynamic weighing platform and its road construction installation method |
| CN111893844A (en) * | 2018-05-14 | 2020-11-06 | 杜春 | Use method of road pavement preassembly device |
| CN112498726A (en) * | 2020-12-10 | 2021-03-16 | 航天科工智能机器人有限责任公司 | Networking type removal type airport runway device |
| CN113005843A (en) * | 2021-04-01 | 2021-06-22 | 安徽虹达道路桥梁工程有限公司 | Recyclable ultrahigh-performance concrete assembled temporary pavement structure |
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| CN111893845B (en) * | 2018-05-14 | 2022-10-28 | 杜春 | Road pre-assembling device |
| CN111893844B (en) * | 2018-05-14 | 2022-11-08 | 杜春 | Use method of road pavement preassembly device |
| CN110081960A (en) * | 2019-03-26 | 2019-08-02 | 四川奇石缘科技股份有限公司 | A kind of Prefabricated road vehicle dynamic weighing platform and its road construction installation method |
| CN112498726A (en) * | 2020-12-10 | 2021-03-16 | 航天科工智能机器人有限责任公司 | Networking type removal type airport runway device |
| CN113005843A (en) * | 2021-04-01 | 2021-06-22 | 安徽虹达道路桥梁工程有限公司 | Recyclable ultrahigh-performance concrete assembled temporary pavement structure |
| CN113005843B (en) * | 2021-04-01 | 2022-05-03 | 安徽虹达道路桥梁工程有限公司 | Recyclable ultrahigh-performance concrete assembled temporary pavement structure |
| CN113823137A (en) * | 2021-08-10 | 2021-12-21 | 沃迪克（北京）工业技术有限公司 | Emergency rescue training facility |
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| CN105735076B (en) | 2018-03-13 |
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