CN211947880U - Half-through type longitudinal block prefabricated box girder - Google Patents
Half-through type longitudinal block prefabricated box girder Download PDFInfo
- Publication number
- CN211947880U CN211947880U CN202020364197.8U CN202020364197U CN211947880U CN 211947880 U CN211947880 U CN 211947880U CN 202020364197 U CN202020364197 U CN 202020364197U CN 211947880 U CN211947880 U CN 211947880U
- Authority
- CN
- China
- Prior art keywords
- shape longeron
- longeron
- shape
- box girder
- shaped longitudinal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 3
- 238000009417 prefabrication Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract 1
- 239000004540 pour-on Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 7
- 238000009415 formwork Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000007306 turnover Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a well hold vertical piecemeal prefabricated box girder of formula, Z shape longeron A and Z shape longeron B set up for opposite directions, Z shape longeron A and Z shape longeron B's both ends are provided with and subsides the step, and Z shape longeron A and Z shape longeron B's both ends are passed through the end crossbeam and are connected, the bottom that is located Z shape longeron A, Z shape longeron B between the both ends crossbeam is passed through the wet seam connection of bottom plate, the superimposed sheet is assembled each other on the step on Z shape longeron A and Z shape longeron B upper portion, water the layer behind the roof and pour on Z shape longeron A, Z shape longeron B and superimposed. The utility model has the advantages that: the process has the advantages that the batch prefabrication of factories and the manufacture of a small part of operation sites are realized, the construction efficiency is improved, the labor environment of workers is improved, the influence on the traffic interference of municipal roads and the dust and noise pollution of urban environments is reduced, the requirements on transportation and installation equipment are low, the field conditions and the line conditions are also low, and the process can be flexibly applied to urban elevated partition structures.
Description
Technical Field
The utility model relates to a box girder erects technical field, especially well vertical piecemeal prefabricated box girder of formula of holding.
Background
The box girder is divided into a prefabricated box girder and a cast-in-place box girder. The prefabricated box girder can be prefabricated by whole holes or prefabricated by transverse sections, after the lower engineering is completed, large-scale transportation equipment and a bridge erecting frame are used for on-site erection or splicing, the construction progress is fast, the on-site operation time is short, but the turnover utilization rate of bridge erecting machine equipment is considered, and the overhead bridge girder is required to be continuously more than 10 kilometers. The cast-in-place box girder can be completed by adopting a mode of moving a slip form or erecting a full-space support on site, all operations are completed on site, the field operation time is long, and particularly the full-space support system has great influence on municipal roads and urban environment. The steel reinforced concrete box girder consists of prestressed reinforced concrete box girders, steel box girders and steel-concrete combination girders. The prestressed reinforced concrete box girder is constructed on site, and transverse prestress is also arranged in some cases besides longitudinal prestress; the steel box girder is generally processed in a factory and then transported to a site for installation, and has an all-steel structure and a partially reinforced concrete pavement layer.
The existing prefabricated box girder needs a large-scale bridge girder erection machine to erect during construction, the turnover utilization rate of bridge girder erection machine equipment is considered, the overhead bridge girder is required to be continuously more than 10 kilometers generally, the prefabricated box girder is inconvenient to transport in areas with complex terrain and inconvenient traffic, a prefabricated girder field is difficult to construct, the traditional prefabricated box girder process is difficult to adopt in the overhead region with shorter length, the cast-in-place process is intelligently adopted, the field operation time of each cross box girder needs about 2 months, the influence on municipal roads is large, and the construction period is long.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a site operation cycle is short, the case roof beam erects convenience, every prefabricated component monomer can realize from steady balanced state, vertically divides the prefabricated case roof beam of piece to the lower well formula of bearing of overhead interval continuous length requirement.
The purpose of the utility model is realized through the following technical scheme: the half-through longitudinal block prefabricated box girder comprises a Z-shaped longitudinal beam A, Z-shaped longitudinal beam B, a laminated slab, a bottom plate wet joint, an end cross beam and a top plate post-pouring layer, wherein the Z-shaped longitudinal beam A and the Z-shaped longitudinal beam B are oppositely arranged, settling steps are arranged at two ends of the Z-shaped longitudinal beam A and the Z-shaped longitudinal beam B, two ends of the Z-shaped longitudinal beam A and the Z-shaped longitudinal beam B are connected through the end cross beam, the bottom of the Z-shaped longitudinal beam A, Z-shaped longitudinal beam B between the cross beams at two ends is connected through the bottom plate wet joint, the laminated slab is mutually assembled on the steps on the upper portions of the Z-shaped longitudinal beam A and the Z-shaped longitudinal beam B, and the top plate post-pouring layer is poured on a cavity.
Preferably, a plurality of inverted T-shaped longitudinal beams are further arranged between the Z-shaped longitudinal beam A and the Z-shaped longitudinal beam B, gaps between the bottoms of the inverted T-shaped longitudinal beams and the bottom of the Z-shaped longitudinal beam A are connected through a bottom plate wet joint, gaps between the bottom of the inverted T-shaped longitudinal beam and the bottom of the Z-shaped longitudinal beam B are connected through a bottom plate wet joint, and the top of the inverted T-shaped longitudinal beam is pressed against the bottom of the laminated slab.
Preferably, Z shape longeron A and Z shape longeron B all have bottom plate, web and edge of a wing, and the beam bottom of Z shape longeron A and Z shape longeron B is less than roof beam middle part cross-section height, and the both ends of Z shape longeron A and Z shape longeron B have two diaphragms of unevenness, and the diaphragm of two unevenness forms and subsides the step, and the corresponding diaphragm between Z shape longeron A and Z shape longeron B and the space between the bottom plate are through watering the seam connection after.
Preferably, a step is arranged at the joint of the web and the upper surface of the flange, and two ends of the laminated slab are positioned on the step.
Preferably, the top of the outer side of the flange of the Z-shaped longitudinal beam is provided with a rib, and the upper surface of the top plate post-pouring layer is not higher than the upper surface of the rib.
Preferably, the laminated slab is a flat plate or an arched plate, and the top surface of the laminated slab is provided with connecting steel bars.
Preferably, the bottom plate is provided with a plurality of through holes.
Preferably, the web plate is provided with a plurality of vent holes.
Preferably, the gap between the bottom plates of the Z-shaped longitudinal beam A and the Z-shaped longitudinal beam B is connected by a post-cast strip, and the post-cast strip is connected with the end cross beam.
Preferably, two ends of the bottom plate are provided with prestressed anchor toothed plates according to requirements.
The utility model has the advantages of it is following: the utility model discloses a half-through longitudinal block prefabricated box girder, longitudinally divide traditional box girder into two symmetrical Z-shaped longerons, and top superimposed sheet, can add the longeron of the shape of falling T when necessary, the component monomer after the split dead weight is light, can adopt conventional engineering equipment to prefabricate, transport and hoist; in order to realize the self-stabilization target of the Z-shaped longitudinal beam during construction, the height of the beam section in the range of a beam end support is reduced and is in a bracket shape, and a box beam is in a half-through structure after the box beam is formed into a bridge; during installation, the longitudinal beam can be directly erected on a support of the lower structure to form an operation platform for later-stage cast-in-place construction, and a formwork support is prevented from being erected. The Z-shaped longitudinal beam, the inverted T-shaped longitudinal beam and the laminated slab are prefabricated and produced in a factory flow process; quickly hoisting the prefabricated parts in place by using engineering machinery, and connecting the prefabricated parts into a whole span box girder by using wet joints; according to the process for prefabricating the humidifying joint, most operations are completed in a factory, and a small number of operations are completed on site, so that the construction efficiency is improved, the labor environment of workers is improved, and the influence on municipal road traffic interference, urban environment dust and noise pollution is reduced. After the prefabricated parts and the lower structures are finished, the longitudinal beams can be installed to form the operation platform only through conventional equipment, then the longitudinal beams are used as the operation platform to pour end cross beams, wet joints of bottom plates and install laminated slabs, and top plate post-pouring layers are poured on the laminated slabs, so that erection of box girders is achieved. The process has low requirements on transportation and installation equipment and low site conditions and line conditions, so the process can be flexibly applied to urban elevated district structures.
Drawings
FIG. 1 is a schematic structural view of a Z-shaped longitudinal beam A;
FIG. 2 is a schematic mounting view of a Z-shaped longitudinal beam A and a Z-shaped longitudinal beam B;
FIG. 3 is a front view of a Z-stringer A;
FIG. 4 is a schematic cross-sectional view A-A of FIG. 3;
FIG. 5 is a schematic cross-sectional view of B-B of FIG. 3;
FIG. 6 is a schematic cross-sectional view of C-C of FIG. 3;
FIG. 7 is a schematic view of the installation of an inverted T stringer;
in the figure, 1-Z-shaped longitudinal beam A, 2-Z-shaped longitudinal beam B, 3-bottom plate wet joint, 4-end beam, 5-laminated slab, 6-top plate post-pouring layer, 7-settlement step, 8-diaphragm, 9-inverted T-shaped longitudinal beam, 11-bottom plate, 12-web plate, 13-flange, 14-rib, 15-vent hole, 16-drain hole, 17-toothed plate and 18-step.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 6, the half-through type longitudinal block prefabricated box girder comprises a Z-shaped longitudinal beam a1, a Z-shaped longitudinal beam B2, a laminated slab 5, a bottom plate 11 wet joint 3, an end cross beam 4, a top plate post-cast layer 6, a Z-shaped longitudinal beam a1 and a Z-shaped longitudinal beam B2 which are arranged oppositely, a Z-shaped longitudinal beam a1, a Z-shaped longitudinal beam B2 and the laminated slab 5 which are all prefabricated and processed in a factory and transported to a site for installation, of course, a shed can be built in a construction site, prefabrication of the Z-shaped longitudinal beam a1, the Z-shaped longitudinal beam B2 and the laminated slab 5 is completed in the shed, settlement steps 7 are arranged at two ends of the Z-shaped longitudinal beam a1 and the Z-shaped longitudinal beam B2, specifically, the Z-shaped longitudinal beam a1 and the Z-shaped longitudinal beam B2 both have a bottom plate 11, a web 12 and a flange 13, the web 12 is arranged in an outward inclining manner, so that the bottom part of the Z-shaped longitudinal beam a1 and the Z-shaped longitudinal beam B2 has a height less than that of the bottom part of the Z-shaped, the height of the transverse clapboard 8 at the outer side is smaller than that of the transverse clapboard 8 at the inner side, so that the two uneven transverse clapboards 8 form a settlement step 7, the gap between the corresponding transverse clapboard 8 and the bottom plate 11 between the Z-shaped longitudinal beam A1 and the Z-shaped longitudinal beam B2 is connected through a post-pouring wet joint, after the pouring of the wet joint at the bottom plate 11 and the transverse clapboard 8 is completed, the Z-shaped longitudinal beam A1 and the Z-shaped longitudinal beam B2 form a cofferdam-shaped structure, the top surface of a beam-end support is positioned in the waist area of the cross section of the whole box girder and is in a bracket shape, namely the beam-end support is supported on the settlement step 7, so that the self-stabilization target of the Z-shaped longitudinal beam during construction is realized, and the box; during installation, the longitudinal beam can be directly erected on a support of the lower structure to form an operation platform for later-stage cast-in-place construction, and a formwork support is prevented from being erected.
In this embodiment, as shown in fig. 1 to 5, two ends of a Z-shaped longitudinal beam a1 and a Z-shaped longitudinal beam B2 are connected through an end cross beam 4, the end cross beam 4 and a bottom plate 11 wet joint 3 connect the Z-shaped longitudinal beam a1 and the Z-shaped longitudinal beam B2 together, so as to ensure the connection strength of the Z-shaped longitudinal beam a1 and the Z-shaped longitudinal beam B2, during prefabrication, a part of cross beams can be prefabricated integrally with the Z-shaped longitudinal beam, further, a post-cast strip is cast between the Z-shaped longitudinal beam a1 and the Z-shaped longitudinal beam B2, the post-cast strip is connected with the inner side of the end cross beam 4, and during casting, the end cross beam 4 can be cast first, and the end cross beam 4 can also be cast together with the post-.
In the present embodiment, as shown in fig. 6, the composite slabs 5 are assembled and installed between the Z-shaped longitudinal beams a1 and the Z-shaped longitudinal beams B2, and the composite slabs 5 are located above the end beams 4, further, the connection between the web 12 and the upper surface of the flange 13 is provided with steps 18, two ends of the composite slabs 5 are located on the steps 18, the composite slabs 5 are flat plates or arch plates, and preferably, the composite slabs 5 are arch plates, which have high structural strength and strong bearing capacity compared with the flat plates.
In the embodiment, as shown in fig. 6, the top plate post-cast layer 6 is poured between the Z-shaped longitudinal beam a1, the laminated slab 5 and the Z-shaped longitudinal beam B2, further, the top of the outer side of the flange 13 is provided with the rib 14, the upper surface of the top plate post-cast layer 6 is not higher than the upper surface of the rib 14, preferably, the upper surface of the top plate post-cast layer 6 is flush with the upper surface of the rib 14, sand slurry is not easy to overflow through the rib 14, and the top plate post-cast layer 6 is convenient to pour.
In this embodiment, as shown in fig. 1, a plurality of through holes 16 are formed in a bottom plate 11, the through holes 16 are used for hoisting a bottom plate wet joint formwork in a construction period, the through holes 16 serve as drain holes in an operation period to drain away accumulated water in a box girder, further, a plurality of vent holes 15 are formed in a web 12, and the vent holes 15 can ventilate, so that when crosswind occurs, the vent holes 15 can ventilate, air pressure on the inner side and the outer side of the box girder is balanced, the use reliability of the box girder is ensured, and the hole positions can be properly adjusted if contradiction exists between the ventilation holes and a prestressed.
In this embodiment, as shown in fig. 3, toothed plates 17 are mounted at both ends of the bottom plate 11 for receiving concentrated loads when the bridge system is tensioned.
In the embodiment, the Z-shaped longitudinal beams A1, the Z-shaped longitudinal beams B2 and the composite slab 5 are prefabricated in a factory or a beam yard and then transported to a construction site for hoisting, after the Z-shaped longitudinal beams A1 and the Z-shaped longitudinal beams B2 are respectively installed on corresponding supports, the end cross beams 4 and the wet joints 3 of the bottom plate 11 are firstly poured, the post-cast strip can be poured together with the end cross beams 4, then the composite slab 5 is hoisted, and finally the top plate post-cast layer 6 is poured.
In the embodiment, as shown in fig. 7, when the beam width is larger, a plurality of inverted T-shaped longitudinal beams 9 need to be added between the Z-shaped longitudinal beam a1 and the Z-shaped longitudinal beam B2, that is, a plurality of inverted T-shaped longitudinal beams 9 are arranged between the Z-shaped longitudinal beam a1 and the Z-shaped longitudinal beam B2, a gap between the bottom of the inverted T-shaped longitudinal beam 9 and the bottom of the Z-shaped longitudinal beam a1 is connected through a bottom plate 11 wet joint 3, a gap between the bottom of the inverted T-shaped longitudinal beam 9 and the bottom of the Z-shaped longitudinal beam B2 is connected through a bottom plate 11 wet joint 3, the top of the inverted T-shaped longitudinal beam 9 is abutted against the bottom of the laminated slab 5, and the inverted T-shaped longitudinal beam 9 is used to enable the longitudinal block prefabricated box girder to be suitable for the box.
The utility model discloses a half-through longitudinal block prefabricated box girder, longitudinally divide traditional box girder into two symmetrical Z-shaped longerons, and top superimposed sheet 5, can add the longeron 9 of the shape of falling T when necessary, the component monomer after the split is light in dead weight, can adopt conventional engineering equipment to prefabricate, transport and hoist; in order to realize the self-stabilization target of the Z-shaped longitudinal beam during construction, the height of the beam section in the range of a beam end support is reduced and is in a bracket shape, and a box beam is in a half-through structure after the box beam is formed into a bridge; during installation, the longitudinal beam can be directly erected on a support of the lower structure to form an operation platform for later-stage cast-in-place construction, and a formwork support is prevented from being erected. The Z-shaped longitudinal beam, the inverted T-shaped longitudinal beam 9 and the laminated slab 5 are prefabricated and produced by adopting factory flow production; quickly hoisting the prefabricated parts in place by using engineering machinery, and connecting the prefabricated parts into a whole span box girder by using wet joints; according to the process for prefabricating the humidifying joint, most operations are completed in a factory, and a small number of operations are completed on site, so that the construction efficiency is improved, the labor environment of workers is improved, and the influence on municipal road traffic interference, urban environment dust and noise pollution is reduced. After the prefabricated parts and the lower structures are finished, the longitudinal beams can be installed to form the operation platform only through conventional equipment, then the longitudinal beams are used as the operation platform to pour the end cross beams 4, the wet joints 3 of the bottom plates 11 and the laminated slabs 5, and the top plate post-pouring layers 6 are poured on the laminated slabs 5, so that erection of the box girders is achieved. The process has low requirements on transportation and installation equipment and low site conditions and line conditions, so the process can be flexibly applied to urban elevated district structures.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. Well vertical piecemeal precast box girder of formula of holding, its characterized in that: pour the layer after A, Z shape longeron B, superimposed sheet, the wet seam of bottom plate, end crossbeam, roof of Z shape longeron A with Z shape longeron B sets up for in opposite directions, Z shape longeron A with Z shape longeron B's both ends are provided with and subside the step, just Z shape longeron A with Z shape longeron B's both ends are passed through the end crossbeam is connected, is located between the both ends crossbeam Z shape longeron A the bottom of Z shape longeron B passes through the wet seam of bottom plate is connected, the superimposed sheet is assembled each other on the step on Z shape longeron A and Z shape longeron B upper portion, it pours to pour the layer after the roof Z shape longeron A Z shape longeron B with superimposed sheet forms on the upper portion cavity.
2. The half-through longitudinal block precast box girder according to claim 1, wherein: still be provided with a plurality of shape longerons of falling T between Z shape longeron A and the Z shape longeron B, the bottom of the shape longeron of falling T with clearance between the Z shape longeron A bottom passes through the wet seam connection of bottom plate, the bottom of the shape longeron of falling T with clearance between the bottom of Z shape longeron B passes through the wet seam connection of bottom plate, the top of the shape longeron of falling T is in the bottom of superimposed sheet.
3. The half-through longitudinal block precast box girder according to claim 1 or 2, wherein: z shape longeron A and Z shape longeron B all have bottom plate, web and edge of a wing, just Z shape longeron A with Z shape longeron B's roof beam bottom is less than roof beam middle part cross-section height, Z shape longeron A with Z shape longeron B's both ends have two diaphragms of uneven height, and the diaphragm of two uneven heights forms subside the step, Z shape longeron A with between the Z shape longeron B corresponding the space between diaphragm and the bottom plate is through watering the seam connection after.
4. The half-through longitudinal block precast box girder according to claim 3, wherein: the web with the junction on edge of a wing upper surface is provided with the step, the both ends of superimposed sheet are located on the step.
5. The half-through longitudinal block precast box girder according to claim 4, wherein: the top of the outer side of the flange of the Z-shaped longitudinal beam is provided with a convex edge, and the upper surface of the top plate post-pouring layer is not higher than the upper surface of the convex edge.
6. The half-through longitudinal block precast box girder according to claim 5, wherein: the laminated slab is a flat plate or an arched plate, and the top surface of the laminated slab is provided with connecting steel bars.
7. The half-through longitudinal block precast box girder according to claim 6, wherein: the bottom plate is provided with a plurality of through holes.
8. The half-through longitudinal block precast box girder according to claim 7, wherein: the web plate is provided with a plurality of ventilation holes.
9. The half-through longitudinal block precast box girder according to claim 8, wherein: and a gap between the bottom plates of the Z-shaped longitudinal beam A and the Z-shaped longitudinal beam B is connected by adopting a post-cast strip, and the post-cast strip is connected with the end cross beam.
10. The half-through longitudinal block precast box girder according to claim 9, wherein: and prestressed anchor toothed plates are arranged at two ends of the bottom plate as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020364197.8U CN211947880U (en) | 2020-03-20 | 2020-03-20 | Half-through type longitudinal block prefabricated box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020364197.8U CN211947880U (en) | 2020-03-20 | 2020-03-20 | Half-through type longitudinal block prefabricated box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211947880U true CN211947880U (en) | 2020-11-17 |
Family
ID=73179807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020364197.8U Active CN211947880U (en) | 2020-03-20 | 2020-03-20 | Half-through type longitudinal block prefabricated box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211947880U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172856A (en) * | 2020-03-20 | 2020-05-19 | 重庆市轨道交通设计研究院有限责任公司 | Half-through type longitudinal block prefabricated box girder |
| CN113265949A (en) * | 2021-05-17 | 2021-08-17 | 中电建十一局工程有限公司 | Construction method of support-free concrete beam |
-
2020
- 2020-03-20 CN CN202020364197.8U patent/CN211947880U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172856A (en) * | 2020-03-20 | 2020-05-19 | 重庆市轨道交通设计研究院有限责任公司 | Half-through type longitudinal block prefabricated box girder |
| CN111172856B (en) * | 2020-03-20 | 2024-08-23 | 重庆市轨道交通设计研究院有限责任公司 | Middle-bearing type longitudinal block prefabricated box girder |
| CN113265949A (en) * | 2021-05-17 | 2021-08-17 | 中电建十一局工程有限公司 | Construction method of support-free concrete beam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107245934A (en) | A kind of assembled steel profiled sheet concrete combined board small box girder | |
| CN109797651B (en) | Flat combined box girder with corrugated steel plate inner mold | |
| CN108301545A (en) | A kind of big module overlapping contignation of the assembled with space truss temporary support | |
| CN211947880U (en) | Half-through type longitudinal block prefabricated box girder | |
| CN112458877A (en) | Assembled steel-concrete combined rigid frame bridge and construction method thereof | |
| CN112411355A (en) | Steel-concrete composite bridge and construction method thereof | |
| CN211522899U (en) | Long-span steel-concrete composite beam convenient to erect by bridge girder erection machine | |
| CN210086022U (en) | Assembled single-box multi-chamber corrugated steel web box girder | |
| CN214459548U (en) | Assembled steel and concrete combined rigid frame bridge | |
| CN111172856B (en) | Middle-bearing type longitudinal block prefabricated box girder | |
| CN219671054U (en) | Steel-concrete combined small box girder prefabricated by integral hoisting | |
| CN111851307A (en) | Large-span prefabricated assembly type corrugated web combined box girder transportation frame construction method | |
| CN112854438A (en) | Assembly type concrete frame system with exposed flat net rack floor and exposed truss girder | |
| CN114592440B (en) | Upper structure of assembled steel-concrete combined bridge and construction process thereof | |
| KR20090075484A (en) | Preflex composite girder bridge coupled width composite girder and method thereof | |
| CN214737289U (en) | Mounting structure for assembled elevated road and bridge | |
| CN211947881U (en) | Upper bearing type longitudinal block prefabricated box girder | |
| CN215758474U (en) | Assembled steel bridge of U-shaped section steel box girder | |
| CN111172855B (en) | Upper bearing type longitudinal block prefabricated box girder | |
| CN116927397A (en) | Support-free composite floor slab and construction method thereof | |
| CN211622203U (en) | Roofing component and assembled multilayer house | |
| CN210288825U (en) | Assembled and cast-in-situ combined beam plate structure | |
| CN212689323U (en) | Laminated wall board with transverse ribs | |
| CN211285212U (en) | Small box girder structure suitable for medium and small span simply supported girder bridge | |
| CN111172855A (en) | Upper bearing type longitudinal block prefabricated box girder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Building 1, No. 19 Wealth Avenue, North New District, Chongqing, 400000 (No. 3, 4, 5, and 6, 8th floor, Building A, No. 3 Wealth Park, Chongqing High tech) Patentee after: CHONGQING RAIL TRANSIT DESIGN AND RESEARCH INSTITUTE Co.,Ltd. Country or region after: China Patentee after: Chongqing Monorail Transit Engineering Group Co.,Ltd. Address before: Building 1, No. 19 Wealth Avenue, North New District, Chongqing, 400000 (No. 3, 4, 5, and 6, 8th floor, Building A, No. 3 Wealth Park, Chongqing High tech) Patentee before: CHONGQING RAIL TRANSIT DESIGN AND RESEARCH INSTITUTE Co.,Ltd. Country or region before: China Patentee before: CHONGQING MONORAIL TRAFFIC ENGINEERING CO.,LTD. |