CN108203921B - Steel-concrete mixed beam structure suitable for self-compaction concrete pouring - Google Patents
Steel-concrete mixed beam structure suitable for self-compaction concrete pouring Download PDFInfo
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- CN108203921B CN108203921B CN201810076170.6A CN201810076170A CN108203921B CN 108203921 B CN108203921 B CN 108203921B CN 201810076170 A CN201810076170 A CN 201810076170A CN 108203921 B CN108203921 B CN 108203921B
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- stiffening plate
- oblique stiffening
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- steel
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a steel-concrete mixed beam structure suitable for self-compacting concrete pouring and a design method thereof, belonging to the field of bridge engineering. The steel-concrete mixed beam structure suitable for pouring the self-compacting concrete changes the square thinking mode adopted by the conventional steel structure design, changes the oblique stiffening plates into a cross arrangement mode, is used as a concrete flow platform to assist the self-compacting concrete to reach a required position, and does not adopt a pumping pipe to directly pour at a high place, so that splashing of concrete aggregate is avoided, separation of concrete components is well avoided, and the method is favorable for discharging internal air, so that the steel-concrete mixed beam structure is also suitable for pouring other concrete which is similarly influenced by a construction space.
Description
Technical Field
The invention belongs to the field of bridge engineering, and particularly relates to a steel-concrete mixed beam structure suitable for pouring self-compacting concrete and a design method thereof, which are suitable for the design and construction of a steel-concrete combined beam bridge and the design and construction of other steel-concrete combined stressed structures.
Background
Along with the improvement of the self-compacting concrete mixing proportion, the structure adopting the self-compacting concrete construction process in the existing engineering is more and more, and the self-compacting concrete can reduce the vibration process in the concrete pouring process, so that the same compaction degree or strength index of the conventional concrete can be realized, and the self-compacting concrete mixing proportion is extremely helpful for the engineering limited by the construction environment and incapable of carrying out vibration. However, for ordinary strength concrete, or for large-area construction such as conventional terraces, even though the strength may be affected by the degree of compaction, the defect of compaction due to the adoption of self-compacting concrete can be avoided by improving the first-grade concrete under the condition that the unit cost is more and more similar. However, for high-strength concrete structures, it has been difficult to use the increased numbers to ensure strength properties and may lead to reduced workability of the concrete, especially for structures using high-strength concrete, which are usually the main stress members, the strength stability of which is directly determined. The method has great risks for the concrete construction with difficult vibration, high unit cost price and high structural stress safety grade by adopting a direct pouring method of conventional self-compacting concrete.
The steel-concrete hybrid beam is a structural form which is more used in bridge engineering in recent years and is applied to main beams of large-span continuous beams, continuous rigid frames, cable-stayed bridges and the like; the structure is stressed definitely, the high strength and the small consumption (corresponding light weight) of the steel are fully utilized, and the stress is balanced by combining the economical efficiency, the higher compressive strength and the large consumption (corresponding heavy weight) of the high-strength concrete. Because the girder section of the large-span bridge is high, the section is usually thinner in the process of converting the steel structure stress into concrete, the structural rigidity change is obvious, and in addition, the inside is designed with enough stiffening plates to avoid the instability of the steel plate, so that the concrete casting in the steel structure of the combined section cannot be implemented by adopting a vibrating method, or even if the concrete casting can be vibrated but is difficult to implement fully, because the stiffening plates or prestressed reinforcement pipelines, the inner partition space of the steel box and the like can not be directly entered by personnel, the vibrating rod cannot be operated flexibly.
Because the self-compaction concrete has good fluidity, in the casting process, if the high-altitude casting concrete slurry is adopted, aggregate and cement slurry are separated, more slurry is caused, so that the lower coarse and fine aggregate is separated and deposited at the bottom, the cement slurry is more on the upper part, the concrete strength and the standard proportioning strength of a laboratory are obviously different, and particularly, the upper slurry has larger shrinkage when too much slurry. This presents the possibility of the concrete coming off the roof in the steel box of the hybrid beam structure. Meanwhile, the air is not smoothly discharged due to the influence of stiffening plates in the box girder, particularly the influence of horizontal stiffening plates, and the air can be concentrated below the connecting surface of the horizontal stiffening plates and the vertical plates, so that the concrete and the steel plates can be separated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and aims to solve the problems in the existing mixed beam construction process, and provide a steel-concrete mixed beam structure suitable for self-compacting concrete pouring, which not only considers the stress requirement of the structure, but also can avoid the problem that internal bubbles of the self-compacting concrete cannot be discharged in the flowing process, and more importantly, can ensure that the self-compacting concrete cannot be separated from slurry in the pouring process, so that the strength is uneven, and the structural safety is ensured.
In order to achieve the above object, the present invention proposes the following technical solutions:
the invention provides a steel-concrete mixed beam structure suitable for self-compacting concrete pouring, which changes the square thinking mode adopted by the conventional steel structure design, adopts diagonal stiffening plates and adopts a cross arrangement mode as a concrete flow platform to assist the self-compacting concrete to reach a required position instead of directly pouring by adopting a pumping pipe at a high place, so that splashing of concrete aggregate is avoided, and separation of concrete components is well avoided, thus the steel-concrete mixed beam structure is also suitable for pouring other concrete similar to the limit of construction space.
The invention provides a steel-concrete mixed beam structure suitable for self-compacting concrete pouring, which comprises a steel box, a first oblique stiffening plate group and a second oblique stiffening plate group;
the steel box is formed by mutually overlapping a plurality of steel plates at the periphery of the steel box, and a first oblique stiffening plate group and a second oblique stiffening plate group are arranged in the steel box;
the first oblique stiffening plate group and the second oblique stiffening plate group which are arranged in the steel box are arranged at oblique angles; the first oblique stiffening plate group and the second oblique stiffening plate group are sequentially arranged at intervals in the steel box front and back, and the oblique directions of the first oblique stiffening plate group and the second oblique stiffening plate group are mirror images;
the first oblique stiffening plate group comprises a plurality of first oblique stiffening plates which are connected in sequence, and the first oblique stiffening plates are connected in sequence to form a fold line structure; the second oblique stiffening plate group comprises a plurality of second oblique stiffening plates which are connected in sequence, and the second oblique stiffening plates are connected in sequence to form a fold line structure; the adjacent first oblique stiffening plate and the second oblique stiffening plate which are arranged at an oblique angle show an X-shaped crossed structure which is staggered in space.
In the invention, the first oblique stiffening plate and the second oblique stiffening plate are used as temporary flowing platforms when the self-compacting concrete is poured, so that the self-compacting concrete flows along the oblique stiffening plate (the first oblique stiffening plate or the second oblique stiffening plate) and enters different space positions, namely, the self-compacting concrete flows downwards along the center of the oblique stiffening plate, flows towards the two sides of the oblique stiffening plate when flowing to the connection part of the oblique stiffening plate and the peripheral steel plate of the steel box, and falls onto the oblique stiffening plates at the two sides, wherein the path through which the self-compacting concrete flows is the concrete flow path.
Further, both ends of the first oblique stiffening plate and the second oblique stiffening plate in the length direction are provided with side exhaust holes, and the side exhaust holes are used for being used as channels for vertically exhausting lower bubbles together with the space left when the side exhaust holes are overlapped with the steel plates at the periphery of the steel box.
The self-compacting concrete flows from top to bottom along the concrete flow path, so that the concrete can be filled from bottom to top, and meanwhile, the lower gas can be discharged to the upper part of the inclined stiffening plate and is discharged through the exhaust hole.
Compared with the prior art, the invention has the beneficial effects that:
the invention changes the square stiffening structure form adopted in the internal design of the steel box in the conventional reinforced concrete combination section, adopts oblique stiffening, and avoids the problem that the gas caused by the stiffening of the conventional straight plate cannot be discharged to cause internal cavities in the condition that the components of the concrete are basically stable in the casting process of the concrete, thereby avoiding the risks of possible uneven stress and internal corrosion of the steel plate.
According to the self-compacting concrete flow platform, through the stiffening plate structures which are obliquely and crosswise arranged, slurry separation influenced by vertical pouring and splashing of concrete is avoided, and the uniformity of the concrete performance is ensured; because slant stiffening plate and side steel sheet overlap joint be vertical, replace partial pin or compensate pin atress defect, improve the structure atress, avoided current adoption large tracts of land level stiffening plate to open manhole personnel and get into welded construction degree of difficulty and the too much problem of trompil of steel sheet, can realize the side welding, simultaneously with the help of the supporting role of its dead weight, still be convenient for location and processing in its course of working.
The structural form provided by the invention not only can be used for a hybrid beam structure, but also is suitable for casting concrete in a steel box with small space and large depth.
Drawings
FIG. 1 is a layout of the steel-concrete hybrid beam structure suitable for self-compacting concrete casting;
fig. 2 is a layout diagram of a conventional steel-concrete joint section steel box structure.
Description of the reference numerals
1 steel box peripheral steel plate
2 inside vertical stiffening plate
3 inner side horizontal stiffening plate
4 exhaust holes
5 manhole
6 steel box peripheral steel plate
7 first oblique stiffening plate
8 second oblique stiffening plate
9 side exhaust holes
10 concrete flow path
Detailed Description
The technical scheme of the steel-concrete mixed beam structure and the design method suitable for self-compacting concrete pouring, which are provided by the invention, are further described below with reference to specific embodiments and drawings thereof. The advantages and features of the present invention will become more apparent in conjunction with the following description.
It should be noted that the embodiments of the present invention are preferred embodiments, and are not intended to limit the present invention in any way. The technical features or combinations of technical features described in the embodiments of the present invention should not be regarded as isolated, and they may be combined with each other to achieve a better technical effect. Additional implementations are also included within the scope of the preferred embodiments of the present invention and should be understood by those skilled in the art to which the embodiments of the present invention pertain.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative and not limitative. Thus, other examples of the exemplary embodiments may have different values.
The drawings of the invention are in a very simplified form and are not to scale precisely, but are for the purpose of illustrating embodiments of the invention conveniently and clearly, and are not intended to limit the scope of the invention. Any structural modification, proportional change or size adjustment should fall within the scope of the technical disclosure without affecting the effects and the achieved objects of the present invention. And the same reference numbers appearing in the figures represent the same features or elements, as may be used in different embodiments.
As shown in FIG. 1, the steel-concrete mixed beam structure suitable for self-compacting concrete pouring provided by the invention comprises a steel box, a first inclined stiffening plate group and a second inclined stiffening plate group. Wherein the steel box is formed by mutually overlapping a plurality of steel plates 6 at the periphery of the steel box; the steel box is internally provided with a first oblique stiffening plate group and a second oblique stiffening plate group.
In the invention, the first oblique stiffening plate group and the second oblique stiffening plate group arranged in the steel box are not horizontally or vertically arranged, but are obliquely arranged at an angle. Specifically, the first oblique stiffening plate group and the second oblique stiffening plate group are sequentially arranged at intervals in the steel box front and back, and the oblique directions of the first oblique stiffening plate group and the second oblique stiffening plate group are mirror images; further, the first oblique stiffening plate group is a fold line structure formed by a plurality of first oblique stiffening plates 7 which are connected in sequence, and the second oblique stiffening plate group is a fold line structure formed by a plurality of second oblique stiffening plates 8 which are connected in sequence. Thereby, the adjacent first and second diagonal stiffening plates 7 and 8 arranged at a diagonal angle exhibit a staggered X-shaped cross structure in space.
In the invention, the first oblique stiffening plate 7 and the second oblique stiffening plate 8 are used as temporary flowing platforms when the self-compacting concrete is poured, so that the self-compacting concrete flows along the oblique stiffening plate (the first oblique stiffening plate 7 or the second oblique stiffening plate 8) and enters different space positions, namely, the self-compacting concrete flows downwards along the center of the oblique stiffening plate, flows towards the two sides of the oblique stiffening plate when flowing to the joint of the oblique stiffening plate and the peripheral steel plate 6 of the steel box, and falls on the oblique stiffening plates at the two sides, wherein the path through which the self-compacting concrete flows is the concrete flow path 10. As shown in fig. 1, the direction indicated by the arrow is the concrete flow path 10; wherein, the self-compacting concrete flows along the direction of a unidirectional arrow and then flows along the direction of a bidirectional oblique arrow.
Further, both ends of the first oblique stiffening plate 7 and the second oblique stiffening plate 8 in the length direction are provided with side exhaust holes 9 for vertically exhausting the lower air bubbles together with the space left when the first oblique stiffening plate and the second oblique stiffening plate are overlapped with the steel plate 6 at the periphery of the steel box.
The self-compacting concrete flows from top to bottom along the concrete flow path 10, so that the concrete can be filled from bottom to top, and meanwhile, the lower gas can be discharged to the upper part of the inclined stiffening plate and is discharged through the exhaust hole 9.
Fig. 2 is a layout diagram of a conventional steel-concrete joint section steel box structure. As shown in fig. 1, a conventional steel-concrete combined section steel box comprises a steel box peripheral steel plate 1, an inner vertical stiffening plate 2 and an inner horizontal stiffening plate 3; wherein, a plurality of steel box peripheral steel plates 1 overlap joint constitutes the steel box, establishes the inboard vertical stiffening plate 2 of vertical distribution and the inboard horizontal stiffening plate 3 of horizontal distribution in the steel box. Further, the inner vertical stiffening plate 2 and the inner horizontal stiffening plate 3 are provided with exhaust holes 4, and the exhaust holes 4 can be used for exhausting concrete bubbles; concrete is poured through the manhole 5.
Compared with the steel box structure of the conventional steel-concrete combined section, the steel box structure has the advantages that the square stiffening structure form adopted by the internal design of the steel box in the conventional steel-concrete combined section is changed, oblique stiffening is adopted, the problem that the internal cavity exists due to the fact that gas cannot be discharged due to the fact that the existing straight plate stiffening is avoided under the condition that the components of concrete are basically stable in the casting process of the concrete, and the risks of possible uneven stress and internal corrosion of a steel plate are avoided.
According to the self-compacting concrete flow platform, through the stiffening plate structures which are obliquely and crosswise arranged, slurry separation influenced by vertical pouring and splashing of concrete is avoided, and the uniformity of the concrete performance is ensured; because slant stiffening plate and side steel sheet overlap joint be vertical, replace partial pin or compensate pin atress defect, improve the structure atress, avoided current adoption large tracts of land level stiffening plate to open manhole personnel and get into welded construction degree of difficulty and the too much problem of trompil of steel sheet, can realize the side welding, simultaneously with the help of the supporting role of its dead weight, still be convenient for location and processing in its course of working.
The structural form provided by the invention not only can be used for a hybrid beam structure, but also is suitable for casting concrete in a steel box with small space and large depth.
The above description is only illustrative of the preferred embodiments of the invention and is not intended to limit the scope of the invention in any way. Any alterations or modifications of the invention, which are obvious to those skilled in the art based on the teachings disclosed above, are intended to be equally effective embodiments, and are intended to be within the scope of the appended claims.
Claims (1)
1. The utility model provides a steel-concrete mixed beam structure suitable for self-compaction concrete pouring which characterized in that: the system comprises a steel box, a first oblique stiffening plate group and a second oblique stiffening plate group;
the steel box is formed by mutually overlapping a plurality of steel box peripheral steel plates (6), and a first oblique stiffening plate group and a second oblique stiffening plate group are arranged in the steel box;
the first oblique stiffening plate group and the second oblique stiffening plate group which are arranged in the steel box are arranged at oblique angles; the first oblique stiffening plate group and the second oblique stiffening plate group are sequentially arranged at intervals in the steel box front and back, and the oblique directions of the first oblique stiffening plate group and the second oblique stiffening plate group are mirror images;
the first oblique stiffening plate group comprises a plurality of first oblique stiffening plates (7) which are connected in sequence, and the first oblique stiffening plates (7) are connected in sequence to form a fold line structure; the second oblique stiffening plate group comprises a plurality of second oblique stiffening plates (8) which are connected in sequence, and the second oblique stiffening plates (8) are connected in sequence to form a fold line structure; adjacent first oblique stiffening plates (7) and second oblique stiffening plates (8) which are arranged at oblique angles show an X-shaped crossed structure which is staggered in space;
the first oblique stiffening plate (7) and the second oblique stiffening plate (8) are used as temporary flowing platforms when self-compacting concrete is poured; the self-compacting concrete flows downwards along the center of the first oblique stiffening plate (7) or the second oblique stiffening plate (8), and flows towards the two sides of the first oblique stiffening plate (7) or the second oblique stiffening plate (8) when flowing to the joint of the first oblique stiffening plate (7) or the second oblique stiffening plate (8) and the steel box peripheral steel plate (6), and falls onto the first oblique stiffening plate (7) or the second oblique stiffening plate (8) at the two sides, wherein the path through which the self-compacting concrete flows is a concrete flow path (10);
the two ends of the first oblique stiffening plate (7) and the second oblique stiffening plate (8) in the length direction are provided with side exhaust holes (9) which are used for being used as channels for vertically exhausting lower bubbles together with the space left when the first oblique stiffening plate and the second oblique stiffening plate are lapped with the peripheral steel plate (6) of the steel box.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810076170.6A CN108203921B (en) | 2018-01-26 | 2018-01-26 | Steel-concrete mixed beam structure suitable for self-compaction concrete pouring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810076170.6A CN108203921B (en) | 2018-01-26 | 2018-01-26 | Steel-concrete mixed beam structure suitable for self-compaction concrete pouring |
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| CN108203921A CN108203921A (en) | 2018-06-26 |
| CN108203921B true CN108203921B (en) | 2023-10-13 |
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB461722A (en) * | 1935-03-23 | 1937-02-23 | Andrea Ghira | Method for the manufacture of reinforced concrete masts |
| CH580484A5 (en) * | 1974-01-05 | 1976-10-15 | Hug Interlizenz Ag | |
| CN86103217A (en) * | 1985-04-09 | 1987-02-25 | 沃斯特-阿尔派因股份公司 | From the liquid that foaming trend is arranged, remove the equipment of the gentle body of devaporation continuously respectively |
| JPH06167111A (en) * | 1992-11-30 | 1994-06-14 | Ohbayashi Corp | Placing method of highly fluid concrete |
| EP1130165A2 (en) * | 2000-03-03 | 2001-09-05 | Kota A/S | Screed rail |
| CN2854058Y (en) * | 2005-06-07 | 2007-01-03 | 重庆新泰机械有限责任公司 | Drilling mud, gas separator |
| CN101824856A (en) * | 2010-04-21 | 2010-09-08 | 中南大学 | Laywire combination structure for concert buildings |
| CN203188631U (en) * | 2012-07-11 | 2013-09-11 | 上海建工五建集团有限公司 | Guiding device suitable for pouring steel pipe concrete structure and steel pipe concrete structure |
| CN203609926U (en) * | 2013-10-14 | 2014-05-28 | 承德江钻石油机械有限责任公司 | Separating device |
| CN104088281A (en) * | 2014-07-17 | 2014-10-08 | 中国水利水电第十四工程局有限公司 | Buffering device for vertical concrete conveyance |
| CN204151686U (en) * | 2014-09-25 | 2015-02-11 | 中铁大桥局集团有限公司 | A kind of deceleration type tumbling barrel for filling concrete |
| CN204960332U (en) * | 2015-07-30 | 2016-01-13 | 中建七局安装工程有限公司 | Conveyer pipe is pour perpendicularly to concrete |
| CN107060322A (en) * | 2017-04-15 | 2017-08-18 | 浙江兴远建设有限公司 | Concreting die carrier structure |
| CN107217849A (en) * | 2017-06-22 | 2017-09-29 | 青岛林川工程技术咨询有限公司 | A kind of concrete continuous blanking is segmented placing installation |
| CN107386090A (en) * | 2017-06-09 | 2017-11-24 | 中铁二院工程集团有限责任公司 | The more chamber box girder with corrugated steel webs constructions of combined type |
| CN207846195U (en) * | 2018-01-26 | 2018-09-11 | 四川公路桥梁建设集团有限公司大桥工程分公司 | Steel-concrete suitable for self-compacting concrete cast mixes girder construction |
-
2018
- 2018-01-26 CN CN201810076170.6A patent/CN108203921B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB461722A (en) * | 1935-03-23 | 1937-02-23 | Andrea Ghira | Method for the manufacture of reinforced concrete masts |
| CH580484A5 (en) * | 1974-01-05 | 1976-10-15 | Hug Interlizenz Ag | |
| CN86103217A (en) * | 1985-04-09 | 1987-02-25 | 沃斯特-阿尔派因股份公司 | From the liquid that foaming trend is arranged, remove the equipment of the gentle body of devaporation continuously respectively |
| JPH06167111A (en) * | 1992-11-30 | 1994-06-14 | Ohbayashi Corp | Placing method of highly fluid concrete |
| EP1130165A2 (en) * | 2000-03-03 | 2001-09-05 | Kota A/S | Screed rail |
| CN2854058Y (en) * | 2005-06-07 | 2007-01-03 | 重庆新泰机械有限责任公司 | Drilling mud, gas separator |
| CN101824856A (en) * | 2010-04-21 | 2010-09-08 | 中南大学 | Laywire combination structure for concert buildings |
| CN203188631U (en) * | 2012-07-11 | 2013-09-11 | 上海建工五建集团有限公司 | Guiding device suitable for pouring steel pipe concrete structure and steel pipe concrete structure |
| CN203609926U (en) * | 2013-10-14 | 2014-05-28 | 承德江钻石油机械有限责任公司 | Separating device |
| CN104088281A (en) * | 2014-07-17 | 2014-10-08 | 中国水利水电第十四工程局有限公司 | Buffering device for vertical concrete conveyance |
| CN204151686U (en) * | 2014-09-25 | 2015-02-11 | 中铁大桥局集团有限公司 | A kind of deceleration type tumbling barrel for filling concrete |
| CN204960332U (en) * | 2015-07-30 | 2016-01-13 | 中建七局安装工程有限公司 | Conveyer pipe is pour perpendicularly to concrete |
| CN107060322A (en) * | 2017-04-15 | 2017-08-18 | 浙江兴远建设有限公司 | Concreting die carrier structure |
| CN107386090A (en) * | 2017-06-09 | 2017-11-24 | 中铁二院工程集团有限责任公司 | The more chamber box girder with corrugated steel webs constructions of combined type |
| CN107217849A (en) * | 2017-06-22 | 2017-09-29 | 青岛林川工程技术咨询有限公司 | A kind of concrete continuous blanking is segmented placing installation |
| CN207846195U (en) * | 2018-01-26 | 2018-09-11 | 四川公路桥梁建设集团有限公司大桥工程分公司 | Steel-concrete suitable for self-compacting concrete cast mixes girder construction |
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| CN108203921A (en) | 2018-06-26 |
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Effective date of registration: 20240221 Address after: 610041 nine Xing Xing Road 12, hi tech Zone, Sichuan, Chengdu Patentee after: Sichuan Road and Bridge (Group) Co., Ltd. Country or region after: China Address before: No. 129, Jinli West Road, Qingyang District, Chengdu, Sichuan 610071 Patentee before: SICHUAN HIGHWAY BRIDGE CONSTRUCTION GROUP Co.,Ltd. BRIDGE ENGINEERING BRANCH Country or region before: China |