CN113463664A - Cellular assembled lattice beam slope protection structure of dry joint - Google Patents
Cellular assembled lattice beam slope protection structure of dry joint Download PDFInfo
- Publication number
- CN113463664A CN113463664A CN202110767337.5A CN202110767337A CN113463664A CN 113463664 A CN113463664 A CN 113463664A CN 202110767337 A CN202110767337 A CN 202110767337A CN 113463664 A CN113463664 A CN 113463664A
- Authority
- CN
- China
- Prior art keywords
- prefabricated
- node
- lattice
- lattice beam
- slope protection
- 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.)
- Pending
Links
- 230000001413 cellular effect Effects 0.000 title description 5
- 238000010276 construction Methods 0.000 claims abstract description 13
- 238000004873 anchoring Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 2
- 238000013461 design Methods 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/205—Securing of slopes or inclines with modular blocks, e.g. pre-fabricated
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/14—Preformed blocks or slabs for forming essentially continuous surfaces; Arrangements thereof
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
本发明属于格构护坡技术领域，提供了一种干连接蜂窝状装配式格梁护坡结构。该蜂窝状装配式格梁护坡结构包括中间节点、三种边节点和格构梁；节点与格构梁之间通过搭接凹槽进行搭接，形成蜂窝状格构护坡结构。采用预制节点和预制格构梁的形式，现场装配安装，施工速度快，缩短工期，同时保证工程质量。节点与格构梁的连接方式简单，减少施工现场人员安排，节省人力物力。结构连接处无需现场浇筑混凝土，安装完成即可发挥作用，可快速发挥支护作用。
The invention belongs to the technical field of lattice slope protection, and provides a dry connection honeycomb-shaped assembled lattice beam slope protection structure. The honeycomb-shaped assembled lattice beam slope protection structure includes intermediate nodes, three kinds of edge nodes and lattice beams; the nodes and the lattice beams are overlapped by overlapping grooves to form a honeycomb lattice slope protection structure. Using the form of prefabricated nodes and prefabricated lattice beams, on-site assembly and installation, the construction speed is fast, the construction period is shortened, and the project quality is guaranteed. The connection between the node and the lattice beam is simple, which reduces the arrangement of construction site personnel and saves manpower and material resources. Structural joints do not need to be poured concrete on site, the installation can be completed and it can play a supporting role quickly.
Description
Technical Field
The invention belongs to the technical field of lattice slope protection, and relates to a dry-connection honeycomb fabricated lattice beam slope protection structure.
Background
The lattice anchoring technology is a protection technology widely applied to reinforcing road and railway embankments and water diversion projects slopes at present. The traditional side slope lattice beam is mainly cast in place by adopting concrete, and the problems that the engineering period is long, the structure maintenance quality is difficult to guarantee and the like exist. Because the side slope lattice beam exists in the natural environment, the long-term natural erosion causes the structure to be easily damaged, and engineering accidents can be caused. Due to the fact that the application time of the lattice anchoring technology is short, the current theoretical research is relatively short, the design is mainly carried out based on engineering practice experience, unreasonable phenomena occur in the design of the lattice beam, and unreasonable structural damage or landslide accidents are easily caused. The research new assembled slope protection structure can realize the quick reinforcement to the side slope on the one hand, shortens the engineering time limit for a project, practices thrift the cost, and on the other hand can replace existing damaged structure fast, restores current side slope, prevents the emergence of engineering accidents such as landslide.
Disclosure of Invention
Aiming at the problems of the lattice beam in the prior lattice anchoring technology, the invention provides a dry-connection honeycomb fabricated lattice beam slope protection structure, which solves the problems of long work period and incapability of ensuring the engineering quality in the prior engineering and can realize the rapid reinforcement of the prior slope.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
a dry connection cellular fabricated lattice beam slope protection structure comprises prefabricated nodes and prefabricated lattice beams 21, wherein the sections of the prefabricated lattice beams 21 are rectangular, and reinforcing cages are uniformly distributed in the prefabricated lattice beams and the prefabricated lattice beams; a pressure bearing plate is fixed on the end face of the prefabricated node, an anchor head for anchoring an anchor rod is placed on the upper portion of the pressure bearing plate, a reserved anchor rod hole is formed in the prefabricated node end face through the pressure bearing plate, and the anchor rod is fixed; the prefabricated nodes comprise a middle node 11, a first edge node 12, a second edge node 13 and a third edge node 14; the section of the middle node 11 is hexagonal, and middle node lap joint grooves 113 are formed in every other side surface of the six side surfaces; the first edge node 12 is pentagonal, two adjacent included angles are right angles, and two or three end faces are provided with first edge node lap grooves 123; the second side node 13 is T-shaped, and the three convex end surfaces are provided with second side node lap grooves 133; the third edge node 14 is in a L shape, and two convex end surfaces are provided with three lap grooves 143 of the edge node; the prefabricated nodes are overlapped with the prefabricated lattice beam 21 through the prefabricated node overlapping grooves to form a honeycomb assembly type lattice beam slope protection structure; the overlapping length of the prefabricated lattice beam 21 and the prefabricated node is 1-1.25 times of the height of the prefabricated lattice beam 21, a gap exists between the prefabricated node overlapping groove and the prefabricated lattice beam 21, the size of the cross section of the prefabricated node overlapping groove is compared with that of the prefabricated lattice beam, and a construction gap of 1-2cm is reserved on each side.
The cross sections of the middle node bearing plate (112) and the side node bearing plate (122) are hexagonal; the sections of the second edge node bearing plate (132) and the third edge node bearing plate (142) are quadrilateral.
The upper portion of the prefabricated node is provided with the bearing plate, so that load transmission between the anchor head of the anchor rod and the prefabricated node is achieved, and local damage to the upper surface of the node is prevented. Through the connection of prefabricated node and prefabricated lattice beam, finally form cellular assembled lattice beam slope protection structure, with the stock integrated application, realize the quick reinforcement to the side slope.
The prefabricated nodes and the prefabricated lattice beams are overlapped through the prefabricated node overlapping grooves, the prefabricated nodes and the prefabricated lattice beams are combined in a flat and neat mode, the combined effect among the prefabricated lattice beams is achieved, and a unified whole body is formed to reinforce the side slope.
The reservation of the anchor rod hole should meet the section requirement of the anchor rod, and meanwhile, the reservation cannot be too large, so that the large surface area of the node is ensured as much as possible, and the stress is more balanced.
The bearing plate adopts the hexagon steel sheet the same with the node, and corresponding anchor rod hole is reserved equally in the middle, and bearing plate thickness and area are adjusted according to anchor power size, guarantee that node upper surface atress is even, can not take place to destroy.
The construction method of the honeycomb fabricated lattice slope protection structure comprises the following steps:
step 1, prefabricating corresponding nodes and lattice beams in a factory, maintaining, and conveying finished products to a construction site after requirements are met;
step 2, cleaning a side slope, leveling the slope surface, determining the placing positions of the prefabricated nodes and the prefabricated lattice beams, positioning and paying off, and excavating a skeleton foundation groove;
and 3, drilling and cleaning the anchor rod hole at the corresponding position, and placing and grouting the anchor rod.
And 4, hoisting and placing the precast beam in the precast lattice beam foundation groove, and aligning and leveling.
And 5, hoisting and placing the prefabricated nodes at the prefabricated nodes, paying attention to the lap joint between the prefabricated nodes and the prefabricated lattice beams, and enabling the anchor rods to penetrate through reserved anchor rod holes of the prefabricated nodes. And the prefabricated nodes and the prefabricated lattice beams are adjusted to ensure that the structure is smooth, and the lap joint length meets the design requirement.
And 6, mounting a bearing plate above the prefabricated node, mounting an anchor head, tensioning the anchor rod, and finally sealing the anchor.
The invention has the beneficial effects that: the dry connection honeycomb assembly type lattice beam slope protection structure adopts the form of prefabricated nodes and prefabricated lattice beams, is assembled and installed on site, is high in construction speed, shortens the construction period and ensures the engineering quality. The connection mode of the prefabricated nodes and the prefabricated lattice beams is simple, the arrangement of staff on a construction site is reduced, and manpower and material resources are saved. The structural joint does not need to pour concrete in situ, can play a role after being installed, and can quickly reinforce the side slope.
The cellular assembled grider slope protection structure of dry connection can carry out the component prefabrication in the mill, and mass production improves utilization ratio of raw materials, reduces the production of building rubbish, is favorable to ecological environment protection, can effectively reduce the human input simultaneously, shortens the component preparation time limit for a project.
The dry connection honeycomb assembly type grid beam slope protection structure adopts a honeycomb shape, and uses less lattice structures under the condition of achieving the same reinforcing effect, so that the construction cost is lower.
Drawings
FIG. 1 is a schematic structural view of a prefabricated node and a prefabricated lattice beam after lap joint is completed;
FIG. 2 is a schematic diagram of an intermediate node;
FIG. 3 is a schematic diagram of an edge node;
FIG. 4 is a schematic diagram of an edge node B;
FIG. 5 is a schematic diagram of an edge node III;
in the figure, 11, intermediate nodes; 111. a middle node anchor rod hole; 112. a middle node bearing plate; 113. the middle node is lapped with the groove; 12. a first edge node; 121. the side node is provided with an anchor rod hole; 122. a bearing plate is arranged at the edge node; 123. a lap joint groove of the edge node; 13. a second edge node; 131. two anchor rod holes of the side node; 132. a second edge node bearing plate; 133. the second side node is in lap joint with the groove; 14. a third edge node; 141. three anchor rod holes are arranged at the side nodes; 142. three bearing plates at the edge nodes; 143. the side node three is overlapped with the groove; 21. prefabricating a lattice beam;
Detailed Description
For a better understanding of this patent, specific embodiments of the invention are described below:
the following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Examples
As shown in fig. 1, the prefabricated structure comprises two parts, namely a prefabricated node and a prefabricated lattice beam, the cross section of the lap joint groove of the prefabricated node is reserved according to the size of the cross section of the prefabricated lattice beam, the lap joint length is designed according to actual needs, and the prefabricated node comprises an anchor rod hole 111, a pressure bearing plate 121 and a lap joint groove 131, wherein the middle of the anchor rod hole is used for anchoring an anchor rod. The prefabricated lattice beam mainly comprises an internal reinforcement cage and concrete. The concrete strength of the prefabricated lattice beam is not less than C20, and the size of the longitudinal bar is not less than
The size of the stirrup is not less than
The concrete protective layer is not less than 30mm, and the length of the beam is preferably 2-3 m.
The bearing plate on prefabricated node upper portion can design for hexagon or circular, and circular anchor rod hole is reserved to the centre, and the bearing plate is steel, and the anchor head that is used for the anchor stock is placed on upper portion, bears the load of anchor head transmission, prevents that node upper surface atress is too big, causes the local pressurized of node to destroy.
The detailed construction method of the structure comprises the following steps:
and step one, performing corresponding calculation and design according to the slope condition, completing reinforcement distribution of the prefabricated nodes and the prefabricated lattice beams, and performing production of the prefabricated nodes and the prefabricated lattice beams according to the design. When replacing the existing slope supporting structure, attention is paid to the matching of the length of the prefabricated lattice beam and the distance of the existing anchor rods. Maintaining according to the standard after the prefabrication of the components is finished, and conveying to a construction site after the standard is reached;
and step two, finishing the side slope field, cleaning up the floating soil on the surface of the side slope to ensure that the surface of the field is generally flat, determining the positions of corresponding anchoring points and prefabricated lattice beams according to design measurement, excavating foundation trenches according to the determined positions and flattening the side slope again. When replacing the existing slope supporting structure, the existing slope supporting structure needs to be cleaned, and the slope needs to be leveled, so that the new structural requirements can be met.
And step three, drilling and arranging anchor rods according to the designed anchor rod positions, placing the prefabricated lattice beams at corresponding positions after the anchor rods are installed, adjusting the positions of the prefabricated lattice beams, and leveling the field again. And hoisting and placing the prefabricated nodes at the positions of the reserved nodes, and aligning the prefabricated lattice beams to the lap joint grooves on the nodes to complete the placement of the prefabricated nodes. The structure is locally adjusted, so that the structure is smooth and the lap joint is correct.
And step four, repeating the steps, and installing the prefabricated lattice beams and the prefabricated nodes at the positions of each corresponding prefabricated node and each corresponding prefabricated lattice beam, so that the framework lap joint of the side slope supporting structure is realized, and the flatness of the whole structure is ensured.
And fifthly, mounting a bearing plate and an anchor head above the prefabricated node, sequentially penetrating the anchor rod through the prefabricated node, the bearing plate and the anchor head, and tensioning the anchor rod to design the tension of the anchor rod. And meanwhile, the position conditions of the prefabricated lattice beams and the prefabricated nodes are observed, and if the prefabricated lattice beams and the prefabricated nodes are displaced to be adjusted, the supporting structure is kept smooth all the time, so that the side slope is supported.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110767337.5A CN113463664A (en) | 2021-07-07 | 2021-07-07 | Cellular assembled lattice beam slope protection structure of dry joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110767337.5A CN113463664A (en) | 2021-07-07 | 2021-07-07 | Cellular assembled lattice beam slope protection structure of dry joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113463664A true CN113463664A (en) | 2021-10-01 |
Family
ID=77879059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110767337.5A Pending CN113463664A (en) | 2021-07-07 | 2021-07-07 | Cellular assembled lattice beam slope protection structure of dry joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113463664A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529707A (en) * | 2021-08-10 | 2021-10-22 | 哈尔滨工业大学 | Umbrella-shaped light anchor rod, slope supporting structure and construction method thereof |
| CN114603698A (en) * | 2022-04-14 | 2022-06-10 | 云南城投中民昆建科技有限公司 | Prefabricated net roof beam cross connecting piece |
| CN114892598A (en) * | 2022-06-10 | 2022-08-12 | 重庆第二师范学院 | Slope protection device and construction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202416331U (en) * | 2012-01-05 | 2012-09-05 | 北京丰林源生态园林设计研究院有限公司 | Lattice component used in slope protection |
| CN103352444A (en) * | 2013-07-18 | 2013-10-16 | 管大为 | Lattice type river bank revetment structure and construction method thereof |
| CN205296071U (en) * | 2016-01-20 | 2016-06-08 | 张静 | Hydraulic engineering slope net |
| JP2017036592A (en) * | 2015-08-10 | 2017-02-16 | 吉佳エンジニアリング株式会社 | Pressure plate |
| CN110106896A (en) * | 2019-06-03 | 2019-08-09 | 南华大学 | A kind of prefabricated card slot type anchor pier lattice girder construction and assembling constructing method of slope reinforcement |
| CN209538120U (en) * | 2018-10-23 | 2019-10-25 | 中交第二航务工程勘察设计院有限公司 | A kind of novel ecological slope protection structure |
| CN213267936U (en) * | 2020-07-24 | 2021-05-25 | 内蒙古蒙创生态技术有限公司 | Assembled bee lattice greening protective framework |
-
2021
- 2021-07-07 CN CN202110767337.5A patent/CN113463664A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202416331U (en) * | 2012-01-05 | 2012-09-05 | 北京丰林源生态园林设计研究院有限公司 | Lattice component used in slope protection |
| CN103352444A (en) * | 2013-07-18 | 2013-10-16 | 管大为 | Lattice type river bank revetment structure and construction method thereof |
| JP2017036592A (en) * | 2015-08-10 | 2017-02-16 | 吉佳エンジニアリング株式会社 | Pressure plate |
| CN205296071U (en) * | 2016-01-20 | 2016-06-08 | 张静 | Hydraulic engineering slope net |
| CN209538120U (en) * | 2018-10-23 | 2019-10-25 | 中交第二航务工程勘察设计院有限公司 | A kind of novel ecological slope protection structure |
| CN110106896A (en) * | 2019-06-03 | 2019-08-09 | 南华大学 | A kind of prefabricated card slot type anchor pier lattice girder construction and assembling constructing method of slope reinforcement |
| CN213267936U (en) * | 2020-07-24 | 2021-05-25 | 内蒙古蒙创生态技术有限公司 | Assembled bee lattice greening protective framework |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529707A (en) * | 2021-08-10 | 2021-10-22 | 哈尔滨工业大学 | Umbrella-shaped light anchor rod, slope supporting structure and construction method thereof |
| CN114603698A (en) * | 2022-04-14 | 2022-06-10 | 云南城投中民昆建科技有限公司 | Prefabricated net roof beam cross connecting piece |
| CN114892598A (en) * | 2022-06-10 | 2022-08-12 | 重庆第二师范学院 | Slope protection device and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101914925B (en) | Basement by using optimized composite prefabricated arch wall as external wall | |
| CN113463664A (en) | Cellular assembled lattice beam slope protection structure of dry joint | |
| CN109944250B (en) | Foundation pit forward and backward combined construction method of non-permanent vertical supporting system | |
| CN209099601U (en) | A kind of UHPC ultra-high performance concrete steel bar girder laminated floor slab | |
| CN203475598U (en) | Shock-proof prefabricated building of steel bar truss shearing wall composite structure | |
| CN103397696A (en) | Building adopting aseismatic precasted reinforcing steel truss shear wall composite structure | |
| CN106351258B (en) | A kind of full precast assembly steel concrete combination underground pipe gallery | |
| CN108775084B (en) | Steel-concrete composite prefabricated beam and prefabricated column connection structure and construction method | |
| CN107905251A (en) | A kind of module prestressing force Retaining Wall and its assembly method | |
| CN104179249A (en) | Assembled composite-structure earthquake-resistant wall and assembly method thereof | |
| CN212128825U (en) | Prefabricated integrated pier-column-cap-beam composite structure | |
| CN207944590U (en) | A kind of assembled steel frame-prefabricated steel reinforced concrete shear wall structure system | |
| CN207498985U (en) | A kind of partial precast assembly steel concrete combination underground pipe gallery for exempting from template | |
| CN110439291B (en) | Assembly type production construction method suitable for low-rise building | |
| CN113502835A (en) | Wet cellular assembled gridwork roof beam slope protection structure of connecting | |
| CN211548015U (en) | Prefabricated assembled steel-concrete composite beam | |
| CN207376945U (en) | A kind of concrete prefabricated wallboard of steel bar girder and structural system | |
| CN212103638U (en) | A connection structure for segmental prefabricated pier combination | |
| CN107514012A (en) | A kind of partial precast assembly steel concrete combination underground pipe gallery for exempting from template | |
| CN204609121U (en) | A kind of precast truss frame beam | |
| CN219622069U (en) | Assembled light steel strip hollow steel bar truss concrete strip superposed two-way floor slab | |
| CN115262832B (en) | Bolt connection assembled reinforced concrete two-way rib heat-insulation floor system | |
| CN214574094U (en) | Assembled prestressing force open caisson basis | |
| CN214657161U (en) | Rectangular staggered joint assembled well wall structure | |
| CN109972657A (en) | Piles and culverts integrally assembled steel-reinforced concrete comprehensive pipe gallery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |