CN106703306B - Precast concrete parapet component and connection structure thereof - Google Patents
Precast concrete parapet component and connection structure thereof Download PDFInfo
- Publication number
- CN106703306B CN106703306B CN201710038287.0A CN201710038287A CN106703306B CN 106703306 B CN106703306 B CN 106703306B CN 201710038287 A CN201710038287 A CN 201710038287A CN 106703306 B CN106703306 B CN 106703306B
- Authority
- CN
- China
- Prior art keywords
- parapet
- precast concrete
- concrete
- prefabricated
- vertical
- 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
- 239000011178 precast concrete Substances 0.000 title claims abstract description 88
- 239000004567 concrete Substances 0.000 claims abstract description 59
- 239000002131 composite material Substances 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 230000010485 coping Effects 0.000 claims description 10
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/14—Junctions of roof sheathings to chimneys or other parts extending above the roof
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Load-Bearing And Curtain Walls (AREA)
Abstract
The invention relates to a prefabricated concrete parapet component and a connection structure thereof. The connecting structure of the prefabricated concrete parapet members comprises prefabricated concrete parapet members, prefabricated concrete constructional columns connected with main structural members are arranged at two ends of the prefabricated concrete parapet members, the prefabricated concrete constructional columns serve as horizontal connecting supports of the prefabricated concrete parapet members, and the bottoms and two ends of the prefabricated concrete parapet members are connected with the main structural members through connecting pieces. The invention not only can ensure the reliable connection of the precast concrete parapet member and the main structure member, can effectively resist the overturning effect of the horizontal load on the precast concrete parapet member, but also has convenient and rapid construction and installation, and is suitable for industrialized construction.
Description
Technical Field
The invention relates to a precast concrete parapet used in the design and construction of building structure engineering and a connection structure thereof, belonging to the innovation technology in the technical field of building engineering fabricated concrete structures.
Background
In order to really realize the effects of the prefabricated building in the aspects of energy conservation, emission reduction and production efficiency improvement, the prefabricated concrete structure should adopt prefabricated concrete components as far as possible to improve the prefabrication rate of a structural system. The prefabricated concrete parapet is an indispensable component in a prefabricated concrete structure, and the connection between the parapet serving as a non-structural component and a main structural component is one of important factors influencing the safety of the whole structure. At present, the research data and the results aiming at the precast concrete parapet in the prefabricated concrete structure in China are less. There is only one general design method of precast concrete parapet for shear wall structures, and it is suitable for pre-erection construction, in which: the prefabricated parapet wall is divided into a prefabricated wall body and a prefabricated coping component, the prefabricated concrete parapet wall body is fixed and positioned at first, and the lower end of the prefabricated wall body is connected with the shear wall at the top layer of the structure by adopting steel bar sleeve grouting; two ends of the parapet wall body are reserved with horizontal connecting ribs which extend into the post-cast sections of the shear wall on the top layer of the structure and extend upwards, and the post-cast sections are connected in a cast-in-place mode; prefabricated parapet bears down on one and reserves the hole, passes through pre-buried anchor bar in the wall with prefabricated parapet and is connected. The method adopts various connection methods and has more wet operation procedures. The connection of wall upper end and lower extreme all requires accurate connection location, and the width broad of post-cast section between two blocks of walls, and the installation need use instruments such as more templates to make the work progress comparatively complicated, has restricted its popularization and application under different conditions.
Disclosure of Invention
The invention aims to provide a precast concrete parapet member. The invention has simple structure, convenience and practicability.
Another object of the present invention is to provide a connection structure of precast concrete parapet members. On the premise of ensuring safe and reliable connection between the parapet and the main structure, the invention has the advantages of dry connection as the main part, less wet operation amount, adjustable connection and positioning, flexibility and convenience in field installation, thereby simplifying the construction of the parapet with the prefabricated concrete structure and being easy to popularize and apply.
The technical scheme of the invention is as follows: the prefabricated concrete parapet member comprises a parapet wall body, brackets and parapet coping, wherein the parapet coping is connected with the brackets through the parapet wall body.
According to the connecting structure of the precast concrete parapet members, the precast concrete constructional columns connected with the main structural member are arranged at the two ends of the precast concrete parapet members, the precast concrete constructional columns are used as horizontal connecting supports of the precast concrete parapet members, and the bottoms and the two ends of the precast concrete parapet members are connected with the main structural member through connecting pieces.
The lower end of the prefabricated concrete parapet component is connected with the main structural component through dowel grouting, the left end and the right end of the prefabricated concrete parapet component are connected with the prefabricated constructional column through bolts, and the prefabricated concrete parapet component is firmly connected with the main structural component through the two connection modes. The reliable connection of the vertical connecting steel bars embedded in the prefabricated constructional column and the main structural member ensures that the prefabricated constructional column can be used as a horizontal connecting support of the prefabricated concrete parapet member, and the horizontal load born by the prefabricated concrete parapet member is effectively transmitted to the main structural member. The connecting structure is convenient for installation and construction of the prefabricated parapet member, the bracket at the bottom of the prefabricated concrete parapet member can be directly placed on a concrete cast-in-place layer when the prefabricated concrete parapet member is installed, temporary support is avoided when the prefabricated concrete parapet member is installed and positioned, the hole-aligning installation of the embedded connecting anchor bars in the main structural member and the preformed holes in the bracket is convenient, and the problem that the embedded anchor bars are difficult to position does not exist. The invention provides a novel connecting mode of a precast concrete parapet and an assembled reinforced concrete structure main body, which has the advantages of simple construction, simple structure, reasonable stress, convenience and practicability.
Drawings
FIG. 1 is a schematic side elevation view of a prefabricated parapet wall, a prefabricated concrete composite beam and a prefabricated concrete composite slab according to the present invention;
FIG. 2 is a schematic side elevation view of the prefabricated parapet of the present invention in connection with a prefabricated concrete shear wall and a prefabricated concrete composite slab;
FIG. 3 is a schematic view of a precast concrete parapet member of the present invention;
FIG. 4 is a schematic elevation view of a prefabricated parapet of the present invention in connection with a host structure;
FIG. 5 is a schematic view of a hook-shaped reinforcing rib vertically disposed through the preformed hole according to the present invention;
FIG. 6 is a schematic view of the angle between the prefabricated parapet and the prefabricated concrete construction column of the present invention;
FIG. 7 is a schematic view of the connection between bolts and angle steels embedded in the prefabricated parapet wall of the present invention;
FIG. 8 is a schematic elevation view of a prefabricated parapet wall and prefabricated concrete construction column according to the present invention;
FIG. 9 is a schematic cross-sectional view of a prefabricated parapet of the present invention in connection with a prefabricated concrete construction column;
FIG. 10 is a schematic view of embedments within a precast concrete construction column of the present invention.
Detailed Description
The prefabricated concrete parapet component comprises a parapet wall body 1, brackets 2 and parapet coping 3, wherein the parapet coping 3 is connected with the brackets 2 through the parapet wall body 1.
In this embodiment, the parapet wall body 1, the corbel 2 and the parapet coping 3 are formed into a prefabricated reinforced concrete member by one-step pouring.
In this embodiment, the section of the prefabricated reinforced concrete member cast by the parapet wall body 1, the corbel 2 and the parapet coping 3 is a groove shape.
According to the connecting structure of the precast concrete parapet members, the precast concrete constructional columns 4 connected with the main structural member are arranged at the two ends of the precast concrete parapet members, the precast concrete constructional columns 4 serve as horizontal connecting supports of the precast concrete parapet members, and the bottoms and the two ends of the precast concrete parapet members are connected with the main structural member through connecting pieces.
In this embodiment, the main structural member connected to the precast concrete parapet member is the precast concrete composite beam 5 or the precast concrete shear wall 14, and the precast concrete composite beam 5 or the precast concrete shear wall 14 is connected to the bottom of the precast concrete parapet member.
In this embodiment, a vertical through preformed hole 8 is arranged in a bracket 2 at the lower end of the precast concrete parapet member, a precast concrete composite slab 7 is arranged beside the precast concrete composite beam 5 or the precast concrete shear wall 14, the bracket 2 is placed on a concrete cast-in-place layer 6 of the precast concrete composite beam 5 and the precast concrete composite slab 7 or on a concrete cast-in-place layer 6 of the precast concrete shear wall 14 and the precast concrete composite slab 7, and an anchor bar pre-embedded in the precast concrete composite beam 5 or the precast concrete shear wall 14 penetrates through the concrete cast-in-place layer 6 to be inserted into the vertical through preformed hole 8 to form bottom connection with the parapet member
In this embodiment, the vertical connecting steel bars 19 are embedded in the precast concrete composite beam 5 or the precast concrete shear wall 14, and the vertical connecting steel bars 19 are connected with the precast concrete constructional column 4 by the grouting sleeves 20.
In this embodiment, the connecting piece between parapet wallboard 1 of precast concrete parapet component and precast concrete constructional column 4 is angle steel 12, and one side of angle steel 12 and the anchor slab of embedded part 13 in precast concrete constructional column 4 weld, and the opposite side of angle steel 12 and the pre-buried bolt 11 in parapet wallboard 1 pass through nut 17 to be connected.
In the embodiment, the angle steel 12 and an anchor plate of an embedded part in the precast concrete constructional column 4 are subjected to three-side girth welding; the angle steel 12 is provided with a reserved connecting hole at the position connected with the parapet wall board 1, and the reserved connecting hole is oval so as to be flexibly adjusted and positioned during construction and installation.
In the embodiment, a plurality of vertical through preformed holes 8 are formed in a bracket 2 of the precast concrete parapet member, and the positions of the vertical through preformed holes 8 are aligned with vertical anchor bars 9 pre-embedded in a precast concrete superposed beam 5 or a precast concrete shear wall 14 at the lower part; and two annular-hole hook-shaped reinforcing ribs 10 are vertically arranged on each vertical through preformed hole 8, and the vertical through preformed holes 8 are inserted into the vertical anchor bars 9 to fill high-strength grouting material. In this embodiment, the bracket 2 is provided with vertical through preformed holes 8 at intervals of 1 meter.
The connecting structure can be applied to the prefabricated structure with high prefabrication rate, not only can ensure the safety of the structure, but also can simplify the construction and meet the fundamental requirement of convenient site construction and installation of the prefabricated concrete structure.
The method for implementing the connecting structure of the precast concrete parapet member of the present invention is shown in fig. 1 and 4. The connection implementation process comprises the following four steps:
the method comprises the following steps: after the main structure prefabricated components, namely the prefabricated concrete composite beam 5 and the prefabricated concrete composite slab 7 in the figure are positioned, installed and bound by reinforcing steel bars, the pouring of the concrete cast-in-place layer 6 of the prefabricated concrete composite beam 5 and the prefabricated concrete composite slab 7 is carried out, as shown in figure 1;
step two: after the concrete strength of the concrete cast-in-place layer 6 reaches the expected strength, positioning and installing the precast concrete constructional column 4, aligning a grouting sleeve 20 pre-embedded at the lower end of the precast concrete constructional column 4 with a vertical connecting steel bar 19 pre-embedded in the precast concrete superposed beam 5, implementing a connecting procedure of the grouting sleeve 20, and completing the installation of the precast concrete constructional column 4;
step three: mounting and positioning prefabricated parapet components, aligning vertical through preformed holes 8 in the brackets 2 with vertical anchor bars 9 pre-buried in the prefabricated concrete composite beams 5 when the prefabricated parapet is hoisted and positioned, inserting the pre-buried vertical anchor bars 9 into the vertical through preformed holes 8 in the brackets 2, and then placing the parapet brackets 2 on the prefabricated concrete composite beams 5 and post-cast concrete composite layers 6 of the prefabricated concrete composite plates 7 to complete mounting and positioning of the prefabricated parapet components;
step four: welding one side of the angle steel 12 with an anchor plate 13 pre-embedded in the precast concrete constructional column 4 in a surrounding manner; the L-shaped bolt 11 pre-embedded in the parapet wall body 1, the pre-embedded anchor plate 15, the angle steel 12 and the backing plate 16 are screwed and fixed by the nut 17, as shown in the figure 7 and the figure 8; because the reserved connecting holes on the angle steel 12 and the backing plate 16 are oval, the bolt 11 can be horizontally adjusted and positioned in the reserved connecting holes, so that the positioning difficulty of the parapet wall body 1 and the precast concrete constructional column 4 is reduced, and the field connection operation is simple and easy to implement; and finally, filling the vertical through preformed hole 8 in the bracket 2 with high-strength grouting material.
In the connection implementation method of the precast concrete parapet and the main structural member of the precast concrete shear wall 14 and the precast concrete composite slab 7, the vertical anchor bars 9 are only required to be embedded in the precast concrete shear wall 14, as shown in fig. 2. The concrete implementation method is the same as the connection implementation method of the precast concrete superposed beam 5 and the precast roof slab 7.
The invention has been successfully applied to the industrial design research of reinforced concrete teaching buildings, and the application experience shows that the reliable connection of the prefabricated parapet can be realized by adopting the connection mode, the construction difficulty is obviously reduced, and the construction quality of the assembled components is improved, so that the construction speed is improved, and the investment cost is reduced.
Claims (5)
1. A connection structure of a precast concrete parapet component comprises a parapet wall body, brackets and a parapet coping, wherein the parapet coping is connected with the brackets through the parapet wall body;
the main structural member connected with the prefabricated concrete parapet member is a prefabricated concrete composite beam or a prefabricated concrete shear wall, and the prefabricated concrete composite beam or the prefabricated concrete shear wall is connected with the bottom of the prefabricated concrete parapet member;
vertical through preformed holes are formed in the bracket at the lower end of the precast concrete parapet component; the side edge of the precast concrete composite beam or the precast concrete shear wall is provided with a precast concrete composite slab, the bracket is placed on a concrete cast-in-place layer of the precast concrete composite beam and the precast concrete composite slab or on a concrete cast-in-place layer of the precast concrete shear wall and the precast concrete composite slab, and a vertical anchor bar pre-embedded in the precast concrete composite beam or the precast concrete shear wall penetrates through the concrete cast-in-place layer and is inserted into a vertical through reserved hole to be filled with high-strength grouting material to form bottom connection with a precast concrete parapet member;
vertical connecting steel bars are embedded in the precast concrete superposed beams or the precast concrete shear walls, and the vertical connecting steel bars are connected with the precast concrete constructional columns through grouting sleeves;
the connecting piece between the parapet wall body of precast concrete parapet component and the precast concrete constructional column is the angle steel, and one side of angle steel and the anchor slab welding of built-in fitting in the precast concrete constructional column, the opposite side of angle steel passes through the nut with the pre-buried bolt in the parapet wall body and is connected.
2. The connecting structure of precast concrete parapet members according to claim 1, wherein the angle steel is welded with anchor plates of embedded parts in the precast concrete constructional column by a three-sided girth welding method; the angle steel is provided with a reserved connecting hole at the position connected with the parapet wall body.
3. The connecting structure of the precast concrete parapet members according to claim 1 or 2, characterized in that a plurality of vertical through prepared holes are provided on the corbel of the precast concrete parapet member, and the positions of the vertical through prepared holes are aligned with vertical anchor bars pre-buried in the precast concrete composite beam or the precast concrete shear wall at the lower part; and two annular-hole hook-shaped reinforcing ribs are vertically arranged on each vertical through preformed hole, and the vertical through preformed holes are inserted into the vertical anchor bars and then filled with high-strength grouting material.
4. The precast concrete parapet member connection structure as claimed in claim 3, wherein the parapet wall body, the corbel and the parapet coping are cast in one step to form the precast reinforced concrete member.
5. The precast concrete parapet member connection structure as claimed in claim 3, wherein the section of the precast reinforced concrete member cast by the parapet wall body, the corbel and the parapet capping is a channel type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038287.0A CN106703306B (en) | 2017-01-19 | 2017-01-19 | Precast concrete parapet component and connection structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038287.0A CN106703306B (en) | 2017-01-19 | 2017-01-19 | Precast concrete parapet component and connection structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106703306A CN106703306A (en) | 2017-05-24 |
| CN106703306B true CN106703306B (en) | 2022-08-02 |
Family
ID=58906979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710038287.0A Active CN106703306B (en) | 2017-01-19 | 2017-01-19 | Precast concrete parapet component and connection structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703306B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951887B (en) * | 2018-05-28 | 2020-09-11 | 中建钢构有限公司 | Construction method of assembled type autoclaved lightweight concrete parapet joint |
| CN108756084A (en) * | 2018-07-27 | 2018-11-06 | 广东建星建造集团有限公司 | Assembled parapet and attaching method thereof |
| CN109707119A (en) * | 2018-11-25 | 2019-05-03 | 山东飞越钢结构工程有限公司 | A kind of connecting node in plane room and parapet |
| CN110468955B (en) * | 2019-08-19 | 2024-06-28 | 山东维石筑工科技有限公司 | Steel joint for connecting shear wall and superimposed sheet of fabricated concrete structure and construction method |
| CN114278018A (en) * | 2021-11-29 | 2022-04-05 | 中建八局第一建设有限公司 | L-shaped decoration integrated prefabricated parapet installation method |
| CN114809470A (en) * | 2022-03-04 | 2022-07-29 | 上海市城市建设设计研究总院（集团）有限公司 | Cantilever type prefabricated parapet connection structure |
| CN114525900A (en) * | 2022-03-07 | 2022-05-24 | 北京中建建筑设计院有限公司 | Energy-saving carbon-reducing heat-insulating bridge parapet and construction method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204023906U (en) * | 2014-07-03 | 2014-12-17 | 天津住宅集团建设工程总承包有限公司 | A kind of precast plate parapet roofing construction structure |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3005279A1 (en) * | 1980-02-13 | 1981-10-01 | Oskar 6620 Völklingen Adam | Insulating cladding unit for window breastwork - is prefabricated, with inward protruding sill support and insulation providing overall coverage |
| JP3361851B2 (en) * | 1993-07-09 | 2003-01-07 | 昭和電工株式会社 | How to build a parapet |
| JPH11293874A (en) * | 1998-04-13 | 1999-10-26 | Taisei Corp | Water stopping structure of double parapet |
| CN2522508Y (en) * | 2001-08-10 | 2002-11-27 | 陈国联 | Roof platform and parapet wall external and internal permanent water-proof, leakage-proof and ooze-proof innovative structure |
| CN201128980Y (en) * | 2007-11-29 | 2008-10-08 | 贵阳铝镁设计研究院 | V-shaped folded plate split eaves gutter |
| CN201771070U (en) * | 2010-09-09 | 2011-03-23 | 长春工程学院 | Externally hung wallboard connection part |
| RU2472906C1 (en) * | 2011-07-06 | 2013-01-20 | Закрытое акционерное общество "Казанский Гипронииавиапром" | Heat-saving abutment of insulated wall to insulated coating |
| CN104343214B (en) * | 2014-10-27 | 2017-01-18 | 广西建工集团联合建设有限公司 | Bracket prefabricated reinforcement framework of pseudo-classic building, fabrication method of reinforcement framework, and construction method of reinforced concrete bracket of pseudo-classic building |
| CN204252421U (en) * | 2014-11-21 | 2015-04-08 | 长沙远大住宅工业集团有限公司 | The syndeton of prefabricated superposed type parapet |
| CN204370617U (en) * | 2014-12-31 | 2015-06-03 | 长沙远大住宅工业集团有限公司 | Assembled architecture parapet prefabricating coping girder construction |
| CN204826308U (en) * | 2015-07-21 | 2015-12-02 | 重庆欧冠钢结构有限公司 | Structure assembly type structure is pieced together in advance to prefabricated shaped steel concrete shear force wall |
| CN205206162U (en) * | 2015-11-26 | 2016-05-04 | 文登蓝岛建筑工程有限公司 | Cornice structure |
| CN205259356U (en) * | 2015-12-04 | 2016-05-25 | 中国联合工程公司 | Gable face parapet post node of encorbelmenting |
| CN205604545U (en) * | 2016-01-20 | 2016-09-28 | 张波 | Connecting piece in exterior wall cladding antidetonation |
| CN206503311U (en) * | 2017-01-19 | 2017-09-19 | 香港华艺设计顾问(深圳)有限公司 | A kind of precast concrete daughter wall member and its attachment structure |
-
2017
- 2017-01-19 CN CN201710038287.0A patent/CN106703306B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204023906U (en) * | 2014-07-03 | 2014-12-17 | 天津住宅集团建设工程总承包有限公司 | A kind of precast plate parapet roofing construction structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106703306A (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106703306B (en) | Precast concrete parapet component and connection structure thereof | |
| CN106223360A (en) | Use the open cut cast in place and precast construction subway station construction method of stake supporting system | |
| CN103741604A (en) | Fully prefabricated reinforced concrete bridge assembly structure and connecting method for same | |
| CN103388357B (en) | Shatter-proof, prefabricated steel tube shear Temperature Variation In Buildings of Mixed Structures thing | |
| CN203475598U (en) | Shock-proof prefabricated building of steel bar truss shearing wall composite structure | |
| CN108005401A (en) | A kind of support and change method of the column of existing frame structure base isolation reinforcement | |
| CN203684108U (en) | Fully-precast assembly type reinforced concrete bridge assembling structure | |
| CN205712590U (en) | A kind of fabricated shear wall and the attachment structure of Prefabricated concrete-filled steel tube post | |
| CN114319977B (en) | Steel pipe concrete row column type connection precast shear wall structure and construction method | |
| KR101673287B1 (en) | Methods of increasing the sectional resisting force for negative moment acting at the end part of beam in case of repair or remodeling | |
| CN210685444U (en) | Quick leveling, mounting and supporting device for prefabricated external wall panel | |
| CN111734027A (en) | Foam steel floor slab with fixing structure and fixing method | |
| CN108104310B (en) | Assembled frame shear structure column staggered connection structure and assembling method | |
| CN112302209B (en) | Steel and concrete shear wall mixed structure and manufacturing method thereof | |
| CN112160247B (en) | Construction method of asynchronous hydraulic creeping formwork for hollow high pier of limited space pier group | |
| CN105649248A (en) | Fabricated prestressed concrete hollow slab and cast-in-place beam integrated construction method | |
| CN210529748U (en) | Subway station prefabricated rail top air duct and prefabricated middle plate connection node structure | |
| CN115262637B (en) | Subway station platform board assembled structure system | |
| CN103967332A (en) | Construction method of building site barrier | |
| CN215906997U (en) | Connecting structure of steel frame modular building foundation and prefabricated formwork bearing platform | |
| CN212053436U (en) | Strenghthened type precast concrete wallboard and connection structure with from structure of taking one's place | |
| CN211549324U (en) | Bearing wall rear opening door hole structure | |
| CN113565212A (en) | Connecting structure of steel frame modular building foundation and prefabricated formwork bearing platform | |
| CN113356405A (en) | Prefabricated composite wall structure based on embedded profile steel and construction method thereof | |
| CN203475599U (en) | Shock-proof prefabricated building of steel tube shearing wall composite structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |