CN113833308A - Garage back-jacking construction method and back-jacking structure - Google Patents
Garage back-jacking construction method and back-jacking structure Download PDFInfo
- Publication number
- CN113833308A CN113833308A CN202111207426.0A CN202111207426A CN113833308A CN 113833308 A CN113833308 A CN 113833308A CN 202111207426 A CN202111207426 A CN 202111207426A CN 113833308 A CN113833308 A CN 113833308A
- Authority
- CN
- China
- Prior art keywords
- steel
- jacking
- garage
- reverse
- structural
- 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.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/04—Propping of endangered or damaged buildings or building parts, e.g. with respect to air-raid action
-
- 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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
Abstract
The invention discloses a garage back-jacking construction method and a back-jacking structure, and belongs to the technical field of back-jacking construction. The technical scheme is as follows: a garage back construction method comprises the following steps: determining the load bearing distribution points of the top roof according to the construction condition; spanning a conversion steel beam between the structural beams corresponding to the load bearing distribution points; determining the sizes of a structural beam needing to be reinforced and a reverse top steel beam used for reinforcing the structural beam according to the erection condition of the conversion steel beam; in each layer of garage, a reverse top steel beam is additionally arranged on the bottom surface of a structural beam needing to be reinforced; and a reverse top steel pipe is vertically erected between the reverse top steel beam and the structural beam corresponding to the lower-layer top plate or between the reverse top steel beam and the foundation structure. The invention has the beneficial effects that: the garage back-jacking construction method provided by the invention has the advantages of convenience in construction, cost saving, simplicity, convenience, attractiveness and controllable stress system, and the garage back-jacking structure provided by the invention has the advantages of convenience in construction, simple structure, reasonable layout, convenience in subsequent disassembly and cost saving.
Description
Technical Field
The invention relates to the technical field of back-jacking construction, in particular to a garage back-jacking construction method and a back-jacking structure.
Background
In the building engineering, the construction site of a construction site is smaller and smaller, and the top plate of the constructed underground garage is always required to be piled, driven and constructed; because the design load of the construction garage can not meet the requirement of the construction load, the top plate of the underground garage needs to be supported by back jacking.
The garage back-jacking in the present stage is usually carried out through supporting the support body (steel pipe fastener support body, dish knot formula support body, wheel knot formula support body etc.), leads to the full hall to be the back-jacking, and this kind of back-jacking mode is extravagant manpower and materials, and the construction speed is slow, the construction is not convenient, the construction effect is not good, and whole atress system is uncontrollable.
How to solve the above technical problems is the subject of the present invention.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the garage back-jacking construction method which is convenient and fast to construct, cost-saving, simple, convenient, attractive and controllable in stress system, and simultaneously provides the garage back-jacking structure which is convenient and fast to construct, simple in structure, reasonable in layout, convenient to disassemble subsequently, cost-saving, capable of guaranteeing structural strength and capable of implementing normal construction of the top surface of the garage.
In order to achieve the aim, the invention provides a garage back construction method, which comprises the following steps:
step S1: analyzing and determining a plurality of load bearing distribution points of the top roof according to the construction condition on the top roof;
step S2: the conversion steel beams are arranged between the adjacent structural beams at the bearing load distribution points of the top roof in a spanning mode, and the load of the bearing load distribution points is transmitted to the corresponding structural beams, namely, the surface load of the top roof in the construction of stacking, traveling and the like is converted into the linear load of the conversion steel beams, so that the top roof with lower bearing capacity is prevented from bearing the load caused by the construction, and the top roof structure of the garage is ensured not to be disturbed;
step S3: according to the erection condition of the conversion steel beam, analyzing and determining the sizes of the structural beam needing to be reinforced and the reverse top steel beam used for reinforcing the structural beam so as to adapt to the change of the bearing capacity of the structural beam caused by the addition of the conversion steel beam;
step S4: in each layer of garage, the reverse top steel beam is horizontally additionally arranged on the bottom surface of the structural beam needing to be reinforced, which is determined in the step S3, and the reverse top steel beam is parallel to the structural beam, so that the structure is simple, the operation is easy, the construction is convenient and fast, and the manpower and material resources are saved;
step S5: and anti-top steel pipes are vertically erected between the anti-top steel beams and the structural beams corresponding to the lower-layer top plate or between the anti-top steel beams and the foundation structure, so that the span of the reinforced structural beams is reduced, and the stress transmission path of the structural beams is increased.
The method is used for garage back construction, the construction is convenient, the cost is saved, the method is simple, convenient and attractive, and the normal construction of the top surface of the garage is ensured while the top plate structure of the top layer of the garage is ensured not to be disturbed; meanwhile, before the construction of the method, the sizes of the converted steel beam, the reverse-jacking steel beam and the reverse-jacking steel pipe can be analyzed and calculated in advance, and the stress system is controllable.
The present invention is also specifically characterized in that the step S5 further includes: the steel plates are arranged between the structural beams and between the anti-jacking steel pipes and the foundation structure in a cushioning mode, the contact area is increased, the supporting effect is improved, and therefore the structural strength of the garage during jacking is further guaranteed.
The invention is also characterized in that the thickness of the steel plate is set to be 30-35 mm.
The steel pipe anti-jacking system is characterized in that the anti-jacking steel pipes are arranged along the perpendicular bisectors of the corresponding anti-jacking steel beams, so that the layout is reasonable, the construction is convenient and fast, the cost is saved, and the manpower and the material resources are saved.
The method is characterized in that the step S2 further comprises the steps of calculating and checking the size of the conversion steel beam, modeling through midagen, specifically, assuming the outer diameter and the thickness of the conversion steel beam, modeling and assembling a jig frame in midagen, enabling the bottom of the conversion steel beam to fall onto the structural beam through the conversion steel beam, filling a steel base plate with preset thickness between the conversion steel beam and the structural beam, determining whether the maximum bending moment shearing force transmitted to the structural beam exceeds the maximum bearing force of the concrete structural beam according to the values of the bending moment, the shearing force and the like in the calculation result, further checking whether the assumed outer diameter and the thickness of the conversion steel beam meet the construction requirements, and repeatedly checking to obtain the optimal outer diameter and the thickness of the conversion steel beam.
The method is characterized in that on the basis of calculating and checking the size of the conversion steel beam, the stress summary of each structural beam on the top roof is calculated, the size of the structural beam needing to be reinforced and the size of the reverse top steel beam used for reinforcing the structural beam are determined according to the stress summary, specifically, a calculation model is established according to the self weight D1 of the structural beam, the leg reaction force L1 and the conversion steel beam reaction force L2, 1.0D1+1.0L2 is used as a standard component, 1.3D1+1.5L1 is used as a basic combination, the structural beam needing to be reinforced is determined according to the mid-span bending moment value of the structural beam, the bending moment value at the support and the shear force value of the structural beam in the calculation result, and the outer diameter and the thickness of the reverse top steel beam used for reinforcing the structural beam are further calculated.
The invention is characterized in that the reverse top steel tube is made of Q345B, which is convenient for material selection.
The garage back-jacking structure prepared by the garage back-jacking construction method comprises a conversion steel beam which is arranged between two adjacent structural beams of a top roof in a crossing mode, wherein the conversion steel beam is parallel to the structural beams, the reverse jacking steel beam is arranged on the structural beam bottom surface, and the reverse jacking steel tube is vertically arranged between the reverse jacking steel beam bottom surface and a lower layer of roof and corresponds to the structural beam top surface or between the reverse jacking steel beam bottom surface and a foundation structure top surface.
The invention is characterized in that a steel plate is arranged between the bottom end of the reverse top steel pipe and the top surface of the corresponding structural beam or between the bottom end of the reverse top steel pipe and the foundation structure, so that the contact area is increased, the supporting effect is improved, and the structural strength of the garage for returning the top is further ensured.
The steel pipe anti-jacking system is characterized in that the anti-jacking steel pipes are arranged along the perpendicular bisectors of the corresponding anti-jacking steel beams, so that the layout is reasonable, the construction is convenient and fast, the cost is saved, and the manpower and the material resources are saved.
The invention has the beneficial effects that: the garage back construction method provided by the invention has the advantages of convenient construction, cost saving, simplicity, convenience and beauty, and can ensure that the construction of the top surface of the garage is normal while ensuring that the top layer roof structure of the garage is not disturbed; meanwhile, before the construction of the method, the sizes of the converted steel beam, the reverse-jacking steel beam and the reverse-jacking steel pipe can be analyzed and calculated in advance, and a stress system is controllable; the garage back-up structure provided by the invention is convenient to construct, simple in structure, reasonable in layout, convenient to disassemble subsequently, cost-saving, capable of implementing normal construction of the garage top surface while ensuring structural strength, and suitable for wide popularization and application.
Drawings
Fig. 1 is a schematic view of a back-up construction structure according to the present invention.
Wherein the reference numerals are: 1. converting the steel beam; 2. a structural beam; 3. a reverse top steel beam; 4. reversely jacking the steel pipe; 5. a steel plate; 6. a base structure; 7a, a top roof; 7b, a lower layer top plate.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Referring to fig. 1, an embodiment of the present invention provides a garage back construction method, including the following steps:
step S1: analyzing and determining a plurality of load bearing distribution points of the top roof 7a according to the construction condition of the top roof 7 a;
step S2: the conversion steel beam 1 is arranged between the adjacent structural beams 2 at the bearing load distribution points of the top roof 7a in a spanning manner, and the load of the bearing load distribution points is transmitted to the corresponding structural beams 2, namely, the surface load of the top roof 7a in the construction of stacking, traveling and the like is converted into the linear load of the conversion steel beam 1, so that the top roof 7a with lower bearing capacity is prevented from bearing the load caused by the construction, and the top roof structure of the garage is ensured not to be disturbed;
step S3: according to the erection condition of the conversion steel beam 1, the sizes of the structural beam 2 needing to be reinforced and the reverse-jacking steel beam 3 for reinforcing the structural beam 2 are analyzed and determined so as to adapt to the change of the bearing capacity of the structural beam 2 caused by the addition of the conversion steel beam 1;
step S4: in each layer of garage, the reverse top steel beam 3 is horizontally additionally arranged on the bottom surface of the structural beam 2 needing to be reinforced, which is determined in the step S3, and the reverse top steel beam 3 is parallel to the structural beam 2, so that the structure is simple, the operation is easy, the construction is convenient and fast, and the manpower and material resources are saved;
step S5: and the anti-top steel pipe 4 is vertically erected between the anti-top steel beam 3 and the structural beam 2 corresponding to the lower-layer top plate 7b or between the anti-top steel beam 3 and the foundation structure 6, so that the span of the reinforced structural beam 2 is reduced, and the stress transmission path of the structural beam 2 is increased.
The method is used for garage back construction, the construction is convenient, the cost is saved, the method is simple, convenient and attractive, and the normal construction of the top surface of the garage is ensured while the top plate structure of the top layer of the garage is ensured not to be disturbed; meanwhile, before the construction of the method, the sizes of the conversion steel beam 1, the reverse jacking steel beam 3 and the reverse jacking steel pipe 4 can be analyzed and calculated in advance, and the stress system is controllable.
The present invention is specifically characterized in that step S5 further includes: between the corresponding structural beam 2 of anti-steel pipe 4 and lower floor's roof 7b and between anti-steel pipe 4 and foundation structure 6, the pad establishes steel sheet 5, increases area of contact, improves the supporting effect to further guarantee the structural strength of garage back-pushing.
The invention is also characterized in that the thickness of the steel plate 5 is set to be 30-35 mm.
The invention has the specific characteristics that the reverse-jacking steel pipes 4 are arranged along the perpendicular bisectors of the corresponding reverse-jacking steel beams 3, the layout is reasonable, the construction is convenient, the cost is saved, and the manpower and the material resources are saved.
The method is characterized in that the step S2 further comprises the steps of calculating and checking the size of the conversion steel beam 1, modeling through midagen, specifically, assuming the outer diameter and the thickness of the conversion steel beam 1, modeling and assembling a jig frame in midagen, enabling the bottom to fall onto the structural beam through the conversion steel beam, padding a steel base plate with preset thickness between the conversion steel beam and the structural beam, determining whether the maximum bending moment shearing force transmitted to the structural beam exceeds the maximum bearing force of the concrete beam structure according to the values of the bending moment, the shearing force and the like in the calculation result, further checking whether the assumed outer diameter and the assumed thickness of the conversion steel beam 1 meet the construction requirements, and repeatedly checking to obtain the optimal outer diameter and the thickness of the conversion steel beam 1.
The method is characterized in that on the basis of calculating and checking the size of the converted steel beam 1, the stress summary of each structural beam 2 on the top roof 7a is calculated, the sizes of the structural beams 2 to be reinforced and the anti-top steel beam 3 for reinforcing the structural beams 2 are determined according to the stress summary, specifically, a calculation model is established according to the self weight D1 of the structural beams, the counterforce L1 of supporting legs and the counterforce L2 of the converted steel beam by taking 1.0D1+1.0L2 as standard components and 1.3D1+1.5L1 as basic combination, the structural beams 2 to be reinforced are determined according to the mid-span bending moment value of the structural beams, the bending moment value at the support and the shear force value of the structural beams in the calculation result, and the outer diameter and the thickness of the anti-top steel beam 3 for reinforcing the structural beams 2 are further calculated.
The invention is characterized in that the reverse-top steel tube 4 is made of Q345B, which is convenient for material selection.
Utilize garage back top structure of garage back top construction method preparation, including striding the conversion girder steel 1 of establishing between two adjacent structure roof beams 2 of top layer roof 7a, be on a parallel with structure roof beam 2, set up the anti-roof girder steel 3 on the 2 bottom surfaces of structure roof beam, and vertical setting between the structure roof beam 2 top surface that 3 bottom surfaces of anti-roof girder steel and lower floor's roof 7b correspond, or anti-steel pipe 4 that pushes up between 3 bottom surfaces of anti-roof girder steel and the 6 top surfaces of foundation structure, moreover, the steam generator is simple in structure, the construction is convenient, and save the cost, and is simple and convenient pleasing to the eye, when guaranteeing that the top layer roof structure of garage does not receive the disturbance, guarantee that the garage top surface is under construction normally.
The invention is characterized in that a steel plate 5 is arranged between the bottom end of the reverse-jacking steel pipe 4 and the top surface of the corresponding structural beam 2 or between the bottom end of the reverse-jacking steel pipe 4 and the foundation structure 6, so that the contact area is increased, the supporting effect is improved, and the structural strength of the garage during the back jacking is further ensured.
The invention has the specific characteristics that the reverse-jacking steel pipes 4 are arranged along the perpendicular bisectors of the corresponding reverse-jacking steel beams 3, the layout is reasonable, the construction is convenient, the cost is saved, and the manpower and the material resources are saved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The garage back construction method is characterized by comprising the following steps:
step S1: analyzing and determining a plurality of load bearing distribution points of the top roof (7 a) according to the construction condition of the top roof (7 a);
step S2: a conversion steel beam (1) is spanned between the adjacent structural beams (2) at the bearing load distribution point of the top roof (7 a);
step S3: according to the erection condition of the conversion steel beam (1), analyzing and determining the sizes of a structural beam (2) needing to be reinforced and a reverse top steel beam (3) used for reinforcing the structural beam (2);
step S4: in each layer of garage, horizontally adding the reverse top steel beam (3) on the bottom surface of the structural beam (2) needing to be reinforced, which is determined by the step S3;
step S5: and a reverse top steel pipe (4) is vertically erected between the reverse top steel beam (3) and the structural beam (2) corresponding to the lower-layer top plate (7 b) or between the reverse top steel beam (3) and the foundation structure (6).
2. The garage back construction method of claim 1, wherein the step S5 further comprises: and steel plates (5) are arranged between the reverse top steel pipe (4) and the structural beam (2) corresponding to the lower-layer top plate (7 b) and between the reverse top steel pipe (4) and the foundation structure (6) in a cushioning manner.
3. The garage back construction method according to claim 7, wherein the thickness of the steel plate (5) is set to 30-35 mm.
4. The garage back construction method according to claim 1 or 2, wherein the anti-jacking steel pipes (4) are arranged along the perpendicular bisectors of the corresponding anti-jacking steel beams (3).
5. The garage back construction method of claim 1, wherein the step S2 further comprises calculating and verifying the size of the conversion steel beam (1).
6. The garage back construction method according to claim 5, characterized in that on the basis of calculating and checking the dimensions of the conversion steel beam (1), the stress summary of each structural beam (2) on the top roof (7 a) is calculated, and the dimensions of the structural beam (2) to be reinforced and the anti-top steel beam (3) used for reinforcing the structural beam (2) are determined according to the stress summary.
7. The garage back construction method according to claim 1, wherein the reverse roof steel pipe (4) is made of Q345B.
8. The garage back-jacking structure prepared by the garage back-jacking construction method according to any one of claims 1 to 7, which comprises a conversion steel beam (1) spanning between two adjacent structural beams (2) of a top roof (7 a), a reverse jacking steel beam (3) parallel to the structural beams (2) and arranged on the bottom surface of the structural beams (2), and a reverse jacking steel pipe (4) vertically arranged between the bottom surface of the reverse jacking steel beam (3) and the top surface of the structural beam (2) corresponding to a lower roof (7 b) or between the bottom surface of the reverse jacking steel beam (3) and the top surface of a foundation structure (6).
9. The garage back structure of claim 8, wherein a steel plate (5) is arranged between the bottom end of the inverted top steel tube (4) and the top surface of the corresponding structural beam (2) or between the bottom end of the inverted top steel tube (4) and the foundation structure (6).
10. The garage backset structure of claim 8 or 9, wherein the backset steel pipes (4) are arranged along the perpendicular bisector of the corresponding backset steel beam (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111207426.0A CN113833308B (en) | 2021-10-18 | 2021-10-18 | Garage back-jacking construction method and back-jacking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111207426.0A CN113833308B (en) | 2021-10-18 | 2021-10-18 | Garage back-jacking construction method and back-jacking structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113833308A true CN113833308A (en) | 2021-12-24 |
| CN113833308B CN113833308B (en) | 2023-03-14 |
Family
ID=78965226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111207426.0A Active CN113833308B (en) | 2021-10-18 | 2021-10-18 | Garage back-jacking construction method and back-jacking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113833308B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264706A (en) * | 2014-10-22 | 2015-01-07 | 中建一局集团第二建筑有限公司 | Externally-use elevator girder foundation configuration and construction method thereof |
| JP2016089481A (en) * | 2014-11-05 | 2016-05-23 | 大成建設株式会社 | Extension method for underground facility |
| CN110093822A (en) * | 2019-06-05 | 2019-08-06 | 中国能源建设集团安徽省电力设计院有限公司 | A kind of traction engine for the defeated coal shallow embedding gallery in thermal power plant underground is current to cross over plate and its design method |
| CN211714007U (en) * | 2019-12-28 | 2020-10-20 | 山东天齐置业集团股份有限公司 | Construction elevator foundation structure |
| CN213203667U (en) * | 2020-07-02 | 2021-05-14 | 中建三局第一建设工程有限责任公司 | Supporting structure for post-cast strip-striding temporary lane of top plate of ground depot |
| CN113482394A (en) * | 2021-08-06 | 2021-10-08 | 中建三局集团(深圳)有限公司 | Structural beam plate back-jacking reinforcing method |
-
2021
- 2021-10-18 CN CN202111207426.0A patent/CN113833308B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264706A (en) * | 2014-10-22 | 2015-01-07 | 中建一局集团第二建筑有限公司 | Externally-use elevator girder foundation configuration and construction method thereof |
| JP2016089481A (en) * | 2014-11-05 | 2016-05-23 | 大成建設株式会社 | Extension method for underground facility |
| CN110093822A (en) * | 2019-06-05 | 2019-08-06 | 中国能源建设集团安徽省电力设计院有限公司 | A kind of traction engine for the defeated coal shallow embedding gallery in thermal power plant underground is current to cross over plate and its design method |
| CN211714007U (en) * | 2019-12-28 | 2020-10-20 | 山东天齐置业集团股份有限公司 | Construction elevator foundation structure |
| CN213203667U (en) * | 2020-07-02 | 2021-05-14 | 中建三局第一建设工程有限责任公司 | Supporting structure for post-cast strip-striding temporary lane of top plate of ground depot |
| CN113482394A (en) * | 2021-08-06 | 2021-10-08 | 中建三局集团(深圳)有限公司 | Structural beam plate back-jacking reinforcing method |
Non-Patent Citations (2)
| Title |
|---|
| 朱刚: "地下室顶板在上有压重时的加固措施及承载性能分析", 《建筑施工》 * |
| 鄢全科等: "泰国素万纳普机场大跨预应力楼板单立杆支撑回顶技术研究及应用", 《建筑施工》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113833308B (en) | 2023-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103147526B (en) | Strip-shaped grate concrete filled steel tube combined structure shear wall and preparation method thereof | |
| CN109914244B (en) | Weak bracket system suitable for high-tower reinforced concrete combined beam steel structure installation and bottom and top plate concrete pouring and operation method thereof | |
| CN111395532A (en) | Installation and construction method for large-span half-opening elliptical spherical reticulated shell | |
| CN102425237A (en) | On-site assembling type extending arm combined node | |
| CN102140850B (en) | Frame with floors of composite grid structure and construction method thereof | |
| CN108222480B (en) | High-altitude cantilever main truss type steel formwork construction platform | |
| CN203034799U (en) | Tower hoist standard knot bearing overhead support formwork steel platform structure | |
| CN203334423U (en) | Rebar joint structure of prefabricated stacked balcony slab and main body | |
| CN113833308B (en) | Garage back-jacking construction method and back-jacking structure | |
| CN112376689A (en) | Prefabricated wallboard of assembled and precast beam | |
| CN207553644U (en) | A kind of rc-frame-beam column reinforcing joint | |
| CN215594498U (en) | Wall surface shear-resistant module for cluster low-rise steel structure | |
| CN216042835U (en) | Layer adding device with light wall board for raising frame structure | |
| CN212562432U (en) | Connecting device of automatic lifting scaffold | |
| CN215331674U (en) | Interim bearing structure of steel bar truss building carrier plate | |
| CN101514573B (en) | Floor support plate | |
| CN210288825U (en) | Assembled and cast-in-situ combined beam plate structure | |
| CN106759885A (en) | Cold formed steel structure house inner wall structural system | |
| CN201679227U (en) | Template-supporting device of cast-in-place concrete floor slab of box-shaped beam with steel frame structure | |
| CN112853855A (en) | Portable conversion device for steel structure storage yard and assembled field overhead | |
| CN212801953U (en) | Steel construction is assembled atress and is converted bed-jig device | |
| CN211143498U (en) | Steel structure column base node capable of transversely transferring force | |
| CN213979281U (en) | Prefabricated wallboard of assembled and precast beam | |
| CN213296643U (en) | Truss | |
| CN208718086U (en) | Double housing supports node connecting structures |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |