CN114737604A - Super-large underground space-spanning H-shaped steel reinforced concrete top cover frame system under heavy load - Google Patents
Super-large underground space-spanning H-shaped steel reinforced concrete top cover frame system under heavy load Download PDFInfo
- Publication number
- CN114737604A CN114737604A CN202210330017.8A CN202210330017A CN114737604A CN 114737604 A CN114737604 A CN 114737604A CN 202210330017 A CN202210330017 A CN 202210330017A CN 114737604 A CN114737604 A CN 114737604A
- Authority
- CN
- China
- Prior art keywords
- shaped steel
- steel
- section steel
- prestressed
- shaped
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 298
- 239000010959 steel Substances 0.000 title claims abstract description 298
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 30
- 239000004567 concrete Substances 0.000 claims abstract description 65
- 210000002435 tendon Anatomy 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims description 37
- 230000002787 reinforcement Effects 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 9
- 239000011083 cement mortar Substances 0.000 claims description 5
- 210000003205 muscle Anatomy 0.000 claims description 4
- 239000011513 prestressed concrete Substances 0.000 abstract description 3
- 229910000746 Structural steel Inorganic materials 0.000 abstract 2
- 238000000034 method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000011372 high-strength concrete Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- 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
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention relates to the field of underground engineering, in particular to an I-shaped steel concrete top cover frame system with an oversized underground span under heavy load, which comprises a prestressed I-shaped steel concrete slab, a shaped steel concrete beam and a shaped steel concrete column; the steel reinforced concrete column is internally provided with column section steel which is vertically arranged, and a section steel bracket is fixed at the top of the column section steel; the beam section steel is longitudinally arranged in the section steel concrete beam, and two ends of the beam section steel are respectively connected with the section steel corbels on two sides of the beam section steel; a plurality of I-shaped steel beams are arranged in the prestressed I-shaped steel concrete slab at intervals along the longitudinal direction, and two ends of each I-shaped steel beam are connected with column-shaped steel beams, section-shaped steel corbels or beam-shaped steel beams on two sides of the I-shaped steel beam respectively. The invention adopts the combination of the structural steel system and the prestressed tendon structural system to form a novel frame system under the condition of meeting the heavy load and large span, and effectively combines the characteristics of high bearing capacity, large rigidity and light dead weight of the structural steel concrete structure and the characteristics of good crack resistance and deformation resistance of the prestressed concrete structure.
Description
Technical Field
The invention relates to the technical field of underground engineering, in particular to an I-shaped steel concrete top cover frame system with a super large span underground space under heavy load, which can be used in structural engineering such as underground structures of rail transit engineering, basements and the like.
Background
Along with the development of urban underground construction, the demand of underground super-large span space structures is increasingly increased, and meanwhile, the design and construction of the super-large span underground space structures are difficult due to higher load on the upper parts of the structures. The common structural form in the current engineering, such as a close-packed rib beam structure, can reduce the use height of the structure, the construction is more complex, and the crack width in the midspan and the support is difficult to control; the folded plate and the arched structure can cause larger horizontal force, and the design requirements of the connecting node and the lateral force resisting component are improved; the Y-shaped column structure has limitations on the structure clearance and the use function.
Therefore, it is necessary to design an ultra-large span underground space i-shaped steel concrete top cover frame system under heavy load to overcome the above problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an I-shaped steel concrete roof frame system with a super-large span underground space under heavy load, which effectively combines the characteristics of high bearing capacity, high rigidity and light dead weight of a steel concrete structure and the characteristics of good crack resistance and deformation resistance of a prestressed concrete structure, thereby improving the integral bearing capacity, strength, rigidity and integrity of the underground building structure system, and being suitable for underground engineering with large span, heavy load, strict requirements on section size, requirements on use height and the like.
In order to achieve the purpose, the technical scheme of the invention is that the I-shaped steel concrete top cover frame system with the super large span underground space under heavy load comprises a prestressed I-shaped steel concrete slab, a shaped steel concrete beam and a shaped steel concrete column; the steel reinforced concrete column is internally provided with column section steel which is vertically arranged, and a section steel bracket is fixed at the top of the column section steel; the beam section steel is longitudinally arranged in the section steel concrete beam, and two ends of the beam section steel are respectively connected with the section steel corbels on the section steel concrete columns on two sides of the beam section steel; the prestressed I-shaped steel concrete slab is characterized in that a plurality of I-shaped steel arranged at intervals along the longitudinal direction are arranged in the prestressed I-shaped steel concrete slab, one part of the I-shaped steel is arranged at two ends of the I-shaped steel and connected with the column-shaped steel at two sides of the I-shaped steel respectively, one part of the I-shaped steel is arranged at two ends of the I-shaped steel and connected with the bracket of the section steel at two sides of the I-shaped steel respectively, and the other part of the I-shaped steel is arranged at two ends of the I-shaped steel and connected with the beam-shaped steel at two sides of the I-shaped steel respectively.
Furthermore, the top of the column section steel and the position where the bracket of the section steel is connected are also connected with two inner partition plates of the section steel which are parallel up and down, and the end part of the I-shaped steel is positioned between the two inner partition plates of the section steel.
Furthermore, the two ends of the I-shaped steel are respectively connected with a section steel connecting piece through high-strength bolts, and the two ends of the I-shaped steel are respectively connected with the column section steel, the section steel bracket or the beam section steel through the section steel connecting pieces.
Furthermore, corrugated pipes are arranged between adjacent I-shaped steels in the prestressed I-shaped steel concrete slab, bonding prestressed ribs are arranged in the corrugated pipes through post-tensioning, the bonding prestressed ribs are arranged in a curve shape, and cement mortar is poured into the corrugated pipes.
Furthermore, the bonded prestressed tendons at the midspan are positioned at the lower part of the prestressed I-shaped steel concrete plate, the bonded prestressed tendons at the main beam support are positioned above the corresponding beam-shaped steel, and the bonded prestressed tendons at the side span extend to the center of the edge beam, penetrate through the corresponding web of the beam-shaped steel and are anchored.
Furthermore, a plurality of corrugated pipes are arranged between the adjacent I-shaped steel at intervals along the longitudinal direction, and a plurality of bonded prestressed ribs are arranged in each corrugated pipe in a stretching mode.
Furthermore, stirrup reinforcement cages which are arranged transversely are arranged between the adjacent I-shaped steels in the prestressed I-shaped steel concrete slab; the bonded prestressed tendons transversely penetrate through the stirrup reinforcement cage between the corresponding I-shaped steel.
Furthermore, a plate top reinforcing mesh and a plate bottom reinforcing mesh are further arranged in the prestressed I-shaped steel concrete plate, the plate top reinforcing mesh is located above the I-shaped steel and connected with the top of the stirrup reinforcing cage, and the plate bottom reinforcing mesh is located below the I-shaped steel and connected with the bottom of the stirrup reinforcing cage.
Furthermore, a main beam top reinforcing mesh, a main beam bottom reinforcing mesh and a plurality of main beam stirrups which are longitudinally arranged at intervals are also arranged in the steel reinforced concrete beam; the beam section steel longitudinally penetrates through each main beam stirrup, the main beam top reinforcing mesh is positioned above the beam section steel and connected with the top of each main beam stirrup, and the main beam bottom reinforcing mesh is positioned below the beam section steel and connected with the bottom of each main beam stirrup.
Further, still be provided with in the shaped steel concrete column along vertical interval arrangement's a plurality of post stirrups and indulge the muscle along a plurality of posts of vertical arrangement, post shaped steel is along vertical through each post stirrup, and a plurality of posts are indulged the muscle and are followed the circumference interval arrangement of post shaped steel and all with each post stirrup is connected.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, under the conditions of heavy load and large span, a profiled steel structure system and a prestressed tendon structure system are combined to form a novel frame system, the characteristics of high bearing capacity, high rigidity and light dead weight of a profiled steel concrete structure and the characteristics of good crack resistance and deformation resistance of a prestressed concrete structure are effectively combined, the integral bearing capacity, strength, rigidity and integrity of the underground building structure system can be effectively improved, and the problems of large span requirement, section size requirement and earthquake resistance requirement of the structure under the action of heavy load are solved;
(2) the main body bending-resistant component adopts the I-shaped steel, not only utilizes the characteristics of high strength and high rigidity of the steel reinforced concrete structure, but also lightens the dead weight of the plate body and saves steel;
(3) the I-shaped steel concrete top cover frame system with the super-large span underground space under heavy load has the advantages of simple structure, convenience and quickness in construction, clear force transmission path, wide application range and the like, and has wide application prospect in the engineering field with strict requirements on heavy load, large span and section size.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of an I-shaped steel reinforced concrete roof frame system with a super-large span underground space under heavy load according to an embodiment of the invention;
FIG. 2 is a schematic view of a steel skeleton of an I-shaped steel reinforced concrete roof frame system with a super large span underground space under heavy load according to an embodiment of the invention;
fig. 3 is a schematic view of a reinforcement cage with bonded tendons and stirrups according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a prestressed I-steel concrete slab according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a section steel connection between a section steel concrete beam and a section steel concrete column according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of the connection of the steel sections of a prestressed I-shaped steel concrete slab and a steel reinforced concrete beam according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of a prestressed i-steel concrete slab at a main beam support provided by an embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of a prestressed i-steel concrete slab at a midspan provided by an embodiment of the present invention;
FIG. 9 is a schematic view of a cross-sectional view A-A of a steel reinforced concrete beam according to an embodiment of the present invention;
FIG. 10 is a schematic structural view of a section B-B of a steel reinforced concrete column according to an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view of a bellows according to an embodiment of the present invention;
in the figure: 1. prestressed I-shaped steel concrete slabs; 2. a steel reinforced concrete beam; 3. a steel concrete column; 4. h-shaped steel; 5. beam section steel; 6. column section steel; 7. a section steel connecting piece; 8. a bellows; 9. a stirrup reinforcement cage; 10. plate top reinforcing mesh; 11. a mat bottom reinforcing mesh; 12. a section steel corbel; 13. a profiled bar inner partition plate; 14. a high-strength bolt; 15. a main beam top reinforcing mesh; 16. a main beam bottom reinforcing mesh; 17. a main beam stirrup; 18. a column longitudinal bar; 19. a column stirrup; 20. the bonded prestressed tendon is arranged; 21. and (3) cement mortar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a number" means two or more unless otherwise specified.
As shown in fig. 1 to 6, the present embodiment provides an i-shaped steel concrete roof frame system with a super large span underground space under a heavy load, which includes a prestressed i-shaped steel concrete slab 1, a shaped steel concrete beam 2 and a shaped steel concrete column 3; the steel reinforced concrete column 3 is internally provided with column section steel 6 which is vertically arranged, and a section steel corbel 12 is fixed at the top of the column section steel 6; the beam section steel 5 is arranged in the section steel concrete beam 2 along the longitudinal direction, and two ends of the beam section steel 5 are respectively connected with the section steel corbels 12 on the section steel concrete columns 3 on two sides of the beam section steel 5; be provided with in the prestressing force I-shaped steel concrete slab 1 along a plurality of I-shaped steel 4 of longitudinal separation arrangement, one of them part the both ends of I-shaped steel 4 are rather than both sides respectively the post shaped steel 6 is connected, one of them part the both ends of I-shaped steel 4 are rather than both sides respectively the shaped steel bracket 12 is connected, another part the both ends of I-shaped steel 4 are rather than both sides respectively the beam-type steel 5 is connected. Under the condition of meeting heavy load and large span, the frame system of the embodiment combines a profiled steel structure system and a prestressed tendon structure system to form a novel combined structure form, can effectively improve the integral bearing capacity, strength, rigidity and integrity of an underground building structure system, and meets the requirements of large span, heavy load, strict requirements on section size, use height and the like of the structure; meanwhile, the main body bending-resistant component is made of the I-shaped steel, so that the characteristic of high strength and high rigidity of the steel reinforced concrete structure is utilized, the dead weight of the plate body is reduced, and steel is saved.
The frame top cover, the frame beam and the frame column of the frame system of the embodiment are all of a steel reinforced concrete structure, and the whole frame is large in size, so that a cast-in-place concrete process is adopted, and a post-tensioning method is adopted for a pre-stressing process to form bonded pre-stressing tendons, so that the frame system is good in integrity and continuity.
As shown in fig. 5 and 6, the column section steel 6, the section steel corbel 12 and the beam section steel 5 in this embodiment may all be i-shaped steel, the upper flange plate, the web plate and the lower flange plate of the section steel corbel 12 are respectively opposite to the upper flange plate, the web plate and the lower flange plate of the beam section steel 5, and the section steel corbel 12 and the beam section steel 5 are welded into a whole by a full-section welding method.
Furthermore, the position where the top of the column section steel 6 is connected with the section steel bracket 12 is also connected with two section steel inner partition plates 13 which are parallel up and down, and the end part of the I-shaped steel 4 is positioned between the two section steel inner partition plates 13. As shown in fig. 2 and 5, two section steel inner partition plates 13 are welded to one side of the column steel 6 for connecting the i-shaped steel 4, the positions of the two section steel inner partition plates 13 correspond to the upper and lower flange plates of the section steel corbel 12, and the upper and lower flange plates and the web plate of the i-shaped steel 4 are welded to the column steel 6.
Further, the two ends of the I-shaped steel 4 are connected with section steel connecting pieces 7 through high-strength bolts 14 respectively, and the two ends of the I-shaped steel 4 are connected with the column section steel 6, the section steel corbel 12 or the beam section steel 5 through the section steel connecting pieces 7 respectively. As shown in fig. 6, the i-shaped steels 4 in this embodiment are arranged transversely and parallelly at intervals along the underground structure, the web plates at the two ends of the i-shaped steel 4 are connected with the section steel connecting members 7 through high-strength bolts 14, and the flange plates at the two ends of the i-shaped steel 4 and the section steel connecting members 7 are connected with corresponding column-shaped steels 6, section steel corbels 12 or beam-shaped steels 5 through a welding process.
Furthermore, corrugated pipes 8 are arranged between adjacent I-shaped steels 4 in the prestressed I-shaped steel concrete slab 1, bonding prestressed tendons 20 are arranged in the corrugated pipes 8 through post-tensioning, the bonding prestressed tendons 20 are arranged in a curve shape, and cement mortar 21 is poured into the corrugated pipes 8. As shown in fig. 4 and fig. 7 to 8, in the embodiment, the curved bonded prestressed tendons 20 are arranged between the adjacent i-shaped steels 4 by post-tensioning, so that the bearing capacity of the i-shaped steels 4 can be fully exerted, the stress concentration phenomenon is prevented, and the occurrence and development of cracks can be effectively prevented.
Furthermore, the bonded prestressed tendons 20 at the midspan are located at the lower part of the prestressed i-shaped steel concrete slab 1, the bonded prestressed tendons 20 at the main beam support are located above the corresponding beam-shaped steel 5, and the bonded prestressed tendons 20 at the side span extend to the side beam centroid and penetrate through the web of the corresponding beam-shaped steel 5 and are anchored. As shown in fig. 3, the bonded tendon 20 of the present embodiment is arranged in a three-span frame in a curved form, the mid-span is in a parabolic form, the inflection point is located at a position close to the support by 0.1 times of the span, the bonded tendon 20 at the main beam support is arranged above the upper flange plate of the beam-shaped steel 5, thereby avoiding the beam-shaped steel 5 from being perforated, and the bonded tendon 20 at the side span extends to the side beam centroid, passes through the web of the beam-shaped steel 5, and is anchored by an anchorage.
Furthermore, a plurality of corrugated pipes 8 are arranged between adjacent i-shaped steel 4 at intervals along the longitudinal direction, and a plurality of bonded prestressed tendons 20 are arranged in each corrugated pipe 8 in a stretching manner. As shown in fig. 7-8, a plurality of corrugated pipes 8 are arranged between adjacent i-shaped steel 4 at intervals in parallel, and the specific number can be determined according to actual conditions; as shown in fig. 11, the number of the bonded prestressed tendons 20 in each corrugated pipe 8 can be determined according to actual conditions, and a plurality of bonded prestressed tendons 20 form a tendon together, so that the crack resistance of the top plate is improved.
When the prestressed I-shaped steel concrete slab 1 is constructed, the metal corrugated pipe 8 is pre-buried and fixed at a preset position in the prestressed I-shaped steel concrete slab 1 through the erection ribs and the like, and is arranged between the adjacent I-shaped steel 4, after the stress components in the slab are placed, the high-strength concrete is poured, after the maintenance is finished, the bonded prestressed ribs 20 penetrate the corrugated pipe 8, then the bonded prestressed ribs 20 are stretched, the two ends of the bonded prestressed ribs 20 are respectively anchored on the beam-shaped steel 5 of the side beam through the anchorage devices, and finally cement mortar 21 and end sockets are poured into the corrugated pipe 8.
Furthermore, stirrup reinforcement cages 9 which are arranged along the transverse direction are arranged between the adjacent I-shaped steels 4 in the prestressed I-shaped steel concrete slab 1; the bonded prestressed tendons 20 transversely penetrate through the stirrup reinforcement cage 9 between the corresponding I-shaped steel 4.
Furthermore, a slab-top steel mesh 10 and a slab-bottom steel mesh 11 are further disposed in the prestressed i-steel concrete slab 1, the slab-top steel mesh 10 is located above the i-steel 4 and connected to the top of the stirrup cage 9, and the slab-bottom steel mesh 11 is located below the i-steel 4 and connected to the bottom of the stirrup cage 9. The plate top reinforcing mesh 10 and the plate bottom reinforcing mesh 11 are respectively arranged above the upper flange and below the lower flange of the I-shaped steel 4 and respectively comprise a plurality of distributed reinforcing bars and a plurality of stressed reinforcing bars which are intersected vertically and horizontally, the stressed reinforcing bars and the distributed reinforcing bars at the plate top and the plate bottom are respectively combined into the reinforcing mesh and are bound into a whole through the stirrup reinforcing cage 9 between the I-shaped steel 4; in the construction process, the reinforcing mesh is connected with the steel bars in the steel reinforced concrete beam 2 and the steel reinforced concrete column 3.
Furthermore, a main beam top reinforcing mesh 15, a main beam bottom reinforcing mesh 16 and a plurality of main beam stirrups 17 which are arranged at intervals along the longitudinal direction are also arranged in the steel reinforced concrete beam 2; the beam section steel 5 longitudinally penetrates through each main beam stirrup 17, the main beam top reinforcing mesh 15 is positioned above the beam section steel 5 and connected with the top of each main beam stirrup 17, and the main beam bottom reinforcing mesh 16 is positioned below the beam section steel 5 and connected with the bottom of each main beam stirrup 17. As shown in fig. 9, the girder hoop 17 and the steel mesh in the steel reinforced concrete girder 2 of this embodiment are designed according to the specifications, and the girder section steel 5 is connected to the section steel corbel 12 on the column section steel 6 by a welding process, and the girder hoop 17, the girder top steel mesh 15 and the girder bottom steel mesh 16 are connected to form a girder steel cage and are integrally connected to the steel bars and the steel meshes of the prestressed i-steel concrete slab 1.
Further, still be provided with in shaped steel concrete column 3 along vertical interval arrangement's a plurality of post stirrup 19 and along vertical arrangement a plurality of post longitudinal bar 18, post shaped steel 6 is along vertical each of running through post stirrup 19, a plurality of posts longitudinal bar 18 are followed the circumference interval arrangement of post shaped steel 6 and all with each post stirrup 19 is connected. As shown in fig. 10, the column stirrup 19 and the column longitudinal bar 18 in the steel concrete column 3 of the present embodiment are both designed according to the specification, and the column stirrup 19 and the column longitudinal bar 18 are connected to form a column reinforcement cage and are connected to form a whole with a beam reinforcement cage in an overlapping manner.
Optimally, a plurality of shear-resistant studs can be symmetrically welded on the top surfaces at two ends of the upper flange plate and the bottom surfaces at two ends of the lower flange plate of the I-shaped steel 4, and the shear-resistant studs are embedded into the high-strength concrete, so that the I-shaped steel 4 and the high-strength concrete have stable adhesive force and shear resistance.
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 utility model provides an underground space I-shaped steel reinforced concrete top cap frame system is striden to super large under heavy load which characterized in that: the prestressed steel concrete beam comprises a prestressed I-shaped steel concrete plate, a steel concrete beam and a steel concrete column; the steel reinforced concrete column is internally provided with column section steel which is vertically arranged, and a section steel bracket is fixed at the top of the column section steel; the beam section steel is longitudinally arranged in the section steel concrete beam, and two ends of the beam section steel are respectively connected with the section steel corbels on the section steel concrete columns on two sides of the beam section steel; the prestressed I-shaped steel concrete slab is characterized in that a plurality of I-shaped steel arranged at intervals along the longitudinal direction are arranged in the prestressed I-shaped steel concrete slab, one part of the I-shaped steel is arranged at two ends of the I-shaped steel and connected with the column-shaped steel at two sides of the I-shaped steel respectively, one part of the I-shaped steel is arranged at two ends of the I-shaped steel and connected with the bracket of the section steel at two sides of the I-shaped steel respectively, and the other part of the I-shaped steel is arranged at two ends of the I-shaped steel and connected with the beam-shaped steel at two sides of the I-shaped steel respectively.
2. The I-shaped steel reinforced concrete roof frame system with the ultra-large span underground space under the heavy load of claim 1, wherein: the top of the column section steel and the position of the section steel bracket are connected are also connected with two section steel inner partition plates which are parallel up and down, and the end part of the I-shaped section steel is positioned between the two section steel inner partition plates.
3. The I-shaped steel reinforced concrete roof frame system with the ultra-large span underground space under the heavy load of claim 1, wherein: the two ends of the I-shaped steel are respectively connected with a section steel connecting piece through high-strength bolts, and the two ends of the I-shaped steel are respectively connected with the column section steel, the section steel bracket or the beam section steel through the section steel connecting pieces.
4. The I-shaped steel reinforced concrete roof frame system with the ultra-large span underground space under the heavy load of claim 1, wherein: corrugated pipes are arranged between the adjacent I-shaped steels in the prestressed I-shaped steel concrete slab, bonding prestressed tendons are arranged in the corrugated pipes through post-tensioning, the bonding prestressed tendons are arranged in a curved shape, and cement mortar is poured into the corrugated pipes.
5. The I-shaped steel reinforced concrete roof frame system with the ultra-large span underground space under the heavy load of claim 4, wherein: the bonded prestressed tendons at the midspan are positioned at the lower part of the prestressed I-shaped steel concrete slab, the bonded prestressed tendons at the main beam support are positioned above the corresponding beam-shaped steel, and the bonded prestressed tendons at the side span extend to the center of the edge beam and penetrate through the corresponding web of the beam-shaped steel and are anchored.
6. The I-shaped steel reinforced concrete roof frame system with the ultra-large span underground space under the heavy load of claim 4, wherein: and a plurality of corrugated pipes are arranged between the adjacent I-shaped steel at intervals along the longitudinal direction, and a plurality of bonding prestressed ribs are arranged in each corrugated pipe in a stretching mode.
7. The I-shaped steel reinforced concrete roof frame system with the ultra-large span underground space under the heavy load of claim 4, wherein: hooping reinforcement cages which are transversely arranged are arranged between the adjacent I-shaped steels in the prestressed I-shaped steel concrete slab; the bonded prestressed tendons transversely penetrate through the stirrup reinforcement cage between the corresponding I-shaped steel.
8. The I-shaped steel reinforced concrete roof frame system with the ultra-large span underground space under the heavy load of claim 7, wherein: the prestressed I-shaped steel concrete slab is further provided with a slab top reinforcing mesh and a slab bottom reinforcing mesh, the slab top reinforcing mesh is located above the I-shaped steel and connected with the top of the stirrup reinforcing cage, and the slab bottom reinforcing mesh is located below the I-shaped steel and connected with the bottom of the stirrup reinforcing cage.
9. The I-shaped steel reinforced concrete roof frame system with the ultra-large span underground space under the heavy load of claim 1, wherein: the steel reinforced concrete beam is also internally provided with a main beam top reinforcing mesh, a main beam bottom reinforcing mesh and a plurality of main beam stirrups which are longitudinally arranged at intervals; the beam section steel longitudinally penetrates through each main beam stirrup, the main beam top reinforcing mesh is positioned above the beam section steel and connected with the top of each main beam stirrup, and the main beam bottom reinforcing mesh is positioned below the beam section steel and connected with the bottom of each main beam stirrup.
10. The I-shaped steel reinforced concrete roof frame system with the ultra-large span underground space under the heavy load of claim 1, wherein: still be provided with in the shaped steel concrete column along vertical interval arrangement's a plurality of post stirrups and indulge the muscle along vertical a plurality of posts of arranging, post shaped steel is along vertical each of running through post stirrup, a plurality of posts indulge the muscle along the circumference interval arrangement of post shaped steel and all with each post stirrup is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210330017.8A CN114737604B (en) | 2022-03-31 | 2022-03-31 | I-shaped steel concrete top cover frame system of extra-large span underground space under heavy load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210330017.8A CN114737604B (en) | 2022-03-31 | 2022-03-31 | I-shaped steel concrete top cover frame system of extra-large span underground space under heavy load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114737604A true CN114737604A (en) | 2022-07-12 |
| CN114737604B CN114737604B (en) | 2023-12-01 |
Family
ID=82280028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210330017.8A Active CN114737604B (en) | 2022-03-31 | 2022-03-31 | I-shaped steel concrete top cover frame system of extra-large span underground space under heavy load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114737604B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59185232A (en) * | 1983-04-05 | 1984-10-20 | Taisei Corp | Construction work of underground structure using sheathing frame |
| CN103410329A (en) * | 2013-08-30 | 2013-11-27 | 南通八建集团有限公司 | Large-span basement concrete roof structure flat tube bonded prestressing force construction method |
| CN208396036U (en) * | 2018-07-07 | 2019-01-18 | 厦门中建东北设计院有限公司 | A kind of connecting node of profile steel concrete column and reinforced beam |
| CN109779012A (en) * | 2019-01-31 | 2019-05-21 | 中铁第四勘察设计院集团有限公司 | A kind of reinforced beam and concrete filled steel tube column connected node |
| CN110983968A (en) * | 2019-12-30 | 2020-04-10 | 扬州大学 | Prefabricated assembled FRP (fiber reinforced plastic) -section steel-concrete combined bridge deck and construction method thereof |
| CN112411767A (en) * | 2020-11-30 | 2021-02-26 | 国网安徽省电力有限公司经济技术研究院 | Beam-column joint for prefabricated assembly type PEC structure system and preparation method |
| CN113062476A (en) * | 2021-06-03 | 2021-07-02 | 中国船舶重工集团国际工程有限公司 | Heavy-load large-span combined beam-column structure and construction method |
-
2022
- 2022-03-31 CN CN202210330017.8A patent/CN114737604B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59185232A (en) * | 1983-04-05 | 1984-10-20 | Taisei Corp | Construction work of underground structure using sheathing frame |
| CN103410329A (en) * | 2013-08-30 | 2013-11-27 | 南通八建集团有限公司 | Large-span basement concrete roof structure flat tube bonded prestressing force construction method |
| CN208396036U (en) * | 2018-07-07 | 2019-01-18 | 厦门中建东北设计院有限公司 | A kind of connecting node of profile steel concrete column and reinforced beam |
| CN109779012A (en) * | 2019-01-31 | 2019-05-21 | 中铁第四勘察设计院集团有限公司 | A kind of reinforced beam and concrete filled steel tube column connected node |
| CN110983968A (en) * | 2019-12-30 | 2020-04-10 | 扬州大学 | Prefabricated assembled FRP (fiber reinforced plastic) -section steel-concrete combined bridge deck and construction method thereof |
| CN112411767A (en) * | 2020-11-30 | 2021-02-26 | 国网安徽省电力有限公司经济技术研究院 | Beam-column joint for prefabricated assembly type PEC structure system and preparation method |
| CN113062476A (en) * | 2021-06-03 | 2021-07-02 | 中国船舶重工集团国际工程有限公司 | Heavy-load large-span combined beam-column structure and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114737604B (en) | 2023-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111411721A (en) | Assembly type prefabricated floor slab secondary beam combined component | |
| CN203639804U (en) | Continuous rigid frame bridge based on steel truss and concrete slab composite beam | |
| CN110886217B (en) | Precast prestressed concrete anchor beam structure for anchoring stay cable and bridge tower | |
| CN106948486A (en) | Steel tubes Combined concrete frame system and construction method | |
| CN111424869A (en) | Concrete floor secondary beam combined prefabricated part and manufacturing method | |
| CN203383137U (en) | Transversely assembled corrugated steel web combined box girder | |
| CN217027617U (en) | FRP (fiber reinforced Plastic) mixed reinforced concrete shear wall with replaceable wall foot component | |
| CN215484069U (en) | Steel pipe concrete truss prestressing force superposed beam | |
| CN114737604B (en) | I-shaped steel concrete top cover frame system of extra-large span underground space under heavy load | |
| CN114737605B (en) | Box-type steel concrete top cover and frame system for oversized underground space under heavy load | |
| CN212453333U (en) | Assembled combination beam and beam slab node | |
| CN114182620A (en) | Partial cable-stayed bridge structure system of large cantilever core steel box and construction method | |
| CN114809072B (en) | Underground space prestress steel reinforced concrete top cover under oversized span heavy load | |
| CN211396107U (en) | Assembled shear force wall with steel sheet stud combination formula bracing | |
| CN113802450A (en) | Steel concrete composite beam structure and construction method | |
| CN210067063U (en) | Connecting structure of side column or center column and beam for fabricated frame structure building | |
| CN112854596A (en) | Combined beam with perforated steel plate connecting piece and split stud connecting piece and construction method | |
| CN112282207A (en) | Combined beam, spliced beam and subway station | |
| CN112144660A (en) | Herringbone stiff column base structure and construction method thereof | |
| CN112324051A (en) | Steel pipe concrete truss prestressing force superposed beam | |
| CN215888962U (en) | Thin-bottom groove type prestressed concrete superposed beam | |
| CN215484061U (en) | Combined beam, spliced beam and subway station | |
| CN216893067U (en) | Assembled composite floor system | |
| CN212866605U (en) | Beam-end node | |
| CN220451086U (en) | Post-tensioned unbonded co-tensioned precast prestressed concrete open-pore beam frame structure system connected by UHPC (ultra high pressure polyethylene) |
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 |