CN110107006B - Large-span composite structure floor system - Google Patents
Large-span composite structure floor system Download PDFInfo
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- CN110107006B CN110107006B CN201910368019.4A CN201910368019A CN110107006B CN 110107006 B CN110107006 B CN 110107006B CN 201910368019 A CN201910368019 A CN 201910368019A CN 110107006 B CN110107006 B CN 110107006B
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- steel beam
- connecting rod
- outer frame
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- prefabricated floor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/10—Load-carrying floor structures formed substantially of prefabricated units with metal beams or girders, e.g. with steel lattice girders
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Abstract
A large-span composite structure floor system comprises: combination girder steel structure, prefabricated building apron. The combination girder steel structure includes: outer frame girder steel, interior cross girder steel. The outer frame steel beam is connected with the concrete column. The inner cross steel beam is erected on the outer frame steel beam and is positioned inside the rectangular frame formed by the outer frame steel beams. The outer frame steel beam and the inner cross steel beam form a structure shaped like a Chinese character 'tian'. The prefabricated floor slab is arranged in a square frame formed by the outer frame steel beam and the inner cross steel beam. The large-span composite structure floor provided by the invention enables the whole outer frame steel beam structure to have larger span. Therefore, the density of concrete columns in the building is reduced, the design difficulty in the building floor is reduced, and the diversity of the building floor design is improved.
Description
Technical Field
The invention relates to a floor system, in particular to a large-span composite structure floor system, and belongs to the technical field of building engineering.
Background
The cast-in-place integral floor system has good integrity and strong anti-seismic performance and is widely used in common reinforced concrete structures. But the on-site wet operation is more, the self weight is great, the working procedure is complex, the construction period is long, and a large amount of templates are required on the site; in addition, the concrete slab bottom is easy to crack, the floor slab span is limited, and the column net is too dense.
The assembled floor has the advantages of high construction speed, neat construction site, building material saving, high industrialization degree and the like, and the assembled floor is increasingly used in practical engineering; the existing fabricated floor system mostly adopts a steel bar truss floor bearing plate, a profiled steel sheet combined floor slab or a laminated slab. The composite structure is used for exerting the advantages of steel and concrete, reducing the self weight of the floor, and having certain economic benefit compared with steel floors.
However, the prefabricated floor slab has limited structural strength, and the number of the concrete columns of the pre-support floor slab in unit area is large, so that the density of the concrete columns in the building floor is high, and the building design in the building floor is greatly restricted.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to improve the strength of the middle part of a rectangular frame formed by outer frame steel beams by the inner cross steel beams through the combined design of the outer frame steel beams and the inner cross steel beams; make whole frame girder steel structure can have bigger span. Therefore, the density of concrete columns in the building is reduced, the design difficulty in the building floor is reduced, and the diversity of the building floor design is improved. The invention provides a large-span composite structure floor, comprising: combination girder steel structure, prefabricated building apron. The combination girder steel structure includes: outer frame girder steel, interior cross girder steel. The outer frame steel beam is connected with the concrete column. The inner cross steel beam is erected on the outer frame steel beam and is positioned inside the rectangular frame formed by the outer frame steel beams. The outer frame steel beam and the inner cross steel beam form a structure shaped like a Chinese character 'tian'. The prefabricated floor slab is arranged in a square frame formed by the outer frame steel beam and the inner cross steel beam.
According to the embodiment of the invention, the large-span composite structure floor is provided:
the utility model provides a large-span integrated configuration superstructure, large-span integrated configuration superstructure includes: combining a steel beam structure and prefabricating a floor slab; the combination girder steel structure includes: the outer frame steel beam and the inner cross steel beam; the outer frame steel beam is connected with the concrete column; the inner cross steel beam is erected on the outer frame steel beam and is positioned inside the rectangular frame formed by the outer frame steel beams; the outer frame steel beam and the inner cross steel beam form a structure shaped like a Chinese character 'tian'; the prefabricated floor slab is arranged in a square frame formed by the outer frame steel beam and the inner cross steel beam.
Preferably, the large-span composite structure floor further comprises: a guide clamping mechanism; the guide clamping mechanism includes: the supporting arm, the clamping arm and the rotating shaft are arranged on the supporting arm; the supporting arm is fixedly connected with the clamping arm; the rotating shaft is arranged at the joint of the bearing arm and the clamping arm; the rotating shaft is arranged on the contact surface of the prefabricated floor cover plate and the combined steel beam structure; the bearing arm is positioned at the bottom of the prefabricated floor slab; the clamping arm abuts against the side face of the edge of the prefabricated floor slab.
Preferably, the large-span composite structure floor further comprises: installing a guide structure; the installation guide structure is a guide rib plate; the installation guide structure is arranged on the contact surface of the prefabricated floor slab and the combined steel beam structure; the installation guide structure is provided with a guide inclined plane; the bottom of the guide inclined plane is abutted against the prefabricated floor slab.
Preferably, the guide slope is a flat surface, or the guide slope is a curved surface.
Preferably, the prefabricated floor slab comprises: a cover plate main body and a connecting rod; the middle section of the connecting rod is arranged in the cover plate main body, and two ends of the connecting rod extend out of the cover plate main body; the two ends of the connecting rod are connected with the combined steel beam structure.
Preferably, the connecting rod is a steel bar; further preferably, the connecting rod is a prestressed reinforcement.
Preferably, the inner cross steel beam includes: long inner steel beams and short inner steel beams; the two ends of the long inner steel beam are respectively connected with the middle positions of the outer frame steel beams which are parallel to each other; one end of the short inner steel beam is vertically connected with the middle position of the long inner steel beam; the other end of the short inner steel beam is connected with the middle position of the outer frame steel beam.
Preferably, the prefabricated floor slab is arranged in a square frame formed by the outer frame steel beam and the inner cross steel beam and specifically comprises the following steps: the outer frame steel beam, the long inner steel beam and the short inner steel beam are all composed of wing plates and web plates; the web plate is vertically arranged in the middle of the wing plate; the wing plates and the web plates are combined into an inverted T shape; the edge of the prefabricated floor slab is erected on the wing plate.
Preferably, the mounting guide structure and the guide clamping mechanism are arranged at intervals on the wing plate.
Preferably, the two ends of the connecting rod are connected with the combined steel beam structure specifically as follows: two ends of the connecting rod are provided with thread structures; the web plate is provided with a mounting groove corresponding to the connecting rod; the end part of the connecting rod is erected in the mounting groove; the screw thread structure on the connecting rod is matched with the web plates at two ends of the clamping connecting rod through the nuts, and the connecting rod and the combined steel beam are fixed.
Preferably, the setting of the interlude of connecting rod is specifically: the edge of the cover plate main body is provided with a convex part, the connecting rod is prefabricated in the cover plate main body, and two ends of the connecting rod extend out of the convex part of the cover plate main body; the convex parts of the prefabricated floor plates on two sides of the same web plate are staggered with each other.
Preferably, the prefabricated floor slab further comprises: a reinforcing bar rod; the reinforcing rib rods penetrate through the protruding parts at the edges of the prefabricated floor slabs; and the reinforcing bar rods are connected with the concrete columns at the two ends of the edge of the prefabricated floor slab.
Preferably, the combination steel beam structure further includes: the side supporting plates are arranged at two ends of the wing plates and the web plates of the outer frame steel beam; the side supporting plate is connected with the concrete column in a propping mode.
Preferably, the combination steel beam structure further includes: a stud; the pegs are vertically arranged on the wing plates and are positioned between the edges of the prefabricated floor slab and the web plate.
Preferably, the number of the studs between each protruding part and the web is A, the number of the studs between the non-protruding part at the edge of the prefabricated floor slab and the web is B, and B is more than or equal to A; preferably, B is 2 to 4 and A is 1 to 2.
Preferably, the large-span composite structure floor further comprises: steel corbels; the steel corbel includes: the column wrapping cylinder, the bearing plate and the bearing rib plate are arranged; the steel bracket is sleeved on the concrete steel column through the column wrapping cylinder; the bearing plate is arranged at the lower end of the column wrapping barrel; the bearing rib plates are connected with the upper end surface of the bearing plate and the side surface of the column wrapping barrel in a supporting manner; the bearing plate is arranged below the joint of the combined steel beam structure and the concrete column, the upper surface of the bearing plate is connected with the lower surface of the combined steel beam, and the inner surface of the column wrapping cylinder is connected with the outer surface of the concrete steel column.
In the invention, the outer frame steel beam is horizontally arranged. The two ends of the outer frame steel beam are connected with the concrete columns. The outer frame steel beams are connected end to end through concrete columns. The outer frame steel beam forms a rectangular frame. Namely, the rectangular frame is provided with two pairs of parallel outer frame steel beams; the two pairs of outer frame steel beams are perpendicular to each other. The inner cross steel beam is arranged in a rectangular frame formed by the outer frame steel beams. The outer frame steel beam and the inner cross steel beam form a structure shaped like a Chinese character 'tian'. The inner cross steel beam has a supporting effect on the middle part of the rectangular frame formed by the outer frame steel beams, and the strength of the middle part of the rectangular frame formed by the outer frame steel beams is improved. Thereby make the frame girder steel that forms rectangle frame that has interior cross girder steel, compare in prior art the frame girder steel that does not have interior cross girder steel forms rectangle frame has bigger structural strength. Under the condition of supporting the prefabricated floor slab with the same density, the large-span composite structure floor system provided by the invention can adopt fewer concrete columns, and can meet the supporting requirement of the whole structure. Therefore, the design difficulty in the building floor is reduced, and the diversity of the building floor design is improved.
In the prior art, because prefabricated floor slab and combination girder steel structure have multiple connected relation, need carry out accurate adjustment to the position of pre-support floor slab before laying prefabricated floor slab. Due to the heavy weight of the pre-fabricated floor slab, a large amount of physical strength and time of workers are required to be consumed in the process of adjusting the position of the pre-fabricated floor slab. If the placing position is not accurate, the prefabricated floor slab is required to be adjusted and placed again after being lifted. Greatly influencing the construction progress.
In order to solve the above problems, in the present invention, the clamping mechanism is guided to be of a movable design as shown in fig. 11 to 12. The guide clamping mechanism has the functions of quickly guiding the prefabricated floor slab to be accurately erected on the combined steel beam structure and clamping the prefabricated floor slab. The rotating shaft is arranged on the contact surface of the prefabricated floor cover plate and the combined steel beam structure, namely the rotating shaft is arranged on the wing plate; the bearing arm and the clamping arm are connected with the wing plate through a rotating shaft. The fixed structure composed of the bearing arm and the clamping arm can rotate around the rotating shaft.
It should be noted that the fixed structure formed by the supporting arm and the clamping arm rotates around the rotating shaft, that is, the installation process of the prefabricated floor cover plate can be divided into three states:
the first state is that the prefabricated floor cover plate is not placed in the combined steel beam structure, namely the prefabricated floor cover plate is not placed in a structure in a shape like a Chinese character 'tian' formed by the outer frame steel beam and the inner cross steel beam; at this time, as shown in fig. 11, the fixing structure composed of the support arm and the clamping arm in the guiding and clamping mechanism is in an upturned state, and an acute angle is formed between the support arm and the wing plate; the clamping arms are inclined in a direction away from the prefabricated floor slab.
The second state is that in the process of placing the prefabricated floor slab, the prefabricated floor slab abuts against and pushes the bearing arm to rotate downwards; the clamping arm is driven by the supporting arm to rotate towards the direction close to the prefabricated floor slab. The bearing arm and the clamping arm rotate simultaneously.
When the angle between the bearing arm and the wing plate is close to 0 degree, if the angle between the bearing arm and the wing plate is 3 degrees, the clamping arm firstly props against the edge of the prefabricated floor cover plate, as the periphery of the prefabricated floor cover plate is provided with the guide clamping mechanism, and the prefabricated floor cover plate is placed in a non-aligned way, namely the clamping arms at the periphery of the prefabricated floor cover plate do not prop against the prefabricated floor cover plate simultaneously to a great extent; firstly, pushing a prefabricated floor slab to perform position adjustment by a clamping arm which firstly pushes against the prefabricated floor slab in the horizontal direction; and when all the clamping arms abut against the prefabricated floor slab, the prefabricated floor slab is successfully installed and positioned, and the clamping mechanism is successfully guided. The angle between the support arm and the wing is now closer to 0 °, for example 1 °.
In the second state, after the clamping arm has performed a positioning action on the prefabricated floor covering, the angle formed by the supporting arm and the wing plate is thus 1 °. The prefabricated floor slab continues to press the bearing arm downwards under the action of gravity. The clamping arm is further used for exerting force on the prefabricated floor slab, so that the prefabricated floor slab is clamped.
It is further noted that during the installation of the above-mentioned prefabricated floor covering panels. The prefabricated floor cover plate is placed into the square frame formed by the outer frame steel beam and the inner cross steel beam, the placing position of the prefabricated floor cover plate is not required to be accurately adjusted in time, and the prefabricated floor cover plate is only required to be directly placed into the square frame formed by the outer frame steel beam and the inner cross steel beam. Under the action of the guide clamping mechanism, the accurate position of the prefabricated floor slab is automatically adjusted. In having practiced thrift the work progress, the time of installation prefabricated floor board improves the efficiency of construction. Simultaneously, the clamping arm of the guide clamping structure can further clamp the prefabricated floor cover plate to preliminarily fix the pre-support floor cover plate, so that the construction work is facilitated. The occurrence probability of construction accidents is reduced.
In the present application, the guide clamping mechanism further comprises: a torsion spring. The torsion spring is arranged on the rotating shaft, one arm of the torsion spring is abutted to the bearing arm, and the other arm of the torsion spring is abutted to the wing plate. The torsion spring enables the fixing structure formed by the bearing arm and the clamping arm to turn upwards, and the fixing structure formed by the bearing arm and the clamping arm is kept in the first state.
In this application, as in fig. 9-10, the large-span composite structure floor further includes: and installing a guide structure. The installation guide structure is provided on the wing plate. The installation guide structure is a wedge-like structure; the installation guide structure is arranged on the combined steel beam structure at the peripheral edge of the prefabricated floor slab. The bottom of the guiding bevel of the installation guiding structure abuts against the edge of the prefabricated floor covering. The upper part of the guiding inclined plane is a smooth surface, and the upper part of the guiding inclined plane deviates to the direction far away from the prefabricated floor slab. In the process of installing the prefabricated floor slab, the prefabricated floor slab can be directly placed into a square frame formed by the outer frame steel beam and the inner cross steel beam on the premise of accurate alignment, and the inclined plane is guided to be far away from the edge of the prefabricated floor slab. Along with the decline of prefabricated floor cover board, partial guide inclined plane can be contradicted to the edge of prefabricated floor cover board, applys the effort to prefabricated floor cover board in the horizontal direction for prefabricated floor cover board carries out position adjustment in the horizontal direction. Until the prefabricated floor slab has fallen to the very bottom and has collided against the wing plate. The prefabricated floor slab determines the accurate position under the interference effect of the bottom of the guide inclined plane, and the construction time of workers in the process of installing the prefabricated floor slab is also reduced. The construction efficiency is improved.
In the invention, the outer frame steel beam is horizontally arranged. The two ends of the outer frame steel beam are connected with the concrete columns. The prefabricated floor slab is erected in a square frame formed by the outer frame steel beam and the inner cross steel beam. The pre-branch floor covering includes: apron main part, connecting rod. The cover plate main body is a multi-ribbed precast slab, namely, a plurality of rib beams are arranged at the bottom of the cover plate main body. The interlude of connecting rod is worn to establish in the apron main part, and the connecting rod is parallel with the apron main part. The connecting rod extends out of the cover plate main body and is perpendicular to the edge of the cover plate main body. The connecting rods are divided into two groups. The two groups of connecting rods are mutually vertical. Two sets of connecting rods are respectively connected in the two pairs of parallel frame girder steels in the apron main part outside perpendicularly. The connecting rod in the prefabricated floor cover plate is connected with the outer frame steel beam, and the structural strength of the floor system on the horizontal plane is improved. The building has good overall performance and better earthquake resistance. Meanwhile, the connecting rods penetrate through the cover plate main body, so that the overall structural strength of the prefabricated floor cover plate is improved, and the toughness of the prefabricated floor cover plate stressed in the vertical direction is improved.
It should be noted that the connecting rod is a prestressed reinforcement, that is, after the connecting rod is connected with the web of the combined steel beam structure at the two ends of the connecting rod through the threaded structure, the connecting rod generates prestress in the direction of the center of the connecting rod. The nut matched with the thread structure is tightly pressed on the web plate, and the web plate gives the nut external force far away from the center of the connecting rod. Make the screw thread of the helicitic texture of connecting rod contradict with the screw thread of nut each other, increase the pressure between the screw thread, improve the frictional force between the screw thread. The effect of preventing the nut from loosening is achieved.
In the present invention, the inner cross steel beam includes: a long inner steel beam and two short inner steel beams. The two ends of the long inner steel beam are respectively connected with the middle positions of the outer frame steel beams which are parallel to each other. One end of the short inner steel beam is vertically connected with the middle position of the long inner steel beam. The other end of the short inner steel beam is connected with the middle position of the outer frame steel beam.
In the invention, the outer frame steel beam, the long inner steel beam and the short inner steel beam are all composed of wing plates and web plates. The wing plates are horizontally arranged. The web is arranged above the wing plate along the direction of the wing plate and perpendicular to the wing plate. The web plate and the wing plate form an inverted T-shaped steel beam. Because the edge of the prefabricated floor slab is erected on the wing plate of the combined steel beam structure. The pterygoid lamina of the rectangular frame that the combination girder steel structure becomes plays the effect of support to prefabricated floor board.
In the invention, the two ends of the connecting rod are provided with the thread structures, and the thread structures at the two ends of the connecting rod are matched with the nuts through the thread structures after penetrating through the webs at the two ends of the prefabricated floor slab, so that the connecting rod is fixedly connected with the webs of the combined steel beam structure in the direction of the connecting rod. Thereby make prefabricated floor cover plate and combination girder steel structure at connecting rod direction fixed connection. Because there are two sets of mutually perpendicular's connecting rod and combination girder steel structure to pass through helicitic texture fixed connection in prefabricated floor board. Thereby make prefabricated floor board and combination girder steel structure rigid fixation connect on the horizontal plane. Thereby improving the structural rigidity of the integral floor slab. And meanwhile, the prefabricated floor slab is convenient to disassemble, and the prefabricated floor slab can be upwards detached from the rectangular frame formed by the combined steel beam structure only by loosening the nut during disassembly.
It is further noted that the web is provided with an installation groove. The opening of the mounting groove is vertically upward. The web is connected with the connecting rod through the mounting groove. The positions of the installation grooves of the web plates correspond to the connecting rods one by one. Prefabricated floor board sets up behind the pterygoid lamina, and the connecting rod is contradicted on the mounting groove, has played the effect of certain sharing gravity. In addition, due to the existence of the mounting groove, the prefabricated floor slab is very convenient to mount, namely, the prefabricated floor slab is placed from top to bottom only by aligning the opening positions of the connecting rod and the mounting groove, and the prefabricated floor slab can be accurately mounted in a rectangular frame formed by the combined steel beam structure.
In the invention, the edge of the cover plate main body of the prefabricated floor cover plate is provided with a bulge, namely the bulge is positioned in a reserved space between the edge of the cover plate main body and the web plate. After the prefabricated floor slab and the combined steel beam structure are fixedly installed, concrete is cast in the reserved space between the edge of the slab main body and the web plate, and the structural strength between the prefabricated floor slab and the combined steel beam structure is increased and improved. Because the edge of apron main part is provided with the bulge, can be so that the connection structure of concrete and prefabricated floor board of pouring now is inseparabler.
It should be further noted that, the connecting rod specifically protrudes from the protruding portion of the cover plate main body, and the protruding portion is rectangular or semicircular in cross section. The connecting rods of the prefabricated floor cover plates on the two sides of the same combined steel beam structure and the connecting parts of the web plates of the combined steel beam structure are staggered mutually.
In the present invention, the prefabricated floor slab further comprises: the reinforcing bar pole. The reinforcing rib rod penetrates through the protruding part of the cover plate main body. Parallel to the edges of the prefabricated floor covering. The prefabricated floor slab is rectangular in four sides, namely each prefabricated floor slab is provided with four reinforcing rib rods. The reinforcing bar rod is connected with the concrete columns at the two ends of the edge of the prefabricated floor slab. And the part of the reinforcing bar rod exposed out of the bulge is positioned in the area of the cast-in-place concrete. Therefore, the reinforcing rib rods strengthen the structural connection strength of the prefabricated floor slab and the cast-in-place concrete, and the prefabricated floor slab is connected with the concrete column. The structural strength of the integral floor system is also enhanced.
In the invention, the side supporting plates are arranged at two ends of the whole combined steel beam structure, and the side supporting plates are connected with the web plate and the end part of the wing plate of the combined steel beam structure. The combined steel beam structure is connected with the concrete column through the side supporting plate.
In the present invention, the peg is provided on the wing. Namely, the pin is fixedly arranged on the wing plate, or the pin is detachably arranged on the wing plate. The peg is located between the edge of prefabricated floor slab and the web, i.e. is arranged in the area of the cast-in-place concrete. The stud can make cast in situ concrete and pterygoid lamina be connected more closely in vertical direction, has strengthened cast in situ concrete promptly and has made up the structural strength that the girder steel structure is connected.
In the invention, the steel corbels are arranged on the concrete columns and are positioned below the rectangular frame formed by the combined steel beam structure. The weight of the whole pre-support floor slab can be effectively supported. The longitudinal structural strength of the whole floor slab is improved.
Preferably, the installation guide structure and the guide clamping mechanism are arranged on the wing plate at intervals: and the wing plate on one side of the steel beam close to the precast floor cover plate is provided with an installation guide structure and a guide clamping mechanism. The installation guide structure and the guide clamping mechanism are arranged on the wing plate at intervals. The effect of installing the prefabricated floor cover plate faster and more stably is achieved.
Due to the adoption of the design of the combined floor system, if the building needs to be dismantled in the later period, the part of cast-in-place concrete can be knocked out, and after the connecting rods for connecting the prefabricated floor cover plate and the combined steel beam structure are cut off, the prefabricated floor cover plate and the combined steel beam structure can be separated and dismantled. The recovery of production data such as steel is convenient.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with the prior art, the scheme provided by the invention has a larger span structure, so that the density of concrete columns in a building is reduced, the design difficulty in the floor of the building is reduced, and the diversity of the floor design of the building is improved;
2. compared with the prior art, the scheme provided by the invention has the advantages that the guide clamping mechanism is arranged, the time for installing the prefabricated floor cover plate in the construction process can be saved, and the construction efficiency is improved;
3. compared with the prior art, the scheme provided by the invention has the advantages that the guide clamping mechanism is arranged, the pre-support floor cover plate is preliminarily fixed, and the subsequent building construction work is facilitated. The occurrence probability of construction accidents is reduced;
4. compared with the prior art, the scheme provided by the invention has the installation guide structure, so that the time for installing the prefabricated floor cover plate in the construction process can be saved, and the construction efficiency is improved;
5. compared with the prior art, the scheme provided by the invention improves the integral structural strength of the floor system. The building has good overall performance and better anti-seismic performance;
6. compared with the prior art, the scheme provided by the invention has a matching structure which is easier to install, so that the overall construction speed is high;
7. compared with the prior art, the scheme provided by the invention is beneficial to the removal of the floor plate in the later period and is convenient for recovering production data.
Drawings
FIG. 1 is a schematic view of the overall structure of a large-span composite structure floor according to an embodiment of the present invention;
FIG. 2 is a schematic view of a composite steel beam structure of a large-span composite structure floor according to an embodiment of the present invention;
FIG. 3 is a schematic connecting diagram of a prefabricated slab of a large-span composite structure floor system in the embodiment of the invention;
FIG. 4 is a schematic connecting rod connecting view of a large-span composite structure floor according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a steel beam of a large-span composite floor system according to an embodiment of the present invention;
FIG. 6 is a detailed view of the steel girder structure of the large-span composite structure floor according to the embodiment of the present invention;
FIG. 7 is an exploded view of the assembled steel girder structure of a large span assembled floor system according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a steel corbel of a large-span composite floor according to an embodiment of the present invention;
FIG. 9 is a schematic view of a guiding structure for guiding a prefabricated floor slab of a large-span composite structure floor according to an embodiment of the present invention;
FIG. 10 is a schematic view of a positioning prefabricated floor slab of an installation guide structure of a large-span composite structure floor according to an embodiment of the present invention;
FIG. 11 is a schematic view of a guiding and clamping mechanism for guiding a prefabricated floor slab of a large-span composite structure floor according to an embodiment of the present invention;
FIG. 12 is a schematic view of a guiding and clamping mechanism for positioning and clamping a prefabricated floor slab of a large-span composite structure floor according to an embodiment of the present invention;
FIG. 13 is a schematic view of an installation and guide structure of a large-span composite structure floor according to an embodiment of the present invention;
fig. 14 is a schematic view of a guiding and clamping mechanism of a large-span composite structure floor in the embodiment of the invention.
Reference numerals:
1: assembling a steel beam structure; 101: an outer frame steel beam; 102: an inner cross steel beam; 10201: a long inner steel beam; 10202: a short inner steel beam; 103: a wing plate; 104: a web; 10401: mounting grooves; 105: side supporting plates; 106: a stud; 2: prefabricating a floor slab; 201: a cover plate main body; 202: a connecting rod; 20201: a thread structure; 203: a projection; 204: a reinforcing bar rod; 3: a guide clamping mechanism; 301: a support arm; 302: a clamp arm; 303: a rotating shaft; 4: installing a guide structure; 401: a guide ramp; 5: steel corbels; 501: wrapping a column barrel; 502: a bearing plate.
Detailed Description
According to the embodiment of the invention, the large-span composite structure floor is provided:
the utility model provides a large-span integrated configuration superstructure, large-span integrated configuration superstructure includes: the combined steel beam structure 1 and the prefabricated floor slab 2 are combined; the combined steel beam structure 1 includes: an outer frame steel beam 101 and an inner cross steel beam 102; the outer frame steel beam 101 is connected with the concrete column; the inner cross steel beam 102 is erected on the outer frame steel beam 101 and is positioned inside a rectangular frame formed by the outer frame steel beam 101; the outer frame steel beam 101 and the inner cross steel beam 102 form a structure shaped like a Chinese character 'tian'; the prefabricated floor slab 2 is arranged in a frame formed by the outer frame steel beam 101 and the inner cross steel beam 102.
Preferably, the large-span composite structure floor further comprises: a guide clamping mechanism 3; the guide clamp mechanism 3 includes: a supporting arm 301, a clamping arm 302 and a rotating shaft 303; the supporting arm 301 is fixedly connected with the clamping arm 302; the rotating shaft 303 is arranged at the joint of the supporting arm 301 and the clamping arm 302; the rotating shaft 303 is arranged on the contact surface of the prefabricated floor slab 2 and the combined steel beam structure 1; the supporting arm 301 is positioned at the bottom of the prefabricated floor slab 2; the gripping arms 302 abut against the edge sides of the prefabricated floor covering 2.
Preferably, the large-span composite structure floor further comprises: mounting the guide structure 4; the mounting guide structure 4 is a guide rib plate; the installation guide structure 4 is arranged on the contact surface of the prefabricated floor slab 2 and the combined steel beam structure 1; the installation guide structure 4 is provided with a guide slope 401; the bottom of the guiding ramp 401 abuts against the prefabricated floor covering 2.
Preferably, the guide slope 401 is a flat surface, or the guide slope 401 is a curved surface.
Preferably, the prefabricated floor slab 2 comprises: a cover plate main body 201 and a connecting rod 202; the middle section of the connecting rod 202 is arranged in the cover plate main body 201, and two ends of the connecting rod 202 extend out of the cover plate main body 201; both ends of the connecting rod 202 are connected with the combined steel beam structure 1.
Preferably, the connecting rod 202 is a steel bar; further preferably, the connecting rod 202 is a prestressed steel bar.
Preferably, the inner cross steel beam 102 includes: long inner steel beam 10201, short inner steel beam 10202; two ends of the long inner steel beam 10201 are respectively connected with the middle positions of the outer frame steel beams 101 which are parallel to each other; one end of the short inner steel beam 10202 is vertically connected with the middle position of the long inner steel beam 10201; the other end of the short inner steel beam 10202 is connected with the middle position of the outer frame steel beam 101.
Preferably, the arrangement of the precast floor slab 2 in the frame formed by the outer frame steel beam 101 and the inner cross steel beam 102 specifically includes: the outer frame steel beam 101, the long inner steel beam 10201 and the short inner steel beam 10202 are all composed of wing plates 103 and web plates 104; the web plate 104 is vertically arranged in the middle of the wing plate 103; the wing plates 103 and the web plates 104 are combined into an inverted T shape; the edge of the prefabricated floor covering 2 is set up on the wing plate 103.
Preferably, the mounting guide structure 4 and the guide clamping mechanism 3 are arranged at intervals on the wing plate 103.
Preferably, the connection between the two ends of the connecting rod 202 and the combined steel beam structure 1 is specifically as follows: two ends of the connecting rod 202 are provided with thread structures 20201; a mounting groove 10401 is formed in the position, corresponding to the connecting rod 202, of the web plate 104; the end of the connecting rod 202 is erected in the mounting groove 10401; the threaded structure 20201 on the connecting rod 202 cooperates with the web 104 to clamp the two ends of the connecting rod 202 by nuts, thereby fixing the connecting rod 202 and the composite steel beam 1.
Preferably, the middle section of the connecting rod 202 is disposed in the cover plate main body 201, specifically: the edge of the cover plate main body 201 is provided with a convex part 203, the connecting rod 202 is prefabricated in the cover plate main body 201, and two ends of the connecting rod 202 extend out of the convex part 203 of the cover plate main body 201; the projections 203 of the prefabricated floor panels 2 on both sides of one and the same web 104 are offset from each other.
Preferably, the prefabricated floor slab 2 further comprises: a reinforcing bar rod 204; the reinforcing bar rod 204 is arranged on the bulge part 203 at the edge of the prefabricated floor slab 2 in a penetrating way; and the reinforcing bar rods 204 are connected with the concrete columns at the two ends of the edge of the prefabricated floor slab 2.
Preferably, the combined steel beam structure 1 further includes: side support plates 105, the side support plates 105 being provided at both ends of the wing plates 103 and the web plates 104 of the outer frame steel beam 101; the side support plate 105 is in abutting connection with the concrete column.
Preferably, the combined steel beam structure 1 further includes: a peg 106; the peg is arranged vertically on the wing plate 103 and the peg 106 is located between the edge of the prefabricated floor slab 2 and the web 104.
Preferably, the number of the pegs 106 between each protrusion 203 and the web 104 is A, the number of the pegs 106 between the non-protrusion 203 of the edge of the prefabricated floor slab 2 and the web 104 is B, and B is more than or equal to A; preferably, B is 2 to 4 and A is 1 to 2.
Preferably, the large-span composite structure floor further comprises: 5, steel corbels; the steel bracket 5 includes: the column covering cylinder 501, the bearing plate 502 and the bearing rib plate; the steel bracket 5 is sleeved on the concrete steel column through a column wrapping cylinder 501; the bearing plate 502 is arranged at the lower end of the column wrapping barrel 501; the bearing rib plates are connected with the upper end face of the bearing plate 502 and the side face of the column wrapping barrel 501 in a supporting manner; the bearing plate 502 is arranged below the joint of the combined steel beam structure 1 and the concrete column, the upper surface of the bearing plate 502 is connected with the lower surface of the combined steel beam structure 1, and the inner surface of the column wrapping barrel 501 is connected with the outer surface of the concrete steel column.
Example 1
The utility model provides a large-span integrated configuration superstructure, large-span integrated configuration superstructure includes: combination girder steel structure 1, prefabricated floor board 2. The combined steel beam structure 1 includes: outer frame girder steel 101, interior cross girder steel 102. The outer frame steel beam 101 is connected to the concrete column. The inner cross steel beam 102 is erected on the outer frame steel beam 101 and is located inside a rectangular frame formed by the outer frame steel beam 101. The outer frame steel beam 101 and the inner cross steel beam 102 form a structure shaped like a Chinese character 'tian'. The prefabricated floor slab 2 is arranged in a frame formed by the outer frame steel beam 101 and the inner cross steel beam 102.
Example 2
Example 3
Example 4
Example 5
Example 4 is repeated except that the prefabricated floor covering panels 2 comprise: a cover plate main body 201 and a connecting rod 202; the middle section of the connecting rod 202 is arranged in the cover plate main body 201, and two ends of the connecting rod 202 extend out of the cover plate main body 201; both ends of the connecting rod 202 are connected with the combined steel beam structure 1.
Example 6
Example 5 was repeated except that the inner cross beam 102 included: long inner steel beam 10201, short inner steel beam 10202. Both ends of the long inner steel beam 10201 are respectively connected with the middle positions of the outer frame steel beams 101 which are parallel to each other. One end of the short inner steel beam 10202 is vertically connected with the middle position of the long inner steel beam 10201. The other end of the short inner steel beam 10202 is connected with the middle position of the outer frame steel beam 101. The prefabricated floor slab 2 is arranged in a square frame formed by the outer frame steel beam 101 and the inner cross steel beam 102, and specifically comprises the following steps: the outer frame steel beam 101, the long inner steel beam 10201 and the short inner steel beam 10202 are all composed of wing plates 103 and web plates 104. The web 104 is vertically arranged in the middle of the wing plate 103. The wing plate 103 and the web plate 104 are combined into an inverted "T" shape. The edge of the prefabricated floor covering 2 is set up on the wing plate 103. The mounting guide structure 4 and the guide clamping mechanism 3 are arranged at intervals on the wing plate 103.
Example 7
Embodiment 6 is repeated except that the connection of the two ends of the connecting rod 202 and the combined steel beam structure 1 is specifically: two ends of the connecting rod 202 are provided with thread structures 20201; a mounting groove 10401 is formed in the position, corresponding to the connecting rod 202, of the web plate 104; the end of the connecting rod 202 is erected in the mounting groove 10401; the threaded structure 20201 on the connecting rod 202 cooperates with the web 104 to clamp the two ends of the connecting rod 202 by nuts, thereby fixing the connecting rod 202 and the composite steel beam 1.
Example 8
Embodiment 7 is repeated, except that the middle section of the connecting rod 202 is arranged in the cover plate main body 201, specifically: the edge of the cover plate main body 201 is provided with a convex part 203, the connecting rod 202 is prefabricated in the cover plate main body 201, and two ends of the connecting rod 202 extend out of the convex part 203 of the cover plate main body 201; the projections 203 of the prefabricated floor panels 2 on both sides of one and the same web 104 are offset from each other.
Example 9
Example 8 is repeated, except that the prefabricated floor covering 2 further comprises: a stiffener bar 204. The reinforcing bar 204 is arranged through the protrusion 203 at the edge of the prefabricated floor slab 2. And the reinforcing bar rods 204 are connected with the concrete columns at the two ends of the edge of the prefabricated floor slab 2.
Example 10
Example 9 was repeated except that the composite steel girder structure 1 further includes: and side support plates 105, wherein the side support plates 105 are arranged at the two ends of the web 104 and the wing plates 103 of the outer frame steel beam 101. The side support plate 105 is in abutting connection with the concrete column.
Example 11
Example 10 was repeated except that the composite steel girder structure 1 further includes: a peg 106. The peg is arranged vertically on the wing plate 103 and the peg 106 is located between the edge of the prefabricated floor slab 2 and the web 104.
Example 12
Example 11 is repeated, except that the number of studs 106 between each of said projections 203 and the web 104 is A, and the number of studs 106 between the non-projecting portion 203 of the edge of the prefabricated floor slab 2 and the web 104 is B, B ≧ A. Preferably, B is 2 to 4 and A is 1 to 2.
Example 13
Repeat embodiment 12, but the long-span composite construction superstructure still includes: 5, steel corbels; the steel bracket 5 includes: the column covering cylinder 501, the bearing plate 502 and the bearing rib plate; the steel bracket 5 is sleeved on the concrete steel column through a column wrapping cylinder 501; the bearing plate 502 is arranged at the lower end of the column wrapping barrel 501; the bearing rib plates are connected with the upper end face of the bearing plate 502 and the side face of the column wrapping barrel 501 in a supporting manner; the bearing plate 502 is arranged below the joint of the combined steel beam structure 1 and the concrete column, the upper surface of the bearing plate 502 is connected with the lower surface of the combined steel beam structure 1, and the inner surface of the column wrapping barrel 501 is connected with the outer surface of the concrete steel column.
Claims (14)
1. The utility model provides a large-span integrated configuration superstructure which characterized in that: the long-span integrated configuration superstructure includes: the combined steel beam structure (1) and the prefabricated floor slab (2) are combined; the combined steel beam structure (1) comprises: an outer frame steel beam (101) and an inner cross steel beam (102); the outer frame steel beam (101) is connected with the concrete column; the inner cross steel beam (102) is erected on the outer frame steel beam (101) and is positioned inside a rectangular frame formed by the outer frame steel beam (101); the outer frame steel beam (101) and the inner cross steel beam (102) form a structure shaped like a Chinese character 'tian'; the prefabricated floor slab (2) is arranged in a square frame formed by the outer frame steel beam (101) and the inner cross steel beam (102);
the large-span integrated configuration superstructure still includes: a guide clamping mechanism (3); the guide clamping mechanism (3) comprises: a supporting arm (301), a clamping arm (302) and a rotating shaft (303); the supporting arm (301) is fixedly connected with the clamping arm (302); the rotating shaft (303) is arranged at the joint of the bearing arm (301) and the clamping arm (302); the rotating shaft (303) is arranged on the contact surface of the prefabricated floor slab (2) and the combined steel beam structure (1); the bearing arm (301) is positioned at the bottom of the prefabricated floor slab (2); the clamping arm (302) is abutted against the side surface of the edge of the prefabricated floor slab (2);
the large-span integrated configuration superstructure still includes: a mounting guide structure (4); the mounting guide structure (4) is a guide rib plate; the installation guide structure (4) is arranged on the contact surface of the prefabricated floor slab (2) and the combined steel beam structure (1); a guide inclined plane (401) is arranged on the installation guide structure (4); the bottom of the guide inclined plane (401) is abutted against the prefabricated floor slab (2); the inner cross steel beam (102) comprises: long inner steel beams (10201) and short inner steel beams (10202); the outer frame steel beam (101), the long inner steel beam (10201) and the short inner steel beam (10202) are all composed of wing plates (103) and web plates (104); the web (104) is vertically arranged in the middle of the wing plate (103); the wing plates (103) and the web plates (104) are combined into an inverted T shape; the edge of the prefabricated floor slab (2) is erected on the wing plate (103); the installation guide structure (4) and the guide clamping mechanism (3) are arranged on the wing plate (103) at intervals.
2. The large-span composite structure floor system of claim 1, wherein: the guide slope (401) is a plane, or the guide slope (401) is a curved surface.
3. The large-span composite structure floor system according to claim 1 or 2, wherein: prefabricated floor slab (2) includes: a cover plate main body (201) and a connecting rod (202); the middle section of the connecting rod (202) is arranged in the cover plate main body (201), and two ends of the connecting rod (202) extend out of the cover plate main body (201); and the two ends of the connecting rod (202) are connected with the combined steel beam structure (1).
4. The large-span composite structure floor system of claim 3, wherein: the connecting rod (202) is a steel bar.
5. The large-span composite structure floor system of claim 3, wherein: the connecting rod (202) is a prestressed reinforcement.
6. The large-span composite structure floor system according to any one of claims 1-2 and 4-5, wherein: two ends of the long inner steel beam (10201) are respectively connected with the middle positions of the outer frame steel beams (101) which are parallel to each other; one end of the short inner steel beam (10202) is vertically connected with the middle position of the long inner steel beam (10201); the other end of the short inner steel beam (10202) is connected with the middle position of the outer frame steel beam (101).
7. The large-span composite structure floor system of claim 3, wherein: two ends of the long inner steel beam (10201) are respectively connected with the middle positions of the outer frame steel beams (101) which are parallel to each other; one end of the short inner steel beam (10202) is vertically connected with the middle position of the long inner steel beam (10201); the other end of the short inner steel beam (10202) is connected with the middle position of the outer frame steel beam (101).
8. The large-span composite structure floor system of claim 3, wherein: the both ends of connecting rod (202) with combination girder steel structure (1) are connected specifically and are: two ends of the connecting rod (202) are provided with thread structures (20201); a mounting groove (10401) is formed in the position, corresponding to the connecting rod (202), of the web plate (104); the end part of the connecting rod (202) is erected in the mounting groove (10401); the threaded structure (20201) on the connecting rod (202) is matched with the web (104) which clamps the two ends of the connecting rod (202) through nuts, and the connecting rod (202) and the combined steel beam (1) are fixed.
9. The large-span composite structure floor system of claim 3, wherein: the setting of the interlude of connecting rod (202) is specifically: the edge of the cover plate main body (201) is provided with a convex part (203), the connecting rod (202) is prefabricated in the cover plate main body (201), and two ends of the connecting rod (202) extend out of the convex part (203) of the cover plate main body (201); the bulges (203) of the prefabricated floor slab (2) on the two sides of the same web plate (104) are staggered with each other; and/or
Prefabricated floor board (2) still include: a reinforcing bar rod (204); the reinforcing rib rod (204) penetrates through a protruding part (203) at the edge of the prefabricated floor slab (2); and the reinforcing bar rod (204) is connected with the concrete columns at the two ends of the edge of the prefabricated floor slab (2).
10. The large-span composite structure floor system of claim 9, wherein: the combined steel beam structure (1) further comprises: the side supporting plates (105), the side supporting plates (105) are arranged at two ends of the wing plates (103) and the web plates (104) of the outer frame steel beam (101); the side supporting plate (105) is connected with the concrete column in a butting way; and/or
The combined steel beam structure (1) further comprises: a peg (106); the pegs are arranged vertically on the wing plates (103) and the pegs (106) are located between the edge of the prefabricated floor slab (2) and the web (104).
11. The large-span composite structure floor system of claim 10, wherein: the number of the studs (106) between each bulge (203) and the web (104) is A, the number of the studs (106) between the non-bulge (203) at the edge of the prefabricated floor slab (2) and the web (104) is B, and B is more than or equal to A.
12. The large-span composite structure floor system of claim 11, wherein: b is 2-4 and A is 1-2.
13. The large-span composite structure floor system according to any one of claims 1-2, 4-5 and 7-12, wherein: the large-span integrated configuration superstructure still includes: a steel corbel (5); the steel corbel (5) comprises: the device comprises a column wrapping cylinder (501), a bearing plate (502) and a bearing rib plate; the steel bracket (5) is sleeved on the concrete steel column through a column wrapping cylinder (501); the bearing plate (502) is arranged at the lower end of the column wrapping cylinder (501); the bearing rib plates are connected with the upper end face of the bearing plate (502) and the side face of the column wrapping barrel (501) in a supporting way; the bearing plate (502) is arranged below the joint of the combined steel beam structure (1) and the concrete column, the upper surface of the bearing plate (502) is connected with the lower surface of the combined steel beam (1), and the inner surface of the column wrapping cylinder (501) is connected with the outer surface of the concrete steel column.
14. The large-span composite structure floor system of claim 3, wherein: the large-span integrated configuration superstructure still includes: a steel corbel (5); the steel corbel (5) comprises: the device comprises a column wrapping cylinder (501), a bearing plate (502) and a bearing rib plate; the steel bracket (5) is sleeved on the concrete steel column through a column wrapping cylinder (501); the bearing plate (502) is arranged at the lower end of the column wrapping cylinder (501); the bearing rib plates are connected with the upper end face of the bearing plate (502) and the side face of the column wrapping barrel (501) in a supporting way; the bearing plate (502) is arranged below the joint of the combined steel beam structure (1) and the concrete column, the upper surface of the bearing plate (502) is connected with the lower surface of the combined steel beam (1), and the inner surface of the column wrapping cylinder (501) is connected with the outer surface of the concrete steel column.
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| CN201910368019.4A CN110107006B (en) | 2019-05-05 | 2019-05-05 | Large-span composite structure floor system |
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| CN111733886A (en) * | 2020-05-16 | 2020-10-02 | 江苏瑞沃建设集团有限公司 | Construction method of cover-excavation-method paving system |
| CN113737852B (en) * | 2021-08-20 | 2022-10-11 | 上海二十冶建设有限公司 | Reinforced structure for improving structural integrity of long-span pipe gallery and construction method thereof |
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| CN104405041B (en) * | 2014-11-21 | 2016-03-02 | 大元建业集团股份有限公司 | The prefabricated floor connector of steel building and mounting method thereof |
| CN205502223U (en) * | 2016-04-06 | 2016-08-24 | 广州五羊钢结构有限公司 | Play post steel member structure on roof beam |
| CN105908881B (en) * | 2016-06-02 | 2019-02-12 | 中国矿业大学 | A kind of two-way beam of falling T composite floor |
| CN206503230U (en) * | 2017-01-24 | 2017-09-19 | 白月祥 | A kind of fabricated steel building |
| CN108442522A (en) * | 2018-05-21 | 2018-08-24 | 福建工程学院 | A kind of embedded steel-pipe assembly concrete connecting structure of girder steel and construction method |
| CN208563573U (en) * | 2018-05-21 | 2019-03-01 | 福建工程学院 | A kind of embedded steel-pipe assembly concrete connecting structure of girder steel |
| CN109610707B (en) * | 2018-12-12 | 2020-10-20 | 大连理工大学 | Assembly structure with parallel and level prefabricated steel beams and floor slab and rapid construction method |
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