CN111794485A - Assembled type outer frame-free construction protection platform structure for shear wall structure and manufacturing method - Google Patents
Assembled type outer frame-free construction protection platform structure for shear wall structure and manufacturing method Download PDFInfo
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- CN111794485A CN111794485A CN202010491999.XA CN202010491999A CN111794485A CN 111794485 A CN111794485 A CN 111794485A CN 202010491999 A CN202010491999 A CN 202010491999A CN 111794485 A CN111794485 A CN 111794485A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/20—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
- E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
Abstract
The invention discloses a construction and a manufacturing method of an assembled type outer frame-free construction protection platform for a shear wall structure. Compared with the existing building construction external protection system, the building construction external protection system is simple and reasonable in structure, high in assembly efficiency, reasonable in design and clear in force transmission path, and avoids welding operation, saves construction space. Through the constructional measures such as oval bolt, reduced the assembly degree of difficulty to improve structure wholeness ability as structure second defence line. The structure of the outer frame-free protective structure has the advantages of reliable connection, good integrity, low cost, convenient assembly and environmental protection, and is a novel assembly type building construction outer protective system suitable for the residential building of a shear wall system.
Description
Technical Field
The invention relates to an assembled type outer frame-free construction protection platform structure for a shear wall structure and a manufacturing method thereof, and belongs to the technical field of structural engineering.
Background
The external protection system for building construction provides a working protection platform for construction workers to carry out construction operation, equipment installation and detection and maintenance. The outer protection system for building construction without outer frame is one building construction outer protection system without need of installing and binding (such as scaffold) layer by layer along with the building structure construction. With the rapid development of the building industry in China, the available space of a construction site is greatly limited, so that the research and development of a novel assembly type exterior protection system for exterior-frame-free building construction are urgent.
The external protection system for building construction adopted in the existing building mainly comprises a traditional scaffold system, an assembled attached lifting scaffold system, a suspended external protection frame system and a self-climbing construction external protection system; the self-climbing construction external protection system is mostly used for key structures of high-rise and super high-rise buildings due to overhigh manufacturing cost, so that the traditional scaffold system, the assembled attached lifting scaffold system and the suspended external protection frame system are mostly adopted in the existing civil buildings.
Traditional scaffold system drawback lies in: (1) the occupied construction site is large when the device is put into the field and used, and site resources are wasted. (2) The assembly efficiency is low, and the time and labor cost are high. (3) The slenderness ratio of the scaffold rod is increased along with the rise of the building height, so that the instability risk exists, and the potential safety hazard is caused. Although the assembled attached lifting scaffold system can partially solve the problems of manpower and time resources, the assembled attached lifting scaffold system still has the defects of the traditional scaffold system. The outer protection frame system of suspension type can solve place resource, but connected node is complicated and weak relatively, causes resource dissipation and potential safety hazard. The self-climbing construction external protection system is applied to the field of civil houses, and the manufacturing cost is overhigh. The angle steel is adopted for the truss diagonal rod in the triangular truss bearing structure which is developed for the shear wall structure and is free of the external frame protection system, the bending resistance of the cross section of the member in the weak axis direction is weak, the member is easy to be destabilized and damaged, and the strength utilization of the member is influenced. The structure is connected with the attached wall body through only one bolt, so that the structure is easy to rotate out of the plane, and potential safety hazards are caused.
Based on the structure, the invention creatively provides a novel fabricated exterior-frame-free construction protection platform structure for a shear wall structure and a method, overcomes the defects of the traditional construction protection system adopted in the field of medium-high residential buildings, has the advantages of high assembly efficiency, simple and convenient construction, stable connection with a main structure, reasonable stress, low manufacturing cost, cyclic utilization and the like, is particularly suitable for the exterior-frame-free construction protection platform for the shear wall structure, and provides technical reference for exterior-frame-free construction protection engineering.
Disclosure of Invention
The invention aims to provide an assembled type outer frame-free construction protection platform structure for a shear wall structure and a manufacturing method thereof, and aims to solve the problems that the existing outer frame-free construction protection platform structure for a shear wall system building is complex, large in potential safety hazard, high in manufacturing cost, poor in node connection performance and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an assembled does not have outrigger construction protection platform structure for shear wall structure, including triangle truss load-bearing structure (1), bottom seal short steel pipe (2), truss montant (3), truss chord member (4), truss down tube (5), adhere to wall body (6), upper portion to wearing bolt (7), lower part to wearing bolt (8), steel pipe local reinforcement part (9), welding nut (10), truss chord member circular steel tube connecting piece (11), inboard scaffold montant (12), outside scaffold montant (13), scaffold frame horizontal pole (14), scaffold enclosure horizontal pole (15), template support (16), manned template (17).
The connection relationship of the components is as follows: a steel pipe local reinforcing part (9) is welded at the position of an upper hole and a lower hole of the truss vertical rod (3), and the truss vertical rod (3), the truss chord member (4) and the truss diagonal rod (5) are welded to form a triangular truss bearing structure (1); the bottom sealing short steel pipe (2) is welded with the truss vertical rod (3), a nut is welded at an opening position at the lower part of the bottom sealing short steel pipe (2), a truss chord rod circular steel pipe connecting piece (11) is welded on the truss chord rod (4), and a triangular truss bearing structure (1) is connected with an attached wall body (6) by adopting an upper high-strength and lower high-strength through bolt; the scaffold frame cross rods (14), the scaffold enclosure cross rods (15) and the scaffold vertical rods are spliced one by one to form an upper frame integral enclosure structure; the inner side scaffold vertical rod (12) is screwed in through a bolt, a pre-welded nut is screwed in the inner side scaffold vertical rod to be tightly propped against the bottom sealing short steel pipe (2), a hole welded nut is reserved at the lower part of the outer side scaffold vertical rod (13), and the outer side scaffold vertical rod (13) is screwed in through a bolt, and is tightly propped against the welded nut (10) and the truss chord rod circular steel pipe connecting piece (11). As shown in fig. 1.
Truss montant (3), truss chord member (4) and truss down tube (5) in triangle truss load-bearing structure (1) adopt same model Q345 level hot rolling seamless square steel pipe, the specification is 100mm 4mm, the square steel pipe cross-section is in two main shaft directions bending resistance balanced, has great improvement than the stability of angle steel component, has good stability.
Truss montant (3) height 1350mm, go up the top surface and go up the top surface at same horizontal plane with truss chord member (4), the lower part is grown out terminal surface 150mm under truss down tube (5), truss chord member (4) length 1380mm, truss down tube (5) length 1700mm, carry out welding according to above-mentioned location, because triangle truss bearing structure (1) is main bearing member, consequently required welding position must strictly control the welding seam quality, guarantee to wait strongly with Q345 grade steel pipe, prevent weak position, lead to dangerous some department stress concentration. A circular pore channel with the diameter of 30mm is reserved in the position of the truss vertical rod 100mm away from the upper top surface of the truss chord member (4), and an oval pore channel with the inner diameter of 34mm and the short axis of 25mm is reserved in the position of the truss inclined rod (5) 50mm away from the center of the lower end of the truss inclined rod. As shown in fig. 2.
The outer steel pipe in the bottom sealing short steel pipe (2) is a Q345-grade hot-rolled seamless square steel pipe with the thickness of 100mm multiplied by 4mm, a square steel plate with the thickness of 4mm is welded in the lower bottom, the lower bottom surface of the square steel plate and the lower bottom surface of the steel pipe are positioned on the same horizontal plane, a hole with the thickness of 14mm is formed in the center position 75mm away from the top, and a nut (10) is welded; the inner welding steel plate provides a supporting surface for the inner scaffold rod (12), and meanwhile, the welding nut (10) is screwed in through the M14 common bolt to enable the bottom sealing short steel pipe (2) to be tightly propped against the inner scaffold rod (12), so that the inner scaffold rod (12) is firmly connected with the main bearing part triangular truss bearing structure (1). The existence of the welding nut (10) effectively weakens the phenomenon of extrusion buckling damage to the wall of the steel pipe in the fastening bolt and use stage. As shown in fig. 5.
The attached wall body (6) is a structural wall body required to be attached to the assembly type frameless construction protection platform, circular pore channels with the diameter of 30mm are reserved in the positions, corresponding to the upper portion and the lower portion, of the attached wall body (6) according to construction and installation requirements, and the attached wall body (6) can be an assembly type shear wall or a cast-in-place type shear wall. As shown in fig. 1.
The upper part penetrating bolt (7) adopts an S10.9-grade M24 high-strength bolt, is a main connecting piece of a triangular truss bearing structure (1) and an attached wall body (6), is also called a stressed penetrating bolt, has main internal force of shearing force and bending moment, is a key for providing bearing force for the construction protection platform, and needs to ensure installation precision during installation and connection. As shown in fig. 3.
The lower part penetrating bolt (8) adopts an S10.9-grade M24 high-strength bolt, is a secondary connecting piece of the triangular truss bearing structure (1) and the attached wall body (6), is also called as an installation penetrating bolt, and has the main function of preventing the triangular truss bearing structure (1) of the main bearing part from rotating outside the plane so as to enhance the stability of the whole structure. The bolt can adjust the distance up and down, thereby greatly improving the fault-tolerant performance of the assembly type structure, facilitating the installation and improving the whole safety storage of the structure as a second defense line of the structure. As shown in fig. 4.
The steel pipe local reinforcing part (9) is divided into a 32 multiplied by 3 circular bolt sleeve and an oval bolt sleeve with the inner diameter of 34mm of long axis and 25mm of short axis; the combined action of the two is that the local position of the steel pipe is stiffened to prevent the local buckling of the steel pipe wall of the position when the fastening bolt is fastened, and the difference is that: the round bolt sleeve is connected with the upper part through bolt (7) through tight thread joint to transmit the construction platform and the upper part load to the attachment wall body (6); in the oval bolt sleeve, the lower part of the through bolt (8) can be vertically adjusted in distance, so that the fault tolerance of the assembled structure is greatly improved, and the assembling is convenient. As shown in fig. 3 and 4.
The truss chord member circular steel tube connecting piece (11) adopts Q235 grade hot-rolled seamless circular steel tubes with the outer diameter of 50mm and the thickness of 3mm, the height of the round steel tubes is 150mm, the truss chord member circular steel tube connecting piece (11) is welded on the truss chord member (4), and the truss chord member circular steel tube connecting piece and the triangular truss bearing structure (1) work together to guarantee the outer side scaffold vertical bar (13). As shown in fig. 6.
The inside scaffold vertical rod (12) adopt Q235 grade hot rolling seamless circular steel tube with the outer diameter of 80mm and the thickness of 5mm, 2000mm is selected for the height of the scaffold vertical rod for achieving the best enclosing effect, the bottom sealing short steel tube (2) is inserted into the scaffold vertical rod to sit on the inside welding square steel plate, the inside scaffold vertical rod (12) and the bottom sealing short steel tube (2) are tightly supported through M14 common bolt fastening, the connection is novel and reliable, and the node is the main connection of the upper portion whole frame enclosing structure and the triangular truss bearing structure (1). The existence of the welding nut (10) effectively weakens the phenomenon of extrusion buckling damage to the wall of the steel pipe in the fastening bolt and use stage. As shown in fig. 5.
The outer side scaffold vertical rod (13) adopts a Q235 grade hot-rolled seamless circular steel tube with the outer diameter of 80mm and the thickness of 5mm, the height of the tube is 2000mm, the tube is fixed on a truss chord member (4), a hole with the thickness of 14mm is formed in the center position away from the bottom by 75mm, a nut is welded, an M14 common bolt penetrates through the outer side scaffold vertical rod (13) and the truss chord member circular steel tube connecting piece (11) to be tightly pressed, the two work together to form novel and reliable connection, and the node is mainly connected with an upper portion whole frame enclosure structure and a triangular truss bearing structure (1). As shown in fig. 6.
Scaffold frame horizontal pole (14) adopt the Q235 grade hot rolling seamless circular steel tube of external diameter 80mm, thickness 5mm, length is 1500mm, forms the whole envelope of upper portion frame with inboard scaffold montant (12), outside scaffold montant (13) and scaffold enclosure horizontal pole (15) concatenation, wholly arrange to the frame form, the anti side force performance is showing and is improving, the outer stability reinforcing of plane can provide more reliable side protection for the personnel on the construction protection platform. As shown in fig. 1.
The scaffold enclosing cross rods (15) are made of Q235-grade hot-rolled seamless round steel tubes with the outer diameter of 80mm and the thickness of 5mm, the tube bodies are spliced with scaffold outside hand rack vertical rods (13), a dense mesh net and a small hole protective net are externally hung, the vertical enclosing effect is achieved, the distance between the scaffold enclosing cross rods (15) is set to be 1000mm, and the safety of constructors is guaranteed to the maximum extent. As shown in fig. 1.
The template support (16) adopts an angle steel frame of less than 5 multiplied by 5, in order to enhance the local bearing capacity and stability, 20mm supporting steel bars are arranged in the frame, and the manned template (17) and the possible load on the upper part thereof are transmitted to the main bearing part triangular truss bearing structure (1). As shown in fig. 1.
The manned formwork (17) adopts a wood formwork or a steel formwork, and is fully distributed on the formwork support (16) to provide a support plane for construction and installation of constructors. As shown in fig. 1.
The invention relates to an assembled type outer frame-free construction protection platform structure for a shear wall structure and a manufacturing method thereof, wherein the specific method comprises the following steps:
the first step is as follows: the bottom of the factory workshop is processed to seal the short steel pipe (2) and the truss vertical rod (3), the truss vertical rod is welded to be integral, the bottom of the outer side of the short steel pipe (2) is sealed to form a bolt hole, and a nut is welded at the position of the bolt hole. The method comprises the following steps that a truss chord member (4), a truss diagonal member (5) and a truss vertical member (3) are prefabricated in a factory to form a triangular truss bearing structure (1); a30 mm hole is formed in the position, 100mm away from the lower portion of a truss chord member (4), of a truss vertical rod (3), a circular bolt sleeve of a steel pipe local reinforcing component (9) with the size of 32mm multiplied by 3mm is welded at the position of a hole formed in the upper portion of the truss vertical rod (3), an elliptical hole with the inner diameter, the long axis and the short axis being 34mm and 25mm is formed in the position, 50mm away from the bottom surface of a truss inclined rod (5), an elliptical bolt sleeve of the steel pipe local reinforcing component (9) is welded at the position of a hole formed in the lower portion of the truss vertical rod (3), and the. 50mm diameter round steel pipes with the height of 150mm are welded at 1300mm away from the end part of the truss chord member (4). The quality of the welding seam at each position is strictly controlled, the strength of the welding seam and the strength of the parent metal are ensured to be equal, and the phenomenon of stress concentration is prevented.
The second step is that: processing scaffold rods in a factory workshop, completing splicing to form an integral enclosure scaffold, wherein the height of the vertical scaffold is 2000mm, the distance between the vertical scaffolds is set according to the specification according to the actual condition of a shear wall structure, additional steel pipes are additionally arranged outside the truss chords (4) at the positions with excessively large individual distances, the distance between the vertical scaffold steel pipes is ensured to be within 1500mm, the distance between the transverse scaffold steel pipes is 1000mm, an externally-hung dense mesh net and a small-hole protective net are integrally used for vertical protection, bolt holes are formed in the bottom of the outer scaffold vertical rods (13), and nuts are welded at the positions of the bolt holes; scaffold bottom formwork supports (16), namely angle 5 x 5 angle steel frames, are welded on the scaffold frame cross rods (14) at the lower side, and support steel bars with the diameter of 20mm are arranged in the frames.
The third step: a triangular truss bearing structure (1) is installed on a construction site, M24S10.9-grade upper part through bolts (7) penetrate through a reserved circular hole in the upper part of a wall body and are screwed into a circular bolt sleeve of an upper part steel pipe local reinforcing part (9), and the part, protruding out of the wall body, of the bolts is fastened with the wall body through nuts, so that tight connection and joint sealing are ensured. An M24S10.9-grade lower high-strength bolt (8) penetrates through a reserved pore passage on the lower portion of the wall body and is screwed into an oval bolt sleeve of a lower steel pipe local reinforcing component (9), a part of the bolt protruding out of the wall body is fastened with the wall body through a nut, and the distance between the joint and the wall body can be adjusted up and down, so that the fault-tolerant performance of the assembled structure can be greatly improved, the assembled structure is convenient to mount, and the assembled structure can be used as a second defense line of the structure.
The fourth step: installing the enclosure scaffold on a construction site, completing interpolation of an inner side scaffold vertical rod (12) and a bottom sealing short steel pipe (2), sitting on an inner welding square steel plate, completing interpolation of an outer side scaffold vertical rod (13) and a truss chord round steel pipe connecting piece (11), sitting on a truss chord (4), screwing a bolt hole through a pre-welded nut by using common bolts (M14) at two positions, and tightly jacking to ensure firm connection along with screwing the bolts.
The fifth step: after the components are installed, a manned template (17) is fully paved on a template support (16), a 200mm high foot baffle plate is arranged outside a sleeve preset at the outer end part of the square steel pipe, the template is used for manufacturing, yellow-black paint is coated on the outer side of the square steel pipe, and the components are lifted to corresponding positions together.
Compared with the prior art, the invention relates to an assembled type outer frame-free construction protection platform structure for a shear wall structure and a manufacturing method thereof, and the structure has the following advantages:
(1) the connection of the main bearing parts is more reasonable and reliable, and the installation is convenient. The triangular truss bearing structure and the attached wall are connected by the upper high-strength bolt and the lower high-strength bolt instead of the single bolt in the prior art, and the existence of the lower high-strength bolt avoids the out-of-plane rotation of the triangular truss bearing structure of the main bearing component under the action of upper load and transmission, thereby greatly reducing potential safety hazard. The upside bolted connection closes the seam tightly, and the downside adopts oval bolt sleeve, improves the fault-tolerant ability of assembled structure greatly to improve the whole safe deposit of structure as the structure second way defence line. The invention relates to the connection originality between a high-strength bolt and a square steel pipe, which adopts a steel pipe local reinforcing part bolt sleeve, solves the adverse effect on the steel pipe in the bolt fastening process in the prior art, and prevents local instability.
(2) The triangular truss bearing structure diagonal rods are hot-rolled seamless square steel tubes, and the safety factor is greatly improved. The cross section of the diagonal rod of the triangular truss bearing structure is made of square steel tubes instead of angle steel, the bending resistance and stability of the weak shaft of the cross section of the angle steel adopted in the existing design are weak, the weak shaft of the cross section of the angle steel is easy to destabilize and damage under the action of load, the bending resistance of the cross section of the square steel tube in the two main shaft directions is balanced, the stability of the cross section of the square steel tube is greatly improved compared with that of an angle steel member, and the phenomenon can be effectively avoided.
(3) The resource waste is reduced, and the national policy of green building construction is reached. The structure of the outer frame-free protective platform can be lifted simultaneously along with the components, on-site welding is not needed, the installation process is simple, only on-site simple assembly is needed, after the upper prefabricated external wall panel enters the field, the lower protective frame is disassembled and installed on the newly-entering external wall panel, and construction is carried out according to the circulating water in the later period, so that the waste of human resources is effectively reduced, the utilization rate of available construction fields is low, the construction time is delayed and the like, and the structure is also suitable for a cast-in-situ shear wall structure.
(4) The enclosure scaffold and the main bearing part are novel and reasonable in connection. The scaffold vertical rod and the truss chord circular steel pipe connecting piece are inserted one by one, the retaining scaffold and the triangular truss bearing structure of the main bearing part are fastened by screwing bolts in the reserved bolt holes in the corresponding positions, the connecting form is novel and reasonable, the assembly and disassembly are convenient, the field resources are reasonably utilized, and the green building construction is completed.
(5) The building construction external protection system has high bearing capacity and strong stability. Compared with the traditional frameless maintenance system, the bearing capacity of the building construction external protection system is improved by more than 2 times, and the upper part enclosure structure is arranged in a frame form, so that the plane external protection performance of the traditional frameless construction external protection system only provided with the outside upright rods is more superior.
Drawings
Fig. 1 is a general schematic diagram of a protective structure without an external frame.
Figure 2 is a detailed view of the triangular truss load-bearing structure.
FIG. 3 is a detailed view of the connection between the local steel pipe reinforcing part on the upper part and the triangular truss bearing structure and the wall.
FIG. 4 is a detailed view of the connection between the local steel pipe reinforcing part at the lower part and the triangular truss bearing structure and the wall.
Fig. 5 is a connection diagram of the bottom sealing short steel pipe and the inner side scaffold vertical rod.
Fig. 6 is a connection diagram of a triangular truss bearing structure and an outer scaffold vertical rod.
Fig. 7 is an integrally connected sectional view.
Detailed Description
The invention is further illustrated by the following specific examples.
As shown in figure 1, the assembled type frameless construction protection platform structure for the shear wall structure comprises a triangular truss bearing structure (1), a bottom sealing short steel pipe (2), a truss vertical rod (3), a truss chord (4), a truss inclined rod (5), an attached wall body (6), an upper part through bolt (7), a lower part through bolt (8), a steel pipe local reinforcing component (9), a welding nut (10), a truss chord round steel pipe connecting piece (11), an inner side scaffold vertical rod (12), an outer side scaffold vertical rod (13), a scaffold frame cross rod (14), a scaffold enclosure cross rod (15), a template support (16) and a manned template (17).
According to the safety requirements of building construction, the consideration of factors such as comprehensive bearing capacity and stability, the cross section of the triangular truss bearing structure is made of square steel pipes. The load size and the bearing capacity required by the triangular truss bearing structure of the main bearing part can be determined according to building structure load specification, the grade, the outer diameter and the wall thickness of square steel tube steel are preliminarily determined according to steel structure design specification, and the triangular truss bearing structure is adjusted by adjusting the grade, the outer diameter and the wall thickness of the square steel tube steel.
The upper stress split bolt is a main bearing connecting part, the material, grade and size of the stress split bolt are determined according to the shearing force and bending moment transmitted to the stress split bolt by the triangular truss bearing structure, the size of the opening of the truss vertical rod and the attached wall is further determined, and the inner diameter of the steel bolt sleeve is 2mm larger than the nominal diameter of the bolt rod in consideration of construction assembly errors.
Determining the load size and the required bearing capacity of the integral enclosure structure of the upper frame according to building structure load specifications, and determining design parameters such as the outer diameter and the wall thickness of the vertical rod of the scaffold, the outer diameter and the wall thickness of the round steel pipe connecting piece of the truss chord member, the type and the size of the bolt, the size of the welding nut and the like.
In the normal use stage, the triangular truss bearing structure provided by the invention always keeps an elastic working state, the upper high-strength bolt is tightly connected and jointed in the connection of the truss vertical rods and the shear wall body, the up-and-down movement of the triangular truss bearing structure is effectively controlled, the lower high-strength bolt provides out-of-plane rotation rigidity, the triangular truss bearing structure and the shear wall body are ensured to have excellent overall performance, the application of the steel pipe local reinforcing part is equivalent to stiffening treatment at the local position of the square steel pipe vertical rods, the local buckling of the steel pipe wall at the part caused by fastening the bolt is effectively prevented in the actual work, and the overall stress is ensured. The control of the quality of the welding seam in the factory prefabricating process is particularly important, the strength of the welding seam and the strength of the base metal are equal, and the overall working performance of the structure is improved.
The assembled type outer frame-free construction protection platform for the shear wall structure has the advantages of reliable connection, good integrity, low manufacturing cost, convenient assembly, environmental protection and suitability for residential buildings of shear wall systems.
The foregoing is an exemplary embodiment of the present invention, and the practice of the present invention is not limited thereto.
Claims (10)
1. The utility model provides a fabricated no outrigger construction protection platform structure for shear wall structure which characterized in that: a steel pipe local reinforcing part (9) is welded at the position of an upper hole and a lower hole of the truss vertical rod (3), and the truss vertical rod (3), the truss chord member (4) and the truss diagonal rod (5) are welded to form a triangular truss bearing structure (1); the bottom sealing short steel pipe (2) is welded with the truss vertical rod (3), a nut is welded at an opening position at the lower part of the bottom sealing short steel pipe (2), a truss chord rod circular steel pipe connecting piece (11) is welded on the truss chord rod (4), and a triangular truss bearing structure (1) is connected with an attached wall body (6) by adopting an upper high-strength and lower high-strength through bolt; the scaffold frame cross rods (14), the scaffold enclosure cross rods (15) and the scaffold vertical rods are spliced one by one to form an upper frame integral enclosure structure; the inner side scaffold vertical rod (12) is screwed in through a bolt, a pre-welded nut is screwed in the inner side scaffold vertical rod to be tightly propped against the bottom sealing short steel pipe (2), a hole welded nut is reserved at the lower part of the outer side scaffold vertical rod (13), and the outer side scaffold vertical rod (13) is screwed in through a bolt, and is tightly propped against the welded nut (10) and the truss chord rod circular steel pipe connecting piece (11).
2. The fabricated exterior-less construction protection platform construction for a shear wall structure of claim 1, wherein: the truss vertical rods (3), the truss chord members (4) and the truss inclined rods (5) in the triangular truss bearing structure (1) are hot-rolled seamless square steel pipes of the same type Q345 grade.
3. The fabricated exterior-less construction protection platform construction for a shear wall structure of claim 1, wherein: the upper top surfaces of the truss vertical rods (3) and the truss chord members (4) are on the same horizontal plane, and the truss diagonal rods (5) are long; a round hole is reserved in the position, away from the center of the top face of the truss chord member (4), of the truss vertical member, and an oval hole is reserved in the position, away from the center of the lower end of the truss diagonal member (5), of the truss diagonal member.
4. The fabricated exterior-less construction protection platform construction for a shear wall structure of claim 1, wherein: the outer steel pipe in the bottom sealing short steel pipe (2) is a Q345-grade hot-rolled seamless square steel pipe, a square steel plate is welded in the lower bottom, the lower bottom surface of the square steel plate and the lower bottom surface of the steel pipe are on the same horizontal plane, a hole is formed in the center position away from the top, and a welding nut (10) is welded; the inner welding steel plate provides a supporting surface for the inner scaffold rod (12), the bottom sealing short steel pipe (2) is tightly propped against the inner scaffold vertical rod (12) by screwing the M14 common bolt into the welding nut (10), and the inner scaffold rod (12) is firmly connected with the bearing component triangular truss bearing structure (1); the existence of the weld nut (10) effectively weakens the extrusion buckling damage to the steel pipe wall in the fastening bolt and use stage.
5. The fabricated exterior-less construction protection platform construction for a shear wall structure of claim 1, wherein: and reserving circular pore channels at the upper and lower parts of the attachment wall body (6) according to the construction and installation requirements, wherein the attachment wall body (6) is an assembled shear wall or a cast-in-situ shear wall.
6. The fabricated exterior-less construction protection platform construction for a shear wall structure of claim 1, wherein:
the triangular truss bearing structure (1) is connected with the upper part of the attached wall body (6) by adopting upper through bolts (7), and the lower part of the attached wall body adopts high-strength bolts (8).
7. The fabricated exterior-less construction protection platform construction for a shear wall structure of claim 1, wherein: the steel pipe local reinforcing part (9) is divided into a circular bolt sleeve and an oval bolt sleeve; the round bolt sleeve is connected with the upper part through bolt (7) through tight thread joint to transmit the construction platform and the upper part load to the attachment wall body (6); the distance between the lower part of the oval bolt sleeve and the through bolt (8) is adjusted up and down;
the truss chord member round steel pipe connecting piece (11) adopts Q235-grade hot-rolled seamless round steel pipes, and the truss chord member round steel pipe connecting piece (11) is welded on the truss chord member (4);
the inner side scaffold vertical rod (12) adopts a Q235 grade hot-rolled seamless circular steel tube;
the outer side scaffold vertical rod (13) is a Q235 grade hot-rolled seamless circular steel tube and is fixed on the truss chord member (4);
the scaffold frame cross rod (14) is a Q235-grade hot-rolled seamless circular steel tube, and is spliced with the inner side scaffold vertical rod (12), the outer side scaffold vertical rod (13) and the scaffold enclosing cross rod (15) to form an upper frame integral enclosing structure which is integrally arranged in a frame form;
the scaffold enclosing cross rod (15) is spliced with scaffold outside vertical rods (13) by adopting Q235-grade hot-rolled seamless circular steel tubes, and is externally hung with a dense mesh net and a small hole protective net.
8. The fabricated exterior-less construction protection platform construction for a shear wall structure of claim 1, wherein: the formwork support (16) adopts an angle steel frame.
9. The fabricated exterior-less construction protection platform construction for a shear wall structure of claim 1, wherein: the manned template (17) adopts a wood template or a steel template.
10. Construction method using the fabricated exterior-less construction protection platform structure of any one of claims 1 to 9, comprising the steps of
The first step is as follows: processing a bottom sealed short steel pipe (2) and a truss vertical rod (3) in a factory workshop, completing welding to form a truss vertical rod whole, forming a bolt hole in the bottom of the outer side of the bottom sealed short steel pipe (2), and welding a nut at the position of the bolt hole; the method comprises the following steps that a truss chord member (4), a truss diagonal member (5) and a truss vertical member (3) are prefabricated in a factory to form a triangular truss bearing structure (1); a hole is formed in the upper portion of the truss vertical rod (3) and below the truss chord member (4), a circular bolt sleeve of the steel pipe local reinforcing component (9) is welded at the hole forming position in the upper portion of the truss vertical rod (3), an elliptical hole is formed in the bottom surface of the lower truss inclined rod (5), an elliptical bolt sleeve of the steel pipe local reinforcing component (9) is welded at the hole forming position in the lower portion of the truss vertical rod (3), and after two parts are welded, the welding positions are polished to be flat; round steel pipes with the diameter are welded at the positions away from the end parts of the truss chords (4);
the second step is that: processing scaffold rods in a factory workshop, completing splicing to form an integral enclosure scaffold, setting the spacing according to the actual condition of a shear wall structure according to the specification, additionally arranging additional steel pipes outside the truss chords (4) at positions with overlarge spacing, externally hanging a dense mesh net and a small hole protective net, forming bolt holes in the outer scaffold vertical rods (13) from the bottom of the outer scaffold, and welding nuts at the positions of the bolt holes; a scaffold bottom formwork support (16) is welded on the lower side scaffold frame cross bar (14);
the third step: installing a triangular truss bearing structure (1) on a construction site, penetrating a reserved circular pore passage on the upper part of a wall body by adopting an upper part through bolt (7), screwing into a circular bolt sleeve of an upper part steel pipe local reinforcing part (9), and fastening the part of the bolt protruding out of the wall body with the wall body through a nut; a lower-level high-strength bolt (8) penetrates through a reserved hole channel on the lower portion of the wall body and is screwed into an oval bolt sleeve of a lower steel pipe local reinforcing part (9), a part of the bolt protruding out of the wall body is fastened with the wall body through a nut, and the distance is adjusted up and down;
the fourth step: installing a surrounding scaffold on a construction site, completing interpolation of an inner side scaffold vertical rod (12) and a bottom sealing short steel pipe (2), sitting on an inner welding square steel plate, completing interpolation of an outer side scaffold vertical rod (13) and a truss chord round steel pipe connecting piece (11), sitting on a truss chord (4), screwing a common bolt (M14) into a bolt hole through a pre-welded nut, and tightening and jacking along with screwing of the bolt to ensure firm connection;
the fifth step: after the components are installed, a manned template (17) is fully paved on a template support (16), a 200mm high foot baffle plate is arranged outside a sleeve preset at the outer end part of the square steel pipe, the template is used for manufacturing, yellow-black paint is coated on the outer side of the square steel pipe, and the manned template and the square steel pipe are lifted to corresponding positions together with the components.
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| CN202010491999.XA CN111794485A (en) | 2020-06-03 | 2020-06-03 | Assembled type outer frame-free construction protection platform structure for shear wall structure and manufacturing method |
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| CN202010491999.XA CN111794485A (en) | 2020-06-03 | 2020-06-03 | Assembled type outer frame-free construction protection platform structure for shear wall structure and manufacturing method |
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| CN104358395A (en) * | 2014-10-29 | 2015-02-18 | 无锡市安捷脚手架有限公司 | Clamping connection type scaffold base |
| CN204781887U (en) * | 2015-06-30 | 2015-11-18 | 上海宝冶集团有限公司 | Prefabricated assembly type structure's no outrigger construction platform |
| CN206128597U (en) * | 2016-11-04 | 2017-04-26 | 曾浩 | Assembly type structure work platform |
| CN206815793U (en) * | 2017-05-05 | 2017-12-29 | 绍兴明煌建材科技有限公司 | A kind of builder's jack |
| CN110685430A (en) * | 2019-10-18 | 2020-01-14 | 四川大安建筑工程有限责任公司 | Assembled prevents that object strikes building outer construction work platform |
| CN210316481U (en) * | 2019-05-31 | 2020-04-14 | 十四冶建设集团云南第六建筑工程有限公司 | Scaffold frame fine setting location safety subassembly encorbelments convenient to ann is torn open fixedly |
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2020
- 2020-06-03 CN CN202010491999.XA patent/CN111794485A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358395A (en) * | 2014-10-29 | 2015-02-18 | 无锡市安捷脚手架有限公司 | Clamping connection type scaffold base |
| CN204781887U (en) * | 2015-06-30 | 2015-11-18 | 上海宝冶集团有限公司 | Prefabricated assembly type structure's no outrigger construction platform |
| CN206128597U (en) * | 2016-11-04 | 2017-04-26 | 曾浩 | Assembly type structure work platform |
| CN206815793U (en) * | 2017-05-05 | 2017-12-29 | 绍兴明煌建材科技有限公司 | A kind of builder's jack |
| CN210316481U (en) * | 2019-05-31 | 2020-04-14 | 十四冶建设集团云南第六建筑工程有限公司 | Scaffold frame fine setting location safety subassembly encorbelments convenient to ann is torn open fixedly |
| CN110685430A (en) * | 2019-10-18 | 2020-01-14 | 四川大安建筑工程有限责任公司 | Assembled prevents that object strikes building outer construction work platform |
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