115 results about "Rc frames" patented technology

The invention relates to a prefabricated reinforced concrete two-way frame beam-column joint. The prefabricated reinforced concrete two-way frame beam-column joint is characterized in that a prefabricated frame column is uninterrupted in the joint area, a prefabricated frame beam is interrupted in the joint area, and a contact surface is formed by the beam end and the column side. Hole channels are reserved in the elevation positions of an upper reinforcing steel bar and a lower reinforcing steel bar of a corresponding beam in the frame column and penetrate into the reinforcing steel bars, the two ends of each reinforcing steel bar are fixed on a pre-buried steel part of the frame beam side, the seismic energy can be consumed under the earthquake effect, and replacement is easy to conduct after the earthquake. Hole channels are reserved in the position, close to the neutral axis, of the inner portion of the two-way frame beam and the corresponding position of the frame column, no-bonding prestressed tendons are arranged in the hole channels, and the prefabricated frame beam and the column are connected by applying prestress along the two-way frame beam. According to the prefabricated reinforced concrete two-way frame beam-column joint, the anti-seismic performance of the fabricated frame structure can be obviously improved. The structure system connected through the joint can achieve the purposes that zero damage or slight damage is achieved under a rare occurrence earthquake, and autonomous resetting is achieved after the earthquake. The joint is simple and convenient to construct and low in construction cost, and the novel prefabricated concrete frame joint connecting technology is worth being promoted vigorously.

The invention relates to an inclined pulling type suspender multi-span continuous beam structure high hollowed-out formwork system and a construction method. The system is a structure support system loaded on a support bent frame of a concrete die plate for supporting the upper floor, and the system is formed through adopting section steel to form a primary and secondary beam steel platform structure and pulling the reinforced concrete framework of the surrounding major structure through a steel pulling rod. Formwork steel platform formed by the inclined structure changes the high hollowed-out structure formwork into a general formwork board which is supported and established on the supporting platform of the inclined pulling type suspender multi-span continuous beam structure.

The invention relates to an assembled reinforced concrete framework structure beam-column joint and a manufacturing method thereof, and belongs to the technical field of building materials and building construction. The assembled reinforced concrete framework structure beam-column joint is composed of a splicing joint (13) of a prefabricated framework column (11) and a prefabricated framework beam (12), and cast-in-place concrete (14). Column longitudinal ribs (131) in the prefabricated framework column (11) extend out of the top of the column to form column top reserved longitudinal ribs (1311). A plurality of joint column hoops (132) are arranged around the column top reserved longitudinal ribs (1311) and bound to the column top reserved longitudinal ribs (1311). The prefabricated framework beam (12) is spliced to the top of the prefabricated framework column (11). A beam bottom longitudinal rib (133) in the prefabricated framework beam (12) extends out towards the splicing head of the prefabricated framework beam (12), and penetrates through the splicing joint (13) to be linearly anchored. According to the assembled reinforced concrete framework structure beam-column joint and the manufacturing method thereof, the design of connection of a framework joint and a framework beam column around the framework joint is modified, linear anchoring of the framework beam bottom longitudinal rib and continuous through anchoring of a framework beam top longitudinal rib are achieved, connection integrity of an assembled reinforced concrete framework structure is enhanced, and the assembled reinforced concrete framework structure can possess better earthquake-resistant ductility.

The invention discloses a method for reinforcing a structure by means of the method of externally attaching a steel-reinforced concrete framework, and belongs to the field of concrete structure reinforcing. The steel-reinforced concrete framework is externally attached to the outer side of an existing reinforced concrete framework structure. A newly-added reinforced concrete beam and column are prefabricated in a whole-casting integrated mode and are connected with an existing reinforced concrete beam and column respectively in a post-tensioning method anchoring prestressed tendon mode. Steel ribs in the newly-added reinforced concrete beam and column are connected together through bolts and angle iron. A gap with the width of 5-10mm is reserved between the newly-added steel-reinforced concrete framework and the existing reinforced concrete framework structure and is sealed by mortar. Ducts need to be reserved in the newly-added reinforced concrete beam and column and the steel ribs in the newly-added steel-reinforced concrete beam and column, so that prestressed tendons penetrate through the steel ribs conveniently. Unbounded prestressed tendons are anchored through an anchorage device. According to the method, the bearing capacity, rigidity, ductility and the like of the structure can be effectively improved, a worker does not need to enter a house in the construction process without removal, the efficient, economical and practical effects can be achieved, and the reinforcing effect is facilitated.

The invention relates to the field of structural engineering, in particular to a fabricated RC frame structure system for arranging buckling-restrained braces (BRB) based on interlayer stiffness demands. The fabricated RC frame structure system comprises a main body structure of a fabricated RC frame, a variable-section BRB structure, and an SMA vibration isolator, wherein the variable-section BRBstructure is the BRB structure, and the section size of a BRB inner core unit is determined according to the set target interlayer stiffness; the SMA vibration isolator comprises SMA intelligent concrete and an SMA bar fabricated self-reset damper adopted by a column base, wherein the SMA intelligent concrete is located in a beam and the column. According to the method for optimizing the interlayer stiffness, the interlayer stiffness of each layer is consistent by changing the size of the inner core section of the BRB; in addition, an SMA material is adopted in the area where the structure isprone to being damaged, thus the structure can self-reset and self-repair when being suffered from seismic action, and the damage forms of the 'strong beam and weak column' and 'the weak layer, especially the bottom layer becoming the weak layer' of the structure are avoided.

The invention relates to the technical field of building construction, in particular to a reinforcement end reinforced large-diameter straight thread connector for a reinforced concrete frame structure of a building and a connecting method thereof. The reinforcement end reinforced large-diameter straight thread connector comprises a screw and a screw sleeve; two ends of the screw are provided with an external straight thread respectively; an internal straight thread matched with the external straight threads on the screw is formed in the screw sleeve; the external straight threads of the screw are screwed with the internal straight thread of the screw sleeve; and the diameters of the internal straight thread and the external straight threads which are matched are 30 to 40 millimeters. The connecting method for the reinforcement end reinforced large-diameter straight thread connector alternately screws the screw and the screw sleeve with the same diameter and the same screwing direction in turn to make the screwing lengths of the screw and the screw sleeve meet the requirements of design and construction. The connector and the connecting method improve the tensile strength of reinforcement, reduce the potential safety hazard, greatly lighten the labor intensity of building constructors, improve the building construction efficiency, and have the advantages of convenient construction, stable quality, obvious economic benefit, convenience for field management, safe production and the like.

The invention discloses a non-prestress self-resetting energy dissipation supporting device provided with a variable friction damper. The non-prestress self-resetting energy dissipation supporting device comprises the variable friction damper, an inner sleeve pipe, a plurality of pre-pull rods arranged in the inner sleeve pipe and an outer sleeve pipe arranged outside the inner sleeve pipe, wherein the variable friction damper comprises an upper friction plate, a middle friction plate and a lower friction plate which are sequentially connected, the contact surface of the upper friction plate and the middle friction plate is an embedded zigzag undulating slope surface, the middle friction plate is connected with the inner sleeve pipe, and the lower friction plate is connected with the outersleeve pipe. The energy dissipation device can dissipate energy under the earthquake action, reduce the interlayer displacement angle and acceleration of a building structure, eliminate or reduce residual deformation and damage of a reinforced concrete frame structure under the earthquake action, effectively avoid obvious plastic deformation of a main body structural member, and meanwhile, due tothe fact that the energy dissipation device is convenient to disassemble and assemble, friction energy consumption devices playing a role in dissipating energy are all in an elastic stage, and the repair cost and difficulty of the structure after an earthquake can be obviously reduced.

The invention discloses a novel buckling-restrained brace-RC frame replaceable connecting joint. The connecting joint comprises a reinforced concrete column, a reinforced concrete beam, a gusset plateand a buckling-restrained brace. The gusset plate connected with the buckling-restrained brace is installed at the end of the reinforced concrete beam, and it is ensured that the gusset plate is notin contact with the reinforced concrete column. The reinforced concrete beam is provided with a yield section with relatively strong deformability. During an earthquake, the buckling-restrained bracetransmits tensile force or pressure to the reinforced concrete beam, and the yield section dissipates earthquake energy through plastic deformation, so that the elastic working state of the reinforcedconcrete beam is ensured. The novel buckling-restrained brace-RC frame replaceable connecting joint is clear in force transferring route and controllable in failure mode, solves the problems that anexisting BRB-RC framework joint is complex in stress, uncertain in failure mode and the like, and further enlarges the application range of a BRB-RC framework structure.

The invention relates to a fabricated floor panel and a manufacturing method thereof. According to the floor panel, a beam needing to be built is a flower basket type beam provided with horizontal steps on the single side or the two sides in the length direction of the flower basket type beam, the beam uses the horizontal steps as a boundary and is divided into an upper beam body and a lower beam body; the floor panel is a fabricated board having light thermal insulation board core, the floor panel is internally provided with a rebar in the length direction of the floor panel, and the two ends of the rebar stretch out of the floor panel and serve as connecting bars; the two ends of the floor panel are installed on the horizontal steps of the beam, the connecting bars, opposite to each other and on the two sides of a middle beam, of the floor panel are connected in a welded mode and formed into a whole with the upper beam body through pouring, and the connecting bar, on one side of an edge beam, of the floor panel is connected with a carrying bar in an upper beam body of the edge beam and formed into a whole with the upper beam body through pouring. Prefabricated building materials can be adopted and connected with the beam to form a whole, the strength of the whole structure of high-rise construction of a rebar concrete frame structure can be improved, and meanwhile the advantages that the assembly type construction efficiency is high and the construction period is short are kept.

The invention discloses an assembled type anchor rod frame beam structure containing an elastic cushion layer and suitable for an expansive soil slope and a construction method thereof. The construction efficiency and quality of an anchor rod frame beam are effectively improved, the material cost of the frame beam is saved, and the comprehensive supporting effect of the anchor rod frame beam structure is improved. The structure comprises a reinforced concrete concave beam prefabricating unit, EPS (polystyrene) elastic cushion layers arranged on two sides of the reinforced concrete concave beamprefabricating unit, and an anchor rod arranged at a joint of a reinforced concrete frame beam. The reinforced concrete frame beam is formed by connecting the reinforced concrete concave beam prefabricated unit, cast-in-place concrete at the joint and bolts. The EPS elastic cushion layers are arranged on two sides of the frame beam. According to the assembled type anchor rod frame beam structure,the construction efficiency and quality of slope supporting engineering are effectively improved, the material cost of the frame beam is reduced, and the supporting effect of the anchor rod frame beam structure and the economic benefit of the construction project are improved.

The invention belongs to the concrete structure reinforcing field and provides a structure reinforcing method in an externally-attached steel-encased assembly type PC frame mode. A steel-encased assembly type PC frame is externally attached to the outside of an original reinforced concrete frame structure, steel plates of steel-encased prefabricated reinforced concrete frame columns wrap columns below lower sections of beams, and holes of pre-stressed tendons are reserved in the steel plates. Beams and columns of a newly-added prefabricated frame are connected through the unbonded pre-stressed tendons and are connected with beams and columns of the original frame respectively in an unbonded pre-stressed tendon mode. The original frame structure is connected with the new frame structure through the unbonded pre-stressed tendons, and by means of the pre-stressing force of the unbonded pre-stressed tendons, pressure and friction generate on the contact portion between the original frame and the new frame, so that the original frame and the new frame are tightly connected together, and bearing capacity, rigidity, ductility and the like of the reinforced concrete structure are effectively improved; workers do not need to enter a house, and relocation is not needed in the construction process, efficient, economical and practical effects are achieved, and the structure reinforcing method is quite beneficial to the reinforcing effect.

The invention discloses a prefabricated assembly-type seismic toughness reinforced concrete frame structure and a construction method. The frame structure is constructed on the basis of concrete and comprises a reinforced concrete column, an anchor rod, a reinforced concrete beam, a pull rod and a damper. According to the prefabricated assembly-type seismic toughness reinforced concrete frame structure, a hole is formed in each of the reinforced concrete column and the reinforced concrete beam, a disc spring group is installed in each hole, the disc spring groups are fixedly connected with beam and column joints through the pull rod and fixedly connected with column and foundation joints through the anchor bolt, densified stirrups or spiral stirrups or exterior steel plates are arranged atthe ends of the reinforced concrete beam and the reinforced concrete column correspondingly, the damper is arranged on the lower side of the beam end, the periphery of the gaps of reserved grooves ofthe reinforced concrete column and a concrete foundation is filled with an elastic scalable material, the ductility of the seismic toughness frame structure is high, the aftershock residual displacement is low, an aftershock main structure basically keeps elastic, and the prefabricated assembly-type seismic toughness reinforced concrete frame structure can be widely used in building structures.

The invention discloses a reinforced concrete frame structure anti-seismic analysis method based on Revit-OpenSEES, and belongs to the technical field of civil engineering. According to the technical scheme, finite element model conversion is carried out from a BIM model of Revit to OpenSEES, and anti-seismic analysis setting and output setting are carried out; the analysis data output by the OpenSEES are grouped, sorted and extracted, and are displayed and output in the form of a graph, a table or a document and the like; according to the concrete and steel bar strain data output by the OpenSEES, earthquake damage secondary analysis is carried out on the structure; key structure earthquake damage information is automatically stored in a Revit structure model; the earthquake damage state is displayed through a three-dimensional view, or virtual roaming is carried out through VR software. The method has the beneficial effects that the integration of common BIM software and a finite element analysis program is realized, the anti-seismic analysis and damage evaluation of the reinforced concrete frame structure directly based on the BIM model are realized, and a solution is provided for the structural anti-seismic analysis to participate in the cooperative work of the BIM.

The invention discloses a method for dismantling and splicing cast-in-place reinforced concrete frame structure building components. The method includes dismantling a frame structure into floor slabs, secondary beams, longitudinal struts and horizontal frames in a main stress direction sequentially from top to bottom; dismantling the floor slabs by marking out dismantling strips along the peripheries of the floor slabs, crushing and removing concrete within the range of the dismantling strips, and cutting off reinforcing steel bars from the middles of the dismantling strips while leaving butts of the reinforcing steel bars on the peripheries of the floor slabs and peripheral beams so as to facilitate connection during splicing; dismantling the secondary beams and the longitudinal struts sequentially in the same way; last, dismantling beams and columns of the horizontal frames along the middle disconnection positions into +-shaped, T-shaped and L-shaped joint units. The components andthe joint units can be obtained by dismantling according to the method and can be spliced into a building frame like modular furniture, and accordingly relocation of buildings is realized.

The invention relates to a reinforced concrete frame joint HDC wire winding reinforcing device and a construction method thereof. The reinforced concrete frame joint HDC wire winding reinforcing device comprises a vertical frame column and a frame beam extending horizontally on the peripheral side of the vertical frame column. A reinforcing area of the reinforcing device comprises a full-height replacement area and a partial replacement area which communicate with each other, and the full-height replacement area is formed by chiseling and penetrating the contact end of the frame beam and the frame column. The partial replacement area is formed by chiseling inwards from the peripheral surface of the frame column to a joint core area in the frame column, vertical steel bars are fixedly connected to connecting lines of midpoints of exposed stirrups of the joint core area, the steel bars are connected into a whole in a winding mode through cold-drawn steel wires, and the full-height replacement area and the partial replacement area are reinforced through HDC spraying, smearing, filling and reinforcing. By arranging the multiple sections of replacement areas, weakening beam ends are reinforced, the number of plastic hinges of the beam end under the action of an earthquake is increased, the redundancy of joint damage is improved, concrete in the core area can be restrained more efficiently by adopting the cold-drawn steel wires and steel bars for wire winding, the hooping effect of the core area is improved, and the restraining effect on the concrete is improved.

The invention relates to a reinforced concrete frame column reinforcing structure and method. The problem that in the prior art, a frame column serving as a main bearing component of a house is low instability and shock resistance is solved. According to the reinforced concrete frame column reinforcing structure and method, the reinforced concrete frame column reinforcing structure comprises longitudinal bars penetrating through a frame column, inner stirrups, outer stirrups, a concrete filling area poured in the frame column and an outer wall plate attached to the outer portion of the concrete filling area, wherein the inner stirrups and the outer stirrups are connected to the outer portions of the longitudinal bars in a winding mode. The reinforced concrete frame column reinforcing structure further comprises a built-in bailey frame. According to the reinforced concrete frame column reinforcing structure and method, the frame column integrally uses the X-shaped crossed built-in bailey frame as a core shaft, the longitudinal bars penetrate through the frame column along the axis of the frame column, the inner stirrups and the outer stirrups are connected to the longitudinal barsand the X-shaped crossed built-in bailey frame in a winding mode, the built-in bailey frame is wrapped by the outer bailey frame, and therefore the two bailey frames form a stable triangular structure; and in addition, concrete pouring is conducted, and therefore the supporting force, the bending resistance and the pressure resistance of the frame column are all greatly improved.

The invention discloses an assembly-type ardealite-concrete combined wallboard and preparation and assembly methods. The assembly-type ardealite-concrete combined wallboard comprises a concrete frameand a precast concrete ground beam; frame beam steel bars are buried in a top beam and a bottom beam of the concrete frame correspondingly, frame column steel bars are buried in two column beams of the concrete frame correspondingly, the bottom ends of the frame column steel bars further stretch out of the bottom beam of the concrete frame, and the concrete frame is filled with an ardealite-basedcomposite gel filler; a groove with the inner surface being a rough surface is formed in the precast concrete ground beam, and steel cylinders are pre-buried in the groove; the frame column steel barsstretching out of the bottom beam of the concrete frame can be inserted into the pre-buried steel cylinders arranged corresponding to the frame column steel bars, and at the moment, part of the bottom beam of the concrete frame sinks into the groove; and the groove is filled up with cast-in-place self-compacting concrete after part of the bottom beam of the concrete frame sinks into the groove. The assembly-type ardealite-concrete combined wallboard and the preparation and assembly methods have the characteristics that vertical connection is stable, the overall anti-seismic property is good,construction is convenient, and standardization is easy.