131results about How to "Sufficient bearing capacity" patented technology

The invention relates to a precast concrete wall body and belongs to the technical field of precast rebar concrete structural members. The precast concrete wall body comprises a first precast concrete wall slab and a second precast concrete wall slab which are in parallel; the first precast concrete wall slab adopts wet connection and the second precast concrete wall slab adopts dry connection. According to the precast concrete wall body, the industrial level of a building structure is improved, the stress performance is improved, the resources are saved and the precast concrete wall body can be applied to various wall body bearing structures.

The invention relates to a method for quickly repairing and reinforcing a post-earthquake damaged pier. A member of the post-earthquake damaged pier is not required to be straightened. The method comprises the following steps of (1), cleaning, (2), gouging, (3) injecting glue, (4), embedding steel bars, (5), pouring, and (6), winding cloth, wherein in Step (1), loose concrete in a plastic hinge area is cleaned, and a bulged steel bar is straightened rather than replaced; in Step (2), steel bar embedding grooves are formed in a near surface, namely a protective layer of the pier, and fragments in the grooves and the surface of the concrete at the peripheries of the grooves are cleaned; in Step (3), the steel bar embedding glue is injected into the steel bar embedding grooves; in Step (4), fiber steel bars are washed cleanly by industrial alcohol, and mounted in the steel bar embedding grooves after dried, and the external surfaces of the fiber steel bars are covered with the steel bar embedding glue and floated; in Step (5), a formwork is erected after the steel bar embedding glue is solidified, and repair concrete of the plastic hinge area is poured; and in Step (6), after the repair concrete is solidified, the formwork is dismounted, and wound with three layers of fiber cloth, and the winding height is kept consistent with the steel bar embedding height. The method can quickly repair the damaged pier, and allow the repaired and reinforced pier to have sufficient bearing capacity.

The invention provides a prefabricated ECC-RC combination beam column joint component, wherein ECC refers to engineered cementitious composites, and RC refers to reinforced concrete. The prefabricated ECC-RC combination beam column joint component comprises a joint, an outward-extending column and an outward-extending beam, wherein the joint, the outward-extending beam and the outward-extending column are respectively composed of an ECC material, longitudinal bars and stirrups, the outward-extending length of the outward-extending column is about 1-2 times of the height of the column section, the outward-extending length of the outward-extending beam is about 1-2 times of the height of the beam section, H-shaped steel is embedded in the end of the outward-extending beam and the end of the outward-extending column, the embedded depth ranges from 10 cm to 20 cm, the H-shaped steel and the longitudinal bars extend out of the ends for 10-20 cm, the embedded part of the H-shaped steel is welded to the longitudinal bars, the embedded H-shaped steel of a prefabricated RC beam, the embedded H-shaped steel of a prefabricated RC column and the embedded H-shaped steel of the prefabricated ECC joint are connected through high-strength bolts, and the longitudinal bars are connected through a straight thread sleeve. According to the prefabricated ECC-RC combination beam column joint component, the prefabricated beam column joint component formed by pouring the steel bar reinforced ECC material is applied to an assembly type frame structure, compared with a general reinforced concrete joint component, the ductility and the anti-seismic property of the structure are improved remarkably, the number of joint stirrups in use is reduced substantially, pouring is facilitated, and construction is convenient; besides, the high tenacity of the ECC material can reduce residual deformation of the structure after an earthquake, and therefore post-earthquake repair expenses are reduced.

The invention provides an LCD device, which comprises a liquid crystal panel and a backlight module, wherein the backlight module is located below the liquid crystal panel and comprises a rubber frame, a light guide plate, a light source and a steel frame; the rubber frame bears the liquid crystal panel, and comprises a horizontal frame edge and a vertical frame edge; the horizontal frame edge comprises a main body and a light-transmitting part; the light-transmitting part is connected with the main body and bears the liquid crystal panel together with the main body; the vertical frame edge is connected with the horizontal frame edge to form an accommodation space. The light guide plate is located below the liquid crystal panel and accommodated in the rubber frame. The light source is located on one side of the light guide plate, and is arranged on the vertical frame edge. The steel frame is coated on the liquid crystal panel, the rubber frame and the light guide plate, wherein light emitted by the light source penetrates the light guide plate to pass through the light-transmitting part. By adopting the invention, the bearing area of the rubber frame is not reduced, the slim border effect can be greatly achieved, the problem of the dark zone caused by visual angle enlargement is avoided, and the visual taste is improved.

The invention discloses an elastic support foil hydrodynamic gas bearing with inherent structure pre-wedge space. The elastic support foil hydrodynamic gas bearing comprises a bearing body and a rotary shaft located in the bearing body. An elastic support element is arranged on the inner side of the bearing body. Top-layer flat foil is arranged between the elastic support element and the rotary shaft. A smooth shaft segment is arranged on the axial middle area of the surface of the rotary shaft. The positions, located on the two sides of the smooth shaft segment, of the surface of the rotary shaft are each provided with a line of inclined grooves. The inner side of the top-layer flat foil surrounds and wraps the rotary shaft, a pre-clearance is formed between the top-layer flat foil and the rotary shaft, meanwhile, the elastic support element and one end of the top-layer flat foil are fixed to the same position of the bearing body, and the other end of the top-layer flat foil is free.The elastic support foil hydrodynamic gas bearing has the beneficial effects that a hydrodynamic gas film can be formed at the relatively-low rotating speed with small foil deformation, the rotary shaft and the bearing body are in contact uniformly in the start stage and the stop stage, the contact friction time between the rotary shaft and the bearing body is shortened, wear between the rotary shaft and the bearing body is reduced, and the operation stability and reliability of a system are improved.

The invention relates to a prestressed prefabricated ECC-RC combination beam column joint component which comprises a prestressed rib and a joint with a bracket. The joint with the bracket is composed of an ECC material, longitudinal bars and stirrups. The joint with the bracket comprises an outward-extending column, wherein the length of the outward-extending column is about 1-2 times of the height of the column section. A hole channel is required to be reserved between the joint and a prefabricated RC beam connected with the joint. The prefabricated ECC joint is connected with the prefabricated RC beam through the post-tensioned prestressed rib which penetrates through the hole channel. H-shaped steel is embedded in the end of the outward-extending column and the end of a prefabricated RC column, wherein the embedded depth and the outward-extending length both range from 10 cm to 15 cm, the longitudinal bars at the end of the outward-extending column and the end of the prefabricated RC column respectively extend outwards by 10-15 cm, the embedded part of the H-shaped steel is welded to the longitudinal bars, the embedded H-shaped steel of the prefabricated RC column and the embedded H-shaped steel of the prefabricated joint are connected through high-strength bolts, and the longitudinal bars are connected through a straight thread sleeve. According to the prestressed prefabricated ECC-RC combination beam column joint component, the prestressed prefabricated joint component formed by pouring of the steel bar reinforced ECC material is applied to an assembly type frame structure, so that the ductility and the anti-seismic property of the structure are improved remarkably, the number of joint stirrups in use is reduced substantially, pouring is facilitated, and construction is convenient; since prestress is used as an assembly means, residual deformation of the structure after an earthquake can be reduced, the restorable function is achieved, and post-earthquake repair expenses are reduced.

The invention discloses a cold in-place recycled emulsified bitumen mixture and a cold in-place recycled pavement. The emulsified bitumen mixture comprises the following raw materials by mass: 2 to 3 parts of a premixed cementing material, 10 to 20 parts of broken stone, 100 parts of a RAP reclaimed material, 2 to 2.5 parts of emulsified bitumen, 1 to 1.5 parts of an old bitumen activator and 1 to 1.5 parts of waterborne polyurethane epoxy resin. According to the cold in-place recycled emulsified bitumen mixture in the invention, waterborne polyurethane epoxy resin is added into the RAP reclaimed material and the old bitumen activator, so the low-temperature flexibility and high-temperature stability of the cold in-place recycled emulsified bitumen mixture are greatly improved; the broken stone and the premixed cementing material are added to improve the mechanical strength of the mixture and provide the mixture with sufficient bearing capacity; and latex emulsion is added, so the early strength of the cold in-place recycled emulsified bitumen mixture is greatly improved.

The invention discloses a light-guide concrete-based photovoltaic solar structure unit and a pavement construction method. The photovoltaic solar structure unit comprises a concrete substrate, a light converging part, an optical fiber, a protective cover and a photovoltaic solar panel, wherein the protective cover is located at the bottom part of the concrete substrate; a closed hollow cavity for placing the photovoltaic solar panel is formed between the protective cover and the concrete substrate; the light converging part is located at the top part of the concrete substrate; one end of the optical fiber is connected with the light converging part; and the other end passes through the protective cover and points at the photovoltaic solar panel. The pavement construction method comprises the following steps: (S1) prefabricating a plurality of photovoltaic solar structure units; and (S2) splicing the photovoltaic solar structure units into an overall pavement structure in order. The light-guide concrete-based photovoltaic solar structure unit has the advantages of good generating performance, high mechanical property, high construction efficiency, wide application prospect and the like.

The invention discloses an energy consumption type variable-rigidity anti-seismic bridge check block based on a magneto-rheological body, the check block comprises a magneto-rheological vibration isolation device and a variable-rigidity rectangular cavity, and the magneto-rheological vibration isolation device is installed on the outer surface of the variable-rigidity rectangular cavity; the checkblock is small in initial rigidity, can effectively reduce damage caused by rigid collision between a beam body and the check block by means of a special triple spring and a magneto-rheological damping system in the magneto-rheological vibration isolation device when subjected to earthquake impact, has the multi-stage energy consumption characteristic, can consume energy stage by stage, and improves the anti-seismic property of a bridge. The negative poisson ratio module is installed in the variable-rigidity rectangular cavity and filled with the magneto-rheological elastomer, when the earthquake load effect changes, the internal structure of the variable-rigidity rectangular cavity is compressed along with pushing of the piston rod, the lateral rigidity of the check block is continuouslyenhanced, and the rigidity requirements under the earthquake load effects of different strengths can be met. The check block has good adaptability and enough bearing capacity, and is an ideal bridgeanti-seismic check block.

The invention discloses an anti-seismic building structure provided with a steel frame and crossed central support with link beams. The anti-seismic building structure comprises rectangular concrete filled steel tubular columns, steel beams, the link beams and support rods. The strength grade of the rectangular concrete filled steel tubular columns, the steel beams, the link beams and the support rods is gradually decreased sequentially. The support rods, the link beams, the steel beams and the rectangular concrete filled steel tubular columns yield sequentially under side force. According to the anti-seismic building structure, an industrial production line can be adopted for production, fabricated construction is conducted in site, the requirements for green construction and index formation are met, the construction technological level and construction quality can be improved easily, development of steel structure buildings is promoted, the requirements for the overall anti-seismic property and the lateral displacement resistance of high earthquake intensity regions are met, and the anti-seismic building structure has the advantages of being sufficient in bearing capacity, rigidity and anti-seismic property, and the like.

The invention discloses a construction method for treating a vehicle jump at a bridge head in a highway. The construction method comprises the steps of: subgrade treatment, base treatment and pavement construction, and concretely comprises the following steps of: A, adopting rammed earth or a light body material to tamp in a layering way at a abutment back, wherein the compaction depth of each layer does not exceed 20cm; filling each layer by 2-3m and tamping the level top surface of a roadbed by using a strong rammer to form a stable abutment back roadbed; B, fabricating a reinforced cement concrete slab which is equal to a bridge in width; paving the reinforced cement concrete slab and a base material on the abutment back roadbed in the layering way, so as to obtain a rigid-flexible intermediate layer with the reinforced cement concrete slab; and C, carrying out the pavement construction on the rigid- flexible intermediate layer on the bridge floor. The method is simple in construction method, low in cost, short in period, stable in foundation and long in service life, and the problem of the vehicle jump at the bridge head is effectively solved.

The invention discloses a novel assembled joint applicable to a monolayer triangular space grid structure. The novel assembled joint is mainly composed of five parts, namely a center joint, connecting sleeves, high-strength bolts, upper and lower cover plates and a center bolt. The center joint is composed of a center circular ring and six connecting arms in connection. The connecting sleeves are machined from steel tubes. Bolt holes are arranged in corresponding positions of the center joint, the sleeves and road pieces. During assembly, one end of each sleeve is sleeved with one connecting arm while the other end of the same is sleeved with one rectangular steel tube, the sleeves, the connecting arms and the rectangular steel tubes are connected through the high-strength bolts, bending moment and axial force of the rod pieces are transmitted through the bolts and friction and mechanical squeezing among the steel tubes, the sleeves, the connecting arms and the center ring, and the triangular space grid structure joint is formed by all the connections. The assembled joint is wide in application range, convenient for industrialized batch production, good in assembling capacity, convenient to construct, high in construction and assembly quality, capable of meeting the requirement of the monolayer space grid structure on joint bearing capacity and rigidity and broad in application prospect.

The invention discloses a quasi-zero stiffness vibration isolator with low frequency broadband characteristics. The quasi-zero stiffness vibration isolator comprises a negative stiffness mechanism anda positive stiffness mechanism, wherein the negative stiffness mechanism comprises an upper fixing magnetic ring, a lower fixing magnetic ring and a middle free magnetic ring; and the free magnetic ring is mounted on a middle shaft (2), the middle shaft (2) is connected with the positive stiffness mechanism, and the positive stiffness mechanism is an artificial muscle structure. According to thequasi-zero stiffness vibration isolator, the negative-rigidity three-magnet ring structure is innovatively designed (which is used for fixing the upper and the lower magnetic rings, an inner magneticring is fixed to the middle shaft to move along with the shaft), the positive stiffness is easy to control by utilizing a platform carrying PAM, the positive and negative structures can be adaptivelyadjusted along with a vibration isolation object, the engineering practicability is equipped with an upper and lower connecting mechanism, and a spherical hinge structure at the upper end is further broaden the using field and the service life of the vibration isolator.

The invention relates to a gas high speed electric spindle. The electric spindle performs precise processing on magnalium through utilizing a high speed cutting principle. The gas high speed electric spindle is characterized in that a spindle main body of water circulating cooling, an air bearing and a thrust bearing of water circulating cooling, a rotor core which can automatically disassemble a cutter, and a cylinder which can automatically disassemble a cutter device are arranged on the electric spindle, wherein the integral air bearing is mounted in the spindle main body; the rotor core is arranged between the air bearing and a stator; and a cutter pushing mechanism in the cylinder is arranged in the rotor core and does not rotate along with the rotor core when the rotor core rotates, the laterality of the spindle during rotation is reduced, the service life of the spindle is guaranteed, the processing difficulty of the spindle is reduced, and the production is facilitated.

The invention relates to a device which is used to free a vehicle that has become stuck in terrain or to reduce the risk of same, through the use of an additional tread which is disposed parallel to that of each wheel of the vehicle. The additional tread can take the form of an air chamber (2 or 10a and 10b) which may or may not be covered with a tire (11) or of a band comprising different coupling profiles (13, 14 or 15). Said tread is mounted to an anti-sink rim essentially comprising a conical profile (1.2) and a flange (1.1) which is centered in relation to, and applied against the outer side of the rim of the vehicle wheel using at least three bolts having special heads (6), which are inserted and coupled in respective openings in the flange and rim. The diameter of the system is smaller than that of the wheel in order to facilitate mounting and to reduce the risk of interference with the body of the vehicle. The conical shape of the rim profile (1.2) lends natural stiffness to the system and, when not in use, enables same to be easily stacked in order to minimize the storage space required.

The invention discloses a large section inclined tunnel type arc seat structure for an arch bridge and a construction method thereof. The large section inclined tunnel type arc seat structure comprises an arc seat body, the arc seat body comprises a tunnel chamber dug on the subgrade surface in the inclined direction and a backfill layer arranged in the tunnel chamber, the tunnel chamber comprisesa tunnel body section and a tunnel opening section, the tunnel body section and the tunnel opening section are arranged in the longitudinal direction, the tunnel body section is of a single-layer lining structure, the tunnel opening section is of a double-layer lining structure, and a tunnel opening protective shed is arranged on the outer wall of the tunnel opening section. According to the large section inclined tunnel type arc seat structure for the arch bridge and the construction method thereof, large excavation and high slope of the arc set foundation are avoided, construction risks andpotential operational risks in the construction process are lowered, and meanwhile environmental protective quality is improved.

The invention discloses an efficient mounting method for waterproof plate coating-free sealant, and belongs to the field of waterproof plates. According to the efficient mounting method for the waterproof plate coating-free sealant, during mounting, two adjacent waterproof plates are extruded to enable a plurality of top bag dispersed bundles to pierce a gas-liquid bag, on one hand, the sealant inthe gas-liquid bag can gradually overflow, a waterproof glue layer is formed between the two waterproof plates, waterproof sealing between the two waterproof plates is achieved, compared with the prior art that sealant is manually smeared, the workload of workers is remarkably reduced, and then the mounting efficiency is improved; and on the other hand, inert gas in the double-layer gas-liquid bag overflows as well, the air convection speed of the overflowing sealant can be increased, the airing speed of the sealant is remarkably increased, the mounting efficiency is further improved, meanwhile, after the gas-liquid bag is pierced, the constraint effect of pre-dispersed bundles is relieved, the pre-dispersed bundles are dispersed and serve as keels of the waterproof glue layer, and the waterproof glue layer is higher in strength and not easily damaged.

The invention provides a convex and concave curtain wall plate which comprises a plate body and a convex clamping block arranged on the surface of the plate body. The plate body and the clamping blockare formed into a whole through the same material. According to the convex and concave curtain wall plate, the convex clamping block structure which is formed on the surface of the plate body and formed integrally serves as a connection part between the plate and a hanging part connection part. The connection part does not occupy the internal space of the plate body and has a thickening functionon the plate body, and therefore the formed connection part has higher mechanical strength. In addition, the clamping block on the surface of the convex and concave curtain wall plate is in surface contact with the hanging part connection part, the contact area is large, thus, the hanging part connection part can provide enough bearing capacity for the plate, and the plate can be hung firmly and reliably.

The invention discloses a device for batching a gray fabric of a loom. The device is characterized in that the device includes a machine base (2) arranged outside the loom, a batching mechanism arranged on the machine base (2) and a transmission mechanism for connecting the loom (1) with a batching mechanism, the transmission mechanism is a multi-stage chain transmission mechanism, and the transmission mechanism is connected with an original loom batching taker (7) on the loom. The device for batching the gray fabric of the loom has the advantages of simple structure, convenient, safe and reliable operation, low equipment failure rate and low cost; a driving shaft is capable of producing a batch, thereby reducing the number of fittings during the post processing of finished products.

The invention discloses a repairing method for a coal mine small gangue hill. The repairing method includes the steps that slope cutting shaping is conducted on the gangue hill, the slope grade valueis adjusted, slope top platform finishing is conducted on the top of the gangue hill, and multistage sloping is conducted on the slope of the gangue hill; reinforcement hooks are embedded in the positions, on a second-stage step and above the second-stage step, on the slope surface; a soil blocking wall is arranged on the surface of the slope of the first-stage step on the slope of the gangue hill, and antiskid piles are arranged at the positions, on the second-stage step of the slope of the gangue hill and above the second-stage step, of a platform; and stones are laid on the slope platform.By means of the repairing method, a manual pond is excavated in the flat ground on the front edge of the gangue hill so that the manual pond and the gangue hill can be ecologically repaired to form the good ecological cycle, and natural sludge substrates in the pond are used as ecological repairing nutriments to achieve ecological repairing of the gangue hill. Meanwhile, after the manual pond is built, a water source can be provided for ecological repairing of the gangue hill, and the manual pond can also serve as a fire extinguishing water source place for the gangue hill or a mine.

The present invention discloses a dental implant which allows an immediate masticatory function just after being implanted in a bone structure, does not need a secondary operation, and can be effectively applied even in thin and short alveolar bone. The dental implant comprises a body portion to be inserted in the bone structure and a mounting portion integrally formed on an upper portion of the body portion, the body portion including a thin and short core, screw blades formed along an outer peripheral surface of the core in the shape of a wide and deep screw, and a connecting portion formed in the shape of a plurality of holes and grooves vertically passing through the circumference thereof and capable of containing bone growth factors. An outer circumference of a proximal portion, an uppermost portion of the body portion, is smaller than a maximum diameter of the body portion and the mounting portion is smaller than the maximum diameter of the body portion, and the mounting portion has a gum adhering portion to protect bone tissues and a post to be mounted with an abutment or a prosthesis thereon.

The invention relates to a connecting structure for existing buildings and a construction method and belongs to the technical field of reinforcement and reconstruction. The connecting structure comprises the existing building A, the existing building B, frame columns, outer wrapping steel plates, brackets, main steel beams and sliding rubber supports. The outer wrapping steel plates are arranged on the original frame columns. The outer wrapping steel plates and the frame columns are connected through chemical anchor bolts. The brackets are welded to the steel plates. It should be ensured that the elevations of the upper surfaces of the brackets in each layer are consistent. The additionally arranged main steel beams are seated on the brackets. The main steel beams are joist steel, and the sliding rubber supports serve as joints. According to the connecting structure, the sliding rubber supports are adopted as the connecting joints between two adjacent buildings, and therefore the problem that two buildings with different inherent frequencies and amplitudes are prone to structural damage when receiving an earthquake or other strong vibration after structural connection is solved.

A kind of open-type cylindrical foundation and its installation process, comprising a cylindrical foundation body with a closed upper end and an open lower end, the top cover of which is closed at the upper end of the cylindrical foundation body is provided with a water pumping hole; an inner cylinder is set inside the cylindrical foundation body The inner cylinder wall is a vertical through-type structure. Its installation steps: 1. The operation ship sails to the construction site and locates; 2. Lifts the cylindrical foundation and positioning piles to the seabed; 3. Measures the horizontal condition of the cylinder top and adjusts the level; Under the mud surface; 5. Press the pile into the mud to a certain depth, and loosen the hydraulic transmission fastening device; 6. Start the pump to pump water to form a negative pressure, and the cylindrical foundation vertically penetrates into the mud surface along the pile; 7. Observe the data acquisition instrument until the cylindrical foundation penetrates to the design depth; 8. Take back the positioning pile and complete the installation. The invention can vertically penetrate into the soil layer to provide a stable working platform for production facilities; it can provide more bearing capacity; the installation process is simple and easy to operate.

The invention relates to a forming method of a composite foundation pile. The forming method comprises the steps that (1) the position of the foundation pile is selected; (2) a soil body is mixed withcement slurry to form cement soil by a method of spraying the cement slurry and stirring while drilling or a method of spraying the cement slurry and stirring after the completion of drilling at theselected position; (3) a precast pile is lowered into the cement soil; and (4) after predetermined curing time, the cement slurry is injected again into a gap between the outer surface of the precastpile and the cement soil. The forming method enables a shrinkage joint generated due to shrinkage in the solidification process of the cement soil to be filled, ensures reliable contact between the cement soil and the precast pile, or enables the cement soil to be in reliable contact with the precast pile through the subsequently poured cement slurry, thereby ensuring that the composite foundationpile has sufficient bearing capacity and pull-out resistance, and eliminating the engineering quality hidden danger caused by the shrinkage joint. The invention further relates to a grouting member of the composite foundation pile.

The invention discloses a caisson with pile holes, and relates to a caisson with pile holes and a mounting method of the caisson. The caisson comprises a caisson body, the caisson body comprises a peripheral wall, an inner wall and compartments partitioned by the inner wall, and the caisson is characterized in that the vertical pile holes are reserved in the peripheral wall and the inner wall of the caisson body, and the pile holes penetrate through the peripheral wall and the inner wall of the caisson body; connecting holes are reserved in the inner walls of the pile holes in the caisson body; and steel piles are arranged in the pile holes, and the steel piles in the different pile holes are connected in the mode that steel beams penetrate through the connecting holes. The caisson has thepositive effects that construction is convenient, the cost is saved, the construction period is shortened, and safety and reliability are achieved.

The invention discloses an automatic online film pasting machine for profiles. The automatic online film pasting machine for the profiles is installed at the output end of a traction machine, and comprises a supporting frame, and the supporting frame is installed at the output end of the traction machine and used for allowing the profiles to penetrate through. A discharging device, a pressure roller device and a limiting roller device are fixed to the supporting frame. The automatic online film pasting machine for the profiles further comprises a rotating device which is fixed to one side of the supporting frame. The discharging device, the pressure roller device and the limiting roller device are arranged on the rotating device and sequentially distributed in the profile forwarding direction, and the discharging device, the pressure roller device and the limiting roller device are driven to rotate at the same time through rotation of the rotating device. The horizontal film pasting mode or the vertical film pasting mode can be achieved through switching according to actual needs, and the whole process is stable, reliable, and easy and convenient to implement.

A dental implant of the invention allows an immediate masticatory function just after being implanted in a bone structure, does not need a secondary operation, and can be effectively applied even in thin and short alveolar bone. The dental implant comprises a body portion to be inserted in the bone structure and a mounting portion integrally formed on the body portion, the body portion including a thin and short core, screw blades formed along an outer peripheral surface of the core in the shape of a wide and deep screw, and a connecting portion formed in the shape of a plurality of vertical holes and grooves and capable of containing bone growth factors. The mounting portion has a gum adhering portion to protect bone tissues and a post to be mounted with an abutment or a prosthesis thereon.

The invention provides a double-layer PC plate type conversion layer of a post-poured upper-portion structure and a construction method. The double-layer PC plate type conversion layer comprises a first-layer RC conversion plate and a second-layer RC conversion plate, and the first-layer RC conversion plate and the second-layer RC conversion plate are supported through frame columns to form a hollow layer. The thickness of the first-layer RC conversion plate is smaller than that of the second-layer RC conversion plate, and hidden beams are arranged in the second-layer RC conversion plate. A post-poured shearing wall, an energy consumption shearing wall and a friction damp mechanism are mounted in the hollow layer. A certain quantity of steel bars are configured in the upper and lower plates of the conversion layer, an energy consumption device is arranged between layers, thus the mass of the conversion layer plates is decreased, and the conversion layer plates have the enough bearing capacity to meet the upper-portion post-poured building structure. Through arrangement of interlayer special components, the structural integrity is reinforced, the structural seismic performance is reinforced, and thus the upper-down adjacent layers of the conversion layer do not become the anti-seismic weak layers.

The invention relates to a plug-in prefabricated beam-column frame structure. The plug-in prefabricated beam-column frame structure comprises a column body with a prefabricated groove and a beam bodywith a prefabricated boss, the boss is inserted into the groove and then spliced with the groove, the groove is provided with first bolt holes, the boss is provided with second bolt holes, bolts penetrate the first bolt holes and the second bolt holes to tightly lock the column body and the beam body through nuts, and concrete is poured at a cast-in-situ area reserved at the spliced joint of the boss and the groove. The invention further relates to a prefabricating method of the plug-in prefabricated beam-column frame structure. The plug-in prefabricated beam-column frame structure is simple and reasonable, convenient to prefabricate, stable and reliable in connection and enough in bearing capacity and resistance to bending, can meet the requirements of strong joints and weak members, andhas the bearing capacity equal to cast-in-situ joints, thereby being widely applicable and promising in application prospect.