21results about How to "Improve collapse resistance" patented technology

The full-spiral stirrup rectangular stand column is formed by jointly pouring a concrete rectangular frame column, a steel reinforcement framework and concrete, the steel reinforcement framework comprises longitudinal bars, large spiral stirrups, small circular spiral stirrups and tie bars, the large spiral stirrups are arranged on the inner side face of the concrete rectangular frame column in an attached mode, and the small circular spiral stirrups are arranged on the inner side face of the concrete rectangular frame column in an attached mode. The longitudinal bars are evenly arranged along the periphery of the rectangular section of the concrete rectangular frame column and connected with the inner edge peripheries of the large spiral stirrups and the inner edge peripheries of the small circular spiral stirrups respectively, and the tie bars are located between the small circular spiral stirrups and connected between the two opposite longitudinal bars. The structure breaks through the limitation that a traditional spiral stirrup is only suitable for a circular stand column, overcomes the defect that the spiral stirrup is applied to a rectangular stand column, and enables concrete at four corner points of the stand column to fully exert the restraining effect. The constraint effect of the spiral stirrups on concrete is fully exerted, the bearing capacity and ductility of the stand column are improved, mechanical automatic rolling forming can be fully utilized, the labor intensity and dependence on manpower are reduced, the accuracy of steel bar engineering and the quality and safety of the structure are improved, the industrialization degree is high, and good economic benefits are achieved.

The invention discloses a bone cement composite material with collapse resistance and a preparation method thereof, and belongs to the technical field of biomedical materials. The composite material comprises a solid phase part and a liquid phase part, the liquid phase part and the solid phase part are mixed according to the liquid-solid ratio of 0.35 mL / g to 0.6 mL / g; the solid phase part is composed of calcium sulfate powder and calcium phosphate powder, and the mass ratio of the calcium sulfate powder to the calcium phosphate powder is 85: 15; the liquid phase part is selected from carboxymethyl chitosan or a combination of carboxymethyl chitosan and sodium alginate. The bone cement composite material prepared by the preparation method disclosed by the invention has good biocompatibility; due to a gel network formed by carboxymethyl chitosan and sodium alginate, the compressive strength of the bone cement is remarkably improved, and the collapse resistance and injectable performance are excellent; meanwhile, the bone cement composite material promotes the attachment and proliferation of osteoblasts, and can induce osteogenic differentiation in vitro.

This invention relates to the field of seismic resistance technology for spatial frame structures, and discloses a method for determining the energy dissipation mechanism of a steel-concrete composite column-composite beam spatial frame. The energy dissipation mechanism includes steel beams, steel-concrete composite columns, and reinforced concrete slabs. The steel beams are welded and fixed to the steel-concrete composite columns via reinforcing rings, and the steel beams are fixedly connected to the reinforced concrete slabs via studs. Tie bars are provided at the ends of the steel-concrete composite columns. The ratio of the flexural bearing capacity of the steel beams to that of the steel-concrete composite columns is within the range of 0.42 to 1.05. By introducing the ductile damage parameter of the steel, combined with the inter-story drift angle, cumulative energy dissipation, beam-column energy dissipation ratio curve, and finite element calculation results of stiffness damage of the spatial frame, the energy dissipation characteristics and energy dissipation mechanism type of the structure are determined. This invention aims to solve the technical problems in the prior art where the steel-concrete composite columns do not form sufficient compression-bending hinges for energy dissipation during seismic resistance, easily leading to collapse, and the technical problems of using beam energy dissipation mechanisms in seismic design while rarely considering column energy dissipation.

This invention discloses an anti-burning foam fire extinguishing agent for lithium batteries and its preparation method, relating to the field of fire extinguishing agent technology. The anti-burning foam fire extinguishing agent for lithium batteries prepared by this invention mainly comprises a foaming agent system, a foam stabilizer, and a heat-absorbing material. The foaming agent system contains sodium perfluorocrown ether sulfonate, the foam stabilizer is modified silica, and the heat-absorbing material contains modified microcapsules. The anti-burning foam fire extinguishing agent for lithium batteries prepared by this invention exhibits good foam stability and fire extinguishing performance.

The utility model relates to the technical field of house building construction, and discloses a stable house building carrying frame which comprises an anti-collapse device and a carrying frame body, the anti-collapse device comprises a plurality of supporting plates, a plurality of inverted cones are fixedly arranged at the lower ends of the supporting plates, and the carrying frame body is movably arranged at the upper end of the anti-collapse device. The carrying frame body comprises a plurality of square fixing frames, a plurality of fan-shaped fixing frames, a plurality of first stand columns and a plurality of second stand columns, the horizontal lines of two square fixing frames in the multiple square fixing frames are flush to form a group, and a plurality of square supporting frames are fixedly arranged in the middle of each group. One ends of two fan-shaped fixing frames in the plurality of fan-shaped fixing frames are fixedly arranged into one group, and a plurality of arc-shaped frames are fixedly arranged at the rear end of each group. According to the utility model, the appearance of the device can be adjusted according to the radian of a building, and collapse can be prevented during construction on soft soil.

The invention relates to a masonry structure lintel crack reinforced through steel plate wedges and angle steel supports and a construction method thereof. The masonry structure lintel crack reinforced through the steel plate wedges and the angle steel supports comprises the angle steel supports, the steel plate wedges and batten plates. The angle steel supports are arranged on the lower portion of a masonry structure lintel crack and symmetrically arranged on the two sides of the lower portion of an original structure lintel. The steel plate wedge is composed of a wedge opening and a wedge tail, and the steel plate wedge is symmetrically driven into the deep position of the crack from the two sides of the lintel. The batten plate is tightly attached to the angle steel bracket and is welded; after the angle steel supports, the steel plate wedges and the batten plates are all installed, cement polymerization grouting liquid is poured into the cracks. The steel plate wedges and the angle steel brackets are adopted to reinforce lintel cracks of the masonry structure, tensile stress generated by pressure grouting reinforcement can be borne, the ductility of the structure can be improved, and the anti-collapse capacity of the structure can be enhanced.

The present invention discloses a self-resetting steel plate shear wall building structure, comprising a bottom foundation, a floor frame arranged on the bottom foundation, a self-resetting steel plate shear wall lateral resistance unit, and a first connector for connecting the self-resetting steel plate shear wall lateral resistance unit and a floor slab; the self-resetting steel plate shear wall lateral resistance unit comprises a steel plate shear wall, a second column component and a second beam component; the self-resetting steel plate shear wall lateral resistance unit is symmetrically arranged in the floor frame; the floor slab is rigidly connected to the floor frame and the second beam component, and a first gap is arranged between the floor slab and the second column component; the first connector is connected to the bottom of the floor slab, and the two ends of the first connector are respectively connected to the second beam component and the first beam component of the floor frame. When subjected to an earthquake, the floor slab works in coordination with the floor frame and the first connector at the bottom of the floor slab, which can avoid cracking of the floor slab or damage of the first connector, thereby effectively, reasonably and damage-freely transmitting the horizontal inertial force to the self-resetting steel plate shear wall lateral resistance unit.

The present invention discloses a method for preparing a light matrix fertilizer for cultivating indocalamus container seedlings. The matrix fertilizer raw materials are calculated by weight and include: 10-15 parts of peat soil, 10-15 parts of forest surface soil, 40-50 parts of fermented bamboo residues, 10-20 parts of mushroom stick waste, 5-10 parts of manure, 5-10 parts of coal slag powder, 10-15 parts of expanded perlite particles, and 5-10 parts of cross-linked microcrystalline cellulose super absorbent resin. The light matrix fertilizer raw materials of the present invention are simple to prepare and low in cost. The indocalamus ramet container seedlings cultivated by using the matrix have high survival rate and new bamboo germination rate, strong new whip germination ability, and vigorous plant growth. At the same time, the seedling culture matrix has the characteristics of loose texture, light weight, good water retention and excellent anti-collapse performance, which is convenient for seedling transportation and mountain planting.

The utility model discloses an anti-tipping cutting tool, which relates to the technical field of cutting tools, and comprises a milling cutter handle and a milling cutter head, the bottom end of the milling cutter head is fixedly connected with the milling cutter handle, the milling cutter handle is a tungsten steel base material cutter handle, the top end of the milling cutter head is provided with a milling cutter core, the top end of the milling cutter head is provided with a plurality of convex milling cutter edges, and the convex milling cutter edges are fixedly connected with the milling cutter handle. Each convex milling cutter edge is arranged on one side of the milling cutter core, and the milling cutter core is a large-core-diameter cutter core. The milling cutter handle and the milling cutter core are arranged, the milling cutter handle is made of tungsten steel base metal, tungsten steel base metal has high abrasion resistance and high toughness and collapse resistance, then the collapse resistance of the cutting cutter can be improved, the milling cutter core adopts a large-core-diameter design, a firm cutter body structure and a sharp cutting edge are combined, the rigidity of the cutter can be greatly improved, and the service life of the cutter is prolonged. And the high-dynamic milling performance can be enhanced, so that the collapse resistance of the cutter can be further improved.

The invention relates to a reinforced concrete joist reinforced masonry structure lintel crack and a construction method thereof. The reinforced concrete joist reinforced masonry structure lintel crack comprises a reinforced concrete joist, transverse steel bars and stirrups. The reinforced concrete joists are symmetrically arranged on the two sides of the lower portion of the masonry structure lintel crack. After transverse steel bars in the reinforced concrete joists are bound and fixed through stirrups, concrete is poured into the supporting formworks; after the reinforced concrete joist reaches a certain strength, cement polymerization grouting liquid is poured into the crack; the reinforced concrete joist is adopted to reinforce lintel cracks of the masonry structure, tensile stress generated by pressure grouting reinforcement can be borne, the ductility of the structure can be improved, and the anti-collapse capacity of the structure can be enhanced.

The utility model relates to a field ridge with a geomembrane, geotextile and bamboo pile collaborative structure, and belongs to the technical field of field ridge structures. Comprising a native soil field ridge, the native soil field ridge is provided with a filling field ridge formed through filling and compaction, the filling field ridge is covered with a geomembrane, and the geomembrane covers the outer side and the top of the filling field ridge and extends towards the field surface by a certain distance. The filled field ridge is covered with the waterproof geomembrane, the isolation layer is formed, rainwater and field accumulated water are effectively prevented and reduced from permeating into the field ridge, and therefore the collapse resistance of the field ridge is effectively improved.

The utility model belongs to water conservancy slope protection technical field especially relates to a water conservancy slope protection. The utility model provides a water conservancy slope protection, including the slope protection, still include: protection device, protection device fixed setting on the slope protection, the slope protection device is used to fix the silt on the slope protection, the protection device includes the planting interval, the planting interval is used to provide the space of plant growth. In this technical scheme, the planting interval on the protection device can provide the space of plant growth, so that the plant can better survive on the slope protection, so that the soil can be better fixed on the slope protection, not only is favorable to the ecological environment friendly, also prevents the collapse of the slope protection caused by the water and soil loss.

The invention relates to the technical field of slope engineering construction, in particular to a construction method for preventing collapse in a slope construction process, which comprises the following steps of: dividing at least two unit slope sections in a preset slope excavation area along the direction from the slope top to the slope bottom; when the first unit slope section is constructed, the first slope surface is exposed; a supporting structure is arranged at the bottom of the first slope surface; based on the supporting structure, a protection structure is arranged along the outer surface of the first slope surface; and other unit slope sections are constructed according to the protection mode of the first unit slope section. The construction of the slope is split from the slope top to the slope bottom according to the unit slope section, so that protection is carried out while excavation construction is carried out on the unit slope section, the anti-collapse capacity of the unit slope section is improved, and therefore the construction method can be applied to slope construction in rainy seasons or areas where rainy days are frequent; the construction reliability of the side slope under severe conditions is improved; and the construction risk is reduced.

The application belongs to the technical field of composite materials, and particularly relates to a hybrid continuous fiber 3D printed double-diagonal reinforced bionic lattice composite structure, a tough phase outer frame constraint structure, and a high-strength bearing core structure. The tough phase outer frame constraint structure is a simple cubic lattice configuration and is made of continuous glass fiber reinforced polyamide composite material. The high-strength bearing core structure is a double-diagonal line topology configuration of a deep-sea glass sponge and is made of continuous carbon fiber reinforced polyamide composite material. The application adopts a differentiated material layout strategy of "high toughness of outer frame and high strength of core body", prepares the outer frame constraint structure by using CGF / PA high-toughness composite material, effectively disperses external impact load, delays initial cracking of the structure, reduces the initial peak force of compression, and inhibits local stress concentration and micro-defect expansion on the basis of excellent fracture toughness and deformation adaptation characteristics.

The utility model provides a kind of continuous fiber reinforced epoxy resin matrix mould pressing plate material, it solves the structural strength deficiency of epoxy resin mould pressing plate connecting place and other problems, it includes a pair of laminated arrangement main plate, fiber layer is arranged between main plate, epoxy resin is filled between fiber layer and main plate, aramid nonwoven fabric is selected for fiber layer, main plate selects polyimide material and has corrugation of heat-pressing forming, connecting strengthening point is arranged between main plate and fiber layer.The utility model has the advantages of high structural strength, strong tear resistance and the like.

The invention relates to the technical field of concrete, in particular to concrete special for ground terraces and a preparation method of the concrete. The special concrete for the ground and the terrace is prepared from the following raw materials in parts by weight: 300 to 500 kg / m < 3 > of cement, 600 to 750 kg / m < 3 > of fine aggregate, 900 to 1200 kg / m < 3 > of medium-coarse aggregate, 15 to 40 kg / m < 3 > of bentonite, 30 to 60 kg / m < 3 > of high-performance water reducing agent, 10 to 30 kg / m < 3 > of retarder, 10 to 20 kg / m < 3 > of stabilizer, 300 to 600 kg / m < 3 > of water and 10 to 20 kg / m < 3 > of corrosion-resistant enhancer. The retarder is prepared by mixing the following raw materials in parts by weight: 5-20 parts of expanded perlite, 7-15 parts of sodium lignin sulfonate, 4-8 parts of borax, 2-6 parts of sodium hexametaphosphate and 2-7 parts of tartaric acid. The special concrete for the ground and the terrace, prepared by the invention, has good compression resistance, and also has good durability and collapse resistance.

This invention relates to the field of farmland irrigation technology and discloses an irrigation vehicle for preparing hydrogen-rich water for farmland irrigation. It includes a water tank compartment movably connected to the towing hook of a tractor unit. A hydrogen-rich water preparation device is fixedly connected between the water tank compartment and the tractor unit. An irrigation ditch-digging device is also connected to the towing hook of the tractor unit. The irrigation ditch-digging device includes a drainage pipe, a channel soil removal device, and a ditch-opening device. The ditch-opening device uses a slanted plow to dig and open channels in the farmland. The channel soil removal device collects and piles soil after digging and opening channels. The drainage pipe collects and discharges water through the interior of the ditch-opening device. This invention combines a trapezoidal platform shaping device (with protruding strips), a flattening roller, and a water-driven compaction structure to achieve shaping and reinforcement of the soil after trenching. The beneficial effects are significant: the protruding strips of the platform shaping device are embedded in the soil slope, combined with the trapezoidal structure that is narrower at the top and wider at the bottom.

The invention belongs to the technical field of foundation pit supporting, and particularly relates to a mounting device for a steel support and a top beam in a narrow space foundation pit, which comprises a foundation pit, a supporting assembly and a steel support assembly, the supporting assembly is arranged on the inner wall of a foundation pit, the steel supporting assembly is installed at the corner of the inner wall of the foundation pit, and the steel supporting assembly is attached to the supporting assembly. The steel supporting assembly is installed at the corner of the inner wall of a foundation pit, is used for freely assembling the right-angle connecting position of a crown beam in a narrow space of the foundation pit and the foundation pit, and is compatible to the crown beams with different widths, so that the collapse resistance of the right-angle connecting position of the crown beam is improved, and meanwhile, the reinforcing effect can be improved.

This utility model relates to the reinforcement structure of existing brick buildings, belonging to the field of building engineering technology. Specifically, it is a concrete pin reinforcement structure for the bottom of existing brick foundations, including newly added concrete pins and a load-bearing brick wall. Multiple newly added concrete pins are provided and are fixedly installed on the load-bearing brick wall. It also includes a concrete cushion layer, which is fixedly installed at the bottom of the newly added concrete pins. This utility model achieves the effects of short construction period, convenient construction, and low cost. It solves the problems of easy cracking of ordinary concrete and incoordination with brick masonry deformation in existing construction methods. In addition, the pin anchorage is weak, the longitudinal reinforcement is discontinuous, and the load-bearing capacity is not strong.

The utility model provides a PCD (Poly Crystal Diamond) milling blade with a high-gloss surface, the width of an upper-end cutting edge of the PCD milling blade with the high-gloss surface is 1.8 mm, the upper-end cutting edge is arc-shaped, the radius of the upper-end cutting edge is 90mm, and the center distance of the upper-end cutting edge is 0.94 mm. The PCD material is adopted, so that the high-temperature-resistant and high-durability PCD drill bit has the excellent performance of extremely low friction force proportion, high temperature resistance, high durability, high physical wear resistance, high chemical wear resistance, high crescent wear resistance, high mechanical wear resistance, high cold welding wear resistance and the like. The radius of the PCD tool nose is 0.2 mm, the relief angle of the PCD tool nose is 17 degrees, and the oblique angles of the reference surfaces on the right side and the bottom side are 6 degrees respectively, so that the blade has high contact rigidity and impact resistance. And meanwhile, the PCD blade can be rapidly fed for precise cutting, a controllable high-quality cutting plane of an aluminum alloy material plane of a machined workpiece can be guaranteed, and the tool durability is quite good.