12results about How to "Improve collapse resistance" patented technology

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 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 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.

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.