160 results about "High strength concrete" patented technology

The invention belongs to the technical field of concrete crack detection, and particularly discloses and provides a high-strength concrete construction crack detection system and method.The system comprises a multi-parameter cooperative sensing module, a construction crack recognition module, a crack risk analysis module and a crack early warning processing module. According to the invention, the temperature, humidity, strain and multispectral image data from a plasticity stage to a hardening stage are collected in real time through the multi-parameter cooperative sensing module, and crack characteristics are extracted by combining staged differential signal processing and a deep convolutional neural network, so that the detection precision of micro cracks and internal defects is remarkably improved. Meanwhile, multi-physics field data are fused, a crack evolution risk rate model is innovatively constructed, dynamic probability prediction before crack initiation is achieved, a grading disposal scheme is automatically triggered through risk grade division and a progressive early warning mechanism, drying shrinkage and temperature crack causes are effectively distinguished, the prevention and control efficiency is remarkably improved, and the method is suitable for large-scale popularization and application. And full-life-cycle accurate monitoring of the high-strength concrete is supported.

The invention provides nano-silicon-based high-strength concrete and a preparation method thereof, and belongs to the technical field of concrete.The concrete is prepared from cement, mineral powder, fly ash, machine-made sand, first-class gravel, second-class gravel, an additive, nano-silicon or a nano-silicon composite modified material and water; the additive is a polycarboxylic acid water reducer and / or a polyether air entraining agent. According to the prepared concrete, the nano silicon material with good dispersity is added, so that the cement consumption can be reduced, the cost can be reduced, and the workability, the strength and the durability can be improved; and the preparation process is simple and convenient, is suitable for large-scale production, and can be widely applied to the engineering fields of high-rise buildings, bridges, tunnels and the like.

The invention relates to the field of building material preparation, in particular to a high-strength concrete material and a preparation method thereof.According to the high-strength concrete material, through the synergistic effect of core-shell type temperature-sensitive resin particles, a pH response type expanding agent and industrial solid waste composite micro powder, multi-environment self-adaptive crack resistance and mechanical property breakthrough are achieved. The core component is prepared from 180 to 240 parts of cement, industrial solid waste composite micro powder (30 to 50 parts of fly ash-based nano SiO2 and 50 to 70 parts of steel slag micro powder), 10 to 15 parts of core-shell resin particles and 8 to 12 parts of pH response type expanding agent. According to the preparation process, multi-section intelligent stirring (ultra-high-speed shearing and dispersing of the nanometer material) and dynamic maintenance of the internet of things are adopted, the hydration process is precisely regulated and controlled, and the finally prepared material has excellent compressive strength and anti-cracking performance. The method is suitable for severe scenes such as ocean engineering and plateau buildings, and has wide application prospects.

This invention relates to a rapid-setting high-strength concrete and its preparation method. The rapid-setting high-strength concrete comprises the following raw materials in parts by weight: 100-200 parts cement, 80-100 parts coarse aggregate, 40-60 parts fine aggregate, 10-20 parts rubber powder, 20-30 parts modified straw-based carbon powder, 0.3-0.5 parts coupling agent, and 0.6-0.8 parts water-reducing agent. The modified straw-based carbon powder is obtained by first adding straw powder to an activation solution containing aluminum sulfate, carboxymethyl starch, and triethanolamine, followed by activation, ball milling, and freeze-drying to obtain a precursor. The precursor is then mixed with flake aluminum powder and heated under an inert atmosphere to obtain the final product. The mass fraction of aluminum sulfate is 5-10%, the mass fraction of carboxymethyl starch is 5-10%, and the mass fraction of triethanolamine is 3-5%. This invention improves the rapid setting effect, compressive strength, flexural strength, and crack resistance of concrete by incorporating modified straw-based carbon powder into the concrete components. This is of great significance for improving the overall performance of concrete and developing infrastructure construction.

The application provides a kind of stack type light weight high strength concrete material and its preparation method.The application is filled in the mold by stacking ceramsite, and the ceramsite fills the mold in a close-packed manner;Then, according to the preset weight fraction, the cement, silica fume, saw mud, fly ash floating bead, hollow glass microsphere, fly ash, water reducing agent and water are weighed, and the high fluid light weight high strength mortar is obtained after fully mixing, and it is poured into the mold filled with ceramsite, so that the high fluid light weight high strength mortar fills the gap between the ceramsite, and the light weight high strength concrete material is obtained after curing. Through the above-mentioned manner, the application can prepare the high fluid light weight high strength mortar with slightly lower density than the ceramsite, to ensure that the pouring process will not appear the phenomenon of ceramsite floating, and effectively utilize the space skeleton formed by the mutual lap of ceramsite in the stacking process to effectively improve the strength of the concrete, so that the prepared stack type light weight high strength concrete material has low bulk density and high strength.

The invention discloses a blast furnace slag flushing water chute and a wear-resistant lining for the chute, and relates to the technical field of blast furnace equipment, the water chute comprises a dry slag layer, a common concrete layer, a water slag cast iron lining and the wear-resistant lining; the common concrete layer and the grain slag cast iron lining layer are lower than the dry slag layer and higher than the wear-resistant lining layer; the bottom of the cross section of the wear-resistant lining is arc-shaped, and the radius R of the arc is more than or equal to 200mm and less than or equal to 400mm; the wear-resistant lining layer is provided with a sawtooth-shaped convex body; and a steel wire mesh is laid between the wear-resistant lining layer and the water slag cast iron lining layer. The wear-resistant lining for the chute is formed by mixing and pouring high-strength concrete and scrap iron filler according to the mass ratio of 1: (0.2-0.8), and the particle size of the scrap iron filler is 1-10 mm. The strength grade of the high-strength concrete is not lower than C60. The blast furnace slag flushing water chute can solve the problems that an existing blast furnace slag flushing water chute is poor in structural integrity, a chute lining is prone to abrasion and damage, maintenance is difficult, and cost is high.

The invention provides machine-made sand-river sand-containing high-strength concrete and a preparation method thereof, the machine-made sand-river sand-containing high-strength concrete comprises aggregates and an inorganic binder, the aggregates comprise fine aggregates and coarse aggregates, the fine aggregates comprise limestone machine-made sand and river sand, the coarse aggregates are broken stones, the inorganic binder comprises cement, water and a water reducing agent, the mass part of each component is 1740-1844, and the mass part of each component is 100-300. The concrete is prepared from the following components in parts by weight: 258 to 288 parts of limestone machine-made sand, 387 to 432 parts of river sand, 1095 to 1124 parts of gravel, 586 to 684 parts of inorganic binder, 146 to 150 parts of water, 5 to 6 parts of water reducing agent and 435 to 528 parts of cement. The T-beam concrete has good working performance and durability, and the calculated value of the rebound strength of the T-beam can meet the technical requirements of the design strength. The machine-made sand concrete can be widely applied to the field of buildings, and has practical significance in reducing the production cost of engineering concrete, reducing energy consumption, reducing environmental pollution and improving the concrete strength and volume stability of prefabricated T beams.

The application provides a preparation process of high-strength concrete, and belongs to the technical field of concrete, and comprises the following steps: step S1, Mg-Al-LDH-NO2 powder is prepared; step S2, microcapsules are prepared; step S3, machine-made sand, granite crushed stone, Portland cement, slag powder, limestone powder, metakaolin, microcapsules, water, a water reducing agent and Mg-Al-LDH-NO2 powder are mixed and stirred to obtain high-strength concrete. The application can achieve the purpose of improving the strength and durability of concrete.

A kind of automatic opening device and method of high-strength concrete in radioactive site, including device base, device column, opening motor, device spindle, tool magazine;Base includes base body, datum plane, electromagnet, lifting eye screw, coarse guide device, positioning pin, the upper surface of base body is datum plane;Base body side is provided with electromagnet, coarse guide device and positioning pin;Device column supports concrete opening device spindle and spindle auxiliary support;Device column includes column lifting motor, speed reducer, cylindrical slide rail, T-type screw;Column lifting motor is set on the upper portion of device column, column lifting motor lower side is connected with speed reducer, speed reducer is connected with T-type screw, cylindrical slide rail is set on device column, drives device spindle to lift.

The invention discloses an uninterruptible power transmission and transformation station support column reinforcing structure, and relates to the technical field of power equipment reinforcement. According to the uninterruptible power transmission and transformation station support column reinforcing structure, under the mutual cooperation of the reinforcing assembly and the reinforcing assembly, when the problems of weathering damage and the like occur to a support column body of a transformer station, after the reinforcing assembly and the reinforcing assembly are installed on the outer wall of the support column body to form a grouting space, concrete is poured into the interior to wait for solidification forming; through cage type sleeving and pouring of high-strength concrete, the support column has large supporting strength, the overall stability of the transformer substation is kept, good supporting performance is kept in the long-term use process, and the service life of the transformer substation is prolonged. After the whole concrete is solidified and formed, the reinforcing assembly can be detached to facilitate follow-up reuse, the whole mounting and fixing mode is not complex, the consumed time is short, the grouting space has a good sealing effect, and the problem of leakage during concrete pouring is prevented.

The invention provides a unit braking system. The unit braking system comprises a rotating shaft; the brake disc is fixedly mounted on the rotating shaft; the brake comprises at least one brake plate, and the brake plate is configured to make contact with the brake disc so as to limit rotation movement of the brake disc along with the rotating shaft; the rotating shaft is arranged in the vertical direction, and the brake disc is located at the upper end of the rotating shaft in the vertical direction. The brake maintenance and replacement difficulty can be reduced on the first aspect, meanwhile, a safety hole for maintaining and replacing the brake does not need to be designed in high-strength concrete on the second aspect, and therefore the overall strength of a high-strength concrete building cannot be damaged; and finally, the cost of the high-strength concrete building can be reduced while the structural strength of the high-strength concrete building is ensured.

The application relates to the field of concrete, and particularly discloses renewable high-strength concrete and a preparation method thereof. The preparation method of the renewable high-strength concrete comprises the following steps: Step 1, pretreatment of renewable aggregate, specifically as follows: Step 1-1, mixing of magnet powder and water to form a pretreatment liquid; Step 1-2, immersion of the renewable aggregate in the pretreatment liquid; Step 1-3, pressurization; Step 1-4, immersion of the renewable aggregate in a gap filling liquid; Step 1-5, pressurization and magnetic field treatment, so that the renewable filling aggregate is obtained; the gap filling liquid is composed of the following components: liquid sodium silicate, magnet powder, water absorption resin powder, hollow glass microbeads, white carbon black and diatomite; Step 2, preparation of concrete mixture; and Step 3, curing and molding. The strength performance of the concrete prepared by the application is not easily affected by the renewable aggregate.

The invention discloses a preparation method of a high-strength concrete additive, the preparation method of the high-strength concrete additive is used for preparing the high-strength concrete additive, the preparation method of the high-strength concrete additive is realized through a preparation device of the high-strength concrete additive, and accurate proportioning of reaction liquid is completed by arranging a mixing mechanism; reaction liquid and water are fully hydrolyzed through three groups of liquid guide plates, a lower cylindrical cam is controlled to reciprocate up and down, the lower cylindrical cam controls a communicating pipe, a right compaction rod and a left compaction rod to reciprocate up and down, and the right compaction rod extrudes a sponge through a right compaction block to realize condensation work of the reaction liquid and formaldehyde; a communicating pipe performs piston motion through a liquid return plate, condensed reaction liquid is pumped into a neutralization cylinder, a left compaction rod extrudes a sponge to add liquid caustic soda into the reaction liquid, and therefore neutralization work is achieved, compared with an existing device, the adding proportion of formaldehyde and the liquid caustic soda can be controlled, and the situation that the proportion is not uniform enough is avoided.

The utility model discloses a rack rail concrete sleeper which comprises a foundation structure, a sleeper body is arranged on the foundation structure, and an embedded part is arranged in the sleeper body and used for connecting the sleeper body with the foundation structure of a railway line. Steel rails are arranged at the two ends of the foundation structure, the steel rails and the foundation structure are tightly connected through a fastener system, a rack rail body is arranged in the middle of the foundation structure, and the rack rail body and the foundation structure are tightly connected through a fastener system. According to the rack rail concrete sleeper, the embedded structure on the sleeper is tightly matched with a specially-made fastener system, stable longitudinal and transverse constraint is formed, displacement of the sleeper under the load effect of a train is effectively prevented, meanwhile, due to the application of a high-strength concrete material, the compression resistance, fracture resistance and abrasion resistance of the sleeper are improved, the service life is prolonged, and the service life of the sleeper is prolonged. The fastener system is simple in structure and easy to install and maintain, the maintenance cost is reduced, the toothed rail body is subjected to special treatment, and the abrasion resistance is improved.

The invention belongs to the technical field of deep ground environment mechanical testing, and discloses a device and a method for simulating a three-dimensional ground stress environment through prestressed reinforcements. The device comprises a test piece main body part, a prestress applying part, a positioning and reinforcing part and a monitoring and feedback part, the test piece main body part is composed of a stress test piece and a high-strength concrete outer layer, and the prestress applying part applies prestress through prestressed steel bars arranged in three directions by a post-tensioning method and is fixed; the positioning reinforcement part realizes prestressed reinforcement positioning and concrete protection, and the monitoring feedback part acquires strain data. According to the invention, the problems of unstable stress, low scene reduction degree and too high cost in the existing crustal stress simulation technology are solved, and the three-dimensional crustal stress environment of the deep ground can be accurately simulated.

A method for preparing high-strength concrete based on expandable fibers includes first uniformly mixing expandable graphite particles with a polymer spinning solution to obtain a mixed solution. The mixed solution is then subjected to electrospinning, wet spinning, air-jet spinning, or centrifugal spinning to produce spun fibers, i.e., expandable fibers. The expandable fibers are then uniformly mixed with concrete raw materials, and water is added and stirred to obtain a concrete slurry. The concrete slurry is then allowed to solidify to obtain a solidified body. The solidified body is then heated at a temperature of 200°C to 600°C. When the expandable graphite in the solidified body expands due to the heat, the high-strength concrete is obtained. This design not only improves interfacial properties and reduces production costs, but also enhances the mechanical strength of the final product.

The application provides a magnesium phosphate cement-based grouting repair material and a preparation method thereof, and raw materials of the magnesium phosphate cement-based grouting repair material include: magnesium phosphate cement, fine aggregate and a composite reinforcing component; the composite reinforcing component includes: aluminum tripolyphosphate or an aluminum tripolyphosphate modified product and carboxymethyl chitosan. The application has high hourly strength and super-high later strength, and meets the repair and grouting requirements of high early strength and super-high strength concrete; meanwhile, the preparation method is simple and has strong operability.

The invention discloses a forming die for a reserved hole of a reinforced concrete floor slab. The forming die comprises a floor slab bottom formwork and a forming core die arranged on the floor slab bottom formwork. Wherein the outer wall of the forming core mold is coaxially sleeved with a pre-buried supporting pipe, and the multiple self-destruction type supporting pieces are evenly distributed in the circumferential direction of the pipe wall of the pre-buried supporting pipe and fixedly connected with the forming core mold; the center fixing support is inserted into an inner cavity of the forming core mold, the lower end of the center fixing support is fixedly connected with a floor bottom mold plate, and the center fixing support is used for pressing the forming core mold from the inside. Connection is actively relieved through the self-destruction mechanism, violent form removal is avoided, damage to the inner wall of a high-strength concrete hole is thoroughly eliminated, and structural integrity is guaranteed; the water in the concrete curing environment is used as a trigger source, time sequence control is achieved, external energy input is not needed, the mechanism works reliably, the automation degree is high, operation is easy and fast, the working efficiency is greatly improved, the labor intensity and the man-hour cost are reduced, applicability is high, and the wide market prospect is achieved.

The utility model discloses a C80 high-strength concrete large-top-diameter part prestress electric pole, which belongs to the technical field of electric poles, and comprises an upper electric pole and a lower electric pole which are installed in a combined mode, clamping grooves are formed in the combined ends of the upper electric pole and the lower electric pole, an upper flange seat is installed outside the clamping groove of the upper electric pole in a clamping mode, and a lower flange seat is installed outside the clamping groove of the lower electric pole in a clamping mode. A lower flange seat is clamped outside the clamping groove of the lower electric pole; a plurality of short threaded rods are fixed to the upper flange base at equal angles, threaded rings are arranged outside the short threaded rods in a threaded and sleeving mode, a plurality of hollow columns are fixed to the upper flange base at equal angles, and the hollow columns and the short threaded rods are distributed in an up-down corresponding mode; a plurality of long threaded rods are fixed on the lower flange seat at equal angles; stress generated on the upper electric pole and the lower electric pole after combination can be effectively buffered through the buffering mechanism, and the stability of combined installation of the upper electric pole and the lower electric pole is kept.

The utility model discloses an undercut tap bolt, which relates to the technical field of bolts, and comprises a screw rod and a thread assembly, the bottom end of the screw rod is provided with a screwing mechanism, the thread assembly is arranged on the outer wall of the screw rod, the thread assembly is used for positioning the screw rod in concrete, and the thread assembly comprises a first thread and a second thread, the first thread is spirally arranged on the outer wall of the screw rod, the second thread is spirally arranged at the end part of the screw rod, and the first thread is connected with the second thread. By means of the arrangement of the first threads and the second threads, the whole bolt is made of stainless steel except for the second threads, so that the bolt can be suitable for dark, humid and hostile environments, when the bolt is used, the second threads on the outer wall of the screw rod are screwed into concrete firstly, and the second threads on the outer wall of the screw rod are screwed into the concrete. And the second threads made of spring steel have the characteristics of high strength and high toughness, so that the bolt meets the mounting and using requirements of high-strength concrete, and the applicability of the bolt is improved.

The invention relates to the technical field of tubular pile foundation engineering, in particular to a prestressed high-strength concrete tubular pile anti-pulling connecting device and a construction method, and the prestressed high-strength concrete tubular pile anti-pulling connecting device comprises an upper-section tubular pile and a lower-section tubular pile, the bottom end of the lower-section pipe pile is provided with a pile tip, and the top end of the lower-section pipe pile is provided with a second connecting end plate and is welded with the first connecting end plate; the core filling concrete is internally provided with a reinforcement cage and is of an integrated structure; the reinforcement cage is placed in the upper-section pipe pile and the lower-section pipe pile, and the core filling concrete is formed after concrete is poured, so that the upper-section pipe pile and the lower-section pipe pile are connected into a whole; the upper-section pipe pile and the lower-section pipe pile are connected in a two-end-plate welding mode, meanwhile, mechanical connection is replaced by core filling concrete formed by concrete core filling in the pipe piles, the welding connection and concrete core filling mode can meet the connection requirement of the pipe piles in the strong corrosion environment, and meanwhile, due to the fact that mechanical connection is not adopted, the connection cost is reduced. The use of mechanical joints is reduced, and the construction cost is greatly reduced.

The high-strength concrete floor tile for the road for constructional engineering comprises four sets of concrete tile bodies, fixing mechanisms are arranged among the four sets of concrete tile bodies, the concrete tile bodies are equilaterally distributed in an octagonal structure, four sets of connecting grooves are equidistantly formed in the outer surface of the upper end of each concrete tile body, and each fixing mechanism comprises an inner ring sleeve; four sets of first hinge seats are annularly and fixedly connected to the outer surface of the inner ring sleeve at equal intervals, buffer mechanisms are hinged to the four sets of first hinge seats, and an elastic metal plate is arranged between every two adjacent buffer mechanisms; the structure of the device can effectively overcome the defects of instability in an external human use factor state and irregular stress pulling such as thermal expansion and cold contraction in a ground soil or material state, so that effective stability of a concrete brick body in the use process is guaranteed, the probability that the concrete brick body is accidentally upwarped or damaged due to accidental stress pulling is reduced, and the service life of the concrete brick body is prolonged. Therefore, high use efficiency of the concrete brick body is guaranteed.

The invention provides a mixed tower self-repairing steel-concrete connecting structure based on gradient stiffness matching and SMA constraint and a wind power mixed tower. The mixed tower self-repairing steel-concrete connecting structure comprises a top ring duct piece and a switching structure connected to the upper portion of the top ring duct piece. The top ring duct piece is a prefabricated concrete annular segment, and an SMA constraint component is pre-buried in the top ring duct piece and used for self-repairing cracks in the top ring duct piece; a shell of the switching structure is an SMA plate, high-strength concrete is poured into an inner annular cavity to form a composite structure, an SMA non-resonant honeycomb structure with the elastic modulus similar to that of the concrete is arranged at the position of an inner skirt edge, and through cooperation of the SMA plate and the SMA non-resonant honeycomb structure, the rigidity difference and the deformation difference under the temperature are weakened, and force transmission is optimized. By means of the technical scheme, the problems that in the prior art, due to mismatching of the rigidity gradient of the steel-concrete switching section and the duct piece interface, the axial stress concentration external expansion effect is caused, and the anti-cracking performance of the duct piece is degraded in the operation stage of the mixed tower can be effectively solved.

The utility model provides a pretensioning method prestressing force variable strength concrete prefabricated component, which comprises a component concrete body, a prestressing force steel strand and a reinforcing steel bar, the component concrete body comprises a high-strength concrete body and a low-strength concrete body, the high-strength concrete body adopts high-strength concrete with a compressive strength standard value of 60-200MPa, the low-strength concrete body adopts high-strength concrete with a compressive strength standard value of 60-200MPa, and the high-strength concrete body adopts high-strength concrete with a compressive strength standard value of 60-200MPa. The high-strength concrete body wraps the prestressed steel strand in the high-strength concrete body, the low-strength concrete body is made of low-strength concrete with the compressive strength standard value of 30-50 MPa, and the low-strength concrete body is arranged above the high-strength concrete body or surrounds the high-strength concrete body in a half mode from the upper portion and the two end faces of the high-strength concrete body. The concrete of the low-strength concrete body and the concrete of the high-strength concrete body are combined into a whole in a layered pouring mode. According to the design, under the condition that the bearing capacity requirement of the component is met, the performance of concrete with different strengths is fully exerted, the cross section height and the self weight of the component can be properly reduced, the cost performance of the prestressed component is improved, and the problems that in the prior art, materials of a prefabricated component cannot be fully utilized, and the performance and the cost of the prefabricated component are difficult to balance are solved.

The application discloses a three-dimensional curved brick arch splicing unit, a three-dimensional curved vault system and a manufacturing method, relates to the technical field of assembled vaults, and comprises a three-dimensional curved brick arch body, a plurality of soft connecting pieces and a keel frame. The three-dimensional curved brick arch body comprises a three-dimensional curved brick body and a UHPC high-strength concrete pouring body. The three-dimensional curved brick body is a three-dimensional curved surface formed by splicing a plurality of brick bodies. Filling intervals are arranged between the brick bodies. The UHPC high-strength concrete pouring body is used for integrally pouring the outside of the three-dimensional curved brick body and the filling intervals. The bottom end of each soft connecting piece is embedded and fixed to the top of the three-dimensional curved brick arch body, and the top end is used for being connected with the bottom of the keel frame. The top of the keel frame is used for being connected with a concrete main body structure. The application forms an assembled prefabricated part by pouring UHPC high-strength concrete on the brick body. The structure is simple, the construction is convenient, the integrity is good, the curved surface is smooth, the precision is high, the self weight is light, and the cost is effectively reduced.

The utility model discloses a high-strength building concrete pile which comprises a drilling steel pipe pile, the drilling steel pipe pile comprises a steel pipe, a reinforcement cage and concrete, the reinforcement cage is placed in the steel pipe, and the steel pipe is filled with the concrete; the deviation preventing assembly comprises a mounting plate, a supporting block, a first threaded hole, a supporting plate, a second threaded hole, a bolt and a second limiting groove, the mounting plate is fixed to the inner side of the steel pipe, the supporting block is fixed to the side edge of the mounting plate, the first threaded hole is formed in the middle of the supporting block, and the second threaded hole is formed in the middle of one end of the supporting plate; the bolt is screwed in the first threaded hole and the second threaded hole, and the second limiting groove is formed in the other end, away from the second threaded hole, of the supporting plate. The utility model solves the problem that when a reinforcement cage is placed in a steel pipe, if the placement position is deviated or the reinforcement cage is deviated in the pouring process, the installation positions of an upper top plate and an upper building are deviated, and the overall performance of a pile is reduced.

The invention provides a high-strength concrete low-cost mix proportion optimization calculation method, and relates to the technical field of civil engineering, according to the method, the types of colloids used for manufacturing high-strength concrete are obtained, a plurality of reference colloid vectors are randomly generated within the allowable range of the dosage ratio of each colloid, and the high-strength concrete under each reference colloid vector is prepared. Obtaining the performance parameters of the high-strength concrete, calculating the correlation between each performance parameter and each colloid, and constructing and training a performance prediction model colloid by taking the reference colloid vector as the input and the performance parameters of the high-strength concrete as the output; constructing a strength constraint condition based on the compressive strength and the tensile strength, and generating a plurality of colloid vectors meeting the strength constraint condition to form an initial population; and carrying out selection, directional crossover and mutation operation on the colloid vectors in the initial population based on the performance parameters, executing iteration operation until a preset number of iterations is reached, and selecting an optimal concrete colloid vector from the iteration population iterated for the last time based on the performance parameters and the price.

The application discloses a kind of assembled beam column built-in T-shaped steel node fills UHPC connection method, including prefabricated beam column, node connection, damping setting and sleeve mould grouting steps, the method utilizes mould mechanism prefabricated concrete column with T-shaped steel and laminated beam, then connect T-shaped steel in beam and column by high-strength bolt, and set damping device between the upper and lower relative wing plate of T-shaped steel, finally, sleeve U-shaped mould in node connection part, pour ultra-high strength concrete UHPC, enhance the integrity of node, improve the ductility and energy dissipation capacity of node, realize fast, reliable node connection, both guarantee the high efficiency of node area mechanics transmission, also have reliable anti-seismic energy dissipation characteristics, the method has the advantages of convenient construction, superior anti-seismic performance, node reliability is high, applicable to the demand for efficient, environmental protection, safety in modern building, can improve the construction efficiency and structural performance of prefabricated building.

The utility model relates to a high-strength concrete building block, which belongs to the technical field of concrete building blocks, and comprises a concrete building block body, the left side and the right side of the concrete building block body are respectively provided with a holding groove, and the lower surface of the concrete building block body is provided with a connecting mechanism. According to the high-strength concrete block, when the high-strength concrete block is piled, the concrete block bodies can be taken and carried through the handheld grooves in the left side and the right side of the concrete block bodies, the multiple concrete block bodies are piled in a staggered mode from bottom to top, and the overall strength and stability of a wall are improved; the strength of the wall structure can be improved by filling the first reinforcing mesh layer in the inserting block, and the strength of the concrete block can be improved by filling the two second reinforcing mesh layers and the third reinforcing mesh layer in the concrete block body. The heat preservation performance and the sound insulation performance of the concrete block can be improved by filling the concrete block body with the two heat preservation plates.