103 results about "Solid base" patented technology

The invention discloses a municipal road subgrade protection engineering construction technology, and relates to the technical field of municipal road construction, and the municipal road subgrade protection engineering construction technology comprises the following steps: S1, geological investigation and evaluation; s2, roadbed design and optimization; s3, drainage system design and water conservancy project; s4, roadbed reinforcement treatment; s5, roadbed material selection and quality control; s6, roadbed construction and compaction; s7, protecting and reinforcing the side slope; s8, roadbed monitoring and maintenance; and S9, implementing environmental protection and energy saving measures and performing construction safety management. By implementing detailed geological investigation and evaluation, scientific design and optimization, targeted reinforcement treatment, strict quality control and a comprehensive monitoring and maintenance system and integrating environmental protection and energy saving concepts, the stability and durability of the municipal road subgrade are improved, geological and environmental risks are effectively avoided, and the safety and reliability of the municipal road subgrade are improved. The rationality and safety of the road structure are ensured, meanwhile, resource saving and environment protection are promoted, and a solid foundation is laid for smoothness and safety of urban traffic.

The invention discloses a building structure design method based on multi-objective optimization, and relates to the technical field of building structure design, a data input module is utilized to input parameters which need to reach an objective at the beginning of building structure design and actual structure parameters, and a comparison and evaluation module is utilized to evaluate a building structure. And sequentially calculating and outputting the structural strength JQ, the structural stability index JW and the cost-benefit index JC of the building structure, adjusting the strength, the stability and the cost of the design of the building structure according to the compared and evaluated structure, and controlling the iteration of the whole design process by utilizing an iteration control module until the design meets all the targets required to be achieved at the beginning of the design. According to the method, the effects of comprehensively evaluating the structural strength, guiding material selection, improving the design efficiency, ensuring the structural safety, optimizing the structural design and reducing the maintenance cost are achieved, the beneficial effects jointly form a solid foundation of building structural design, and powerful support is provided for high-quality development of the building industry.

The utility model discloses a novel baseball exerciser, which relates to the technical field of sports equipment and comprises a base, the base is of a cross-shaped structure, the top end of the base is connected with a hollow pipe, a supporting rod is arranged above the hollow pipe, the hollow pipe and the supporting rod are connected through a connecting piece, and the top end of the supporting rod is connected with a ball support. According to the patent, the structure is simplified, disassembly and assembly are rapid and convenient, in addition, the base is also improved, an original rectangular solid base is improved into the cross-shaped base, on the premise that stability is not convenient, the containing space of the base is greatly reduced, and compared with an original rectangular base, the base has the advantages of being smaller in size and more convenient to carry, and the application range is wide. And therefore, the device is more portable when being carried outdoors.

The invention relates to a corrosion-resistant and high-temperature-resistant sinter plate and a preparation method thereof, and belongs to the technical field of sinter plate preparation. According to the invention, by controlling the temperature of a melt extruder and a mold extrusion process and combining dual polishing treatment, rough grinding is carried out by a 500-mesh grinding head and then accurate grinding is carried out by a 2000-mesh grinding head, so that the surface smoothness and cleanliness of a basic plate are effectively improved; the surface dust is further removed by adopting a nitrogen purging process, a solid foundation is laid for uniform adhesion of the surface strengthening coating, the surface strengthening coating is uniformly coated by adopting a spraying method, the corrosion resistance and the high temperature resistance of the sinter plate are enhanced, the firm combination between the coating and the basic plate is also ensured, and the service life of the sinter plate is prolonged. Therefore, the service life and the overall performance of the sinter plate are remarkably improved, and the application range of the sinter plate in a severe environment is widened.

The invention discloses a construction waste resource recycled concrete preparation process. The process comprises the following steps: step 1, dismantling and primary sorting; step 2, pretreatment and primary crushing; step 3, secondary crushing and shaping; step 4, screening and grading; step 5, deep impurity removal and purification; step 6, strengthening the aggregate; and step 7, storing a finished product. Step 8, designing and adjusting a mix proportion; step 9, proportioning and stirring; 10, transporting, pouring and maintaining; the construction waste can be efficiently treated and utilized in an environment-friendly mode through multiple steps, and the construction waste is converted into the recycled concrete with the practical application value. According to the present invention, the accurate mix proportion of the recycled concrete preparation is achieved through the accurate mix proportion design and adjustment and the scientific batching and stirring process, such that the quality stability of the recycled concrete is improved, the solid foundation is established for the wide application of the recycled concrete in various constructional engineering, and the excellent physical and mechanical properties of the recycled concrete are ensured.

The invention discloses a foundation pit mixed supporting structure and a construction method thereof, relates to the technical field of foundation pit supporting, and aims to solve the technical problems that in the prior art, all supporting parts are poor in collaboration, the due supporting effect is difficult to give full play, and the foundation pit collapse risk is high. Comprising a single-layer fulcrum structure in the form of adding a pre-stressed anchor cable to a common Larsen pile arranged on the side adjacent to a building. On the side adjacent to the structure, the Larsen steel sheet piles and the pre-stressed anchor cables achieve the synergistic effect, large lateral soil pressure can be borne, a solid foundation is provided for supporting, the foundation pit is prevented from deforming towards the structure, the soil nailing wall reinforces the soil body above the bottom elevation of the shallow foundation, and the integrity and the anti-sliding capacity of the side slope soil body are enhanced. By means of the improved construction technology, it can be ensured that all parts fully play roles, the foundation pit collapse risk is effectively reduced, and the surrounding structure and construction safety is guaranteed.

The invention discloses a grading design method for a high and steep stepped reinforced earth retaining wall under complex geology, which considers different construction conditions of complex terrain, specifically designs different grading mode selection strategies, adopts rib tension parameters to carry out stability analysis in each grading mode strategy, and improves the stability of the high and steep stepped reinforced earth retaining wall according to the stability of the high and steep stepped reinforced earth retaining wall. And a reinforcing method of the reinforced earth retaining wall under the condition of a small grading number is provided, and the reliability under each grading mode is guaranteed. According to the method, through a scientific and reasonable grading strategy, the complex design process of the high and steep step type reinforced earth retaining wall is refined and decomposed, a systematic and comprehensive design guidance scheme with operability is provided for designers, the accuracy and reliability of early-stage design of the reinforced earth retaining wall can be effectively improved, and the design efficiency of the reinforced earth retaining wall is improved. And a solid foundation is laid for smooth implementation of a project.

The utility model relates to dust collector brush injection mold with the technical field of guiding effect, especially dust collector brush injection mold with guiding effect, including upper die, the upper die is connected with the pouring gate and is provided with, the upper die bottom fixedly connected with guide pin, the guide pin outer wall sliding connection has the movable platen, the guide pin lower segment outer wall sliding connection has the support plate. This injection mold is connected with the guide pin of upper die bottom fixedly connected, and the stable and accurate direction of the movement of movable platen is provided. In the process of mold opening and closing, the movable platen along guide pin smooth sliding, cooperate the limit ring and ensure that the movable die and the fixed mold accurate alignment with the limitation of movable platen movement range. This design effectively avoids the dimensional deviation caused by mold misregistration, so that the size precision of injection molding dust collector brush is reliably guaranteed, greatly improves the compatibility of brush and dust collector, reduces the scrap rate caused by size, and lays a solid foundation for producing high-quality dust collector brush.

This utility model relates to the field of curtain wall installation technology, and in particular to an adjustable support for a steel structure of a building curtain wall, including a support, a support tube, and a screw cap. A support tube is fixedly connected to one side of the support, and a screw cap is fixedly connected to one end of the support tube. The support tube includes a support tube body, an inflatable anti-slip device inserted into the inner side of the support tube body, a partition fixedly connected to the inner side of the support tube body, an air inlet at one end of the support tube body, and a support rod fixedly connected to the outer side of the support tube body. A threaded groove is provided on the inner side of the support tube body. The inflatable anti-slip device includes a solid base, an inflation port on the outer side of the solid base, and an air supply strip hole inside the solid base. In this utility model, through the inflatable anti-slip device and the insertion bolt, it is possible to reinforce the minor pits between curtain walls while fixing the curtain wall installation, filling the gaps at the edges of the curtain wall panels while maintaining the stability of the curtain wall.

The invention discloses a construction evaluation method for building masonry, which comprises the following steps: establishing a stratum acquisition area in a construction area, acquiring a soil sample, and dividing the soil sample into a hard soil layer and a soft soil layer according to the water absorption of the soil layer; according to parameters of different stratums, design parameters of a foundation pile and a foundation ground beam are formulated, the foundation pile and the foundation ground beam serve as a foundation of a construction building masonry, a simulation model is established according to data of the foundation pile and the foundation ground beam, and stress needing to bear the building masonry is applied to the simulation model. And evaluating the stability of the foundation piles, the foundation ground beams and soil layers and rock stratums under the foundation, and giving construction suggestions. According to the scheme, detailed stratum test data and a comprehensive stability analysis method of construction analogue simulation are combined, so that the safety and the reasonability of the construction design scheme of the building masonry are ensured, and a solid foundation is provided for construction safety and smooth service.

The invention discloses a full-weathered and strong-weathered fractured rock stratum large-diameter TBM stable construction method which is characterized by comprising the following steps: 1) when a TBM is abnormal in tunneling, the TBM is shut down immediately for observation; (2) circumferential eave type consolidation is conducted; (3) the fragmented broken rock stratum or the powdery broken rock stratum is treated; (4) after treatment is completed, dynamic regulation and control are conducted on TBM tunneling parameters in the tunneling process; (5) primary support strengthening is conducted; and (6) the TBM continues tunneling. The device has the advantage of being reliable in use, stable construction can be carried out under the condition that a machine is not stuck, the construction interruption time is shortened, the TBM construction progress is guaranteed, the construction quality and safety can be guaranteed, the construction risk is reduced, the construction difficulty is reduced, and the treatment cost is reduced; and a solid foundation is provided for TBM tunneling to pass through unfavorable geology.

The invention relates to the technical field of metal material preparation, in particular to a heat treatment process of a mining vertical chain connecting ring. The mining vertical chain connecting ring is made of 23MnNiMoCr54 steel, and the heat treatment process is controlled in a double-gradient tempering and charging mode. By means of the innovative double-gradient tempering technology, precise regulation and control over the microstructure of the material are achieved, the spheroidization rate of carbide is increased to 70% or above from 65% or below, and the machinability and the mechanical property basis of the material are effectively improved; and meanwhile, the depth of a surface decarburized layer is strictly controlled within 200 microns, the fatigue strength of the surface layer is greatly reserved, the hardness distribution of a final finished product is highly uniform and is stabilized within the range of HRC39-42, the range does not exceed + / -1, and a solid foundation is laid for performance consistency.

The invention discloses a construction method for wall formwork erecting of a narrow expansion joint of a high-rise building, and relates to the technical field of expansion joint formwork erecting, a shear wall is included, a reinforcing assembly is arranged on one side of the shear wall, a supporting assembly is arranged on one side of the reinforcing assembly, and an expansion assembly is arranged on the top of the supporting assembly. According to the construction method for wall formwork erecting of the narrow expansion joint of the high-rise building, wall formworks are installed on the two sides of a shear wall steel bar frame and fastened through fixing bolts and nuts, the stability of the formworks can be guaranteed, a solid foundation is provided for follow-up construction, a triangular frame is fixed to one side of the formworks through expansion bolts, the overall stability can be enhanced, and the construction efficiency is improved. The length of the first telescopic plate and the second telescopic plate can be flexibly adjusted according to the size of the expansion joint, different construction requirements are met, adaptability is high, the telescopic plates are fixed through bolts after being adjusted in place, it is guaranteed that the positions of the telescopic plates are accurate, connection is firm, the construction efficiency is improved through the installation method, and the shear wall structure is safer and more reliable.

The invention belongs to the technical field of building structure engineering, and particularly relates to a steel structure fabricated building with a damping function, which comprises an L-shaped square tubular column, an inserting groove is formed in the upper end surface of the included angle of the L-shaped square tubular column, the inner cambered surface of the L-shaped square tubular column is of a hollow structure, and a joint assembly is connected in the inserting groove of the inner cambered surface of the L-shaped square tubular column in a penetrating manner; a stable supporting frame is formed through the L-shaped square pipe columns and the vertical pipe columns, a solid foundation is provided for a damping system, a first damping defense line is formed by the damping square pads, the deformation cambered surfaces and the honeycomb holes of the column sleeve pieces, initial vibration energy can be rapidly absorbed, and a second buffering barrier is formed by the damping soft balls and the rubber auxiliary pads of the damping plates. The energy is further dissipated through elastic deformation of the soft material, the buffering support guides the residual vibration force to the foundation frame by means of the force decomposition effect of the conical stand column and deformation adaptation of the outward extending end, final dissipation of the energy is achieved, and the vibration response of a building in a strong earthquake is greatly reduced.

The utility model discloses a submerged pipeline laying device for municipal roads, which relates to the technical field of pipeline laying and comprises a U-shaped plate, transverse adjusting rods capable of moving left and right are arranged at the front end and the rear end of the U-shaped plate, and the transverse adjusting rods are arranged on the U-shaped plate. The top end of the U-shaped plate is fixedly connected with a first stabilizing plate capable of being stabilized on the ground, and according to the municipal road submerging type pipeline laying device, by arranging stabilizing nails on the first stabilizing plate and arranging a plurality of stabilizing protrusions on a second stabilizing plate, the effect of stabilizing the device can be achieved. The first stabilizing plate can be firmly fixed to the horizontal plane of the ground through the stabilizing nails, and the second stabilizing plate and the stabilizing protrusions work cooperatively and are tightly attached to the side wall of the tunnel. Therefore, the conditions that the bottom face of the channel is hollow, uneven, wet and slippery are effectively overcome, the device can be kept stable in a complex underground environment, a solid foundation is provided for pipeline laying operation, and it is guaranteed that follow-up operation is conducted smoothly.

The utility model discloses an environmental protection science and technology rubber ball and vulcanization mould thereof, and the rubber basketball includes the inner bag layer, winding layer, base material layer and film layer that are wrapped in turn from inside to outside. The inner bag layer outer surface sets up the inner rubber layer to stick solid winding layer, and the winding layer outer surface sets up the outer rubber layer to stick solid base material layer, and the film layer is fixed through the base material layer outer surface adhesion, realizes the close adhesion between each functional layer while guaranteeing the stability of the ball body structure, and the overall performance of the basketball is optimized. The vulcanization mould contains the upper die, lower die of hinged, and both are equipped with heating gas inlet and outlet device and cooling water inlet and outlet device in the hollow area, and the upper gas outlet and lower gas outlet that are communicated with the hollow area are respectively arranged. The upper die and lower die cover and form the chamber containing the basketball, and the lower die is provided with the inflation air pipe that is communicated with the chamber, and the end portion is in register with the basketball air inlet. The technical scheme of the utility model can reduce the hardness of the rubber basketball and improve the hand feeling.

The utility model is suitable for the technical field of plywood processing devices, and provides an efficient gluing device for plywood, which comprises a supporting seat, a brushing assembly and a drying assembly are sequentially arranged on the supporting base according to the machining sequence. The brushing assembly comprises a first processing bin arranged on the supporting seat; the extending support and the glue storage barrel are arranged on the outer side of the processing bin, and the stirring shaft and the stirring blade rotate in the glue storage barrel. According to the utility model, the gluing uniformity and flowability are ensured, so that the gluing effect is obviously improved, and a solid foundation is laid for subsequent high-quality gluing operation; meanwhile, the accurate gluing mode of the liftable rolling brush not only improves the production efficiency, but also ensures the uniformity and consistency of the glue on the surface of the plywood; in the drying process, all-directional and dead-corner-free heating of the surface of the plywood is achieved, and the glue drying process is accelerated; by means of the design, the production efficiency is improved, and the quality problem caused by uneven drying is avoided.

The invention relates to the technical field of big data, and discloses a municipal road construction method and system based on BIM. According to the method and the system, basic information is systematically collected by means of a big data technology, laser scanning and the like, a database is formed, information islands are eliminated, misunderstanding and delay caused by information asymmetry are reduced, collision detection of underground pipelines and road structures is realized by establishing a complete urban BIM model, and the detection accuracy is improved. The method has the advantages that potential safety hazards and economic loss in construction are reduced, various links in the construction process are rehearsed by the aid of virtual simulation technologies, construction sequences and resource allocation are optimized, and finally, deviations in the construction process can be timely discovered and corrected by means of real-time data comparison and dynamic adjustment, so that construction quality and progress are guaranteed, and construction efficiency is improved. The series of measures not only improve the overall efficiency of construction, but also lay a solid foundation for subsequent road operation and maintenance management, and promote the digital and intelligent transformation of the construction industry.

The invention discloses an anti-abrasion combined concrete layered lining structure of a canal spillway in the field of water conservancy projects, the whole lining structure is of a V-shaped structure, and the lining structure comprises a fixed base layer, an anti-abrasion combined concrete layered lining layer and an anti-abrasion combined concrete layered lining layer, the buffer layer is poured on the surface of the solid base layer; the impact abrasion layer is poured on the surface of the buffer layer; the rigidity of the impact-wear layer is greater than that of the solid base layer; the rigidity of the solid base layer is greater than that of the buffer layer; the invention further discloses a construction method. The lining structure has the beneficial effects that the lining structure is arranged to be of a three-layer structure, the rigidity of the three-layer structure is designed in a differentiated mode, the scouring and abrasion layer on the outermost layer adopts high strength provided by UHPC to resist high-speed sand-containing water flow, and the buffer layer on the middle layer adopts rubber powder modified concrete to buffer and digest impact and compensate deformation; and the fixed base layer of the bottom layer adopts the original waste base as the material, thereby being more environment-friendly and higher in construction efficiency.

A closet flange plug for sealing an opening of a closet flange and for being cut away by operation of a hole saw. The closet flange plug has an annular body portion for sealing the closet flange opening and a drill guide post concentrically disposed within the body portion. The drill guide post has a solid base portion of a material, such as polyvinyl chloride (PVC) thermoplastic, operative to bind in the hole saw drill bit. The annular body portion is adapted to be cut through by the hole saw. The drill guide post has an upper portion projecting above the annular body portion while the base portion projects below the annular body portion. A borehole concentrically disposed within the upper portion of the guide post has a portion sized to interfere with and be drilled into by the hole saw drill bit.

The utility model discloses a ballastless track beam body pre-embedded sleeve positioning tool, which relates to the technical field of constructional engineering, and comprises two positioning angle steels and a positioning plate, the side surface of each positioning angle steel is provided with a positioning groove, the lower part of the positioning plate is provided with a clamping groove, the number of the positioning angle steels is two, and the two positioning angle steels are arranged in parallel. The positioning plate is inserted above the positioning angle steel through the clamping groove; the positioning angle steel is made of angle steel materials, holes are accurately formed according to a bridge construction drawing to form the positioning groove, the width of the positioning groove is accurately matched with the diameter of the pre-embedded sleeve, and the clamping groove of the positioning plate and the inserting design of the positioning angle steel are matched, so that accurate positioning of the pre-embedded sleeve is guaranteed from multiple dimensions; the problem of position deviation caused by a traditional manual positioning mode is effectively solved, and a solid foundation is provided for accurate butt joint of follow-up construction parts.

The invention discloses foundation stable tamping equipment for engineering construction, which comprises a tamping vehicle, a connecting box body, a front frame, a compacting roller, a cleaning part, a swing tamping part and a dust falling part, the compacting roller is rotatably connected between the inner walls of the front frame, the connecting box body and the front frame are integrally arranged, and the interior of the connecting box body is a cavity for storing water; a cab is arranged at the upper end of the tamping vehicle, and the bottom of the cab is fixedly connected with the connecting box through a connecting component. A swing plate of the swing tamping part achieves reciprocating swing through a fixing shaft and a torsion spring matched with a half-gear and full-gear driving mechanism, a heavy striking block is driven to repeatedly hammer a foundation, the compactness and stability of the foundation are remarkably improved, a solid foundation is laid for follow-up building construction, meanwhile, soil attached to the surface of a compaction roller can be removed in time, and the construction efficiency is improved. Rugged compacted ground caused by dirt accumulation is avoided, and it is ensured that the foundation compacting effect is uniform and stable.

The utility model belongs to the technical field of crushing devices, and particularly relates to a crushing device for solid waste concrete treatment, which comprises a base, a crushing mechanism is arranged on the base, a screening mechanism is arranged on the crushing mechanism, the crushing mechanism comprises a support, the support is fixedly mounted on the base, a box body is arranged at one end of the support, and the screening mechanism is arranged at the other end of the support. And the inner wall of the box body is rotationally connected with a crushing roller. By arranging the crushing mechanism, the purpose of crushing solid waste concrete is achieved, the capability of synchronously driving the conveying belt to operate is further achieved, through the design, the crushed solid waste concrete can be rapidly transferred, the efficiency of the treatment process is effectively improved, and meanwhile, by arranging the screening mechanism, the screening efficiency is improved. And the crushing mechanism can be cooperatively started during operation, so that the crushed solid waste concrete can be immediately screened, a solid foundation is laid for subsequent fine treatment of the solid waste concrete, and the practicability and high efficiency of the whole treatment scheme are remarkably enhanced.

The invention relates to the technical field of acid-proof brick manufacturing, and discloses a method for preparing an acid-proof brick by using waste electrical porcelain, and the method comprises the following steps: S1, preparing materials: Guangxi white mud, Yichun kaolin, half-shan mud, dark-bottom washing mud, Ningxian soil, waste electrical porcelain powder, Hengyang brand mud, Guangdong black mud and Wangxian stone; s2, after the raw materials are metered according to the weight percentage, adding the raw materials into a 15-ton ball mill for ball milling for 8 hours; according to the method for preparing the acid-proof brick by using the waste electroceramics, raw material preparation and pretreatment are basic links in acid-proof brick production, stability and consistency of product performance are ensured by accurately metering and proportioning various raw materials, excellent acid resistance is provided for the product by adding high-aluminum raw materials such as Guangxi white mud and Yichun kaolin, and meanwhile, the product quality is improved. Through the pretreatment steps of ball milling, iron removal, mud squeezing, pugging and the like, the uniformity and plasticity of the mud are effectively improved, and a solid foundation is laid for subsequent forming and sintering.

According to the scratching and stripping structure, device and method for RAP material surface treatment, the scratching steel brush is used for scratching the stone surface in the RAP material, and an asphalt film is effectively stripped; when encountering stones with larger size or stronger impact force during working, the stones can directly impact the movable plate instead of the rigid structure, the impact force can drive the movable plate to stably move towards the fixed bottom plate along a guide groove formed by the guide piece, and the elastic mechanism between the movable plate and the fixed bottom plate is synchronously extruded to generate elastic deformation; instantaneous rigid impact of stones on the device is converted into buffering energy absorption of an elastic mechanism, and most impact energy is absorbed and dissipated through elastic deformation, so that counter-acting force acting on the stones is greatly buffered and weakened, the stones are prevented from being broken or cracked due to impact, and the service life of the device is prolonged. The physical integrity and original gradation of the stones are guaranteed to the maximum extent, and a solid foundation is laid for subsequent high-value recycling.

The utility model discloses a road slope ecological protection structure, which belongs to the technical field of ecological protection and is characterized by comprising a mounting mechanism, a guide mechanism is arranged at the top of the mounting mechanism, and the mounting mechanism can be firmly inserted into soil to stably fix the whole protection structure on a road slope. Displacement or toppling of the structure due to slope soil loosening and the like is effectively prevented, continuous exertion of the protection function is guaranteed, a solid foundation is laid for slope protection, a plurality of installation mechanisms can be spliced and combined, the scale of the whole protection structure can be flexibly adjusted according to the length of the slope, the structure can adapt to road slopes of different lengths, and the protection effect is good. According to the structure, the flexibility and universality of installation and use of the structure are enhanced, the guiding mechanism can protect and limit plants, meanwhile, rainwater can be collected and guided, plant root necrosis caused by excessive accumulated water is prevented, drip irrigation can be conducted on the plants, water waste is reduced, and the utilization efficiency of water resources is improved.

The invention discloses a high-precision convenient constructional column upper reinforcing steel bar positioning device, and relates to the technical field of building construction equipment, the high-precision convenient constructional column upper reinforcing steel bar positioning device comprises a positioning plate, the two sides of the positioning plate are provided with abutting rods, the two sides of the two abutting rods are provided with pushing rods, and the surfaces of the two sides of the positioning plate are each provided with a set of first arc-shaped grooves; the two opposite sides of the two abutting rods are each provided with a set of second arc-shaped grooves, a fastening assembly is arranged on the positioning plate and comprises two sets of clamping rods, the surface of each clamping rod is provided with a third arc-shaped groove, and the bottom end of each clamping rod is fixedly connected with a sliding block; the steel bar positioning device is high in positioning accuracy, the steel bars are clamped in a multi-face cooperative mode through the positioning plate, the abutting rods and arc-shaped grooves specially designed in the clamping rods, displacement of the steel bars in all directions is effectively limited, the positioning accuracy is remarkably improved, meanwhile, a mechanical transmission system promotes all components to act synchronously, the consistency of multiple steel bars during positioning is ensured, and the positioning accuracy is improved. And a solid foundation is laid for subsequent construction.

The application provides a supported solid base deacidification and dewatering material and a preparation method thereof. The preparation method of the supported solid base deacidification and dewatering material comprises the following steps: (1) mixing γ-alumina, magnesium hydroxide and starch once to obtain dry mixture; (2) adding acid solvent and alcohol solvent to the dry mixture to perform secondary mixing to obtain wet mixture; (3) performing extrusion granulation, drying and calcination on the wet mixture to obtain first precursor; (4) grinding and mixing calcium carbide and the first precursor to obtain second precursor; and (5) packaging the second precursor by using PP melt-blown cloth to obtain the supported solid base deacidification and dewatering material. When the supported solid base deacidification and dewatering material is used, solid impurities can be effectively prevented from adhering to the surface to affect the activity, and the material loss can be effectively avoided, so that the deacidification and dewatering efficiency is improved.

A volumetric additive manufacturing (VAM) process for producing a solid object having a surface layer of a multifunctional material patterned thereon involves: contacting a surface of a solid base object with a liquid composition containing a photo-initiator and a multifunctional material covalently graftable to the surface of the solid base object; and, selectively irradiating the composition at the surface of the solid base object with patterned light, the irradiating being tomographic, to initiate covalent grafting of the multifunctional material to the surface of the solid base object to pattern only a portion of the surface of the solid base object with a layer of the multifunctional material grafted thereon, where the portion of the surface of the solid base object corresponds to the selectively irradiated surface of the solid base object.

The application relates to the technical field of big data and discloses a municipal road construction method and system based on BIM. The method and system collect basic data through big data technology and laser scanning and other means, form a database, eliminate information islands, reduce misunderstandings and delays caused by information asymmetry, and secondly, through the establishment of a complete city BIM model, collision detection of underground pipelines and road structures is realized, the safety hazards and economic losses in construction are reduced, meanwhile, virtual simulation technology enables each link of the construction process to be preplayed, the construction sequence and resource allocation are optimized, finally, through real-time data comparison and dynamic adjustment, the deviation in the construction process can be found and corrected in time, so that the construction quality and progress are ensured, a series of measures not only improve the overall efficiency of construction, but also lay a solid foundation for subsequent road operation and management, and promote the transformation of the construction industry to digitization and intelligentization.