192 results about "Composite construction" patented technology

The invention belongs to the technical field of mining construction, and particularly relates to an artificial roof structure and a construction process thereof. The construction process comprises the steps that S1, anchor rod holes are constructed in the positions, 1 m away from a bottom plate, of two sides of a stope, S2, ore cushion layers with the thickness of 200 mm are laid and leveled, S3, I-shaped steel bottom beams are erected and fixed through round steel anchoring parts and welding base plates, S4, a reinforcing mesh is laid, main ribs and auxiliary ribs are bound in a crossed mode and welded to anchor rods, according to the composite structure design of the double-layer reinforcing mesh, the steel wire mesh and the hanging bar system, a three-dimensional stress system is formed, the bending resistance and the shearing resistance of the false roof are remarkably improved, the problem that a traditional false roof is prone to cracking and sinking is solved, and the false roof has the advantages of being simple in structure, convenient to use, economical and practical. Due to the layered matching design of the full-tailing cemented filling body, the bearing strength is guaranteed, seamless roof contact is achieved, the risk of roof hollowing is reduced, the pressure of stope operation circulation is relieved, the ore removal efficiency is improved, and the mining cost is reduced.

The invention relates to the technical field of material preparation, and discloses a nano-composite construction preparation method and system for a high-flexibility display film, and the method comprises the steps: setting a composite construction sequence corresponding to a nano-composite material; calculating the interface coupling bonding strength of the nano composite material in the compounding process, calculating the deformation adaptation coefficient of the display film substrate in the compounding process, and analyzing the dynamic synergistic compounding efficiency of the nano composite material; thermal gradient distribution data and pressure load data of the nanocomposite in the construction process are recorded, the stress relaxation rate in the display film after construction is completed is calculated, the uniform attenuation coefficient of the interlayer structure of the display film is calculated, and the multi-dimensional structure stability performance of the display film is evaluated; and determining a composite gradient distribution strategy of the nano composite material, formulating preparation process parameters of the display film in nano composite construction, and executing composite construction preparation of the nano composite material to obtain a finished product of the high-flexibility display film. According to the invention, the quality stability of the preparation of the high-flexibility display film can be improved.

Embodiments relate to an enhanced method for building walls by primarily reducing the time for assembly. The design is for a molded multi-segment plastic composite construction block that interlocks horizontally, vertically and orthogonally with a clearance-fit, does not require mortar for structural integrity and is self-aligning. The blocks are molded out of natural-fiber reinforced thermoplastic composites with thermal expansion coefficient less than 0.0002 per degree Celsius and compression strength greater than 60 MPa.

The invention relates to the field of slope prevention and control of water conservancy and hydropower engineering, in particular to a method for treating abnormal deformation of an upper-hard and lower-soft extra-high steep transverse slope during a construction period, which comprises the following steps of: constructing a three-dimensional geologic model based on multi-source data, and calibrating mechanical parameters of a rock mass and a structural surface in a manner of combining inversion analysis and field monitoring data; the synergistic effect of different supporting measures is quantified through numerical simulation, and a system treatment scheme is formed. Specific treatment is carried out according to the special failure mechanism of the composite structure with the hard upper portion and the soft lower portion, the progressive extrusion deformation characteristics of the lower soft rock are accurately recognized, the treatment strategy of deep anchoring, soft rock reinforcement and form regulation and control is adopted, anchor cables are adopted for deep reinforcement, consolidation grouting is applied for improving the mechanical property of the soft rock, and form control measures of slope ratio optimization are matched, so that the composite structure is obtained. And a multi-dimensional deformation suppression system is formed. The technical problems that in the existing abnormal deformation treatment process, supporting measures are not appropriate, a supporting scheme is lack of systematicness, and the treatment effect is poor can be solved.

The invention discloses a silicon mullite brick capable of being filled with a thermal insulation material and a production process thereof, and belongs to the technical field of refractory material production. The silicon mullite brick comprises a surface layer, a middle layer and an inner layer from outside to inside, the surface layer contains tabular corundum and silicon carbide micro powder, the middle layer contains mullite hollow balls, pre-sintered kyanite and nano-zirconia, the inner layer contains aluminum oxide hollow balls, floating beads and silicon carbide whiskers, and three-dimensional through pore channels are formed inside the silicon mullite brick. The pore channels are filled with silicon dioxide aerogel and ceramic fiber composite heat insulation materials, and the filling rate is larger than or equal to 85%. The production process comprises the steps of gradient material distribution, composite forming, in-situ foaming, vacuum impregnation strengthening, fluctuation sintering strengthening and the like. Through gradient composite structure design and multi-process cooperation, a three-dimensional functional partition is constructed, high-density filling and structural stability of the heat insulation material are achieved, mechanical strength and heat insulation performance are balanced, thermal shock resistance is remarkably improved, the service life is remarkably prolonged, and a novel refractory material is provided for high-temperature industrial equipment.

The invention discloses a soft soil area film bag sand blowing shortcut composite structure and a construction method, and relates to the technical field of highway engineering building construction shortcuts, the technical scheme is that the soft soil area film bag sand blowing shortcut composite structure comprises a film bag sand layer arranged at the bottom and a ballast layer arranged at the top of the film bag sand layer; the film bag sand layer comprises a third film bag sand layer arranged on the original ground or above the water surface, a first film bag sand layer and a second film bag sand layer, wherein the first film bag sand layer and the second film bag sand layer are arranged on the original ground or below the water surface, and the first film bag sand layer and the second film bag sand layer are filled with film bag green sand in a layered mode according to the water depth. The ballast layer is arranged on the top of the third film bag sand layer. The method has the beneficial effects that the working procedures of drainage, desilting, replacement and filling and the like are reduced, the construction period is shortened, the equipment investment and cost are reduced, and rapid forming of the shortcut is achieved. The film bag and the sand are combined to form a high-bearing-capacity compact block, sedimentation is prevented, the maintenance cost is reduced, and smoothness and progress are guaranteed. The mechanical conveying improves the efficiency, reduces the labor intensity, is free of waste, recoverable in sand, and meets the requirements of green sustainable development.

The invention provides an adjustable floating wind power foundation based on reinforcement learning and a modular construction method, and belongs to the technical field of offshore wind power. Comprising a fan, and the bottom of the fan is fixed to a tower drum; the bottom of the tower drum is fixedly connected with the floating base; the floating base comprises a first buoy, a second buoy and a third buoy which are arranged in a triangular shape; wherein the bottom of the tower drum is fixedly connected with the first buoy; the first buoy, the second buoy and the third buoy are fixedly connected through supporting steel pipes; the tower drum is fixedly connected with the second buoy and the third buoy through inclined supports; the buoy is further connected with an anchor chain, and the other end of the anchor chain is connected with the suction barrel and anchored to the seabed through the suction barrel. By adopting a coupling connection mode of the inclined support, the tower drum and the floating drum, the storm resistance of the whole structure is improved. A steel-concrete composite structure is adopted, the steel consumption is reduced, and the material cost is reduced. A modular construction method is adopted, the offshore construction time is greatly shortened, and the influence of weather and sea conditions on engineering is reduced.

The invention relates to the technical field of construction progress optimization, in particular to a water conservancy project construction progress dynamic correction system based on time sequence analysis, which obtains point cloud data of a construction excavation surface through three-dimensional point cloud scanning equipment, identifies and extracts structural feature information of the excavation surface, generates a structural mechanical model, and obtains the construction progress dynamic correction system based on the structural mechanical model. And in combination with material strength evolution data in the reinforcing material, multi-target optimization is carried out on the supporting scheme and the operation time sequence, and a dynamic operation instruction is output. Based on a composite structure model comprising a real rock mass structure and a real strength reinforcing system, performing rehearsal calculation on construction operation in the dynamic operation instruction to obtain the minimum safety margin of the composite structure, and when the minimum safety margin is higher than a preset threshold value, outputting a construction authorization signal, and when the minimum safety margin is lower than a preset threshold value, a construction forbidding signal is output, and supplementary reinforcement is triggered. Therefore, the active intervention capability in the construction risk is improved.

The invention relates to a composite structural member for an aircraft, an aircraft component, an aircraft, a method of forming a composite structural member by resin transfer molding and a method of designing a composite structural member. The composite structural member has a ramp region and comprises a plurality of composite plies arranged one on another in a thickness direction; wherein, in the ramp region, the composite plies comprise at least a first subset of composite plies and a second subset of composite plies, each subset comprising a plurality of composite plies; and wherein the second subset of composite plies is staggered in a ramp direction relative to the first subset of composite plies, the staggering resulting in a flat surface region on the second subset of composite plies which is suitable for use in use to seat a fastener thereon.

The application provides a circular shear wall-spiral anchor composite structure foundation and a construction method, and belongs to the technical field of electric power engineering.The upper reinforced concrete slab and the lower reinforced concrete slab are respectively located at the upper part and the lower part of the circular shear wall foundation, the prestressed longitudinal tendon is located in the circular shear wall foundation and is connected with the flange plate of the steel pipe pole through the foundation bolt after penetrating through the upper reinforced concrete slab; the anchor rod of the spiral anchor is connected with the spiral anchor joint after penetrating through the lower reinforced concrete slab, the bottom of the prestressed longitudinal tendon is connected with the spiral anchor joint, and the spiral anchor joint is connected with the spiral anchor joint reinforcing bar embedded in the circular shear wall foundation; the application can effectively reduce the foundation burying depth, thereby reducing the amount of reinforced concrete, reducing the excavation depth, and reducing the construction cost, the labor cost and the transportation cost.

This utility model provides a double-sided composite fireproof and heat-insulating board, relating to the technical field of fireproof and heat-insulating boards. It includes a wall, a moisture-proof component, and a protective component. A board is provided on one side of the wall, and a pressure plate is provided on the side of the board away from the wall. A moisture-proof layer is fixedly connected to one side of the pressure plate, and a fireproof layer is fixedly connected to one side of the moisture-proof layer. This double-sided composite fireproof and heat-insulating board, through the inclusion of the moisture-proof component, provides the following benefits during use: the pressure plate is impact-resistant and windproof; the moisture-proof layer prevents water vapor from entering the interior of the insulation board; the fireproof layer provides fire resistance and heat insulation; the insulation layer is used for the insulation core material; the vacuum layer improves the insulation performance; and the adhesive layer facilitates board installation. This achieves the effect of improving the device's moisture-proof performance, avoiding the situation where high humidity in the air during the rainy season in southern regions, coupled with indoor dampness, allows moisture to easily enter the core material, leading to internal moisture absorption and increased thermal conductivity.

The utility model discloses an aerogel coiled material prefabricated heat preservation structure for a high-temperature and high-pressure steam pipe network elbow, relates to technical application of heat preservation structures, and belongs to the technical field of energy conservation and low carbon. The aerogel prefabricated heat-insulation composite board comprises an aerogel prefabricated heat-insulation layer, a fastening belt and an outer protective layer. The aerogel coiled material prefabricated heat preservation layers are prefabricated by aerogel heat preservation coiled materials in batches according to the standard bend shape, the two aerogel coiled material prefabricated heat preservation layers are laid on a universal bend, the thickness of each aerogel coiled material prefabricated heat preservation layer is 30 mm, joints of the two aerogel heat preservation composite structures are arranged in a staggered mode, and the two aerogel heat preservation composite structures are arranged in a staggered mode. 45-degree notches of the same layer of aerogel heat preservation composite structures are connected. Construction joints at the elbows are remarkably reduced, the loss of aerogel coiled material blanking materials is reduced, the construction difficulty of the fishbone type elbows on site is reduced, heat is prevented from being transferred outwards through the joints, meanwhile, the device further comprises a fastening belt used for binding and fixing the composite aerogel heat preservation materials, the construction time is saved, and the heat preservation effect of the steam pipeline is guaranteed.

The utility model relates to the technical field of green constructional engineering piles, and discloses a green constructional engineering pile which comprises a shell assembly, reinforcing assemblies distributed in a matrix mode are installed in the shell assembly, buffering assemblies distributed in an annular mode are installed on the outer wall of the shell assembly, and connecting assemblies are connected to the two ends of the upper portion of the shell assembly in a clamped mode. The buffer assembly is arranged, vibration borne by the pile body can be effectively isolated, it is avoided that the vibration is transmitted to surrounding buildings or soil through the pile foundation, and interference to surrounding structures is reduced; the reinforcing assembly and the annular steel mesh are arranged, the steel mesh and pile body concrete can be combined to form a composite structure, the bending resistance, the shearing resistance and the tensile strength of the pile are effectively improved, the pile body is prevented from cracking or breaking under the load effect, the steel mesh can disperse external loads, stress concentration is avoided, the service life of the pile body is prolonged, and the annular steel mesh is made of galvanized steel materials. The fixing device can bear large loads, is suitable for scenes needing high safety, and meets the fixing requirements of complex shapes.

The invention discloses a composite structure phasing cycloid type oil-free crossed roller guide rail, and belongs to the technical field of crossed roller guide rails, the composite structure phasing cycloid type oil-free crossed roller guide rail mainly comprises a rotating ring, a sealing ring, a first positioning ring and a second positioning ring, and a V-shaped track groove is formed in the middle of the face, facing the first positioning ring and the second positioning ring, of the rotating ring; a pin mounting cavity is formed in the face, away from the V-shaped track groove, of the rotating ring, and pin tooth structures are distributed in the pin mounting cavity in the circumferential direction. Through the arrangement of the rotating ring, the first positioning ring, the second positioning ring, the rotating ring, the roller, the pin needle mounting cavity, the pin needle, the pin shaft driver and the V-shaped track groove, driving and guiding are coaxially integrated, assembly eccentricity and back clearance are eliminated, zero accumulative error and high repeated precision are achieved through the phasing cycloid structure, self-lubricating metal is matched with engineering plastic, complete oil-free operation is achieved, and the service life of the motor is prolonged. And due to the composite pin tooth structure of the pin shaft and the pin needle, friction, noise and heat productivity are reduced, and durability is improved.

The invention discloses an environment-friendly composite construction type tundish dry material and a preparation method thereof, and belongs to the technical field of refractory castable. The invention relates to an environment-friendly composite construction type tundish dry material which is divided into the following three parts according to tundish function partition and damage mechanism difference: a tundish bottom dry material, a tundish wall dry material and a tundish slag line dry material, the ladle bottom dry material is a forsterite dry material; the ladle wall dry material is in Rlt of molten steel in the ladle; when R of the molten steel in the ladle is larger than or equal to 1, the dry material is a ladle wall aluminum-silicon dry material, and when R is larger than or equal to 1, the dry material is a ladle wall magnesium dry material; the ladle slag line dry material is in Rlt of molten steel in the ladle; when R of the molten steel in the ladle is greater than or equal to 1, the dry material is a slag ladle line aluminum-silicon dry material, and when R of the molten steel in the ladle is greater than or equal to 1, the dry material is a slag ladle line magnesium-calcium dry material. According to different damage mechanisms of the tundish bottom, the tundish wall and the slag line area and the potential of hydrogen of molten steel, different dry materials are designed respectively, and through chemical compatibility matching of materials and working conditions, collaborative strengthening of permeation resistance of the tundish bottom, thermal shock resistance of the tundish wall and erosion resistance of the slag line is achieved.

The application discloses a high-permeability deep-water-level artificial lake anti-seepage composite structure construction method based on Ansys+BIM technology and relates to the technical field of artificial lake anti-seepage structure construction. The high-permeability deep-water-level artificial lake anti-seepage composite structure construction method based on Ansys+BIM technology utilizes BIM technology to construct a high-permeability deep-water-level artificial lake three-dimensional model, imports the BIM model into Ansys software for finite element analysis, analyzes the anti-seepage performance of the waterproof blanket under different conditions, analyzes the seepage law thereof by using Darcy's law, finally obtains actual technical parameters and an allowable deviation range in the construction process by simulating different scenes, and provides technical guidance and reference for high-permeability deep-water-level artificial lake anti-seepage composite waterproof blanket construction. The high-permeability deep-water-level artificial lake anti-seepage composite structure construction method based on Ansys+BIM technology solves the problems of low construction precision, complex technical process, excessive deviation, poor sealing performance and the like.

The invention discloses a method for constructing a digital twinborn model in a tensile damage process of a titanium-clad steel material, which is characterized by comprising the following steps of: S1, performing geometric modeling and grid division on a titanium-clad steel sample to be analyzed, setting boundary constraint, defining titanium steel contact and optimizing load distribution so as to establish a finite element model of a titanium-clad steel composite structure; s2, performing titanium-clad steel tensile test finite element analysis according to the titanium-clad steel composite structure finite element model, and establishing a titanium-clad steel sample tensile damage simulation model; s3, parameterizing an input quantity and an output quantity in the titanium-clad steel sample tensile damage simulation model by adopting an ANSYS Workbench platform, and then carrying out experimental design; s4, performing order reduction on the titanium-clad steel sample tensile damage simulation model subjected to experimental design by adopting a Response Surface Method response surface method to generate an order reduction model FMU file, and importing the order reduction model FMU file into ANSYS Twin Builder to construct a titanium-clad steel tensile damage model digital twin model; and S5, evaluating the digital twin model of the titanium-clad steel tensile damage model, and then carrying out titanium-clad steel tensile damage analysis. According to the method, the mechanical property data of the titanium-clad steel sample is obtained in the virtual space mapping model, and the entity operation state and the virtual space mapping result are comprehensively analyzed, so that the deep research on the tensile damage of the titanium-clad steel sample is finally realized, and the stability and the safety of the titanium-clad steel material in ocean engineering equipment are ensured.

The invention relates to the construction industry and can be used in the field of creating suspended ceilings, and more particularly in the creation of frame and board-type structures. A set of profiles for creating profile structures which include a base profile and a mounting profile and comprise elements of a damping connection in the form of a groove for a damper, a mating part and a damper, is characterized in that the set includes a number of mounting profiles configured in the form of one-piece structures, each of which is provided with a mounting ledge and a plastering element connected to one another by a base, and a number of mounting profiles configured in the form of composite structures consisting of two connectable parts, the first of which is provided with a mounting ledge, and the other of which is provided with a plastering element connected to a base, wherein each mounting profile in the set has the same height from the mounting ledge to the edge of the plastering element and has the same shape in terms of the plastering element. The technical result of the invention consists in simplifying the process of installing a suspended ceiling in the form of frame and board structures, addressing the problem of the hitherto limited range of technical solutions, and expanding the functional capabilities of the prior art with respect to the creation of wall-mounted joints.

The application provides a composite structure ultrafiltration membrane assembly, which comprises a shell, a water outlet is arranged at the top of the shell, a liquid inlet is arranged at the bottom of the shell, the shell is divided into a filtering area and a gas floating area which are in communication from top to bottom by a first resin sealing layer, the filtering area is divided into a liquid production area and a membrane area from top to bottom by a second resin sealing layer, membrane filaments are arranged in the membrane area, one end of the membrane filaments is embedded in the second resin sealing layer, and the membrane filament holes are in communication with the liquid production area, a waste liquid outlet is arranged below the second resin sealing layer, the gas floating area is provided with fiber fillers, and a dissolved gas releaser is arranged at one end of the liquid inlet close to the inside of the shell. The ultrafiltration membrane assembly of the application efficiently combines the gas floating structure and the ultrafiltration structure, the series connection between the two parts can be directly realized in the membrane cavity, the liquid level balance, pressure increase and decrease and other control links of other process modes are reduced, and the ultrafiltration membrane assembly has the advantages of high water production efficiency and small energy consumption.

The invention relates to a marine medical area cleaning air conditioner box structure which adopts a modular three-layer framework and comprises a panel assembly, a rack component and a decorative cover plate. The panel assembly is detachably connected to the outer side of the rack component, and the decorative cover plate covers the connecting portion of the panel assembly and the rack component. The panel assembly is of a four-layer composite structure and is filled with heat preservation materials, the rack component is composed of stainless steel cross beams, longitudinal beams, stand columns, a middle support and corner sealing plates, the heat preservation materials are attached to the outer surface of the rack component, and a multi-sealing structure is arranged between the panel assembly and the rack component. The problems that a box body of a traditional air conditioner for the ship is insufficient in sealing, bacteria are prone to breeding, and the cold bridge effect is caused are solved, and the requirements for low leakage rate and high cleanliness of a clean air conditioner in a medical area are met.

The present application relates to curtain wall construction technical field, specifically disclose a kind of photovoltaic roof glass curtain wall and daylighting roof glass curtain wall composite construction system, photovoltaic roof glass curtain wall and daylighting roof glass curtain wall composite construction system overall wave-like curved surface structure, including steel skeleton, curtain wall keel connected on steel skeleton, and hollow laminated glass panel and photovoltaic glass panel set on curtain wall keel, photovoltaic glass panel and hollow laminated glass panel are mutually spaced, steel skeleton overall is wave-like curved grid frame, steel skeleton includes horizontal steel beam and longitudinal steel beam, horizontal steel beam is the curved structure formed by the butt joint of multiple concave curves, longitudinal steel beam is linear structure, steel skeleton is equipped with decorative panel and the mounting bracket for fixing decorative panel, photovoltaic glass panel side edge and hollow laminated glass panel side edge are respectively sealed and fixed between aluminium profile subframe and aluminium alloy decorative strip, middle protrusion side.

The invention discloses high-viscosity modified asphalt and a preparation method thereof, and belongs to the technical field of asphalt materials, the high-viscosity modified asphalt comprises matrix asphalt, a tackifier, a styrene-butadiene-styrene block copolymer and a stabilizer, the mass ratio of the matrix asphalt to the tackifier to the styrene-butadiene-styrene block copolymer to the stabilizer is 100: (2-6): (2-6): (0.1-1); the tackifier comprises an epoxidized organic compound, a cross-linking agent and an accelerant, and the mass ratio of the epoxidized organic compound to the cross-linking agent to the accelerant is 100: (4-20): (0.5-3). According to the high-viscosity modified asphalt and the preparation method thereof disclosed by the invention, through composite construction of a thermally reversible network and a styrene-butadiene-styrene block copolymer (linear SBS) network, collaborative optimization among high-temperature performance, construction workability and low-temperature performance in a high-viscosity asphalt system is realized; the technical bottleneck that the three parts are difficult to consider in the traditional modification technology is broken through.

The application discloses a composite steel pipe single pile filled with recycled building materials and a construction method thereof, and belongs to the technical field of steel pipe piles. The composite steel pipe single pile comprises a steel pipe pile body, a cavity is arranged in the steel pipe pile body, the cavity is used for filling recycled building materials, a plurality of interface connecting mechanisms are arranged in the cavity, and a sealing mechanism is arranged on the top surface of the steel pipe pile body. By constructing a steel-filling core composite cross-section structure, the cross-section inertia moment and the overall bending stiffness are improved, the pile top displacement and bending deformation can be effectively reduced under the action of horizontal load, the single pile horizontal bearing capacity is improved by optimizing the cross-section stress system under the condition of controlling the steel consumption, and the structural material utilization efficiency is improved. The collaborative working capacity between the steel pipe and the filling body is enhanced through the interface connecting structure, the overall stress performance of the composite structure is improved, the air retention space in the steel pipe is reduced by filling the recycled building materials, the temperature and humidity fluctuations are alleviated, and the internal service environment is improved.

The utility model discloses a beam-column joint for steel reinforced concrete, which relates to the technical field of steel reinforced concrete and comprises a fixed column, connecting rods are respectively arranged at four corners of the fixed column, rotating blocks are respectively rotatably connected to the top ends of the connecting rods, and limiting grooves are respectively arranged at two ends of each rotating block. A guide rod is slidably connected to the interior of the limiting groove, and a beam shell is fixedly connected to the bottom of the guide rod. According to the beam-column joint for the steel reinforced concrete, the beam shells drive the rotating blocks to rotate, loads are transmitted to the guide rods of the two adjacent beam shells, pulling force or pushing force perpendicular to the surface of the fixed column is formed on the two adjacent beam shells, and due to the fact that the positions of the two adjacent beam shells are symmetrical relative to the fixed column, the pulling force or pushing force can be formed on the two adjacent beam shells. Therefore, tensile forces or thrust forces formed on the two adjacent beam shells are equal in magnitude and opposite in direction, so that the load is offset, and the effects of offsetting the load and protecting the stability of the fixing column are achieved.

The invention discloses a safe power-off device for power construction, and relates to the technical field of power construction, and the safe power-off device comprises a node control box and a far-end background, the node control box comprises a box body which is of a composite structure, and at least the inner layer of the box body is insulated; the number of the wiring terminals is multiple, at least one of the wiring terminals is an input terminal, multiple wiring terminals are output terminals, and any one input terminal and the multiple output terminals form a group and are distributed on the two sides of the box body respectively; the power-off mechanism comprises a power-off assembly and a controller connected with the power-off assembly; the controller is wirelessly connected to a far-end background, and the power-off assembly comprises a first power transmission assembly corresponding to the input terminal, a second power transmission assembly corresponding to the output terminal and a conduction assembly. According to the invention, economic loss can be reduced, power consumption of the masses can be improved, power construction can be safely powered off under more conditions, and the construction safety effect is guaranteed.

This invention relates to the field of tunnel engineering construction technology and discloses a synergistic proactive reinforcement method for TBM excavation. The method includes acquiring geological information of the surrounding rock ahead of the excavation face, formulating a drilling plan based on the length of the pre-treatment area, and drilling using an onboard drilling rig or directional drilling rig. A waveguide is inserted into the borehole, and a microwave generator is activated to radiate the surrounding rock, inducing a network of interconnected fractures within the rock mass using thermal stress. After cleaning the borehole, a grouting pipe is inserted and sealed, and chemical grout is injected. The grout permeates along the fracture network and solidifies within a predetermined time, cementing the fractured rock mass to form an artificial and natural composite roof support structure. The TBM cutterhead then excavates under the protection of this composite structure. This invention utilizes the synergistic effect of microwave fracturing and grouting modification to solve the problems of difficult grouting in low-permeability surrounding rock and the lag of traditional support methods, thereby improving roof stability and excavation safety.

The invention relates to a ceiling element for a building ceiling. The ceiling element is designed as a timber-concrete composite. The ceiling element comprises a timber component having one or more formwork structures, a concrete component comprising a precast slab and a cast-in-place concrete topping, a lattice girder, a connector, and a sleeve. The connector is inserted into the sleeve. The concrete component is connected to the timber component via the connector and / or the formwork structure.

A bio-composite construction material for use as a substrate for a tile, a shingle, or a building panel. The bio-composite construction material may be formed into a rigid or semi-flexible member. A hemp fiber component is mixed with a binding agent to create the bio-composite construction material. The rigid member utilizes hemp hurd fibers mixed with lime or clay and water to form a tile structure. The semi-flexible member utilizes hemp primary bast fibers to form an elongated structure that is flexible. Hemp lignin or a resin is used as the binding agent and the primary bast fibers may be woven or alternately layered to create a substrate for a roof shingle.

The invention relates to the technical field of building material manufacturing, in particular to a flame-retardant soundproof wallboard and a preparation method thereof. The flame-retardant soundproof wallboard is of a multi-layer symmetrical composite structure and sequentially comprises an external paper decoration layer, an external facing layer, an external bonding layer, a core layer, an internal bonding layer, an internal facing layer and an internal paper decoration layer from outside to inside. The core layer is a calcium silicate honeycomb structure plate, and honeycomb units of the core layer are regular hexagon holes; the external facing layer and the internal facing layer are both high-density fiberboards; the external bonding layer and the internal bonding layer are made of polyurethane hot melt adhesive or epoxy resin structural adhesive; and both the external paper decorative layer and the internal paper decorative layer are melamine impregnated paper layers. Through cooperation of materials and structures of all layers, the finished flame-retardant sound-insulation wallboard gives consideration to light weight and structural stability, the problem that the flame-retardant performance and the sound-insulation performance of a wallboard made of a single material are unbalanced is effectively solved, and the flame-retardant sound-insulation wallboard adapts to multi-scene installation requirements, has practicability and economical efficiency and can be widely applied to building decoration and indoor partition.

A bio-composite plastering material and a method of making the same are provided. The bio-composite plastering material includes a mixture of sand-silica, Abelmoschus esculentus powder, and multi-walled carbon nanotubes. The bio-composite plastering material has increased compressive strength depending upon the concentration of Abelmoschus esculentus powder and multi-walled carbon nanotubes used. The method of making the bio-composite plastering material includes sieving the sand-silica to produce sand-silica of a uniform particle size, mixing powdered Abelmoschus esculentus powder with the sand-silica to produce a first mixture, mixing water with the first mixture to produce the bio-composite plastering material, and enhancing the bio-composite material by adding multi-walled carbon nanotubes. The bio-composite plastering material may then be plaster cast, such as by pressing the bio-composite plastering material in a hot press and drying the resulting bio-composite material in an oven.