139 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.

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 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 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 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.

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.

This utility model relates to a formworkless cast-in-place STC steel-concrete composite bridge deck construction structure, including a side structure along the bridge length and an end structure along the bridge width. STC concrete is cast-in-place within the space enclosed by the end and side structures. The side structure includes a steel sheet, a filler layer, and sealant. The steel sheet is vertically welded to the top plate of the steel box girder. The filler layer is placed between the steel sheet and the perforated steel reinforcement of the bridge deck crash barrier on the outside of the steel sheet. Sealant is applied to the joint between the steel sheet and the top plate of the steel box girder. The end structure includes, from bottom to top, a leak-proof non-woven geotextile, an end baffle, and wooden joists placed on the top plate of the steel box girder, and also includes wire binding the end baffle and wooden joists together. This utility model enables rapid construction and ensures control over the end and side alignment and construction quality of the cast-in-place STC steel-concrete composite bridge deck, belonging to the field of bridge construction technology.

A composite construction board comprising a construction board subcomponent; and a double-sided adhesive subcomponent, where said double-sided adhesive subcomponent includes a non-rigid foam layer and first and second pressure-sensitive adhesive layers disposed on opposite sides of said non-rigid foam layer.

To provide a structure that can be easily set up by evacuees themselves at evacuation sites using standardized cardboard boards.SOLUTION: Wall panels 10 of standardized size and shape with rib members on both edges and a plurality of types of roof panels 20, 30, 40 with rib members on both edges are used, the rib members are bent outward to connect them, a polygonal pyramidal roof portion 70 is placed on a polygonal prism-shaped wall portion 60 to form a structure 1, a wall downward bent portion is provided below the wall panel, and the wall downward bent portion is bent outward to contact a floor. The central part of the wall panel 10 is made an openable part 15, a break line 13 and a fold line 14 are provided therearound, the break line 13 is cut, the openable part is opened to the right and left from a position of a central vertical line and folded along the fold line 14 to form an entrance and exit, to form a structure 1 to be installed inside a building. In addition, multiple structures 1 are integrated into a composite structure.SELECTED DRAWING: Figure 1

The invention provides a light sound-proof and moisture-proof wallboard and a manufacturing method thereof, the light sound-proof and moisture-proof wallboard comprises five layers of symmetrical composite structures which are respectively a first shock-resistant layer; a first fireproof layer; a sound-proof damp-proof layer; a second fireproof layer and a second impact-resistant layer; the first fireproof layer and the second anti-impact layer which are symmetrically arranged form an inner protective surface and an outer protective surface, so that the bending strength of the wallboard is improved by 300%, and the wallboard can resist impact of more than 10J; the sound wave sequentially penetrates through a first shock-resistant layer (high density), a first fireproof layer (damping sound absorption), the sound-proof and moisture-proof layer (cavity reflection), a second fireproof layer (secondary sound absorption) and a second shock-resistant layer (barrier), so that broadband sound insulation is realized; the sound-proof and damp-proof layer is wrapped by the symmetrical fireproof layer, fire prevention, damp prevention, sound insulation and light weight are integrated, meanwhile, the first impact-resistant layer, the second impact-resistant layer and the fireproof layer are completely symmetrical, the construction error rate is reduced, the center of gravity of the wallboard is centered through symmetrical stacking, the single-point hoisting bearing capacity is improved, and the transportation requirement of a super high-rise building is met.

[Problem] To efficiently construct a spar-type floating body at a low cost, and to simultaneously solve issues such as concrete temperature cracks and bending cracks. [Solution] A spar-type floating body 4 with the lower half thereof being imparted as a steel-concrete composite structure part 4A in which concrete C is cast to a prescribed thickness on the inner surface of an outer-shell steel member 10 that covers the outer periphery, and the upper half thereof having an outer-shell steel member 12 that covers the outer periphery and being imparted as a steel structure part 4B made entirely of steel members. In the steel-concrete composite structure part 4A, reinforcing bars embedded in the concrete C are formed by arranging assembly reinforcing bars 35 spaced at an interval P along the longitudinal direction of the floating body, each assembly reinforcement 35 comprising: an inner circumferential bar 36A arranged parallel to the outer-shell steel member 10 in a state of maintaining a prescribed cover K with respect to the concrete outer surface; and a zigzag-shaped truss bar 36B arranged so as to alternately connect, over each prescribed length, the inner circumferential bar 36A and the outer-shell steel member 10.

The application discloses a roofing waterproof repair system based on material compatibility and a construction method, belongs to the technical field of building waterproof repair, and comprises the following composite structure: a base treatment layer, V-shaped grooves are formed at roof cracks, a plugging layer is filled in the V-shaped grooves, and the plugging layer is a modified polyurethane sealant; an elastic waterproof coating layer, 3-4 mm thick high-elastic polyurethane waterproof paint is brushed on the surface of the base treatment layer; and a coiled material protection layer, a compatible layer is fully adhered after the elastic waterproof coating layer is dried, the compatible layer comprises 3 mm thick SBS modified asphalt waterproof coiled material, and the SBS modified asphalt waterproof coiled material and the high-elastic polyurethane waterproof paint are chemically crosslinked to form an integral waterproof layer. The roofing waterproof repair system based on material compatibility and the construction method are adopted, waterproof performance and anti-base cracking capability are improved, waterproof life is prolonged, material cost is saved, maintenance frequency is reduced, comprehensive cost is lowered, and various substrates can be adapted.

The application discloses a controllable foaming sand fixing anti-blast blasthole rapid plugging device and application, the device comprises a self-expanding mixed material filling strip, which is composed of an elastic friction bag, sand and gravel packed in the bag and a release device buried in the sand and gravel; the release device comprises a tank body, an end cover, a pull ring and a release hole provided with a pre-crack PE film, and the tank body is filled with polyurethane-based self-expanding material. When applied, the device is immersed and placed in a blasthole, and after being triggered, the material penetrates into the sand and gravel and is foamed and solidified. Through the synergistic effect of the polyurethane / sand and gravel composite structure and the elastic bag, the balance between flexible anti-blast and rigid enhancement is realized; the modular design improves the filling efficiency to the level of 30 seconds; the sand and gravel aggregate reduces the polyurethane consumption, and in combination with a flame-retardant system, the generation of toxic gases is inhibited, and the green construction demand is met.

The application discloses a kind of super-large area heavy load floor no-cut composite construction method, and it is different to carry out construction in sub-compartment joint, comprising: logistics channel area and door sub-compartment joint are handled using metal armoured joint;Other areas are handled using S-shaped force transmission rod construction joint.This application is different to carry out construction in sub-compartment joint in sub-region, realizes force transmission and deformation coordination, ensures that different sub-regions adjacent floor board whole force transmission error prevention platform, while allowing horizontal expansion and coordinating deformation, reduce crack to ensure that floor long-term stability.Metal armoured joint is connected with concrete by shear-resistant anchoring bolt, and S-shaped force transmission rod construction joint is connected with concrete by force transmission rod, to ensure that device does not displace during concrete pouring;Due to the setting of elastic pad, cement slurry leakage during concrete pouring can be effectively prevented, which affects the performance of the device and the flatness of the floor, and further sealing treatment is not needed, which can effectively save construction period.

The invention discloses a thermal stable diaphragm material for a lithium ion battery and a preparation method of the thermal stable diaphragm material, and the material solves the key problems of easy thermal runaway, deformation shrinkage, channel blockage and the like of the existing diaphragm under extreme working conditions by synergistically constructing a three-dimensional composite structure with high thermal stability, mechanical flexibility and ion permeability. The flexible lithium battery diaphragm has good large-scale preparation capability and engineering application prospect, cement which is a traditional building material is introduced into a flexible lithium battery diaphragm system for the first time, and a multi-scale synergistic ion guide channel system is constructed by utilizing the high thermal stability and natural porosity of the cement and combining a polymer flexible phase and an in-situ foaming process. The strategy not only realizes the morphological stability and thermal protection capability of the material under a high-temperature condition, but also significantly improves the ion permeability and interface electrochemical suitability, and breaks through the problem of performance balance between thermal stress and flexibility of the existing polyolefin and inorganic coating diaphragm. Besides, the whole system adopts low-cost raw materials, the preparation process can be completed under normal-temperature and normal-pressure conditions, high-temperature sintering, electrospinning or vacuum treatment is not needed, and the industrial popularization potential is extremely high.

The invention discloses a modular cast-in-place joint construction process for a superimposed assembly type pipe gallery, and belongs to the field of underground pipe gallery construction.The modular cast-in-place joint construction process comprises the steps that superimposed bottom plate, top plate, side wall and mid-partition prefabricated parts of the pipe gallery are transported to a construction site, and the connecting faces and reserved steel bars of all the parts are checked; the adjacent prefabricated parts are accurately aligned through a special positioning device, and it is ensured that the joint position meets the design requirement; the reserved steel bars of the adjacent components are connected in a mechanical connection mode, and an overall stress system is formed; a three-dimensional waterproof system of pretreatment, structure self-waterproofing and surface strengthening is constructed, the waterproof performance of the joint is improved from multiple levels, and the problem that a traditional technology is single in waterproof measure is solved; a pretreatment mode of combining a composite structure water swelling strip with a permeable crystallization type waterproof coating is adopted, a first waterproof barrier is formed before concrete pouring, and invasion of underground water is effectively blocked.

The application relates to the technical field of road rapid repairing methods, in particular to a base rapid repairing method for road collapse risks, which comprises the following steps: firstly, constructing a gravel framework; secondly, preparing a cement-based grouting material; then, injecting the cement-based grouting material into the gravel framework; next, curing the structure after grouting; finally, performing surface treatment; the application realizes perfect balance between repairing quality and construction efficiency. Rapid construction of the gravel framework and rapid solidification of the high-performance grouting material enable the whole repairing process to be completed in a very short time, so that the influence on traffic is greatly reduced. Meanwhile, the high-strength characteristics of the composite structure ensure that the repairing quality is not affected by rapid construction.