1054 results about "Composite slab" patented technology

The invention belongs to the technical field of road engineering, and particularly relates to a method for detecting the fatigue performance of an asphalt pavement, which comprises the following steps: firstly, manufacturing a composite small beam for detection: manufacturing a water-stable layer by using a concrete material; then a blocking agent is applied to the top face of the water-stable layer, so that bonding between the asphalt surface layer and the water-stable layer is blocked, the effect that interlayer thorough disengaging and bonding failure are achieved, and interlayer damage is simulated; paving an asphalt surface layer on the top surface of the cement-stabilized layer and compacting to form a test composite board, and cutting the test composite board to form a composite small beam; and putting the composite small beam into a fatigue testing machine, and repeating the loading times to obtain the fatigue life of the composite small beam. According to the scheme, a method for researching the influence of the interlayer state on the fatigue performance of the asphalt pavement is provided, and corresponding rationalized suggestions and theoretical bases can be provided for design and construction of the asphalt pavement based on the analysis; according to the method, the interlayer damage of the actual asphalt pavement is simulated, so that the detection accuracy is very high.

The utility model discloses a double-layer transportation device for an assembly type laminated slab component, and particularly relates to the technical field of transportation devices, which comprises an upper-layer I-shaped steel freight frame, bracket upright posts and a bottom-layer I-shaped steel freight frame, the bottom-layer I-shaped steel freight frame is connected with the upper-layer I-shaped steel freight frame at least through four bracket stand columns which are uniformly distributed; one end of each bottom-layer I-shaped steel freight frame is connected with a bracket stand column through a bracket base, the bottom of each bracket stand column is fixedly installed on the top of the corresponding bracket base, and the top of each bracket stand column is detachably connected with the end of the corresponding upper-layer I-shaped steel freight frame. The upper-layer I-shaped steel freight frame, the bracket stand columns, the bracket base and the bottom-layer I-shaped steel freight frame are constructed into the double-layer freight frame, so that the upper-layer I-shaped steel freight frame and the bottom-layer I-shaped steel freight frame can be used for storing and transporting laminated slabs, a traditional single-layer laminated slab freight frame is replaced, the transportation time is greatly saved, and the transportation efficiency is improved. Freight cost is reduced, and overall construction efficiency is improved.

The invention discloses a steel pipe truss assembly type prestressed concrete laminated slab, and relates to the field of concrete laminated slabs. Comprising an internal PVC pipeline arranged in a concrete laminated slab, a PVC pipeline and a first internal steel pipe truss which are poured and fixed in the concrete laminated slab, and an external steel pipe truss which is connected to a second internal steel pipe truss in a threaded fit manner; when the grouting mechanism is connected to the end of the PVC pipeline, concrete sequentially passes through the PVC pipeline, the internal PVC pipeline, the first internal steel pipe truss, the second internal steel pipe truss, the external steel pipe truss and the grouting hole to be injected into the peripheral connecting position of the concrete laminated slab. The concrete laminated slab is provided with three modules, and the purposes that the connecting strength of the connecting positions of the concrete laminated slab is improved, concrete is convenient to pour and fix, and the position of the concrete laminated slab is convenient to adjust can be achieved.

The invention provides a composite pile foundation structure for road surface rigidity optimization of a road transition section and a design and use method of the composite pile foundation structure, and relates to the technical field of composite pile foundations. The composite pile foundation structure can be applied to an embankment foundation and a bridge abutment pile foundation and comprises a bearing platform, a pile cap, a gasket, an elastic composite plate, replaceable filler, a pile and a pile end self-adaptive deformer. The design and use method of the bridge abutment pile foundation is guided by the load settlement characteristic of the butted roadbed, and the design and use method of the embankment composite pile foundation is guided by the settlement control standard. Design variables comprise the pile length, the pile diameter, the pile number, the compression thickness of the elastic composite plate, the arrangement depth of the replaceable filler, the limit pile side friction resistance of the replaceable filler and the compression modulus of the replaceable material, the structure can optimize the overall rigidity of the road surface on one side of the abutment, the phenomenon of bump of the abutment is effectively avoided, zero-differential settlement is achieved theoretically, and the construction efficiency is improved. And the settlement index can be controlled in the application of an embankment foundation.

This invention relates to insulated wall-sheathing (IWS) panels, a panel assembly comprising such panels, and systems for use in building construction designed to provide moisture permeable panels that protect from bulk water, excess air, and thermal transfer. More specifically, this invention relates such panel used for construction purposes, comprising an insulation layer; a wood-composite panel; a nail-gasketing adhesive layer; and a weather-resistive barrier layer; wherein the weather-resistive barrier (WRB) layer exceeds the dimension of the wood-composite panel from at least one of its edges to create an extension flap; and wherein the extension flap of the WRB layer further comprises a removably attached release-liner on its back.

The utility model discloses a TPO waterproof composite board metal roof, and relates to the technical field of building curtain walls. Aluminum alloy supports are fixedly arranged at the top ends of the galvanized steel sections, positioning blocks are fixedly arranged at the top ends of the aluminum alloy supports, a metal roof panel is arranged between the two aluminum alloy supports, a first bend is arranged on one side of the metal roof panel, and the outer side of the first bend is movably clamped on the positioning blocks. A second bend is arranged on the side, away from the first bend, of the metal roof board. The aluminum alloy support is fixed to the galvanized steel through the screws, the first bend of one metal roofing board is movably clamped to the positioning block, and then the second bend of the other metal roofing board is movably clamped to the first bend, so that the situation that the metal roofing is affected by the temperature to generate fatigue can be avoided; the heat preservation cotton can prevent heat from being conducted in in summer and indoor heat from losing in winter, and the sound absorption cotton can reduce indoor to outdoor or outdoor to indoor noise transmission.

The utility model relates to a subway station cast-in-place concrete side wall large steel formwork supporting system which comprises a bottom plate and a large steel formwork, the bottom plate is provided with a side wall base corresponding to the bottom of a side wall, and a side wall reinforcement cage is bound on the side wall base; the large steel die is arranged on the bearing beam and comprises a large steel die panel, a large steel die support and a cantilever operation platform, the large steel die panel abuts against the side face of the side wall base, the large steel die support is fixed to the back face of the large steel die panel, and the cantilever operation platform is arranged at the top of the large steel die support. The utility model has the beneficial effects that by arranging the bearing beam and the sliding beam structure, the high-precision adjustment of the large steel mould is realized by utilizing the longitudinal jack and the transverse jack, and the sliding resistance can be effectively reduced by fully paving the stainless steel composite plates on the top surface of the bearing beam; three hydraulic rod mounting structures are provided and can be used for solving the problems that a foundation pit inner support exists on a large steel mold, a reverse top plate exists on the large steel mold, and neither the foundation pit inner support nor the reverse top plate exists on the large steel mold.

A brazing-sheet manufacturing method includes superposing a core-material slab on or adjacent to at least one surface of a filler-material slab to form a clad slab, the core-material slab being composed of an aluminum material and the filler-material slab being composed of an Al—Si—Mg series alloy. Then, the clad slab is hot rolled to form a clad sheet having a core material layer composed of the aluminum material of the core-material slab and a filler material layer composed of the Al—Si—Mg series alloy of the filler-material slab. Then, the clad sheet is subjected to one or more passes of cold rolling. Either between cold-rolling passes or after the completion of the cold rolling, a surface of the clad sheet is etched using a liquid etchant that includes one or more inorganic acids. The liquid etchant does not contain fluorine atoms.

The invention discloses a composite curtain wall system with a wing type decorative grating and a construction method, and relates to the technical field of decorative composite curtain walls. The method comprises the following steps of construction scheme compilation and demonstration, scheme disclosure, construction preparation, civil engineering transfer, civil engineering structure error check, surveying and setting out, post-repair embedded part installation, post-repair embedded part pull-out test, connecting part installation, keel installation and curtain wall fire prevention. Installation of a lightning protection system, hidden acceptance, installation of glass plates, installation of aluminum single plates, installation of aluminum composite plates, installation of decorative grids, and ash removal and gluing. According to the invention, in a decoration project with short construction period, accurate and rapid construction and high-quality adjustment of each unit module of the composite curtain wall are effectively realized, each component is assembled and mounted in the whole course, secondary processing procedures on site are reduced, the construction is convenient and fast, the construction efficiency of decoration, brightening and drainage projects is improved, and the construction cost is reduced. And meanwhile, secondary damage to each system component by a construction site is also avoided, and the loss rate is reduced.

The invention belongs to the technical field of bridge engineering, and particularly discloses a steel shell-concrete composite orthotropic bridge deck slab structure and a preparation method. Comprising an upper steel plate, a lower steel plate and a plurality of perforated T-shaped ribs, the upper steel plate and the lower steel plate are arranged in parallel, the perforated T-shaped ribs are arranged in parallel in the longitudinal direction, webs of the perforated T-shaped ribs are welded to the upper steel plate, and flanges of the perforated T-shaped ribs are riveted to the lower steel plate. The upper steel plate and the lower steel plate are connected to form a steel shell structure, and the upper steel plate and the lower steel plate are anchored in the filled concrete through the reinforced concrete tenons and the shear studs formed by the perforated T-shaped ribs and the core rod steel bars, so that the steel shell-concrete composite plate which is stressed together is formed. The anti-bending rigidity is large, the fatigue problem of welding seams of the stiffening ribs and the steel top plate is solved, the performance of the steel shell and concrete is fully played, and the problems that a traditional combined bridge deck slab is prone to cracking under the action of hogging moment and is too heavy are solved.

The invention relates to the technical field of special equipment for energy-saving building material production, in particular to production equipment for an assembly type module heat preservation and sound insulation composite board, which comprises a belt conveyor, a plurality of square casting molds are uniformly distributed on the surface of a belt of the belt conveyor, and two gantry trusses are arranged on two sides of the belt conveyor. An automatic alkali-resisting glass fiber mesh placing device and an automatic XPS plate placing device are arranged at the bottoms of the two door-shaped plates respectively, an automatic alkali-resisting glass fiber mesh pressing device is arranged at the position, located between the two gantry type trusses, of the top of the belt conveyor, and shear type lifters are arranged on the positions, located in the two gantry type trusses, of the outer side of the belt conveyor. The problems that the production efficiency is low, the laying precision is poor, the product consistency and stability are insufficient, and multi-specification production requirements are difficult to meet when alkali-resisting glass fiber screen cloth and XPS plates are laid manually are solved.

The present disclosure provides a production method and a mold for a ribbed prestressed composite slab of self-compacting concrete, including a long-line table bottom mold, side molds, end molds and a top mold. Side molds are respectively connected to the long ends of the long-line table bottom mold. The top mold is arranged at the upper end of the long-line table bottom mold, and both ends of the top mold are respectively connected to the corresponding side molds. End molds are respectively connected to the short ends of the long-line table bottom mold, and the shape of the upper edge of the end mold matches the shape of the side edge of the top mold. Both ends of the end mold are respectively connected to the corresponding side molds to form a cavity with an accommodating space. A number of holes through which prestressed steel wires can pass are provided on the end mold, and leak-proof plugs are detachably connected to the holes. The structure of the present disclosure is simple, which can make the construction of prestressed concrete composite slabs faster and more convenient, and at the same time can reduce the labor intensity of workers and improve production efficiency.

The invention discloses a process for preparing a 3 + 1 titanium-steel composite plate, which comprises the following steps: by adopting a symmetrical assembly rolling method, enabling an assembly mode to sequentially comprise a steel plate, a titanium plate, a titanium plate and a steel plate from top to bottom, forming two groups of titanium-steel composite plates at one time, further rolling through a rolling process of a plate factory, and carrying out plate separation treatment after rolling is completed, two titanium-steel composite plates can be prepared at a time; and meanwhile, the problem of warping in the preparation process of the single titanium-steel composite plate is effectively prevented by adopting symmetrical assembly. In the process of preparing the titanium-steel composite plate through the technology, the two titanium plates are dry-wiped once through the non-woven fabric, ethyl alcohol is scattered after wiping is completed, new non-woven fabric is used for wiping twice in the forward direction 1-2 minutes after ethyl alcohol is scattered, and after the titanium plates are cleaned, separants are smeared on the surfaces of the upper sides and the lower sides of the titanium plates correspondingly; uniformly covering the titanium plate with the separant; and then the upper steel plate and the lower steel plate are welded through the steel bars, non-woven fabric and absolute ethyl alcohol are used again for wiping and dry wiping in the welding process, dust on the surface of the blank is removed till it is checked that the whole blank is free of oil and ash, and the composite blank subjected to argon arc welding bottoming is welded through welding rods. The welded composite blank is hoisted to a welding support to be vertically placed, vacuumizing treatment is carried out while the composite blank is welded, the steel plate and the titanium plate are tightly attached together through welding, meanwhile, the titanium plate and the steel plate are further extruded under the action of atmospheric pressure through vacuumizing, and the titanium plate and the steel plate are welded; the problems that the plastic deformation capacity difference of an existing titanium plate and an existing steel plate is large, and deformation is not coordinated are solved.

The invention relates to the technical field of intelligent positioning of building construction, in particular to an intelligent positioning method and system for fabricated building laminated slabs based on AR and UWB. According to the method, a physical monitoring network comprising a UWB positioning base station and a visual positioning target is constructed, a digital operation instruction generated by analysis of a cloud BIM model is converted into a virtual contour superposed on a real operation plane by using an AR augmented reality technology, and further, the position deviation is calculated in real time and a sound-light alarm mechanism is combined, so that the real-time positioning of the cloud BIM model is realized. A construction quality closed-loop control system of real-time monitoring, alarming, adjusting and compliance is established, it is ensured that the laminated slab meets the design precision requirement in the installation process, and later reworking and rectification caused by installation errors are effectively avoided; meanwhile, based on data interaction of the cloud BIM management platform, full-process digital management from design model issuing to final installation position data returning is achieved, and reliable data support is provided for construction quality tracing and acceptance of the fabricated building.

The invention relates to the technical field of assembly type building engineering, in particular to a laminated side wall system for an underground station and a construction method of the laminated side wall system, the laminated side wall system comprises a single-face laminated side wall and a double-face laminated side wall, and the single-face laminated side wall or the double-face laminated side wall is selected for construction according to different construction conditions. The single-face laminated side wall is composed of an inner side prefabricated reinforced concrete laminated plate I and a cast-in-place layer I. The double-face laminated side wall is composed of an inner side prefabricated reinforced concrete laminated plate II, an outer side prefabricated reinforced concrete laminated plate and a cast-in-place layer II. When the underground diaphragm wall needs to be adopted for foundation pit supporting, the single-face overlapped side wall is adopted; when the underground diaphragm wall is not needed for foundation pit supporting, the double-face overlapped side wall is adopted. The superimposed side wall system for the underground station and the construction method thereof have the advantages of being high in adaptability, high in construction efficiency, good in connection performance, low in construction cost, convenient to transport and assemble, good in waterproof effect and the like, and are particularly suitable for the field of fabricated building engineering such as the underground station.

The invention discloses a high-strength waterproof heat-preservation composite board which comprises an upper surface layer, a lower surface layer and a heat-preservation core material arranged between the upper surface layer and the lower surface layer, and further comprises a three-dimensional skeleton which is embedded in the heat-preservation core material, is used for providing a mechanical supporting frame for the whole composite heat-preservation board and can be actively repaired when being damaged. The three-dimensional framework is composed of a Z-direction fiber column, an integrated upper surface net layer and an integrated lower surface net layer, the upper surface net layer and the lower surface net layer are connected to the upper end and the lower end of the Z-direction fiber column, a cavity is formed in the Z-direction fiber column, and the cavity is filled with repairing fluid. A force transmission network is constructed through cooperation of three-dimensional framework gradient distribution and a dislocation anchoring system, the overall rigidity is ensured, meanwhile, the edge stress area is enhanced, interlayer stripping is avoided, and the bending resistance and impact resistance are improved. The surface microcapsules and the internal Z-direction fiber column repairing fluid form a dual self-healing mechanism, so that full-scale repairing from microcracks to through damage is realized, the durability of the material is improved, and the maintenance cost of the whole life cycle is reduced.

The invention belongs to the technical field of stainless steel composite plates, and particularly relates to an iron-nickel stainless steel composite plate production process which comprises the following steps: performing plasma sputtering cleaning on a carbon steel base layer; the iron-nickel-stainless steel composite layer is subjected to laser micro-cladding treatment to form a micro-groove array, and a nano nickel-titanium alloy transition layer is preset in the micro-groove array; explosive cladding is carried out in a helium and argon mixed gas environment with the oxygen content smaller than or equal to 10 ppm, so that the carbon steel base layer and the iron-nickel-stainless steel cladding layer are subjected to interface metallurgical bonding to form a composite plate blank; the composite plate blank is hot-rolled and water-cooled to 500 DEG C or below after being heated and subjected to heat preservation; and the rolled composite plate blank is placed in mixed gas of nitrogen and hydrogen for isolation annealing, the bonding strength and the shearing strength are improved through an interface gradient diffusion layer composite structure constructed through the nanoscale, and interface oxidation and stress concentration in the rolling process are inhibited through asymmetrical rolling and a nanometer heat insulation coating; and multi-stage controlled cooling and diffusion barrier annealing are cooperatively regulated and controlled, so that the pitting corrosion resistance potential of the iron-nickel stainless steel clad layer is improved.

The invention discloses a UHPC (Ultra High Performance Concrete) formwork-removal-free combined node linear coupling beam shear wall and a construction process thereof. The UHPC formwork-removal-free combined node linear coupling beam shear wall comprises a post-cast reinforced concrete shear wall, a UHPC formwork-removal-free, a laminated slab, a concrete-filled steel tube positioning bolt and a shear wall embedded column, the UHPC non-dismantling formwork comprises a non-perforated formwork body and a perforated formwork body, perforated steel plates are evenly pre-buried in the inner side of the non-perforated formwork body and evenly pre-buried in the inner side of the perforated formwork body, round holes are reserved in the corresponding positions of the perforated steel plates, one side of a screw sequentially penetrates through the round holes of the perforated formwork body and the perforated steel plates, and the screw is arranged between the perforated formwork body and the non-perforated formwork body. The other side of the screw rod is preliminarily fixed through a first nut on the inner side of the non-perforated formwork, and U-shaped shear nails are arranged on the inner side of the non-perforated formwork and the inner side of the perforated formwork. According to the UHPC formwork-removal-free combined type node linear coupling beam shear wall and the construction process thereof, on-site quick assembly sealing and precise assembly are achieved, the formwork removal procedure is omitted, the assembly rate is increased, and the later maintenance cost is reduced.

The invention discloses a process for preparing a 12 +1.2 titanium-steel composite plate, which comprises the following steps: by adopting a rolling method of symmetrical assembly, sequentially arranging a steel plate, a titanium plate, a titanium plate and a steel plate from top to bottom in an assembly mode, forming two groups of titanium-steel composite plates at one time, further rolling through a rolling process of a plate factory, and carrying out plate separation treatment after rolling is finished, thereby obtaining the 12 +1.2 titanium-steel composite plate. Two titanium-steel composite plates can be prepared at a time; and meanwhile, the problem of warping in the preparation process of the single titanium-steel composite plate is effectively prevented by adopting symmetrical assembly. In the process of preparing the titanium-steel composite plate through the technology, the two titanium plates are dry-wiped once through the non-woven fabric, ethyl alcohol is scattered after wiping is completed, new non-woven fabric is used for wiping twice in the forward direction 1-2 minutes after ethyl alcohol is scattered, and after the titanium plates are cleaned, separants are smeared on the surfaces of the upper sides and the lower sides of the titanium plates correspondingly; uniformly covering the titanium plate with the separant; and then the upper steel plate and the lower steel plate are welded through the steel bars, non-woven fabric and absolute ethyl alcohol are used again for wiping and dry wiping in the welding process, dust on the surface of the blank is removed till it is checked that the whole blank is free of oil and ash, and the composite blank subjected to argon arc welding bottoming is welded through welding rods. The welded composite blank is hoisted to a welding support to be vertically placed, vacuumizing treatment is carried out while the composite blank is welded, the steel plate and the titanium plate are tightly attached together through welding, meanwhile, the titanium plate and the steel plate are further extruded under the action of atmospheric pressure through vacuumizing, and the titanium plate and the steel plate are welded; the problems that the plastic deformation capacity difference of an existing titanium plate and an existing steel plate is large, and deformation is not coordinated are solved.

The invention discloses a mixed structure for reinforcing an existing concrete frame through an externally-attached self-resetting supporting frame and a construction method. The mixed structure is composed of the externally-attached self-resetting supporting frame, a prefabricated composition board and the existing concrete frame. Wherein the externally attached self-resetting supporting frame, the prefabricated composition board and the existing reinforced concrete frame are sequentially connected through pre-embedded U-shaped bolts and post-embedded anchor bolts. The externally-attached self-resetting supporting frame is composed of a prefabricated prestressed concrete column, a prefabricated prestressed hybrid beam, a self-resetting steel support and a prefabricated foundation. Wherein the prefabricated prestressed hybrid beams are connected with the prefabricated prestressed concrete columns through bolts; the prefabricated prestressed concrete column is connected with the prefabricated foundation through an embedded anchor bolt; the self-resetting steel supports are connected with the prefabricated prestressed concrete columns and the prefabricated prestressed hybrid beams through pin shafts, and in addition, the invention further provides a construction method of the frame. According to the invention, the low-disturbance, toughness and green anti-seismic enhancement of the existing concrete frame building can be effectively realized.

The utility model relates to a thin steel strip reinforced prestressed concrete laminated slab which comprises a concrete laminated slab and a thin steel strip, and the concrete laminated slab comprises prestressed reinforcements, slab distribution reinforcements and a concrete pouring layer; the prestressed steel bars and the plate distribution steel bars are longitudinally, transversely and evenly arranged and distributed in the middle of the concrete pouring layer. The multiple thin steel strips are embedded in the upper layer of the concrete laminated slab, and the length direction of the thin steel strips is parallel to the length direction of the prestressed reinforcements; the thin steel strip is of a porous structure; the thin steel strip is provided with a plurality of piercing round holes, the residual plates on the peripheries of the piercing round holes are turned downwards, and the residual plates are embedded into the concrete pouring layer. According to the thin steel strip reinforced prestressed concrete laminated slab, the prestressed tendons are arranged in the center of the slab, so that the slab is stressed uniformly, and the slab surface is prevented from warping; and the thin steel strip is pre-buried on the plate surface, so that the integral structure of the plate is enhanced, and other structures can be extended.

The present invention relates to the technical field of bridge engineering. Particularly disclosed are a steel shell-concrete composite orthotropic bridge deck structure and a fabrication method and device. The steel housing-concrete composite orthotropic bridge deck structure comprises a steel shell structure, infilled concrete, longitudinal and transverse stiffening ribs arranged at the bottom of the steel shell structure, and a deck-end connecting structure, wherein the steel shell structure comprises an upper steel plate and a lower steel plate that are arranged in parallel, and a plurality of perforated T-shaped ribs arranged in parallel in a longitudinal direction. Webs of the perforated T-shaped ribs are welded to the upper steel plate, flanges are riveted to the lower steel plate, the upper steel plate and the lower steel plate are connected into the steel shell structure, and reinforced concrete tenons formed by the perforated T-shaped ribs and core bar reinforcements and shear bolts anchor the upper steel plate and the lower steel plate in the infilled concrete to form a steel shell-concrete composite deck that bears loads jointly. The present invention provides high bending stiffness, solves the problem of fatigue at welds between the stiffening ribs and a steel top plate, fully utilizes the properties of a steel shell and concrete, and solves the problems of the crackability under a negative bending moment and excessive weight of a traditional composite bridge deck.

A deck board system for integrating artificial turf and drainage features includes a plurality of deck board panels, each with an extruded or pultruded panel body featuring an internal screw boss, an internal reinforcement strip, an overhang, a ledge, drainage openings on the topside, and underside openings. The system further comprises a finishing feature and an artificial turf layer. The overhang engages with adjacent panels, while the finishing feature straddles at least two panels and engages with the overhang. The artificial turf layer covers one or more deck board panels, providing a seamless and functional deck surface with integrated drainage capabilities.

A multi-floor structural assembly including a foundation level, a support column including a plurality of outer hollow longitudinal structures defining an interior passage, and a plurality of inner members. The plurality of outer hollow longitudinal structures are aligned end-to-end along a single axis, and the plurality of inner members are aligned end-to-end within the interior passage of the support column so that at least one end of at least one inner member is longitudinally offset from every longitudinal end of the plurality of outer hollow longitudinal structures: A first composite deck includes a first horizontal beam and a hold down bracket secures the column to the foundation. The support column extends upwardly beyond the horizontal beam of the first composite deck.

The utility model discloses a laminated slab installation auxiliary device which comprises a surrounding assembly and a supporting assembly, the surrounding assembly comprises a supporting seat, an adjusting block and a limiting plate, the supporting seat is detachably installed on an aluminum mold keel, the adjusting block is horizontally and movably installed on the supporting seat, one-way clamping teeth are arranged on the adjusting block in the length direction of movement of the adjusting block, and the limiting plate is installed at the end of the adjusting block; the clamping and fixing assembly comprises a pressing mechanism, a clamping plate and a return spring, the clamping plate is rotatably installed on the supporting base, the return spring is installed between the inner side of the clamping plate and the supporting base, the pressing mechanism is installed on the outer side of the end, away from the one-way clamping teeth, of the clamping plate, and in a natural state, under the action of the return spring, the one-way clamping teeth are clamped by the end of the clamping plate; when the composite slab is hoisted, the device is installed on an aluminum mold keel to assist in installation, accurate and rapid installation of the composite slab can be achieved, secondary adjustment through a crowbar is not needed, and therefore damage to waterproof devices is avoided.

Lightweight composite building panels with incorporated drainage layer that facilitates moisture removal and methods of manufacturing and using lightweight composite building panels with incorporated drainage layer. The lightweight composite building panels with incorporated drainage layer can be used to applied a desired finish to exterior wall and roof structures. The lightweight composite building panels include a core composite panel structure and a drainage layer attached or bonded thereto. The core composite panel structure includes a foam core sandwiched between first and second protective layers, such as a fiber mesh reinforced cementitious composition and / or cured thermoset resin or other rigid material. The drainage layer is designed to face an exterior wall or roof structure to facilitate removal of moisture between the panels and underlying wall or roof structure. The building panels can be cut, drilled, and screwed, nailed, or glued to structural elements of buildings, such as OSB sheathing.

The invention discloses a heat preservation and structure integrated building outer wall waterproof upward-moving structure, and relates to the technical field of building engineering. The heat preservation and structure integrated building outer wall waterproof upward-returning structure comprises waterproof coiled materials which are laid on the outer side face of an underground wall body structure and the outer side face, located below a cornice, of an overground wall body structure and laid on the bottom face, the outer side face and the top face of the cornice, and a coiled material head retracting structure of the waterproof coiled materials is located on the top face of the cornice; the first heat preservation layer is arranged between the waterproof coiled material and the heat preservation composite board and is arranged on the outer side face of the cornice; and the second thermal insulation layer is arranged on the outer side surface of the waterproof coiled material between the cornice and the underground wall body structure. The laying height of the waterproof coiled material is changed by adjusting the arrangement position of the cornice on the overground wall structure, and the waterproof coiled material can be directly connected with the wall structure, so that the bonding effect of a waterproof layer and the wall structure in the heat preservation and structure integration building outer wall is improved.

The invention provides a composite pile foundation structure for road surface rigidity optimization of a road transition section and a design and use method of the composite pile foundation structure, and relates to the technical field of composite pile foundations. The composite pile foundation structure can be applied to an embankment foundation and a bridge abutment pile foundation and comprises a bearing platform, a pile cap, a gasket, an elastic composite plate, replaceable filler, a pile and a pile end self-adaptive deformer. The design and use method of the bridge abutment pile foundation is guided by the load settlement characteristic of the butted roadbed, and the design and use method of the embankment composite pile foundation is guided by the settlement control standard. Design variables comprise the pile length, the pile diameter, the pile number, the compression thickness of the elastic composite plate, the arrangement depth of the replaceable filler, the limit pile side friction resistance of the replaceable filler and the compression modulus of the replaceable material, the structure can optimize the overall rigidity of the road surface on one side of the abutment, the phenomenon of bump of the abutment is effectively avoided, zero-differential settlement is achieved theoretically, and the construction efficiency is improved. And the settlement index can be controlled in the application of an embankment foundation.

The invention relates to a construction technology and a construction method for a composite pile foundation by recycling old piles. The method comprises the steps that firstly, a soil body is excavated to a certain depth on an old pile foundation, the integrity and durability of old piles are detected, and the old piles which do not meet the recycling requirement are cut off and abandoned; in order to improve the bearing capacity of the foundation, new cast-in-situ bored piles are complementarily driven below the elevation of the cut-off old piles, and a new and old pile combined bearing structure is formed; leveling the pile heads of the cut old piles and new piles, binding steel bars, and pouring to form a reinforced concrete laminated slab; and a second layer of new piles are constructed above the laminated slab, pile heads of the new piles and the reserved complete old pile heads are connected through a bearing platform to jointly bear, and finally the laminated pile foundation with the high bearing performance is formed. The use amount of new piles in old building and bridge reconstruction can be remarkably reduced, and carbon emission of a newly-built pile foundation project is reduced. Moreover, the second-layer structure of the laminated pile foundation can be backfilled with soil and can also be combined with underground parking lots, underground markets and the like, and a new building underground space utilization scheme is provided.