1157 results about "Mesh reinforcement" patented technology

The automatic production equipment for the U-shaped reinforcing mesh in the box girder comprises a straightening structure, a bending structure and a welding assembly, the straightening structure is arranged on the upstream portion of the bending structure, and the welding assembly is arranged on the downstream portion of the bending structure; the reinforcing steel bars sequentially pass through the straightening structures, the bending structures and the welding assemblies to form an inner U-shaped reinforcing steel bar net. Steel bars are automatically produced to form inner U-shaped steel bars, then the inner U-shaped steel bars are in lap joint with longitudinal steel bars conveyed in the limiting holes, a plurality of lap joint welding spots are welded and fixed through the first welding gun and the second welding gun, the inner U-shaped steel bar mesh with the stable structure is formed, automatic control is achieved in the whole process, and the production efficiency is high; meanwhile, manual intervention is avoided, and the formed inner U-shaped reinforcing mesh is good in consistency, high in strength and suitable for continuous large-scale production.

The invention provides a construction method of a CRTS III type slab ballastless track, and relates to the technical field of high-speed rail construction, and the construction method comprises the following steps: mounting base plate steel bars, side forms, end templates and limiting groove templates, placing foam plates at expansion joints, and reserving track slab pressing and anchoring holes; base plate concrete is poured, and base plate concrete formwork removal, surface finishing, maintenance and expansion joint construction are carried out after pouring; constructing a geotextile isolation layer and an elastic cushion layer; limiting groove steel bars and self-compacting concrete layer steel bar meshes are installed, and track plates are placed; before and after the track plate and the base plate are fastened by the pressing device, the track plate is finely adjusted by the fine adjustment device; and a self-compacting concrete formwork is installed, self-compacting concrete is poured, and post-pouring treatment and curing are conducted. The track plate and the base plate are fastened through the pressing device, so that the track plate, the base plate and the self-compacting concrete layer are tightly attached in the self-compacting concrete pouring period, and the situation that reworking or track laying is difficult due to the fact that the floating amount of the track plate is too large is avoided.

The application discloses a cast-in-situ concrete slope protection plate construction process, which comprises the following steps: measuring and lofting, determining the total construction range of the cast-in-situ concrete slope protection plate; extending and excavating a groove downward along the slope surface at the slope foot of the total construction range of the cast-in-situ concrete slope protection plate; leveling and tamping the slope surface in the total construction range of the cast-in-situ concrete slope protection plate; dividing the construction range of each cast-in-situ concrete slope protection plate on the slope surface; supporting the formwork of the cast-in-situ concrete slope protection plate on the slope surface; fixing the pre-bundled steel mesh of the cast-in-situ concrete slope protection plate, pouring concrete, ironing the concrete surface, and removing the formwork; supporting the formwork of the cast-in-situ concrete slope protection plate of the later-poured cast-in-situ concrete slope protection plate beside the previously-poured cast-in-situ concrete slope protection plate; fixing the steel mesh, pouring concrete, ironing the concrete surface, and removing the formwork. The application can avoid the seepage and overflow of concrete slurry along the bottom of the U-shaped structure formed by the formwork of the cast-in-situ concrete slope protection plate, reduces the waste of concrete, and facilitates the ironing of the concrete surface.

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 discloses a tunnel full-section excavation support forming construction method with an inverted arch. The method comprises the following steps that construction preparation is conducted; an arch frame is manufactured, the arch frame comprises an arch wall section and an inverted arch section, and the arch wall section and the inverted arch section are spliced and connected; performing drilling construction on the tunnel face to obtain blast holes, installing detonators in the blast holes, and performing blasting to obtain a tunnel section; trimming the contour line of the tunnel section; mounting the arch frame to the tunnel section, connecting a reinforcing mesh to the arch frame, and hanging the reinforcing mesh; wet-spraying concrete to the inverted arch section and the arch wall section to form a closed support ring; and the tunnel section is monitored and measured. According to the construction method, the problems that in the prior art, inverted arch construction often needs to be independently operated after an arch wall is closed, the opening time is long, the construction difficulty is large, a structure of'the arch wall is closed but the inverted arch is not closed 'is formed, circumferential stress is incomplete, and the overall stability is poor are solved.

The invention provides a multi-source dynamic disturbance rockburst combined support prevention and control system and method, and relates to the technical field of rockburst disaster prevention and control, the system comprises stress release holes, wave-absorbing grouting holes, energy-absorbing anchor rods and a passive pressure-bearing structure; the stress release holes are formed in a rockburst high-risk area of the tunnel surrounding rock; the wave-absorbing grouting holes are distributed around the rockburst high-risk area in a staggered mode, the wave-absorbing grouting holes are filled with wave-absorbing grouting materials, and a three-dimensional wave-absorbing grouting area is formed; the energy-absorbing anchor rod is arranged in the three-dimensional wave-absorbing grouting area; the passive pressure-bearing structure comprises a quick-setting concrete layer, a concrete layer containing rubber particles, a steel arch and a steel fiber concrete layer, the concrete layer containing rubber particles is arranged behind the reinforcing mesh, the steel arch is arranged behind the concrete layer containing rubber particles, and steel fiber concrete is arranged behind the steel arch. By constructing the pressure relief-wave absorption-energy absorption-passive pressure bearing four-stage combined supporting system, the safety and adaptability of the supporting system for the rockburst high-risk area are remarkably improved.

The invention provides a tunnel hidden defect simulation detection system, and relates to the technical field of tunnel detection. The method comprises a lining structure, a hidden defect simulation assembly, a radar assembly and a signal processing assembly. The lining structure comprises reinforcing meshes with different mesh sizes and internal defect simulation components; the reinforcing meshes with different mesh sizes are used for simulating the reinforcing meshes under different conditions, and the internal defect simulation component is used for simulating a lining structure under different internal defects; the hidden defect simulation assembly comprises a frame, a hidden defect simulation component and surrounding rock; the radar assembly is used for transmitting and receiving electromagnetic waves in a preset frequency range. The signal processing assembly is used for processing radar echo signals received by the radar, determining radar signal characteristics under the conditions of internal defects of different lining structures and tunnel hidden defects according to the radar echo signals, and constructing a hidden defect simulation detection database. According to the invention, tunnel simulation detection under different working conditions can be realized.

The present application provides a rebar tying robot capable of automatic track switching. The rebar tying robot comprises: a mounting frame; and a walking mechanism, a track switching mechanism, and a tying mechanism arranged on the mounting frame. The walking mechanism is used for driving the robot to move in an X direction. The track switching mechanism comprises a first support assembly, a second support assembly, and a translation assembly. The first support assembly and the second support assembly can be alternately supported on a rebar mesh, and a contact surface of each of the first and second support assemblies with the rebar mesh is planar. The translation assembly is connected to the first support assembly or the second support assembly, and is used for driving the robot to move in a Y direction. The tying mechanism is used for tying rebars. According to the rebar tying robot capable of automatic track switching in an embodiment of the present application, the first support assembly and the second support assembly are alternately supported on the rebar mesh and, in coordination with the translation assembly, drive the robot to move in the Y direction, thereby enabling the robot to automatically switch tracks.

The application discloses a track with adjustable vertical linear rail beam and a construction method thereof. The track comprises two parallel steel beams, and the top of the steel beam is provided with an adjustable low beam. The adjustable low beam is a vertically adjustable beam. The opposite side walls of the adjustable low beam are guide walls, and the guide walls are in contact with guide wheels of a cloud bus rubber-tyred tramcar. The construction method comprises the following steps: processing the steel beam; marking the threaded steel bolt; welding the threaded sleeve; welding the top steel plate and the threaded steel bolt; adjusting the position of the steel beam; welding the steel beam and the threaded steel bolt; hoisting; linear adjustment of the two-way steel mesh construction; installation and reinforcement of the outer side formwork; installation and reinforcement of the inner side formwork; and installation and reinforcement of the inner side formwork. The application can adjust the vertical linear rail beam body, reduces the difficulty of linear rail beam body adjustment before operation, is convenient to construct, has low cost, increases the overall rigidity of the rail beam, and improves the train driving comfort.

The invention belongs to the field of building robot operation, and particularly relates to a vertical steel bar binding robot system and a control method, and the vertical steel bar binding robot system comprises a robot body, and a walking mechanism, a sensing system, a positioning and height adjusting module, a binding execution mechanism and a central control system which are arranged on the robot body; the walking mechanism is installed on the lower portion of the robot body. The positioning and height adjusting module comprises a stirrup positioning mechanism and a vertical height adjusting mechanism; the walking mechanism, the sensing system, the binding executing mechanism and the positioning and height adjusting module are all in communication connection with the central control system. The technical problems that in the prior art, an automatic binding scheme mostly aims at a horizontal reinforcing mesh, and for a vertical reinforcing steel bar binding scene, a systematic solution capable of achieving autonomous movement, precise positioning of transverse reinforcing steel bars and efficient binding of dense nodes is lacked are effectively solved.

The invention relates to the technical field of mining, and discloses a high and large stope barren rock and tailing cemented filling body artificial false bottom and a manufacturing method thereof. The artificial bottom comprises a framework structure, a waste rock layer and a tailing cementing material layer; wherein the skeleton structure comprises an upper-layer reinforcing mesh structure, a lower-layer anchor mesh structure and a steel fiber rope for connecting the upper layer and the lower layer; the skeleton structure is filled with the waste rock layer; gaps between the framework structure and the waste rock layer are filled with the tailing cementing material layer. According to the high and large stope barren rock and tailing cemented filling body artificial false bottom and the manufacturing method thereof, underground barren rock is used as main aggregate, the using amount of a cementing agent is greatly reduced, a reinforcing mesh-barren rock-cementing slurry composite flexible structure has extremely high mechanical performance, the maintenance period is remarkably shortened, the construction efficiency is improved, and the construction cost is reduced. And the construction cost is reduced.

The utility model belongs to the technical field of tunnel engineering construction, and discloses an assembly type corrugated steel plate preliminary bracing structure for a vertical shaft, which comprises an assembly type corrugated steel plate layer and a plurality of anchor rods, the assembly type corrugated steel plate layer is formed by splicing a plurality of corrugated steel plate units, and one end of each anchor rod is fixed on surrounding rock. The other end of the anchor rod is fixedly connected with the corrugated steel plate unit, and a grouting layer is filled between the assembly type corrugated steel plate layer and the surrounding rock, so that the complex links of material field processing, layered concrete spraying and the like are reduced, and the construction process is greatly simplified; in terms of construction pollution, a large amount of dust generated by sprayed concrete is avoided, the construction environment is improved, the corrugated steel plate layer cooperates with the anchor rod, the grouting layer, the reinforcing mesh and the like to form a stable supporting system, the arc-shaped corrugated steel plate body is attached to the surrounding rock, the zinc coating enhances corrosion resistance, and the foam pad improves the durability of the structure. The tunnel supporting target which is efficient, environmentally friendly, economical, stable and reliable is achieved on the whole.

The invention discloses a lightweight concrete fabricated building grouting sleeve and a grout supplementing method, and relates to the technical field of constructions.The lightweight concrete fabricated building grouting sleeve comprises a guide rail, two oppositely-arranged pouring mechanisms are slidably mounted at the upper end of the guide rail, and a bottom pouring plate is jointly arranged at the bottoms of the two pouring mechanisms; and two reinforcing meshes are symmetrically arranged at the upper end of the bottom pouring plate. The interface activity modifier is applied to an old slurry interface before slurry supplementing, deep strengthening of a lightweight concrete grouting sleeve connecting area is achieved, the interface activity modifier is guided in through the lower through pipe and the upper through pipe and evenly sprayed to a glass fiber sleeve and the inner wall of a building sleeve mechanism through the through pipe and the transverse pipe, and the strength of the building sleeve mechanism is improved. It is ensured that the modifier can effectively cover the juncture area of new and old slurry, wetting, permeating and chemical activation are conducted on the hardened cement surface, and the bonding strength of follow-up slurry supplementing materials and an original interface is improved.

The present application belongs to the field of coal mine roadway construction, and particularly relates to a method for self-forming a roadway by top cutting at a negative angle. The method comprises the following steps: drilling a field in front of a working face and close to a right side of a mining roadway; drilling anchor holes and top cutting holes along a strike and staggered construction, and installing grouting anchor cables in the field; cutting the basic roof and the immediate roof at a negative angle through the top cutting holes at the back of the working face, constructing a roadway-side gangue retaining structure, grouting through the grouting anchor cables and anchoring the grouting anchor cables on the roadway-side gangue retaining structure; and monitoring the deformation of the steel mesh at the grouting anchor cable and adjusting through a nut. The present application can ensure that the construction position of the roadway-side gangue retaining structure does not affect the width of the self-supporting roadway and the integrity of the roof by constructing a field of a certain width in advance. The negative angle top cutting holes can cut a section that is deviated to the direction of the goaf, so that the gangue formed by the collapse of the immediate roof moves to the direction of the goaf and does not move to the mining roadway in large quantities, thereby ensuring the safety of the construction in the mining roadway.

This invention provides a foam-filled retaining wall and its construction method, relating to the field of filling technology for goaf areas in underground mines. The foam-filled retaining wall comprises two prefabricated foam layers spaced apart, with a bridging structure between the two layers. A reinforcing mesh is installed on the bridging structure, and concrete and polyurethane foam are poured between the two prefabricated foam layers as filler. Based on the technical solution of this invention, the foam-filled retaining wall can improve its strength and water filtration performance, increase its construction efficiency, reduce its construction cost, and enhance its construction safety.

The invention discloses a downward drift U-shaped frame type filling mining method suitable for a medium-thickness ore body, the ore body is divided into stopes along the trend, a preparation mining project comprises a slope ramp and a horizontal layered transverse drift roadway, and the preparation mining slope ramp is arranged in footwall surrounding rock in a turn-back manner. The stope is stoped and filled layer by layer from top to bottom, a middle-footwall-hanging wall type stoping sequence is adopted in the layer, the middle part access is stoped and filled firstly, then the footwall boundary access is stoped, and finally the hanging wall boundary access is stoped; and then reinforcing meshes are integrally laid on the hanging wall boundary access road, the footwall boundary access road and a horizontal layered transverse drift roadway bottom plate in the layered vein, false bottoms are poured and are filled with roof contact, the integrated U-shaped frame type artificial false bottoms are formed, and the directions of U-shaped openings of the integrated U-shaped frame type artificial false bottoms of the upper layer and the lower layer which are adjacent to each other are opposite. And a mutually supported stable structure is formed. The method has the advantages of safe operation, large stope production capacity, high efficiency, low cost and the like.

The invention discloses a method and a system for reconstructing a cavity shielded by a shallow reinforcing mesh. The method comprises the following steps: constructing a layered medium scene containing the shallow reinforcing mesh and the cavity; acquiring image data information with different shielding states and preprocessing the image data information to construct a reconstruction data set; constructing a reconstruction initial model of the cavity shielded by the shallow reinforcing mesh, and training to obtain a reconstruction model of the cavity shielded by the shallow reinforcing mesh; and adopting the obtained reconstruction model of the cavity shielded by the shallow reinforcing mesh to reconstruct the actual cavity shielded by the shallow reinforcing mesh. According to the method, multiple types of training data are acquired through a constructed layered medium scene containing a shallow reinforcing mesh and a cavity, and a reconstruction model of the cavity shielded by the shallow reinforcing mesh, which comprises a U-shaped network, a Sobel operator, an attention mechanism, a residual structure, an average mechanism and a jump connection scheme, is trained; therefore, the reconstruction of the cavity under the shielding of the shallow reinforcing mesh can be realized, the reliability is higher, the accuracy is better, and the reconstruction efficiency is higher.

The invention relates to the field of welding devices, in particular to a reinforcing mesh welding mechanism for concrete cable trench cover plate machining. The whole device is supported through a bottom plate at the bottom, a supporting frame used for containing a reinforcing mesh is arranged on the bottom plate, an electric resistance welding device used for conducting row welding on the reinforcing mesh is arranged on the bottom plate, and a traction device used for pulling the reinforcing mesh to move is arranged on the bottom plate. The reinforcing mesh is composed of a plurality of transverse reinforcing steel bars and longitudinal reinforcing steel bars alternately located above and below the transverse reinforcing steel bars, an upper discharging mechanism for placing the longitudinal reinforcing steel bars on the transverse reinforcing steel bars is arranged on the bottom plate, and a lower discharging mechanism for abutting the longitudinal reinforcing steel bars against the transverse reinforcing steel bars from the lower portion is arranged on the bottom plate. An upper welding electrode and a lower welding electrode on the electric resistance welding device can both ascend and descend in the vertical direction, and the moving distances of the upper welding electrode and the lower welding electrode before welding are different according to different positions of longitudinal steel bars. By welding the longitudinal reinforcing steel bars which are alternately arranged up and down, the reinforcing mesh can well adapt to bidirectional force, and the overall strength of the reinforcing mesh is improved.

The utility model discloses an assembly type foundation connecting structure for an outdoor pipeline, relates to the technical field of assembly type foundation connecting structures, and provides the following scheme that the assembly type foundation connecting structure comprises a foundation cushion layer. According to the assembly type foundation connecting structure for the outdoor pipeline, in the using process, four sets of embedded bolts are installed in the prefabricated foundation bearing platform in advance and correspond to preformed holes formed in the side edges of the lower embedded steel plate at the top, and before a prefabricated rectangular column is hoisted, leveling nuts are installed at the tops of the embedded bolts; the height of the leveling nuts is kept consistent through a level gauge, the installation precision is ensured, installation deflection of the prefabricated rectangular column is avoided, the embedded bolts can be welded to a foundation platform reinforcing mesh, the influence of the concrete pouring and prefabricating process on bolt positioning can be effectively prevented, the connecting part of the prefabricated part is installed in a bolt leveling mode, and the installation efficiency is improved. Therefore, the elevation of the molding surface of the column top can be adjusted, and the quality defect caused by poor control of the casting elevation precision of the cushion layer is effectively avoided.

The invention discloses reinforcing mesh welding equipment and method based on PLC control, and relates to the technical field of reinforcing mesh welding. A plurality of sets of welding heads are installed at the bottom of a welding control base, a first steel bar positioning assembly and a second steel bar positioning assembly are arranged in a cross shape, a plurality of first steel bar positioning points are arranged on the first steel bar positioning assembly, and first steel bars are borne and positioned through the first steel bar positioning points; the second steel bar positioning points are higher than the first steel bar positioning points, and the second steel bars are perpendicularly attached to the tops of the first steel bars to form a plurality of welding points. After welding is completed, the PLC control system controls the horizontal conveying screw rod to rotate by a certain number of turns again, so that the whole reinforcing mesh advances by a fixed distance, the next row of welding points are aligned with each group of welding heads, and the PLC control system repeats the same instruction after welding is completed again, so that automatic welding operation of the reinforcing mesh can be realized.

The invention belongs to the technical field of T-shaped beam top plate reinforcement cage forming, and discloses a T-shaped beam top plate reinforcement cage welding device which comprises a rack, a long rib positioning mechanism, a stepping mechanism, a mesh moving mechanism and a welding mechanism. The supporting part is used for supporting all the full-length ribs; the stepping mechanism is movably arranged on the rack in the second direction, and the stepping mechanism can clamp the full-length rib supported by the supporting part to move in the second direction; the mesh moving mechanism is movably arranged on the rack in the second direction, and the mesh moving mechanism is used for moving the single reinforcing mesh located on the full-length ribs; the welding mechanism is arranged on the rack and used for welding the full-length ribs and the single reinforcing mesh moved in place by the mesh moving mechanism. The T-shaped beam top plate reinforcement cage can be automatically formed, and the production efficiency of the T-shaped beam top plate reinforcement cage is improved.

The invention provides a reinforcing steel bar positioning and stabilizing frame for reinforced concrete pouring, and relates to the technical field of building components, the reinforcing steel bar positioning and stabilizing frame comprises a stabilizing assembly, the stabilizing assembly is composed of a supporting rod and a positioning mechanism, and the stabilizing assembly can be constructed along with the binding procedure of a reinforcing steel bar mesh, so that the reinforcing steel bar mesh does not need to be specially supported and elevated subsequently; the operation process is simplified, the construction efficiency is greatly improved, meanwhile, reinforcement meshes at the deep positions in the formwork of the shear wall and other components can be heightened and supported, the quality defects of reinforcement exposure, insufficient thickness of a protection layer and the like after pouring are avoided, and the problem that in existing reinforced concrete construction, the construction cost is low is solved. The arrangement of cushion blocks or supporting frames usually lags behind the procedures of steel bar binding and formwork erecting and cannot be completed along with synchronous binding of steel bars, so that the cushion blocks are difficult to go deep into the inner sides of formworks of shear walls and other components to accurately block up the steel bars, and the problems that the steel bars are exposed and the thickness of a protective layer is insufficient after the parts are poured are easily caused.

Devices and apparatuses are provided for improved sensor implementation. An example sensor device includes a housing defining a top portion, a bottom portion opposite the top portion, and an interior therebetween. The interior of the housing supports various sensor circuitry. The sensor device further includes an anti-rotation element attached to the housing, such as to and end of the top portion of the housing. The anti-rotation element is configured to prevent rotation of the housing relative to a support structure, such as a rebar mesh when the sensing device is embedded in a cementitious mixture.

The utility model discloses an environment-friendly autoclaved aerated building block, relates to the technical field of building blocks, and solves the problems that a wall built by adopting the autoclaved aerated building blocks is common in heat preservation effect and indoor heat loss in winter is fast. The environment-friendly autoclaved aerated building block comprises a building block body, a containing groove is formed in the building block body, and a reinforcing mesh is fixedly connected to the inner bottom wall of the containing groove; a reinforcing mesh is arranged in the building block body, a containing groove is formed in the building block body, the position, above the reinforcing mesh, in the containing groove is filled with a polyurethane heat preservation core block, a covering groove is formed in the position, at the top of the containing groove, of the building block body, a high-strength stainless steel plate is fixedly embedded in the covering groove, grooves are formed in the periphery of the high-strength stainless steel plate, and clamping pieces are arranged in the grooves. Through the arrangement of the polyurethane heat preservation core block, the heat preservation and heat insulation performance of the building block body can be improved, so that the heat preservation effect of a wall body piled by the building block body can be improved, the loss of indoor heat in winter is reduced, and the energy-saving and environment-friendly effects are improved.

The invention belongs to the field of building components, and particularly relates to a prefabricated lattice wall. According to the technical scheme, the structure is formed by splicing a plurality of aerated concrete reinforced plates, a plurality of transverse penetrating type circular-section grouting holes are formed in the aerated concrete reinforced plates, transverse penetrating type semicircular-section grouting holes are formed in the short edges of the aerated concrete reinforced plates, and vertical penetrating type semicircular-section grouting holes are formed in the long edges of the aerated concrete reinforced plates; the two vertical penetrating type semicircular section grouting holes in the splicing position of every two adjacent aerated concrete reinforced plates are spliced to form a vertical circular section grouting hole, and criss-cross hollow grids are formed. Transverse steel bars and vertical steel bars are respectively inserted into the hollow grids to form a criss-cross steel bar net, grouting materials are poured into the hollow grids, and the steel bar net and the grouting materials form a lattice-shaped connecting structure together. According to the prefabricated lattice type wall body, the heat preservation performance, the shock resistance and the construction precision of the wall body can be effectively improved.

The invention particularly relates to an automatic reinforcement mesh laying robot for soil hole reinforcement, which comprises arc-shaped reinforcing steel bars, a vehicle body, a D-shaped lifting frame fixedly mounted on the upper side of the vehicle body and a D-shaped conveying frame plate movably hinged to the upper side of the vehicle body, and the D-shaped conveying frame plate is provided with a placement through groove for arranging and placing the multiple arc-shaped reinforcing steel bars. When the D-shaped conveying frame plate is switched to be in the horizontal state, the arc-shaped steel bars can be rapidly loaded in parallel through a placement through groove, and when the D-shaped conveying frame plate is switched to be in the vertical state, the parallel arc-shaped steel bars can be rapidly pushed out and fed into the upper circumferential face of the D-shaped lifting frame in cooperation with a buffering pushing assembly; the front sides of the arc-shaped steel bars correspond to the side magnetic stirring pieces of the telescopic stirring assembly, the arc-shaped steel bars can be stably and magnetically attracted through the magnetic stirring pieces to avoid sliding, the arc-shaped steel bars can be evenly dispersed under the action of the connecting rope, and efficient and automatic laying is achieved.

The application provides a large-space variable house type steel structure residence and a design method thereof, and relates to the technical field of steel structure residence design, and specifically comprises mutually connected column bodies and floors, the column body is sequentially provided with a concrete core, a rectangular steel pipe column and a first reinforced concrete cladding layer from inside to outside; the first reinforced concrete cladding layer comprises a steel mesh layer; the floor is sequentially provided with a top reinforced concrete layer, a middle layer and a bottom reinforced concrete layer from top to bottom; the middle layer is uniformly provided with a combined rib beam, a hollow square box and a floor rib beam; the combined rib beam is used for connecting the floor and the column body; a plurality of floor rib beams are vertically arranged to form a grid structure; the grid structure is symmetrically arranged on both sides of the combined rib beam; and the hollow square box is arranged in a grid hole of the grid structure. The scheme can provide a large-space beamless and columnless space, improve the use area in the suite, and be suitable for the dynamic change requirement of a family structure.

The invention relates to the technical field of constructional engineering, in particular to a multi-layer prefabricated reinforcing mesh stacking and binding device and a using method thereof.The multi-layer prefabricated reinforcing mesh stacking and binding device comprises channel steel binding platforms used for binding reinforcing meshes, and the multiple channel steel binding platforms are sequentially stacked from bottom to top; the channel steel binding platform comprises two pieces of symmetrically-arranged channel steel, a plurality of positioning clamping grooves are symmetrically formed in the opposite sides of the two pieces of channel steel, and the multiple positioning clamping grooves are evenly formed in the length direction of the channel steel. The reinforcing mesh comprises a plurality of transverse reinforcing steel bars and a plurality of longitudinal reinforcing steel bars, the transverse reinforcing steel bars are in lap joint with the corresponding positioning clamping grooves in the channel steel binding platform, and the longitudinal reinforcing steel bars are in lap joint with the upper portions of the transverse reinforcing steel bars at equal intervals. According to the stacking and binding device for the layer prefabricated reinforcing meshes, site resources can be saved, and the binding quality of the reinforcing meshes can be guaranteed.

The application provides a closed wall safety molding trolley and a building method thereof, which comprises a self-walking chassis, a protective observation barrier is arranged at the upper end of the self-walking chassis, a hydraulic rotary table is arranged on the front end surface of the self-walking chassis, a gripping operation arm is installed on the upper end surface of the hydraulic rotary table, a welding operation arm is installed on the front section surface of the gripping operation arm, anchor rods are distributed on the inner wall surface of a roadway around the gripping operation arm during operation, fixed support columns are arranged on the surface of the anchor rods, steel mesh sheets are arranged on one side surface of the fixed support columns, and a plurality of cloth meshes are arranged on one side surface of the steel mesh sheets, so as to solve the safety accidents in the process of building the closed wall in the mine stope (goaf), and improve the building efficiency of the closed wall.

The invention discloses a soft soil area newly-built box culvert short-distance crossing operation subway line construction method which comprises the steps that positioning paying-off and blocking are conducted in a construction area, and before a foundation pit is excavated, ballasting bags with the specific stacking weight and height are arranged in the center of a corresponding subway tunnel rail according to the linear meter; holes are formed in the uplift pile positioning positions on the two sides of the subway tunnel, a first section of pile casing is hoisted and pressed downwards till the first section of pile casing sinks, the perpendicularity is adjusted, a rotary drilling machine takes soil to enable the pile casing to sink, all sections of pile casings are sequentially inserted into the designated burial depth, a reinforcement cage is put down to pour concrete, the pile casings are pulled out after the strength reaches the standard, and a cushion layer is made; the uplift pile end reinforcing steel bars on the same side are connected through reinforcing steel bar nets to form an uplift beam net, box culvert bottom plate reinforcing steel bars are bound, and an uplift pile, uplift beam and box culvert bottom plate integrated structure is formed through formwork erecting and pouring. According to the technical scheme, disturbance of construction to the subway tunnel can be reduced, and operation safety is guaranteed.