42results about How to "Simple construction operation" patented technology

The invention discloses a fully-recycled prestressed square pile and latticed column combined stand column pile construction method, and belongs to the technical field of green foundation pit supporting. According to the construction method of the fully-recycled prestressed square pile and latticed column combined stand column pile, the prestressed square pile serves as the lower section of the stand column pile and is organically combined with the latticed column, the stand column pile can be pressed into the designed elevation through static pressure equipment, and the construction method has the advantages of being low in construction cost, high in construction efficiency, free of pollution and the like; the stand column piles are integrally pressed into a soil body, the foundation pit soil body is excavated layer by layer, concrete supports and surrounding purlins on the periphery of a foundation pit are supported layer by layer through self-servo hydraulic converters and supporting cross beams, foundation pit construction operation is easy and efficient, and construction is safer and more stable; moreover, after a bottom plate and structural floor slabs of all layers are built, the stand column piles can be recycled by 100%, zero emission is truly achieved, the low-carbon, environment-friendly and green construction effects are achieved, in addition, sensors can be arranged in the pile sections of the prestressed square piles, and foundation pit full-section monitoring and deformation control are achieved.

The present invention discloses a method for solidifying dredged sludge by using biological carbonization activated magnesium oxide technology, and belongs to the technical field of soil solidification. In the present invention, urease-producing bacteria are first used to prepare a pre-hydrolyzed urea solution, and then the pre-hydrolyzed urea solution and an activated magnesium oxide solidifying agent are separately and evenly mixed into dredged sludge with a certain water content according to a certain dosage, stirred to form a slurry, and the slurry is filled in a designated site or model and fully maintained. The present invention greatly reduces the construction cost and improves the feasibility and efficiency of solidification treatment of dredged sludge with high water content by introducing the technology of carbonization of urea solution pre-hydrolyzed by urease-producing microorganisms and activated magnesium oxide solidifying agent.

The invention discloses a bridge section steel expansion joint maintenance construction method based on a novel formwork system, and particularly relates to the technical field of bridge section steel expansion joint maintenance construction, and the method comprises the following steps: S1, preparation before construction, S2, on-site construction, and S3, construction summarization. When a traditional profile steel expansion joint is maintained and constructed, (1) flexible materials such as foam plates and cloth which are low in strength and not easy to fix are adopted to fill the joint and support concrete, the concrete in the expansion joint is easy to expand, leak slurry, block and pollute a lower bridge structure, and the working performance of free expansion of the structure is influenced; and (2) the gaps and the retaining concrete are filled with battens or square timbers, so that the installation difficulty is high, the formwork is easy to deviate, and the difficulty of taking out the gap filling material in the later period is high. According to the method, the maintenance construction method that a traditional joint filling material is replaced with the rail inner supporting type aluminum formwork system is adopted, operation is easy, the construction speed is high, precision is high, the side face structure size of the post-cast strip joint can be accurately controlled, and the phenomena of concrete formwork expansion and slurry leakage are eliminated; by changing the specifications of the self-sealing turn buckles, the formwork system can be suitable for construction of various types of profile steel expansion joint structures; meanwhile, in the construction process, through combination of the formwork and the horizontal laser instrument, a traditional rough construction method for controlling the profile steel and concrete surface elevation and flatness is changed, and the overall maintenance construction quality of the profile steel expansion joint structure is improved.

The utility model relates to the technical field of constructional engineering, in particular to a conveniently detachable preformed hole formwork square pile shaping device which comprises a bottom plate, a first-stage locking positioning plate and a shaping frame, a base plate is arranged at the top of the bottom plate, and clamping holes are formed in the bottom plate and the base plate in a penetrating mode. A first-stage locking positioning plate is arranged on one side of the outer wall of the bottom plate, a second-stage locking positioning plate is arranged on the other side of the outer wall of the bottom plate, a first-stage locking lifting rod is arranged at the bottom of the interior of the first-stage locking positioning plate, and a shaping frame is installed at the bottom of the first-stage locking lifting rod. A second-stage locking lifting rod is mounted at the middle end of the interior of the second-stage locking positioning plate, a mold closing plate is mounted at the bottom of the second-stage locking lifting rod, and a feeding groove is formed in the top of the shaping frame. The problems that in the prior art, an existing preformed hole formwork dismounting device is complex in operation, low in efficiency, prone to damage a formwork and the like, and construction efficiency and quality are affected are solved.

The utility model discloses a pitched roof concrete vibrating and smoothing device, which belongs to the technical field of building construction appliances and comprises a mounting frame, two face smoothing wheels are arranged below the mounting frame and are arranged in parallel front and back, and a vibrating plate is arranged between the two face smoothing wheels. A lifting mechanism used for driving the vibrating plate to work is arranged above the vibrating plate, a driving mechanism used for driving the noodle collecting wheel to rotate and the lifting mechanism to work is further arranged on the mounting frame, a telescopic rod is arranged on the mounting frame through a connecting frame, and an operating handle is arranged at the top end of the telescopic rod. According to the concrete surface finishing machine, the motor is used for driving the two surface finishing wheels to roll on the concrete surface to carry out concrete surface finishing operation; and meanwhile, the vibrating plate is driven to perform surface vibrating operation on the cement surface, so that the concrete surface is vibrated and polished, the construction operation is simple, the progress of vibrating and surface finishing of workers is greatly improved, the construction period is guaranteed, the labor cost is saved, the concrete appearance quality is improved, and very high practicability is achieved.

The utility model discloses a steel structure net rack rod piece reinforcing device which comprises reinforcing structures, and at least three reinforcing structures arranged in the axial direction of a net rack rod piece are evenly fixed in the circumferential direction of the net rack rod piece. The reinforcing structure comprises a rod body connecting plate, a conical head connecting plate and a reinforcing piece. The reinforcing device has the advantages that the reinforcing device can directly reinforce a net rack rod piece which does not meet the requirement for bearing capacity, rod piece replacement or overall net rack replacement is not needed, the cost is low, the period needed for rod piece reinforcement is short, construction operation is simple, and the overhaul efficiency can be effectively improved; the rod body connecting plates and the conical head connecting plates are arranged outside the net rack rod piece at intervals, welding operation with the original net rack rod piece belongs to interval welding, welding damage to the original net rack rod piece is not prone to being caused, and meanwhile welding stress concentration can be avoided.

The utility model relates to the technical field of bridge construction, in particular to a double-limb thin-wall pier No.0 block bracket embedded part and a bracket, which comprise bracket embedded parts, at least two groups of bracket embedded parts are arranged along the vertical direction of a pier body and are respectively positioned at the upper end and the lower end of the pier body; comprising a bracket cross rod and a bracket inclined rod, one end of the bracket cross rod is fixedly connected with an upper end bracket embedded part, one end of the bracket inclined rod is fixedly connected with a lower end bracket embedded part, and the other end of the bracket inclined rod is fixedly connected with the other end, away from the upper end bracket embedded part, of the bracket cross rod. The embedded boxes and the shear parts on the two sides of the pier body can be fixedly connected through the shear part pull rods, and when the bracket embedded part is stressed, force can be transmitted to the embedded boxes and the shear parts on the two sides through the pull rods, so that the bracket embedded part can bear large bending shear stress.

The construction guardrail comprises a first supporting assembly and a second supporting assembly which are oppositely arranged, storage frames located on the first supporting assembly and the second supporting assembly are connected through a telescopic net, and the storage frames can be rotationally installed on the first supporting assembly or the second supporting assembly in the horizontal direction. The first supporting assembly and the second supporting assembly are each provided with a plurality of height adjusting assemblies capable of adjusting the distance between the lower end face of the first supporting assembly and the ground, and when the two construction guardrails are in butt joint, a connecting assembly used for detachably connecting the first supporting assembly and the second supporting assembly together is arranged between the first supporting assembly and the second supporting assembly which are in butt joint. The length of the construction guardrail and the position angles among the first supporting assembly, the telescopic net and the second supporting assembly can be flexibly adjusted, the distance between the lower end face of each supporting assembly and the ground can be flexibly adjusted according to the concave-convex condition of the ground, and therefore the stability of the supporting assemblies during placement is guaranteed. When two construction guardrails are connected in a butt joint mode, construction operation is simple, and convenience and high efficiency of guardrail construction or disassembly are guaranteed.

The utility model belongs to the field of municipal engineering, and particularly relates to a step installation marking positioning device which comprises a grab rail, a lower spring telescopic rod is fixed to one side of the bottom end of the grab rail, and a supporting horizontal rod is fixed to the other side of the bottom end of the grab rail. An arc-shaped rod A is fixed between the two middle lower spring telescopic rods; a hoop is fixed to the lower portion of the grab rail, four upper spring telescopic rods are hinged to one side of the hoop, the other side of the hoop is connected with a supporting inclined rod, and the supporting inclined rod and a supporting horizontal rod are fixed together. An arc-shaped rod B is fixedly connected between the outer ends of the supporting horizontal rods, and rollers are outwards arranged at the two ends of the arc-shaped rod B; the upper spring telescopic rod and the two protective covers are fixed together, the protective covers cover the roller, hollowed-out holes are formed in the periphery of the surface of the roller, the surface of the roller is coated with a coating layer, and the lower spring telescopic rod and the roller are rotationally connected together. According to the device, one-time positioning and paying-off can be conducted on the installation position of the step outside the well chamber, the working efficiency of measurement and paying-off before the step is installed is improved, and the problem that measurement and positioning paying-off of the step in the well chamber are difficult is solved.

The invention provides a steel pipe column ring beam steel bar construction method, which comprises the following steps of: hoisting ring beam steel bars under the working condition of hoisting construction from top to bottom, pre-placing prefabricated ring beam steel bars at the top of a constructed steel pipe column under the working condition of not meeting the hoisting construction from top to bottom, and then, after a new steel pipe column is mounted, pre-placing the prefabricated ring beam steel bars at the top of the constructed steel pipe column. And the preset ring beam reinforcing steel bar is lifted to the mounting position, the problem that the prefabricated ring beam reinforcing steel bar cannot be hoisted from top to bottom is solved, meanwhile, field binding is not needed, and the problem that the construction period is greatly prolonged is avoided. According to the construction method, the construction convenience and the construction efficiency are remarkably improved, the requirement for the working face is lowered, the construction problem of the ring beam steel bars at the special structure is solved under the condition that construction facilities are not increased, all the ring beam steel bars are integrally installed under the special working condition, the construction operation is simplified, and the construction cost is reduced. And the mounting efficiency and the construction quality are improved.

The utility model provides a structural wall tie bar positioning device which comprises a vertical component, a plurality of horizontal components and a plurality of positioning components, at least one side of each horizontal component is connected with the positioning component in a sliding mode so as to position rubbing, and the horizontal components are connected with the vertical component in a sliding mode so as to adjust rubbing intervals in a sliding mode. At least one moving groove is formed in at least one side of the horizontal component, at least one sliding groove is formed in the vertical rod, scales are arranged on at least one side of the surface of each moving groove and at least one side of the surface of each sliding groove in the length direction, and adjustable rapid positioning of different tie bar intervals is achieved through the design of the moving grooves and the sliding grooves. The vertical component can be folded for storage; the positioning component is provided with buttons to control rubbing. The positioning device has the advantages that positioning can be completed by one constructor, high-position positioning can be performed without climbing, the positioning device is simple in structure, convenient to operate, high in construction efficiency and accurate in positioning, construction safety is guaranteed, construction cost is reduced, and the positioning device is convenient to detach and store and can be repeatedly used.

The invention provides a formwork quick connector and a using method, and belongs to the technical field of building construction, the connector comprises a screw rod arranged between two formworks in a penetrating mode, one end of the screw rod is provided with a quick locker, and the other end of the screw rod is provided with a connecting part; the connecting part comprises a second connecting column, the second connecting column is connected with the screw rod, the second connecting column is connected with a third connecting column, the third connecting column is connected with an embedding head, and the second connecting column is connected with a rubber sliding head; a fixing part is connected between the embedding head and the rubber sliding head on the third connecting column; the fixing part comprises a first connecting seat and a second connecting seat, a clamping piece is arranged on the second connecting seat, one end of the clamping piece is located between the embedding head and the rubber sliding head, a rotating sleeve is arranged between the first connecting seat and the second connecting seat, and a positioner is arranged on the first connecting seat. According to the connector, the working efficiency is improved, the construction period is shortened, and the construction cost is reduced.

The invention discloses a construction method for local replacement of a shield forming tunnel invasion and limit duct piece. The invasion and limit duct piece is replaced in a shield tunnel through replacement equipment. The replacement equipment comprises a sealing structure, a circulation structure, a supporting structure, a duct piece breaking structure, a duct piece replacement structure and a man gate. The sealing structure is used for forming a closed space in the tunnel structure, the tunnel inner support is formed through grouting, the tunnel structure is supported through slurry balance, the stratum can be stabilized without arranging an external support, and the problems existing in existing stratum reinforcement are solved; and the new duct piece is installed through the duct piece replacement structure, so that the replacement operation of the invasion limit duct piece is effectively simplified, the construction period is greatly shortened, and meanwhile, the construction cost is also effectively reduced.

The utility model provides a lamp pole with base shield, including pole body and reinforcing base, still include base shield, base shield is respectively with pole body and reinforcing base matching hoop sleeve setting, and completes the sealing waterproof of base shield to pole body and reinforcing base two position, base shield includes first outer cover and second outer cover of split type buckling splicing through buckling structure. The utility model provides lamp pole convenient to dismount, has solved the technical problem of the phenomenon such as rust, cracking of the buckling structure in the prior art exposed to the outside and further influence the protection function of the shield, and realizes the multistage sealing waterproof of lamp pole, improves the use safety of lamp pole, prolongs its life.

The utility model relates to a recyclable assembly type retaining wall. A conventional retaining wall above a top beam causes great trouble to foundation pit construction due to complex construction procedures, high manufacturing cost and long construction period. The retaining wall structure comprises a plurality of connecting pieces and a plurality of retaining wall assemblies, the connecting pieces are arranged above a top beam at intervals, and the retaining wall assemblies are arranged above the top beam and connected between the adjacent connecting pieces respectively. The connecting piece comprises a U-shaped steel plate and profile steel, the profile steel is vertically arranged above the U-shaped steel plate, and the U-shaped steel plate is arranged on the top beam in a sleeving mode. The construction operation is simple, the manufacturing cost is low, and the construction period is short.

The invention discloses a building wall surface construction method, and relates to the technical field of building construction.The method comprises the steps that preparation work is conducted, specifically, a building wall surface is cleaned; the heat preservation device is installed on the building wall face through a fixing device till the whole building wall face completely covers the heat preservation device, the heat preservation device comprises a first heat preservation plate and a second heat preservation plate, and the first heat preservation plate is provided with a first sliding part, a first oblique installation hole and a first oblique installation part; a second sliding mounting part, a second inclined mounting hole and a second inclined mounting part are arranged on the second insulation board; and wall surface construction is completed, and verification is carried out. According to the structure of the heat preservation device, sealing connection is achieved through the fixing structures which are in cross butt joint, the situation that the heat preservation effect is affected due to untight connection between different heat preservation plates is avoided, and the construction efficiency is further improved.

The utility model discloses a three-way temporary restraining device for a tower beam of an I-shaped steel concrete superposed beam cable-stayed bridge, which comprises a vertical temporary restraining part, a longitudinal temporary restraining part and a transverse temporary restraining part, the vertical temporary restraint comprises a plurality of anchoring cushion stones arranged on a lower cross beam of the cable bent tower, vertical lifting cushions supported between the anchoring cushion stones and the steel beams and prestressed steel beams for anchoring the lower cross beam and the steel beams into a whole, and the prestressed steel beams penetrate through the anchoring cushion stones; the longitudinal temporary restraint comprises a seamless steel pipe for connecting the bottom of the steel beam and the lower cross beam into a whole in the longitudinal direction, and the transverse temporary restraint comprises limiting profile steel which is fixedly connected with an embedded part on a bridge deck on the top of the steel beam and an embedded part at the tower column. The utility model has the characteristics of simple on-site construction operation, high construction efficiency, low safety risk and high economic benefit.

The utility model provides a through-wall pipeline plugging device which comprises a functional cover arranged at the tail end of a working pipe, an operation opening is formed in the lower portion of the functional cover, a control valve is installed at the operation opening, a liquid storage cavity is formed between the functional cover and an inner sleeve, and the liquid storage cavity communicates with the operation opening. The functional cover comprises an arc-shaped plugging plate, a top plate is arranged between each end of the upper portion of the plugging plate and the inner sleeve, an end plate is arranged at the end, away from the working pipe, of the plugging plate, and the gap between the plugging plate and the inner sleeve is gradually increased from the side close to the working pipe to the side away from the working pipe. The through-wall pipeline plugging device is simple in structure and reasonable in design, the functional cover is welded to the tail end of the working pipe, so that a closed space is formed in the functional cover, when the through-wall pipeline plugging device is welded, leaked water flow is allowed to be discharged through the operation opening, and after the plugging device is welded, the operation opening is closed through the control valve, so that the sealing effect is achieved. And the construction operation is simple, and time and labor are saved.

The invention relates to the technical field of electrical lighting of buildings, in particular to a construction method of a high and large space steel cable trunking fluorescent lamp band, which is simple in construction, effectively reduces construction cost and construction period, ensures construction safety through low-altitude operation, greatly improves construction efficiency, and effectively saves investment of manpower and material resources. According to the construction method of the high and large space steel cable trunking fluorescent lamp strip, when a steel cable is assembled, one end of the steel cable which is stretched in advance penetrates into a lug ring, is folded back and penetrates into a heart-shaped ring, and then is fixed twice through two steel cable clamps; screw rods at the two ends of the turn buckle are screwed into the nut, and the maximum distance is kept; the iron wire bound at the tail end of the steel cable is removed, the steel cable penetrates through the turn buckle and the lug ring, is folded back and then is embedded into the heart-shaped ring, and then the two steel cable clamps are used for fixing the two steel cable clamps; the steel rope and the turn buckle are pulled up simultaneously, the lug ring at the other end is hooked, then the steel rope is tightened through a large rope, the steel rope is fixed to the lifting hook from the middle, and the tightness of the steel rope is adjusted by adjusting a screw of the turn buckle.

This invention relates to the field of coal seam permeability enhancement technology, and discloses a method and apparatus for multiple fracturing of low-permeability coal seams using a combination of electrical pulses and supersaturated ammonium carbonate solution. The method includes: Step 1, drilling a single-hole long borehole in the coal seam, and then arranging an integrated discharge device within the borehole; Step 2, injecting a high-pressure supersaturated ammonium carbonate ion solution into the borehole, using a data monitoring and control center system to monitor the data within the borehole and control the integrated discharge device to release electrical pulses into the high-temperature, high-pressure conductive medium filling the borehole, thereby fracturing the coal seam and releasing gas; Step 3, after the electrical pulses are repeated 6-8 times, the discharge is stopped, the electrolyte solution is drained, and the integrated discharge device is removed. The single-hole long borehole is then connected to a gas extraction pipeline for gas extraction. This invention is safe, highly efficient, and has wider applicability, possessing urgent practical significance and important technical value.

The present invention discloses a shuttle grille and an installation method thereof, wherein the shuttle grille comprises a T-shaped base and a shuttle-shaped decorative strip body, the shuttle-shaped decorative strip body comprises a semi-shuttle-shaped shell, a connector and two arc-shaped gussets, two symmetrically distributed through grooves with side openings are arranged at the rear of the connector, the extended end of the T-shaped base is placed between the two through grooves, the T-shaped base and the connector are connected as a whole by a bolt assembly, the semi-shuttle-shaped shell is detachably connected to the front end of the connector by a buckle and connected as a whole by screws, the arc-shaped gusset is detachably connected to the notch of the through groove by a buckle, and the front end surfaces of the two arc-shaped gussets are connected to the rear end surface of the semi-shuttle-shaped shell to form a full shuttle shape. The present invention splits the existing integral full-shuttle-shaped profile into four parts, and uses the mechanical connection of the buckle and the invisible bolt assembly at the rear end to complete the effective connection between the parts, so that the mold opening is easier, the construction is more convenient, and the deformation of the structural error is more adaptable without affecting the appearance effect.

The present invention relates to the technical field of engineering jacking construction and building displacement, and in particular to a ram device capable of automatically adjusting height and tilt angle and an application method thereof, characterized in that it comprises a ram, a sliding friction reducing device, a vertical spring, a limiting device and a protective steel pad, wherein the sliding friction reducing device is arranged above the ram, the vertical spring is arranged at the bottom of the ram, the protective steel pad is arranged at the bottom of the vertical spring, and the limiting device is arranged at the periphery of the ram for limiting the vertical and longitudinal directions of the ram. The advantages of the present invention are that it can realize automatic adjustment of height and tilt angle in dragging construction; it does not need to be processed and manufactured separately, and can adopt standard ram spring components, which are light in weight, large in deformation, convenient in installation, and can be repeatedly disassembled and assembled.

The invention discloses a support-free construction method for a large-span steel structure, which belongs to the technical field of building construction, and comprises the following steps: S1, determining the position and reference point of a steel structure upright post, and performing accurate measurement by using a measuring tool; s2, foundation construction is conducted according to the engineering design drawing; s3, steel structure cross beams and connecting pieces prefabricated in a factory are transported to a construction site, and stand columns are installed through hoisting equipment; s4, the cross beam is installed in a segmented mode according to the span, and pulling force is provided through a traction mechanism after each segment is installed; and S5, the steel structure cross beams and the connecting pieces are welded and connected, and the stability and firmness of the structure are ensured. According to the method, the cross beams are installed in a segmented splicing mode, the ends of the cross beams are dragged through the steel wire ropes when each section is installed, a supporting frame does not need to be erected, the occupied space is small, meanwhile, economical efficiency is good, construction operation is easy, efficiency is high, operation steps of workers are simplified, and meanwhile manpower and material resources are saved.

The utility model relates to the technical field of waterproof base plates for toilets, and discloses a spliced waterproof base plate for an assembled toilet, a plurality of universal supports are mounted at the bottom of a toilet body, a fiber cement board is mounted at the tops of the universal supports, a PP (polypropylene) waterproof base plate body is arranged above the fiber cement board, and the PP waterproof base plate body is arranged above the fiber cement board. A mounting groove is formed in the edge side of the top of the PP waterproof chassis body, and a plurality of assembled water retaining strips are mounted in the mounting groove; the PP waterproof base plate body comprises the first plate body unit, the second plate body unit and the third plate body unit, the PP waterproof base plate body is integrally flat and orderly, rapid construction of a decorative surface layer and reserving of a water pouring angle are facilitated, the base layer laid on the PP waterproof base plate body is provided with the universal supporting device and the fiber cement plate as a supporting structure, and the waterproof effect is good. The collapse or cracking phenomenon caused by the fact that the integrated waterproof base plate needs to bear the weight of the whole toilet due to the influence of gravity is avoided, and no empty sound is generated when a user walks on the integrated waterproof base plate.

The invention discloses a reinforced concrete column anchoring structure, and based on the structure, provides a reinforced concrete column anchoring construction method, which, when pouring a floor slab, reserves a pouring hole on the floor slab, and anchors the two ends of the outwardly expanded steel bars into the floor slab around the pouring hole; the column steel bar cage or the prefabricated column is hooked and / or welded to the floor slab steel bars; formwork support is performed on the periphery of the column steel bar cage to form a column pouring cavity; or, formwork support is performed on the periphery of the prefabricated column root to form a column root pouring cavity; concrete is poured into the column pouring cavity or the column root pouring cavity and the pouring hole through the pouring hole and vibrated; after the concrete pouring is completed, the column anchoring is completed; the problems of hollowing and cracking at the root of the reinforced concrete column are solved; the construction operation is simple and convenient, there is no difficulty in pouring, and there is no problem of difficulty in compacting by vibration, no safety hazards are left, the construction cost is relatively low, and it is suitable for promotion and application.

The utility model relates to the technical field of HPC curtain wall construction, and particularly discloses an HPC curtain wall oversized plate bearing steel frame which comprises a splicing plate upper unit and a splicing plate lower unit which are fixedly arranged, the splicing plate upper unit comprises two first transverse frame main keels and two first frame vertical main keels arranged at the two ends of the first transverse frame main keels, and the splicing plate lower unit comprises two second transverse frame main keels arranged at the two ends of the first transverse frame main keels. The splicing plate lower unit comprises two transverse frame main keels I, two frame vertical main keels II arranged at the two ends of the transverse frame main keels II, and a middle vertical main keel I arranged between the two frame vertical main keels I. The splicing plate lower unit comprises two transverse frame main keels II, two frame vertical main keels II arranged at the two ends of the transverse frame main keels II, and a middle vertical main keel II arranged between the two frame vertical main keels II. And the first transverse frame main keel on one side of the upper unit of the splicing plate is fixedly connected with the first transverse frame main keel on one side of the lower unit of the splicing plate, so that the connecting structure is suitable for connecting the bearing steel frame of the ultra-large HPC curtain wall plate, and has the advantages of being simple in construction operation, safe, reliable and the like.

The invention relates to the technical field of ground-removing underground diaphragm wall reinforcing construction, in particular to a shield ground-removing non-reserved underground diaphragm wall and reinforcing construction accessory and construction method.The shield ground-removing non-reserved underground diaphragm wall reinforcing construction accessory comprises an underground diaphragm wall and an outer sleeve, and the outer sleeve is placed over the underground diaphragm wall; the outer sleeve is composed of a plurality of sleeve bodies, and a threaded sleeve is in threaded connection between the sleeve bodies on the upper side and the lower side. The method has the beneficial effects that the vertical MJS reinforcing technology and the horizontal MJS reinforcing technology are integrated, the vertical MJS reinforcing link focuses on restraining horizontal movement of the underground diaphragm wall, the horizontal MJS reinforcing link aims at preventing sinking of the station main body structure, construction operation is easy, convenient and practical, wide applicability is achieved, and the method is suitable for popularization and application. And the connecting sleeve provided with the special-shaped block is installed on the lower side of the outer sleeve, so that the multiple sections of vertical piles formed through grouting are connected more stably, the machining effect is higher, and powerful technical support is provided for high-quality development of urban rail transit.

The present invention belongs to the technical field of civil engineering construction, and specifically relates to an intelligent high pier concrete spraying and curing device and a construction method, comprising a base arranged on the side of a tower crane of the high pier, the base moves up and down on the tower crane through a transmission mechanism, the base is provided with a rotating seat through a rotating mechanism, the rotating seat is laterally connected with a first connecting rod, the first connecting rod is hinged to the second connecting rod, a first angle controller is arranged between the first connecting rod and the second connecting rod, the second connecting rod is hinged to the third connecting rod, a second angle controller is arranged between the second connecting rod and the third connecting rod; the three connecting rods are provided with nozzles facing the high pier side, the nozzles are evenly provided with a plurality of nozzles, and the nozzles are connected to a water pump; the three connecting rods are formed into required angles through the transmission mechanism, the first angle controller and the second angle controller, the device is convenient to install and disassemble, the construction operation is simple, and selective spraying can be performed, which effectively saves water resources, reduces labor costs, and is convenient to maintain, thereby ensuring the curing effect of the high pier concrete.

The utility model provides a circular ring frame steel structure connecting node which comprises a ring beam circular pipe provided with a plurality of through holes, a first connecting plate is matched with the through holes in an inserted connection mode, a second connecting plate is arranged on the outer surface of the ring beam circular pipe in an attached mode, and the second connecting plate is connected with the first connecting plate. The step of dividing the ring beam circular pipe is omitted, deformation of the ring beam circular pipe caused by the fact that the number of cutting sections of the ring beam circular pipe is large and the number of butt welding seams is large is effectively avoided, machining and installation can be directly conducted on the ring beam circular pipe, and construction efficiency is improved. The problem that the stiffening plates cannot be fully welded due to small pipe diameters is solved, the construction operation is relatively simple, the construction time of a single node is effectively shortened, and the construction efficiency is improved; the first connecting plate is clamped in the through hole of the ring beam circular pipe, the first connecting plate and the ring beam circular pipe are embedded together, and the joint is firm.

The application discloses a construction tool and a construction method of an outward-inclined arch rib. The construction tool comprises a bridge, a plurality of assembling supports, a swivel ball hinge, a horizontal rotation power system and a side rotation power system. The heights of the assembling supports are matched with the arch shapes of the first single arch and the second single arch. The swivel ball hinge is respectively installed at the arch foot of the first single arch and the arch foot of the second single arch. The horizontal rotation power system is used for driving the swivel ball hinge of the first single arch and the second single arch to horizontally rotate and transport to a predetermined position after the assembling of the first single arch and the second single arch is completed. The side rotation power system is used for driving the arch foot of the first single arch and the arch foot of the second single arch to side-rotate around the swivel ball hinge in a direction away from a bearing surface, so that the arch top of the first single arch and the arch top of the second single arch are lifted to a predetermined height position. The construction tool and the construction method of the application do not need to set up supports in water, the service cycle of a ship is short, and the construction efficiency is high.