404 results about "Falsework" patented technology

The invention discloses a press-in type open caisson construction method based on an automatic control system. The automatic control system comprises a data acquisition module, a data analysis and decision module and an execution control module. The data acquisition module is used for collecting data in the sinking process of the open caisson in real time, the data analysis and decision module analyzes the collected data in real time and generates a control instruction, and the execution control module regulates and controls the pressure sinking equipment and the soil sampling equipment according to the control instruction; the construction method comprises the following steps: constructing a ground anchor pile; isolation pile construction; construction of the open caisson: surveying and setting out, excavating a foundation pit, laying a sand cushion layer, laying a concrete cushion layer, constructing a brick moulding bed, erecting a scaffold, erecting a template, binding reinforcing steel bars and pouring concrete; pressing and sinking the open caisson; according to the method, an automatic control system is adopted, various parameters in the open caisson construction process can be monitored and adjusted in real time, uniform sinking of the open caisson is achieved through accurate control over the parameters, and the construction precision and quality are improved.

The application discloses the technical field of building construction, in particular to a post-pouring zone independent support system and an implementation method, which adopts a post-pouring zone first formwork support system to erect a jacking support together with a scaffold and a wooden formwork, cracks and water seepage at a stress position after jacking after the formwork is removed are prevented, and hidden problems are prevented from occurring, through jacking treatment of a top support plate at the top of an inclined support and a vertical support rod two, the jacking and blocking effect of the post-pouring zone is ensured, the blocking effect is ensured by mutually splicing the blocking plates to form a whole, and the vertical height of the vertical support rod one and the vertical support rod two is adjustable to ensure the adaptation to various jacking heights. The post-pouring zone formwork support system after jacking after the formwork is removed can not find cracks and water seepage at a stress position after jacking after the formwork is removed, but the root problem cannot be solved, and only the speed of cracks at the stress position can be temporarily delayed, but various subsequent problems will gradually appear, and normal use is affected.

The invention relates to the technical field of building construction safety, in particular to an outer frame hard protection structure and a construction method thereof.The outer frame hard protection structure comprises a pedal, the pedal is flatly laid on a cross rod of a scaffold, a first baffle is arranged on the side, away from a main body structure, of the pedal, and a second baffle is movably arranged on the side, close to the main body structure, of the pedal. Through assembly of the pedal and the baffles on the two sides, rapid installation can be achieved, the impact resistance and the wind pressure resistance of the outer frame protection structure are improved, small objects are effectively prevented from falling down, and the construction safety is improved; local looseness or separation from a main body structure caused by construction vibration can be avoided.

The steel formwork hydraulic jacking construction method of the heat absorption tower concrete structure comprises the following steps that the first section of tower wall of a heat absorption tower is constructed, a plurality of steel cylinders are inserted into the first section of tower wall of the heat absorption tower in the circumferential direction, and concrete is poured to embed the steel cylinders; scaffolds are erected inside and outside the heat absorption tower respectively; a center drum is assembled in a heat absorption tower, a plurality of steel channels are installed on the top of the first section of tower wall of the heat absorption tower, the center drum is fixed through the steel channels, steel rings are jointly installed at the bottoms of all the steel channels, one jack is fixed to the top of each steel channel, and each jack is correspondingly fixed to one steel cylinder; a stay cable is installed between the channel steel and the central drum, and a hanging bracket is installed on the channel steel; wood formworks are fully laid on the tops of the steel channels, and derrick masts are arranged on the wood formworks; a hydraulic system is installed on the wood formwork; jacking the first section of tower wall of the heat absorption tower, continuously connecting the steel cylinder to the top of the steel cylinder after jacking, and circulating the operation until all jacking work is completed; in the jacking process, the load is greatly reduced, and the construction period is shortened.

The invention discloses a large cantilever concrete structure formwork layered anchor pulling construction method and an intelligent monitoring system, and particularly relates to the field of building construction.The large cantilever concrete structure formwork layered anchor pulling construction method comprises the steps that a 16 # I-steel cantilever heavy frame is installed by pre-burying a high-strength bolt sleeve and conducting three-dimensional positioning; the first to sixth rows of frame bodies are erected layer by layer, a secondary top layer is poured, and the first to fourth phi-20 flower basket pull rods are sequentially installed after top layer concrete is poured; then main and secondary keels and an adjustable jacking are installed, a formwork is laid, and the elevation is corrected to be + / -3 mm; steel bar numerical control machining straight thread connection and water and electricity pre-burying are synchronously completed; arranging a vibrating wire strain gauge, a spoke pressure gauge and a tilt angle sensor, uploading data to the BIM in real time, and establishing load-deformation dual-threshold early warning; after the formwork is removed, a scaffold and a main body structure are tied and reinforced in time at the upturning ridge of the eave gutter on the top layer of the concrete structure according to a wall connecting piece method through steel pipe fasteners; the formwork and the outer protection frame are integrated, concrete is poured twice, early warning and alarm linkage are achieved, and safety and high efficiency are achieved.

The invention discloses a collaborative supervision method and system for a construction project, and relates to the technical field of construction project supervision, and the method comprises the steps: obtaining various types of basic information of the construction project; and based on the real-time change characteristics of various types of information in the basic information, determining differential collaborative supervision period information. According to the collaborative supervision method and system for coping with the construction project, the collection points covering the whole range of the construction area are used; four types of core information including engineering design data such as a structure change list, a construction progress record such as process connection time, a material quality certificate such as a steel bar mechanics detection report and an on-site safety inspection result such as a scaffold acceptance record are synchronously obtained, and accurate classification is carried out according to features; the collaborative acquisition of the multi-source information thoroughly changes the one-sidedness in the traditional supervision; in the residential building construction process, a supervisor can rapidly position the root cause of the problem, namely insufficient personnel qualification instead of materials, by integrating the material information and the safety information, and misjudgment caused by single information is avoided.

The utility model relates to the technical field of building construction, and discloses a detachable conveying device and a feeding system, which comprise a support, a conveying device and a feeding device, the sliding rail comprises at least two rails, and the at least two rails are fixedly connected to the support in parallel; the transport vehicle comprises pulleys and a bottom plate, the pulleys are arranged below the bottom plate, and the pulleys are suitable for moving along the sliding rails. According to the detachable transportation device, existing construction materials on a construction site are assembled into the detachable transportation device, the construction materials can be conveniently transported inside and outside a building after the top of the building is sealed, the structure is simple, and the cost is low.

The invention discloses a construction technology of a squat silo top formwork system, and belongs to the technical field of silo construction, and the construction technology comprises construction of a conical shell top plate supporting system, and comprises the following steps: reserved hole construction: when a silo wall slip form is constructed to an elevation, a plurality of reserved holes are uniformly distributed in a silo wall along the circumferential direction; mounting a central upright post, hoisting the central upright post to a foundation at the central position of the warehouse, arranging four cable ropes for temporary fixation, then erecting double-row scaffolds around the upright post, and carrying out column embracing connection by using steel pipe fasteners and a central steel pipe every 1.5 meters; a top conversion platform is installed, the assembled conversion platform is lifted to the top of the center stand column through a tower crane, and the conversion platform is in bolt connection with the center stand column through a round pipe; bailey frames are installed, the two sides of one end of each Bailey piece are welded to the conversion platform through channel steel to limit sliding of the Bailey beams, the other end of each Bailey piece is placed at the reserved hole of the bin wall, and the Bailey beams are placed in the central symmetry direction in sequence. The stability of the supporting system is improved.

The present invention relates to the field of bridge construction equipment, and specifically discloses an assembled steel pipe falsework support assembly, including: a support column, a hoop assembly installed on the support column, a cross brace and a diagonal brace are fixedly connected to the hoop assembly through a gusset plate, a suspension assembly is installed on the hoop assembly, a hook portion is provided on one side of the cage ladder, and the hook portion can be detachably suspended on the suspension assembly, and sleeves and joints are provided on the cage body. By arranging two or more hoop bodies on the hoop assembly and connecting them with the cross brace column and the diagonal brace column through the gusset plate, the connection strength of the support structure is ensured; and by installing a suspension assembly on the hoop body to install a detachable cage ladder, and the spliced cage ladder can be increased according to the increase in the height of the support column, and the cage ladders are mutually installed through the sleeves, which not only ensures the strength and reliability but also improves the overall maintainability of the falsework.

A jig frame supporting system of a special-shaped large-section annular prestressed concrete structural beam comprises a bearing platform, stand columns and stand column connecting rods, the stand columns are connected through the stand column connecting rods to form a frame body, and the bearing platform is arranged at the top of the frame body. The bearing platform is used for temporarily bearing the weight of the special-shaped large-section annular prestressed concrete structural beam and the template system thereof; the column connecting rod is horizontally or obliquely arranged; the bearing platform comprises profile steel keels arranged in a crisscross manner, and the bottoms of the profile steel keels are fixedly connected with the vertical rods through bolts; the bearing platform is connected with the stand columns through bolts, and the stand columns are connected with the stand column connecting rods through bolts. Compared with an existing plate buckle type scaffold supporting system, the jig frame supporting system has the advantages of being small in overall weight, high in bearing capacity, convenient to produce in batches, convenient and fast to install and low in labor requirement.

A detachable open caisson internal operation platform relates to the technical field of municipal engineering construction, is arranged on the inner side of the side wall of an open caisson, and comprises a plurality of upper preformed holes which are transversely and uniformly formed in the inner side of the side wall of the open caisson at intervals and a plurality of lower preformed holes which are transversely and uniformly formed in the inner side of the side wall of the open caisson at intervals, the operation platform further comprises platform supports which are detachably matched with the upper preformed holes and the lower preformed holes in an inserted mode, and a scaffold is erected on the multiple platform supports to form the operation platform. The platform support is convenient to assemble and disassemble and can be repeatedly used, the upper preformed hole and the lower preformed hole are small, the open caisson structure cannot be damaged, waterproof construction is not affected after plugging, and the platform support is simple and compact in structure and high in practicability.

This invention discloses a construction method for cast-in-place box girder spanning an existing overpass, comprising the following steps: Step 1: Construction preparation stage, including foundation treatment, formwork processing, and steel reinforcement processing; Step 2: Erection and reinforcement of full-span scaffolding. First, the scaffolding is erected. After the scaffolding is erected, the bottom formwork and outer side plates of the box girder are installed. Then, the scaffolding is pre-stressed. After unloading, the elevation of the bottom formwork is adjusted as needed. Finally, the inner side formwork and the bottom formwork of the top plate of the box girder are installed; Step 3: Casting of the box girder. After the entire cross-section of the box girder is cast, it is cured. Tensioning is performed when the concrete strength reaches 85% of the design strength, and finally, grouting is carried out; Step 4: Dismantling of the scaffolding. In this invention, disc-lock full-span scaffolding is used to reinforce existing highway bridges. Disc-lock full-span scaffolding is then erected on top of the existing highway bridge as cast-in-place scaffolding. Installation and dismantling are convenient and can save construction time.

The utility model discloses a lining construction formwork supporting system for a TBM marshalling train rail-mounted area of a subway station. The device comprises a movable door frame and a full disc buckle type scaffold, the movable door frame is arranged in a rail-mounted area in a crossing mode and comprises a plurality of door-type steel frames which are arranged at intervals and connected into a whole, lower cross beams are arranged on the lower portions of stand columns on the two sides of the movable door frame, and H-shaped rail wheels are arranged on the lower portions of the lower cross beams. The movable gantry is movably arranged on gantry steel rails arranged on the two sides of a track area through H-shaped track wheels, a plurality of inclined struts are arranged at the bottoms of the two sides of the movable gantry at intervals, one end of each inclined strut is fixedly connected with a lower cross beam of the movable gantry, and the other end of each inclined strut is fixed to the ground through two reinforcing steel bars which are 25 mm in diameter and implanted into a hardened face. The all-round disc buckle type scaffold is erected on the outer side of the movable portal frame, the all-round disc buckle type scaffold in the rail-mounted area range is located on an upper cross beam of the portal steel frame, and formworks at the position of a station side wall are horizontally and oppositely supported through steel pipes.

The invention discloses an assembly type dense rib rapid assembling and disassembling combination system which comprises a formwork, a formwork, a jacking and a transverse supporting steel pipe. The mold shell is provided with a cavity with a downward opening, the lower edge of the cavity horizontally extends outwards to form a flange edge, and a groove extending along the edge is formed in the upper side of the outer edge of the flange edge; the lower surfaces of the multiple mold shells are coplanar and arranged in a matrix mode. The two ends, in the width direction, of the formwork are erected on the bottoms of the grooves of the two adjacent formwork shells correspondingly, and the formwork and the flange edges are fixed through nailing type connecting pieces. The top supports are arranged below the corners of the four mold shells forming the square block; the transverse supporting steel pipes are laid on the top supports, each top support is correspondingly provided with two transverse supporting steel pipes, and the two transverse supporting steel pipes abut against the lower side faces of the flange edges of the two adjacent mold shells in a one-to-one correspondence mode. The method has the beneficial effects that the defects of edges and no edges are reduced, a traditional wood formwork is saved, slurry leakage is avoided, formwork reversing is convenient, cleaning and sanitation are facilitated, the formwork shell is not prone to being damaged during disassembly, cost is saved, assembly and disassembly are fast, labor is saved, the using amount of scaffolds and plate buckles is low, concrete is saved, and it is guaranteed that the secondary beams and the edge beams are not damaged by formwork removal, and the attractive state is not damaged.

The invention relates to the technical field of building formwork erecting, in particular to a steel-concrete combined type floor formwork erecting construction method which comprises the following steps that a formwork is arranged below an upper flange plate of a steel beam, the formwork extends into the lower portion of the upper flange plate of the steel beam, and a sponge strip is arranged between the upper flange plate of the steel beam and the formwork; secondary keels are arranged below the formwork and are parallel to the steel beams at equal intervals, and the secondary keels are fixedly connected with the formwork; the height of the main keel and the height of the vertical supporting mechanism are determined, the main keel is perpendicular to the secondary keel and tightly attached to the lower portion of the secondary keel, the vertical supporting mechanism is adopted to abut against and fix the main keel, and the bottom of the vertical supporting mechanism is supported on the top face of a lower flange plate of the steel beam; after the formworks are erected, steel bar meshes are laid on the formworks, and finally concrete is poured; and after the floor support plate reaches the corresponding standard strength, the vertical supporting mechanism, the main keel, the secondary keel and the formwork are sequentially dismantled. Scaffold supporting is not needed below the formwork, aloft work is reduced, the construction speed is increased, and cost is saved.

The invention discloses a plain concrete pile foundation support cast-in-place beam and a construction method thereof, and the construction method comprises the steps of firstly constructing plain concrete piles and erecting a strip-shaped foundation, constructing a supporting support on the strip-shaped foundation, erecting a plate buckle scaffold on the supporting support, and then erecting a beam template and constructing a beam body structure. The problem that the bearing capacity of a cast-in-place bridge construction foundation is insufficient under the deep soft foundation geological condition can be effectively solved, the construction technology is complete, the construction process is safe, quality control is effective, follow-up large-area plain concrete pile support cast-in-place beam construction can be effectively guided, driving movement can be conducted through the carrying and moving mechanism structure, and the construction efficiency is improved. And during moving, the whole parts can be moved, so that the moving is more efficient and convenient, the whole body can be effectively ensured, and the subsequent building construction is more convenient.

The application discloses a bridge maintenance platform and a maintenance method, wherein the bridge maintenance platform comprises a longitudinal support beam and a walking mechanism slidingly installed on the longitudinal support beam; the longitudinal support beam is horizontally arranged and fixedly connected with a bridge; a manned lifting mechanism is hung below the walking mechanism; and the walking mechanism drives the manned lifting mechanism to move horizontally along the longitudinal support beam. The bridge maintenance platform can be fixed on the bridge, does not affect the traffic on the bridge and the navigation under the bridge, can be fixed on the bridge for a long time, can be used for the bridge inspection and maintenance at any time, and the staff can stand on the bridge maintenance platform to control the movement of the bridge maintenance platform to conduct the dead angle-free inspection and maintenance on each part of the bridge without the need of erecting a scaffold, thereby saving time and effort. The bridge maintenance platform is not affected by the traffic on the bridge and the topography and geomorphology under the bridge, and is suitable for the maintenance of various bridges.

The utility model relates to the technical field of building engineering, concretely relates to the optimization design of the structure of external scaffold and steel sheet net connecting device, the utility model is realized through the following technical scheme: a kind of external frame steel sheet net connecting device, including connecting steel pipe and connecting plate, the one end of connecting steel pipe is provided with the slot for the insertion of connecting plate along its length direction, and the slot extends the clamping interface of connecting steel pipe in the circumferential direction;Connecting plate includes the horizontal main part of part insertion in the connecting steel pipe, and the convex part of the clamping interface resistance cooperation that is outwardly extended horizontally from horizontal main part. The utility model aims at the improvement of the structure of connecting steel pipe and connecting plate itself, the stable connection of both can be realized without additional connecting bolt, eliminate the security risk caused by bolt drop, enhance the security and stability in construction process.

The application relates to a wall reverse construction method and a construction device, and relates to the technical field of building wall construction. In order to solve the problem that it is inconvenient to convey blocks to a high scaffold for wall construction by construction personnel, the device comprises a base, a construction platform, a guide pipe and a lifting arm. A plurality of moving wheels are arranged on the base. The construction platform is arranged on the base in a liftable mode. The guide pipe is vertically arranged on the base. One end of the guide pipe is telescopically connected to a floor slab. The lifting arm is slidably arranged on the guide pipe and is used for conveying blocks. The application has the effect that the construction personnel can conveniently perform block laying work on the wall at a high position.

This invention belongs to the field of bridge maintenance technology and proposes a method for reinforcing cracks in bridge corbels, including the following steps: S1. Scaffolding erection; S2. Bridge bottom surface cleaning; S3. Vertical drilling of the bridge; S4. Erection of the reinforced box girder; S5. Fixing of the reinforced box girder; S6. Side formwork erection; S7. Grouting; S8. Formwork removal; S9. Groove filling and post-construction maintenance. This invention provides a strong support to the original bridge bottom surface by reinforcing the box girder and injecting reinforcing grout into the cracks and grouting cavities. After the grout solidifies, it not only repairs the damaged cracks inside the corbel but also tightly bonds the reinforced box girder, the solidified grout, and the original bridge structure together, improving the reinforcement effect and overall load-bearing capacity of the bridge corbel.

The utility model discloses a support-free detachable fixed template application structure applied to an assembly type structural system, which comprises a prefabricated truss reinforced concrete lower chord member, a floor slab prefabricated layer, more than one group of connecting supports and through fixing bolts, the connecting supports are arranged on the two sides of the prefabricated truss reinforced concrete lower chord side by side, a space used for pouring the truss reinforced concrete upper chord is formed between the opposite connecting supports, the connecting supports are installed on the prefabricated truss reinforced concrete lower chord through oppositely-penetrating fixing bolts, and the floor slab prefabricated layer is connected to the upper portions of the connecting supports in a lap joint mode. By the adoption of the method, a part of or even all scaffolds can be omitted, and the detachable standard connecting support designed in the utility model can be used as a temporary support of a main beam cast-in-place part side mold and a floor slab at the same time, and is fixed on a main beam prefabricated part through a split bolt; and the split fixing bolts in the cast-in-place height range can be accurately positioned according to the width requirement and support is formed.

The utility model relates to the technical field of building construction, and provides a liftable protective shed for a construction elevator in a hoistway, which comprises a protective platform and a support frame arranged below the protective platform; the supporting frame comprises a supporting platform, a vertical supporting rod, an inclined supporting rod and a clamping angle short rod. The supporting platform, the vertical supporting rods and the inclined supporting rods are connected to form a right triangle structure. The upper ends of the vertical supporting rod and the inclined supporting rod are connected to the two ends of the supporting platform respectively. The corner clamping short rod is connected to the joint of the lower ends of the inclined supporting rod and the vertical supporting rod, a right-angle bayonet with a downward opening is formed by the corner clamping short rod and the lower end of the inclined supporting rod, and the right-angle bayonet is used for abutting against the edge of a lower building structure; the end, connected with the inclined supporting rod, of the supporting platform is used for abutting against the side wall of the upper building structure. The protective shed can meet the requirements for rapid movement and reutilization, the problem that a scaffold needs to be disassembled and erected repeatedly in a traditional protective mode of the elevator shaft is solved, manpower and material resources are saved, the construction period is shortened, and rapid construction is facilitated.

This invention provides a rapid installation method for a building construction machine, comprising: Step 1: completing the construction of the wall structure from the first to the third floor and pre-embedding the anchor points; Step 2: installing vertical support structures at the anchor points using suspension shoe assemblies; Step 3: dismantling the inner scaffolding and installing the hanging anchor point supports; Step 4: hoisting the lower part of the inner frame; Step 5: hoisting the upper part of the inner frame, which is then hoisted after the lower frame is securely installed and fixed to the lower frame; Step 6: assembling the top construction platform in sections and groups as much as possible from the ground, then hoisting it to the corresponding vertical support structures and fixing it thereto; Step 7: dismantling the outer scaffolding, hoisting the outer construction platform, and installing it to the top construction platform; Step 8: carrying out the hoisting construction and completing the installation. This method enables rapid installation of the building construction machine.

This invention discloses a lifting support device, belonging to the technical field of pipe fitting construction equipment. The lifting support device includes: a support frame, a bracket, a height adjustment device, and a horizontal movement device. The bracket supports the pipe fittings, is mounted on the support frame, and is vertically movable along the support frame. The height adjustment device is connected to the bracket and is used to move the bracket vertically and stop it at a predetermined height. The horizontal movement device is located at the bottom of the lifting support device and is used to allow the lifting support device to move freely horizontally. During the disassembly or installation of pipe fittings, the bracket provides support, eliminating the need for scaffolding. The horizontal movement device allows the lifting support device to move horizontally, enabling the lifting support device to transport the pipe fittings, saving manpower and resources, improving work efficiency, and enhancing construction safety.

The application relates to the technical field of building construction, in particular to a structure reserved hole cantilever plate reinforcing construction method.The method comprises the following steps of S1, obtaining structure plate horizontal reserved hole related parameters; S2, establishing a BIM model according to the obtained structure plate horizontal reserved hole related parameters; S3, determining the reserved hole position and size according to the established BIM model; and S4, determining the added structure beam section model by using stress software according to the reserved hole position and size; the PKPM software is used for component stress calculation and analysis, the support steel beam structure deformation and safety analysis are designed, and the scheme safety and accuracy are guaranteed. The added structure beam structure system greatly reduces the construction cost caused by full-support scaffold measures.

The application discloses a kind of steel building body arc piece connection construction method, comprising: the following arc steel beam piece is stressed whole to the arc steel beam piece on top and is supported, to present the construction process of the fixed pull tie system of steel building body arc piece.The arc steel beam piece of lower side is connected and positioned by spot welding plate and steel structure building body side edge spot welding connection, simultaneously by pull rod pull tie stress and bottom support rod support, so that the arc steel beam piece of lower side forms stressed whole to install upper support rod support in the arc steel beam piece on top, after the arc steel beam piece on top is welded and fixed with steel structure building body by welding layer, the arc steel beam piece of lower side can be welded with steel structure building body immediately, solve the problem that after the arc steel beam piece on top is supported by erecting scaffold from ground and construction, it needs to be disassembled to install and construct the arc steel beam piece of lower side, improve construction efficiency.

The application relates to a design and construction method of an assembled concrete pipe gallery. The construction method comprises the following steps: S1, prefabricating a concrete column and a concrete beam, the end of the concrete beam is reserved with exposed beam end steel bars, and the connecting side surface of the concrete column is embedded with protruding column side steel bars; S2, hoisting the concrete column, anchoring the lower end of the concrete column in the bearing platform foundation, and adjusting and fixing the verticality and elevation; S3, installing an independent temporary support structure between two adjacent installed concrete columns; S4, hoisting the concrete beam, erecting the two ends of the concrete beam on the temporary support structure, and cross-over arranging the beam end steel bars and the column side steel bars to form a steel bar connecting joint; the application greatly reduces high-altitude operation and the use of a scaffold, the main operation is completed on the ground or at low altitude, the safety risk is reduced, prefabrication and installation can be carried out in a flow, and the construction period is significantly shortened.

This invention provides a prefabricated building construction platform and its construction method, belonging to the field of building construction sorting technology. The prefabricated building construction platform and its construction method include a support assembly and guide rails. Multiple guide rails are spaced apart front to back and are fixedly installed on embedded parts in the wall, extending vertically. The support assembly is fixedly connected to the embedded parts on the wall. A support plate is provided at the top of the support assembly, extending horizontally. Mounting frames are provided at both ends of the support plate, and an operating platform is fixedly connected between two mounting frames. A vertically connected passage is provided on the operating platform. The support assembly supports the support plate, mounting frames, and operating platform. A hydraulic mechanism enables the support plate, mounting frames, and operating platform to be raised and lowered. This eliminates the need for extensive scaffolding to support the operating platform, reducing material waste and improving work efficiency.

The utility model provides an engineering building scaffold convenient to feed, which belongs to the technical field of scaffolds and comprises a scaffold body, a mounting plate arranged on one side of the top of the scaffold body, a triangular fixing frame arranged on one side of the mounting plate, supporting frames arranged on two sides of the bottom of the triangular fixing frame, and guide rails arranged on two sides of the supporting frames. A moving block is slidably connected into the guide rail, a moving pulley is rotatably connected to the inner side of the moving block, an article placing frame is arranged at the bottom of the moving block, an upper traction wheel is rotatably connected to the top of the supporting frame, a synchronous motor is embedded in one side of the supporting frame, a winding shaft is fixedly connected to the output end of the synchronous motor, and a traction cable is arranged among the winding shaft, the moving pulley and the upper traction wheel. According to the engineering building scaffold convenient to feed, the traction force of the output end of the synchronous motor is reduced through the movable pulley of the movable pulley structure, the load of the output end is reduced, and therefore heavier objects can be pulled through smaller power.

The invention discloses a high-variable-step raft concrete integrated construction method, and relates to the technical field of building construction. The method is implemented according to the steps of positioning and paying off, steel bar binding, inner frame installation and support throwing, concrete pouring, formwork removal and support throwing. Construction joints are reduced through integrated pouring, and the leakage risk is reduced; the ring buckle inner frame is reasonably arranged and can also serve as a top plate scaffold, and repeated operation is reduced; and the embedded steel bars are matched with the adjustable base to guarantee construction stability. The method can improve the integrity of the raft, simplify the process, shorten the period and reduce the cost, and is suitable for variable-order raft construction of high-rise building complex engineering.