51results about How to "Reduce construction steps" patented technology

The high-performance magnesium alloy building template comprises a magnesium alloy plate, an even number of preformed holes are formed in the outer surface of the magnesium alloy plate, a template frame of an integrated structure is fixed to the surface of the magnesium alloy plate, side edge grooves are formed in the upper outer wall, the left outer wall and the right outer wall of the template frame, and a plurality of bolt penetrating holes are formed in the side edge grooves. After the magnesium alloy plate is erected, under the assistance of the alignment groove blocks and the butt joint blocks in the side edge grooves in the two sides of the formwork frame, splicing of the formwork frame is completed to form a wall shape, then the fasteners can be directly moved, and the auxiliary sliding rods are matched with the sliding pieces to complete vertical displacement of the first clamping beam and the second clamping beam; according to the building template supporting frame, rapid connection with a clamping beam on a template frame is completed, then alignment penetrating holes are aligned with lock bolt holes and bolt penetrating holes to complete penetration of lock bolts, direct tightening of the clamping beam is completed, stability and fixity are further provided, meanwhile, compared with a traditional building template rear installation template supporting frame, construction steps and time efficiency can be reduced, accessories during carrying are reduced, and cost is reduced. And the operation efficiency is effectively improved.

The utility model discloses a lifting mechanism capable of automatically adjusting a counter weight, and belongs to the field of construction equipment. According to the lifting mechanism, a suspension arm is hinged to a rotary supporting platform, and vertical swing of the suspension arm is achieved through an amplitude modulation oil cylinder; the balance arm is formed by hinging one end of a first arm section and one end of a second arm section, the other end of the first arm section is hinged to the rotary supporting platform, and a weight used as a balance weight is fixed to the other end of the second arm section. The two ends of the push-pull oil cylinder are hinged to the first arm section and the rotary supporting platform respectively, and the pitch angle of the first arm section is changed through stretching and retracting of the push-pull oil cylinder. The two ends of the balance arm jacking oil cylinder are hinged to the first arm section and the second arm section respectively, and the opening angle between the first arm section and the second arm section is changed through stretching and retracting of the balance arm jacking oil cylinder. According to the lifting mechanism, the balance moment can be dynamically adjusted through matching of different oil cylinders, so that the balance bending moment of the lifting mechanism is dynamically adjusted, and the lifting weight of the lifting mechanism is increased.

The utility model discloses a hydraulic lifting platform for offshore pile splicing operation, which comprises an operation platform and a platform base, the operation platform is positioned above the platform base, a scissor lifting device is arranged between the operation platform and the platform base, and a lifting lug is arranged on the platform base. By means of the working platform, the platform base and the scissor lifting device which are matched with one another, a pile splicing platform does not need to be built, construction steps are effectively reduced, the working efficiency of pile splicing is greatly improved, and the platform can be repeatedly used.

The utility model discloses a connecting channel structure of a climbing frame and a tower crane, which is characterized in that a frame structure is fixed on the climbing frame through a steel pull rod and a bottom frame, can move upwards along with climbing of the climbing frame, and only needs to be mounted and dismounted once, so that frequent mounting and dismounting operation of a steel pipe fastener type channel in the traditional technology is avoided, and the construction step of mounting and dismounting for multiple times is omitted; therefore, manpower is saved, the labor intensity of field worker construction is reduced, the construction period is shortened, and the construction efficiency is improved. A frame structure is adopted as a force bearing main body of the channel, and handrails, a steel fence net and a punching protective net are added as reinforcing structures, so that compared with a traditional channel, the channel has higher stability and reliability, and the safety risk is reduced; the turnover plate is arranged on the bottom frame, the turnover plate can be in lap joint with a tower crane standard knot during use, a pedal is provided for passing of a tower crane driver, the falling risk of the tower crane driver is reduced, the turnover plate is taken back when the climbing frame needs to climb, and the climbing frame is flexible and convenient to use.

The invention discloses a highway bridge girder erection machine tunnel portal installation method. The method comprises the steps that round girders of middle supporting legs are placed on the edge of a tunnel portal abutment; assembling a main beam on the roadbed at the other end of the tunnel and hoisting the main beam to a beam transporting vehicle; a riding wheel group of a middle supporting leg is mounted at the lower end of the main beam; conveying the main beam from the other end of the tunnel to a round girder of a middle supporting leg at a tunnel portal, and connecting a riding wheel group of the middle supporting leg with the round girder in a matching manner; a temporary support for supporting the rear end of the main beam is installed in the tunnel, and the main beam is unloaded from the beam transporting vehicle; temporary rear supporting legs for supporting the rear ends of the main beams are installed in the tunnel; a front supporting leg, a front auxiliary supporting leg, a front upper cross beam, a rear upper cross beam and a main beam connecting rod are sequentially installed through a crane, and a longitudinal moving truss vehicle and a crown block are installed on a main beam; installing a whole machine electrical system and a safety device; the middle supporting leg is retreated to the middle of the main beam, and a balance weight is hung at the rear end of the main beam; and the whole machine moves forwards, the main beam moves forwards to the bent cap, and hole passing is completed. According to the method, the construction sequence is optimized, the construction efficiency is improved, and the safety in the construction process is ensured.

The utility model relates to the technical field of high pile beam slab wharf construction, and discloses a precast pile cap structure for platform-free underwater construction, which comprises a pile cap body, a pile foundation structure is arranged at the bottom of the pile cap body, the pile cap body is connected with the pile foundation structure through concrete grouting, and the pile cap body is connected with the pile foundation structure. The surface, close to the top, of the pile foundation structure is sleeved with a hoop mechanism, and the top of the hoop mechanism is attached to the pile cap body. According to the precast pile cap structure for platform-free underwater construction, the problems that in the prior art, no matter cast-in-place pile cap construction or precast pile cap construction is conducted, a construction platform needs to be erected in the construction process to serve as a supporting and bearing system of a pile beam, it is difficult to erect a platform at the end of a columnar pile beam, the construction efficiency is affected, and in addition, the construction cost is lowered are solved. In order to guarantee the construction quality, construction on the water surface needs to be carried out, so that the construction is greatly influenced by the water level, and the construction condition is harsh for a wharf pile cap structure close to the water surface.

The present invention relates to a small unit aluminum plate vertical line curtain wall system, and relates to the technical field of curtain wall installation, including a curtain wall unit and a decorative unit arranged between adjacent curtain wall units; the curtain wall unit includes a column, a beam fixed between adjacent columns, and a glass curtain wall arranged on the column and the beam; the decorative unit includes a horizontal keel, a first vertical keel fixed between the horizontal keels, a second vertical keel respectively fixed at both ends of the horizontal keel, and an aluminum single plate fixed on the first vertical keel and the second vertical keel, and the second keel is connected to the column through a connecting assembly. The present invention has the advantages of high installation efficiency, saving construction period, and strong quality controllability.

The utility model discloses a vertical shaft type water inlet and outlet structure of permanent and temporary combination in the technical field of water conservancy and hydropower engineering, including vertical shaft diffusion section, the outside of vertical shaft diffusion section is from top to bottom sequentially provided with a plurality of arch wall, the periphery fixed connection of vertical shaft diffusion section has a plurality of pile foundation, the arch wall is located between pile foundation and vertical shaft diffusion section. The utility model discloses a pile foundation is arranged outside vertical shaft diffusion section, can guarantee the stability of vertical shaft excavation process, sets up the arch wall between pile foundation and vertical shaft diffusion section, and the arch wall is as supporting wall body and structure outer wall simultaneously, need not to set up horizontal temporary support additionally, guarantees the safety of excavation process, and also does not have the problem of dismantling, to reduce the construction step, shortens the period of construction.

The invention provides a secondary reinforcing device and method for a reinforced concrete beam without dismantling a reinforcing steel plate, the device comprises an anchoring part, a connecting steel bar and a reinforced concrete layer, the steel plate is attached to the surface of the concrete beam and the reinforced steel plate, and the steel plate and the concrete beam are connected and anchored through bolts; the anchoring parts are connected with the concrete beam in an anchoring mode, meanwhile, the anchoring parts are arranged below the steel plate in a striding mode, the anchoring parts are connected into a whole through the connecting steel bars, and the area where the anchoring parts, the connecting steel bars and the steel plate are located is filled with the reinforced concrete pattern layer. On the basis that an existing reinforcing steel plate does not need to be dismantled, the flexural capacity and rigidity of the concrete beam are improved, construction steps are reduced, the construction efficiency is improved, meanwhile, the adopted geopolymer concrete is low in carbon emission and high in fireproof performance, and it can be guaranteed that the construction process is environmentally friendly and resistant to high temperature in the construction process.

A post-cast strip special-shaped disc buckle back shore node comprises a triangular lattice type disc buckle frame, the triangular lattice type disc buckle frame comprises supporting main pipes and cantilever frames, connectors used for being connected with a top support are reserved at the top ends of the supporting main pipes, and the cantilever frames are fixed to the same sides of the two supporting main pipes. The length of the cantilever frames is matched with the distance between the central axis of the post-cast strip and the outermost side, close to the post-cast strip, of the formwork supporting frame, the two cantilever frames are arranged in parallel, and the two supporting main pipes and the ends, away from the supporting main pipes, of the two cantilever frames are connected and fixed into a whole through horizontally-arranged transverse connecting rods. The end, away from the supporting main pipe, of the cantilever frame is fixedly provided with a vertically-arranged cannon head used for being connected with a jacking, and a first disc buckle is fixedly arranged at the joint position, connected with the transverse connecting rod, of the exterior of the supporting main pipe in a sleeving mode. The device is convenient to erect, sufficient in space and stable in structure, the maintenance cost caused by common problems can be reduced, and the stability and the safety of a main body structure in the construction period are ensured.

The utility model discloses a concrete precast beam formwork device which comprises a formwork platform, a walking mechanism is arranged on the lower portion of the formwork platform, side formwork assemblies are arranged on the two sides of the upper portion of the formwork platform, and a demolding mechanism is arranged between the side formwork assemblies and the formwork platform to drive the side formwork assemblies to open or close a mold on the formwork platform. The walking mechanism is arranged below the formwork platform, the side formwork assemblies are arranged on the two sides of the upper portion of the formwork platform, and the demolding mechanism is arranged between the side formwork assemblies and the formwork platform, so that the side formwork assemblies can be subjected to mold opening or mold closing on the formwork platform; the demolding mechanism drives the side formwork assembly to directly demold on the formwork platform, the formwork does not need to be transferred to a special demolding station to be demolded, the structure is simple, use is convenient, construction steps are reduced, and the site needed by precast beam production is saved.

The present invention relates to the technical field of bridges, and specifically to a corrugated steel plate profiled steel support system and a construction method; the support system is installed between the webs of the main beams, and the corrugated steel plates and the bridge deck concrete cast on the corrugated steel plates are supported by the support system, and the characteristics are: the support system is composed of a number of transverse square steels and longitudinal square steels installed with each other, the two ends of the transverse square steels are connected between the main beam top plate and the main beam web by connecting plates, the corrugated steel plates are placed on the main beam top plate and the longitudinal square steels, and the bridge deck concrete is cast on the corrugated steel plates. The corrugated steel plate profiled steel support system has the characteristics of simple structure, lightness, reliability, and easy installation. Without greatly increasing the amount of materials and construction measures, it provides effective support for the weaker corrugated steel plates, and ensures the structural performance of the corrugated steel plate composite bridge deck. The system can be widely used in the support structure of various types of corrugated steel plate composite panels.

The invention relates to the technical field of geological monitoring, and discloses a rock mass internal deformation monitoring device, which comprises an anchor rod; the mounting rod is provided with a mounting position for mounting a sensor, and the mounting rod is detachably connected with the anchor rod; the transmission processing mechanism comprises a conduction optical fiber, a tail fiber wire harness, an optical splitter, a leading-out wire and an optical fiber demodulator, the conduction optical fiber is used for being connected with the sensor, the optical splitter is connected with the conduction optical fiber through the tail fiber wire harness, and the leading-out wire of the optical splitter is connected with the optical fiber demodulator. Thus, the installation rod provided with the sensor is connected with the anchor rod easily, and the situation that the construction efficiency is reduced due to installation of the sensor can be avoided as much as possible while the requirement for deformation monitoring of the geological rock-soil body is met.

The invention discloses a steel box girder hoisting pushing construction system for constructing a temporary support slideway, which comprises a pushing assembly and a temporary pushing support assembly, the pushing assembly comprises a force transmission steel strand and a pushing device, the force transmission steel strand is connected with a steel box girder, one end of the steel box girder is detachably provided with a guide beam, the pushing device drags the force transmission steel strand to push the steel box girder to move, and the temporary pushing support assembly is connected with the force transmission steel strand. The temporary pushing support assembly comprises a starting pushing support, a plurality of middle pushing supports, a counter-force pushing support, a crossing pushing support and an end point pushing support, and the upper side of the starting pushing support, the upper sides of the middle pushing supports, the upper side of the counter-force pushing support, the upper side of the crossing pushing support and the upper side of the end point pushing support are each fixedly provided with at least one sliding way assembly. The pushing device is detachably arranged on the counter-force pushing support. According to the incremental launching construction system, repeated jacking, descending and resetting are not needed, and the construction efficiency is improved. The other purpose of the invention is to provide a construction method which is few in construction steps, high in construction efficiency and low in safety risk.

The invention belongs to the technical field of oil exploitation, and particularly discloses a water-soluble shunting agent as well as a preparation method and a use method thereof. According to the prepared water-soluble shunting agent, hydrochloric acid and ammonium fluoride are added into water, the shunting agent, the chelating agent, the corrosion inhibitor and the anti-swelling shrinkage agent are added after uniform mixing, online shunting acid is obtained after uniform stirring, the shunting acid is injected into a well, temporary plugging particles are formed by the shunting agent in an acidic environment, the shunting agent can enter a high-permeability layer with small flow resistance more easily, and the water-soluble shunting agent can be used for well drilling. And shielding bridge plugging is formed on a high-permeability channel, so that acid liquor diversion and steering are realized, the acid liquor enters low-permeability, ultra-low-permeability and compact oil reservoir channels, effective plugging removal is performed on the acid liquor, and good diversion and guiding performance is achieved.

The invention relates to the field of house building construction, and particularly discloses a fabricated beam-column connecting structure and a construction method. The assembly type beam column connecting structure comprises a prefabricated beam, an upper prefabricated column and a lower prefabricated column, a through hole is formed in the prefabricated beam in a penetrating mode in the vertical direction, a transverse steel bar is arranged in the prefabricated beam and penetrates through the through hole, the two sides of the through hole communicate with an upper inserting groove and a lower inserting groove correspondingly, the upper prefabricated column is inserted into the upper inserting groove, and the lower prefabricated column is inserted into the lower inserting groove; a first vertical steel bar is arranged in the prefabricated upper column, a slurry outlet groove communicating with the through hole is formed in the side, close to the prefabricated cross beam, of the prefabricated upper column, and one side of the slurry outlet groove communicates with a slurry outlet hole. Second vertical steel bars are arranged in the prefabricated lower columns, slurry inlet grooves communicating with the through holes are formed in the sides, close to the prefabricated cross beams, of the prefabricated lower columns, and slurry inlet holes communicate with one sides of the slurry inlet grooves. The diameter of the through holes is large, flowing of grouting materials is facilitated, the compactness of the grouting materials is improved, and the comprehensive strength of the beam-column connecting structure is guaranteed.

The invention discloses a steel structure factory building outer wall and an outer wall construction method, and relates to the technical field of building construction. The gusset columns are respectively arranged at four corners of the peripheral concrete ground of the plant; the middle columns are uniformly arranged between every two angle brace columns; according to the curtain wall installation structure, after the angle brace columns and the middle columns are positioned and installed, the angle brace columns and the middle columns are deflected in a staggered mode, and then curtain walls are installed on the angle brace columns and the middle columns on the inner side and the outer side of the workshop and between every two middle columns in a clamped mode; and then the curtain wall is pushed, under the linkage movement of the curtain wall, the curtain wall is gradually arranged in a horizontal straight line, the angle brace column, the middle column and the curtain wall can be installed at the same time, the construction steps are reduced, and the overall construction speed is increased.

This utility model relates to the field of prestressed engineering technology, specifically disclosing a prestressed strand threading traction head for prestressed construction. It includes a traction bolt connected to the steel strand and having multiple sets of mounting holes along the axial direction; a bearing seat fitted on the outside of the traction bolt and connected to it; a rotating component mounted on the bearing seat and rotatably engaged with it; and a rotating lug connected to the rotating component. One end of the rotating component passes through the bearing seat, while the other end, away from the traction bolt, is connected to the rotating lug. This utility model effectively improves construction efficiency, avoids excessively long threading times, and prevents the steel strand from rotating and tangling due to torque transmission caused by the rotation of the traction rope itself during threading, thus improving construction quality and reducing safety hazards.

The utility model relates to a self-impact type heliostat prestressed pipe pile, which belongs to the technical field of heliostats and comprises a pile body, an upper end plate, a lower end plate and a pile tip. The upper end plate and the lower end plate are installed at the upper end and the lower end of the pile body correspondingly. The pile body is a hollow concrete pipe pile; the lower end of the lower end plate is coaxially connected with the pile tip; the pile tip is a closed pointed-end metal pile tip, and the angle of a sharp angle at the lower end of the pile tip is 5-30 degrees. The prestressed pipe pile can be easily installed on the ground, damage to the prestressed pipe pile is reduced, the construction steps of hole forming in advance and concrete grouting material pouring are omitted, cost input is reduced, the construction period is greatly shortened, and limitation of construction in winter is avoided.

The present invention discloses an assembled bedside background wall installation design structure, including several facing layers, and a plurality of cassette main keels are arranged on the back of the facing layer, and the cassette main keels are fixed to the building wall by screws. The present invention directly fixes the facing layer to the building wall by the cassette main keels, and does not need to use a wooden model base layer, and the facing layer does not need to be dimensioned by the base layer model. It can be directly mass-produced according to the design drawings, and the facing layer can be directly installed after being transported to the construction site. The installation operation of the bedside background wall is screwing and laying of metal skirtings. The assembled installation is simple, convenient and fast to operate, and the complex construction steps and construction operations are reduced. The installation process is simple and fast, which is conducive to improving the on-site construction speed, accelerating the construction progress, and improving the construction efficiency.

The utility model relates to the technical field of wall decoration, and provides a closely-spliced arc closing-up component and a lamp strip background wall structure, the closely-spliced arc closing-up component is used for closing up the edge of a wall plate and the edge of background wall paper, and the closely-spliced arc closing-up component comprises an arc closing-up part which protrudes towards one side far away from the wall plate; the clamping part is arranged at one end of the arc closing part and is used for being clamped with a bayonet in the side surface of the wallboard; the connecting and fixing part is arranged on the inner wall of the arc closing-in part and used for being connected with a keel piece, and an avoiding space is formed between the connecting and fixing part and the inner wall face of the arc closing-in part and used for avoiding the edge of the keel piece; and the wallpaper closing-up part is arranged at the other end of the arc closing-up part and used for covering the front surface of the edge of the background wallpaper. The stainless steel bending piece solves the problems that in the prior art, a stainless steel bending piece is poor in sealing effect, high in machining difficulty, labor-consuming, time-consuming and high in manufacturing cost.

An adjustable anti-seismic support positioning plate mounting structure comprises a lower buttress reinforcement cage, a positioning threaded sleeve, an adjusting screw and a positioning plate. The positioning thread bushing is vertically and fixedly mounted on the top surface of the lower buttress reinforcement cage; the adjusting screw is arranged on the positioning thread bushing; the positioning plate is horizontally arranged above the top face of the reinforcement cage through supporting of the adjusting screws. The construction method has the beneficial effects that the construction process is simple, construction operations such as repeated polishing are not needed, the construction steps are optimized, the construction procedures are reduced, the construction cost is reduced, the construction efficiency is improved, and waste of construction materials and economic losses caused by reworking are avoided; the supporting elevation can be accurately adjusted through the adjusting screws, the flatness and the construction elevation of the positioning plate are guaranteed, and therefore the installation quality of the anti-seismic support is guaranteed, and the construction quality is guaranteed through the construction process.

The present invention relates to a pipeline wall penetration device for thermal insulation structure integration and its manufacturing and construction process. The pipeline wall penetration device structure for thermal insulation structure integration includes a main line, a first ring rib is arranged at the front end of the main line, a sleeve is sleeved at the front end of the main line, the front end of the sleeve is connected to the first ring rib, a second ring rib is arranged on the outer wall of the main line, the position of the second ring rib corresponds to the rear end of the sleeve, a movable buckle cover for sealing the rear port of the sleeve is arranged between the second ring rib and the rear end of the sleeve, and a detachable plugging cover is arranged at the front and rear ends of the main line pipe. The present invention has good air tightness, no thermal bridge, convenient construction, low cost, no need for on-site secondary treatment, and can effectively solve the problems of protective layer leakage caused by the need to open a hole in the construction of the thermal insulation integrated structure of the ultra-low energy consumption building for the traditional embedded pipe, unqualified air tightness, high difficulty in secondary construction, high construction cost, etc., and has obvious economic and social benefits.

The utility model relates to the technical field of bridge maintenance equipment, and discloses a jacking device for road and bridge maintenance, which comprises a hydraulic jack, the outer side wall of the hydraulic jack is fixedly connected with a first middle plate, and one end of a first connecting rod is hinged on the first middle plate; the second middle plate is fixedly connected to the movable end of the hydraulic jack, and the side wall of the second middle plate is rotationally connected with the middle of a middle connecting rod; one end of a second connecting rod is hinged to the top plate, the other end of the first connecting rod and the other end of the second connecting rod are rotationally connected with the two ends of the middle connecting rod correspondingly, and the first connecting rod, the middle connecting rod and the second connecting rod are integrally arranged in a Z shape; the limiting rod is in sliding connection with at least one of the second middle plate and the first middle plate in the vertical direction. On the basis that an existing bridge structure is not damaged, the lifting stroke of the jacking device is improved.

This utility model discloses a non-removable stone wall connection mechanism, relating to the field of building construction technology. It includes a pouring section, inner wall components, outer wall components, and connectors: the inner wall components are installed on one side of the pouring section; the outer wall components are installed on the other side of the pouring section; the number of connectors is several sets; wherein, the inner wall components, outer wall components, and pouring section are limited by connectors; the outer wall components include an insulation layer and an outer wall template, the insulation layer and the outer wall template are fixedly connected, the outer wall template is made of natural stone, the insulation layer is composed of several sets of insulation boards, and the inner wall components are composed of several sets of inner wall panels; this non-removable stone wall connection mechanism uses connectors to limit the positioning of the inner and outer wall components, forming a complete frame. The modular structure allows for arbitrary disassembly and assembly of each part, enabling separate transport. This results in a small volume during transport, convenient transportation, and promising application prospects.

The utility model discloses an adjustable stacked type circumferential elevator shaft operation platform, and belongs to the field of elevator shafts. The adjustable stacked circumferential elevator shaft operation platform comprises a construction platform, an operation frame body is arranged above the construction platform, a ladder stand is arranged in the operation frame body, an operation frame body construction platform is arranged at the top of the operation frame body, and an upper manhole and an upper manhole cover plate are formed in the operation frame body construction platform; a plurality of groups of operation frame bodies can be stacked above one group of operation frame bodies; a fixing device is arranged between every two adjacent operation frame bodies. A supporting frame is arranged below the construction platform, a tripod is arranged below the supporting frame, a telescopic device is arranged at the joint of the tripod and the supporting frame, and the telescopic device is used for adjusting the height of the supporting frame and the height of the tripod to be matched with the interlayer height. According to the adjustable stacked type circumferential elevator shaft operation platform, the technical problems that in the existing construction technology, time consumed for interlayer conversion is long, and the process of assembling a large number of scaffolds is complex can be solved.

The utility model relates to the technical field of road construction, and discloses a curb concrete abutment back pouring forming device which comprises a backrest machine body, connecting pipes are connected to the two ends of the backrest machine body, connecting columns are movably connected to the interiors of the two connecting pipes, baffles are connected to the lower ends of the two connecting columns, and the baffles are movably connected to the interiors of the two connecting pipes. A shaping plate is arranged at the front end and / or the rear end of the baffle and is in an L shape, connecting grooves are formed in the front end face and the rear end face of the baffle correspondingly, connecting blocks are fixedly connected to the positions, corresponding to the connecting grooves, of the wall face of the side, close to the baffle, of the shaping plate, and the connecting blocks are movably clamped into the corresponding connecting grooves; and two connecting holes are formed in the positions, corresponding to the two connecting grooves, of the upper wall face of the baffle, and limiting and fixing mechanisms are arranged in the two connecting holes. According to the utility model, the L-shaped shaping plate is arranged, so that the abutment back at the corner of the road can be cast and formed at one time, and the traditional tedious operation of respectively casting two sides of the corner is avoided.

The invention discloses a reinforcing process based on an ECC material, a reinforcing structure and a building, and belongs to the technical field of building reinforcing, the reinforcing process comprises the following steps: after the surface of a to-be-reinforced building is subjected to pretreatment, a first layer of ECC material is sprayed, and a first ECC concrete layer is formed; the ECC material at least comprises expanded and vitrified microbeads as fine aggregate; paving fiber gridding cloth on the surface of the first ECC concrete layer, and uniformly pressing the fiber gridding cloth into the surface layer of the first ECC concrete layer; the surface of the fiber gridding cloth is hammered to the designated depth through shear-resistant studs with rubber gaskets, and the shear-resistant studs penetrate through the first ECC concrete layer to enter the building to be reinforced; and a second layer of ECC material continues to be sprayed, a second ECC concrete layer is formed, and plastering treatment is conducted. The heat preservation and energy saving effects can be improved, the construction steps are reduced, the construction cost is reduced, and good economic benefits are achieved.

The utility model discloses a prefabricated beam reinforcing steel bar processing and mounting standardization jig frame which comprises a bottom web reinforcing steel bar jig frame used for binding and erecting bottom web reinforcing steel bars and a top plate reinforcing steel bar jig frame used for binding and erecting top plate reinforcing steel bars. The bottom web steel bar jig frame comprises transverse supporting mechanisms A and longitudinal supporting mechanisms A, the transverse supporting mechanisms A are equidistantly distributed in the longitudinal direction, and every two adjacent transverse supporting mechanisms A are fixedly connected through the corresponding longitudinal supporting mechanism A. The bottom web steel bar jig frame and the top plate steel bar jig frame are used in cooperation, the bottom web steel bar jig frame is of a fixed structure, bottom web stirrups are fixed through the positioning mechanism A, the percent of pass of a concrete protection layer can be well guaranteed, and the steel bar jig frame can be applied and popularized in large-range small box girder prefabricating construction; and meanwhile, the construction step that the web jig frame slides to the two sides of the bottom plate jig frame is omitted, the construction efficiency of the prefabricated small box girder can be improved, and therefore it can be guaranteed that steel bars are accurately positioned while the work efficiency is improved.

The present invention discloses a pre-tensioned ultra-high performance concrete composite beam and a construction method thereof, comprising a compression zone located at the upper part of the composite beam and a tension zone located at the lower part of the composite beam. The tension zone is made of ultra-high performance concrete, and a plurality of mutually parallel prestressed strands are arranged inside by the pre-tensioning method; the force direction of each prestressed strand is parallel to the tensile force direction borne by the tension zone; the compression zone is made of ordinary concrete, and is fixed to the tension zone by reserved steel bars arranged in the tension zone. During construction, the prestressed strands in the tension zone are tensioned first, and the tension zone is cast with ultra-high performance concrete. After the strength of the tension zone reaches the design strength, the compression zone is cast with ordinary concrete on the tension zone. The present invention makes full use of the high compressive strength of ultra-high performance concrete, avoids the defect of loose grouting of post-tensioning pipes, reduces the size of the component, and realizes the lightweight of ultra-high performance concrete components.