190 results about "Corbel" patented technology

The invention discloses a digital manufacturing method and system for a bracket node in a steel structure column, and relates to the related field of digital manufacturing of building components, and the method comprises the steps: collecting three-dimensional point cloud data of a bracket node connection region in a target steel structure column; stress concentration analysis is conducted in the vertical direction and the horizontal direction, and a key welding point set and a bolt hole site set are marked; lightweight design parameters of the bracket supporting structure are introduced, load stability analysis is conducted, and first assembly parameters are configured; traversing M bracket nodes in the target steel structure column to obtain a first assembly parameter to an Mth assembly parameter, and configuring a digital manufacturing instruction sequence in combination with the three-dimensional point cloud data; and inputting the data into a numerical control machining center, and driving multi-axis linkage equipment to manufacture and manage the bracket node. The technical problems that existing bracket joint manufacturing is low in efficiency and insufficient in precision and stability are solved, and the technical effects that the manufacturing efficiency is improved, the manufacturing precision and stability are improved, and powerful support is provided for energy-saving building material production are achieved.

The invention relates to the technical field of connecting joints in common building structures, in particular to a fabricated beam-column joint of a frame structure and a construction method of the fabricated beam-column joint. By means of the prefabricated concrete stand column, the bracket and the steel column sleeve which are integrally formed through pouring, the overall structural strength of the prefabricated concrete stand column, the bracket and the steel column sleeve is improved, and a structural supporting foundation is provided for later installation of the prefabricated concrete cross beam; beam limiting columns arranged at the front ends of the prefabricated concrete cross beams are clamped with beam limiting blind holes formed in the steel column sleeves and the brackets, so that connection and fixation between the beam columns are achieved; meanwhile, the front ends of the four prefabricated concrete cross beams are clamped with one another, so that the four prefabricated concrete cross beams are locked with one another; connection and fixation of the assembly type beam columns can be achieved without opening holes and arranging bolts in the areas where the prefabricated concrete stand columns and the cross beam bodies are located, and the beam columns at the connecting positions are not prone to damage.

The utility model relates to the technical field of constructional engineering foundations, and discloses a detachable arc-shaped bracket deviation rectifying support device for open caisson construction, which comprises a left-area detachable supporting piece, a right-area detachable supporting piece, a middle-area anchoring piece, a rubber pad, a weighing sensor, a strain sensor, a limiting hole and a balancing weight. Wherein the left-area detachable supporting piece and the right-area detachable supporting piece are vertically inserted and assembled in an open caisson limiting hole through the middle-area anchoring piece, rubber pads are pasted on the contact faces of the left-area supporting piece and the right-area supporting piece and the inner side wall of an open caisson to prevent structural damage, and the top faces of the left-area supporting piece and the right-area supporting piece are each provided with a weighing sensor. A strain sensor is installed on the external slope of the left area supporting piece. The open caisson deviation rectifying support has the advantages of being convenient to disassemble and assemble, high in safety and the like, and the use efficiency of the open caisson deviation rectifying support can be effectively improved.

A corbel mounting assembly can include a corbel mounting member having a concrete anchor arrangement and a planar corbel mounting surface. The planar corbel mounting surface can extend along a mounting plane. A beam securement member is also included, having a concrete anchor arrangement and a planar beam securement surface. The beam securement member can be rigidly secured to and spaced apart from the corbel mounting member by a connecting member. The planar corbel mounting surface and the planar beam securement surface can be aligned with each other along the mounting plane. The connecting member can have a connecting member surface extending along a connecting member surface plane that is spaced apart from and parallel to the mounting plane. The connecting member can extend interactively relative to the concrete anchor arrangements of the corbel mounting member and the beam securement member.

The invention relates to the technical field of tunnels, and provides a tunnel portal section structure suitable for steep terrains and a construction method thereof.A steep rock-soil body is vertically excavated through an upward slope step by step, a soil nailing wall is adopted to support the upward slope while the upward slope is excavated from top to bottom, a box culvert main body, a stand column assembly and a joist assembly are constructed, and the tunnel portal section structure suitable for the steep terrains is constructed. And constructing portal walls and cover arches on the two sides of the tunnel by using the constructed adjacent span bridge, the box culvert main body and the joist assembly as a construction platform, constructing a pipe shed on the basis of the cover arches, backfilling in the second backfilling space to form a second backfilling layer, constructing a shed tunnel assembly, constructing a tunnel hidden hole, and completing the construction of the tunnel portal section structure. According to the double-layer frame structure, the foundation of an upper shed tunnel assembly can be provided, a channel is provided for an existing low-grade road on the lower portion, the double-layer frame structure is used for an adjacent bridge and a bridge abutment, meanwhile, the upper portion of the box culvert is backfilled to the top face of the joist, a construction platform can be provided for tunnel entering, the lateral soil pressure of a mountain can be resisted, and the construction safety is high.

The invention belongs to the technical field of support beam steel corbel construction, and discloses a steel corbel structure for a support beam, the steel corbel structure comprises an upper column root, the side surface of the upper column root is parallelly provided with a widening assembly; the widening assembly comprises a side root with the same size as the upper column root, and a steel corbel replaceable assembly is arranged on the front side of the upper column root and the front side of the side root in parallel. The replaceable steel corbel structure in the steel corbel replaceable assembly is matched with a side-by-side structure to increase the contact area of the support, improve the stability effect of the positioning support and reduce dynamic load action cracks, the cracks can be rapidly replaced, potential safety hazards caused by the cracks are avoided, and meanwhile, the production efficiency is improved. The steel corbels are assembled into a whole through different connecting modes of welding and bolting, the structure is stable, the flexibility performance in the installation process is far better than that of a traditional welded steel corbel structure, and the steel corbels can be adjusted to achieve a better supporting effect when facing different complex environments.

The invention relates to the technical field of bridge construction, in particular to a bridge pier embedded right-angle bracket support design method and system.The method comprises the steps that geological parameters of a bridge construction area are obtained, and the geological parameters are mapped into load reduction coefficients of bridge pier sites; calculating the design load of the right-angle bracket, synchronously generating a parameterized model of the Bailey buckle, and outputting an initial bracket model of the integrated buckle structure; collaborative optimization of a pier column main reinforcement passing path and a Bailey ring buckle space is carried out on the initial bracket model, and an optimized bracket model with a perforated structure is obtained; performing multi-parameter iterative simulation analysis on the optimized bracket model to obtain a plurality of candidate design schemes; and performing multi-target evaluation on the plurality of candidate design schemes to obtain an optimal design scheme. By means of the method, the problems that in the prior art, geological conditions are difficult to quantify, load calculation lacks dynamic correction, and the space of the bracket and the space of the Bailey ring buckle support are difficult to cooperate are effectively solved, and structural stress optimization and construction arrangement integrated design is achieved.

The utility model relates to a triangular temporary backrest structure in a basement under construction, which is positioned on a bottom plate constructed underground and comprises a bracket, a vertical support, a transverse support and an inclined support, the vertical support and the transverse support are located on the same plane and are perpendicular to a line of a jacking pipe in the jacking pipe starting equipment. A gap is formed between the transverse support and the bottom plate; the inclined strut is provided with a first end and a second end, and the first end of the inclined strut is arranged at the intersection of the vertical support and the transverse support; the second end of the inclined strut is arranged on the bottom plate through the bracket; and the vertical support stands on the bottom plate. The pipe jacking device can meet the pipe jacking construction process requirement, the requirement for a construction site is small, and resource cost is saved.

The application discloses a cantilever type side wall self-stabilizing system applied to deep foundation pit support and a construction method thereof, which comprises two water-stopping curtains, support piles, concrete slope protection, a plurality of soil nails arranged in the concrete slope protection, a corbel arranged at the top of the support piles, and a wet lean concrete layer arranged at the inner side of the support piles, further comprises a box culvert of a lower passageway, a plurality of rows of additional support steels arranged at intervals are arranged in the structural steel of the box culvert of the lower passageway, and the box culvert of the lower passageway comprises a lower passageway bottom plate, a lower passageway top plate and two lower passageway side walls; one end of the additional support steel is inserted into the lower passageway side wall, the other end of the additional support steel is arranged through the vertical side wall section of the lower passageway bottom plate, and is bent and inserted into the horizontal bottom wall section of the lower passageway bottom plate, so as to ensure the bending bearing capacity of the lower passageway bottom plate; thus, the existing technology of the inverted support structure can be replaced, the pressure of the side wall panel is smaller, the rigidity and the anti-seismic capacity of the overall structure are improved, and the construction period can be obviously shortened.

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.

1. The name of the design product: veranda frame. 2. The use of the design product: as a decorative building for workers to cool off and for vines to climb. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

1. Name of the design product: decorative column with corbel bracket. 2. Use of the design product: used as architectural decorative column. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: front view.

This invention relates to a method for the construction of ultra-deep diaphragm walls in highly permeable strata with fully automated monitoring throughout the entire process. Addressing the problems of low construction accuracy, easy collapse, and lack of real-time monitoring in ultra-deep diaphragm wall construction in highly permeable strata, this invention solves these problems through a collaborative approach of five technical systems: (1) a sealing wall technology system employing a hanging beam, a reserved post-pouring strip, and an inverted corbel structure to enhance impermeability; (2) a detachable steel cage support system using modular truss support to improve rigidity and hoisting safety; (3) a verticality ultrasonic detection system utilizing ultrasonic signals to achieve high-precision detection of the guide wall; (4) a steel-framed inner support system using adjustable supports to prevent cracking of the guide wall; and (5) an automated monitoring system integrating multiple sensors to monitor displacement and temperature in real time and providing cloud-based early warning. This invention, through the integration of multiple technologies, significantly improves construction efficiency and quality, is suitable for ultra-deep diaphragm wall construction under complex geological conditions, and has advantages such as strong impermeability, controllable deformation, and real-time early warning.

The utility model discloses a hinged connection structure of a precast beam and a precast column, which comprises a column body and a floor beam, a bracket is arranged on the column body, and one end of the floor beam is arranged on the bracket; the beam bottom is in welded connection with the bracket top embedded part and the beam bottom embedded part through a base plate; the column body is connected with the floor beam through a connecting piece; the connecting piece comprises a sleeve embedded in the floor beam, a bolt arranged in the sleeve and an angle steel plate arranged on the side wall of the floor beam, a long round hole is formed in the angle steel plate, the exposed head end of the bolt is limited in the long round hole in a matched sliding mode through a base plate, and the side end of the angle steel plate is connected with an embedded piece on the upper side portion of the column body. The connecting piece structure is additionally arranged at the connecting position of the floor beam and the column, the long round hole in the connecting piece is matched with sliding limiting connection of the bolt preset at the beam end, horizontal constraint and vertical constraint of the upper portion of the beam end are released, bending moment cannot be generated at the beam end, and therefore beam-column hinging is achieved.

This invention relates to the field of building construction, specifically disclosing an automatic installation mechanism for formwork components used in the construction of corbel linings. The mechanism includes a first lining formwork that adheres to the upper side of the corbel structure and the lining sidewall, and a second lining formwork that adheres to the vertical side and lower side of the corbel structure and the lining sidewall. It also includes a first control unit for controlling the vertical or horizontal movement of the first lining formwork and a second control unit for controlling the vertical or horizontal movement of the second lining formwork. A hinge unit is provided between the first lining formwork and the second lining formwork on the side closest to the second lining formwork. Both the first and second control units are connected to a hydraulic control system controlled by a hydraulic trolley. This solution automates the movement of the first and second lining formwork through the aforementioned first and second control units and hydraulic control system, eliminating the need for manual installation of the first and second lining formwork sequentially onto the corbel structure, making construction more convenient and efficient.

The invention discloses a continuous beam bridge cast-in-place section corbel bracket hoisting and accurate alignment construction method, which belongs to the technical field of corbel bracket construction, and comprises the following steps: S1, bracket structure design: adopting a triangular bracket as a load-bearing system, selecting double-spliced channel steel as a bracket diagonal rod, selecting double-spliced channel steel as a longitudinal rod, and pre-embedding and connecting with a pier body through a climbing cone; according to the method, a triangular bracket bearing system is adopted, the inclined rods and the longitudinal rods are both made of double-spliced channel steel, climbing cones are accurately pre-buried through a positioning plate with the thickness of 16 mm, reliable connection of the bracket and a pier body is achieved, and the risk that a traditional support is not firm in anchoring is avoided; meanwhile, when the bracket is machined in a factory, the splicing welding seam quality is strictly detected, the attachment degree of connecting nodes is checked through on-site pre-assembly, stage-by-stage pre-pressing is carried out, stability is judged when the final two-time settlement difference is smaller than or equal to 2 mm, the bearing capacity of the bracket can be effectively verified, inelastic deformation is eliminated, and construction safety is guaranteed in the whole process from structural design, machining and installation to load inspection; and hidden dangers of deviation, instability and the like of the frame body are reduced.

The utility model discloses a heightening structure for a frame column formwork of a frame-bent plant. A constructed frame column section and a concrete structure bracket are adopted for bottom reinforcement and constraint; the heightening formwork structure comprises a full framing, #-shaped lattice embracing columns and heightening formworks. A connecting column section is arranged at the top of the concrete structure bracket; the full framing is erected around the constructed frame column section, and the top of the full framing exceeds the to-be-constructed frame column section; the heightening formwork is arranged on the side wall of the periphery of the frame column section to be constructed, the lower end of the heightening formwork is supported on the top of the concrete structure bracket, and the lower portion of the heightening formwork is attached to the outer surface of the connecting column section; the #-shaped lattice embracing columns are hooped on the heightening formworks, and the #-shaped lattice embracing columns are connected with the surrounding full framing; and a vertical diagonal bridging is arranged on the full framing for reinforcement. According to the utility model, the technical problem that a conventional support template cannot be carried out when the upper structure is constructed when the column is poured in sections in the traditional frame is solved.

The invention discloses a connecting joint of a modular stack box building. The connecting joint comprises an upper corner fitting box, a lower corner fitting box, a main joint plate, a connecting end plate, an upper shear-resistant piece, a lower shear-resistant piece, an upper pin shaft and a lower pin shaft. The upper corner fitting box is arranged above the main gusset plate, the lower corner fitting box is arranged below the main gusset plate, an upper bracket is welded to the outer side face of the upper corner fitting box, a lower bracket is welded to the outer side face of the lower corner fitting box, and the connecting end plate is welded to the upper bracket and the lower bracket so as to connect the upper corner fitting box and the lower corner fitting box; the upper anti-shearing piece is fixedly arranged on the upper end face of the main gusset plate and located in the upper corner fitting box, and the upper pin shaft is connected with the upper anti-shearing piece and the upper corner fitting box; the lower anti-shearing piece is fixedly arranged on the lower end face of the main gusset plate and located in the lower corner fitting box, and the lower pin shaft is connected with the lower anti-shearing piece and the lower corner fitting box. The shear resistance, the pulling resistance, the bending bearing capacity and the seismic ductility of a joint area can be enhanced, and disassembly is easy.

The application discloses an assembled corridor, comprising upper chord bars, lower chord bars and inclined web bars; an assembled corridor end connecting structure, comprising a corridor, a corbel and a pre-buried part, the upper side of the end of the corridor is connected with a fourth connecting piece, the fourth connecting piece is connected with a main building frame column through a cable assembly; the third connecting piece on the lower side of the end of the corridor is fixed on the top of the corbel through the pre-buried part, and the corbel is fixed on the side of the main building frame column; the lower side and the upper side of the end of the corridor are connected through a support web bar. The application further provides a corridor construction method. The application has the advantages that the corridor is connected by steel components, has high assembly degree and is simple to construct; fasteners are used to connect the components, the node construction process is simple, and the construction quality can be guaranteed; and the cable assembly is designed for anti-falling.

The invention discloses a socket type spiral stair assembling system and an assembling method thereof.The assembling system comprises two steel corbels which are arranged in the length direction of a structural beam in a spaced mode and connected to the structural beam; the platform plate is arranged in the horizontal direction, and the platform plate is located between the two steel corbels; the two spiral boundary beams are vertically and spirally arranged, the bottom ends of the two spiral boundary beams are connected to the ground, horizontal sections are formed at the top ends of the two spiral boundary beams respectively and connected to the two steel corbels, and the two horizontal sections jointly surround the periphery of the platform plate and are connected with the platform plate; and the multiple stepping units are spliced end to end in the spiral direction of the spiral boundary beam and connected between the two spiral sections, the stepping unit at the topmost end is spliced with the platform plate, and the construction efficiency is improved by arranging the splicing system.

The utility model relates to a formwork support used on a cast-in-place canal bracket inclined plane, which comprises a panel and a support frame, the panel is obliquely arranged according to the design angle of the bracket inclined plane, the support frame is positioned below a bracket, the lower part of the support frame is placed on the ground, a part of the upper part of the support frame is supported below the top plane of the bracket, and the upper part of the support frame is fixedly connected with the panel. A plurality of adjustable jacking units are arranged on the other part of the upper portion of the supporting frame, the adjustable jacking units are distributed at equal intervals along the inclination angle of the panel, panel abutting units are placed on the adjustable jacking units, and the panel abutting units are fixedly attached to the panel; the adjustable jacking unit is arranged on the supporting frame, and the panel abutting unit is placed on the supporting frame, so that it is guaranteed that the panel abutting unit can sufficiently support the inclined face of the bracket, a triangular wooden box does not need to be customized, construction time and labor consumption are greatly reduced, construction cost is saved, meanwhile, the bearing capacity of the formwork supporting frame is improved, and the construction efficiency is improved. The method has the advantages of being convenient to construct, convenient to mount and dismount and high in standardization degree.

The application relates to the technical field of building structures, in particular to a sliding damping connecting joint of a fabricated steel-concrete slab-column combined structure, which comprises a prefabricated column, a ring-shaped corbel and a prefabricated floor slab; the ring-shaped corbel is fixedly sleeved on the prefabricated column; the prefabricated floor slab is provided with a prefabricated installation opening; the prefabricated floor slab is sleeved on the prefabricated column through the prefabricated installation opening; and the lower end of the prefabricated installation opening is overlapped on the ring-shaped corbel. The application solves the problem of insufficient seismic performance of a traditional slab-column connecting joint, avoids brittle failure of a joint area under the action of an earthquake due to insufficient ductility, and has the advantages of simple process, short construction period, small influence of environment and season on construction progress and quality.

This invention relates to a detachable corbel connection node, comprising a steel column body, a surrounding plate connection mechanism, and corbel components. The surrounding plate connection mechanism is installed around the four sides of the steel column body and includes a support plate with a notch on the connection surface between the steel column body and the corbel component. A corbel end plate is provided in the center of the corbel component, and a protrusion on the end plate matches the notch. The protrusion of the corbel component engages with the notch of the steel column body, and the corbel component and the surrounding plate connection mechanism are connected by bolts. This invention achieves a reliable corbel connection and is easy to disassemble.

The utility model discloses a device for synchronously lifting and transversely moving a steel corbel and a large-span steel ceiling, and belongs to the technical field of steel structure construction. The device comprises a first bracket lifting lug, a second bracket lifting lug, a first steel ceiling lifting lug, a second steel ceiling lifting lug, a building structure lifting lug and three sets of lifting devices. The second steel ceiling lifting lug and the first steel ceiling lifting lug are fixed to the two sides, close to and away from the building structure, of the steel ceiling ring beam respectively. The first bracket lifting lug and the second bracket lifting lug are fixed to web plates on the two sides, away from and close to the building structure, of the steel bracket correspondingly. And lifting devices are arranged between the first bracket lifting lug and the first steel ceiling lifting lug, between the second bracket lifting lug and the second steel ceiling lifting lug and between the second bracket lifting lug and the building structure lifting lug. The lower portion of the steel ceiling ring beam is further provided with a clamping plate used for clamping the upper flange of the lower steel corbel. The device is used for synchronous lifting and transverse moving construction of the steel corbel and the large-span steel ceiling, is safer and more reliable, and improves the construction efficiency.

According to the construction method for jacking and descending the existing building into the ground to reduce the building height, engineering piles and an operation space are dug out, detachable steel corbels are installed on the engineering piles, upside-down jacks are installed on pile bearing platforms, after all the engineering piles are cut off, the engineering piles on the lower portion of the cut-off face are pressed downwards one by one, and after all the engineering piles are pressed to the designed elevation, the engineering piles are lifted and lowered to the ground. A group control synchronous control system is adopted for synchronously controlling the jacks to contract slowly, then the upper building slowly and uniformly descends downwards, and the top of the upper building can be descended to the designed elevation through repeated operation. According to the construction method, the problems of high dismantling operation surface, high operation difficulty, high operation risk and the like of the upper floor of the existing building are solved, and the novel existing building jacking and descending construction method is wide in application prospect.

The utility model discloses a wall-mounted cable bridge, which relates to the technical field of cable bridges and comprises a bridge, a positioning component and a plurality of fixing plates. The periphery of the fixing plate is provided with first screws connected with a wall. Supporting arms are integrally formed on the front sides of the fixing plates, the bridge is placed on the supporting arms, and second screws connected with the supporting arms are arranged on the bridge. After one supporting arm is installed, the transverse rod is fixed to the side rod at the right end of the supporting arm on the left side through the fixing assembly, then the scale rod is pulled rightwards and stopped after reaching the needed distance, at the moment, the scale rod is fixed by the left hand, a new supporting arm is taken by the right hand, the side rod at the left end of the new supporting arm is inserted into the sleeve, and then the new supporting arm can be positioned; the distance between the new corbel and the installed corbel meets the requirement, and the new corbel is in a horizontal state, so that the new corbel can be positioned, by adopting the mode, other corbels can be horizontally installed at equal intervals, and the installation efficiency of the wall-mounted bridge is improved.

The utility model relates to the technical field of corridor supports, in particular to an anti-seismic corridor structure which comprises a concrete bracket and a corridor steel beam, an anti-seismic supporting assembly is arranged between the bracket and the steel beam, the anti-seismic supporting assembly comprises a pre-buried plate pre-buried in a groove in the bracket, a fixing cylinder is arranged on the pre-buried plate, and the fixing cylinder is fixedly connected with the concrete bracket. And a sliding seat is arranged on the fixing cylinder in a sliding mode, the sliding seat is detachably connected with the lower side of the steel beam, and the sliding seat slides on the fixing cylinder so as to reduce the influence of the steel beam on the bracket. According to the earthquake-proof supporting assembly, when an earthquake occurs, towers drive concrete corbels to vibrate, the corbels vibrate to drive fixing cylinders to vibrate through embedded plates, the fixing cylinders vibrate to enable the fixing cylinders to generate relative displacement with sliding seats, and no matter the two towers connected through the corridor vibrate in the same direction or in the opposite direction, the sliding seats still keep supporting a steel beam; and the influence of the corridor on the structural rigidity of the tower due to vibration of the tower during an earthquake is weakened.

The invention discloses a semi-prefabricated rail top air duct arrangement method which comprises the following steps that (1) during construction of a station middle plate, lower suspended beams are arranged on the two sides of a preset rail top exhaust duct position correspondingly, the lower suspended beams and the station middle plate are integrally formed in a pouring mode, and the lower suspended beam close to one side of a top longitudinal beam is tightly attached to the top longitudinal beam; (2) a prefabricated air duct bottom plate is inserted between the lower suspended beams and erected on bracket structures on the opposite side faces of the lower suspended beams, and gaps are formed between the two sides of the prefabricated air duct bottom plate and the lower suspended beams correspondingly; 3, after the gap between the lower suspended beam and the prefabricated air duct bottom plate is filled with P42.5 cement mortar, cement mortar with the gradient being 1% is arranged on the prefabricated air duct bottom plate to find a slope surface. According to the method, construction of the air duct can be directly completed during construction of the station middle plate, the construction period is effectively shortened, the construction efficiency is improved, and the stress stability of the air duct structure is reliable.

The utility model discloses a connecting structure of a steel corbel and a concrete modularized building stair, which comprises a concrete building module, the steel corbel, a bent anchor steel bar and a prefabricated stair, an embedded part is embedded in the concrete building module, the embedded part comprises an embedded steel plate and an anchor bar, the embedded steel plate is fixed at the outer side end of the anchor bar, and the embedded steel plate is fixed at the outer side end of the anchor bar. The anchor bars are embedded in concrete of the concrete building module, and the outer side face of the embedded steel plate is exposed out of the inner side face of the wall of the concrete building module. The steel corbel comprises a connecting plate and a top plate, the bottom end of the bent anchor steel bar is provided with a bent section, and the bent section is welded to the top plate. Pin holes are reserved in the prefabricated stairs, the bent anchor steel bars are inserted into the pin holes, and high-strength grouting materials are filled between the bent anchor steel bars and the inner walls of the pin holes. The connecting structure can realize quick and convenient connection of the stairs, and improves the construction efficiency; and the integrality and the safety of the stair structure can be effectively improved.

The utility model relates to the field of bridge construction, in particular to a corbel bracket for supporting a steel beam cast-in-place bridge floor formwork, which comprises a cross beam, a vertical beam, an oblique beam and a detachable fixing piece, one end of the cross beam is vertically connected to the side face of the vertical beam, and a certain distance is kept between the cross beam and each of the two ends of the vertical beam; one end of the oblique beam is connected with the other end of the cross beam, and the other end of the oblique beam is connected with one end of the vertical beam; the ends, not connected with the oblique beams, of the vertical beams perpendicularly abut against a steel plate of a bridge floor formwork, and part of the cross beams abut against square timbers on the bottom face of the bridge floor formwork. The detachable fixing piece is arranged on the side, close to the steel plate, of the cross beam, and the cross beam is fixed to the steel plate. The corbel bracket can adapt to the supporting condition that the bottom face of the bridge floor formwork protrudes, and the supporting stability is high; and connecting parts are few, assembly and disassembly are efficient and convenient, and the construction cost is reduced.