76results about "Arched girders" patented technology

The invention discloses a rapid butt-joint positioning method for a hyperbolic arc-shaped steel beam, belongs to the technical field of steel structure building construction, and mainly aims to solve the problems of high butt-joint positioning difficulty, low precision, poor efficiency and high safety risk of the hyperbolic arc-shaped steel beam in high-altitude assembly installation. The temporary connecting plate with the spherical hinge joint and the annular positioning boss and the temporary connecting base with the spherical hinge nest and the annular positioning groove are welded to the end of the steel beam, a measuring instrument is used for obtaining the coordinate of the mark point and fitting deviation, and the steel beam is controlled to descend stably through synchronous hoisting, active swing restraining, adjustable supporting and a real-time monitoring system. And after preset position deviation and weight transfer rate threshold values are reached, the horizontal position is finely adjusted, so that the spherical hinge head sinks into the spherical hinge nest, the annular positioning boss is embedded into the annular positioning groove, and finally fastening is completed by adopting a conical centering pin rod and a bolt. By means of the method, high-precision, high-efficiency, safe and reliable butt joint of the hyperbolic arc-shaped steel beams is achieved.

The invention provides an exhibition hall roof adopting large-span folded-surface arch trusses and a construction method of the exhibition hall roof, a plurality of large-span folded-surface arch trusses are sequentially connected, and each group of supporting mechanisms are respectively arranged at two ends of each corresponding large-span folded-surface arch truss; the (n / 2 + 1) th truss and the (n / 2) th truss of adjacent large-span folded-surface arched trusses are connected through knuckle bearings, and the other two adjacent large-span folded-surface arched trusses are connected through connecting flanges; the large-span folded-surface arched truss comprises a main truss and two sets of wing trusses, and the two sets of wing trusses are hinged to the two opposite sides of the main truss respectively. The main truss is of an inverted triangular space truss structure; the wing truss is of a cantilever space structure. The exhibition hall roof is small in steel consumption in design, good in economic benefit, high in repeated utilization rate and high in industrial assembly degree.

The invention relates to a space curve prestress composite beam column and a design method thereof. The bottom of the space curve composite beam column is vertically upward, the tail end overhanging part is approximately horizontal, and the middle part is connected with the horizontal prestressed concrete closed beam to form a space structure. The horizontal closed prestressed beam and the space curve composite beam column support each other, the constraint boundary condition of the space curve composite beam column is changed, and the internal force distribution and magnitude of the space curve composite beam column are changed. According to the space curve composite beam column with the horizontal closed prestressed beam, the anti-cracking and anti-bending performance of a component is improved, and the deformation performance of the component is also improved. Therefore, the structure is particularly suitable for large cantilever structures with high deformation and bearing capacity.

The invention discloses a high-altitude large-span arc-shaped prestressed beam construction method, and particularly relates to the technical field of prestressed beam construction, which comprises the following steps: S1, carrying out dip angle monitoring modeling to generate a pre-arch coordinate; s2, scanning pipeline coordinates, comparing the pipeline coordinates with the BIM, and building a deviation matrix; s3, performing over-limit identification and segmented pouring planning; s4, curvature friction collection is carried out, and compensation tension is calculated; and S5, a final tensioning generation record is generated after the extension amount checking is completed. A tilt angle sensor is arranged to monitor deformation of a supporting system, a three-dimensional deformation model is constructed in combination with a wind load to generate pre-arch coordinates, a total station scans pipeline coordinates and compares the pipeline coordinates with a BIM theoretical value to establish an axial deviation matrix, an overrun section is recognized, pouring units are divided, the construction time sequence is optimized, and deformation accumulation is reduced. The curvature and friction coefficient of the pipeline are collected in real time to construct a friction compensation model, graded tension control is combined with extension threshold judgment, anchoring retraction is dynamically monitored to generate a final tension record, a closed-loop control system is formed, and the forming precision and stress stability of a large-curvature component are improved.

The invention discloses a double-layer three-center circular-arch-shaped subway station structure which comprises an arch-shaped top plate, two side walls connected with the two ends of the arch-shaped top plate respectively, a middle plate arranged between the two side walls and a bottom plate arranged at the bottoms of the two side walls, and the middle plate divides the subway station structure into an upper layer and a lower layer; the arch-shaped top plate is a three-centered circular arch-shaped top plate, two arches connected with the two side walls are tangent to the corresponding side walls respectively, and the rise span ratio of the arch-shaped top plate is 0.15-0.4. The problems that a rectangular subway station is poor in structural stability, low in space utilization rate, high in long-term maintenance cost and poor in attractiveness can be solved.

The utility model relates to the technical field of arc-shaped square steel, in particular to a detachable easy-to-install novel wear-resistant arc-shaped square steel device which comprises female arc-shaped square steel and male arc-shaped square steel, the female arc-shaped square steel is matched with the male arc-shaped square steel, a first bolt through hole is formed in the female arc-shaped square steel, a third bolt through hole is formed in the female arc-shaped square steel, and the male arc-shaped square steel is matched with the first bolt through hole. The integral arc-shaped square steel is split into the female arc-shaped square steel and the male arc-shaped square steel, the matched shape of the female arc-shaped square steel and the male arc-shaped square steel can achieve the effect of facilitating positioning, the problem that the arc-shaped position is prone to cracking due to stress concentration is solved by splitting the square steel into segments, the weight is also dispersed, hoisting and mounting are facilitated, and the service life of the square steel is prolonged. Compared with the prior art, the arc-shaped square steel has the advantages that the maintenance intensity is greatly reduced, the service life of the arc-shaped square steel is prolonged, the base plate and the body of the ore bin and the funnel can be effectively prevented from being worn through, the potential safety hazard is reduced, the maintenance labor intensity is reduced, and the efficient and stable operation of production is improved.

The composite connecting beam column structure comprises a reinforced concrete beam and a reinforced concrete column, the reinforced concrete beam is connected with the reinforced concrete column, the reinforced concrete beam comprises beam concrete, beam longitudinal bars, beam stirrups and anchoring parts, and the beam longitudinal bars comprise anchoring part longitudinal bars and non-anchoring part longitudinal bars; the anchor part longitudinal bars are fixedly connected with the anchoring parts; the reinforced concrete column comprises column concrete, column longitudinal bars and column stirrups, and the beam anchor longitudinal bars are inserted into gaps between the column longitudinal bars and the column stirrups; the beam anchor piece longitudinal bars are fixedly connected with the anchoring pieces. The utility model has the advantages of avoiding the fragile failure of anchoring in the column node area and improving the concrete pouring quality and strength.

The invention relates to a pouring construction method for a large-span spherical structure roof with crossed arc-shaped curved surface rib beams. The pouring construction method comprises the steps that firstly, the concrete mix proportion is determined; step 2, dividing a construction area and constructing by a skip method; thirdly, a formwork is installed and covered; 4, reinforcing steel bar binding and joint waterproofing are carried out; 5, layered pouring and curing of concrete are conducted; and sixthly, the fourth step and the fifth step are repeated, and pouring of the whole roof is completed. According to the method, the construction quality and efficiency are improved, and a new thought and method are provided for concrete pouring of the large-span complex structure roof.

The application discloses a kind of fusion wear and weave wood's large-span wood structure and erecting method, including load-bearing component, arch component, roof beam component, roof component, load-bearing component is equipped with two, two load-bearing component interval arrangement, arch component includes multiple arches, multiple arches are interval arrangement along the length direction of load-bearing component, the middle part of arch is upwardly convex into arch, two ends of arch are fixedly connected with load-bearing component, arch adopts the way of weave wood and is formed, roof beam component is fixedly arranged in the top of arch component, roof beam component adopts the way of wear and is formed, roof component is installed in the top of roof beam component and load-bearing component, the present application is by using the way of weave wood interlocking arch as core stress main body, to small type structure strip splicing formation large-span arch structure, without relying on large diameter long material, reduce material cost, the arch of arch component Stress system can realize large-span columnless indoor space, solve the problem of traditional lifting beam structure dense column, space partition is limited.

The application discloses a cross-rail tunnel arch support shear wall system, which comprises a wall support structure, an arch-shaped conversion structure and a damping structure. The wall support structure comprises frame support conversion columns and an upper shear wall. The two frame support conversion columns are oppositely arranged, and the upper shear wall is connected to the top ends of the two frame support conversion columns. The arch-shaped conversion structure comprises an arch-shaped support beam and an intermediate floor beam. The arch-shaped support beam is erected between the two frame support conversion columns, and the two ends of the arch-shaped support beam are connected to the two frame support conversion columns, respectively. The middle part of the arch-shaped support beam is arched upward to support the bottom of the upper shear wall. The intermediate floor beam is connected to the two ends of the arch-shaped support beam. The damping structure is arranged between the intermediate floor beam and the arch-shaped support beam to reduce vibration. According to the force characteristics of the arch-shaped support beam, the frame support conversion column, the damping member and the intermediate floor beam and other structures are combined to form a cooperative force system, the load capacity is high, and the reserved space of the lower structure is large.

The invention provides an installation method of a large-span steel roof, and relates to the field of building steel structures. The steel roof is divided into a plurality of areas to be lifted and installed, turnover of measure materials such as a jig frame and a lifting mechanism is achieved, and the problem that the one-time investment cost is high due to the fact that a large number of measure materials need to be consumed when a large-span steel roof is usually integrally lifted and installed is solved. Meanwhile, according to the method, the single trusses subjected to tailored welding are connected into a whole after being subjected to spatial position adjustment, and the problem that in the in-situ splicing process of the large-span steel roof, due to differential settlement of the trusses in different areas, the installation precision is low is solved; and moreover, the position of the lifted truss is adjusted in the air, so that the connecting precision between the partition structures of the large-span steel roof is ensured, and the problem that the overall mounting precision of the large-span steel roof is low is solved.

The application relates to the technical field of landscape bridges, and discloses a circular-rib arch bridge and an arch bridge construction method, which comprises arch bridge units, each of which comprises an arch bridge main frame and an arch ring assembly arranged above the arch bridge main frame; the arch bridge main frame comprises a first base, curved beam parts symmetrically arranged at two ends of the first base and cross beam parts, one end of each curved beam part is fixedly connected with the first base, the other end is connected with a cross beam part, a bridge deck is arranged between the two cross beam parts, and each cross beam part is provided with a second base for supporting the cross beam part at an end away from the curved beam part along a second direction; and the first base comprises two bearing platforms, and a main arch ring is arranged between the two bearing platforms; the arch ring assembly is symmetrically arranged at two ends of the main arch ring along a first direction, the arch ring assembly comprises a main circular arch and secondary circular arches arranged at two ends of the main circular arch along the first direction, the bottom end of the main circular arch is fixedly connected with the bearing platform, and one end of each secondary circular arch is hingedly connected with the main circular arch.

The invention discloses a space hyperbolic circular tube compression ring beam assembling jig frame and assembling method.The space hyperbolic circular tube compression ring beam assembling jig frame comprises a plurality of circular tube sections, all the circular tube sections are connected to form an annular frame body, and the space hyperbolic circular tube compression ring beam assembling jig frame comprises a jig frame base plate, the jig frame bodies are fixedly arranged on the upper surface of the jig frame base plate, the tops of the jig frame bodies are provided with positioning parts for positioning and supporting the circular pipe sections, and the number of the jig frame bodies is set according to the length of the circular pipe sections; the bottom of the base frame is fixed to the surface of the jig frame base plate through vertical steel bars, and the space positioning reference of the pin shaft plate is determined. The jig frame has the beneficial effects that the positions of the jig frame main body and the base frame can be rapidly determined according to the position of the projection of the annular frame body on the jig frame base plate, circular pipe sections are circularly pre-assembled in an end-to-end connection mode, pre-fixing and precise assembling of the circular pipe sections can be rapidly achieved, the assembling precision and efficiency of the annular frame body are improved, the manufacturing period is shortened, and the machining efficiency is improved.

The invention belongs to the technical field of connecting nodes, and particularly relates to an adjustable movable lifting point for a large-span arched corrugated steel plate, which comprises two groups of cross beams, the bottoms of the two groups of cross beams are fixedly connected with a plurality of groups of beam columns, so that the two groups of cross beams are in a same horizontal suspended state, the tops of the two groups of cross beams are clamped with cross beam clamping seats, and the tops of the cross beam clamping seats are fixedly connected with steel plate assemblies. The reinforcing beam rotates with the second shaft pin as the center so that the steel plate assembly, the storage beam assembly and the reinforcing beam can be switched to be in the lateral bending deformation resisting state in the hoisting process, and in the process, the traction assembly can be used for conducting traction positioning on the connecting position of the storage beam assembly and the reinforcing beam; the stability of the included angle position of the connecting position of the storage beam assembly and the reinforcing beam in the hoisting process is improved, and the resistance performance of the hoisted steel plate not affected by the environment is improved.

To provide a PCa joint member which has PCa members connected to each other via tendons in an unbonded state, capable of inhibiting or suppressing the breakage of the PCa members in a joint area due to the rust development of the tendons or the collision of the tendons with sheath pipes.SOLUTION: A PCa joint member 100 has PCa members 10, 20 including a plurality of precast-concrete sheath pipes 16, 26 joined to each other while allowing the communication of the corresponding sheath pipes 16, 26 therewith to form a communication sheath pipe 30. Tendons 17, 27 are inserted into all the communication sheath pipes 30, the tendons 17, 27 are strained in an unbonded state. and a rust-proofing material 50 is applied to a joint area A straddling a joint interface 80 between at least two PCa members 10, 20, out of the tendons 17, 27.SELECTED DRAWING: Figure 1

The utility model discloses a cross support type wind-resistant and shock-resistant double-layer steel structure factory building, which belongs to the field of steel structure factory buildings and is characterized in that a lower-layer support is mounted at the lower end of an arched support frame, and the lower-layer support, an upper-layer support and the arched support frame form a double-layer steel structure ceiling. By means of the structure, the wind resistance and shock resistance of the plant are remarkably improved, and a stable double-layer steel structure system is formed through cooperation of various supporting frames. External force can be effectively dispersed and absorbed, and a plant main body structure is protected. Load distribution is optimized through structural design, the number of the upper-layer supports is two times that of the lower-layer supports, the supports are fixed through bolts and anti-skid gaskets, and stable and reliable load transmission is guaranteed. The bearing capacity of the structure is improved, and the service life of a plant is prolonged. Due to the design of the swing wind-resistant mechanism, the structure can flexibly adapt to wind power, flexible connection and swing of the structure are achieved through cooperation of the connecting base, the head, the rod and the universal ball, and a balance weight part can be conveniently added.

Described herein is framing system comprising shaped extrusions fixingly cooperating with couplings, the couplings configured to couple together the shaped extrusions or a part thereof along with related items, kitsets and methods of assembly. In one aspect, the framing system may comprise: shaped extrusions comprising internal ports, the internal ports configured to fixingly cooperate with couplings; and couplings configured to couple together the shaped extrusions or a part thereof.

The present invention relates to the technical field of round bamboo arch roofing, and specifically discloses a round bamboo arch roofing and a purlin installation method; among them, the purlin support device includes a fixing member arranged along the arc direction of the round bamboo arch and installed on the round bamboo arch, and multiple groups of steel purlin supports arranged along the length direction of the round bamboo arch and installed on the fixing member; an installation slot is arranged on the steel purlin support. And a roofing structure and a purlin installation method based on the purlin support device are also disclosed; the present invention realizes the connection of the purlin to the upper surface of the bamboo arch from a spatial line-plane connection to a point-line connection, solves the position conflict of the spatial purlin connection, has good applicability, can realize the installation of purlins for complex spatial bamboo arch roofing, achieves the purpose of dispersing concentrated loads, and reduces the risk of splitting caused by concentrated loading on the round bamboo arch.

The present invention provides a construction method for pouring concrete on a hanging basket for a rigid skeleton arch bridge. A suspension and walking system and a hanging basket bottom formwork system are installed at the arch foot position of the rigid skeleton arch bridge. The suspension and walking system is a self-propelled system that can walk along the rigid skeleton arch bridge. The hanging basket bottom formwork system is suspended below the suspension and walking system. The bottom formwork for pouring concrete on the outside adopts a separated bottom formwork in the form of an independent hanging basket and is not bundled with the rigid skeleton arch bridge for hoisting. The suspension and walking system is suspended on the top surface of the rigid skeleton arch bridge. The hanging basket bottom formwork system is installed on the rigid skeleton arch bridge. The supporting suspension and walking system can crawl along the arch, and the external concrete pouring construction of the entire bridge adopts the construction method of pouring the bottom formwork hanging basket in sections. The number of bottom formworks required is small, which greatly saves material costs. After the installation of the rigid frame arch bridge is completed, the hanging basket bottom formwork system is installed separately to reduce the hoisting weight of the rigid frame, reduce the cable crane cost, and improve the hoisting safety. After the external concrete construction is completed, the dismantling of the suspension and walking system and the hanging basket bottom formwork system is also returned to the arch foot position of the rigid frame arch bridge to reduce the safety risk of high-altitude demolition.

A built-up structural element includes a pair of steel hollow structural sections, each having a hollow and generally rectangular cross-sectional shape, a plurality of openings, and a plurality of bolt holes distinct from the openings, wherein the steel hollow structural sections are stacked together in a stacked configuration, and a plurality of bolts extending through the plurality of bolt holes and securing the pair of steel hollow structural sections together in the stacked configuration. A built-up structural element includes a pair of steel hollow structural sections, each having a hollow and generally rectangular cross-sectional shape, a plurality of openings, and a plurality of bolt holes distinct from the openings, wherein the steel hollow structural sections are coupled to one another using a plurality of bolts extending through the plurality of bolt holes.

This invention discloses a large-span roof structure, including curved timber beams, both ends of which are fixed to a concrete foundation. Each curved timber beam comprises multiple sequentially spliced ​​curved timbers, with a splicing structure between adjacent curved timbers. A glued laminated timber beam comprises multiple sequentially butted glued laminated timbers, with adjacent glued laminated timbers connected by a butt joint. The butt joint includes a butt plate, with a first insert on one side and a second insert on the other. Adjacent glued laminated timbers are respectively provided with slots that mate with the first and second inserts. The large-span roof structure of this invention is stable and reliable, with strong load-bearing capacity and high stability. The curved timbers and glued laminated timbers can be prefabricated in a factory and assembled mechanically on-site, reducing the construction period and improving construction efficiency and installation accuracy. The splicing structure between adjacent curved timbers allows for a convenient, quick, stable, and reliable connection between them.

The invention discloses an arch crown structure of a metro large-span column-free station hall layer node transfer station, which comprises a truss structure, the truss structure is continuously and uniformly arranged on a bracket provided with a side wall along the longitudinal direction of a metro station large-span column-free station hall, and the truss structure is rigidly connected with an arch top plate and is used for balancing the horizontal thrust of an arch foot. The truss structure integrating the pipeline supporting and hanging function and the function of pouring the concrete steel formwork on the arched top plate is arranged, and the problems that in traditional design, the clear height of a building is insufficient, pipeline construction is complex, and arched top plate high formwork construction is complex are solved. The truss structure disperses the horizontal thrust through the internal triangular stabilizing units, the anti-seismic performance is improved, meanwhile, collaborative optimization of the structure and functions is achieved, and remarkable economic and engineering application value is achieved. The column-free station structure is simple in structure, reasonable in stress, convenient to construct and good in anti-seismic property, the building function and the attractive effect in a column-free station can be effectively improved, and the column-free station structure can adapt to complex stress under the asymmetric boundary condition.

The present invention provides a support frame for use in a system for supporting a horizontal slab, the support frame comprising a horizontal beam comprising a first corbel element on the first side face, the first corbel element comprising at least one corbel extending along at least a portion of the length of the horizontal beam between the first and second ends, the at least one corbel having a horizontal top surface; and at least two columns extending downwardly from the horizontal beam, said columns being spaced apart from each other; wherein said support frame being formed as a reinforced concrete unitary body. The present invention also provides a system for supporting a horizontal slab employing two or more support frames.

A one-piece structural fuse assembly is disclosed that is formed from a single piece of structural steel such as a beam. In embodiments, a first flange of the beam may form the fuse base, and a portion of the web of the beam may form the fuse plate. Additionally, a buckling restraint plate of the structural fuse assembly may be formed from a second flange of the beam, and the spacers of the structural fuse assembly may be formed from a portion of the web unused by the fuse plate. In examples, all of the components cut from the single piece of the beam are used in a single structural fuse assembly.

A multi-storey building frame is constructed by manufacturing portal frames off site and transporting them to the site and erecting them to form a high precision building frame in an accurate manner. The method involves placing a series in a longitudinal direction of portal base frames, the base frames each having a pair of opposed wall frames, a structural ceiling frame, and a lower tie or structural frame spanning the wall frames at or near ground level. Sheeting is secured across the tops of the base frames. A series of portal top storey frames is placed over the sheeting to form a frame for a top storey and a roof, each said top storey frame comprising: a pair of opposed wall frames, a roof truss, and a lower tie or structural frame.

The invention discloses an arc-shaped beam construction method based on Rhino and Grasshopper. The specific construction process comprises the steps that firstly, construction preparation is conducted; 2, confirming a site coordinate base point; 3, preliminarily processing the model; 4, creating a model; step 5, reference point coordinate re-checking; checking whether the drawing and the model reference point coordinates are correct or not; step 6, creating and adjusting a lofting point; step 7, outputting coordinates; the coordinate points are exported in batches by utilizing a Grasshopper plug-in; 8, carrying out on-site lofting; and 9, comparing and analyzing data. A construction content model is established by adopting a Rhino modeling technology, coordinate data of a setting-out point are extracted and imported into a total station by adjusting a coordinate system of the model, and finally building setting-out measurement is carried out. The problem of accurate positioning of the arc-shaped beam is solved, and the construction quality of the arc-shaped beam is well guaranteed.

The utility model discloses an arc-shaped unit window installation bearing beam which comprises a plurality of unit beams which are in butt joint end to end to form a bearing beam of an arc-shaped structure. The connecting assembly is connected with the unit beam, and the connecting assembly is connected with a concrete structure; the first positioning hole is formed in the upper surface of the unit beam and corresponds to a mounting groove in a lower support of a unit window; the second positioning hole is formed in the bottom surface of the unit beam; and the second positioning hole corresponds to a mounting groove in an upper support of the unit window. According to the scheme, the unit beams are fixed to the building body surface of the concrete structure of the building through the connecting assemblies, the multiple unit beams are in butt joint end to end to form the bearing beam of the arc-shaped structure, the arc-shaped unit window is installed through the bearing beam, and the installation precision of the arc-shaped unit window can be met; meanwhile, concrete bearing beams are replaced by the bearing beams, so that the construction period is shortened, and the cost is reduced.

The application discloses a kind of based on traditional shoveling frame wood structure derivative inner overhanging lattice building structure system, the system is connected by lattice connection beam unit and lattice inclined strut unit in the direction of open space by multiple plane structure units;Single plane structure unit includes first side column unit, second side column unit, first side roof unit, second side roof unit and base;First hanging column and second hanging column are connected, first side column unit and second side column unit, and first side roof unit and second side roof unit, are mirror image symmetry about ridge middle part.The application realizes high and spacious column-free space in middle part by overhanging structure, improves space flexibility;Solid section is replaced by lattice component, significantly improves bending stiffness and bearing efficiency under similar material consumption, realizes lightweight structure;With the composite connection of less number of inclined metal bolts and epoxy resin adhesive, traditional mortise and tenon is replaced, and rigid connection of node is realized.