23results about How to "Improve leaping ability" patented technology

The invention relates to the technical field of bridge construction, and provides a construction method of a cable-stayed-continuous cooperative system composite beam bridge, which does not need to arrange a large batch of prestressed corrugated pipes and steel beams to ensure the use performance of a bridge deck slab, fully utilizes the structural characteristics of the cable-stayed-continuous cooperative system composite beam bridge, and improves the construction efficiency of the cable-stayed-continuous cooperative system composite beam bridge. By changing the overlapping sequence of the continuous composite beam bridge deck slabs, it is guaranteed that the bridge deck slabs in the hogging moment area of the continuous composite beam do not generate tensile stress, the bridge deck slabs in the sagging moment area generate pressure stress reserve, and by increasing the tension stay cable force, the continuous composite beam moves upwards close to a side main beam of the cable-stayed bridge and moves downwards close to a side span side main beam; the bridge deck slab generates compressive stress, the steel main beam generates tensile stress, the compressive property of concrete materials and the tensile property of steel are fully played, the material utilization rate is increased, the compressive pre-stress of the bridge deck slab is completed through internal force distribution of the composite beam, the construction method is simple and operable, the structural stress is clear, and the reasonability and safety of the structural stress are guaranteed.

The invention belongs to the technical field of underwater laser detection, and discloses a complex hydrological multi-target laser polarization detection device which is designed by adopting a transceiving heteroaxial design, effectively overcomes strong background interference of a water body, splits scattered light collected by a single telescope into four different polarization angles (0 degree, 45 degrees, 90 degrees and 135 degrees), and improves the detection accuracy. Signal amplitude detection is carried out through a PMT photoelectric detector, meanwhile, according to interval numerical values provided by a simulation time-varying model, adjustment can be carried out for different water qualities and detection threshold values of different target receivers, the system detection robustness can be effectively improved, and under the water quality with the attenuation coefficient larger than 0.385 m <-1 >, the system detection robustness can be effectively improved within the 8m range. Detection and material identification are carried out on a target with the diameter larger than 300 microns, meanwhile, data processing is concise and efficient, and the real-time performance is high. The working principle is advanced, the technical method is unique and novel, and the real-time requirement of multiple targets in a complex water area is met.

The invention discloses an open-web area structure for a concrete open-web continuous rigid frame bridge, which comprises an upper chord beam section and a lower chord beam section, the upper chord beam section is horizontally arranged, the lower chord beam section is positioned below the upper chord beam section, and the lower chord beam section is of an arc-shaped structure arched towards the upper chord beam section; the lower chord beam section is obliquely arranged and forms an integral box beam with a convergence node of the upper chord beam section; the upper chord beam section comprises a top plate and at least one upper chord web which is vertically connected below the top plate; the lower chord beam section comprises a bottom plate and lower chord webs, the number of the lower chord webs is the same as that of the upper chord webs, the upper chord webs are vertically connected to the upper portion of the bottom plate correspondingly, and the upper chord webs and the lower chord webs are connected into a whole at a convergence node through arc transition. The structure is simple, construction and stress transition are smooth, the manufacturing cost is low, construction is convenient, and durability is good.

The invention discloses a two-way stiffening earthing corrugated steel plate arch bridge containing waste tire fragment filler. The arch bridge is composed of a steel skewback, a corrugated steel plate arch ring, a corrugated steel web stiffening arch, a corrugated steel web stiffening beam, a steel bracket, an angle steel connecting piece, a reinforcing piece, waste tire fragments, compacted sand and a bridge deck. The waste tire fragments are light in dead weight and compressible, the positive soil arch effect can be easily formed, the deformation and stress level of the corrugated steel plate arch ring is greatly reduced, meanwhile, solid waste recycling is achieved, the influence on the environment is extremely small, and the concept of ecological environmental protection is met. The steel skewback can greatly reduce the stress of the foundation, is suitable for differential settlement of the foundation, and greatly strengthens the applicability of the arch bridge in bad foundations; the steel bracket is suitable for connection of corrugated steel web stiffening beams and stiffening arches with any wing plate width and corrugated steel plate arch rings. Rigidity, buckling resistance and bearing capacity of the corrugated steel plate arch ring are remarkably improved through the corrugated steel web stiffening beams and the stiffening arches which are arranged in a crossed mode, and the spanning capacity of the arch bridge is greatly enhanced.

The utility model belongs to the field of bridge construction, and provides a steel plate girder bridge suitable for pipeline overhead, which comprises a pipeline, a steel grating plate and two I-shaped main beams, a plurality of cross beams are arranged between the two main beam top plates and between the two main beam bottom plates, the cross beams between the two main beam top plates jointly form an upper layer supporting structure, the steel grating plate is installed on the upper layer supporting structure, the cross beams between the two main beam bottom plates jointly form a lower layer supporting structure, and the steel grating plate is installed on the lower layer supporting structure. The pipeline is mounted on the lower-layer supporting structure; the bridge structure further comprises a cover beam and a pile foundation, the cover beam is fixed to the top end of the pile foundation, two support cushion stones are arranged at the top end of the cover beam, and the two main beams are installed on the two support cushion stones respectively. In the beam bridge, the I-shaped steel plate beams are adopted as the main beams, the spanning capacity of the beam bridge can be effectively improved, the cross beams are arranged between the main beams to serve as upper and lower layer supporting structures, the transverse force transmission requirement is met, and the structural stability is improved.

The utility model relates to the technical field of offshore photovoltaic power generation, in particular to an offshore photovoltaic power station. The offshore photovoltaic power station comprises three supporting pieces and three arched outer trusses, the three supporting pieces are distributed in a triangular shape, the two ends of the first outer truss are connected with the first supporting piece and the second supporting piece respectively, the two ends of the second outer truss are connected with the second supporting piece and the third supporting piece respectively, and the third supporting piece is connected with the third supporting piece. The two ends of the third outer truss are connected with the third supporting piece and the first supporting piece correspondingly. Every two adjacent outer trusses are connected through at least one reinforcing inner truss. Due to the fact that the three arched outer trusses form a special triangular structure with three arched edges, the stability of the triangular structure is high, the stability of the truss arches is high, the stability and the safety of the formed overall structure are high, the stability of the overall structure is further improved through connection of the reinforced inner truss, and the overall structure is more stable. Therefore, the offshore photovoltaic power station has a strong capability of resisting severe sea conditions.

This invention relates to the field of belt conveyor technology and discloses a tubular belt conveyor system, comprising: at least two support sections; a cable assembly connected to the at least two support sections, the cable assembly including multiple cables arranged in parallel; several sets of support rod assemblies spaced apart along the extension direction of the cables, each set of support rod assemblies including multiple support rods connected end-to-end in sequence, each support rod connected between two adjacent cables, and idlers connected to the support rods, the idlers being rotatable relative to the support rods, the idlers on the multiple support rods forming a receiving space; and a conveyor belt extending along the extension direction of the cables and located within the receiving space formed by the idlers. By connecting several support rod assemblies to the cable assembly to form a flexible system to support the conveyor belt, the cables and support rods support each other, resulting in a stable structure, lighter weight, higher cable load-bearing capacity, and stronger spanning capacity of the entire system; directly mounting the idlers on the support rods simplifies assembly, facilitates construction, reduces steel consumption, lightens weight, and reduces the load on the support sections.

The large-span double-frame prestressed CFRP suspension cable truss structure is a new type of CFRP suspension cable truss roof bearing structure system. The roof bearing structure system includes a main truss, a vertical support system and connecting rods. The main truss consists of two CFRP suspension cable trusses and a balance bar, and the vertical support system consists of a support column and a pipe truss. The CFRP suspension cable truss includes an upper CFRP suspension cable, a lower CFRP suspension cable, a vertical CFRP suspension cable and a suspension cable clamp; the CFRP suspension cable truss obtains bearing capacity by tensioning the upper CFRP suspension cable, and the two CFRP suspension cable trusses in each main truss are connected by a balance bar to form a force-bearing whole of the main truss, which can realize the large-span layout of the roof; the double-layer CFRP suspension cable can withstand horizontal, vertical loads and wind suction, and the main load-bearing component CFRP suspension cable has the advantages of light weight, high strength and corrosion resistance, which can realize the large span capacity and stable operation of the roof structure.

The present invention discloses a truss bridge with a spatial twisting form and a construction method thereof. The main truss chord structure of a traditional truss bridge which is parallel to each other and extends in a straight line is designed into a mutually staggered curved chord structure with a spatial twisting form, comprising a main truss structure, a plurality of portal frames evenly distributed on the main truss structure along the bridge direction, a bridge deck, piers supporting the entire bridge truss structure, and supports arranged between the piers and the truss structure; the main truss structure comprises a left upper chord, a right upper chord, a left lower chord and a right lower chord, and the portal frame is formed by a crossbeam, a web member, an upper horizontal longitudinal link and a lower horizontal longitudinal link closed along the transverse direction of the bridge; by merging the right lower chord and the right lower chord into a chord, dividing the left lower chord into two, twisting the separated chord into a left upper chord, and twisting the original left upper chord into a right upper chord, there is no need to add excessive building decoration materials, the force requirements of the bridge structure itself are combined with the requirements of architectural modeling, it is more economical and reasonable than conventional methods, and the spanning capacity is greater.

The present invention discloses an assembled large-span cold-bent solid arch structure, including a rigid arch unit, a dense tie rod connection unit, and a non-dense tie rod connection unit. The rigid arch unit, the dense tie rod connection unit, and the non-dense tie rod connection unit are all made of steel. The dense tie rod connection unit and the non-dense tie rod connection unit connect the rigid arch unit to an integral structure through a specific connection node, and are all bolted during on-site installation. The present invention is an assembled structure, with no welding at the construction site, a short construction period, and easy control of construction quality; the structure is an arch structure, with clear force transmission, fewer components, small structural deadweight, large spanning capacity, saving steel, and high space utilization; there are few dead angles in the components, the workload of secondary rust removal and anti-corrosion is small, and the rust removal quality is easy to control, which has practical significance and good application prospects.

The invention discloses a steel-concrete combined open-web type continuous rigid frame bridge structure which comprises a main pier and a transition pier or a bridge abutment, the main pier is divided into a lower pier column and an upper pier column, the lower pier column is of a double-limb structure, the upper pier column and the lower pier column are connected through a lower chord No.0 beam section, and the two longitudinal sides of the lower chord No.0 beam section extend out of the lower chord beam section. The lower chord beam section is divided into a plurality of small sections which are arranged in parallel with the upper chord beam section in the inclined upward direction; the upper pier column, the upper chord beam section and the lower chord beam section form a triangular hollow area; a vertical connecting column is connected between the upper chord beam section and the lower chord beam section; span beam sections are symmetrically arranged on the two longitudinal sides of the convergence node to form a balanced T-shaped structure which takes the main pier as a symmetry point and comprises an open web area; the adjacent main piers are connected through a main span closure section, and the main piers and the side span beam sections are connected through side span closure sections. According to the method, the bearing efficiency of the beam type bridge structure can be improved, the larger spanning capacity is achieved, the method is well connected with a traditional construction method, and implementation is convenient.

A large-span trapezoidal space steel tube truss concrete floor structure includes a concrete floor and a large-span trapezoidal space steel tube truss, and the concrete floor directly bearing the floor load is arranged on the T-shaped support of the three-tube upper chord of the large-span trapezoidal space steel tube truss; the basic unit of the large-span trapezoidal space steel tube truss is a bay, each bay is composed of a three-tube upper chord, a two-tube lower chord, a four-cornered pyramid diagonal web, an upper chord horizontal bar and a lower chord horizontal bar, and the cross-sectional shape of the basic unit is an inverted trapezoid arranged in a triangular shape; the large-span trapezoidal space steel tube truss adopts the intersecting connection of the steel tube direct welding node; the concrete floor adopts an assembled prefabricated plate or a steel-concrete composite floor. The present invention has a reasonable structure, simple construction, clear force transmission, and convenient installation. The floor secondary beam and the out-of-plane secondary truss of the space truss are not set, the steel consumption is small, the rigidity is large, the bearing capacity is high, the spanning capacity is strong, the comfort is good, and the mechanical properties are excellent.

The present invention provides a space grid steel truss beam suitable for a suspended monorail, comprising a space curved grid and a track beam, wherein the track beam is arranged throughout the space curved grid, and a track beam suspension assembly is arranged inside the space curved grid, and the top of the track beam is connected to the space curved grid through the track beam suspension assembly, and approach bridge piers are arranged below both ends of the track beam, and a portal arch ring is arranged on the space curved grid at the beam end support pier position, and the portal arch ring is connected to the approach bridge pier through a pier body column. In addition, the present invention also provides a construction method for the space grid steel truss beam. After the invention is strengthened by the space curved grid, the spanning capacity of the suspended monorail is significantly improved, and the demand for a large span of the bridge span structure at control nodes such as the need for the bridge to cross some larger intersections can be met, and the appearance is beautiful and can better meet the needs of urban landscape.

The invention discloses a lightning pulse comprehensive protection device for a motor control driver. The lightning pulse comprehensive protection device comprises a first filter connector, a second filter connector, a third filter connector, a power supply filter circuit, an RS422 bus protection circuit and a lightning pulse shielding cable, the power supply circuit is connected with an external power supply sequentially through the power supply filter circuit, the first filter connector and the power supply cable; the communication circuit is connected with an external upper computer through the RS422 bus protection circuit, the second filter connector and the communication cable in sequence; the driving circuit is connected with an external motor through a third filtering connector and a driving cable in sequence; a three-stage filtering voltage-stabilizing protection circuit board is arranged in the filtering connector and comprises a surge voltage suppression circuit, a peak voltage suppression circuit and a voltage stabilizing circuit; the power supply filter circuit is used for filtering; and the RS422 bus protection circuit is used for stabilizing voltage and limiting current. The invention provides lightning pulse comprehensive protection measures for each functional circuit of the motor control driver so as to realize lightning pulse comprehensive protection of the motor control driver applied to the field of flight products.

The present application relates to pipe belt machine conveying technical field, disclose a kind of flexible multi-path pipe belt machine conveying system, comprising: ground support assembly, along the length direction of pre-set conveying path is arranged with multiple groups, ground support assembly is fixedly installed with flexible suspension cable assembly;Pipe belt support, fixedly installed on flexible suspension cable assembly, pipe belt support is provided with at least two conveying installation holes and at least one return installation hole;Conveying mechanism is provided with at least two groups, conveying mechanism is arranged along the extension direction of flexible suspension cable assembly, the conveying belt support of conveying mechanism is installed in conveying installation hole, the return belt support of conveying mechanism is installed in return installation hole.By using flexible suspension cable assembly and combining with the pipe belt support integrated with multi-path conveying channel, the material consumption and system deadweight can be reduced.

The invention discloses a large-span ground-anchored composite beam cable-stayed bridge and a construction method thereof, comprising cable towers located at both sides of the cable-stayed bridge and abutments located outside the cable towers, wherein concrete beams are respectively arranged on the inner sides of the abutments, steel-concrete combined sections are respectively arranged on the inner ends of the concrete beams, steel-UHPC composite beams are respectively connected to the inner ends of the two steel-concrete combined sections, and an adaptive connection device is arranged between the inner ends of the steel-UHPC composite beams; the adaptive connection device comprises two large box beams respectively fixedly connected to the steel-UHPC composite beams, a plurality of box chambers are arranged in the middle of the large box beams along the length direction of the bridge, a sliding support mechanism is arranged on the inner periphery of the box chamber, the sliding support mechanism is connected to a guide beam, and a damping shock-absorbing structure and an expansion joint are arranged between the two large box beams; cables connected to the cable towers are respectively arranged on the abutments, the concrete beams and the steel-UHPC composite beams; the invention has the advantages of outstanding spanning capacity, stable performance of the adaptive connection device and good bridge deck performance.

The invention belongs to the field of constructional engineering, and particularly relates to a steel column and prefabricated prestressed composite beam light fabricated frame and a construction process thereof. The frame comprises one or combination of a steel pipe column and prestress combination beam frame structure and an I-shaped steel column and prestress combination beam frame structure, and the steel pipe column and prestress combination beam frame structure is one or combination of an embedded bolt-angle steel connection mode and an outer reinforcing ring-steel plate connection mode. The I-shaped steel column and prestress combination beam frame structure is one or combination of an angle steel-bolt connection mode and an end plate-unilateral bolt connection mode. According to the steel and concrete combined beam, the steel beam and the concrete plate are connected into a whole through the shear connectors, concrete in the combined section is pressed, the steel beam is mainly pulled, the material characteristics of steel and concrete can be fully exerted, the problem that the pressed side of a single steel beam is bent and unstable is solved, and the steel and concrete combined beam has the advantages of being high in bearing capacity, good in ductility and overall stability, small in section height and the like.

The present invention relates to the technical field of bridge construction, and provides a construction method for a cable-stayed continuous collaborative system composite beam bridge. The method does not require the arrangement of a large number of prestressed corrugated pipes and steel bundles to ensure the performance of a bridge deck, and fully utilizes the structural characteristics of the cable-stayed continuous collaborative system composite beam bridge itself. By changing the overlapping sequence of the continuous composite beam bridge deck, it is ensured that the bridge deck in the negative bending moment area of ​​the continuous composite beam does not generate tensile stress, while the bridge deck in the positive bending moment area generates compressive stress reserve. By increasing the tension of the cable-stayed cable, the continuous composite beam is displaced upward near the main beam on the side of the cable-stayed bridge, and the main beam on the side of the side span is displaced downward, so that the bridge deck generates compressive stress and the steel main beam generates tensile stress, and the compressive performance of the concrete material and the tensile performance of the steel material are fully utilized, thereby improving the material utilization rate. The pre-compressive stress of the bridge deck is completed by distributing the internal force of the composite beam itself. The construction method is simple and operable, and the structural stress is clear, thereby ensuring the rationality and safety of the structural stress.

The invention discloses a one-way laminated slab structure of a special-shaped cavity bottom plate. The one-way laminated slab structure is composed of the special-shaped cavity bottom plate which is transversely and closely spliced, post-pouring concrete, a surface layer reinforcing mesh, longitudinal connecting reinforcing steel bars and longitudinal connecting concrete. The special-shaped cavity bottom plate is composed of a longitudinal through bottom rib, a vertical rib, an arch rib, an inclined rib and an angle brace, a plurality of special-shaped sections with cavities in different shapes are formed, the special-shaped cavity bottom plate is made of ultra-high performance concrete (UHPC), and the special-shaped cavity bottom plate does not need to be provided with reinforcing bars. The special-shaped cavity bottom plates are longitudinally connected through longitudinal connecting steel bars and longitudinal connecting concrete, and the longitudinal connecting steel bars and the longitudinal connecting concrete are arranged in cavities in the corners of the special-shaped cavity bottom plates. The special-shaped cavity bottom plate is transversely connected through post-poured concrete and a surface layer reinforcing mesh; the section form of the special-shaped cavity bottom plate can be optimized, the line shape of the arch rib can be designed into an arc line or a parabola, the inclined angle of the inclined rib can be adjusted, and the angle and the number of the angle brace can be adjusted. The one-way laminated slab structure of the special-shaped cavity bottom plate saves materials, is light in self weight and high in performance, can achieve mold-free, support-free, sound-insulation and heat-insulation, and achieves an efficient and high-quality structure.

This invention discloses a method for determining the lower edge curves of the mid-span and lower chord beams of a hollow continuous rigid frame bridge, including determining the total height H between the upper and lower chord beams in the hollow area and the height h of the lower chord beam in the hollow area. 1 The height h of the upper chord beam in the empty area 2 Beam height at the junction of the upper and lower chords, and the range L of the mid-span beam segment. m and the height h of the mid-span beam 3 The method calculates the lower edge curve F(x) of the mid-span beam segment and the lower edge curve G(x) of the hollow lower chord beam segment; calculates the continuity of the function and first derivative of curves F(x) and G(x) at the connection point of the upper and lower chords; in this method, the lower edge curve of the mid-span beam segment conforms to the stress characteristics of the mid-span beam segment in cantilever construction; the upward arch of the lower edge curve of the hollow lower chord beam segment balances the self-weight of the lower chord beam segment and the load transmitted by the upper chord; the structural transition and stress transmission between the mid-span beam segment and the hollow lower chord beam segment are smooth; the lower edge curves of the mid-span beam segment and the hollow lower chord beam segment are optimized, making the structure of the hollow continuous rigid frame bridge more reasonable.

The invention relates to an oblique crossing canal steel arch bridge few-support large-segment installation construction method which comprises the following steps that S1, a left straining beam installation support and a right straining beam installation support of an arch bridge are arranged in the navigation direction of an under-bridge canal channel, and the connecting line of the left straining beam installation support and the right straining beam installation support forms an oblique angle with the axis of a bridge; s2, the left straining beam and the right straining beam are installed in an asymmetric subsection mode; s3, an end cross beam is installed between the left straining beam and the right straining beam, after an integral frame is formed, the left straining beam installation support and the right straining beam installation support are heightened, an arch rib installation support is formed, and then arch ribs are installed on the arch rib installation support; and S4, suspenders are installed between the arch rib and the left straining beam and between the arch rib and the right straining beam, and then standard cross beams and bridge deck slabs are installed. Compared with the prior art, the number of the supports is reduced, the span of the supports is reduced while oblique angle navigation is met, the bending moment in the straining beam construction process is reduced, the spanning capacity of the supports is improved, and the using amount of materials is reduced.