64 results about "Vertical shear" patented technology

The utility model relates to a special shearing device for manufacturing high-transmittance and high-scattering glass in the technical field of glass production equipment, which comprises a shearing platform, a movable door-shaped frame is arranged on the shearing platform, a shearing knife is arranged on the door-shaped frame, a vertical telescopic rod is connected to the shearing knife, the vertical telescopic rod is movably arranged on the door-shaped frame, and the vertical telescopic rod is connected with the shearing knife. The moving direction of the vertical telescopic rod is perpendicular to the moving direction of the door-shaped frame. A groove is formed in the shearing platform, universal balls are fully distributed in the groove, limiting plates are arranged on the two sides of the groove and connected with horizontal telescopic rods, a through hole is formed in the portion, between every two adjacent universal balls, of the groove, a collecting box is arranged below the shearing platform, and the through holes communicate with the collecting box. The glass shearing device is reasonable in structure, capable of limiting glass, high in stability in the shearing process, capable of improving the shearing effect and efficiency, convenient to load and unload the glass, capable of reducing damage to the surface of the glass, capable of collecting and uniformly treating powder generated in the shearing process and capable of reducing dust pollution.

The utility model provides an assembly type shear wall upper and lower layer vertical connection node, which relates to the technical field of shear walls, and comprises a plurality of groups of shear wall units connected with each other, each shear wall unit comprises an inner wall plate and an outer wall plate, a transverse rib is arranged between each inner wall plate and each outer wall plate, and a connecting piece is connected between the upper and lower adjacent shear walls. The connecting piece comprises a lower baffle, a first drag hook is connected to the lower baffle, a pull rod is fixedly connected to the top of the lower baffle, a threaded section is arranged at the upper end of the pull rod, a second drag hook is connected to the upper baffle, and a nut used for tightening the distance between the upper baffle and the lower baffle is in threaded connection with the threaded section. According to the design, the connecting pieces are adopted as connecting joints between the upper shear wall unit and the lower shear wall unit, the transverse bars between the upper shear wall unit and the lower shear wall unit are tied, the connecting mode is more efficient and faster, a steel framework can be formed in the subsequent pouring process, the connecting strength between the vertical shear walls is firmer, and the shear resistance is better.

The application provides an FRP / steel composite constraint UHPC anchor plate system and a use method thereof, and solves the problem that the anchor hole of the existing anchor plate is difficult to repair after deformation, and the anchor plate is made of a whole thick steel plate, so that the weight of the anchor plate is large, the cost is high, and the transportation and assembly are laborious. The application reduces the steel material proportion of the original anchor plate structure, replaces the steel material with a large amount of FRP material and UHPC material, saves the cost, and reduces the overall weight of the anchor plate structure. Meanwhile, the composite anchor plate is assembled by using a plurality of detachable accessories, the weight of each accessory is reduced, and the transportation and assembly are facilitated. The outer layer constraint is made of steel material with better vertical shear resistance, the problem of low shear strength caused by the weak strength of the FRP material in the vertical fiber direction is avoided, the structure is more scientific and reasonable, and the deformation resistance is better.

The invention relates to the field of shear walls, in particular to a self-heat-preservation assembly type laminated shear wall structure which comprises a plurality of shear wall bodies, a vertical connecting mechanism and a transverse connecting mechanism, a plurality of pouring grooves are formed in the shear wall bodies, and the vertical connecting mechanism comprises a first square frame and a second square frame. Through cooperation of a first square frame, a second square frame and a vertical limiting assembly, when the two shear wall bodies are vertically spliced, primary self-locking between the two vertical shear wall bodies can be achieved while splicing is conducted, and through cooperation of a sliding rail, a sliding piece and a transverse limiting assembly, secondary self-locking between the two vertical shear wall bodies can be achieved; when the two shear wall bodies are vertically spliced, primary self-locking between the two shear wall bodies in the transverse direction can be achieved while splicing is conducted, and therefore the step of additionally installing supporting rods is omitted, the assembling efficiency between the two shear wall bodies can be effectively improved, and the overall construction efficiency can be effectively improved.

The utility model belongs to the technical field of bridge engineering, and particularly relates to a PBL shear key used on a segmental box girder. The PBL shear key structure is mounted at the joint of in-box web plates of two adjacent segments of box girders, and comprises a fixing plate of which the two sides are respectively connected with the in-box web plates of the two adjacent segments of box girders, and at least three positioning plates which are arranged on the fixing plate and are arranged along the splicing direction vertical to the segment box girders, and the connecting steel bars are perpendicular to the positioning plates and are used for connecting all the positioning plates. The structure at least comprises the fixing plates, the positioning plates and the connecting steel bars, so that the vertical shear stress at the splicing position of the segmental box girders can be quickly transmitted to the positioning plates through the fixing plates and dispersed, and the vertical shear resistance requirement of the splicing position of the segmental box girders is improved.

The invention discloses a pre-stressed anchor cable testing device which comprises a base, two ends of the upper side of the base are fixedly connected with gantries respectively, a beam plate is arranged between the two gantries, anchoring holes are formed in the bottom of the beam plate, simulated surrounding rock is arranged around the anchoring holes, baffles are arranged on two sides of the simulated surrounding rock, and sliding grooves are formed in the sides, close to the simulated surrounding rock, of the baffles. At least one sliding plate is slidably connected into the sliding groove, and a plurality of supporting rods are sequentially hinged to one side of the sliding plate. A reference shaft is arranged between every two adjacent supporting rods, the supporting rods are rotationally arranged on the reference shafts in a staggered mode, and limiting devices for limiting relative rotation of the supporting rods and the reference shafts are arranged in the reference shafts. Hooks are arranged at the lower ends of the sliding plates. The device has the advantages that free rotation is achieved through the multiple supporting rods and the reference shafts between the adjacent supporting rods, the larger the number of the supporting rods is, the smaller the interference to the simulated surrounding rock is, and the vertical shear test of the simulated surrounding rock is not affected.

The blade (400) includes a blade body (402) extending a blade length (404) and having a blade depth (406). The blade (400) also includes a flat portion (408) arranged at a forward face, extending a flat length (410) less than the blade length (404). The blade (400) further includes at least one angled portion (414, 416) arranged at the forward face, coupled to the flat portion (408) and positioned at an angled angle (422), wherein the at least one angled portion (414, 416) includes a cutting edge (418, 420).

The utility model discloses a connecting structure of a building added elevator steel structure box beam and an original building main body, which relates to the field of building structure engineering, and comprises a concrete beam, a steel plate is arranged on the side wall of the concrete beam, an oblong hole is formed in the inner wall of the concrete beam, equivalent screw rods are arranged on the inner wall of the concrete beam, and the equivalent screw rods are connected with the steel plate. A first nut is installed on the outer wall of the equivalent screw, an end plate is installed at the end of the box beam, a first connecting plate is installed on the outer wall of the end plate, a second connecting plate is installed on the outer wall of the steel plate, and a stainless steel bolt is installed on the inner wall of the second connecting plate. Through the arrangement of the concrete beam, the steel plate, the oblong holes, the equivalent screws and the first nuts, the flexural capacity of the concrete beam is reinforced while anchoring is met through the installed steel plate, then the concrete beam only bears vertical shearing force through the additional arrangement of the oblong holes, and generation of eccentric bending moment is effectively avoided.

The present application relates to a VTI medium shear wave anisotropy parameter estimation method based on seismic shear wave inversion. It includes obtaining seismic shear wave data and well logging data; determining shear wave anisotropy parameter well data according to the well logging data; determining VTI medium shear wave inversion initial model according to the seismic shear wave data and the shear wave anisotropy parameter well data; determining synthetic data according to the VTI medium shear wave reflection coefficient improved approximate equation; determining the objective function according to the seismic shear wave data, the synthetic data and the VTI medium shear wave inversion initial model; determining the VTI medium shear wave inversion result by using the objective function; and determining the VTI medium shear wave anisotropy parameter according to the VTI medium shear wave inversion result. The present application inverses the shear wave impedance and the horizontal shear wave velocity, and obtains the relationship between the shear wave impedance and the vertical shear wave velocity according to the well logging data, so as to estimate the shear wave anisotropy parameter, and effectively realize the seismic shear wave inversion for anisotropic medium.

The utility model discloses a foundation pit inclined strut supporting structure which comprises a fender post vertically arranged around the side wall of a foundation pit and an inclined support arranged on the inner side of the fender post, a horizontal support is arranged between the fender post and the inclined support, one end of the horizontal support is arranged on the inner side of the fender post through an enclosing purlin, and the other end of the horizontal support is connected through a horizontal cross beam. The upper end of the inclined support is connected with the lower side wall of the horizontal support, and the lower end is connected with the bottom of the foundation pit. According to the scheme, the horizontal supports, the enclosing purlins and the horizontal cross beams form the horizontal supporting frame, a stable structure is formed, the connecting strength is enhanced, and the integrity of the supporting structure is improved; the site applicability is increased, the site requirement is reduced, and construction is facilitated; the horizontal support and the inclined support are connected through the steel strand rope, and the vertical force of the inclined support is converted into the horizontal force of the horizontal support, so that the upper end of the fender post bears the horizontal force, the vertical shearing force of the upper end of the fender post is reduced, and the stress performance of the upper end of the fender post is improved.

This utility model relates to the field of optocoupler lead cutting technology, and in particular to an optocoupler de-adhesive cutting and lead-removing block. By setting a relief surface with a specific projection relationship at the bottom of the upper cavity, when the optocoupler is raised due to impurities, the inclined or arc-shaped structure of the relief surface changes the contact point between the lead pin and the lead-removing block from vertical shearing to progressive contact. The setting of the relief surface forms a physical relief space, which significantly reduces the stress concentration of the pins at the optocoupler package and greatly reduces the damage rate of the optocoupler pins. By adding a waste groove on the bottom surface of the lower cavity, metal debris generated by lead cutting can be actively collected, which to a certain extent eliminates the factor of the optocoupler being raised. Combined with the complete fit design between the bottom surface of the lower cavity and the optocoupler, it can also ensure the support capacity of the optocoupler and reduce the deformation of the optocoupler bracket during the lead cutting process. It solves the technical problem that the optocoupler pins may be cut off by the lead-removing block when the existing lead-removing block positions the components.

The invention discloses a vertical contact surface assembly type sample box in-situ sample preparation device and method, the device comprises a reaction frame body, a rigid sample box, a horizontal fixing module and a vertical pressurizing module, the rigid sample box is movably arranged on the inner side of the reaction frame body, and the rigid sample box comprises an n-shaped frame, a lower pin and a convex bottom plate. The reaction frame body is constructed, and the vertical servo hydraulic loading device and the horizontal fixing device are additionally arranged on the reaction frame body, so that a rigid sample box is stably pushed, an n-shaped frame can vertically cut into a structural body, plugging is carried out under the cooperation of a convex bottom plate and a loading plate, a frame-shaped sample box is formed, and a sample is prepared; the cut-in sample is formed on the inner side of the closed frame-shaped sample box, so that the vertical shearing surface requirement of the in-situ vertical contact surface shearing test is met. The device solves the problem that the sample is difficult to cut and repair due to the fact that the vertical height of the sample is obviously larger than the horizontal width.

The present invention provides a formwork-free assembled energy-dissipating and shock-absorbing shear wall corner structure and connection method. The corner structure includes a vertical shear wall embedded formwork, with a set of horizontal shear wall embedded formwork symmetrically connected on both sides of the web of the vertical shear wall embedded formwork. Shear wall exterior panels are provided on the outside of all shear wall embedded formworks. The exterior sides of the vertical shear wall exterior panels and the exterior sides of the horizontal shear wall exterior panels are connected as a whole via angle steel. An energy-absorbing support member is provided between the two wings of the same angle steel. The interior sides of the vertical shear wall exterior panels and the interior sides of the horizontal shear wall exterior panels are connected as a whole via plug-in connectors. The exterior wall panels of the two horizontal shear walls are connected as a whole via the ends of the vertical shear wall embedded formwork. This invention solves the problem of connecting three prefabricated assembled shear walls without formwork, shortens the construction period, and improves the shear wall's bearing capacity, stability, and seismic performance.

The invention provides a multifunctional geosynthetic material direct shear pull-out test device which comprises a test rack, the top of the test rack is fixedly provided with a shear box temperature control box used for placing an upper shear box and a lower shear box and controlling the internal temperature of a box body, and the shear box temperature control box is connected with a refrigeration control system; a workbench for mounting the upper and lower shear boxes is arranged at the bottom in the shear box temperature control box; a vertical loading device for providing vertical shearing force is arranged right above the shear box temperature control box, and a horizontal loading device for providing horizontal shearing force is arranged on one side of the shear box temperature control box; the horizontal loading device and the vertical loading device are fixedly connected through a reinforcing inclined rod; a conveying roller way is arranged on the opposite side of the horizontal loading device, and the tail end of the conveying roller way is in butt joint with the freezing and thawing cycle test box body. The device can be used for performing an interface friction test between a geosynthetic material and a soil body, a direct shear friction test and a drawing friction test are integrated into one device, and a shear box temperature control box and a cooling liquid temperature control box are arranged at the same time to jointly adjust the temperature of a sample.

This invention provides a steel pipe helical pile and a method for determining its bearing capacity. The steel pipe helical pile includes: a pile body; multiple helical pile blades arranged axially around the pile body; and multiple overlapping blades arranged radially around the helical pile blades. The overlapping blades contract when the pile body is screwed into the soil in the forward direction, the pile body reverses direction after reaching a set depth, and the overlapping blades open and embed themselves into the foundation soil when the pile body reverses direction. The tensile and compressive bearing capacities of the steel pipe helical pile are determined based on the parameter data of the steel pipe helical pile, the horizontal earth pressure around the pile after the overlapping blades are unfolded, and the vertical shear force of the soil around the pile. This invention can form a more effective interlocking and embedding effect with the foundation soil, utilizing the bearing potential of the undisturbed soil, and significantly improving the compressive and tensile bearing capacities of the steel pipe helical pile without significantly increasing material consumption.

The invention relates to the field of cable production, and discloses electric wire production adjustable cutting equipment which comprises a base. A pay-off assembly; a positioning assembly; a traction assembly; a reciprocating motion assembly and a cutting assembly. By installing the reciprocating motion and cutting assembly, the second motor is started to drive the rotating disc to rotate, the circular shaft eccentrically arranged on the front side of the rotating disc does circular motion along with the rotating disc, the circular shaft is sleeved with the limiting frame, and the rotating motion of the rotating disc can be converted into the reciprocating linear motion of the rotating disc; when the toothed part of the half gear is meshed with the rack, the rack is driven to move on the T-shaped plate in the horizontal direction, so that the cutting assembly can do reciprocating motion, and when the cutting assembly and the electric wire are synchronous in speed, the hydraulic rod acts immediately to push the two cutters which are arranged in a staggered mode to be rapidly combined to conduct vertical shearing; therefore, friction and lateral extrusion force between the cutting edge of the cutter and the surface of the electric wire are reduced.

Provided in the present application are a resonator, a chip and an electronic device. The present application relates to the technical field of resonators. The resonator comprises a substrate, a piezoelectric layer stacked on the substrate, and a plurality of interdigital electrodes, wherein the substrate and the piezoelectric layer are stacked, the plurality of interdigital electrodes are located on the side of the piezoelectric layer facing away from the substrate, and the plurality of interdigital electrodes are arranged side by side in a first direction, the first direction being parallel to the surface of the substrate. The substrate comprises a first material, and the first material has a first shear wave velocity V01, where V01=max(max{VSH,VSV}), VSH being the horizontal shear wave velocity of the first material in any direction, and VSV being the vertical shear wave velocity of the first material in any direction; the substrate has a shear wave velocity V1 in the first direction, where V1=max{VSH_x,VSV_x}, VSH_x being the horizontal shear wave velocity of the surface of the substrate in the first direction, and VSV_x being the vertical shear wave velocity of the surface of the substrate in the first direction; formula (I) is satisfied. Thus, leakage of shear bulk acoustic waves into the substrate can be effectively inhibited, thus optimizing device performance.

Large diameter cylinder segment split body tooling, including the roller frame below the transversely arranged large diameter cylinder segment and the flange support at both ends of the large diameter cylinder segment, the flange support includes the bottom crossbeam perpendicular to the axis of the large diameter cylinder segment, and on the bottom crossbeam, with the central axis of the large diameter cylinder segment as the boundary, a set or more sets of bottom supports and a set or more sets of side supports are symmetrically arranged on the left and right, the side supports are located outside the bottom supports, and the top of the bottom support and the side support is provided with a connecting device corresponding to the connecting through hole of the end flange of the large diameter cylinder segment. The connecting device of the cylinder segment split body tooling is designed to be connected to the end flange through remote control, and the connecting device on the side support and the connecting device on the bottom are designed to be connected to the end flange through remote control. The connecting device is novel and ingenious, not only convenient to operate, but also effectively guarantees the advantages of high vertical shear force bearing capacity requirement of the connecting device, can effectively improve the work efficiency, and guarantee the safety.

The invention relates to a splicing structure of adjacent new and old main beam diaphragm plates for widening a bridge and a splicing method thereof, in particular to the technical field of bridge construction. The steel-UHPC combined diaphragm plate comprises the early-formed steel-UHPC combined diaphragm plate and the middle later-stage UHPC poured into the early-formed steel-UHPC combined diaphragm plate, the high tensile capacity of the steel plates and the steel bars and the ultrahigh strength of the UHPC are fully played, and adjacent new and old main beams of an existing bridge and an extended new bridge are temporarily spliced into a whole through the diaphragm plate; the requirements for transverse tension and vertical shearing of the spliced transverse partition plate are met, meanwhile, weak vertical rigidity and transverse rigidity are temporarily formed, and large transverse bridge deformation and vertical warping generated by concrete shrinkage creep difference after splicing are coordinated; the structure is simple, the design is reasonable, construction is convenient, the splicing time is shortened, the method can be widely applied to splicing of adjacent new and old main beam diaphragm plates of an existing bridge and an extended new bridge in a broadening and extension project, and the construction efficiency is improved.

The utility model relates to the technical field of wire cutters, in particular to a power supply electric power line laying project wire cutter which comprises a base, a vertical rack is fixedly connected to the right side of the top end of the base, a transverse top plate is fixedly connected to the top end of the rack, and clamping mechanisms are arranged on the two sides of the top plate and the base. And the cutter is movably arranged under the bottom end of the top plate, and a shearing mechanism is arranged between the rack and the cutter. According to the utility model, the lead screw transmission mechanism is matched with the guide groove for use, so that the vertical shearing motion of the cutter along an accurate track is realized, the problem of cable extrusion deformation caused by lack of a dislocation angle during shearing of a traditional parallel blade is solved, and the flatness and the cutting effect of a shearing surface are ensured.

The invention relates to the technical field of shock insulation supports, and discloses a one-way shearing vertical shock insulation support which comprises a vertical force transmission mechanism and a vertical energy dissipation mechanism, the vertical force transmission mechanism comprises a bearing platform plate used for force transmission and a connecting core column located at the bottom of the bearing platform plate, and a steel ring column is annularly arranged on the outer side of the connecting core column; a gap is reserved between the upper end of the steel ring column and the bearing platform plate, and the vertical energy dissipation mechanism comprises a plurality of layers of rubber ring columns and steel plate ring columns which are alternately arranged between the connecting core column and the steel ring column in the radial direction. And gaps are reserved between the upper ends of the rubber ring column and the steel plate ring column and the bottom surface of the bearing platform plate as well as between the lower ends of the rubber ring column and the steel plate ring column and the bottom surface of the steel ring column. Vertical vibration is transmitted to the vertical energy consumption mechanism through the vertical force transmission mechanism, so that vertical shearing deformation occurs, a part of energy is consumed, input energy is remarkably reduced, the effect of protecting equipment and instruments is achieved, and the long-term problem that a traditional rubber support cannot vertically insulate shock in the engineering field is solved.

The utility model provides a kind of shearing type crushing device, including the crushing cylinder of upper end opening, the vertical shearing column is rotatably connected in crushing cylinder, the inner wall of crushing cylinder is gradually inclined to vertical shearing column direction downward, the inner wall of crushing cylinder is connected with multiple vertical fixed shear strips and is circumferentially distributed, blanking gap is left between every two fixed shear strips, the outside of vertical shearing column is connected with multiple movable shear strips corresponding to fixed shear strip one to one, the lower end of crushing cylinder is connected with support cylinder, installation cylinder is arranged in support cylinder, driving motor for driving vertical shearing column rotation is installed in installation cylinder, the bottom of crushing cylinder is opened with multiple blanking holes that are circumferentially distributed between the inner wall of crushing cylinder and the outer wall of vertical shearing column, support cylinder is outwardly communicated with the discharge channel that is communicated with blanking hole.The utility model uses brand-new structure design, can realize the demand of quick crushing, and is applicable to stone and other hard material processing.

The present application relates to the technical field of power transmission line tower structure, and particularly relates to a single-anchor-bolt tower footing plate structure and a design method for uplift bearing capacity of the single-anchor-bolt tower footing plate structure, the single-anchor-bolt tower footing plate structure comprising a main material connecting part, a shoe plate, a tower footing plate, a stiffened plate and a single-anchor-bolt; the shoe plate and the tower footing plate are connected by welding of two adjacent edges to form a hinged constraint boundary, the hinged constraint boundary only transmits vertical shear force and does not transmit bending moment; the shoe plate converts the vertical uplift force into linear distribution force through the hinged constraint boundary and transmits the linear distribution force to the tower footing plate; the tower footing plate is plastically bent and deformed under the combined action of the linear distribution force and the concentrated counterforce provided by the anchor bolt, a plastic yield line failure mode is formed when the tower footing plate reaches the ultimate bearing capacity, the vertical uplift force is converted into the axial tension of the anchor bolt and transmitted to the foundation concrete. The present application realizes the single-anchor-bolt tower footing plate structure and the precise quantification of the uplift bearing capacity of the tower footing plate in a compact space by considering the hinged characteristics of the shoe plate and the influence of load eccentricity.

The invention belongs to the technical field of seepage prevention and water stop of soil retaining and enclosure structures, and discloses a precast concrete sheet pile water stop structure which comprises grooves symmetrically formed in the splicing faces of the left side and the right side of a sheet pile, and a main connecting piece and an auxiliary connecting piece are fixedly installed in the two grooves in butt joint through bolts correspondingly. The two clamping grooves are symmetrically formed in the left side of the inner cavity of the auxiliary connecting piece front and back. Through the cooperative design of the main connecting piece, the auxiliary connecting piece and the limiting mechanism, the relative movement of the two connected sheet piles in the vertical direction after pile sinking can be restrained, the height of the sheet piles after pile sinking can be conveniently kept consistent, the overall supporting rigidity is improved, and the water permeability is reduced; the problems that in the prior art, relative movement of the two connected prefabricated concrete sheet piles in the vertical direction after pile sinking is inconvenient to restrain, shearing dislocation in the vertical direction is likely to be generated between the adjacent sheet piles, the sheet piles are inconvenient to keep consistent in height after pile sinking, the overall supporting rigidity is likely to be reduced, and the water permeability is high are solved.

The invention relates to the technical field of tunnel engineering, and discloses a disease grading treatment method suitable for a vertical shear key of an existing immersed tunnel, and the method comprises the steps: firstly, building a dual evaluation standard combining quantification and qualification through combining a relative dislocation value of a pipe joint obtained through monitoring measurement and a physical state of a component obtained through visual inspection; diseases are scientifically divided into five grades from I to V. Then, specific and differentiated grading treatment measures are provided for different disease grades: the I-grade diseases are continuously monitored; iI, filling and grouting are adopted for reinforcing the foundation and replacing the invalid support for the III-level disease; and for serious diseases such as IV and V levels, pipe joints are lifted from the source by adopting a bottom plate grouting scheme so as to correct differential settlement, and damaged or invalid shear keys and supports are repaired or integrally replaced. According to the method, through accurate grading and targeted treatment, the scientificity and economical efficiency of repair decision making are remarkably improved, and the long-term stability of the treatment effect and tunnel operation safety are guaranteed.

The present application relates to the technical field of composite beam, in particular to a steel-concrete composite beam with embedded shear groove and a shear analysis method thereof.The present application comprises a concrete layer, the concrete layer is arranged with studs and steel bars in a matrix staggered manner, the studs are used for fixing the concrete layer with the lower steel beam, and the steel bars are used for fixing the concrete layer with the upper UHPC layer;the top surface of the concrete layer is embedded with a shear groove, which is used for enhancing the shear strength with the UHPC layer.The shear bearing capacity of the steel-concrete composite beam is analyzed from three dimensions, namely: taking the steel-concrete composite beam as the object, analyzing the vertical shear bearing capacity;taking the UHPC-concrete layer interface as the object, analyzing the longitudinal shear bearing capacity;taking the UHPC-concrete layer interface as the object, analyzing the interface longitudinal shear;comprehensively analyzing the results of the three dimensions, judging whether the theoretical shear bearing capacity of the designed steel-concrete composite beam meets the actual use requirements;respectively considering the contribution of each parameter to the shear bearing capacity, optimizing the design scheme.

This application relates to a glass fiber reinforced polyurethane composite door and window profile formed using an injection-impregnation pultrusion process, as well as its processing technology and application. This application relates to the field of composite materials technology and can be used in the construction field, such as the preparation of doors and windows. The polyurethane material in this application comprises components A and B, with the injection mass ratio of components A and B being 100:(60-100). Component A comprises liquefied MDI, and component B comprises: 100 parts flame-retardant polyether polyol, 2-10 parts 1,4-butanediol, 2-10 parts calcium oxide, 0.3-0.5 parts dimethylethanolamine, 0.5-0.8 parts azobisisobutyronitrile, 0.5-1.5 parts trimethylsiloxysilicate, and 0.1-0.5 parts silicone defoamer. The water content of component B is controlled to be no more than 0.05wt%. This processing method can increase the glass fiber pulling speed while reducing the impact of bubbles, improve the thermal stress concentration problem of the profile product, and further enhance the vertical shear strength of the profile.

The invention discloses a Bailey piece platform limiting structure for cast-in-place box girder construction and a construction method of the Bailey piece platform limiting structure, and particularly relates to the field of Bailey truss structures.The Bailey piece platform limiting structure comprises Bailey piece truss sets, an upper distribution beam and a lower supporting structure, and horizontal limiting pieces and vertical shear-resistant pieces are arranged between the Bailey piece truss sets; an adjustable limiting support is arranged between the bailey truss group and the upper part distribution beam; a base plate with a positioning groove is arranged between the beret piece truss set and the lower supporting structure, and the horizontal limiting pieces are H-shaped steel clamping plates, clamped between the adjacent beret piece vertical rods and fixed through high-strength bolts. Through the combined action of the horizontal limiting pieces and the vertical shear keys, the relative displacement between the beret pieces is effectively limited, and the overall rigidity of the platform is improved; the adjustable limiting support is convenient for adjusting the elevation of the platform, and meanwhile, reliable connection with an upper structure is ensured; the base plate positioning clamping groove realizes quick positioning and mounting, and the construction efficiency is improved; and all connecting pieces can be detached and reused, so that the construction cost is reduced.

The present application relates to a kind of high-sensitivity high durability vibration reduction isolation support, including pedestal, movable seat, vertical shear energy dissipation component;Vertical shear energy dissipation component includes multiple vertical stacked arrangement energy dissipation ring;Energy dissipation ring includes at least one side slide ring, side slide ring has two inclined surfaces symmetrically, and two inclined surfaces form arch at junction;Two inclined surfaces respectively abut on one sliding ring, and rubber layer is fixed between sliding ring inclined surface and side slide ring inclined surface;Vibration reduction isolation support is used as energy dissipation damper for use in energy dissipation vibration reduction engineering.The present application can generate greater interaction force between side slide ring and sliding ring when subjected to microseism / vibration, and rubber layer can generate more obvious extrusion shear deformation, so that the whole vibration reduction isolation support can generate more obvious vertical deformation, generate vertical vibration reduction isolation effect, and rubber layer can also generate considerable energy dissipation effect in extrusion shear deformation process, and has higher durability.

The utility model discloses a sectional type cross -shear production line's shearing mechanism belongs to cross -shear production line processing technical field, this sectional type cross -shear production line's shearing mechanism, including rectangular mounting bracket, the both ends of rectangular mounting bracket inside are all provided with first vertical hydraulic cylinder, and the output of first vertical hydraulic cylinder is fixed with vertical lifting column, and the inside of vertical lifting column is provided with detachable vertical shearing cutter, the fixed mode of vertical shearing cutter has been optimized, and the replacement of vertical shearing cutter can be completed without disassembling multiple bolts, sets up rectangular scraper on the both sides of vertical shearing cutter, can scrape off the metal scrap, oil dirt and other impurities adhered on vertical shearing cutter in the shearing process automatically, avoids the influence of impurity accumulation to shearing accuracy, reduces vertical shearing cutter wear and tear simultaneously, prolongs the life, and through the operation of air -blower, improves the heat dissipation efficiency of vertical shearing cutter surface.