157 results about "Vertical shear" patented technology

A vertical shear wall system including vertical metal framing members, for example, C-joists, U-joists, open web joists, or other metal frame systems that support a reinforced, lightweight, dimensionally stable SCP panel. The shear wall system is non-combustible, water durable, mold and rot resistant, termite resistant and is capable of resisting shear loads equal to or exceeding shear loads provided by plywood or oriented strand board panels. The panels employ one or more layers of a continuous phase resulting from the curing of an aqueous mixture of inorganic binder, for example, calcium sulfate alpha hemihydrate, hydraulic cement, an active pozzolan and lime. The continuous phase is reinforced with glass fibers and contains lightweight filler particles, for example, ceramic microspheres.

Methods and apparatus facilitating radial profiling of formation mobility are disclosed. Radial profiling of formation mobility aids in an optimal completion of a well for enhanced production. Some aspects of the present invention provide a technique for radial profiling of formation mobility based on inverting differences between a Stoneley radial profile of horizontal shear slowness and a dipole radial profile of vertical shear slowness for a reservoir interval.

The invention belongs to the structural engineering technical field, and more particularly relates to a structural system which cuts an energy-consumption steel plate wall in high level and vertically. The structural system consists of a wall, the two sides of which are connected with thin steel plates, which is taken as an energy-consumption component and other optional structural components; the system is provided with a steel plate wall which is connected with the two sides of a column in a run-through way in a certain intermediate span, and the steel plate wall is used in vertical cutting energy-consumption when the structure suffers from dynamic action such as earthquake or oscillating wind, etc. The horizontal anti-lateral force system of the structure can be the system of frame support, a frame steel plate wall, a frame combined wall, a concrete shear wall and a concrete shear cylinder, etc. The wall, the two sides of which are connected with thin steel plates, refers to the steel plate wall, the two sides of which are connected with the column or the wall; the structural system which cuts an energy-consumption steal plate wall in high level and vertically which is provided by the invention is a multiple high-level structural system which is suitable for an earthquake region; has the advantages of definite failure mode, high bearing capacity, large anti-lateral stiffness, concentrated damage and being convenient for reparation, etc.; has good earthquake-resistance performance and good capacities of tensibility and hysteresis energy-consumption; therefore, the structural system which cuts the energy-consumption steel plate wall in high level and vertically is a superior anti-earthquake and energy-consumption component.

The invention discloses a sea wind resource evaluation method based on a WRF mode. The sea wind resource evaluation method based on the WRF mode mainly comprises the steps of obtaining WRF numerical value weather forecast data and anemometer tower data, building a vertical shear model of wind, building a wind speed probability model, evaluating air density and evaluating wind power density and annual energy output. The sea wind resource evaluation method based on the WRF mode evaluates sea wind resources through the WRF numerical value weather forecast data, and effectively overcomes the defect that a traditional wind resource evaluation technology is low in accuracy.

The invention relates to a multifunctional ring shear apparatus, which is applicable to measuring shear resistance of granular materials such as soil, stones and the like and volume change of the granular materials during shear. The multifunctional ring shear apparatus mainly comprises a main unit, a hydraulic lifting system, a rotary power system, a measuring system, a frame and the like, wherein the main unit, the rotary power system, the hydraulic lifting system and the measuring system are respectively fixed onto the frame, and the main unit comprises a shaft, an upper shear box, a lower shear box, a bearing flange and the like. A ring shear box provides a horizontal shear mode, a vertical shear mode and different roughness conditions, bulk granular materials such as the soil, the stones and the like flow in the ring shear box, the shear force of sheared surfaces of the granular materials is measured during flowing, and the ring shear box can be replaced in use. The multifunctional ring shear apparatus can be used for accurately measuring volume control, vertical pressure control, shear rate control, the shear force, shear rate, the volume change, pressure and the like of action objects.

A center beam car has a main deck structure extending laterally from a main center sill, a laterally extending top truss structure, and a central vertically oriented web work structure for carrying vertical shear loads between the top truss and the center sill and decking. The center beam so formed defines bunks upon in which to carry cargo. The upper region of the web-work structure includes a deep upper beam structure that has downwardly extending skirts. The skirts provide an extended bearing area upon against which bundled loads can be secured. The skirts are inwardly reinforced to discourage deflection between adjacent upright members of the deep upper beam structure.

A corrugated washer for use with a corrugated L-foot mounting bracket and a structural mounting rail prevents vertical shear at the joint between the rail and the corrugated L-foot bracket when mounting photovoltaic modules (i.e., solar panels) to a roof of a building or other structure. The design locks the T-bolt from falling off the rail slot, and always aligns the T-bolt in the correct orientation and prevents back-rotation. The corrugations on the washer and L-foot help for making height adjustments, too.

The invention relates to construction of high-rise buildings and a superimposed pouring procedure of a high-rise building transfer floor beam plate, which comprises the following steps: pouring column concrete and wall concrete at the lower part of the transfer floor to a beam bottom; setting up a beam plate bottom die of the transfer floor and installing the bottom die; binding bottom-layer horizontal steel mesh reinforcement of the first layer of concrete of a transfer floor plate and surface course hogging moment steel mesh reinforcement of the first layer of concrete; installing a side form of the first layer of concrete; installing a shear-resisting key groove die plate; bonding additionally arranged vertical shear reinforcement between every two layers of transfer floor beam plates; carrying out pouring, hydrating, heat preservation, maintenance and surface treatment on the first layer of concrete; bonding constructional steel bar of the second layer of concrete of the transfer floor beam plates; installing the side form of the second layer of concrete; bonding shear wall joint bars at the upper structure of the transfer floor; disassembling the bottom die and the support when strength of the first layer of concrete reaches the design strength; carrying out pouring, hydrating, heat preservation and maintenance on the second layer of concrete. With the method of the invention adopted, construction cost can be reduced, construction quality can be improved and construction period can be shortened.

The invention relates to a small waterplane double-hull wave load test model design and test method. Models which are consistent with the weight distribution, geometric similarity and motion similarity of all sections of a real ship are manufactured, the models are subjected to segmentation processing, a measuring beam frame is arranged, and through load collection and analysis calculation of strain gauges on the measuring beam frame, ship motion state parameters and main loads borne by the ship body are accurately obtained. The method can be used for measuring data of six-degree-of-freedom motion and acceleration of a small waterplane catamaran model in waves and for measuring seven key wave load values such as vertical wave bending moment and shearing force, vertical shearing force of amiddle longitudinal section, transverse opposite opening force and transverse wave bending moment, horizontal torque and overall asynchronous pitching torque. The method has very important significance in mastering wave load characteristics of the type of ship and determining reasonable structural design loads.

The invention discloses a single station wind profile radar-based wind shear identification and tracking method. The method comprises establishing a wind profile radar wind shear tracking system including a data acquisition module, a data preprocessing module, a wind shear identification module and a wind shear tracking module; allowing the data acquisition module to acquire wind profile radar detection data; allowing the data preprocessing module to perform quality control on the wind profile radar detection data; allowing the wind shear identification module to perform wind shear automatic detection and identification; and allowing the wind shear tracking module to realize wind shear automatic tracking and warning. The inventive method has simple and easy implementation, high identification accuracy and full automatic operation, can obtain horizontal wind vertical shear information and vertical wind vertical shear information, and effectively detects and tracks wind shear start time, height and strength in the air above the station.

The invention discloses a non-damage stiffness-adjustable prefabricated frame beam and column connection structure and a construction method thereof. The non-damage stiffness-adjustable prefabricatedframe beam and column connection structure comprises a prefabricated reinforced concrete column and a prefabricated beam which are connected; a pin joint device which enables the beam end of the prefabricated beam to vertically and freely rotate relative to the prefabricated column is fixed between the center of the beam end face of the prefabricated beam and the prefabricated column; the pin joint device is a vertical shear-resisting connecting lug plate set, and a pin joint shaft is arranged on the shear-resisting connecting lug plate set in a penetrating mode; and the pin joint shaft is located in the middle of a reserved gap between the reinforced concrete column and the prefabricated beam. Compared with the ideas of bending and shearing separation, strong shearing and weak bending, and bending shearing elasticity, a pre-embedded piece capable of being accurately positioned is prefabricated in a factory through a fabricated structure, processing is convenient, on-site mounting of the structure is easy and convenient, the mounting efficiency is improved, the economic feasibility is achieved, and the performance cost ratio is high; and structural steel bars are completely disconnected, the steel bar overlapping problem is avoided, and the advantage of convenient construction is achieved in the real sense.

The invention relates to a ring shear test instrument suitable for a vertical shear surface. The ring shear test instrument comprises a shear box, a lifting system, a power rotating system, a monitoring and controlling system and a frame. In the shear box, shear plates are evenly fixed to an annular bottom plate in the radial direction of the annular bottom plate, and a shear box outer cover is buckled to the annular bottom plate and the shear plates in a covering mode and is assembled and fixed to the annular bottom plate through guide bars and guide grooves; the shear box outer cover is connected with a rotating force arm of the power rotating system to transmit torque, a coupling shaft pressing plate is embedded in a center hole of a top plate of the shear box outer cover in a centered mode and is driven by the lifting system to conduct normal force loading, the annular bottom plate is embedded in a cylindrical supporting platform in a centered mode, and an inner cylindrical side face generated when the annular bottom plate drives the shear plates to conduct circular motion under the action of rotating torque is a vertical shear surface. The ring shear test instrument can ensure that shear displacement and shear stress on the shear surface are uniformly distributed, the thickness of the vertical shear surface is not limited, and thus a large ring shear test in the presence of large particulate matter is realized.

A center beam car has a main deck structure extending laterally from a main center sill, a laterally extending top truss structure, and a central vertically oriented web work structure for carrying vertical shear loads between the top truss and the center sill and decking. The center beam so formed defines bunks upon in which to carry cargo. The upper region of the web-work structure includes a deep upper beam structure that has downwardly extending skirts. The skirts provide an extended bearing area upon against which bundled loads can be secured. The skirts are inwardly reinforced to discourage deflection between adjacent upright members of the deep upper beam structure.

A leg support that attaches to a user's upper leg and extends below the user's foot, where stepping on the portion below the user's foot causes the portion around the user's upper leg to tighten. This allows the leg support and the user's upper leg to bear the user's weight with the user's foot remaining untouched. When the user takes his or her weight off of the leg support, the portion around the user's upper leg loosens for the user's comfort. The leg support insures that there is zero pressure on the bottom of the user's foot and all of the user's weight and vertical shear pressure is converted into horizontal compression pressure around the user's thigh, while the user's center of gravity remains in a position that allows upright balance to be maintained.

The invention discloses a device and a method for simulating propagation of reflective cracks of a semi-rigid-base asphalt pavement. The device comprises an environmental cabinet, a reflective crack simulating platform, a reflective crack testing system and an acquisition control system, wherein a pedestal is arranged at the bottom of the environmental cabinet; and the reflective crack testing system comprises a horizontal open-type reflective crack testing module and a vertical shear-type reflective crack testing module. The device not only can simulate open-type reflective cracks in the horizontal direction, but also can simulate shear-type reflective cracks in the vertical direction, and can really simulate occurrence and the propagation of the actual reflective cracks of the semi-rigid-base asphalt pavement, so that a reference basis is provided for selecting an anti-cracking material and an anti-cracking structure in pavement structure design.

The invention discloses a steel-concrete combined conversion girder which relates to a conversion structure used in tall buildings and skyscrapers. The combined conversion beam consists of a steel box girder, concrete poured on the top of and in the steel box girder and a shearing resistant connector. Concrete is poured on the upper part inside the steel box in the span-center bending moment area to solve the problem of the insufficient pressing area of concrete on the top of the steel box girder; concrete is not poured on a lower part inside the steel box in the span-center bending moment area, which effectively reduces the self-weight of the structure. Concrete is poured in the steel box at the girder end to keep the stability of the steel girder and to increase the vertical shearing resistant capability and the stiffness of the structure. The shearing resistant connector combines the steel girder with concrete and transfers the shearing force between the steel girder and concrete and prevents the steel girder from separating from concrete. The combined conversion girder provided by the invention is light and can save moulding boards and scaffolding; the construction of the combined conversion girder is convenient and can avoid the problem of the crack of the concrete in the span center; meanwhile, the combined conversion girder has higher stiffness and loading capacity, particularly has higher shearing resistant loading capacity at the girder end. The combined conversion girder has wider application perspective in tall buildings and skyscrapers.

A center beam car has a main deck structure extending laterally from a main center sill, a laterally extending top truss structure, and a central vertically oriented web work structure for carrying vertical shear loads. The center beam so formed defines bunks upon in which to carry cargo. The upper region of the web-work structure includes a deep upper beam structure that has downwardly extending planar surfaces. The surfaces provide a bearing area against which bundled loads can be secured. The surfaces are inwardly reinforced to discourage deflection between adjacent upright members of the vertical web work.

The invention discloses a bridge ductility anti-earthquake structure easy to replace after an earthquake. The bridge ductility anti-earthquake structure is composed of a foundation and anti-earthquakechock blocks, wherein the foundation and the anti-earthquake chock blocks are relatively independent; the anti-earthquake chock blocks are arranged on the upper side surface of the foundation; and the anti-earthquake chock blocks are connected with the foundation through a plurality of vertical shear reinforcements. Based on the above-mentioned structure, the invention also discloses a corresponding construction method. The bridge ductility anti-earthquake structure easy to replace after the earthquake and the construction method, disclosed by the invention, have the following beneficial technical effects: the deformation quantity of the bridge ductility anti-earthquake structure is larger, so that the transverse displacement of a girder can be better limited; after the anti-earthquake chock blocks are damaged, the damage to the foundation is less; and the anti-earthquake chock blocks are relatively convenient to replace, thereby being favorable for repairing in rescue and relief works after the earthquake.

The invention provides a steel elastomer lattice beam type section steel bridge expansion device. The device comprises two side beams located at both sides of an expansion joint, at least one middle beam and at least two joist beam sets; the middle beams and the joist beam sets are fixedly connected, the two ends of each joist beam set are fixed to the two sides of the expansion joint through a sliding pressure bearing support base and a movable steel ball support base respectively, each middle beam is connected with the side beam exactly opposite to the middle beam or another middle beam through waterproof adhesive tape, gusset plates are vertically fixed below each side beam and below each middle beam, and every two adjacent gusset plates are connected through a steel plate spring elastomer. By means of the device, on the one hand, the multi-directional displacement requirement of a bridge can be met, and the stability and the binding property are very good; on the other hand, the gusset plates are connected by the steel plate spring elastomers, the service life is long, the steel plate spring elastomers jointly decompose the expansion and contraction amount of the bridge, partial horizontal force borne by the middle beams can be balanced, the vertical shear force is transmitted, and the synchronism is good.

The invention relates to a test device for large deformation shearing seepage of a contact surface and a use method thereof. The test device comprises a base, a contact panel, a sleeve, a top cap and sealing films, wherein a deep slot is formed at the top of the base; two side faces of the middle part of the contact panel are in tight contact with soil samples; a mounting hole is formed at the center of the sleeve; the top cap is supported at the top of the sleeve; the sealing films are used for wrapping the peripheries of the base, the soil samples on the two sides of the contact panel, the sleeve and the top cap; a seepage water draining pipeline parallel to a shearing surface direction and a seepage water draining pipeline vertical to the shearing surface direction are arranged in the base; the contact panel is arranged in the deep slot through the lower part; the cross sectional dimension of the contact panel is smaller than the cross sectional dimension of the deep slot; the sleeve is sleeved on the part of the upper part of the contact panel, higher than the soil samples, through the mounting hole; the cross sectional dimension of the mounting hole is greater than the cross sectional dimension of the contact panel; a piston rod hole is formed at the center of the top cap; a piston rod penetrates through the top cap and directly acts on the contact panel; a seepage water feeding pipeline parallel to the shearing surface direction and a seepage water feeding pipeline vertical to the shearing surface direction are arranged on the top cap.

The invention provides a wind power prediction method considering the wake effect. The method is characterized by comprising the following steps that (1) spatial difference is performed on NWP wind speed data by adopting an inverse distance method according to spatial distribution consistency of wind speed so that wind speed (the expression is described in the specification) of x is obtained, wherein (the expression is described in the specification) x refers to spatial coordinates, x refers to the spatial coordinates of the sampling position i, u(x) refers to the wind speed data of the sampling position i, lambda refers to the weight of the sampling position i, and l refers to Euclidean distance; (2) height difference of wind speed is realize by using the law of wind vertical shear power so that wind speed v<2>=v<1>(h<2>/h<2>)<alpha> of height h<2> is obtained, wherein alpha is a vertical wind shear index, v(2) is wind speed of height h<2>, and v<1> is wind speed of height h<1>; (3) wind speed of an actual operation blower is obtained according to a wake model and blower position data; and (4) corresponding power of the blower is obtained according to the wind speed-power curve of the actual operation blower. The wake effect and the wind speed-power curve of the actual operation blower are fully considered so that accurate prediction of wind power can be realized.