319 results about "Horizontal shear" patented technology

The invention relates to a structural three-dimensional shock isolation and anti-overturning device. The main body mechanism of the device is formed by connecting a laminated rubber shock isolation support and a spring shock isolation support in series, and an upper connecting plate and a lower connecting plate are respectively arranged on the upper and lower sides of the main body mechanism. The device is characterized in that: a tensile steel wire rope uniformly distributed on four sides of the main body mechanism is arranged between the upper connecting plate and the lower connecting plate, and the limit deformation of the tensile steel wire rope in the horizontal direction is greater than the horizontal shearing elastic deformation of the main body mechanism. Through the device, the tensile strength of a common three-dimensional shock isolation device is improved, and swing of a high-rise building in an earthquake and even huge tension generated by overturning are resisted; meanwhile, because external tensile steel wire ropes are adopted, the device is convenient to mount and replace and has lower replacing expense.

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.

A direct shear tester for both portable field test and indoor test and a sampling and testing method are provided. The tester comprises a sampling device, a portable vertical load system and a horizontal shear system. The testing method comprises burying a rigid frame together with a cruciform shear frame in the soil of a place to be test, digging out the whole soil containing the rigid frame and the cruciform shear frame to obtain an integrated sample with less interference, placing and fixing the integrated sample in a rigid frame base on a box-shaped frame, applying a vertical force by using the portable vertical load system on the box-shaped frame, and measuring the strength of the sample by using the shear frame. During the test process, the volume change of the sample in the vertical direction is not limited. The tester has simple structure, easy operation and good portability. The testing method employs flexible tension shear mode instead of the rigid top-bunt shear mode, overcomes the friction and sampling problems, and avoids the vertical pressure offset during the test process by using the portable vertical loading system, thereby increasing the test accuracy.

A prestressed or post-tensioned composite structural system for bridge floors, road beds, pedestrian walkways, building floors, building walls, or similar structural elements. The structural system comprises a composite structure comprising an unfilled grating as a base component, and a prestressed, post-tensioned reinforced concrete slab as a top component. The base grating component is preferably a plurality of main bearing bars without any distribution bars or tertiary bars. The upper portions of the main bearing bars are embedded in the concrete component permitting horizontal shear transfer and creating a composite deck structure which maximizes the use of tensile strength of steel and the compressive strength of concrete.

The invention discloses a gauge for three directional deformation of a ground fissure. The gauge comprises two vertical uprights which are respectively fixed at the left side and the right side of theground fissure, a horizontal tension displacement testing device which is fixed between the two vertical uprights, a vertical displacement testing device and a horizontal shear displacement testing device which are arranged on one of the vertical uprights, a data analysis system and an alarm unit controlled by the data analysis system; the vertical displacement testing device comprises a verticalslide block and a vertical line displacement sensor; the horizontal tension displacement testing device comprises a horizontal support slide shaft, a horizontal support bar, a horizontal slide blockand a horizontal line displacement sensor; the horizontal shear displacement testing device is an angular displacement sensor; and the horizontal line displacement sensor, the vertical line displacement sensor and the angular displacement sensor are connected with the data analysis system. The gauge has the advantages of convenient installation and debugging, convenient use and operation, high testing precision and good testing effect, and can synchronously detect absolute values of three directional deformations at the same point of the ground fissure.

A vehicle apparatus comprises a slider body having a substantially vertical slide slot and a substantially horizontal shear pin. The slider body further includes a headlamp mounting section and a hood bump-stop mounting section. An adjustable bumper is received by the hood bump-stop mounting section with an adjustable height. A reinforcement member is configured to be fixed with respect to a grille opening of the vehicle. The reinforcement member has a bore aligned with the slide slot for receiving a fastening pin and an aperture receiving the shear pin. A force greater than a predetermined force applied to the adjustable bumper results in the shear pin breaking off in the bore and the fastening pin sliding along the slide slot as the slider body moves downward.

The invention relates to a testing device for vertical cyclic compression-lateral swing shearing dynamic loading. The testing device comprises a peripheral frame, a model case arranged in the peripheral frame, a loading unit for loading the model case and a data acquisition unit for acquiring testing data of a soil test sample in the model case, wherein the soil test sample fills the model case; the loading unit comprises a vertical dynamic load actuator which applies a vertical dynamic load, a lateral swing dynamic load actuator which applies a lateral swing horizontal shearing dynamic load and a lateral pressure loading unit which controls a confining stationary load of the model case. Compared with the prior art, the device provided by the invention can independently apply a horizontal rotating cyclic dynamic load to realize cyclic shearing dynamic load, and can be independently loaded or coupled with the vertical cyclic dynamic load. Moreover, the device is simple in structure, easy to assemble and detach and simple and convenient to operate in the experimental process.

The invention discloses a combined dynamic triaxial dynamic simple shear pressure chamber system capable of measuring radial strain of a soil sample, and belongs to the geotechnical engineering test device technical field. The sample (8) is mounted in a water pressure chamber through sample cover bodies (6) having a drainage function; an axial loading system comprising an axial servo electrical controller (20), an axial piston rod (21), an axial pressure sensor (19) and an axial displacement sensor (2) applies an axial pressure on the top of the sample (8); a horizontal loading system comprising a horizontal servo electrical controller (17), a horizontal piston rod (13), a horizontal pressure sensor (15) and a horizontal displacement sensor (14) applies a horizontal shearing force on the bottom of the sample (8). On the basis of a conventional combined dynamic triaxial dynamic simple shear apparatus, the radial strain of the soil sample under action of the axial and horizontal load is measured simultaneously. Universality of the combined dynamic triaxial dynamic simple shear apparatus is improved, and measured data is accurate.

The invention discloses a shear creep tester which comprises a testing bench, a shear box arranged on the testing bench and formed by lower and upper shear box portions, a bearing cover arranged on the top of the shear box, a pressure sensor arranged on the bearing cover, and a tension sensor connected with one side of the upper shear box portion. The pressure sensor is connected with a vertical pressure loading pulley block by a transmission frame. The lower shear box portion is connected with a horizontal shear loading pulley block by a traction rope. The moving end of the traction rope, bridging the vertical pressure loading pulley block and the horizontal shear loading pulley block, is connected with a counterweight. The invention has the advantages of reasonable design, simple, flexible and practical structure of pulley block, high test accuracy, stable performance, and convenient operation.

A shoe sole is described that provides both cushioning and stability. The sole has a plurality of layers, including a transition layer which allows relative motion between the layers adjacent to the transition layer. The relative motion between the layers of the sole reduces the impact of horizontal shear stresses on the wearer's feet and ankles. One such transition layer includes pliable material and deformable holes within the pliable material. Another transition layer includes at least two rigid plates held together by less rigid grommets or sidewalls. The transition layer may be disposed beneath the entire shoe or only portions of the shoe, with either a more conventional sole structure or rigid support members completing the sole.

A vibratory concrete screed includes a vibration isolation system that minimizes the transmission of vibrations to the operator under normal operating conditions, but becomes more rigid during screed control forces applied to the blade through the isolation system when the operator applies greater forces to the operator handle. The system includes low durometer elastomer vibration isolators isolating the operator handle from the vibration exciter and screed blade in a manner that limits vertical compressive movement of the isolators, yet permits substantially greater horizontal shear movement to effectively isolate the operator from vibration. The isolator mounting arrangement also includes retainers that engage the isolator to limit the amplitude of horizontal shear movement when the operator applies a greater control force to the operator handle.

The invention discloses an in-situ test device and method for testing the shear strength and long-term creep deformation of a rock sample. A test platform is cut in a region where the surrounding rockis located, and a shear rock sample, a flat surrounding rock surface and an upper surrounding rock are arranged on the surrounding rock; a horizontal shear box is arranged at the top of the flat surrounding rock surface and on a side of the shear rock sample; a horizontal shear device is arranged between the horizontal shear box and a side wall of the shear rock sample; a vertical load loading box is arranged on the lower end surface of the upper surrounding rock, and a vertical shear device is arranged between the lower end surface of the vertical load loading box and the shear rock sample;the horizontal shear device and the vertical shear device are of the same structure, and are powered by expanded cement slurry. The self-expansion property of the expansion agent is innovatively usedto provide a load source for in-situ shear test on site, and the expansion load is transmitted to the on-site rock sample through a loading probe of a dumbbell-shaped shear rod by means of expansion force generated by the expanded cement slurry to measure a shear strength index on a specific shear plane.

The invention discloses a rubber spring seismic reduction and isolation system of a bridge. The rubber spring seismic reduction and isolation system comprises a capping beam and a beam body. The two ends of the capping beam extend upwards to respectively form a stop block, a plurality of sliding friction supporting bases are arranged on the top face of the capping beam between the two stop blocks, the beam body is stacked above the capping beam through the sliding friction supporting bases, gaps are reserved between the beam body and the stop blocks on the two sides, the gaps are filled with spring rubber self-reset cushion blocks, the spring rubber self-reset cushion blocks are rubber blocks with springs arranged inside, and the two ends of each spring are connected to the beam body and the corresponding stop block respectively. The rubber spring seismic reduction and isolation system meets the requirement for seismic reduction and isolation, for horizontal shear displacement in the transverse direction of the bridge generated by an earthquake in the earthquake generation process, the horizontal shear displacement influence of the earthquake on the beam body can be effectively reduced, the rubber spring seismic reduction and isolation system has good self-reset capacity, post-seismic residual displacement is obviously reduced, and safety and comfort degree for driving on the bridge are effectively improved.

The invention discloses an electro-osmosis consolidation shearing device. The electro-osmosis consolidation shearing device comprises a frame, a vertical loading system, a horizontal shearing loading system and an electric insulation experiment box, wherein the frame comprises a bottom frame and a portal frame; the bottom frame is fixedly connected with the portal frame; the vertical loading system is fixedly connected to the upper wall of the portal frame, and comprises a shaft pressure air cylinder, a shaft pressure displacement electronic sensor and a shaft force sensor; the electric insulation experiment box comprises electrode tubes, an upper shearing box and a lower shearing box; during an electro-osmosis experiment, soil is placed in the upper shearing box and the lower shearing box, and the electrode tubes are inserted into the soil. The electro-osmosis consolidation shearing device is high in experiment efficiency, small in occupation area, convenient to operate, compact in structure, accurate and reliable in determination result, and applicable to an indoor or field experiment for the electro-osmosis test on soft clay and mucky soil in eastern coastal regions and the Pearl River Delta region, and serves for solving the related engineering problems of foundation deformation and stability parameter determination in geotechnical engineering problems of foundation treatment, coastal reclamation, port revetment and the like.

The invention provides an annular shearing experiment equipment and a testing method, the annular shearing experiment equipment includes a support seat, a shear box assembly located on the support seat, and a load applied to soil samples in the shear box assembly The loading device, the loading device includes a vertical vibration loading device and a horizontal shear vibration loading device, and the annular shear experimental equipment further includes a load control device for controlling the loading of the vertical vibration loading device and / or the horizontal shear vibration loading device. device. The vertical vibration loading device and / or the horizontal shear vibration loading device can apply vibration loads of different frequencies and amplitudes, which is beneficial to study the influence of dynamic loads on soil strength parameters, more conducive to simulating the actual stress situation, and conducive to revealing The stress changes, pore water pressure changes, local soil damage and liquefaction phenomena occurred during the shear test of the soil under the action of vibration loads, and then reveal the occurrence and movement mechanism of geological disasters such as landslides from the mechanical properties.

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.

In an embodiment of the disclosure, there is provided a strain isolation layer assembly. The assembly has a rigid solar layer; a strain isolation layer having a discontinuous configuration, a vertical rigidity, and a horizontal shear flexibility; and an underlying substrate layer. The strain isolation layer is coupled between the rigid solar layer and the underlying substrate layer to form a strain isolation layer assembly, such that the strain isolation layer isolates the rigid solar layer to reduce one or more strains induced on the rigid solar layer.

The invention provides a prefabricated assembled type steel-concrete combined beam connected through studs. The prefabricated assembled type steel-concrete combined beam connected through studs comprises an H-shaped steel beam which is formed by welding steel sheets, and shear bolt nails are welded to the upper wing edge of the steel beam; the prefabricated assembled type steel-concrete combined beam further comprises a prefabricated reinforced concrete floor, and through holes corresponding to the steel beam in position are reserved in the floor. After the steel beam and the prefabricated reinforced concrete floor are hoisted and docked, non-shrinkage self-compacting high-intensity concrete filler is poured into the holes, and integrated connection between the steel steam and the reinforced concrete floor is achieved. Good adhesion between the non-shrinkage self-compacting high-intensity concrete filler and the bolt nails is achieved, the bolt nails can have good horizontal shear resistance and drawing force resistance, and meanwhile the whole structure has good ductility and anti-seismic property. According to the prefabricated assembled type steel-concrete combined beam connected through studs, all components are prefabricated in a factory, assembling and connection are conducted at a construction site, site wet operation is reduced, project quality is guaranteed, the construction cycle is shortened, the assembling efficiency of building industrialization is improved, and social and economic benefits are good.

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 discloses a precast concrete component butting method and a precast concrete component butting method applying the butting structure. The precast concrete component butting structure comprises a first step of installing an inserting and connecting anchor bar and a joint bar preformed hole at the butting end of a component, and a second step of pre-casting a plurality of embedded parts on the side face of the butting end. In the process of combining and butting, the precast concrete component provided with the joint bar preformed hole is plunged to the ground, epoxy resin mortar is poured into the joint bar preformed hole, the inserting and connecting anchor bar of the precast concrete component is completely inserted into the joint bar preformed hole filled with the epoxy resin mortar. A connecting piece is used for being connected with the embedded parts in a butting mode to enable the component to have a good butting structure. Due to the fact that the environment-friendly and non-toxic epoxy resin mortar serves as an antiseptic adhesive agent, the epoxy resin mortar at the connector position is plunged to the ground to be solidified after the butting is finished, compared with a traditional precast concrete component butting method, the novel precast concrete component butting structure is high in construction speed, and antiseptic property, anti-pulling property and anti-horizontal shear of the precast concrete component at the connector position are improved.

A construction method for a lattice steel column tower crane base seat comprises: disposing four bored piles at the cutting position before cutting earth underground, pouring pile steel bar cage welded with a lattice steel column composed of a angle steel and a batten plate into the bored piles, disposing a conversion bearing steel plate on the top of a lattice steel column, disposing a tower body base section on the conversion bearing steel plate, disposing a tower body on the tower body base section, cutting earth among and around the four lattice steel piles, welding a horizontal shears supporting rack and a vertical shears supporting rack among the lattice steel piles when earth of each 1-3 meter depth is cut, and connecting four lattice steel columns by using a connection platform under the foundation pit bottom plate after the foundation pit is cut. The construction method has strong applicability, and is especially adapted to conditions that a hanging tower can not be disposed in a cut foundation pit by the restriction of ground or the hanging tower must be disposed and used at the foundation pit position before starting to cut the foundation pit. The lattice hanging tower constructed according to the invented method has a stable and sage base seat structure.

A device for measuring action force of a wheel includes a vehicle axle upon which the wheel is mounted, the vehicle axle having a stress neutral line, and a stress detecting sensor having at least one strain gauge. The stress detecting sensor is disposed within the vehicle axle so as to detect at least one of a horizontal shear stress and a vertical sheer stress with the at least one strain gauge being one of aligned with or proximate the stress neutral line thereby permitting substantial removal of axle torque influence from an output of the stress detecting sensor. A signal processing circuit processes the output of the stress detecting sensor.

The invention discloses a piezoelectric transducer capable of omnidirectionally exciting and receiving horizontal shear wave, and a preparation method thereof. According to the present invention, a piezoelectric ceramic ring is polarized along a thickness direction and is equally divided into 2n fan-shaped bodies, electrodes are prepared on the side surfaces of the fan-shaped bodies, a ring is reconstructed, the polarizing directions of adjacent transducer subunits are opposite, and the piezoelectric transducer with characteristics of polarizing along the thickness direction, direction alternating and reversing, circumferential electric field applying, and omnidirectional SH0 wave exciting and receiving is formed; various transducer subunits are taken from the same piezoelectric ceramic ring, such that the difference of the polarization degree, the electromechanical coupling coefficient and other material parameters can be ignored so as to ensure the uniformity of the transducer along various directions; the polarization process along the thickness is far more simple than the circumferential polarization; compared to EMAT and MPT, the piezoelectric transducer of the present invention has advantages of high energy conversion rate, strong signal and strong anti-interference ability; and the piezoelectric transducer of the present invention has the strong practical value, and is suitable for the plate detection ultrasonic guided wave detection.

The invention discloses a reinforcing method for improving a bend and shear bearing capacity of an independent foundation, belonging to the technical field of structural reinforcement. The reinforcing method comprises the main steps of: scabbling the surface of concrete of a connection beam and the independent foundation; forming holes on the upper surface of the independent foundation and planting reversed-U-shaped reinforcing steel bars which enclose the connection beam; forming holes on the surface of a column, planting horizontal shear reinforcing steel bars and binding the reinforcing steel bars; coating an interface agent on the scabbled concrete surface, supporting a mould and casting the concrete so as to finish the reinforcement of the independent foundation. The reinforcing method provided by the invention utilizes less reinforced concrete to integrally connect the previous independent foundation with the connection beam to form a new independent foundation, so that the punching shear capacity of the independent foundation is improved and the distance from a plate bottom reinforcing steel bar to the center of a resultant force point of the concrete is enlarged; and furthermore, the bend bearing capacity of the independent foundation is improved. The reinforcing method provided by the invention has the advantages of simplicity in construction and material saving, and can be widely applied to the reinforcement and reconstruction of the independent foundation with the connection beam under the column.

The invention provides an aluminum plate horizontal shearing machine, and relates to the technical field of aluminum material production equipment. The aluminum plate horizontal shearing machine comprises an uncoiling device, a feeding device, a cutter device, a conveying device and a stacking device which are sequentially arranged. The aluminum plate horizontal shearing machine is characterized in that a detection device is arranged between the cutter device and the conveying device, the detection device is in communication connection with a sorting device, the detection device comprises a detection frame, a light emitting source which is horizontally arranged in the direction perpendicular to the plate conveying direction is arranged on the detection frame, the light emitting source is equal to plates in width, a receiver which is equal to the light emitting source in width is arranged below the light emitting source, and the receiver is in communication connection with the sorting device. When the detection device detects that holes exist in the surface of the plates, the sorting device is directly controlled to work, the waste plates with the holes are pushed down from the conveying device, it is guaranteed that the plates conveyed to the stacking device through the conveying device are qualified finished plates, thus, manual sorting is not needed, the production quality ofthe plates can be guaranteed, and the labor intensity of workers is effectively reduced while the processing efficiency of the plates is guaranteed.

The invention is a rigid connecting method of steel girder and concrete pier, a combined structural form of steel girder and reinforced concrete pier by using high-strength bolts, and the method is the rigid joint is arranged on the top of the reinforced concrete pier; the two sides of the top of the reinforced concrete pier are arranged in the vertically axial direction of a bridge with a pier-part bending moment transfer steel plate, respectively, where the distance between the two steel plates is equal to the width of the reinforced concrete pier, the tops of the two steel plates extend out of the top of the reinforced concrete pier and are connected with the two main beam-part bending moment transfer steel plates by high-strength bolts, respectively, and the two main beam-part bending moment transfer steel plates are connected with the steel girder; there are two horizontal-shear transfer steel plates, vertical to the two pier-part bending moment transfer steel plates, and arranged in the reinforced concrete pier between the two pier-part bending moment transfer steelplates, and the tops of the two horizontal-shear transfer steel plates extend out of the top of the reinforced concrete pier and are connected with the steel girder by high-strength bolts.

The invention discloses a microcomputer controlled electro-hydraulic servo large multifunctional pressure shearing tester capable of providing a large single pressure load, a horizontal shearing force value for a large pressure shearing test and a vertical ejection force value for a large corner test and capable of applying a large stress ratio to simulate the actual condition. The test comprises a host (1), a hydraulic system (2), an electro-hydraulic servo control system (3) and a sample conveying trolley (4), wherein the host (1) comprises a frame, a vertical servo loading cylinder (105), a corner servo loading cylinder (104), a box-type pressing plate (103) and a horizontal shearing servo loading device (108), wherein the frame consists of a movable cross beam (101), four lead screws (102) and a base (106); the vertical servo loading cylinder (105) and the corner servo loading cylinder (104) are arranged on the base (106) at the bottom of the frame; the box-type pressing plate (103) is connected with a piston of the vertical servo loading cylinder (105) through a load sensor; the horizontal shearing servo loading device (108) is arranged on the right side of the frame; and the horizontal shearing servo loading device (108) is arranged on a movable trolley (109), a guiding device (107) for controlling lifting of the horizontal shearing servo loading device (108) is arranged on the movable trolley (109), and a synchronous floating servo cylinder (110) is arranged on the lower part of the movable trolley (109).

The present invention provides a double-layer sector array folded coil structure integrated in a flexible circuit board, and designs and develops an arrayed omnidirectional type horizontal shear modal magnetostrictive transducer. Based on the magnetostrictive effect of ferromagnetic material nickel, the transducer realizes excitation of omnidirectional horizontal shear modal SH wave in the plate structure. Test verifies that the developed arrayed omnidirectional type horizontal shear modal magnetostrictive transducer can excite single SH0 modal waveguide inaluminum plate, and verifies that the developed omnidirectional type horizontal shear modal magnetostrictive transducer has better frequency response characteristics. The developed omnidirectional type horizontal shear modal magnetostrictive transducer and an array combined imaging algorithm can achieve efficient defect imaging on plate structure in wide range and board structure, and has very great value and potential in health monitoring and non-destructive evaluation of the plate structure.