149 results about "Coupling beam" patented technology

The invention discloses a modular double-sided laminated shear wall structure system and a construction method, and relates to the technical field of constructional engineering.The structural characteristics of a double-sided laminated shear wall are utilized, an inner shear wall connected between adjacent concrete modules is split into two page plates, the two page plates serve as prefabricated side walls of the adjacent concrete modules correspondingly, and meanwhile, the two page plates serve as prefabricated side walls of the adjacent concrete modules correspondingly; a single-face superposed beam is split into a connecting beam side formwork and a connecting beam single-side prefabricated slab, gable walls of end modules are prefabricated and assembled according to a fully-prefabricated shear wall structure, the two ends of the fully-prefabricated shear wall are connected in a centralized mode in a vertical steel bar staggered anchoring connection mode, and adjacent concrete modules can be connected only by pouring concrete in site construction. Meanwhile, the prefabricated side wall of the concrete module serves as an inner shear wall page plate to jointly participate in structural stress, the structural force transmission mechanism is clear, the situation that the usable space of a building is reduced due to a traditional thin shell plate can be avoided, and the overall performance of the building is improved.

The invention belongs to the technical field of energy dissipation and shock absorption of super high-rise structures, and particularly relates to an assembly type multi-stage energy dissipation outrigger system adopting eccentric bracers.The outrigger system comprises a lower chord, two upper chords and two self-resetting energy dissipation bracers.The two upper chords are provided with a bent shear type energy dissipation coupling beam therebetween and detachably connected with the bent shear type energy dissipation coupling beam; the other ends of the two sections of upper chords are respectively in semi-rigid connection with the core tube and the frame column, and two ends of the lower chord are respectively detachably connected with the core tube and the frame column; corner type energy consumption connecting devices are arranged at the upper parts and the lower parts of connecting joints of the two sections of upper chords and the corresponding core tube and the frame column; one end of the self-resetting energy dissipation support is detachably connected to the upper chord, and the other end of the self-resetting energy dissipation support is detachably connected to a node formed by the lower chord and the core tube or the frame column; the yield load of the bending shear type energy dissipation coupling beam and the yield load of the self-resetting energy dissipation support are larger than the yield load of the corner type energy dissipation connecting device. By means of the system, replacement of energy consumption parts and multi-stage damping can be achieved.

The invention provides an MEMS gyroscope and electronic equipment. The MEMS gyroscope comprises a center anchor point, a driving unit, driving pieces and an electrode assembly, wherein the driving pieces are symmetrically arranged on the left side and the right side of the center anchor point relative to the center anchor point, and the electrode assembly provides driving force for a gyroscope structure; the mass block unit comprises first detection mass blocks, second detection mass blocks, third detection mass blocks and decoupling units, the first detection mass blocks are symmetrical about the center anchor point and arranged on the outer side of the driving part, the second detection mass blocks are arranged on the upper side and the lower side of the center anchor point respectively, and the third detection mass blocks are arranged on the inner side of the driving part respectively. Comprising a decoupling mass block arranged between the center anchor point and the third detection mass block, one side of the decoupling mass block is connected to the center anchor point through a first coupling beam, and the other side of the decoupling mass block is connected to a first anchor point of a base through a first guide beam. According to the invention, Z-axis driving and detection decoupling can be realized, the coupling error is reduced, and the gyroscope detection precision is improved.

The invention relates to the technical field of gyroscopes, and discloses an anti-vibration steering MEMS gyroscope which comprises a substrate, two driving frames, two coupling frames, two detection assemblies, two driving connecting beams, a center anchor point, two center anti-vibration coupling beams and a first steering decoupling beam. The detection assembly comprises detection frames and detection electrodes, the detection electrodes on the two detection frames form a differential electrode, the two central anti-vibration coupling beams can deform in the second direction, and when the angular velocity in the third direction is detected, the detection frames are driven by the first steering decoupling beams to reciprocate in the second direction along with the coupling frames moving in the first direction. According to the anti-vibration steering MEMS gyroscope disclosed by the invention, not only can the impact resistance of the gyroscope be improved, but also interference signals caused by process asymmetry can be reduced, and the sensitivity and the resolution of the gyroscope are improved.

The invention provides a steel structure assembly type energy storage cabin base and a construction method. The steel structure assembly type energy storage cabin base comprises a plurality of sets of single-truss steel frames, and the adjacent single-truss steel frames are rigidly connected through steel coupling beams; the single steel frame consists of a steel frame column, a steel frame beam, a first end plate and a second end plate; the two ends of the steel frame beam are each rigidly connected with a steel frame column, the steel frame columns are perpendicular to the steel frame beam, second end plates are fixed to the tops of the steel frame columns, and first end plates are fixed to the bottoms of the steel frame columns. The bottom of the steel frame column extends to the position below the ground, the first end plate is connected with a foundation bolt fixed to the concrete base in advance, an adjusting nut and a nut are arranged on the foundation bolt, and the space between the first end plate and the concrete base is filled with shrinkage-free fine aggregate concrete or a grouting material layer. And an anti-corrosion structure is arranged at the contact part of the steel frame column and a soil body. The construction period of the energy storage cabin foundation can be remarkably shortened, energy is saved, carbon is reduced, and the recycling value of the energy storage cabin foundation is improved.

The invention discloses a double-column type pier structure system with multistage anti-seismic protection and self-resetting functions, and belongs to the technical field of bridge engineering anti-seismic design and toughness improvement. The double-column type pier comprises two concrete filled steel tube section columns, a connecting beam is arranged between the two concrete filled steel tube section columns, and the connecting beam comprises a concrete cast-in-place connecting beam and a steel section prefabricated connecting beam. The steel section prefabricated coupling beam comprises embedded sections, the embedded sections on the two sides are rotationally connected, and the embedded sections are connected through a connecting plate with an energy dissipation structure and a steel strand to form an overall structure capable of dissipating energy and achieving self-resetting. Unbonded prestressed tendons and energy-consuming steel bars for self-resetting are arranged in the concrete-filled steel tube section column in a penetrating manner so as to adapt to deformation of a pier body when joints between sections of the concrete-filled steel tube section column swing. The adaptability and restoring force of the bridge pier under different seismic intensities can be enhanced, the structural stability and integrity are ensured, meanwhile, the bridge pier structure and the connecting mode are optimized, and rapid repairing and function recovery after an earthquake are achieved.

The utility model relates to a kind of MEMS accelerometer, including substrate and multiple sensitive structures being set on the substrate, multiple the sensitive structure is connected by elastic coupling beam structure each other between, each the sensitive structure includes mass and the sensitive capacitor being set on the mass, the mass of adjacent two the sensitive structure is connected by the elastic coupling beam structure each other.The MEMS accelerometer provided by the utility model solves the problem that the existing MEMS accelerometer improves sensitivity and signal-to-noise ratio and leads to the problem of large spring beam thermal stress.

The utility model provides an accelerometer with beams and anchor points on the outer side of a structure, a substrate layer is in an XY plane, and a device layer is located above the substrate layer; the movable mass block is located in the middle of the substrate layer and connected with an outer frame anchored to the substrate layer through anchor points through a first elastic beam unit, a second elastic beam unit, a third elastic beam unit and a fourth elastic beam unit. The first elastic beam unit and the third elastic beam unit are connected through a coupling beam unit which is parallel to the X axis and located on the upper side and the lower side of the movable mass block, and the second elastic beam unit and the fourth elastic beam unit are connected through a coupling beam unit. The detection capacitor structure is respectively connected with the movable mass block and the substrate layer in the middle area of the movable mass block; when the movable mass block moves in the X-axis direction, the capacitance value of the detection capacitor structure changes, so that acceleration detection is achieved, and the accelerometer which can have good dynamic output stability under the condition that the sensitivity of the accelerometer is large is provided.

This invention provides a beam-deflecting metasurface and a quantum sensor. The beam-deflecting metasurface includes a metasurface array, which in turn includes metasurface units. Each metasurface unit comprises a substrate unit block and a copper ring. In any metasurface array, the outer diameter of the copper ring is uniform. By changing the inner diameter of the copper ring, the transmission phase of the corresponding metasurface unit is altered. The beam-deflecting metasurface of this invention effectively controls the coupling and probe beams frequently used in quantum sensors, preventing the probe beam from being affected by the coupling beam. The overall structure is simple, and the cost of the beam-deflecting metasurface is low, enabling the quantum sensor to have a wide range of applications. Because the copper ring has a symmetrical structure, it is polarization-independent. For both the probe and coupling beams, the transmittance of the beam-deflecting metasurface remains above 90%, ensuring efficient transmission of the required optical signals.

The pocket wagon is provided with at least one blade (1), and the dorsal beam (3) of the blade (1) and the crossbeams (4) of the blade (1) support the floor (22) of the basket (20) in such a way that the outermost running belts (22') of the basket (20) are located between the blades (2) and the dorsal beam (3), and the dorsal beam (3) on at least one side of the spurs (1) passes through a torsion beam 8, which is connected to the spurs (2) to form a saddle (9) at the connection point for the pivot support bracket (33) of the fifth wheel trailer (32) into a coupling beam 7 connected to the spurs by a headstock (12). In the pocket (6) of the wagon is placed a basket (20). In the upper portions of the side walls of the basket (20) there are an even number of longitudinal open cut-outs (24), whereby in the portions of the upper walls of the basket (20) between two adjacent cut-outs (24) there are pivotally bearing longitudinal handle arms (25), having a length corresponding to the length of the cut-outs (24), the free ends of which are provided with catches for locking the handle arms (25) in locks (30) located on opposite sides of the two adjacent cut-outs (24).

The present invention discloses an efficient prefabricated coupling beam and joint structure for superposed shear walls, which optimizes the prefabricated part of the coupling beam and the overall coupling beam structure of the superposed shear wall. The stirrups of the prefabricated part of the coupling beam do not pass through the side formwork during the production stage. The connection between the prefabricated part of the coupling beam and the horizontal post-cast strip is realized by arranging connecting steel bars in the cavity or bending out the open stirrups extending from the prefabricated part of the coupling beam. Stirrups are arranged in the horizontal post-cast strip or the stress longitudinal bars on the top surface of the coupling beam and the post-cast concrete in the horizontal post-cast strip are constrained by means of connecting steel bars and the negative moment bars of the floor support. After pouring the post-cast concrete, the prefabricated part of the coupling beam and the post-cast concrete in the cavity and the horizontal post-cast strip form an integral coupling beam. When the prefabricated wall is produced in the present invention, the stirrups of the prefabricated part of the coupling beam do not pass through the side formwork, which can avoid the alignment and cooperation problems between the coupling beam stirrups and the side formwork during the turning and pressing processes. The production efficiency is high, the side formwork does not have holes, and the generalization degree is high. The joint structure can ensure the mechanical properties of the integral coupling beam.

The invention provides a double-coupling-beam reinforcing foundation with an inclination monitoring function for a power transmission line iron tower, and relates to the technical field of power transmission iron tower reinforcing foundations. The double-coupling-beam reinforcing foundation comprises four pre-buried bases distributed in a rectangular array mode, lower foundation columns installed on the tops of the pre-buried bases and upper foundation columns installed on the tops of the lower foundation columns; outer hoop plates are installed on the outer side of the lower portion of each lower foundation pillar and the outer side of the upper portion of each upper foundation pillar, a lower connecting beam mechanism is installed among the four lower foundation pillars, an upper connecting beam mechanism is installed among the four upper foundation pillars, and a reinforcing mechanism is installed in the center of the four embedded bases. An adjusting mechanism is mounted in the lower foundation pillar; through the combination of the pre-buried base, the lower foundation column, the upper foundation column, the lower connecting beam mechanism and the upper connecting beam mechanism, four foundations which are distributed independently traditionally are connected into an integral cooperative working system; stress sharing and dynamic compensation are achieved, and the inclination risk caused by differential settlement of the ground surface of the goaf is effectively resisted.

The invention discloses an acceleration sensor based on a coupled beam type 1:3 internal resonance phenomenon, comprising: a mass block, a first micro-lever and a second micro-lever arranged on one side of the mass block in a horizontal direction and symmetrically arranged up and down, a first tuning fork beam and a second tuning fork beam arranged on one side of the mass block in a horizontal direction, two ends of the first tuning fork beam being fixed respectively by a first fixed end and a second fixed end; the first fixed end and the second fixed end being arranged on both sides of a detection electrode respectively; two ends of the second tuning fork beam being fixed respectively by a third fixed end, a first micro-lever and a second micro-lever; two ends of the second tuning fork beam being fixed respectively by the third fixed end, the first micro-lever and the second micro-lever; the first tuning fork beam and the second tuning fork beam being coupled by electrostatic coupling, a coupling power supply outputting a coupling voltage being loaded on the second fixed end connected to the first tuning fork beam, the first tuning fork beam detecting amplitude and frequency by a fixed detection electrode; the second tuning fork beam adjusting driving force by a fixed excitation electrode.

The application relates to a delay closure design method of a key coupling beam in a conversion structure and the conversion structure. The method comprises the following steps: in the structure design stage, identifying a secondary beam conversion beam and a coupled wall above the secondary beam conversion beam, and determining at least one coupling beam of adjacent floors of the coupled wall above the secondary beam conversion beam as a key coupling beam; during construction of the secondary beam conversion beam and an upper main body structure, only pre-burying stress steel bars of the key coupling beam, keeping a formwork of the key coupling beam to be set up and in an empty mode, monitoring vertical deformation of the secondary beam conversion beam and the upper main body structure in real time, and judging whether the vertical deformation is stable according to a preset quantitative judgment standard; and when it is judged that the vertical deformation is stable, pouring concrete into the key coupling beam for closure. Through time sequence control of the delay closure of the key coupling beam, the problem of insufficient shear wall shear capacity of the secondary beam conversion coupled wall caused by deformation of the conversion beam is solved.

The present application relates to a kind of large diameter steel pipe stiff concrete column reverse construction joint construction method, comprising the following steps: construction pile foundation, installation positioning base, install steel pipe column positioning structure, install steel pipe column, construction coupling beam.The beneficial effects of the present application are: using positioning base to accurately position and fix steel pipe column, using the rotation of connecting rod to control the rotation of ellipsoid, to flexibly adjust the elevation of each point at the bottom end of steel pipe column, to ensure the perpendicularity of steel pipe column, using connecting plate to lock the state of steel pipe column, to realize the reliability and stability of steel pipe column and pile foundation reverse construction connecting joint;Using hoop ring and support block to install coupling beam formwork, using resting groove and resting hole to flexibly adapt to the formwork installation of a variety of size coupling beams, to improve the applicability of formwork fixing and positioning.

The application provides a tower crane supporting structure and an implementation method, the tower crane supporting structure is installed in a core tube of a building, the core tube comprises a shear wall, the shear wall is provided with at least one pair of horizontally and intervally arranged concrete coupling beams, and the tower crane supporting structure comprises: steel trusses, the two ends of the steel trusses are arranged on the concrete coupling beams respectively, the steel trusses are two, and the two steel trusses are arranged in parallel; a secondary beam, the secondary beam is arranged between the two steel trusses, and the two steel trusses are connected through the secondary beam. The tower crane supporting structure changes the fixing mode of the reinforced concrete into the mode of the steel truss, the steel truss has light self weight and large span, the installation and dismounting process is simplified while reliability is ensured, the concrete structure does not have to be damaged, the installation and dismounting steps are greatly simplified, the material can be recycled and used, energy saving and environmental protection are achieved, and safety is higher.

The invention provides a quartz gyroscope damping structure and a gyroscope sensing element. The quartz gyroscope vibration reduction structure is used for a gyroscope sensing element comprising a shell and a chip, is made of quartz and comprises an outer frame, an inner frame and a vibration reduction part, and the outer frame is used for limiting the appearance of the quartz gyroscope vibration reduction structure; the boss is located at the central position of an area limited by the outer frame; the coupling beam is located between the outer frame and the boss and connects the outer frame with the boss, when the quartz gyroscope vibration reduction structure is applied to the gyroscope sensing element, the outer frame is fixedly connected with the shell, the boss is fixedly connected with the chip, and therefore the coupling beam conducts stress isolation between the shell and the chip. According to the invention, the low-frequency vibration of the gyroscope sensing element can be inhibited, the influence of an external mechanical environment on the gyroscope sensing element is reduced, and the volume of the gyroscope sensing element is not increased while the structure is increased.

The present application relates to the construction method for conflict treatment of super-high core tube super-dense diagonal oblique rib and stiff steel skeleton, comprising the following steps: software working condition simulation analysis, determining the floor and distribution position with diagonal oblique rib coupling beam, establishing three-dimensional model, carrying out space avoidance analysis, and analyzing diagonal oblique rib arrangement model; determining replacement scheme and coupling beam range, using diagonal steel plate to replace the conflict diagonal oblique rib, and reserving a small amount of diagonal oblique rib arranged outside the range of stiff steel skeleton on both sides of the coupling beam; designing and prefabricating diagonal steel plate; on site, welding the diagonal steel plate on the stiff steel skeleton; coupling beam main rib connection and concentrated hoop rib penetration; arranging the remaining diagonal oblique rib, symmetrically penetrating the diagonal oblique rib outside the range of stiff steel skeleton; coupling beam side horizontal rib and tension rib binding; supporting formwork and pouring concrete. The diagonal steel plate and the both-end stiff steel skeleton flange are full penetration welded into one body, only a small amount of diagonal oblique rib is reserved on both sides of the stiff steel skeleton, and the purpose of conflict treatment of super-dense diagonal oblique rib and stiff steel skeleton is achieved.

Herein is provided a resonator (100), comprising a resonating element (101), wherein the resonating element (101) comprises a plurality of non-rectangular resonating beam elements (101), the plurality of beam elements (101) being positioned adjacent to each other, wherein the adjacent beam elements are mechanically connected to each other by connection elements (102) and separated from each other by non-linear trenches (104) Herein is further provided an apparatus, such as a resonator array, comprising at least one resonator (100).

The invention relates to the technical field of bridge seismic resistance, in particular to a multifunctional vertical coupling beam device based on a chain type belt energy dissipation component, which comprises an energy dissipation component, a chain type structure, a pier connecting assembly, a beam connecting assembly and an embedded assembly, the chain structures are arranged at the two ends of the energy dissipation component, the pier connecting assembly is arranged on one side of a pier in the longitudinal bridge direction and connected with the chain structures, and the beam connecting assembly is arranged on one side of a beam in the longitudinal bridge direction and connected with the chain structures. The pre-embedded assembly is connected with the pier connecting assembly and the beam connecting assembly. Multi-directional limiting of the main beam can be effectively achieved, the stability and safety of the overall structure of a bridge are improved, and hazards caused by earthquakes, floods and other disasters and damage caused by overweight, support displacement and the like under the normal use condition are reduced.

The application discloses an amplification type self-resetting coupling beam damper and an assembling and working method thereof. The damper comprises two symmetrically arranged shear main body steel plates, namely a first shear main body steel plate and a second shear main body steel plate; a shear steel plate is connected in parallel between a vulcanization or adhesive fixed viscoelastic material layer and the shear main body steel plate to form a vertical viscoelastic shear energy dissipation unit; a core rotary displacement amplification part is used for shearing the viscoelastic material layer in a displacement amplification type manner; the other end of the shear main body steel plate is provided with a connecting main body used for connecting with the coupling beam; and a self-resetting energy dissipation mechanism provides a recovery load for relative displacement deformation of the shear main body steel plate. When subjected to an earthquake, vertical relative movements occur at both ends of the coupling beam damper, the core rotary displacement amplification part performs displacement amplification type shear energy dissipation on the viscoelastic material, and meanwhile, the self-resetting part provides a recovery force, so that the device is self-resetting.

The utility model provides a foundation treatment structure spanning a shallow pipe culvert, which comprises two groups of jet grouting piles arranged in parallel, a miniature steel pipe pile is arranged in each jet grouting pile, newly-built pile bearing platforms are arranged on the jet grouting piles and the miniature steel pipe piles, the newly-built pile bearing platforms are connected through a connecting beam, a concrete slab is paved on the upper part of the connecting beam, and the concrete slab is arranged on the lower part of the connecting beam. A conical bearing platform is arranged on the concrete plate, and a concrete stand column is arranged in the middle of the conical bearing platform. A combined stress body is formed through the jet grouting pile-micro steel pipe pile and the coupling beam structure, the characteristics of high strength and compression resistance of the micro steel pipe pile are fully played, a large contact area of soil around the pile is formed through the high-pressure jet grouting reinforcement effect of the jet grouting pile, the compression bearing capacity, the uplift bearing capacity, the shear bearing capacity and the like of the combined pile body are enhanced, and the construction efficiency is improved. And the connecting beam avoids buried objects in the shallow pipe culvert, the existing equipment is protected from being affected and damaged by construction, the foundation in the construction area is transformed and strengthened, and the construction method has extremely high engineering suitability and generalization performance.

The application discloses a replaceable coupling beam shear wall structure design method, comprising the following steps: S1, determining an overall structure performance target; S2, determining a yield section replaceable coupling beam arrangement scheme; S3, yield section replaceable coupling beam stiffness calculation; S4, non-yield section connecting beam and pre-embedded steel strength checking; checking yield section replaceable coupling beam bending resistance or shear resistance; S5, checking yield section replaceable coupling beam stability; S6, designing a connecting mode between the yield section replaceable coupling beam and the non-yield section connecting beam; S7, setting a yield section replaceable coupling beam restoring force model and a yield displacement; S8, performing structure elastic-plastic analysis; and S9, checking structure performance. The replaceable coupling beam can deform plastically and dissipate energy under large seismic action, and the residual deformation can be controlled; the inter-story drift angle is smaller than that of a traditional structure; and the replaceable coupling beam can be replaced quickly after an earthquake by adopting detachable connection, so that the structure function can be recovered quickly and completely.

The application discloses a kind of assembled interstory coupling beam steel binding methods of laminated slab, comprising: the beam bottom support of erecting interstory coupling beam, erecting beam bottom plate on beam bottom support, and erecting laminated slab support on beam bottom support, erecting steel beam binding frame on beam bottom plate, and interstory coupling beam bottom reinforcement, stirrup and waist muscle are bound on steel binding frame;Laminated slab is installed on laminated slab support, and the steel of relative position of two sides laminated slab is staggered arrangement, and beam surface muscle is bound;The steel binding device includes gun-shaped shell, rotating motor is arranged in the gun-shaped shell, the end of rotating motor output shaft is connected with connecting block, the end of connecting block is connected with driving gear, positioning cylinder is connected on driving gear, adjusting assembly is arranged in the positioning cylinder.The length of steel binding device is adjusted by adjusting assembly, and the use range of steel binding device is expanded.

The invention relates to a building structure with an anti-seismic function. The building structure structurally comprises two wall bodies and a steel coupling beam located between the two wall bodies. A mounting groove is formed in the top of the wall body, clamping blocks are arranged at the two ends of the steel coupling beam respectively, the clamping blocks are placed in the mounting groove, anti-shear connecting pieces are connected to the clamping blocks in a penetrating mode, the anti-shear connecting pieces are connected to the mounting groove in a penetrating mode at the same time, the steel coupling beam is divided into a left section and a right section, and the left section and the right section are connected through a steel beam. The two sections of steel coupling beams are connected with each other through an anti-seismic assembly. When the shearing force exceeds a set threshold value, the preset shearing bolt is fractured to cut off the connection between the steel smelting beam and the wall body, the force is prevented from being continuously transmitted to the wall body, and the wall body is prevented from being damaged; the steel coupling beam is subjected to plastic deformation through the corrugated structure of the mounting frame, stress is dispersed through the fold effect, local stress concentration is reduced, and seismic energy is dispersed and consumed. The shear-resistant connecting piece and the anti-seismic assembly can be replaced independently, the repair cost can be reduced by dismounting and replacing damaged parts, and waste of materials is reduced.

This invention belongs to the field of seismic resistance technology for building structures, and relates to a bending energy-dissipating coupled shear wall beam device, including a first beam segment, a second beam segment, and a sliding connection mechanism for connecting the first and second beam segments. Both the first and second beam segments have a reinforcing structure at their ends near the corresponding shear wall. The sliding connection mechanism includes a first end plate, a second end plate, an upper connector, and a lower connector. The first and second end plates are respectively connected to the adjacent ends of the first and second beam segments. Both the first and second end plates have a first elongated hole in the vertical direction. The upper and lower connectors are symmetrically arranged and pass through the upper and lower ends of the first elongated holes, respectively. In this invention, the beam is transformed from being primarily subjected to shear stress to being primarily subjected to bending stress. Under strong earthquakes, the beam can fully dissipate seismic energy through bending deformation, effectively improving the seismic resistance of the building structure.

This invention relates to the field of construction equipment technology, specifically to a cantilever beam construction operation platform. It includes a main frame mounted on a construction floor slab, a fixed base frame mounted on top of the floor slab, a mobile trolley mounted on top of the fixed base frame, a support assembly mounted on the inner side of the main frame top and above the mobile trolley, and a platform body mounted on the outer side of the floor slab. The platform body is fixedly connected to the mobile trolley via two sets of connecting rods. The main frame is assembled from four sets of support rods, two sets of crossbeams, and two sets of longitudinal beams. The four sets of support rods are respectively installed at the four corners of the top of the floor slab, and the crossbeams are installed on top of the two sets of support rods on the same side of the front and rear sides of the floor slab top. Compared with existing cantilever beam construction operation platforms, the main frame and fixed base frame of this invention can be quickly disassembled and installed, the structure is simple, and assembly and disassembly are convenient, greatly reducing construction time and increasing construction speed.

The application provides an independent column connecting beam node load upgrading method, and belongs to the technical field of connecting beam node load upgrading. The independent column connecting beam node load upgrading method comprises the following steps: disassembling the connecting beam node; fixing and measuring the connecting beam node by using a force measuring device to obtain the stress value of the connecting beam node; manufacturing an assembly test piece according to the stress value of the connecting beam node; stress measuring the assembly test piece and evaluating according to the obtained stress value; judging the reassembly feasibility of the assembly test piece according to the evaluation result; and grouping and reassembling the assembly test piece to replace the original connecting beam node structure. The application can construct an assembly test piece according to the stress vulnerable point of the original connecting beam node, and adapt to the load upgrading and reconstruction of the bridge connecting beam by reassembling the assembly test piece.

The invention discloses an MEMS resonator and a vibrator thereof. The vibrator comprises two vibration arms arranged at an interval, an anchoring area located between the two vibration arms, and a coupling beam connecting the vibration arms and the anchoring area. Under the action of driving force, the two vibration arms swing in the first direction relative to the anchoring area, during swing of the vibration arms, a heat flow path opposite to the swing direction is formed between the two opposite sides in the first direction, and heat dividing grooves extending in the second direction perpendicular to the first direction are formed in the heat flow path of the vibration arms. The heat dividing grooves divide the heat flow path into multiple sections of first heat flow sub-paths, and the path length of the first heat flow sub-paths in the first direction is smaller than the width of the vibration arm in the first direction. The heat separation groove can reduce the length of a heat flow path and increase the heat frequency, so that the heat frequency is far away from the resonant frequency, the heat elastic loss is reduced, and the Q value of the MEMS resonator is improved.