50results about How to "Avoid spot welding" patented technology

The invention relates to the technical field of structural engineering, and discloses a connection joint of a fabricated circular steel tube casing fiber concrete column. The connection joint of the fabricated circular steel tube casing fiber concrete column comprises an outer-wrapped high-strength circular steel pipe, an inner sleeve high-strength round steel pipe and a circular casing conversion splitter plate, wherein wedge-shaped connecting teeth are arranged at the two ends of the outer-wrapped high-strength round steel pipe and the inner sleeve high-strength round steel pipe, the wedge-shaped connecting teeth are uncontinuously and evenly distributed along the circumference. The circular casing conversion splitter plate comprises a circular plate. A center through-hole is formed in the central position of the circular plate, the upper and lower faces of the circular plate are provided with vertical partition boards, each vertical partition board is provided with wedge-shaped chutes matched with the wedge-shaped connecting teeth, and the steel pipe and the circular casing conversion splitter plate are fixedly connected by the coordination between the wedge-shaped connecting teeth and the wedge-shaped chutes. According the connection joint and installation method of fabricated circular steel tube casing fiber concrete column, field welding between high-strength circular steel pipes is avoided, the reliability of the joint is improved, the steel part of the whole joint is produced by a factory and is assembled on the site, the concrete is poured on the site, and the influence of the construction on the quality is furthest minimized.

A hotspot stress monitoring method based on a measurement point pressure of an optical fiber sensor belongs to the field of local strength monitoring and ship stress monitoring of a designed ship. Themethod comprises the steps of mounting the optical fiber sensor according to the need of an actual ship height stress region, wherein the sensor is placed in a nominal stress region; conducting a finite element model simulation experiment, reading similar loading and capacity conditions in a finite element simulation process in combination with a sea condition and wave parameter information, determining an actual ship stress, and determining a measurement point position and finding out a relation coefficient k of the measurement point and the hotspot stress; and directly reading the hotspot stress according to a formula delta2=k*delta1 and the relation coefficient in combination with the measurement point stress. According to the hotspot stress monitoring method, a finite element model and an actual ship can be better connected in series, the actual ship can directly obtain the hotspot stress according to the measurement point pressure of the optical fiber sensor in the normal sailingprocess, the condition that information such as a mounting position must be considered for accurate measurement of the hotspot stress in the optical fiber sensor mounting process can be avoided, andthe real-time monitoring of ship stress and strain can be rapidly and efficiently performed.

The invention relates to a fabricated intelligent joint with particle damping storehouse energy dissipation and an installing method, and belongs to the technical field of structural engineering. Thefabricated intelligent joint comprises a core steel frame, an exteriorly-wrapping full fabricated steel pipe column, a full fabricated annular beam column connection assembly, a structural health detection system and a particle damping storehouse, wherein the core steel frame is located in the exteriorly-wrapping full fabricated steel pipe column and concentric with the exteriorly-wrapping full fabricated steel pipe column, the core steel frame comprises a circular hollow steel rib and a plurality of overhanging steel plate wings, the exteriorly-wrapping full fabricated steel pipe column is formed by splicing a plurality of arc-shaped steel pipe column slices, the particle damping storehouse and pouring concrete are arranged in space between the exteriorly-wrapping full fabricated steel pipe column and the circular hollow steel rib of the core steel frame; and the particle damping storehouse internally contains a large amount of rubber spherical particles. The fabricated intelligent joint with the particle damping storehouse energy dissipation and the installing method have the advantages that the particle damping storehouse is applied to the fabricated steel structure joint, the energy dissipation effect is excellent, and the joint has an excellent anti-seismic property.

The invention provides a double-layer square steel tube sound insulation wall structure and a mounting method thereof. The double-layer square steel tube sound insulation wall structure comprises a wall body foundation skeleton, a sliding door and a wash basin bracket, wherein the wall body foundation skeleton comprises two rows of parallel square steel tube skeletons at intervals; each square steel tube skeleton is formed by crossing and fixing a plurality of parallel transverse square tubes and vertical square tubes at intervals; each square steel tube skeleton is filled with sound absorbing cotton; the two rows of the square steel tube skeletons are fixedly connected by a plurality of transverse bars, and an air layer is formed in the middle part; a plurality of pulleys are arranged at the top part of the sliding door, and the sliding door is arranged on slide rails at the lower surfaces of the transverse bars at a proper position of the air layer; the wash basin bracket is a concave framework, the concave framework is formed by splicing and combining the transverse square tubes and the vertical square tubes, and a wash basin is arranged on the concave framework; a plurality of through holes of the transverse square tubes or angle steels at the inner side of the assembly type wash basin bracket are correspondingly hung on a plurality of screw bolts and screw rods at the outer side of each square steel tube skeleton at one side of the wall body foundation skeleton. The double-layer square steel tube sound insulation wall structure has the characteristics that the installation is flexible, the strength is high, the sound insulation effect is good, multiple functions are realized, the recycling function is realized, and the economy and the practicality are realized.

Disclosed is an integrated exhaust gas recovery device. An oil gas recovery header pipe, a pressurized air-blower unit, a gas-liquid separation device, an adsorption tower, a vacuum pump, a heat exchanger, a cyclic refrigerating unit, a recovery pot, a hydraulic pump unit and a process pipeline are integrated into one body and are installed inside a special-purpose frame structure. Instrument andequipment installation and debugging are carried out before the device provided by the invention is out of the factory, thus realizing overall design, overall installation and overall debugging. After equipment arrives at the loading and unloading site, the device can be directly used only after connecting anchor bolts, the technical pipeline, power supply line and communication circuits and simple debugging, thus saving onsite design and onsite construction amount, shortening project duration, avoiding onsite welding, raising onsite security and simultaneously improving reliability of a handling control system.

The invention belongs to the field of prefabricated construction, and relates to a connection node structure of a sinking prefabricated plate and an H-shaped steel beam. The plate top of a beam and plate connecting part is pre-embedded with a connecting member. The connecting member is composed of a connecting steel plate and a W-shaped steel bar. A single row of bolt holes are reserved in an outer extending section of the connecting steel plate. The W-shaped steel bar is welded to the bottom of the connecting steel plate. A single row of bolt holes are reserved in an upper flange of the H-shaped steel beam. Bolts pass through the upper flange of the steel beam and the connecting steel plate in sequence. The lower end of each bolt is welded firmly with the bottom of the upper flange of thesteel beam. The upper end of each bolt is fixed through a nut. A load on the prefabricated plate is transferred onto the steel beam through the W-shaped steel bar and the connecting steel plate, andthe path of the transferring force is clear. The W-shaped steel bar, the connecting steel plate and the bolts have good strength and rigidity so that the beam and plate connection are safe and reliable. The plate top of the prefabricated plate is flush with the top of the steel beam, the total height of the beam and plate is low, and the indoor height is increased. The beam and plate are connectedthrough the bolts, the on-site welding is avoided, and the assembly efficiency is increased.

The invention discloses a construction technology of a tracking type inclined single-shaft photovoltaic power generation system. The construction technology comprises the steps of: 1) determining point positions of a driving foundation and stand column foundations; 2) pouring the driving foundation and the stand column foundations by means of concrete; 3) installing a driving device on the drivingfoundation, and installing long stand columns and short stand columns on the stand column foundations respectively; 4) installing switching members above the long stand columns and the short stand columns, and prefabricating and welding a bearing box on the top part of each switching member; inserting a rotating beam in the bearing boxes above the long stand columns and the short stand columns which are arranged on the same column in the north-south direction; 5) installing anti-slip baffle plates; 6) connecting a push-pull rod with a driving arm of the driving device and the rotating beam ofeach column of tractors in a movable manner respectively; 7) fixing and installing assembly anchoring cross beams on the rotating beams; 8) and installing photovoltaic modules on the assembly anchoring cross beams. Compared with the prior art, the construction technology accelerates the construction speed, improves the operation safety and construction quality, reduces the high technical dependence on the workers, and is more environmentally friendly.

The invention discloses an assembled handrail convenient to install. The assembled handrail convenient to install comprises a plurality of pre-embedded assemblies arranged at intervals, wherein handrail stand columns are arranged on the pre-embedded assemblies, and a guardrail is connected between every two adjacent handrail stand columns; The pre-embedded assemblies comprise pre-embedded reinforcing steel bars and pre-embedded steel plates which are poured in concrete, wherein the pre-embedded steel plates are arranged on the pre-embedded reinforcing steel bars; reserved pipes are arranged onthe pre-embedded steel plates, and the bottoms of the handrail stand columns are connected with the reserved pipes; the handrail stand columns comprise stand columns, wherein the stand columns are provided with round pipes; and the guardrails comprise upper chord rods and lower chord rods which are arranged at intervals, wherein a plurality of wed rods are arranged at intervals between the upperchord rods and the lower chord rods, the left ends and the right ends of the upper chord rods and the lower chord rods are correspondingly provided with end plates, and mounting holes are formed in the end plates. The assembled handrail convenient to install has the advantages that size modeling is realized, production is carried out according to requirements of factory standard pieces, the industrialization degree is high, and the quality is improved; furthermore, the construction period is shortened, and the cost is reduced; in addition, on-site welding is avoided, and potential safety hazards are eliminated; and finally, nondestructive disassembling of the handrail is realized, the repeated use rate is greatly improved, and economic benefits are generated.

The invention discloses an embedded part for cable bridge laying and a construction method thereof. The embedded part comprises a pre-buried bolt, a connecting sleeve and an extension bolt, wherein the pre-buried bolt is of a U-shaped structure, threads are machined at two ends of the U-shaped structure, each end part of the pre-buried bolt is matched with a connecting sleeve, the two ends of theconnecting sleeve are also provided with threads, through matching of internal threads and external threads, one end of the connecting sleeve is connected with the pre-buried bolt, and the other end of the connecting sleeve is connected with the threaded end of the extending bolt; the other end of the extension bolt is provided with a square end, and the square end of the extension bolt is connected and fastened with the connection sleeve at the later stage of installation; and the extension bolt is connected with the pre-buried bolt through the connecting sleeve when a cable support is installed, so that a cable support structure is fixed. According to the embedded part for cable bridge laying and the construction method thereof, the pre-buried bolt and the connecting sleeve are combinedto form a pre-buried part, the pre-buried part is integrally poured with the concrete, then the extension bolt is connected with the pre-buried bolt through the connecting sleeve, so that the fixing of the cable support structure is completed, and the construction is rapid and convenient.

The invention discloses a removable hanging pile bracket for construction of a hanging pile of a steel casing of a cofferdam, which comprises a central plate and a plurality of support legs. The central plate comprises a central sleeve, an upper end plate and a lower end plate, wherein the upper end plate and the lower end plate are welded on the peripheral surfaces of the upper end and the lower end of the central sleeve; and the support legs are respectively and uniformly arranged between the upper end plate and the lower end plate along the periphery of the central plate and are respectively hinged with the upper end plate and the lower end plate. When the removable hanging pile bracket is in the hanging state, the central plate is rotated to the position where the support plates are aligned at reserved holes in the steel casing, the support legs are pulled out from the reserved holes and are fastened to the central plate through bolts after adjustment and positioning, and construction can be carried out after the removable hanging pile bracket is installed. When the construction is completed, the bolts are removed, the bracket can be used in an inverted way, the efficiency of hanging pile construction can be increased, and the construction cost can be reduced.

The invention relates to a lateral support device for structural tests, which includes a lateral fixing device, a column and a connection and fixing device connecting the lateral fixing device and the column; the lateral fixing device includes a first symmetrically arranged A support piece and a second support piece, the first support piece and the second support piece both include a first channel steel and a third channel steel arranged in parallel and in the same direction, and a second channel connecting the first channel steel and the third channel steel Steel and the tightening device arranged on the back side of the web of the first channel steel and the third channel steel; The roller bearing on the backing plate and the roller arranged in the roller bearing; the connecting and fixing device is vertically arranged at both ends of the lateral fixing device and is perpendicular to the lateral fixing device in the horizontal direction. The invention has clear force transmission path, simple processing and installation, and can effectively restrain the out-of-plane deformation of the test member during the test.

The invention provides a double-layer square steel tube sound insulation wall structure and a mounting method thereof. The double-layer square steel tube sound insulation wall structure comprises a wall body foundation skeleton, a sliding door and a wash basin bracket, wherein the wall body foundation skeleton comprises two rows of parallel square steel tube skeletons at intervals; each square steel tube skeleton is formed by crossing and fixing a plurality of parallel transverse square tubes and vertical square tubes at intervals; each square steel tube skeleton is filled with sound absorbing cotton; the two rows of the square steel tube skeletons are fixedly connected by a plurality of transverse bars, and an air layer is formed in the middle part; a plurality of pulleys are arranged at the top part of the sliding door, and the sliding door is arranged on slide rails at the lower surfaces of the transverse bars at a proper position of the air layer; the wash basin bracket is a concave framework, the concave framework is formed by splicing and combining the transverse square tubes and the vertical square tubes, and a wash basin is arranged on the concave framework; a plurality of through holes of the transverse square tubes or angle steels at the inner side of the assembly type wash basin bracket are correspondingly hung on a plurality of screw bolts and screw rods at the outer side of each square steel tube skeleton at one side of the wall body foundation skeleton. The double-layer square steel tube sound insulation wall structure has the characteristics that the installation is flexible, the strength is high, the sound insulation effect is good, multiple functions are realized, the recycling function is realized, and the economy and the practicality are realized.

The invention belongs to the technical field of civil engineering, and discloses an assembled outer sleeve staggered flange intersecting joint, which includes a lower outer sleeve and an upper outer sleeve, and a main body with two ends of the lower outer sleeve and the upper outer sleeve plugged together. The chord, the lower chord installed on the side of the lower outer sleeve and the upper outer sleeve, and the vertical rods and diagonal rods arranged on the side surface of the upper outer sleeve, between the main chord and the lower outer sleeve and the main chord Both the rod and the upper outer sleeve are fixed by the first connection assembly, and high-strength bolts for connecting plates are fixedly installed between the lower outer sleeve and the upper outer sleeve; Using technologies such as outer sleeve, staggered flange and full bolt connection, a prefabricated truss connection intersecting joint suitable for large-span space truss structures is proposed. This joint has high rigidity, good stability, and good mechanical properties. Fully bolted and efficient assembly of space truss structures.

The invention discloses a column through type light steel keel elevator shaft system. The column through type light steel keel elevator shaft system comprises a mounting module, the mounting module comprises an elevator shaft assembly and a front chamber assembly adjacent to the elevator shaft assembly, the elevator shaft assembly is used for elevator lifting operation, and the front chamber assembly is used for people to get on and off an elevator. The elevator shaft assembly and the front chamber assembly are fixedly connected with skin wall assemblies, and the skin wall assemblies are used for wrapping an elevator shaft frame and an elevator front chamber frame to reinforce stress; and the elevator shaft assembly and the front chamber assembly each comprise a main supporting frame and an auxiliary supporting frame, each main supporting frame comprises a plurality of main supporting columns, the multiple main supporting columns form an overall peripheral frame, and ring beams are fixedly connected between the main supporting columns located on the floors. According to the column through type light steel keel elevator shaft system, the advantages of assembly line customized production, light-weight or hoisting-free equipment mounting, full-bolt splicing without welding, excellent anti-seismic property, material saving and construction procedure simplification can be realized, the construction period is short, and the application prospect is great.

The invention belongs to the technical field of structural engineering and particularly relates to a heterotype combination structure for fabricated giant tube-in-tube circular steel tube columns and a mounting method. The heterotype combination structure comprises at least two tube-in-tube circular steel tube columns, circular converting separation sleeves and high-strength steel connecting plates; the upper portions and the lower portions of the tube-in-tube circular steel tube columns are connected through the circular converting separation sleeves, and the left portions and the right portions of the tube-in-tube circular steel tube columns are connected through the high-strength steel connecting plates; and each tube-in-tube circular steel tube column comprises an external tube and an internal tube, and each circular converting separation sleeve comprises a base plate and vertical separation plates. According to the heterotype combination structure for the fabricated giant tube-in-tube circular steel tube columns and the mounting method, the influence of on-site construction on the quality is greatly lowered, connecting reliability of nodes is higher, and meanwhile, the problems that in the prior art, when the loading is large, the bearing capacity of a steel tube concrete structure cannot meet a stress requirement, and when the dimension of the columns is large, the building spaces at the nodes are wasted are solved; and construction is easy, mounting is convenient, reliability is good, and good market promotion prospects are achieved.

The invention discloses an end-expanded recyclable fence and a construction method thereof, and belongs to the technical field of buildings. The end-expanded recyclable fence comprises a foundation, stand columns and transverse square pipes which are connected with one another, wherein the foundation is formed by combining a round steel pipe and a base plate which are inserted into the ground, the end of the round steel pipe is freely expanded, and the top of the base plate is prevented from sinking; the stand columns and the foundation are arranged up and down at the same vertical position and connected through round-top and square-bottom pipes to form a fence frame; the transverse square pipes are arranged between the stand columns, the transverse square pipes and the stand columns are connected through two different types of clamps, galvanized iron plates are installed on the transverse square pipes to form a fence plane, and the transverse square pipes and the galvanized iron plates are connected into a whole through first connecting pieces and second connecting pieces. According to the end-expanded recyclable fence, factory prefabrication is adopted, the quality is guaranteed, installation is convenient, on-site welding is not needed, the construction speed is high, few auxiliary materials and manpower resources are needed in the construction period, organization construction is convenient, disassembly, conveying and storage are convenient, damage is not likely to happen in the conveying process, and economic benefits are good.

A universal adjustment device, comprising a horizontal main body beam and a vertical curtain wall column; defined by the length direction of the main body beam as the first direction, the length direction of the curtain wall column as the second direction, and the main body beam facing the curtain wall column The horizontal direction of the horizontal direction is the third direction, and the first direction, the second direction, and the third direction are perpendicular to each other; the top surface of the main beam is fixed with channel steel, and several symmetrical through holes are provided on both sides of the channel steel; the channel There are two bases with an inverted U-shaped section on the steel top, and the two sides of the bases are fixedly connected by bolts penetrating the through holes; the top surface of the bases is fixed with two parallel vertical ear plates; the two sides of the curtain wall columns There are two parallel horizontal lugs; on the same side of the curtain wall column, the two horizontal lugs and the two vertical lugs are connected by an adjustment device; the adjustment device includes a first arm and a second arm , with a sleeve arm between them. The invention can avoid on-site welding and simultaneously improve installation precision.