703 results about "Purlin" patented technology

The invention belongs to the technical field of bridge engineering, and particularly relates to a deepwater lock catch steel pipe pile cofferdam construction method which comprises the following steps: construction preparation: delimiting a steel pipe pile cofferdam area; drilling and groove milling are carried out along the steel pipe pile cofferdam area to form a cofferdam groove, and sandy soil is backfilled in the cofferdam groove; a guide device is lowered along the bored pile steel casing, and steel pipe piles are inserted one by one to form a steel pipe pile cofferdam; a plurality of inner supporting systems are assembled; a covering layer is excavated on the inner side of the steel pipe pile cofferdam to the designed elevation; underwater grouting is conducted on the inner sides and the outer sides of the steel pipe piles located in the cofferdam grooves; the multiple inner supporting systems are sequentially lowered to the designed elevation; a gap between each enclosing purlin structure and the steel pipe pile is checked; the bottom of the foundation pit is cleaned, water is pumped layer by layer, and concrete is poured between the enclosing purlin structure and the steel pipe piles till water pumping in the cofferdam is completed; the bearing platform / pier body is constructed, and backwater of the corresponding inner supporting systems is sequentially removed along with construction of the bearing platform / pier body till water flows out of the bearing platform / pier body; and dismantling the steel pipe pile cofferdam.

The invention belongs to the technical field of foundation pit construction, and particularly relates to a foundation pit supporting structure and a construction method thereof.The foundation pit supporting structure comprises a plurality of steel pipe piles arranged in the circumferential direction of a foundation pit at intervals, first lock catches are fixed to the outer sides of the steel pipe piles, Larsen steel sheet piles are arranged between the steel pipe piles, and second lock catches are fixed to the two sides of each Larsen steel sheet pile; the adjacent steel pipe piles and Larsen steel sheet piles are connected in a clamped mode through corresponding first lock catches and second lock catches, surrounding purlins are fixed to the inner sides of the multiple steel pipe piles, and concrete supporting pieces are arranged between the surrounding purlins and the corresponding Larsen steel sheet piles. The steel pipe piles are matched with the Larsen steel sheet piles, so that the rigidity of a supporting system is guaranteed while rapid supporting is guaranteed, and less garbage is generated after dismantling.

The utility model provides an auxiliary hoisting device for a roof purline module, which belongs to the technical field of steel structure installation and comprises a hoisting frame, a purline module fixing mechanism and a frame hoisting mechanism. The hoisting frame comprises an I-shaped foundation frame and reinforcing ribs; first lower lifting lugs are respectively arranged at two ends of the bottom surface of the I-shaped foundation frame in the length direction; a first upper lifting lug and a second upper lifting lug are respectively arranged at two ends of the top surface of the I-shaped foundation frame in the length direction; the purline module fixing mechanism comprises a first main rope body detachably connected with the first lower lifting lug, a first branch rope body and a second branch rope body, wherein the first branch rope body and the second branch rope body are detachably connected with the lower portion of the first main rope body. The first branch rope body and the second branch rope body are detachably fixed to the two ends of the side purline of the purline module respectively. By utilizing the auxiliary hoisting tool, the problems that in the prior art, an auxiliary hoisting tool directly hoists a single purline through a hook and is mostly used for hoisting a small-span roof, the purline rotates and shakes, the hoisting speed is low and the like can be solved.

The present application relates to steel structure erection technical field, concretely is a kind of steel beam jacking equipment for steel structure factory building assembly.It includes mainframe, adjusting assembly, adjusting track group;The adjusting assembly of the present application can effectively fix steel purlin and support it on roof, and the adjusting assembly of the present application can adjust the front and back positions of steel purlin, can rotate steel purlin by a certain angle to avoid interference with roof frame during jacking process, can also tilt purlin in a row by a certain angle to adapt to the angle of roof frame, under the support of adjusting assembly, workers only need to adjust purlin to installation position to start installation, and can install multiple purlin at a time, it is convenient and fast, greatly improve installation efficiency;The adjusting track group of the present application can use the support column of original building as reference to accurately position the whole system;The adjusting assembly of the present application can move front and back purlin along its length direction, make its head and tail connection without gap, to ensure its installation accuracy.

The invention relates to the technical field of Larsen steel sheet pile construction, and discloses a Larsen steel sheet pile cofferdam construction method suitable for a deepwater area, which comprises the following construction steps: 1) arranging a construction platform; (2) four positioning piles are driven into the construction position to form a construction area; 3) arranging a guide frame in the construction area, wherein the guide frame is provided with a guide arm; (4) a plurality of Larsen steel sheet piles are driven along the guide arms, the bottoms of the Larsen steel sheet piles extend into the solid soil layer, and adjacent Larsen steel sheet piles are arranged in a sealed mode; (5) enclosing purlins are arranged on the pile rows, and steel supports are arranged between the enclosing purlins to form an inner supporting structure; (6) water and sludge in the construction area are sucked till the solid soil layer is exposed at the bottom, and the Larsen steel sheet pile cofferdam is formed by the multiple Larsen steel sheet piles and the multiple inner supporting structures; the bottoms of the Larsen steel sheet piles extend to a solid soil layer and are arranged in a sealed mode, and a plurality of inner supporting structures are arranged, so that the water stopping performance of the cofferdam is improved, and meanwhile the stability and the water flow impact resistance are enhanced.

The invention relates to a comprehensive construction method for a Larsen steel sheet pile cofferdam of an anti-typhoon cross-sea bridge. The comprehensive construction method comprises the steps that firstly, BIM and VR application is conducted; 2, construction preparation is conducted; thirdly, a first enclosing purlin is installed, and steel sheet piles are driven in an inserted mode; fourthly, steel enclosing purlins and water stops are installed; 5, bottom sealing concrete is constructed; sixthly, the elevator cage is installed; seventhly, a bearing platform is constructed; eighthly, dismantling construction is conducted; ninthly, the steel sheet piles are recycled; and step 10, intelligent monitoring application. The construction challenges caused by complex landforms at the bottom of the foundation are effectively overcome by adopting targeted construction measures, the resistance to typhoon and storm impact is enhanced, corresponding improvement measures are integrated in all construction processes, and positive effects are achieved.

An anchoring bracket that secures a safety line includes a pair of anchoring plates, a ridge cap member, and at least one D-ring connector. Each of the anchoring plates is hingedly connected the ridge cap member on opposite sides thereof and the D-ring connection member is rotatably connected to a top side member of the ridge cap member. Each of the anchoring plates includes first and second leg members having a plurality of boreholes therethrough. The anchoring plates may be opened to be placed on a flat roof or over a roof peak and secured to one or more structural members of the roof, e.g., roof rafters, trusses, joists, or Z-purlins, as well as portions of the roof decking, using appropriate fasteners in accordance with one or more safety regulations or protocols, e.g., local, OSHA, ANSI.

The invention relates to the technical field of pit foundation supporting, in particular to an open cut culvert foundation pit supporting structure. Comprising two columns of fences which are horizontally and oppositely arranged; the two columns of hanging plates are correspondingly matched with the two columns of fences, and the multiple hanging plates in each column are sequentially distributed and connected to the top ends of the single columns of fences in a lap joint mode; a plurality of groups of inner support assemblies are arranged, and one group of inner support assembly is connected between every two scraper blades, which are horizontally opposite to each other, in the two rows of hanging plates; two groups of enclosing purlin assemblies; the enclosing purlin assembly comprises a plurality of enclosing purlin plates which are horizontally inserted into the end pieces in a one-to-one correspondence and sliding mode, the adjacent enclosing purlin plates are matched in an inserted mode, and locking and clamping pieces used for connecting the adjacent enclosing purlin plates in series and locking the adjacent enclosing purlin plates are inserted between the adjacent enclosing purlin plates; according to the foundation pit supporting structure provided by the invention, the convenience and rapidness of supporting assembly lap joint and disassembly are improved, the difficulty of assembly and disassembly is reduced, meanwhile, the integrity and flexibility of the supporting structure are improved, damage and deformation of the supporting structure are avoided or reduced, and the reusable rate of the supporting structure is ensured.

The utility model discloses a lifting appliance for rapidly lifting wall surface purlines, which belongs to the technical field of house building construction, a plurality of purlines are arranged along the height direction of the wall surface, the lifting appliance comprises a hanging rope, a plurality of lifting points are arranged on the hanging rope along the length direction, and the hanging rope is connected with lifting equipment; the hanging point is arranged on the hanging rope, the fixed end of the hanging assembly is connected with the hanging point, the movable end of the hanging assembly is detachably connected with the purline, and the two hanging assemblies which are symmetrically arranged relative to the center of the hanging rope are used for hanging one purline. According to the lifting appliance, the purlines are bound through the movable ends of the hanging assemblies on the hanging rope, the two hanging assemblies symmetrically arranged about the center of the hanging rope are used for hanging one purline, the lifting appliance is used for hanging multiple purlines at a time, the lifting appliance is used in cooperation with hoisting equipment, and safe, efficient and low-cost lifting of the wall purlines is achieved.

The utility model relates to photovoltaic support technical field, concretely is a kind of photovoltaic support roof waterproof type fixed buckle, it includes: purlin, the top surface of purlin is equipped with C-shaped frame, the top surface of C-shaped frame is equipped with photovoltaic board;Clasp structure is installed on the purlin, the clasp structure includes U-shaped frame, the bottom end outside of purlin is sleeved in U-shaped frame, the upper end of U-shaped frame is equipped with L-shaped clamping slot, the inside top surface of U-shaped frame is integrally formed with positioning ring, the outside of positioning ring is equipped with corrugated rubber sleeve.The utility model sets up corrugated rubber sleeve and metal sleeve, can be set in the outside of abutting bolt, and the upper end of corrugated rubber sleeve abuts to the bottom surface of purlin, rainwater on the surface of purlin cannot drip to the outside of abutting bolt and U-shaped frame junction, can make between abutting bolt and U-shaped frame keep smooth, prolong the service life of clasp structure, guarantee the dismounting convenience of clasp structure.

The present application relates to the technical field of photovoltaic panel assembly installation, and particularly relates to a combined device facilitating the fixed installation of a photovoltaic panel and a structural purlin, comprising an upper pressing block, a U-shaped bolt and a lower back pressing plate, the upper pressing block comprises an L-shaped block, an inclined wing plate and an edge pressing block, the inclined wing plate is fixed on the top end sidewall of the L-shaped block, the edge pressing block is fixed on the bottom end sidewall of the L-shaped block, the inclined wing plate is located on one side of the L-shaped block, and the edge pressing block is located on the other side of the L-shaped block; two long holes are formed in the bottom plate of the L-shaped block, two round holes are formed in the lower back pressing plate, the two round holes correspond to the two long holes one by one, the two ends of the U-shaped bolt pass through the corresponding long holes and round holes respectively, and the two ends of the U-shaped bolt are both threadedly connected with nuts. The present application solves the problem that the long bolt in the prior art leads to poor stability and easy damage to the edges of photovoltaic components, and improves the installation reliability and safety of the photovoltaic panel on an inclined surface.

The utility model belongs to the technical field of greenhouse building structures, and particularly relates to a greenhouse wind-resistant building steel structure which comprises a greenhouse foundation, a main steel frame column is installed at the upper end of the greenhouse foundation through bolts, a main steel frame beam is installed on the back face of the main steel frame column through bolts, and an end wall purline is welded to the front face of the main steel frame column. A wind-resistant stand column is installed at the upper end of the greenhouse foundation through a bolt, and the wind-resistant stand column is connected with an end wall purline in a welded mode or in a bolted mode. According to the scheme, through cooperative use of the wind-resistant stand columns, the horizontal pressure beams, the inclined horizontal pull rods and other structures, the stability of the whole structure is enhanced, the wind-resistant capacity of the multi-span greenhouse end wall is effectively improved, safe use of the greenhouse under the severe weather condition is guaranteed, sunlight shielding is reduced through the small end wall purline section, and the service life of the greenhouse is prolonged. The lighting amount of the greenhouse is increased, more sufficient lighting conditions are provided for growth of crops in the greenhouse, and the yield and quality of the crops are improved.

The application relates to the technical field of rectangular pipe construction, in particular to a construction device for rectifying deviation of a rectangular pipe after the pipe is penetrated, which comprises Larsen steel sheet piles, the Larsen steel piles are arranged on opposite sides of a pipe joint, a dewatering well is arranged outside the two steel sheet piles, a steel enclosing purlin is fixedly connected to one side of the Larsen steel sheet pile close to the pipe joint, steel supports are arranged between the steel enclosing purlins on the same horizontal plane, the two ends of the steel support are respectively connected to the steel enclosing purlins located at the two ends of the steel support, a bracket is welded below the steel enclosing purlin, a concrete limiting block is arranged at a lower chamfered corner of the pipe joint, a concrete cushion beam is arranged on the side of the pipe joint away from the concrete limiting block and close to the upper side, a second steel enclosing purlin is arranged between the concrete cushion beam and the pipe joint, a jack is arranged between the second steel enclosing purlin and the concrete cushion beam, and a steel sheet pad is arranged between the jack and the concrete cushion beam, so that the problem of pipe joint rotation correction after the rectangular pipe construction is completed in an underground pipe joint project is solved.

The present invention discloses a gutter connection structure between a skylight and a metal roof, comprising a gutter, a skylight, and a curved roof panel. The bottom end of the gutter is arranged on the main purlin, and side wall square tubes are arranged on both sides of the gutter. The bottom ends of the side wall square tubes are welded to the main purlin, and the edges of the gutter overlap the top surfaces of the side wall square tubes. A full-length fixing piece is provided on the inner wall of the gutter, and the full-length fixing piece is connected to a shedding plate via a full-length aluminum alloy buckle strip. The lower end of the shedding plate is bent inwardly into an acute angle, and the upper end of the shedding plate cooperates with the skylight or the curved roof panel. The gutter connection structure between the skylight and the metal roof of the present invention is ingeniously designed and highly waterproof. It effectively solves the problem that when the gutter is located between the skylight and the metal roof, rainwater accumulates and easily leaks, causing rainwater to flow back into the insulation layer of the roof or the lower end of the curtain wall glass of the skylight, causing damage to the building.

The invention discloses a parallel septic tank construction method applied to double-layer deep and thick sludge geology, and relates to the technical field of building construction, the method comprises the following steps: S1, construction preparation; s2, supporting construction; s3, foundation reinforcement construction; s4, implanting a core pile: vertically pressing the core pile into the center of the stirring pile before initial setting of the stirring pile; s5, inner supports are installed, specifically, enclosing purlins and steel supports are constructed; s6, layered excavation is conducted, specifically, after the stirring piles reach the design strength, earthwork layered excavation is conducted till the foundation is reached; s7, pouring a support changing plate: pouring a reinforced concrete support changing plate at the bottom of the foundation pit; s8, parallel septic tank foundation construction is conducted, specifically, reinforcing steel bars are bound on the support changing plate, a formwork is erected, and a septic tank foundation is poured; s9, dismantling the inner support: dismantling the enclosing purlin and the steel support after the support plate to be replaced and the parallel septic tank foundation reach the design strength; s10, mounting a septic tank: hoisting the prefabricated septic tank in place; s11, the steel sheet piles are dismantled; and S12, septic tank backfilling construction is conducted. The construction method has the effect of improving the construction quality.

The utility model provides a prestress-adjustable web member for supporting a foundation pit string truss, the bottom of the web member is provided with a movable head, and the left side and the right side between a movable end and a fixed end of the movable head are respectively provided with a jack; the bottom of the jack is fixed to the base of the fixed end, and a piston rod of the jack abuts against the surface of the bottom plate of the movable end. The jack is installed on the adjustable head at the bottom of the web member, the elongation of the adjustable head is adjusted through the jack, and therefore adjustment of prestress can be achieved in the installation stage or the use stage, and effective supporting is provided for the foundation pit enclosing purlin. Furthermore, the base and the bottom plate are connected through a locking mechanism. After the jack is pressurized, locking and pressure maintaining are conducted through the locking mechanism, the jack can be removed after pressure maintaining, operation is convenient and accurate, and the pressure is controllable.

The invention relates to the technical field of ocean engineering, and discloses a special-shaped steel pipe pile combined structure for complex seabed terrains, which comprises a plurality of steel pipe pile bodies and a seabed detector, and lock catch connecting mechanisms are arranged on the side surfaces of the plurality of steel pipe pile bodies; the lock catch connecting mechanisms are used for connecting and locking every two of the multiple steel pipe pile bodies, purlin frames are arranged on the inner sides of the multiple steel pipe pile bodies, a detection system is arranged in the seabed detector, and the detection system comprises a multi-beam sounding module used for obtaining three-dimensional topographic data of the seabed; the acoustic disturbance transmitting module is used for transmitting an acoustic disturbance pulse to a target point of the seabed; and the tracking imaging sonar module is used for collecting a seabed dynamic response image sequence triggered by the acoustic disturbance pulse. According to the method, in-situ fine investigation and structure differentiation design are combined, engineering materials are distributed according to needs, and on the premise that the structure safety is guaranteed, the engineering cost is reduced, and the construction efficiency is improved.

The utility model relates to an anti-overturning structure of a steel cofferdam, the steel cofferdam comprises cofferdam piles, enclosing purlins are arranged on the inner walls of the cofferdam piles, anti-overturning piles are inserted into the inner sides and the outer sides of a plurality of cofferdam piles at certain intervals, and the insertion depth of the anti-overturning piles is larger than that of the cofferdam piles. The upper ends of the anti-overturning piles are higher than the top elevation of the cofferdam pile, the anti-overturning piles on the inner side are tightly attached to surrounding purlins on the inner wall of the cofferdam pile, a certain distance is formed between the anti-overturning piles on the outer side and the cofferdam pile, and the upper ends of the two opposite anti-overturning piles on the inner side and the outer side of the cofferdam pile are tensioned through a pull rod. The whole anti-overturning performance of the cofferdam can be guaranteed under the condition that the cofferdam piles cannot reach the designed buried depth.

The utility model relates to the technical field of foundation pit support, in particular to a foundation pit support structure convenient to disassemble and assemble, which comprises a plurality of steel sheet piles sequentially arranged on the inner side of a foundation pit in the circumferential direction of the foundation pit, and further comprises four enclosing purlins sequentially arranged on the inner sides of the steel sheet piles in the circumferential direction of the foundation pit. The eight supporting plates are located on the lower sides of the two ends of the surrounding purlins correspondingly and fixedly welded to the inner sides of the corresponding steel sheet piles; and the four reinforcing rib plates are located between every two adjacent surrounding purlins respectively, and each reinforcing rib plate is detachably connected with the two adjacent surrounding purlins and the two adjacent supporting plates. The supporting plates and the reinforcing rib plates are arranged, each reinforcing rib plate is detachably connected with the two adjacent enclosing purlins, and each reinforcing rib plate is detachably connected with the two adjacent supporting plates, so that the foundation pit support structure is convenient to disassemble and assemble, meanwhile, the structural integrity of the steel sheet piles does not need to be damaged, the bearing capacity of the steel sheet piles is guaranteed, and the using effect is good.

The utility model relates to the technical field of glass fiber reinforced plastic purline manufacturing, in particular to a glass fiber reinforced plastic purline forming device which comprises a bearing frame, a driving assembly, a stamping plate, a pop-up assembly, a limiting assembly, sliding frames and a releasing assembly, and the number of the sliding frames corresponds to that of sliding plates. The action ensures that the pop-up plate is in a stable downward pressing state in the stamping process, the stability of the stamping process can be ensured, the stamping plate moves upwards, firstly, contact between the supporting rod and the sliding column is released, a first spring has upward elastic force, but the sliding column is still clamped by the baffle, so that the pop-up plate is still in the downward pressing state; the situation that the pop-up plate acts too early when the stamping plate is not completely separated from a formed product is avoided, after the supporting rod ascends to a certain distance, the transverse rod relieves limitation on the release assembly, the release assembly releases the sliding column, the pop-up plate is pushed to pop up upwards, and the formed glass fiber reinforced plastic purline is ejected out of the stamping groove.

The invention discloses a drainage system for a large-span arc-shaped metal roof of a coal shed and a construction method.The drainage system comprises a buttress, a top plate is arranged at the top of the buttress through a main purline, the main purline is obliquely arranged, the bottom end of the main purline is close to the buttress, and a triangular supporting frame is fixed to the outer side of the buttress; the surface of the triangular supporting frame is provided with a water diversion ditch, and the water diversion ditch is provided with a communicating groove corresponding to the top plate. The inner bottom surface of the gutter is inclined, the lower end of the inclined surface is far away from the buttress, and one end of the gutter is provided with an inclined panel extending downwards. The large-span roof drainage device has the advantages that rainwater is guided to the diversion ditches on the triangular supporting frame through the slope of the roof, the main diversion pipe and the secondary diversion pipe are connected with the main diversion holes and the secondary diversion holes in the diversion ditches respectively, graded collection and efficient diversion of the rainwater are achieved, smooth drainage of a large-span roof is guaranteed, and accumulated water is reduced.

The utility model discloses a modularized steel enclosing purlin assembly convenient to quickly install, which comprises a steel sheet pile, a plurality of steel enclosing purlins and a plurality of steel enclosing purlins, the I-shaped steel enclosing purlins are transversely arranged on the inner sides of the steel sheet piles; the steel support is horizontally arranged between the I-shaped steel enclosing purlins, the steel support comprises a fixed head, a movable head and a supporting column, and the supporting column is arranged between the fixed head and the movable head; the bearing plate is clamped and fixed on the I-shaped steel enclosing purlin in a U shape and is used for bearing the steel support; rectangular mounting plates are arranged at the end of the fixed head and the end of the movable head, a U-shaped sliding rail is arranged on the bearing plate, an opening of the sliding rail faces upwards, and the mounting plates can be embedded in the sliding rail in a sliding mode. According to the steel enclosing purlin assembly, the bearing plates fixed in a clamped mode are arranged, the bearing plates are used for bearing the steel supports, rapid positioning and connection between the I-shaped steel enclosing purlins and the steel supports are achieved, and the construction convenience and the use efficiency of the whole steel enclosing purlin assembly are improved.

The invention relates to the technical field of civil engineering foundation pit supporting, in particular to a hoisting method for a large steel structure in semi-cover excavation construction of a subway station. Comprising an open excavation area and a cover excavation area; the steel structure is conveyed into the foundation pit from the open excavation area through a crane and conveyed to the cover excavation area from the interval area between the middle pile bodies; the position of the walking vehicle is adjusted, and the height of the carrier roller frame is adjusted through the lifting mechanism to correspond to the position of the conveyed steel structure; after the steel structure penetrates through a steel rope ring connected with the first electric hoist, the steel structure is conveyed to the small trailer, and the left end of the steel structure is located on the left side of the small trailer; the small trailer carries the steel structure to walk leftwards for a certain distance and is lifted by the steel rope ring connected with the electric hoist, and the small trailer and the steel structure jointly convey the steel structure to the steel enclosing purlin and are manually connected; after the steel structure in the area is installed, the walking beam is started to move forwards along the hanger rail, and the chain drives the walking vehicle to move to the next construction position at the same time. The method is simple in process, convenient to operate, high in construction efficiency and small in resource waste.

The application relates to a super column pouring formwork system and a construction method, and belongs to the field of concrete building construction, which comprises a formwork, a reinforcing framework and a supporting surrounding purlin, the formwork is located on one side of the reinforcing framework, further comprises a tension screw rod, the reinforcing framework comprises a steel column cylinder, the supporting surrounding purlin is located on the side of the formwork away from the reinforcing framework, one end of the tension screw rod is connected with the steel column cylinder, the other end penetrates through the formwork and the supporting surrounding purlin and is threadedly connected with a tension nut, and the tension nut is in abutment with the side of the supporting surrounding purlin away from the reinforcing framework. In the concrete pouring process, the tension screw rod is connected with the reinforcing framework, the length requirement of the tension screw rod is reduced, the material consumption is low, and the effect of reducing the material cost is achieved.

The application discloses a kind of steel structure roof bar automatic installation equipment and method, the equipment includes bar discharge bin;Bar limiting discharge device being arranged below the bar discharge bin;Mobile trolley being arranged below the bar limiting discharge device;Installation mechanical arm being arranged on the mobile trolley;And nut automatic discharge bin and nut tightening device being arranged on the both sides of the mobile trolley, after the bar is installed to the hole position between purlin by the mechanical arm, the nut stored in the nut automatic discharge bin is automatically discharged into the nut tightening device, the hole position of automatic positioning bolt is tightened, and the installation of bar is completed.The equipment realizes automatic positioning and automatic installation function, greatly improves the efficiency of small bar installation of roof, reduces the work intensity of construction personnel, avoids the security risk brought by personnel high-altitude operation, realizes the intelligentization and automation of small bar installation.

This invention relates to a purlin connection structure, comprising a support column, a shaped purlin, supports, and purlin brackets. The supports are located at both ends of the shaped purlins. Adjacent shaped purlins and supports are connected to each other via purlin brackets. The connection point of adjacent shaped purlins is located on the support column. The shaped purlin has a G-shaped cross-section. The shaped purlin of this invention is G-shaped, and the shaped purlin and support fit together. After welding, they form a rectangular closed cross-section at the connection point, giving the connection point better torsional stiffness and overall load-bearing capacity, and increasing the cross-sectional strength.

The utility model discloses a transformer substation roof photovoltaic support foundation, including purlin and set above the bearing base, and are connected through the compression fixed structure both, the photovoltaic support is hinged on the bearing base, and is equipped with adjusting mechanism between both, and adjusting mechanism includes two groups of adjustable photovoltaic support angle's adjusting structure of opposite setting, and the fastener with locking function is equipped on adjusting structure, the non -penetrating connection of bearing base and purlin is realized through the compression fixed structure, and the clamping force of compression bolt only passes through the pre -tightening support and compression board fixed, and need not to carry out the penetrating type anchoring or welding operation to the waterproof, anticorrosive layer of transformer substation roof, fundamentally avoided the damage of traditional installation mode to the original structure of roof, through the adjustable angle adjusting structure of setting two groups, can through the sliding sleeve or telescopic link flexible adjustment photovoltaic support's inclination angle, makes photovoltaic board can adapt to the light condition under different scenes, has improved photovoltaic system's power generation efficiency significantly.

The invention discloses a purline lateral displacement detection device, and relates to the field of purline detection. The clamping mechanism comprises a plurality of containing frames arranged in the width direction of the supporting frame at intervals, the two ends of each containing frame are rotationally installed on the supporting frame, a through part is arranged at the bottom of each containing frame, a sliding plate moving in the length direction of each through part is arranged in each through part, and supporting plates are detachably arranged at one end of each sliding plate and one end of each containing frame and used for being connected with a purline. Limiting plates moving in the width direction of the containing frame are arranged on the two sides of the containing frame and used for limiting the side edges of the purlins. The pressure applying mechanism comprises a plurality of top frames which are located above the containing frame and coaxially and rotationally arranged, a plurality of first linear mechanisms moving in the length direction of the top frames are arranged on the top frames, the moving direction of the moving ends of the first linear mechanisms is perpendicular to the rotating axis of the top frames, and the moving ends are provided with pressing blocks used for applying pressure to the purlins in the side direction. The purlines with different deflection angles can be loaded and detected, and the detection accuracy is ensured while the tool cost is reduced.

The utility model relates to a circular steel structure hanging box for bridge construction in sea, which comprises a reinforced concrete bottom plate and a plurality of steel hanging box side wall plates, the reinforced concrete bottom plate is sleeved on an erected engineering steel pipe pile, a plurality of vertical I-shaped steel main ribs are arranged on the inner sides of the steel hanging box side wall plates at fixed intervals along the circumferential direction, and the vertical I-shaped steel main ribs are arranged on the outer side of the steel hanging box side wall plates. A plurality of annular steel plate stiffening ribs are fixedly arranged on the inner sides of the steel hanging box side wall plates at intervals in the vertical direction, the steel hanging box side wall plates are fixedly installed on the periphery of the reinforced concrete bottom plate in the circumferential direction, and side wall partitioning connecting plates are arranged on the inner sides of the splicing positions of the adjacent steel hanging box side wall plates. And the side wall partitioning connecting plates are fixedly connected with the adjacent side wall plates of the steel hanging box through bolts respectively. According to the rectangular hoisting box, the installation procedures of the enclosing purlins and the annular supports are reduced, the stress performance of a traditional rectangular hoisting box is improved, rapid and convenient connector connection and sealing water stop are achieved, and the purposes of saving engineering materials and reducing the hoisting weight are achieved by changing the thickness of the bottom plate.

This invention belongs to the field of building engineering quality inspection technology, and discloses a defect detection method for aluminum-magnesium-manganese metal roofs. This method is designed for phased construction and acceptance scenarios of metal roofs. Based on the design documents, it establishes inspection benchmarks such as panel type parameters, vertical joint parameters, purlin axis parameters, fixing seat arrangement parameters, moisture-proof layer overlap parameters, and insulation layer laying parameters. It integrates exposed base images during the construction phase, visible light images and infrared temperature images or elevation data during the sealing phase, and completes registration mapping, measured parameter extraction, abnormal area projection overlap analysis, and consistency verification under a unified roof coordinate system, realizing traceable output of defect type, defect coordinates, and defect level.