41results about How to "Control construction quality" patented technology

The invention relates to a fabricated track structure facilitating vibration reduction upgrading and a construction method. According to the fabricated track structure convenient for vibration reduction upgrading, the prefabricated track plate is provided with a first supporting surface and an arrangement space, and the top surface of the base is provided with an embedded sleeve, so that a supporting adjusting piece or a special vibration reduction component can be detachably connected between the prefabricated track plate and the base through a fixing bolt; therefore, the replacement from the support adjusting piece to the special vibration reduction component can be realized, that is, common vibration reduction can be upgraded to special vibration reduction; and the corners are arranged through the prefabricated track plates, so that the second supporting surfaces of the prefabricated track plates are lower than the first supporting surfaces, and then the anti-vibration pads can be laid between the prefabricated track plates and the base after the supporting adjusting pieces are dismounted, namely common vibration reduction can be upgraded to high-level vibration reduction. According to the assembly type track structure facilitating vibration reduction and upgrading, conversion or upgrading from common vibration reduction to high-level vibration reduction and special vibration reduction can be achieved at the same time. And compared with the prior art, the replacement efficiency is high.

The invention discloses a waterproof detection device for a joint of a fabricated wallboard. The waterproof detection device comprises an attachment bracket fixed on a wall between adjacent windows; the spraying device is arranged on the attachment bracket and is connected with a water source; and the spraying control device is connected with the spraying device. The invention further discloses an assembly type wallboard joint waterproof detection method which comprises the following steps: 1) after assembly type wallboard joint construction is completed and a sealant is cured, selecting a joint to be detected on the outdoor side of a wall body; (2) the attachment support is fixed to the wall between the adjacent windows, the spraying device is made to directly face the joint to be detected, and the spraying device is connected with a water source; (3) a spraying control device adjusts proper water pressure and water flow, a spraying device is controlled to spray water to the selected joint, and the continuous water spraying time is not less than 5 min; and (4) after water spraying is finished, whether leakage exists at the joint seam or not is checked on the indoor side of the water spraying part, and if leakage exists, the leakage position and characteristics should be recorded.

The invention provides a foundation treatment process, and relates to the technical field of foundation treatment. The foundation treatment process specifically comprises the following steps: S1, geological survey and three-dimensional modeling; s2, establishing a micro-seismic monitoring system; s3, applying a self-healing material; s4, construction of a rotary drilling rig; s5, performing real-time construction monitoring and adjustment; s6, detecting the hole forming quality of the pile foundation; s7, concrete is poured, and a self-healing material is injected; and S8, geological treatment and acceptance after construction. Safety and accuracy of the construction process can be guaranteed by monitoring changes of underground rock strata and karst caves in real time, the construction quality of each pile foundation is guaranteed through data analysis and dynamic adjustment of a construction scheme, self-repairing of the material can be achieved through the fungus self-healing cement-based material, durability and stability of the pile foundations are enhanced, and the construction quality of the pile foundations is improved. The long-term effect of foundation treatment is improved, the later maintenance cost is reduced, the pile foundation construction quality under the complex karst geological condition can be ensured, the construction efficiency is improved, the cost is reduced, and the engineering safety and stability are ensured.

The utility model provides a catenary tunnel embedded chute detection device which comprises a moving plate, moving wheels are arranged at the four corners of the bottom of the moving plate, an adjusting platform is arranged on the moving plate, a detection plate is installed above the adjusting platform, two sets of laser devices are installed on the detection plate in a sliding mode, and the two sets of laser devices are arranged on the adjusting platform. A graduated scale is arranged on the side face of the detection plate, a reserved hole used for containing a gradienter is formed in the upper surface of the detection plate, and an adjusting assembly used for adjusting the detection plate to be horizontal is arranged between the adjusting platform and the movable plate. The device is simple in structure and reasonable in design, can effectively measure the width of the pre-embedded chute, greatly improves the detection efficiency of the overhead line system reserved tunnel chute, simplifies the on-site detection and adjustment process, and enables the detection and adjustment process to be accurate, simple and efficient.

The invention discloses a construction real-time monitoring system and control method for a connecting rod type cement mixing pile, and the system comprises but is not limited to a drill rod monitoring module, a data collection module, a data processing module and a real-time feedback control module. Whether the construction quality of the extension rod type cement mixing pile meets the expected requirement or not is judged by obtaining real-time data of construction technical parameters, and therefore real-time feedback control over construction equipment is achieved. The method comprises but not limited to determination of a function relationship among monitoring data through a manufacturability pile forming test, axis consistency monitoring during rod extension, depth, speed and rotating speed monitoring and control during drilling down or lifting of a drill rod, cement mixing amount monitoring and control during guniting of the drill rod, and pile body quality evaluation. According to the method, the construction quality problems of insufficient pile length, insufficient cement mixing amount, poor pile body uniformity, inconsistent drill rod axes and the like possibly occurring in the extension rod type cement mixing pile are monitored in real time, construction technical parameters are adjusted in time, and then the construction quality is controlled.

This invention discloses a prefabricated V-shaped rigid frame bridge and its construction method. The prefabricated V-shaped rigid frame bridge includes: pier foundations, at least two V-legs, and a main girder. The V-legs are composed of multiple prefabricated segments stacked together, with the bottom fixed to the pier foundation via a post-cast section and the top having a cast-in-place section. The main girder includes a No. 0 segment beam and multiple symmetrically arranged prefabricated segments. The prefabricated segments of the main girder are constructed using the inverted beam method, i.e., the top slab, then the web, and finally the bottom slab are prefabricated in sequence. The cast-in-place section of the No. 0 segment beam is integrally cast with the top cast-in-place section of the V-legs. This invention achieves rapid and standardized prefabrication and assembly of variable cross-section beams and V-legs through prefabrication and inverted beam method templates, shortening the construction cycle, reducing the risks of high-altitude operations and traffic interference, improving quality and durability, and possessing economic and environmental advantages.

The utility model discloses a stay bar type photovoltaic assembly penetrating conductive buckle, which belongs to the technical field of photovoltaic system grounding, and comprises two penetrating sheets which are rotatably connected and a connecting rod mechanism which is connected with the two penetrating sheets, the lower ends of the penetrating sheets are provided with penetrating parts, and the penetrating parts are connected with the connecting rod mechanism. And the penetrating parts at the lower ends of the two penetrating pieces are driven by the connecting rod mechanism to expand outwards and respectively pierce the coating films of the two adjacent photovoltaic panels, so that the two adjacent photovoltaic panels are electrically connected. When two adjacent photovoltaic panels need to be electrically connected, only the conductive buckle needs to be placed in the gap between the two adjacent photovoltaic panels, and then the connecting rod mechanism is operated, so that the step of loosening and turning screws to fix wires on site is reduced, and the risk in construction is reduced.

The utility model provides a large-tonnage anchor cable tensioning base plate and an anchor cable, and belongs to the technical field of supporting engineering. The large-tonnage anchor cable tensioning base plate comprises an angle adjusting plate assembly and an anchorage device plate, a first through hole allowing a steel strand to penetrate through is formed in the middle of the angle adjusting plate assembly, and a first positioning structure is arranged on the outer side face of the angle adjusting plate assembly; a second through hole for the steel strand to penetrate through is formed in the middle of the anchorage device plate, and a second positioning structure is arranged on the inner side face; and the first positioning structure and the second positioning structure are matched with each other, so that positioning is carried out when the angle adjusting plate assembly and the anchorage device plate are stacked, and the second through hole is aligned with the first through hole. The anchor cable comprises the large-tonnage anchor cable tensioning base plate and a steel strand fixed on the large-tonnage anchor cable tensioning base plate through an anchorage device. Deformation of the tensioning base plate is reduced, construction quality of the anchor cable is guaranteed, potential safety hazards are reduced, and installation is convenient.

The invention belongs to the technical field of concrete crack repairing, and discloses a magnetic type concrete surface repairing device and a using method thereof.The magnetic type concrete surface repairing device comprises a moving device, a magnetic device and a concrete surface repairing device, a magnetic attraction assembly; a monitoring assembly; a material supplementing assembly; a trowelling assembly; and the remote control equipment is in telecommunication connection with the mobile equipment and is used for controlling the mobile equipment to move along the surface of the concrete structure. The magnetic attraction assembly is adopted to attract the mobile equipment and the reinforcing steel bars in the concrete structure so that the repairing device can be attached to the surface of the concrete structure, the remote control equipment controls the mobile equipment to move on the surface of the concrete structure in an attached mode, and then a repairing area is found through the monitoring assembly; a repairing material is supplemented to the repairing area through the material supplementing assembly, and then trowelling treatment is conducted through the trowelling assembly, so that repairing of the surface of the concrete structure is achieved. The problem of repairing the surface of the side wall or the bottom of the large-size concrete structure located at the high position can be well solved, practicability is high, and manpower is saved.

The invention discloses a real-time monitoring system and control method for the construction of a connecting rod type cement mixing pile. The system includes but is not limited to a drill rod monitoring module, a data acquisition module, a data processing module and a real-time feedback control module. The system acquires real-time data of construction technical parameters to determine whether the construction quality of the connecting rod type cement mixing pile meets the expected requirements, thereby realizing real-time feedback control of the construction equipment. The method includes but is not limited to determining the functional relationship between monitoring data through a process pile forming test, axis consistency monitoring when connecting the rod, depth, speed and rotation speed monitoring and control when the drill rod is drilled or lifted, cement content monitoring and control during drill rod grouting, and pile body quality evaluation. The invention realizes real-time monitoring of construction quality problems that may occur in the connecting rod type cement mixing pile, such as insufficient pile length, insufficient cement content, poor pile body uniformity, inconsistent axis lines of each section of the drill rod, and timely adjustment of construction technical parameters to control the construction quality.

The utility model discloses an outdoor intelligent maintenance device for a small prefabricated part, which relates to the technical field of maintenance of prefabricated parts and comprises a support frame, a top frame is fixedly mounted on the top of the support frame through bolts, a water tank is arranged on the outer side of the support frame, a first spraying pipe is arranged on the outer side of the water tank, and a first water valve is arranged on the outer side of the first spraying pipe. A plurality of first spray heads are arranged on the outer side of the first spray pipe. According to the outdoor intelligent curing equipment for the small prefabricated parts, the curing spraying equipment can be intelligently controlled according to the temperature and humidity of a curing area in a partitioned mode, the curing environment of the small prefabricated parts in all the partitions can be directly controlled, then the construction quality of the small prefabricated parts is effectively controlled, the structure is simple, operation is convenient, the curing efficiency can be greatly improved, and practicability is high. Through cooperation of the arranged fixing block and the upper rotating column, the internal electronic switch controller can be protected, and the situation that the electronic switch controller is easily affected by dust and water vapor, and consequently the electronic switch controller is easily damaged is avoided.

The invention relates to the technical field of berthing component installation, in particular to a berthing component suspended formwork installation device which is characterized in that a cantilever beam is fixed to a pile cap through deformed steel bars, the top end of the cantilever beam is slidably connected with a sliding plate, the sliding plate slides in a sliding groove formed in the inner side of the top end of the cantilever beam, and the top end of the sliding plate is fixedly connected with a second hydraulic rod; a transverse plate is fixedly connected to the top end of the second hydraulic rod, a reverse hanging beam is fixedly connected to the top end of the transverse plate, locking pieces are fixedly connected to the front side and the rear side of the top end of the reverse hanging beam, and the locking pieces are hollow. According to the method, the double-combination process of rough installation and fine adjustment is adopted, that is, a ship berthing component and a hanging basket are moved through a crane ship, are extensively installed on a reverse hanging beam and are temporarily fixed, then horizontal and vertical reverse-direction fine adjustment is conducted through a first hydraulic rod and a second hydraulic rod on the reverse hanging beam, and positioning is more accurate.

The utility model relates to the technical field of electric wire laying, and disclose a kind of electric power cable core stranded wire laying device, comprising: base, the upper end one side of base is equipped with lifting mechanism, the lifting end of lifting mechanism is equipped with side frame, the outside one side of side frame is equipped with second driving motor, and the output end of second driving motor is located inside the side frame and is equipped with driving roller;Guide slot, open in the inside upper end both sides of side frame, the inside sliding installation of guide slot has guide block, and driving roller is rotatably installed between the guide block, and the upper end of guide block is equipped with first return spring;Telescopic side rod, set in the outside one side of side frame, the rear end of telescopic side rod is equipped with ring shell.The utility model lifting adjustment adapts to different height, elastic compression prevents cable deviation, blocking ring prevents loose and moves, quick-release structure simplifies cutting tool replacement, improves laying adaptability, precision and construction efficiency.

The invention relates to the technical field of concrete vibration quality monitoring, in particular to an intelligent system and method for monitoring the concrete vibration state and electronic equipment. The intelligent system comprises a current signal monitoring unit used for monitoring a current signal flowing through the vibrating rod and sending the current signal to a data processing unit; the data processing unit is used for converting the current signal received from the current signal monitoring unit into a voltage signal, coding the voltage signal to obtain first coded data of the voltage signal, and sending the first coded data to the vibration state recognition unit; and the vibrating state recognition unit is used for decoding the received first coded data, acquiring vibrating state information of the vibrating rod corresponding to the current signal, and converting the vibrating state information into a visual graph. According to the invention, an efficient, accurate and safe monitoring means is provided for concrete vibration operation, so that the overall quality and efficiency of construction are improved.

The invention relates to the technical field of bridge erection construction, in particular to a quick construction technology for a fabricated pier. The fabricated pier comprises a plurality of prefabricated pier columns, a plurality of protruding pieces are arranged on the outer side walls of the two ends of each prefabricated pier column, and the prefabricated pier columns are prefabricated parts; the cover beam is used for being arranged at the top of the prefabricated pier column, a first containing cavity is formed in the cover beam, the upper end of the prefabricated pier column extends into the first containing cavity, a first concave-convex structure is arranged on the portion, corresponding to the protruding piece, of the inner side wall of the first containing cavity, and concrete is poured between the first containing cavity and the prefabricated pier column; the bearing platform is used for being arranged at the bottom of the prefabricated pier column, a second containing cavity is formed in the bearing platform, the lower end of the prefabricated pier column extends into the second containing cavity, a second concave-convex structure is arranged on the portion, corresponding to the protruding piece, of the inner side wall of the second containing cavity, and concrete is poured between the second containing cavity and the prefabricated pier column; and the profile steel connecting pieces are connected with the two adjacent prefabricated pier columns.

The invention discloses a modularly assembled power transmission line tower structure, relates to the technical field of power transmission line tower structures, and is mainly used for solving the problems that a tower body of an existing power transmission line tower is poor in stability, and the construction quality of the power transmission line tower located in a field remote area is difficult to guarantee. According to the main structure, the tower comprises a tower body and a concrete base, the tower body comprises a plurality of tower body units which are sequentially arranged from top to bottom, each tower body unit comprises a core tube module and a plurality of main rod modules arranged around the core tube module, the core tube modules and the main rod modules in the tower body units are connected through connecting angle steel, and the adjacent main rod modules are connected through connecting angle steel. And the adjacent tower body units are coaxially and detachably connected through the connecting flange plates. The invention provides a modularly-assembled power transmission line tower structure which can improve the overall stability and lateral rigidity of a power transmission line tower and improve the construction efficiency through a rapid assembly technology among modules.

The utility model provides a kind of concrete pavement brick automation production line, and concrete pavement brick automation production line includes the product forming production line, transfer and transport production line, finished product palletizing production line and soaking curing production line in series successively;Product forming production line includes batching machine, mixer, cement metering storage tank, automatic forming machine and crusher;Transfer and transport production line includes adapter plate machine, laminating machine, first sub-mother ferry car, steel rail;Finished product palletizing production line includes second sub-mother ferry car and stacker;Soaking curing production line, including curing pool and automatic elevator installed in the curing pool.The utility model carries out optimization improvement to four processes in the concrete pavement brick production process, effectively integrates series use of mechanical automation equipment, creates a concrete pavement brick automation production line, and achieves good production effect: the concrete pavement brick automation production line realizes the automation production of entire technological process.

This invention provides a method for constructing retaining piles for a deep foundation pit within a pit, comprising the following steps: determining several sets of construction sequence groups by surveying the location of the retaining piles within the pit; for the preceding construction groups, excavating guide trenches and installing casings according to the construction sequence; constructing pile holes sequentially according to the construction sequence; each pile hole includes an empty drill section and an effective pile length section; connecting a simple hoist cage to a reinforcing cage at the bottom, lowering the simple hoist cage and reinforcing cage into the pile hole, with the top of the simple hoist cage connected to the pile hole opening; lowering a grouting pipe to pour underwater concrete to the top of the effective pile length section, and filling the empty drill section with fluidized solidified soil to the ground elevation; repeating steps 2-5 to construct the subsequent construction groups, forming the retaining piles within the pit; after the concrete has cured to the required standard, excavating the deep foundation pit and constructing the pit within the pit; and constructing a water-stop curtain on the outside of the retaining piles within the pit. This invention relates to the field of building construction technology and can solve the problems of high cost of backfilling empty drill sections with plain concrete and the easy cross-hole problems of backfilling empty drill sections with plain soil or yellow sand in the prior art.

The invention belongs to the field of cable accessory assembly, and discloses an auxiliary system and method for a high-voltage cable accessory assembly preprocessing process, and the system obtains an on-site cable construction state in real time through an assembly state detection information obtaining unit, matches offline data through combining with a base body posture estimation unit, and outputs a next operation prompt. The requirements of construction personnel for frequently checking construction standards and obtaining operation step information are reduced, the augmented reality scene construction unit can construct a cable three-dimensional model on site, accurate detection of a preprocessing process is realized, a detection result prompt is output in time, and the accuracy of each step of operation is further ensured; and the operation step prompting unit guides an operator to execute in sequence according to the prompting information until the preprocessing process is finished, so that the problem of inconsistent construction quality caused by the technical capability difference of the operator is effectively avoided, and the construction efficiency and the construction quality of the preprocessing process of the high-voltage cable accessory are greatly improved.

The utility model provides a prefabricated T-beam concrete pouring operation platform, and belongs to the technical field of highway bridge construction. The prefabricated T-beam concrete pouring operation platform comprises two supporting frames arranged side by side, a platform body is arranged between the tops of the two supporting frames, crawling ladders are arranged on the two sides of the platform body, the bottom ends of the crawling ladders are connected to the supporting frames on the same sides of the crawling ladders, and the front sides and the rear sides of the bottoms of the supporting frames are each provided with a pair of walking wheels. A rail groove is formed in the middle of the circumferential face of each walking wheel. The device has the advantages that constructors can conveniently conduct concrete pouring, vibrating and surface finishing work, operation is easy, potential safety hazards of up-down passing of the constructors are reduced, and the construction quality of roof steel bars is effectively controlled.

The utility model discloses an assembly type ancient building sill wall installation structure which comprises structural steel columns, sill walls installed between the structural steel columns and fixing parts connecting the structural steel columns and the sill walls, connecting embedded parts are arranged at the positions, corresponding to the fixing parts, of the sill walls, and the fixing parts comprise connecting bolts and L-shaped steel plates. One end of the L-shaped steel plate is connected with the connecting embedded part through the connecting bolt, and the other end is welded and fixed with the steel column. The sill wall is assembled and installed, the construction efficiency can be improved, the construction cost can be reduced, environmental pollution in the construction process can be greatly reduced, and the aim of green building is achieved.

The utility model discloses an assembly type ancient building wall body which comprises a face brick layer, an outer wall, a heat preservation layer and an inner wall, lower-layer steel bars are arranged in the outer wall, upper-layer steel bars are arranged in the inner wall, and the lower-layer steel bars and the upper-layer steel bars are connected through tie bars; groove-shaped openings are formed in the side faces, close to the outer wall, of face bricks of the face brick layer in a penetrating mode, and cement mortar is poured into the groove-shaped openings communicated between the face bricks and the groove-shaped openings communicated between the face bricks. A horse tooth rubbing-shaped connector is reserved at the position, located on the face brick layer, of the spliced adjacent wall bodies. The face brick layer, the outer leaf wall body, the heat preservation layer and the inner leaf wall body are prefabricated and formed together and can be directly hoisted during installation, the construction efficiency can be improved, the construction cost can be reduced, environment pollution in the construction process can be greatly reduced, and the purpose of green building is achieved; and meanwhile, the standard design and industrial production can also ensure the quality and safety of the building, and the construction quality problem caused by human factors is avoided.

The invention provides a real-time early warning device and method for abrasion of a cutter of a shield tunneling machine. The real-time early warning device for abrasion of the cutter of the shield tunneling machine comprises the shield tunneling machine and a tracer detector. The shield tunneling machine comprises a cutter head, a soil body sealing cabin, a spiral conveyor and a belt conveying area. The cutterhead comprises a plurality of characteristic cutters, cutter built-in pipelines and a plurality of tracers. Each characteristic cutter comprises at least one cutter, a cutter wear limit is arranged on each cutter, and each cutter is positioned on the front side of the cutter wear limit and is used for cutting a soil body. The cutter built-in pipeline is arranged on the rear side of the cutter abrasion limit of each cutter, and the tracer agent is sealed in the cutter built-in pipeline of each cutter in the cutters with different characteristics under pressure. When characteristic cutter abrasion reaches a cutter abrasion limit, a cutter built-in pipeline starts to spray a tracer agent to a soil body, the tracer agent enters a soil body sealing cabin along with soil residues and then is conveyed to a belt conveying area, and a tracer agent detector recognizes tracer agent material characteristics so as to determine the type and the position of an abraded cutter.

The utility model relates to the technical field of mud extruding machine, and disclose a kind of mud extruding machine for processing anhydrous stemming, including mud extruding machine body, and the top surface of mud extruding machine body is fixedly connected with crushing assembly.The mud extruding machine for processing anhydrous stemming, by the setting of temperature control component and temperature sensor, when using, temperature sensor is used to detect the temperature of anhydrous bubble mud inside flow-through pipe, heating plate is used to heat the circulating water inside water storage tank, semiconductor refrigerating sheet is used to cool the water inside water storage tank, start water pump, and the circulating water inside water storage tank is pumped to the inside of circulating pipe by water pump, and circulating water flows in the inside of circulating pipe, heat exchange is carried out to anhydrous stemming, so that the temperature of anhydrous stemming is kept in certain range, to ensure that it keeps optimum plasticity and stability in conveying and filling process, avoid the performance decline or construction quality problem caused by overheating or overcooling.

The utility model provides a drainage structure applied to a post-cast strip. The drainage structure comprises a plurality of water grate cover plates, a first baffle, a plurality of drainage grooves and a second baffle. A plurality of grate water cover plates are laid on the through ribs in the post-cast strip; the first baffle plate, the plurality of drainage grooves and the second baffle plate are sequentially overlapped to form a water collecting groove with an upper end opening; a plurality of connecting frames are arranged in the water collecting tank at intervals, and lifting points are symmetrically arranged on the connecting frames; opposite-pulling connecting pieces used for hanging the water collecting tank below the post-cast strip are arranged on the hanging points, and the upper ends of the opposite-pulling connecting pieces are hung on the grate water cover plate; the lower end of the water collecting tank is provided with a plurality of drainage pipe assemblies used for draining water flow in the water collecting tank into the water collecting well at intervals. According to the post-cast strip, the problems that the construction efficiency of the basement is low and the construction quality is possibly influenced due to the fact that external water flow is poured into the basement in an unorganized mode through the post-cast strip can be solved.

The application belongs to the technical field of adhesive and particularly relates to a single-component high-tolerance interface material and a preparation method and application thereof. The interface material is prepared by mixing pre-polymer A and pre-polymer B, wherein the pre-polymer A comprises 75-80 parts of polyether polyol, 14-18.5 parts of aromatic isocyanate, 0.5-1 part of ultraviolet absorber, 0.5-1 part of antioxidant and 4-8 parts of plasticizer; the pre-polymer B comprises 70-75 parts of polyether polyol, 20-23 parts of aliphatic isocyanate, 0.5-1 part of ultraviolet absorber, 0.5-1 part of antioxidant, 3-8 parts of plasticizer and 0.1-0.3 parts of environment-friendly catalyst. The material has high construction tolerance, can form a strength meeting the construction requirements of a topcoat after 24 hours of construction, and can maintain a surface slightly sticky state to the seventh day, during which the topcoat is constructed, and the interface material and the topcoat can form firm adhesion, and the adhesion is excellent and not easy to peel off.

This application discloses a stiffened box girder-column connection structure and its construction method, including a vertical box girder, a stiffened box girder, multiple transverse reinforcing bars, and vertical reinforcing bars. The vertical box girder includes a box-shaped steel column and corbels connecting the box-shaped steel column. Lap plates are provided on the box-shaped steel column, located around the perimeter of the corbels. Inserts are placed on the corbels near the lap plates, with the centerline of the inserts perpendicular to the lap plates. The ends of the stiffened box girder are welded to the corbels. Transverse reinforcing bars are arranged around the circumference of the stiffened box girder, with their ends lapped onto the lap plates on the box-shaped steel column. Each vertical reinforcing bar is arranged around the circumference of the box-shaped steel column, with its end inserted into a corresponding insert. The stiffened box girder-column connection structure provided by this application, where the ends of the transverse reinforcing bars lap onto the lap plates and the vertical reinforcing bars are inserted into inserts, eliminates the need for holes to penetrate the box-shaped column and box girder, does not weaken the cross-sectional area of ​​the steel structure, ensures the integrity and stability of the steel structure, and allows the steel structure to fully utilize its load-bearing capacity.

The invention provides a real-time detection method and system for the positioning precision and reliability of an open-sea GNSS, and the method comprises the steps: setting N GNSS receivers on open-sea equipment, N > = 3, enabling the phase centers to be distributed at N vertexes of a TIN triangulation network, and calibrating the relative position parameters between the phase centers of the N GNSS receivers; synchronous observation and data acquisition: N GNSS receivers synchronously receive and acquire satellite observation signals and / or high sea base station differential correction signals to form observation data; real-time resolving: on the basis of a GNSS RTK carrier phase difference resolving engine and an LAMBDA integer ambiguity fast fixing algorithm, according to observation data of the N GNSS receivers, real-time resolving is carried out to obtain actual relative position parameters among phase centers of the N receivers; precision verification and comparison: setting a positioning error threshold value; and resolving a deviation value between the actual relative position parameter and the calibrated relative position parameter among the phase centers of the N receivers in real time, and comparing the deviation value with a positioning error threshold value to determine whether the positioning accuracy is qualified or not.