1673 results about "Anchor bolt" patented technology

The invention relates to a diagnosis method for judging a loose part of rotating equipment. The diagnosis method comprises the following steps: (1) collecting vibration data; (2) spectrum characteristic analysis; (3) differential vibration testing; (4) positioning a loose part; and (5) dynamic verification and optimization. The device has the advantages that through multi-dimensional vibration data acquisition, vibration sensors are arranged at key parts such as motor feet, a bedplate and foundation bolts, vibration displacement values in the horizontal direction, the vertical direction and the axial direction are measured, multiple test points are divided to synchronously acquire data, and vibration information of rotating equipment can be comprehensively acquired. And combining frequency spectrum characteristic analysis and differential vibration comparison, comparing vibration displacement value differences of different hierarchical structures of the same part, and calculating a difference threshold value, so that the specific loose part of the A-type machine is accurately positioned, the limitation that accurate positioning is difficult to realize by traditional experience-dependent judgment or single vibration amplitude analysis is broken through, the blindness of maintenance is reduced, and the working efficiency is improved. The maintenance efficiency is improved.

The invention relates to the technical field of wind power, and discloses a lattice type foundation for a wind power tower and a construction method thereof.The foundation comprises a plurality of bearing platforms, and a cross beam is fixedly connected between every two adjacent bearing platforms; a lattice type wind power tower column can be erected on the upper side of the bearing platform; an embedded pipe is reserved in the center of any bearing platform and used for penetration of a prestressed steel strand, and the prestressed steel strand can be fixed to the top face of the tensioning cavity; a tensioning cavity is formed in the bottom surface of any bearing platform and can be used as a prestressed steel strand tensioning or anchoring operation space; any bearing platform is provided with a pre-stressed anchor bolt assembly, and the pre-stressed anchor bolt assembly is suitable for being fixed to a lattice type wind power tower column. The multiple bearing platforms are adopted for providing support for fixing of the lattice type wind power tower, compared with a fan foundation of a traditional cylinder type tower, the land acquisition area can be remarkably saved, the material cost is reduced, and the wind power tower foundation is suitable for various terrain environments.

An anchor rod mounting trolley belongs to the technical field of tunnel construction and comprises a movable chassis, a grouting system and an operation system. The operating system comprises a working arm, a hanging basket device and a propelling device; the grouting system and the working arm are both installed on the movable chassis, the hanging basket device is installed on the working arm, and the propelling device is installed on the hanging basket device. The grouting system is used for injecting grout into an anchor rod hole; the working arm is used for adjusting the positions of the hanging basket device and the propelling device relative to the anchor rod hole; and the propelling device is used for inserting the anchor rod body into the grouted anchor rod hole. The mechanical degree can be improved, the labor intensity is reduced, the operation efficiency is improved, and the construction cost is reduced.

The invention relates to the technical field of mining engineering and geotechnical engineering support design, and discloses a roadway anchor rod group support parameter intelligent optimization method based on unbalanced force, and the method comprises the steps: building a surrounding rock finite element model, calculating a plastic stress increment through employing a minimum plastic complementary energy principle, and mapping the plastic stress increment into a node unbalanced force vector; an unbalanced force field reflecting reinforcement requirements is constructed, and an initial scheme is generated according to the unbalanced force field. Then, a virtual anchor rod unit is introduced to establish a nonlinear coupling model, an incremental balance equation is solved, and whether the unbalanced force is smaller than a threshold value or not is judged; if so, outputting an optimal parameter; otherwise, a comprehensive objective function containing safety and economy is constructed, new parameters are obtained through searching and decoding by means of the particle swarm algorithm, and the virtual anchor rod unit is re-entered for calculation to form a closed loop until convergence is achieved. According to the method, intelligent optimization is driven through a physical mechanism, the problem that a traditional design lacks a mechanical basis is solved, and accurate optimization of support parameters is achieved.

The invention belongs to the technical field of mining construction, and particularly relates to an artificial roof structure and a construction process thereof. The construction process comprises the steps that S1, anchor rod holes are constructed in the positions, 1 m away from a bottom plate, of two sides of a stope, S2, ore cushion layers with the thickness of 200 mm are laid and leveled, S3, I-shaped steel bottom beams are erected and fixed through round steel anchoring parts and welding base plates, S4, a reinforcing mesh is laid, main ribs and auxiliary ribs are bound in a crossed mode and welded to anchor rods, according to the composite structure design of the double-layer reinforcing mesh, the steel wire mesh and the hanging bar system, a three-dimensional stress system is formed, the bending resistance and the shearing resistance of the false roof are remarkably improved, the problem that a traditional false roof is prone to cracking and sinking is solved, and the false roof has the advantages of being simple in structure, convenient to use, economical and practical. Due to the layered matching design of the full-tailing cemented filling body, the bearing strength is guaranteed, seamless roof contact is achieved, the risk of roof hollowing is reduced, the pressure of stope operation circulation is relieved, the ore removal efficiency is improved, and the mining cost is reduced.

The invention provides a seamless steel pipe for a hollow anchor rod and a strength regulation and control method thereof. Alloy steel round steel is heated and then subjected to hot piercing to be manufactured into a hollow pipe blank; the hollow pipe blank is subjected to spheroidizing annealing treatment and then cooled, and a first treated steel pipe is obtained; wherein the ferrite grain size D1 of the first treated steel pipe is calculated according to a spheroidizing annealing grain size model; the first treated steel pipe is subjected to cold finish rolling forming and cleaned to obtain a second treated steel pipe; the ferrite effective grain size Ddef of the second treatment steel pipe is calculated according to the cold deformation grain refinement model; recrystallizing and annealing the second treated steel pipe to obtain the seamless steel pipe; the ferrite grain size D2 of the seamless steel pipe is calculated according to the recrystallization grain evolution model; the yield strength Rp0.2 of the seamless steel pipe is calculated according to a strength model; reverse design of the yield strength of the seamless steel pipe is achieved, and meanwhile it is guaranteed that the seamless steel pipe has good plasticity.

The invention discloses a voiceprint detection method and device for bolt looseness of a power transmission tower, and relates to the technical field of bolt looseness detection, and the method comprises the following steps: obtaining a noise reduction signal of a bolt, extracting feature data from the noise reduction signal, and constructing a multi-dimensional voiceprint feature vector; performing weighting processing on the multi-dimensional voiceprint feature vector to obtain a working condition adaptive feature vector; calculating a weighted difference degree between the working condition adaptive feature vector and a reference feature vector, wherein the reference feature vector is obtained through a bolt vibration voiceprint signal feature in a normal fastening state; and the weighted difference degree is judged based on the dynamic threshold value, and the bolt loosening state is output. The method is used for solving the problems of poor adaptability and easy missing detection caused by working condition difference of foundation anchor bar bolts.

The invention discloses a quick connecting structure and method for a single-layer modular cold-formed steel building and a foundation, which mainly comprises a shoot nail-connecting piece mounting system and a guide rail positioning system, and aims to realize efficient and stable quick connection between the single-layer modular cold-formed steel building and the foundation. Wherein the guide rail positioning system comprises channel steel, foundation bolts, flat-end bearing wheels, stiffening ribs and steel plates, the channel steel, the stiffening ribs and the steel plates are fixed to a foundation through the foundation bolts after being welded and fixed, the flat-end bearing wheels are fixed to the channel steel, and a building body can slide to a preset position through the guide rail positioning system. The shoot nail-connecting piece installation system is composed of an embedded steel plate, an anchoring rib, an angle steel connecting piece, a stiffening rib, a shoot nail and a bottom beam, the embedded steel plate and the anchoring rib are welded and then buried in the foundation, one side of the angle steel connecting piece is attached to the bottom beam, the other side of the angle steel connecting piece is attached to the embedded steel plate and connected with the embedded steel plate through the shoot nail, and then connection of the building body and the foundation is completed.

The utility model discloses an inclined column template support frame for cast-in-place of a concrete beam, which is characterized in that a vertical steel pipe upright post and an inclined steel pipe upright post are fixedly arranged on a bearing platform by utilizing bearing platform anchor bolts, and the vertical steel pipe upright post and the inclined steel pipe upright post are pulled into a whole by a horizontal pull rod along the direction of a bridge; the inclined steel pipe stand columns at the corresponding positions in the single span are connected into a whole through corner connectors and horizontal cross rods. The unloading blocks are arranged on the top faces of the vertical steel pipe stand columns and the top faces of the corner connectors respectively. A bearing beam is placed on the top face of the unloading block in the transverse bridge direction, a bailey beam is arranged on the top face of the bearing beam in the bridge direction, a distribution beam is placed on the top face of the bailey beam in the transverse bridge direction, and the batter post formwork supporting frame for concrete beam cast-in-place is formed. The bearing platform is fully used as a supporting point, the inclined steel pipe stand columns are arranged to share the upper load, a strip-shaped foundation does not need to be additionally arranged, construction cost is saved, the spanning capacity of the support is greatly improved, and the support is a preferable scheme for spanning rivers, roads and bridge sites in a large-span mode when the geological environment is poor.

The invention relates to the technical field of assembly type column base nodes, in particular to a high-bearing-capacity assembly type steel structure column base node which comprises an upper bottom plate, a lower bottom plate and a buckling-restrained energy consumption plate, an upper energy consumption plate is fixed to the bottom of the upper bottom plate, and a lower energy consumption plate is fixed to the top of the lower bottom plate. Buckling-restrained energy dissipation plates which are spaced left and right are fixed between the upper energy dissipation plate and the lower energy dissipation plate, and the upper bottom plate, the upper energy dissipation plate, the lower energy dissipation plate and the lower bottom plate are fixedly installed together through at least four extension anchor bolts with the lower ends pre-embedded in a foundation. The structure is reasonable and compact, and the rigidity and the bearing capacity of the joint are regulated and controlled by changing the thickness of the middle buckling-restrained energy consumption plates and the thickness of the inner energy consumption plates, so that the high bearing capacity performance target is achieved. Under the action of an ultra-large earthquake, the extension anchor bolt on the outermost side yields firstly, then yields the buckling-restrained energy dissipation plate, and finally yields the internal energy dissipation plate, so that a multi-stage energy dissipation system in a plastic stage is formed, and the anti-seismic property of the structure is effectively improved.

The invention discloses a guide wall for airplane ground test run, which comprises a U-shaped barrier part enclosing an airplane, the barrier part comprises a side guide wall corresponding to the side of the airplane and a rear guide wall corresponding to the tail of the airplane, the side guide wall comprises a windward side and a leeward side, and the leeward side is connected with a fixing frame. The fixing frame is connected with a ground anchor bolt to support the side flow guide wall, and the rear flow guide wall is fixedly connected with ground concrete; the length of the side flow guide wall exceeds the position of the nose during the test run of the airplane, and an air inlet channel is arranged at the side flow guide wall corresponding to the side wing during the test run of the airplane, penetrates through the side flow guide wall and supplements airflow to the engine close to the side wing of the air inlet channel; by arranging the air inlet channel, air flow is introduced from the side face of the aircraft directly facing the engines, the problem that the test is affected by insufficient air suction of the double engines due to the fact that the side face flow guide wall is far longer than the fuselage is solved, the internal and external pressure difference of the flow guide wall is reduced, and test run of the aircraft is facilitated.

The invention relates to the technical field of tunnel hidden engineering detection, in particular to a digital detection method and system for the number of tunnel anchor rods, and the method comprises the following steps: carrying out the image collection of a tunnel arch part along the center line of a tunnel through image collection equipment, so as to obtain a panoramic image of the tunnel anchor rods; performing image preprocessing by using a block adaptive image enhancement algorithm to obtain an anchor rod region detail enhancement image; carrying out anchor rod labeling on the anchor rod area detail enhancement image to obtain an original data set so as to construct a model data set; constructing an improved target detection model for a tunnel environment, and training and optimizing the improved target detection model in combination with the model data set to obtain an anchor rod number detection model; and performing real-time identification and statistics on the tunnel anchor rods based on the anchor rod number detection model to realize digital detection of the number of the tunnel anchor rods. According to the method, the anchor rod detection efficiency and precision are remarkably improved, and a complete digital solution is provided for tunnel anchor rod number detection.

The invention discloses a coal mine large steel structure derrick installation method. The method comprises the steps that a derrick foundation and a derrick body are modeled; the foundation bolt sleeve assembly and the derrick main body are machined in a plant; carrying out lofting excavation according to a derrick foundation; main leg units are assembled on site; slowly and stably hoisting the auxiliary leg unit by using a crane; a crane is used for cooperating operation, and bulk units are hoisted part by part; and hoisting the upper unit to the lower opening of the main inclined frame by using a crane, and integrally hoisting the upper unit to complete the derrick installation construction. The derrick installation construction process is dynamically simulated through overall modeling, and the operability of the hoisting scheme is guaranteed; the derrick hoisting construction safety is ensured by combining finite element stress analysis and steel structure and lifting lug strength checking; according to the foundation bolt sleeve combination, the upper and lower child-mother cones are accurately spatially positioned, the position and elevation of the rooting hinge are accurately controlled, and the angle accuracy of the foundation bolt of the derrick is ensured.

The construction method comprises the following steps that a horizontal anchor rod, a bottom plate vertical anchor rod, a stand vertical anchor rod and a new anchor bolt assembly are constructed on an original fan foundation bottom plate and an original fan foundation stand correspondingly; new pile foundations are constructed at the bottom of the new foundation bottom plate; newly-added foundation slabs are constructed on the periphery and the top of the original fan foundation slab, and newly-added foundation pillars are constructed on the periphery and the top of the original fan foundation pillars; and the original wind turbine foundation bottom plate, the original wind turbine foundation stand, the newly-added foundation bottom plate and the newly-added foundation stand are reinforced through the horizontal anchor rods, the bottom plate vertical anchor rods, the stand vertical anchor rods and the new anchor bolt assemblies, and construction is completed. The method has the beneficial effects that the workload of breaking and removing an original fan foundation is avoided, the original fan foundation is utilized to the maximum extent, energy conservation and environmental protection are better achieved, the use amount and transportation difficulty of fan foundation concrete are reduced, the construction period is shortened, and the construction cost is saved.

The invention relates to the technical field of anchor joint tension-shear bearing capacity calculation methods, in particular to an anchor joint after opposite-penetrating bolt combination and a tension-shear bearing capacity calculation method.The anchor joint comprises a joint plate and anchor bolts, the joint plate is used for connecting a horizontal steel member and a concrete beam, the anchor bolts comprise the opposite-penetrating bolts and chemical anchor bolts, and the opposite-penetrating bolts and the chemical anchor bolts are arranged on the joint plate. The horizontal steel member is connected with the gusset plate, the through bolt and the chemical anchor bolt penetrate through the gusset plate and are connected with the concrete beam, the through bolt penetrates through the concrete beam, and the chemical anchor bolt does not penetrate through the concrete beam. Through the combined application of the high-strength through bolts and the chemical anchor bolts, the shear capacity of the joint is greatly improved, and meanwhile, the combined force transfer system also improves the synergistic effect capacity of the anchor bolts and the safety redundancy of the joint; and the base material concrete is prevented from being split and damaged.

The invention relates to the technical field of simulation calculation, in particular to a simulation calculation method of a U-shaped steel-encased-concrete composite beam, which comprises the following steps: S1, establishing a two-parameter interface equivalent stiffness model of the U-shaped steel-encased-concrete composite beam with a rear anchor bolt; s2, solution and response extraction; s3, calculating a slip residual error and interface energy, and judging whether a target slip feature is met or not according to a double-convergence criterion; if the convergence requirement is not met, adaptively updating the interface parameters and returning to S2 for repeated solution, and if the convergence criterion is met, applying the converged interface rigidity parameters to design feedback of pretightening force selection of the rear anchor bolts and anchor bolt spacing and node construction of the rear anchor bolts. According to the method, the two-parameter interface equivalent stiffness model and the adaptive algorithm based on the slip residual error enable the interface normal stiffness and the interface tangential stiffness to be automatically converged to the target slip characteristic, manual parameter adjustment is avoided, the simulation stability and the calculation precision are improved, and integration of composite beam structure design and simulation analysis is achieved.

Flexible hole forming equipment suitable for a rocket tube section end frame comprises an axial hole forming device, a radial hole forming device, a rotary table, a flexible tool and a control system. Wherein the rotary table is fixed on a foundation through an adjusting sizing block and a foundation bolt; the flexible tool is mounted on the rotary table through a positioning pin and a screw; the axial hole forming device and the radial hole forming device are installed on the two sides of the rotary table at the interval of 90-degree azimuth angles. The device is mainly used for machining axial butt joint holes and radial riveting holes of multi-model cylinder section end frames of spaceflight carrier rockets and axial milling, flexible hole forming of the rocket cylinder section end frames with the diameter of phi 3350 mm and phi 3800 mm can be met, and machining of all inner L-shaped and outer L-shaped end frames with the diameter of phi 3350 mm and phi 3800 mm is considered; the problem that a multi-drill jig tool corresponding to multi-type end frames is tedious to replace is solved, the size precision and the position precision of end frame drilling are greatly improved, and the machining period is shortened.

A section steel column base connection construction joint comprises a prefabricated foundation structure and a post-pouring fixing structure, and the prefabricated foundation structure comprises a concrete foundation, foundation bolts, positioning plates, positioning nuts and column bases; the post-pouring fixing structure comprises a connecting column, a bottom plate fixedly connected with the connecting column, a fastening nut used for fixing the bottom plate to the positioning plate, a steel column, a connecting bolt used for fixing the column foot, the steel column and the connecting column, and secondary concrete poured on the concrete foundation. The lower portions of the foundation bolts are embedded in the concrete foundation, the upper portions of the foundation bolts extend out of the concrete foundation and are provided with positioning plates in a limited mode through positioning nuts, the bottom plate and the positioning plates are fixed through fastening nuts after being overlapped, the lower portions of the column feet are embedded in the concrete foundation, the upper portions of the column feet are connected with steel columns in an inserted mode, and the side walls of the peripheries of the steel columns are inserted into the spaces between the column feet and the connecting columns. The technical problem that in the prior art, a steel column is directly connected with a foundation bolt, and the foundation bolt is prone to bending and not easy to align is solved.

The utility model discloses a steel-concrete combined bridge deck precast slab hoisting device without damage to a structure, which comprises a connecting sleeve and a main anchor bar component which are prefabricated in a bridge deck slab, the connecting sleeve and the main anchor bar component are used for dismounting and fixing a movable lifting lug component through a connecting anchor bolt, and a round hoisting hole for hoisting is formed in the lifting lug component. A reinforcing assembly for structural reinforcement is further arranged in the lifting lug assembly. According to the utility model, the problems that the concrete at the root part of the lifting lug is broken during the lifting period and the concrete protection layer cannot be recovered after the lifting lug is cut after the lifting is completed due to the temporary lifting point made of the traditional HPB300 round steel are solved; the movable lifting lug and the anchor bolt can be repeatedly used, and are economical and environment-friendly; the anchor bar assembly is machined in a factory mode, positioning is accurate, and construction is convenient. The device disclosed by the utility model has a relatively wide application prospect in hoisting construction of engineering structure concrete members such as precast slabs, precast beams, precast columns, precast piles and the like.

To provide a method for attaching a nested washer that is applicable to a base plate having an enlarged anchor bolt insertion hole, and the nested washer. [Solution] Indicator points 22, 34 are provided on the upper surfaces of the seats at positions where the wall thickness of the cylindrical legs 23, 32 of the upper washer 20 and the lower washer 30 is smallest, and a graph is prepared showing the relationship between the eccentricity distance and the rotation angle for each size of nested washer. An eccentricity reference line BL is set by extending the line connecting the center D of the enlarged hole 4 and the axis C of the anchor bolt 3 in the eccentric direction, and the rotation angles θ1, θ2 of each washer are confirmed on the graph according to the eccentricity distance E of the anchor bolt 3 measured on site. With the cylindrical leg 32 of the lower washer 30 fitted into the enlarged hole 4, the indicator point 34 of the lower washer 30 is aligned with the eccentricity reference line BL, and the bottom washer 30 is positioned by rotating it by the rotation angle θ1. The upper washer 20 is then inserted onto the anchor bolt and rotated by the opposite amount θ2 on the upper surface of the lower washer, whereby the cylindrical leg 23 of the upper washer 20 fits into the leg receiving hole of the bottom washer.

The utility model relates to a positioning device for a bolt in an anchor bolt hole of a railway engineering support padstone, which belongs to the technical field of support padstones and comprises a fixed seat, an adjusting rod, an embedded body and a locking piece, the number of the adjusting rods, the number of the embedded bodies and the number of the locking pieces are the same. One end of the adjusting rod is in threaded connection with the vertical side wall of the fixed seat, the other end of the adjusting rod is arranged in an overhanging mode in the direction away from the fixed seat, the embedded body is arranged on the adjusting rod in a sliding mode and slides in a reciprocating mode in the length direction of the adjusting rod, the embedded body is vertically arranged, and the locking piece is used for locking the position of the embedded body relative to the adjusting rod; and the adjacent adjusting rods are located on different vertical side walls of the fixed seat. The device has the effect of ensuring that the positions of the adjacent anchor bolt holes in the same cushion stone are accurate.

The utility model relates to the technical field of anchor bolts, and particularly discloses a plastic anchor bolt special for maintenance of an outer wall thermal insulation layer, the plastic anchor bolt comprises a metal screw and a plastic expansion sleeve, and a plastic disc is arranged at the top of the plastic expansion sleeve; a cavity for accommodating the metal screw is formed in the plastic expansion sleeve; the upper portion of the plastic expansion sleeve is a sleeve, the lower portion of the plastic expansion sleeve is an anchoring end, a glue injection hole communicated with the cavity is formed in the sleeve, and a glue injection sealing film is arranged between the glue injection hole and the anchoring end. Due to the expansion gap formed in the middle of the anchoring end and the protrusions and the recesses in the outer wall, after the anchor bolt is installed, the anchor bolt can be better meshed with a base material, the anchoring strength is improved, and the anti-drawing performance of the anchor bolt is improved. The glue injection sealing film is arranged between the glue injection hole and the anchoring end, so that glue liquid can be prevented from leaking to other places during glue injection, and the glue injection pressure and the glue liquid are ensured to reach required places only through the glue injection hole; and after glue injection, the reinforcing effect of the anchor bolts on the thermal insulation layer is further enhanced.

The invention discloses a spoke type adjustable foundation bolt fixing device, which is characterized by comprising a circular connecting disc, a plurality of connecting rods, a plurality of connecting rods, a plurality of connecting rods and a plurality of connecting rods, an annular base disc is concentrically arranged on the same plane of the periphery of the circular connecting disc; a plurality of bolt group flange plates are uniformly arranged on the periphery of the annular base plate; the outer peripheral side of the circular connecting disc is fixedly connected with the inner peripheral side of the annular base disc through uniformly arranged connecting strips; a screw rod is rotationally connected to the center point of the top surface of the circular connecting disc, and a rotating disc is fixedly connected to the screw rod; a movable ring is in threaded connection with the screw rod, a plurality of adjusting assemblies are uniformly arranged on the peripheral side of the movable ring, and the adjusting assemblies correspond to the bolt group flange plates one to one; one end of the adjusting assembly is rotatably connected with the peripheral side of the moving ring, and the other end is connected with the annular base disc and the top of the bolt group flange. The overall firmness, stability and installation precision of the foundation bolt can be improved through cooperation of the adjusting assemblies and the bolt set flange plates which are in one-to-one correspondence.

A special fixture for horizontal milling of rack anchor bolt hole belongs to the technical field of metal cutting processing fixture, solves the problems of insufficient positioning accuracy, difficulty in meeting high-precision processing requirements, complex fixture adjustment process, cumbersome operation, low processing efficiency and poor adaptability of existing processing fixtures. Including the fixture base, the upper side of the middle part of the vertical plate on the fixture base is provided with two groups of tool setting grooves, the front side of the vertical plate is provided with a workpiece positioning pin, the lower side of the anchor workpiece transmission hole of the anchor workpiece is provided with an adjustable supporting nail; The left and right sides of the vertical plate and the anchor workpiece base are movably provided with a workpiece pressing plate, the driving end of the workpiece pressing plate is connected with the cylinder extension part of the clamping cylinder on the two sides; The tool setting block on the upper end of the tool setting base on the rear side of the vertical plate is provided with a tool setting plug gauge. Its design is reasonable, the structure is compact, the positioning accuracy and stability of the fixture can be improved, the adjustment operation is simplified, the processing efficiency is improved, and the processing requirements of different specifications of transmission shaft supports can be met.

The utility model provides a transportation device for a foundation embedded part of a steel chimney, which is applied to the technical field of self-standing steel chimneys, and is characterized by comprising a frame body and a fixing frame, a template is fixed on the fixing frame, and the fixing frame is fixed on the frame body; the at least two stacking frames are fixed to the frame body side by side, and each stacking frame comprises two pieces of first channel steel vertically fixed to the frame body and a plurality of pressing plates with the two ends inserted into the two pieces of first channel steel correspondingly; the foundation bolts are stacked between every two adjacent pressing plates. The fixing frame is arranged on the stacking frame in a pressing mode and provides downward pressure so that the foundation bolts can be fixed to the stacking frame. The steel chimney foundation embedded part has the technical effects that the foundation embedded part can be fixed into a whole, a template and a foundation bolt of the steel chimney foundation embedded part are protected from being damaged, and the transportation cost of the steel chimney foundation embedded part is also reduced.

The application discloses a soil-rock dam reinforcing and enhancing structure for preventing over-standard overflow dam break and a construction method thereof. The structure comprises a soil-rock dam filling body, a vertical anti-seepage core wall arranged in the soil-rock dam filling body, and a composite high-strength fiber three-dimensional membrane arranged on the surface of the dam slope after regulation. The membrane body is unfolded along the slope surface and is reinforced by a pressing plate type fixing anchor bolt and a fiber membrane three-dimensional rivet. The row-to-row spacing of the fixing anchor bolt is 20-50 cm, so that the composite membrane is tightly attached to the dam body. The rigid structure and the flexible protection material are organically combined, the dam body's erosion resistance and durability are significantly improved while the flood discharge capacity is ensured, the construction method is simple, the cost is low, and the method is suitable for flood control reinforcement and safe operation of various soil-rock dams.

This utility model provides a reinforced concrete foundation and photovoltaic support suitable for mountain foundations. The foundation includes a rock anchor bolt foundation and an above-ground reinforced concrete foundation. The rock anchor bolt foundation includes rock mass with drilled holes, anchor bolts anchored into the drilled holes, and anchor bolt fixing reinforcement connected to the upper end of the anchor bolts. The anchor bolt fixing reinforcement is embedded in the above-ground reinforced concrete foundation. The above-ground reinforced concrete foundation includes a foundation platform and short reinforced concrete columns extending vertically upwards from the centroid of the foundation platform. The bottom of the photovoltaic support column is embedded in the short reinforced concrete column. The rock anchor bolt foundation and the above-ground reinforced concrete foundation are formed as a single structure through the reinforced concrete structure, which can effectively fix the above-ground reinforced concrete foundation. This avoids the risk of the power station overturning due to excessive pull-out force on one side of the foundation caused by excessive eccentricity between the column and the foundation centroid due to terrain limitations or construction deviations.

The shear key steel structure comprises a steel column, a column foot base frame, foundation bolts, shear keys, a sleeve and a column foot base, the column foot base frame is installed in the column foot base through the foundation bolts, the steel column is installed on the column foot base frame, the multiple shear keys are arranged at the bottom of the column foot base frame, and the sleeve is installed on the column foot base frame. And the shear key is inserted into the column foot foundation and is sleeved with a sleeve. The beam-column joint reinforcement cage has the beneficial effects that the steel bars serving as shear keys and the sleeves serving as the pre-buried grooves can be subjected to proper position selection according to the distribution of the steel bars at the mounting positions of the column feet, so that the cost is not increased, and the strength of the beam-column joint reinforcement cage is not reduced; the problem that in the prior art, shear keys are prone to conflicting with dense steel bar nodes is solved, the structure is simple, operation is easy, and reliability is good.

The invention belongs to the technical field of building curtain wall construction, and particularly relates to a visual seamless structure of a complex curved surface aluminum plate curtain wall and a construction method of the visual seamless structure, and the visual seamless structure comprises a supporting system, a panel system and a seamless processing system; the supporting system comprises a fixing piece anchored to a civil engineering structure through a chemical anchor bolt, a transverse transfer arm connected with the fixing piece, a main keel vertically arranged through the transfer arm, an auxiliary keel transversely arranged on the main keel and a telescopic adjusting assembly. The panel system comprises an aluminum veneer and a self-tapping connecting piece; the aluminum veneer is fixedly connected to the auxiliary keel, the telescopic adjusting assembly is arranged between the auxiliary keel and the aluminum veneer, and the seamless processing system is located at the junction of the aluminum veneer and the plaster layer. According to the method, the problems of poor mounting precision and obvious visual seams of the complicated curved surface curtain wall are solved, and high-precision and high-efficiency construction is realized.

The utility model relates to a steel structure fixing structure on a concrete waterproof coiled material, which is characterized in that a steel plate is arranged above a waterproof coiled material layer, an anchor bolt penetrates through a vertical first anchoring hole corresponding to the waterproof coiled material layer and a concrete structural plate, and a waterproof coating layer is arranged between the anchor bolt and the first anchoring hole of the waterproof coiled material layer; the anchor bolt, the waterproof roll layer and the waterproof coating layer jointly form a waterproof closed loop layer, so that water leakage is basically avoided; the bottom face of the steel stand column is welded to the upper portion of the steel plate, the steel plate is fixed to the concrete structural plate of the top plate through the anchor bolts and the nuts, then the basement top plate can be used for supporting the stand column, the stress area is large, and the stress effect is better; the protective layer is arranged to cover the waterproof roll layer, the steel plate, the upper ends of the anchor bolts and the nuts, so that the ground is not interfered; due to the fact that the steel plate anchor bolts and the nuts are constructed along with the basement top plate, independent foundations do not need to be additionally arranged, construction procedures are fewer, and the period is shorter.