52results about How to "Avoid reinforcement" patented technology

The invention belongs to the technical field of seepage prevention and stabilization of heavy metal tailings ponds, and particularly relates to a composite stable layer structure at the bottom of a heavy metal tailings pond and a construction method thereof. The composite stable layer structure sequentially comprises a self-cementing layer, a percolate guide and discharge layer and an inverted filter protection layer from bottom to top. The self-cementing layer is mainly prepared from the materials of a self-cementing material, superfine tailing sand, flexible fibers and the like. The percolate guide and discharge layer takes coarse particle ore sand formed by natural or mechanical separation and deposition as a matrix, water collecting blind ditches are arranged at certain intervals in the direction perpendicular to the axis of a dam, and the blind ditches are divided into an upper layer and a lower layer and are correspondingly filled with medium-particle-size and large-particle-sizeriver sand; meanwhile, slotted hole seepage discharge pipes are buried in the lower layer, and the end parts of the slotted hole seepage discharge pipes penetrate out of a tailing dam body; and the inverted filter protection layer is coarse particle ore sand formed by natural or mechanical separation and deposition. The material and thickness of each layer structure are matched with each other, and the composite stable layer structure at the bottom of the heavy metal tailings pond has the advantages of being good in anti-seepage effect, high in strength and toughness, capable of solidifying/stabilizing heavy metal to a certain extent, good in anti-clogging and guiding and discharging effect, high in economical efficiency and the like.

The invention discloses a lifting construction method of a plurality of steel galleries between towers. The low-area steel galley, the middle-area steel galley and the high-area steel gallery are lifted in sequence; firstly, pre-installing rod pieces are installed in the elevation positions of the low-area steel galley, the middle-area steel galley and the high-area steel gallery, lifting platforms are arranged, and hydraulic lifters are installed simultaneously; then, the low-area steel galley is assembled on the ground and lifted to the elevation position, jig frames are erected on the low-area steel galley, and the middle-area steel galley is assembled and lifted to the elevation position; and jig frames are erected on the middle-area steel galley, the high-area steel gallery is assembled and lifted to the elevation position, and construction is completed. Construction of the multiple steel galleries between the towers is uncommon; the construction efficiency can be improved obviously through engineering practice of the construction method; construction safety is guaranteed; the hoisting workload is reduced by the maximum margin; energy consumption and time are saved; the construction cost and installing construction difficulty are reduced; the national environment-friendly construction requirement is met; reference and guidance can be provided for later similar engineering construction of the multiple steel galleries between the double towers; and application and popularization prospects are achieved.

The invention discloses a wide hollow slab oblique section shearing resistance reinforcing method. The method comprises the steps that original concrete paving, bituminous concrete paving and hinge joints on a hollow slab bridge are removed; a plurality of drilled holes are formed in edges of center sills and edge beans of the hollow slab bridge correspondingly; a plurality of stirrups are arranged on the center sills and the edge beams in a sleeved mode in the positions of the drilled holes correspondingly, and oblique bend bars are connected between the stirrups; oblique bend bars are connected in the positions, located at webs of the edge beams, between the stirrups sleeved with the edge beams correspondingly; steel bars are embedded in bottom plates of the center sills and the edge beams correspondingly according to a preset spacing; concrete is used for pouring the spaces and joints between the center sills, so that new hinge joints are formed; a ribbed steel mesh is arranged on the upper surfaces of the center sills and the edge beams, and then new concrete paving is formed through pouring; and concrete is poured at the bottoms of the center sills and the edge beams and websof the edge beams correspondingly, and reinforcing is completed. By means of the method provided by the invention, secondary erected stirrups and the oblique bend bars can be utilized for reinforcinga hollow slab on the premise that the cost is reduced, and a good reinforcing effect can be achieved.

The invention relates to the technical field of heat treatment, and provides a local heat treatment method for primary and secondary heating, regulating and controlling residual stress. The local heattreatment method comprises the steps that a primary heating belt is applied to a welding line, the welding line microstructure and hardness are regulated and controlled, so that the structure is uniform, and microcosmic residual stress is regulated and controlled; and a secondary heating belt is applied at the distance from the welding line, compression stress is generated on the inner surface ofthe welding line, and macroscopic compression stress is regulated and controlled. No rib plates are used for deformation, and the maximum deformation is transferred to a non-welding line area; by applying the secondary heating and strictly controlling primary and secondary heating time interval, the welding residual stress can be greatly regulated and controlled while the structure is improved; and the local heat treatment effect can reach the optimal, lesser tensile stress and even pressure stress is generated on the inner surface of the welding line, and the problem of leakage due to the fact that corrosion and cracking are generated at welding lines of large equipment is fundamentally solved.

The invention discloses a pile foundation static load compression resistance testing device, and relates to the technical field of building detection. The pile foundation static load compression resistance testing device comprises a main beam used for being arranged at the position above a to-be-tested pile foundation. A hydraulic cylinder is arranged at the lower end of the main beam. The main beam is further provided with two supporting assemblies used for supporting the main beam. The two supporting assemblies are located on the two sides of the to-be-tested pile foundation correspondingly.Each supporting assembly comprises a fixing part used for being inserted into the ground for fixation and a connecting part which is arranged above the corresponding fixing part and further connectedwith the main beam. Each fixing part comprises a round bar and a screw sheet which is spirally and fixedly connected to the outer side wall of the round bar in the axial direction of the round bar. Guiding parts are formed at the ends, far away from the connecting parts, of the fixing parts. Due to arrangement of the supporting assemblies, the fixing parts of the supporting assemblies and the ground are fixed to form large supporting force, the trouble of ground stabilization or filling replacement treatment is saved, and the pile foundation static load compression resistance testing device is made more convenient to use on the whole. In addition, the weight requirement for the main beam is greatly lowered, the number of heavy objects above is smaller, risks caused by heavy object hoisting are reduced and the overall testing safety is made better.

The invention relates to the field of industrial engineering, in particular to a mixed flow production line dynamic bottleneck prediction method. The method comprises: considering relative load rate,processing time utilization rate, utilization rate variability and output and buffer queue length indexes; regarding the indexes as a time sequence, performing modeling on historical data of the timesequence by using a VAR vector autoregression model algorithm, performing short-term prediction on relevant parameters at the t + 1 moment, extracting irrelevant evaluation indexes, realizing prediction on the dynamic bottleneck, and completing prediction on the bottleneck at the t + 1 moment by using the model. The bottleneck procedure obtained by the method is a dynamic bottleneck at a future moment, the bottleneck offset phenomenon possibly occurring in the production line can be predicted, the production line can be adjusted before bottleneck drift by utilizing the prediction result, and the influence on the production line is reduced.

The invention discloses a high-strength and convenient-to-pour construction pile. The high-strength and convenient-to-pour construction pile comprises a foundation and a pile body die shell. The bottom of the pile body die shell is fixedly connected with the top of the foundation, pile pouring openings are formed in the top of the pile body die shell, a plurality of ventilation holes are formed inthe side surface of the pile body die shell, two threaded holes are formed in the surfaces, located on the two sides of the ventilation holes, of the pile body die shell, a plurality of arc-shaped fixing plates are arranged on the surfaces of the ventilation holes, and cylindrical holes are formed in the four corners of the arc-shaped fixing plates. A steel bar cage inside the high-strength and convenient-to-pour construction pile adopts a honeycomb structure and has high strength. The funnel-shaped concrete pouring openings are more favorable for the concrete to enter the interior of the pile body die shell, pouring is facilitated, and the ventilation holes are formed in the side surfaces of the pile body die shell to increase the contact area between the concrete and the outside air, the solidification of the internal concrete is accelerated, the pile body die shell is spliced by the combination of clamping hooks and clamping slots, the use of bolts for reinforcement is avoided, andthe installation and disassembly of the two segmented die shells by workers are facilitated.

The invention discloses a high-precision fast perforating device. The high-precision fast perforating device comprises a drilling table and a drilling machine; the drilling table is fixed to a rack; the two ends of the drilling table are connected to a first supporting plate and a second supporting plate correspondingly; the other end of the first supporting plate and the other end of the second supporting plate are fixed to the rack through a fixing plate; a baffle is arranged on the first supporting plate; a guiding pipe is fixed to the bottom of the drilling table; the bottom end of the guiding pipe is communicated to a recycling groove; the drilling machine is fixed to the telescopic end of a hydraulic cylinder; the fixing plate is fixed to the drilling machine; an ejecting rod is movably connected to the fixing plate; and a clamping plate is fixed to the bottom end of the ejecting rod. According to the high-precision fast perforating device, the baffle is used for accurately positioning the perforating position, objects are automatically adjusted to the center position of the second supporting plate due to the self weight of the objects, and it is guaranteed that drilling is free of deflection; and the clamping plate is used for automatically fixing the objects on the two sides of the drilling machine, manual and repeated reinforcing on the objects is avoided, manpower issaved, and the drilling efficiency is improved.

The invention relates to the technical field of prefabricated building construction, in particular to a construction method for superimposing and connecting wallboards in a steel bar lap joint area. An overall cavity is reserved in the lap joint area of vertical steel bars, according to different types of components, a pouring hole is reserved at the top of the cavity, a tie part of an anti-expansion mold is embedded in the side wall of the cavity, and a positioning hole is reserved at the bottom of a component. The wallboard component is different from wallboards needing to be filled with high-strength grouting materials through sleeve grouting, grout anchor connection and the like that require vertical steel bars correspond in a one-to-one mode, and is also different from wallboards withlap connection at the bottom. The wallboard overcomes the problems of consuming a lot of installation time and secondary grouting during the sleeve connection installation process, and also overcomesthe problem of erecting reinforcement templates twice through a lap joint technology the safe and reliable connection is achieved, installation is accurate and fast, and the construction cost is reduced through the safe, fast and efficient connection technology.

The invention provides an all-steel fabricated double-limb steel pipe constrained anti-buckling steel plate shear wall, and belongs to the technical field of structural engineering. An embedded steelplate is welded in an edge frame through an upper splice bar, a lower splice bar, a left splice bar and a right splice bar, double-limb constraint steel pipes are arranged at equal intervals on the two faces of the embedded steel plate, and the embedded steel plate is clamped through connecting bolts. According to the all-steel fabricated double-limb steel pipe constrained anti-buckling steel plate shear wall, the shear bearing capacity and the hysteresis energy consumption capability of the steel plate shear wall are improved, the bearing capacity and rigidity of the shear wall can be conveniently adjusted by adjusting the number of the double-limb constraint steel pipes, and the structural design is facilitated; the constraint steel pipes are small in size, light in self weight and convenient to transport and hoist.

The invention provides a pier and beam integrated bridge girder erection machine and a hole passing construction method, and belongs to the technical field of bridge erection, the pier and beam integrated bridge girder erection machine comprises a longitudinal guide beam, a main beam, a crown block, four sets of support leg devices and a cross beam. The main beam is installed below the longitudinal guide beam, the cross beam is connected with the longitudinal guide beam, the crown block is installed on the cross beam, and the support leg devices are installed below the main beam. A carrier roller assembly and a hanging assembly are arranged on the support legs, the carrier roller assembly drives the main beam to move in the front-back direction, and the hanging assembly drives the support legs to move in the front-back direction. According to the machine, the pier columns and the split cover beams in the span are firstly installed, then hole passing operation is conducted to the next span to conduct pier column and cover beam hoisting operation, circulation is conducted, the pier columns and the split cover beams in the whole line are installed through one bridge girder erection machine, the problem that the wet connection waiting time of the split cover beams is long is solved, and the construction efficiency is high. Hoisting operation of pier columns, bent caps and box girders can be completed in an operation area with poor foundation bearing capacity, the foundation does not need to be reinforced, construction cost is low, and safety risks are low.

The invention discloses a boiler decoking agent and belongs to the field of decoking agents. According to the boiler decoking agent, zinc powder and flake graphite are used as raw materials, and concentrated nitric acid is used for carrying out intercalation on the flake graphite and expanding to prepare expanded graphene; ball-milled zinc powder is ultrafine powder and is used as a zinc source; ethanol is used as a dispersant to prepare a composite material with a good structure; in a preparation process, starch is used and pores of starch colloid can be filled with the composite material andis used as a crosslinking agent, and a molecular chain of the starch is crossly linked, so that the surface of the starch with a porous structure is more dense; effective components deposited in thestarch are prevented from losing in preparation and storage processes. By adopting the boiler decoking agent, the problem of a current boiler decoking agent that the efficiency of removing coked fouling of a boiler wall is low is solved.

The invention discloses a reinforcing construction method for a trough plate platform of an operation subway station and belongs to the technical field of reinforcing construction of operation subwaystation structures. The reinforcing construction method comprises the following steps of S1, construction applying and blockage of a track line, S2, construction preparation, S3, hole forming, S4, mounting of steel bars, S5, mounting of steel formworks, S6, stirring of cement foundation grouting materials, S7, pouring of the cement foundation grouting materials and pressurizing of a high funnel, S8, platform surface recovering and S9, applying of construction completion and removing of line blockage. According to the reinforcing construction method for the trough plate platform of the operation subway station, the two holes with the diameter being 90 mm are formed in a trough plate and serve as the pouring hole and the pressurizing hole correspondingly, and not only can the integrity of the overall structure of the trough plate platform and the safety of the operation station be guaranteed, but also the reinforcing construction requirements can be met; the assembled steel formworks areutilized as a part of the reinforcing structure, and convenience and rapidness are achieved; and the reinforcing construction method has the advantages that safety is high, operation is convenient, applicability is high, and manual operation strength is reduced.

The invention belongs to structures and construction of highway bridge expansion and contraction devices and particularly relates to a connecting mechanism of an expansion and contraction device. Theconnecting mechanism comprises embedded parts which are embedded in a concrete structure at the bottom of a preformed groove in a beam end or a bridge head at intervals and are assembled with anchoring ribs of the expansion and contraction device through overlap joint ribs. The embedded parts are integrally embedded in the concrete structure at the bottom of the preformed groove, the tops of the embedded parts are not higher than the bottom surface of an inner cavity of the preformed groove, assembling parts capable of forming fixed assembling with the anchoring ribs are included in the tops of the embedded parts and/or connecting plates capable of forming fixed assembling with the anchoring ribs are fixed to the tops of the embedded parts, and horizontal steel bars are connected in the overlap joint parts of the overlap joint ribs and the anchoring ribs of the expansion and contraction device in a penetrating mode. The connecting mechanism of the expansion and contraction device effectively solves the problems that in the prior art, an expansion and contraction device is long in construction period, high in construction difficulty and the like, and has the advantages of being lowin construction difficulty and intensity, high in construction speed, capable of facilitating standardized production and the like.

The invention belongs to the structure and construction of a highway bridge telescopic device and particularly relates to a beam end or bridge head concrete structure of a telescopic seam dedicated embedded part and application thereof. The beam end or bridge head concrete structure of the telescopic seam dedicated embedded part comprises a beam end or a bridge head and embedded parts, wherein theembedded parts are embedded in a reserved groove bottom concrete structure formed in the beam end or bridge head at intervals and are matched with anchoring ribs of a telescopic device; the embeddedparts are integrally embedded in the reserved groove bottom concrete structure; the embedded part top is no higher than the bottom surface of the cavity of a reserved groove and comprises an assembling part and/or a connecting plate; the assembling part can form fixed assembling with the anchoring ribs; and the connecting plate can form fixed assembling with the anchoring ribs. The beam end or bridge head concrete structure effectively solves the problems in the prior art that a telescopic device is long in construction period and is high in construction difficulty and has the advantages of being low in construction difficulty and strength and high in construction speed, facilitating standardized production and the like.

The invention discloses a shield receiving end reinforcing structure, a reinforcing method and a shield receiving method, and belongs to the technical field of shield construction. The shield receiving end reinforcing structure is arranged in a soil body behind an enclosure structure, one surface of the reinforcing structure is connected with the enclosure structure, and the reinforcing structureis a steel component which is vertically driven into the soil body. The reinforcing structure plays a role in reinforcing the soil body, large-volume soil body reinforcement is avoided, consumables and manpower are saved, the workload of construction workers is reduced, and energy consumption and construction cost are reduced. The pull-out component can be repeatedly used, so that the constructioncost is further reduced. According to the shield receiving end reinforcing structure, the reinforcing method and the shield receiving method, the end soil body has no need being integrally reinforced, so that the construction energy consumption is reduced, and the construction cost is saved; and during shield receiving, a shield tunneling machine penetrates through a cavity formed after the component is pulled out, and the low-strength soil body which is not grouted and reinforced is directly cut, so that abnormal abrasion of the shield tunneling machine is avoided, and shied body twisting isprevented.