37results about How to "Various construction methods" patented technology

The invention discloses a hydraulic arrangement type sand discharging structure, which comprises sand discharging pipelines, wherein the sand discharging pipelines are laid on the bottom parts of a reservoir, the tail ends of the sand discharging pipelines are connected with a bottom hole or a tunnel of a dam body and provided with gate valves to control the discharge rate; the head ends of the sand discharging pipelines are extended toward up stream, the end parts or proper parts of the sand discharging pipelines are provided with curved pipe segments tilted upward, and upper end openings of the curved pipe segments are higher than the expected sand silting face; and one side or / and two side pipe walls of the sand discharging pipes is / are provided with branch pipelines, the upper side pipe walls are provided with gate wells, and the inside of each gate well is provided with control valves. The number of sand discharging pipelines is more than two, and the sand discharging pipelines are laid on the reservoir bottoms on the bank side and in the middle of the reservoir respectively. The number of the gate wells is more than one, the gate wells are arranged on different positions on the upper side pipe wall of each sand discharging pipeline. In the mode of changing the position of a water inlet of a sand discharging hole of the reservoir, the structure utilizes the distributing type space difference generated in laying the sand discharging pipelines to achieve the aim of widening the range of sand discharging; moreover, the structure also has the advantages of unnecessary external energy, high sand discharging efficiency and good social and economic benefits.

The invention discloses a bridge structure, mainly comprising: piers arranged on the bases, box girders arranged on the piers. It is characterized in that: the top box girder of the bridge is an arched single-box multi-chamber concrete box girder; the bottom pier cross bridge is arranged with an upward column; the top part of the column is a pier column of abducted curved or straight Y type, I I type and H type; the bottom part of the column is straight or abducted curve. The technical characteristics of the invention are: firstly, the structure of the bridge is harmonious, reasonable and the appearance is elegant; secondly, the bridge span is enlarged, and the arched box girder can be preformed or on-site casting according to the bridge width, span and situations of the construction site, by which the project time can be shortened and the effect to the traffic is reduced.

The invention relates to the technical field of a paint, and concretely discloses an aqueous epoxy zinc-rich priming paint and a preparation method thereof. The priming paint comprises the following raw materials in parts by weight: 10-30 parts of epoxy resin, 0.1-0.5 parts of a wetting dispersant, 0.1-0.5 parts of an antifoaming agent, 1-5 parts of a film-forming auxiliary agent, 40-70 parts of sheet zinc dust, 4-20 parts of spherical zinc dust, 0-25 parts of ferrophosphorous powder, 0.2-2 parts of graphene oxide, 0.2-2 parts of gas-phase silica, 0.1-0.5 parts of a flash rust-prevention agent, 10-30 parts of a curing agent, 0.1-1 part of magnesium lithium silicate, and 5-10 parts of deionized water. The two-component aqueous epoxy zinc-rich priming paint employs a component A and a component B, the construction is simple, the VOC content is low, the hardness is high, adhesive force, impact resistance and sag resistance are excellent, the anti-settling performance is good, the storageperformance of the priming paint is increased, and the anti-salt spray performance is excellent.

The invention relates to the field of tunnel engineering, and discloses a primary blasting well forming method for a middle guide well. The method includes the steps: (1) performing measuring and positioning to determine the wellhead position of a vertical well; (2) mechanically digging a wellhead of the vertical well; (3) reversely digging the bottom of the vertical well upwards; (4) according toa blasting design lofting blast hole position of the middle guide well: performing lofting to form 2m*2m middle guide well position of the vertical well by the aid of a total-station instrument, andlabeling the position of the blast hole position; (5) completely drilling a blast hole by a down-the-hole drill once; (6) plugging the bottom of the blast hole; (7) filling the blast hole with explosive; (8) plugging an upper opening of the blast hole with blast sludge after the blast hole is plugged by the explosive; (9) line connecting and explosion initiating, connecting starting detonators inthe blast holes in a clustering manner, and performing differential initiation of non-electric millisecond detonators. The method has the advantages that construction safety is improved, potential safety hazards are reduced, and life safety of construction staff is guaranteed.

The invention discloses a formula and a construction method of concrete. The formula comprises the following components in parts by weight: 80-100 parts of cement, 20-30 parts of 48-70-mesh fly ash, 30 parts of 10-mesh concrete waste residue, 300-340 parts of gravel, 30-40 parts of water, 6-8 parts of a cement concrete enhancer, 5-7 parts of a water reducer and 5-7 parts of a retarder. The construction method comprises the following processes: stirring concrete, pouring, compacting and curing the concrete, jointing a seam, paving mat coat and the like. Through adoption of the formula, the concrete is enabled to have sufficient structural strength so as to achieve relatively high durability while relatively good water permeability can be ensured; pores with multi-stage diameters can be formed, and when low-diameter pores are blocked, high-diameter pores can still permeate water, so that the water permeability time is prolonged; the construction efficiency is high, and manpower and material resources are saved.

The invention discloses an SS-type electric field coupling wireless power transmission system based on a negative resistor. The system comprises the negative resistor, a primary side resonator, a secondary side resonator, a coupling capacitor metal electrode plate and a load RL; the primary side resonator comprises a primary side transmitting coil and a primary side resonant capacitor C1 which areconnected in series, and the primary side transmitting coil includes a primary side inductor L1 and a primary side coil internal resistor R1 which are connected in series; the secondary side resonator includes a secondary side receiving coil and a secondary side resonant capacitor C2 which are connected in series, and the secondary side receiving coil includes a secondary side inductor L2 and a secondary side coil internal resistor R2 which are connected in series; the coupling capacitor metal electrode plate is connected to the primary side resonator and the secondary side resonator, the negative resistor is connected to the primary side resonator, and the load RL is connected to the secondary side resonator. According to the system, the structure is simpler, and the working frequency ishigher. When the transmission distance changes, the operating frequency of the system automatically satisfies the eigenfrequency, a constant high-level transmission efficiency can be achieved withina certain long transmission distance, and meanwhile the output power is kept constant.

The invention discloses a water-based over-rust coating primer and a preparation method thereof. The primer comprises, by weight, 70-95 parts of a water-based acrylic emulsion, 1.5-6 parts of a coalescing agent, 5-30 parts of water and 0.3-8 parts of other auxiliaries. The primer disclosed by the invention does not use an antirust pigment with heavy metals any more, does not use an antirust pigment containing a zinc element any more, and is thus environment-friendlier; the primer disclosed by the invention does not use tannic acid and other organic acids any more, so no acidic substance residue in any free form exists in a paint film; and the primer disclosed by the invention is excellent in adhesive force, an adhesive force test shows that the adhesive force of the primer is grade 0 (seea scratch test), so the problem of poor adhesive force of a rust conversion coating is solved. The test adhesive force of the primer is still grade 0 after 1000 hours of exposure to salt spray (see adivision test after 1000 hours of exposure to salt spray).

A TPO self-adhesive waterproof membrane, which is composed of a TPO self-adhesive waterproof membrane layer, an isolation film layer, and a self-adhesive waterproof membrane layer. Side, the bonding side is respectively: the TPO layer bonding side integrated with the TPO layer, the self-adhesive layer bonding side integrated with the self-adhesive waterproof membrane layer, the TPO layer bonding side and the self-adhesive layer Adhesive edges are set in the opposite direction. Since the two-layer structure is equipped with adhesive edges, the two membranes with independent waterproof capabilities are combined into one through a unique process, so that the purpose of two layers of waterproofing can be achieved through one construction, and the full-area self-adhesive skin-type waterproofing is truly realized. , The coil is provided with a separation film, which solves the problem of TPO layer deterioration caused by oil leakage from the self-adhesive layer to the TPO layer. It has the advantages of high strength, excellent high and low temperature performance, high elongation, strong crack resistance, and self-healing properties of self-adhesive rubber bitumen waterproofing membrane.

The invention discloses a hydraulic arrangement type sand discharging structure, which comprises sand discharging pipelines, wherein the sand discharging pipelines are laid on the bottom parts of a reservoir, the tail ends of the sand discharging pipelines are connected with a bottom hole or a tunnel of a dam body and provided with gate valves to control the discharge rate; the head ends of the sand discharging pipelines are extended toward up stream, the end parts or proper parts of the sand discharging pipelines are provided with curved pipe segments tilted upward, and upper end openings ofthe curved pipe segments are higher than the expected sand silting face; and one side or / and two side pipe walls of the sand discharging pipes is / are provided with branch pipelines, the upper side pipe walls are provided with gate wells, and the inside of each gate well is provided with control valves. The number of sand discharging pipelines is more than two, and the sand discharging pipelines are laid on the reservoir bottoms on the bank side and in the middle of the reservoir respectively. The number of the gate wells is more than one, the gate wells are arranged on different positions on the upper side pipe wall of each sand discharging pipeline. In the mode of changing the position of a water inlet of a sand discharging hole of the reservoir, the structure utilizes the distributing type space difference generated in laying the sand discharging pipelines to achieve the aim of widening the range of sand discharging; moreover, the structure also has the advantages of unnecessary external energy, high sand discharging efficiency and good social and economic benefits.

The invention discloses a wall-mounted wing wall combined with cast-in-place pile foundation pit supporting and a construction method thereof. The wall-mounted wing wall comprises cast-in-place piles, a pile top platform and wall plates; the wall plates are located in front of the exposed faces of the cast-in-place piles, and the rear walls of the wall plates are connected with the exposed faces of the cast-in-place piles in a pouring manner to serve as main soil retaining and supporting structures of the wing wall; and the pile top platform is fixed to the tops of the cast-in-place piles, and the pile top platform and the lower wall plates are combined to serve as a wing wall upper supporting structure. The construction method of the wall-mounted wing wall comprises the steps that firstly, basic plane scabbling and cleaning are conducted on original cast-in-place piles and pile top beams, then net hanging reinforcing steel bar drilling is conducted, then rear reinforcing steel bars are buried, a double-layer reinforcing steel bar net is arranged, a formwork is erected, and finally layered concrete pouring is conducted, so that the cast-in-place piles, the pile top platform and the wall plates form the integrated wall-mounted wing wall, and formwork removal and forming are conducted. The wall-mounted wing wall can adapt to the limitation of various complex terrains and site conditions, the integrity of a supporting structure and a soil retaining structure is improved, the construction period is shortened, and the construction cost is reduced.

The invention discloses an active inorganic anticorrosive coating for improving the bonding strength between a steel bar and concrete. The active inorganic anticorrosive coating comprises the following components in parts by weight: 20-35 parts of phosphorus pentoxide, 20-40 parts of silicon oxide, 10-25 parts of aluminum oxide, 5-30 parts of an active binder, 10-20 parts of a flatting agent and 0-5 parts of an anti-cracking agent. The invention further discloses a coating method of the active inorganic anticorrosive coating for improving the bonding strength between the reinforcing steel barand the concrete. The coating method comprises the following steps: 1) preparing a coating; 2) performing base material treatment; 3) coating; 4) sintering; 5) cooling. The method is simple in process, low in cost and good in corrosion resistance; after the active binder is added, the bonding strength between the coating plain round steel bar and the concrete is 4-8 times that of a common plain round steel bar, and the bonding strength between the coating twisted steel bar and the concrete is 1.5 times or above that of the common twisted steel bar; the dynamic bonding strength between a steelbar coated with the coating and concrete and the bonding strength after high temperature are obviously superior to those of a common steel bar and an epoxy coating steel bar.

The invention relates to a spray quick-setting modified asphalt waterproof paint which comprises a component A and a component B, wherein the component A comprises rubber, asphalt, a softener, an anionic surfactant, a stabilizer and water; the component B comprises an inorganic salt, a composite ferric aluminum copolymer and deionized water; the component A and the component B are respectively prepared and then are applied. According to the paint, the condition that the asphalt and latex are not evenly mixed is avoided; meanwhile, use of anionic latex is avoided; the production cost is greatly reduced; and the spray quick-setting modified asphalt waterproof paint has important practical significance in practical industrial production and application.

The invention discloses an electric field coupling singlet line electric energy transmission system based on a negative resistor. The system comprises a negative resistor, a radiating circuit, a receiving circuit, a load, and a single insulation wire, wherein the negative resistor is connected with the radiating circuit, the receiving circuit is connected with the load, and the single insulation wire is connected with the radiating circuit and the receiving circuit. The radiating circuit comprises a primary side electrical inductance, a primary side metallic conductor and a radiating circuit internal resistor, wherein the primary side electrical inductance, the primary side metallic conductor and the radiating circuit internal resistor are connected in series; the receiving circuit comprises a secondary side electrical inductance, a secondary side metallic conductor and a receiving circuit internal resistor, wherein the secondary side electrical inductance, the secondary side metallicconductor and the receiving circuit internal resistor are connected in series; the primary side metallic conductor and the secondary side metallic conductor generate displacement current to the groundor other surrounding conductive objects, and the displacement current of the primary side metallic conductor and the secondary side metallic conductor are respectively represented as primary side equivalent capacitance and secondary side equivalent capacitance; the electric energy transmission is achieved between the radiating circuit and the receiving circuit by the means of electric field coupling between the primary metallic conductor and the secondary side metallic conductor. According to the electric field coupling singlet line electric energy transmission system based on the negative resistor, the structure is simpler, the working efficiency is higher, the constant transmission efficiency can be achieved within a long distance, and the system electric energy transmission is more stable.

The present invention relates to a construction method for protecting an existing building inside a foundation pit, comprising the following steps: step 101, determining the excavation contour line of the foundation pit, and setting a preset support around the perimeter of the protected building Set up several supporting piles on the pile contour line, the contour line of the supporting piles is a regular polygon or a circle with an even number of sides, and the area outside the contour line of the supporting piles and within the contour line of the excavation of the foundation pit is taken as the foundation pit Excavation area; step 102, after the construction of the support pile is completed, the pile head is removed, and the pile top crown beam above the support pile is constructed; step 103, in the excavation area of ​​the foundation pit, excavate downwards to the anchor cable to be constructed in the current layer 800mm to 1000mm below; step 104, constructing the reinforced mesh sprayed concrete surface layer on the outer wall of the support pile, making its shape consistent with the shape of the support pile outline; S105, fixing all the support piles by anchor cables; Step 106, repeat steps 103-105 until the excavation reaches the bottom elevation of the foundation pit, and construct the underground space structure above the bottom elevation of the foundation pit and within the excavation area of ​​the foundation pit.

The invention provides a bearing inner ring machining device. The bearing inner ring machining device comprises a bracket, a bearing fixture and a bearing machining device; telescopic blocks are arranged at the two sides of a top frame and rotatably connected with the top frame, the lower end of each telescopic block is provided with a telescopic rod, the lower end of each telescopic rod is provided with a limiting groove, and the two sides of the lower end of each telescopic block are provided with support blocks; support columns at the lower end are rotatably connected with a base, the lowerend of the top frame is provided with the bearing fixture, the two sides of the upper end of the base are provided with rotating blocks, the rotating blocks are provided with limiting holes, the baseis rotatably connected with the rotating blocks through base rotating shafts, and the rotating blocks are provided with the limiting holes; the base is detachably connected with the bearing machiningdevice, a motor connecting block is arranged in the middle of the upper end of the base and provided with motor limiting blocks, a motor is arranged in the motor connecting block, the upper end of the motor is provided with a motor head, and bearing machining is conveniently conducted in various modes; the bearing machining device is detachably connected with the base to facilitate replacement and repair, the bearing fixture is suitable for bearings different in size, the angle of the top frame can be adjusted by a rotating rod, and the construction mode of the device is more diversified.

An inorganic anticorrosive coating layer for high-strength metal. The coating layer is formed on the surface of high-strength metal by sintering a coating at a high-temperature of 500-800°C. The coating comprises 25-35 parts of a silicon oxide, 10-25 parts of phosphorus pentoxide, 10-25 parts of aluminum oxide, 2-15 parts of a fiber, 15-30 parts of a modifier, and 1-3 parts of an anti-cracking agent, wherein the fiber is one or a combination of two or three of alumina silicate fiber, basalt fiber, and calcium carbonate fiber. Multiple sealing holes of which the diameters account for 1 / 30-1 / 10 of the thickness of the coating layer are distributed inside the coating layer, and the number of the sealing holes is reduced from inside to outside. The porosity of a porous inner layer close to the surface of the high-strength metal is 2-15%, and the porosity of a dense outer layer far away from the surface of the high-strength metal is 0-2%. The inorganic anticorrosive coating layer is good in toughness, high in adhesion performance to a substrate, excellent in corrosion resistance, diverse in construction mode and low in use cost, and no crack penetrating through the coating layer is caused during micro strain of 2800-3000.

The invention discloses a photocatalytic antibacterial antifouling inorganic anticorrosive coating. The coating is prepared from the following raw materials in parts by weight: 25 to 35 parts of phosphorus pentoxide, 35 to 50 parts of silicon oxide, 10 to 25 parts of calcium fluoride, 1 to 4 parts of bacteriostatic agent and 5 to 20 parts of flatting agent. The invention further discloses a coating method of the photocatalytic antibacterial antifouling inorganic anticorrosive coating. The coating method comprises the following steps of (1) coating preparation, (2) base material treatment, (3)coating, (4) sintering and (5) cooling, and the photocatalytic antibacterial antifouling inorganic anticorrosive coating is obtained. By adding the bacteriostatic agent, the antibacterial antifoulingcapacity of the coating is greatly improved, the process is simple, the seawater corrosion resistance is good, and the construction modes are diversified.