180results about How to "Fast reinforcement" patented technology

The invention provides an ultra-high-performance concrete reinforced concrete column with fiber reinforced polymers wound around a steel pipe, and relates to the technical field of novel combination column reinforced existing structures. FRP cloth is wound around the steel pipe and used for wrapping around and reinforcing existing reinforced concrete columns. A combination column comprises planting ribs, the steel pipe, ultra-high-performance concrete, the FRP cloth and an original reinforced concrete column. Compared with the method for expanding the section of traditional reinforced concrete, high-strength steel pipe concrete (steel pipe self-compaction concrete and steel pipe common fiber concrete) and an angle steel reinforced column, the component can effectively improve carrying capacity, deformability, seismic-resistance and antiseptic durability. Besides, the ultra-high-performance concrete reinforced concrete column is especially suitable for reinforcing high-rise and ultra-high-rise underlying columns, large-span bridge pier columns, structural engineering in a bad environment and industrial factory buildings in a corrosion environment.

The invention discloses a cement-polyurethane composite grouting process capable of blocking water fast. The cement-polyurethane composite grouting process includes the steps of a, performing engineering exploration, to be more specific, designing a plurality of holes after the optimal reaction positions of polyurethane grout are determined according to the stratum cracks or the flowability of flowing water, wherein the holes should communicate water leakage points as much as possible or penetrate a plurality of stratum cracks to allow one hole to penetrate multiple stratums; b, drilling; c, grouting, to be more specific, simultaneously and alternately grouting the polyurethane grout and cement grout into all holes, using the instant foaming and curing feature, which uses water to stop water, of the polyurethane grouted first to stop and block water, using the cement grout grouted later to stop the backflow of the polyurethane so as to form a structure with grouted holes and front blocking and back protection, and repeatedly and alternately grouting for multiple times until water burst is blocked; d, continuing grouting for a certain period of time after the water burst is blocked to guarantee that blocking is completed. By the arrangement, the cement-polyurethane composite grouting process is simple in procedures, capable of blocking water fast, and capable of integrating blocking and reinforcing.

The invention relates to a production method for an inorganic powder material, in particular to a production method for white carbon black with high additive amount applied to high-elastic silicone rubber. The production method comprises the processes of dissolution and refining of water glass, synthesis reaction of the water glass and dilute sulphuric acid, pressure filtration, washing, pulping and drying; the reaction of the water glass and the dilute sulphuric acid comprises the following three steps: generating seed crystal, conducting synthesis reaction and adjusting integral pH value. According to the invention, the synthesis process of three steps is adopted; the specific surface area of the product is reduced by adding a sodium sulfate additive; reaction conditions are controlled strictly; the particle diameter of secondary particles of the product is controlled effectively; the characteristics of small specific surface area, low oil absorption value, high additive amount, high reinforcing performance and short mixing time during mixing with silicone rubber are provided; the raw materials are easy to obtain; the process is easy to control; no extra equipment is needed; the production can be conducted on an original production line.

The invention discloses a vacuum preloading foundation treatment construction method. The method includes the first step of conducting survey staking out, the second step of laying geotechnical cloth, the third step of laying vitex fences, the fourth steps of laying a soil cushion layer, the fifth step of laying a sand cushion layer, the sixth step of arranging a plastic drain plate in a striking mode, the seventh step of excavating a pressed film ditch, the eighth step of cleaning and embedding a plate head, the ninth step of embedding filter tubes and a film outlet device, the tenth step of cleaning and leveling the surface of the sand cushion layer, the eleventh step of laying a plastic film, the twelfth step of constructing a dam, the thirteenth step of vacuum air exhaust, the fourteenth step of vacuum unloading, and the fifteenth step of conducting cleaning and disassembly. According to the method, the strength and the rigidity of a foundation are improved, the reinforcing speed is high, the densification effect is good, the strength increase rate is high, the density of the foundation is improved, the foundation is made to be more stable, and the settling volume of the foundation is reduced. Vacuum is generated through air exhaust, the pore water pressure is effectively reduced, negative excess pore water pressure is generated to increase the effective stress of a soil body, reinforcing is conducted through the pore water pressure so that sphere effective stress increment can be generated, and the construction speed is effectively increased.

The invention discloses a method for regulating and controlling ventilating transformation and quickly reinforcing dredger fill in vacuum. The process of the method comprises the steps of: sequentially hydraulically filling a bottom sand cushion layer, a hydraulically filling mud layer, and an upper sand cushion layer on a primary natural foundation; laying a ventilating filter pipe net, a ventilating pipe and a ventilating valve in the bottom sand cushion layer; laying a drainage filter pipe in the upper sand cushion layer; connecting the drainage filter pipe with a vacuumizing device; arranging a drainage plate between the upper sand cushion layer and the lower sand chusion layer in a striking way; finally seal-capping with geotextile and a plastic sealing film; opening the vacuumizing system; and repeatedly carrying out the operations of closing the ventilating valve, stabilizing vacuum pressure, and draining water bodies in soil bodies and the operation of opening the valve to exhaust added airflows so as to quickly drain the water bodies in the bottom sand cushion layer, the drainage plate and the upper sand cushion layer. The method has the advantages of simple and quick construction, high speed of reinforcement and drainage, and fund saving.

The invention provides expansive-type high-polymer cement paste, a grouting reinforcement device and a grouting reinforcement method, aiming to solve the technical problems that dynamic compaction is not uniform, partial compactness does not meet requirements and differential settlement of buildings occur when a dynamic compaction substitution method is used for miscellaneous fill foundation treatment. The expansive-type high-polymer cement paste comprises, by weight, 91-95 parts of Portland cement, 2-4 parts of soundless cracking agents and 3-5 parts of polypropylene fibers. The expansive-type high-polymer cement paste is injected into stratum evenly through a steel grouting pipe, original cracks are filled with grout in the mode of filling, permeating, swelling and compacting, originally-loose soil particles are rapidly solidified into a whole body, and a mini pile is formed in a drill hole, so that mechanical property of foundation soil is improved, and the effects of improving bearing capacity of the foundation soil and consolidating the foundation are achieved.

The invention discloses a fast mud dehydrating device, and is suitable for indoor experiments. The fast mud dehydrating device mainly comprises a mud dehydrating tank, a hydraulic jack and a two-way vacuum suction filtration system; sand cushions with certain thicknesses are arranged on and under the mud in the mud dehydrating tank, and are matched with a geotextile layer, a waterproof top plate and a waterproof bottom plate to form a whole, meanwhile, vacuum suction filtration channels allowing suction filtration pipes to go through are reserved on both the top plate and the bottom plate, thelifting hydraulic jack is arranged under the bottom plate, the mud is then rapidly dehydrated under the co-action of the vacuum negative pressure and the pressure load; a vacuum pump is connected toa liquid collecting barrel with the containing mark through a vacuum pipe in the two-way vacuum suction filtration system, the liquid collecting barrel is additionally provided with two suction filtration pipes, and the two suction filtration pipes are respectively communicated with the vacuum suction filtration channels on the top plate and the bottom plate. The fast mud dehydrating device has the advantages of two-way vacuum prepressing, the load of the external force can be applied, and the dehydrating efficiency is high.

The invention discloses a fissure-contained rock soil stratum prestressed anchor cable grouting and anchoring construction method. Multiple prestressed anchor cables uniformly distributed on the same one plane are adopted to reinforce a slope to be reinforced; the method comprises the following steps: (1) the rock mass joint fissure development degree of each rock stratum is determined; (2) the lengths of anchoring sections and the hole port positions of anchor cable holes are determined; the prestressed anchor cables include anchor cable bodies, primary grouting pipes and secondary grouting pipes; anchoring tools are mounted at the back ends of the anchor cable bodies; and the anchor cable bodies include multiple steel strands; and (3) the prestressed anchor cables are grouted and anchored: when any one prestressed anchor cable is grouted and anchored, the construction includes the steps of drilling, placement of the anchor cables, normal-pressure grouting, high-pressure grouting, tensioning of the anchor cables and anchor sealing. The method is simple in steps, reasonable in design, convenient to construct, high in construction efficiency and excellent in use effect, and can conveniently and quickly finish the reinforcing process of the slope to be reinforced; and the adopted prestressed anchor cables are low in cost and higher in anchoring force, and can effectively reinforce the slope to be reinforced.

The invention discloses a method for processing ultra-soft soil through combining shallow-surface-layer intermittent strong water-pumping/draining with short-term air-curing. The method comprises the following steps of: arranging horizontal water-pumping/draining pipe networks in a shallow-surface layer of an ultra-soft soil body, arranging water-draining pipe trenches in the surface layer and connecting the horizontal water-pumping/draining pipe networks and the water-draining pipe trenches with water-pumping/draining equipment so as to form a three-dimensional surface-layer water-pumping/draining system for shallow-surface-layer ultra-soft soil; carrying out intermittent strong water-pumping/draining and being aided with surface-layer drainage by using the water-pumping/draining equipment; and meanwhile, combining with the short-term air-curing by using the climate characteristics of strong sunlight and strong wind of coastal areas. According to the invention, the reinforcement for the shallow-surface-layer ultra-soft soil can be effectively and rapidly achieved, thus the invention provides a reinforcement treatment method which is applied to ultra-soft foundations, the shallow-surface layer of which is made of sludge or hydraulic-filled sludge and can greatly save cost.

The invention discloses a surrounding rock reinforcement method for a junction tunnel section in an upper-soft lower-hard stratum constructed adopting a shield method and a mining method. The method comprises the steps that 1, tunnel face grouting reinforcement is carried out, specifically, grouting reinforcement is carried out on stratum in front of an excavation face of an upper tunnel body by adopting grouting pipes; 2, junction surface grouting reinforcement is carried out, specifically, grouting reinforcement is carried out on the reinforced stratum by adopting sleeve valve pipes; 3, tunnel arch part advanced support is carried out, specifically, advanced support is carried out on an arch part of the junction tunnel section; 4, grouting pipe removal is carried out; and 5, tunnel faceplugging is carried out, specifically, a tunnel face is plugged through concrete backfilling, and a tunnel face plugging structure is obtained. The method is reasonable in design, simple and convenient to construct and good in use effect, and surrounding rock of the junction tunnel section is effectively reinforced by the method of combining the surface grouting reinforcement with the in-tunnel reinforcement so that the mechanical property of the surrounding rock can be effectively improved; and the tunnel face of the junction tunnel section is reliably plugged before and after reinforcement so that tunnel safety construction can be effectively guaranteed, and ground settlement caused by excavation can be effectively reduced.

The invention relates to a screen cloth reinforcing method. The screen cloth reinforcing method comprises the following steps: embedding unfoamed EVA particles into meshed holes of the screen cloth, fixing the EVA particles into the screen net through thermal foaming or hot pressing, and reinforcing the screen cloth. Compared with the prior art, the screen cloth reinforcing method has the following advantages: the screen cloth is reinforced by the EVA particles subjected to foaming or hot pressing, the EVA is a polymer of ethylene vinyl acetate, the heat resistance, the weather resistance, thehardness, the tensile force, the elasticity and the like of the screen cloth are improved by using the characteristics of ethylene vinyl acetate, and the method is high in reinforcing speed, remarkable in effect and stable in reinforcement. Different parts of sport shoe fabric can be subjected to different-strength screen net reinforcement according to requirements, different tensile forces and different control forces of different parts of the sport shoe fabric can be realized, and the use range of the screen cloth is enlarged.

The invention discloses a shield tunnel circumferential intelligent reinforcement structure and a reinforcement method in the field of tunnel reinforcement technology, including a reinforcement structure body, the top of the reinforcement structure body is evenly fixed and installed with shield segment connecting columns by bolts, so that The bottom left end of the reinforcement structure body is fixedly connected with a support column by bolts, and the bottom right end of the reinforcement structure body is provided with a fixing groove, and the fixing groove and the support column cooperate with each other. This kind of shield tunnel circular intelligent reinforcement structure and reinforcement method, the design is reasonable, and the mortar layer, steel plate and carbon fiber composite molding are used to improve the ultimate bearing capacity and rigidity of the shield tunnel, and can realize rapid reinforcement of the tunnel under harsh conditions such as narrow space and short reinforcement time, and adopt CCD The image sensor, stress sensor and water seepage sensor can monitor the image inside the shield tunnel in real time, and monitor the strain distribution and water seepage of the reinforced structure.

The invention discloses a tunnel supporting layer mold spraying mechanism and method. The mold spraying mechanism comprises a spray head assembly, a mold plate mechanism and an injection system, wherein the injection system is connected with the spray head assembly; the spray head assembly is arranged on the upper part of the mold plate mechanism, and a mold cavity to be poured is formed by the mold plate mechanism and a rock wall; the injection system conveys concrete to the spray head assembly, and the spray head assembly sprays the concrete into the mold cavity from the upper part of the mold plate mechanism in the direction not perpendicular to the rock wall. According to the innovatively designed tunnel supporting layer mold spraying mechanism and method and based on the actual situation of the mold cavity between the mold plate mechanism and the excavated rock wall, the displacement, the angle, the direction, the height and the like of the spray head assembly can be adaptively adjusted, the controlling difficulty is lowered, and the controlling accuracy is improved; meanwhile, a mold spraying material agent injection system enables the concrete and an accelerator to be mixedquickly, adequately and evenly; and then the mixed concrete can be sprayed into the mold cavity and a supporting layer is formed rapidly, and the purpose of quickly reinforcing the tunnel rock wall isachieved.

The invention discloses a method for reinforcing an underwater structure through fiber composite materials. The method comprises the following steps that the concrete surface of an underwater structure to be reinforced is processed; underwater epoxy resin or underwater non-dispersed concrete or underwater non-dispersed mortar is utilized to repair and restore on a cleaned up damage portion of the underwater structure to be reinforced, and protruding portions of the surface of the structure are polished smooth; underwater resin adhesive is uniformly daubed on the fiber composite materials with the size cut well; at lest one layer of the fiber composite materials daubed by the resin adhesive are annularly pasted to the surface of the damage repairing portion of the underwater structure to be reinforced, the fiber composite materials are pasted on the surface of the underwater structure to be reinforced layer by layer, and annular lap joint portions of the layers are mutually staggered. According to the method, the reinforcing speed is high, the construction period is short, the process is simple, water repellent treatment is carried out because cofferdam water abandoning is not needed in construction, the construction has small influences on a navigation channel, abrasion of acid and alkali to the concrete structure can be prevented after reinforcing, and the service life of the underwater structure to be reinforced is prolonged.

The invention discloses a negative-pressure three-dimensional flow-guiding disturbance impact solidification dredger filling method. The negative-pressure three-dimensional flow-guiding disturbance impact solidification dredger filling method mainly comprises the steps that a dredger fill area is cleaned and flattened; a ditch is horizontally formed in the dredger area or a horizontal water seepage pipe is arranged by inclining by 0.5-5 degrees, and backfilling is conducted through medium and rough sand-gravel aggregate; a dam and a drainage canal are constructed on the periphery of the dredger fill area, and a water diversion pipe and an automatic-flowing drainage pipe are pre-buried; a dredger fill pipeline is led into the dredger fill area in the dam; slurry is guided into the surface layer of the dredger fill area and underground water is guided into the drainage canal after silt deposits; a water suction pump is connected to the outer port of the drainage pipe, and then forced drainage is conducted. Meanwhile, the invention creatively provides a suspension controllable dredger fill area drainage device, a movable multifunctional integrated well tube draining and vibrating-flushing device and technologies matched with the suspension controllable dredger fill area drainage device and the movable multifunctional integrated well tube draining and vibrating-flushing device. Compared with the prior art, the reinforcing period can be shorted by about 50% and the comprehensive unit cost can be reduced by about 45% under the same condition, and the bearing capacity of a fill stratum within the overall depth range can reach 60-80 kPa after treatment.

The invention discloses an in-stratum stepped-heaped-weir-type safe grouting construction process for blocking large water gushing from a sidewall of a deep foundation pit. The safe grouting construction process comprises the following steps: the amounts of gushed water and silt from the sidewall at the deep part of the foundation pit are observed and calculated; a water drain pipe is arranged ina water gushing point to drain water; backpressure bodies are arranged around the water gushing point to form backpressure on the sidewall, of the foundation pit, around the water gushing point; holesare drilled in the surface of the sidewall where the water gushing point is positioned, the holes are divided into at least two rows, the depths of the first row of holes and the second row of holesare arranged in a vertically-stepped form, the first row of holes is near a supporting protective body of the sidewall, and the depths of the drilled holes decrease sequentially from inward to outward; and grouting is performed for blocking. Vertical drilling is carried out quickly in the surface on the outer side of the sidewall, where the water gushing point in the the deep part of the foundation pit is positioned; aggregate and anti-dispersion high-early-strength rapid-hardening grout are injected into a water guide channel or a formed cavity through the drilled holes to rapidly form a water-blocking curtain in a stratum where water gushes out, so as to block an underground water gushing channel and achieve the purposes of quickly controlling water gushing and by grouting, reinforcing the stratum damaged by water gushing.