55results about How to "The reinforcement method is simple" patented technology

The invention discloses a peaty soft soil stratum subway station construction technology. A main structure of a constructed subway station comprises base plates, side walls, top plates and middle plates distributed between the top plates and the base plates. Underground consecutive walls are arranged on outer sides of the two side walls. The base plates, the side walls, the middle plates and the top plates are all of a rebar concrete structure formed by pouring waterproof concrete. The subway station construction technology comprises the following steps: (1) underground consecutive wall construction, (2) foundation reinforcement, namely, three-shaft stirring piles are used for reinforcing the foundation of excavated foundation pits, (3) vacuum water falling, namely conducting vacuum well point water falling construction on the foundation pits needing excavating, (4) foundation pit excavation, namely, an open excavation method is used for conducting earthwork excavation on the foundation pits needing excavating with a plurality of excavating layers from top to bottom, (5) subway station main structure construction. The method is simple, convenient to realize, quick in construction speed, capable of being ensured in construction quality easily, and good in construction effect, and enables the subway station construction process of peaty soft soil stratum to be completed simply, quickly and with high quality.

The invention discloses a process for excavating and constructing soft rock tunnels. Each constructed soft rock tunnel comprises two tunnel portal sections and a tunnel trunk section. Each tunnel trunk section is arranged between the two corresponding tunnel portal sections in a connected manner, surrounding rock level of two tunnel portals of each constructed soft rock tunnel is V level, surrounding rock level of each tunnel trunk section is IV level, and entrances and exits of the constructed soft rock tunnels simultaneously start to be constructed and are constructed in opposite directions. The process includes constructing procedures of firstly, determining methods for excavating the tunnel trunk sections, to be more specific, simulating excavating and constructing procedures by the aid of tunnel excavating and constructing simulation software, and determining the methods for excavating and constructing the tunnel trunk sections according to simulation results; secondly, excavating and constructing the tunnels, to be more specific, dividing each soft rock tunnel to be constructed into a plurality of sections from the rear of the corresponding tunnel portal to the front and starting to excavate and construct the multiple sections. The tunnel trunk sections are excavated in the excavating and constructing procedures by the aid of full-section techniques. The process has the advantages of simple steps, reasonable design, convenience in construction, good service effects, safe constructing procedures and capabilities of easily and conveniently completing the soft rock tunnel excavating and constructing procedures and guaranteeing the construction periods.

The invention discloses a method for reinforcing and treating a liquefied sandy soil foundation. A plurality of drainage pipes are embedded in a to-be-reinforced sandy soil layer of the sandy soil foundation, a plurality of liquid inlet pipes are embedded in the periphery of each drainage pipe, and the upper ends of the liquid inlet pipes are communicated with a reinforcing liquid storage pool through a booster pump; the upper ends of the drainage pipes are connected with a vacuum pump through guide pipes; during reinforcing operation, reinforcing liquid is injected into the reinforcing liquid storage pool, the vacuum pump and the booster pump are started, the pressure difference is produced in the sandy soil foundation, the reinforcing liquid flows into the sandy soil foundation through the liquid inlet pipes, the reinforcing liquid and water in the sandy soil foundation are together drained from the drainage pipes, and operation is repeatedly conducted till reinforcing is completed. The sandy soil foundation is reinforced through the microorganism reinforcing liquid, the reinforcing liquid is high in mobility and can go deep into the sandy soil foundation, the compactness of the sandy soil foundation is improved, and the liquefaction-resistant strength of the foundation is improved; in addition, the reinforcing method is simple, the reinforcing depth is large, and the influences on the surrounding environment and adjacent buildings are small.

The invention relates to a loess relic efflorescence-proof reinforcing agent and a preparation and reinforcing method thereof. The method comprises the following steps: dissolving 5-25g of oxalate and 1-15ml of CB-I reinforcing agent prepared from phosphoric acid in every 1000ml of ethanol, and dissolving 15-150g of CB-II reingorcing agent prepared from barium hydroxide in every 2500ml of carbinol; and utilizing a dual reinforcing method of carrying out microprecipitation and adsorption on the losess relic by the CB-I reingorcing agent and the CB-II reingorcing agent, and utilizing a three-step dripping mode to achieve the reinforcing effect. By adopting the technical scheme of the invention, a loess relic efflorescence-proof reinforcing material and the reinforcing method which are suitable for dry, semi-dry and humid environment conditions of a semihumid area are obtained. The chemical raw materials of the invention are technical pure, and has the advantages of low cost, simple manufacturing process and reinforcing method, and easy operation, thereby having good market development prospect. After being processed by the loess relic efflorescence-proof reinforcing material of the invention according to the reinforcing method, the loess relic shows excellent reinforced effect.

The invention discloses a soil body reinforcement device for pipe jacking construction in a sand soil foundation. The reinforcement device comprises a water injection pool, a water injection pump, a primary water injection guide pipe, water injection through pipes, secondary water injection guide pipes, water injection wells, water pumping wells, secondary water pumping and water collecting guide pipes, water pumping and water collecting through pipes, a primary water pumping and water collecting guide pipe, a water pumping pump and a water storage pool, wherein the water injection wells and the water pumping wells are positioned in the sand soil foundation; microorganism consolidation fluid is contained in the water injection pool; a water outlet of the water injection pool is connected with a water inlet of the water injection pump through a pipeline; a water outlet of the water injection pump is connected with a water inlet of each water injection well through a water injection pipeline assembly; a water outlet of each water pumping well is connected with a water inlet of the water pumping pump through a water pumping pipeline assembly; and a water outlet of the water pumping pump is connected with a water inlet of the water storage pool through a pipeline. A reinforcement method has the advantages that the strength stability of the sand soil foundation can be effectively improved; the operation is convenient; the influence on surrounding environment is small; the efficiency is high; and the reinforcement treatment cost of the sand soil foundation can be greatly reduced.

The invention discloses a rigid connection construction of a shear beam for splicing prestressed concrete box girders. The rigid connection construction comprises shear beams (1), small longitudinal beams (2), a new bridge box girder (3), an old bridge box girder (4), wet joints (5), shear bolt pins (6) and anchor bolts (7). The rigid connection construction has the advantages of reasonable structure, definite stress, convenient construction, and small traffic impact; besides, the rigid connection construction is economic and safe, is high in fatigue resistance and durability, also has the effect of structure reinforcement, and can enable the prestressed concrete box girders of a new bridge and an old bridge to form a good whole. The invention further provides a construction technology of the rigid connection construction of a shear beam for splicing prestressed concrete box girders.

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 provides a novel formula for reclamation shoal soft soil suitable for ultra soft soil hydraulic reclamation method. The formula comprises the following components, by mass part: 10 parts of dry soil powder, 2.40 parts of cement, 0.72 part of water glass, 0.576 parts of fly ash, 0.132 part of silicone powder, 0.12 part of gypsum powder, 6.08 parts of water, and 0.072 part of py4 composite admixture. According to a large number of indoor orthogonal experiments by the invention, reinforcement soft soil for hydraulic reclamation and water drainage method in Wenzhou coast, which mainly includes sludge reclamation, is mixed with cement and a plurality of admixtures and compound additives, and pressure resistance, shear resistance and compression performance of the soil can be greatly changed; and compared with s conventional cement formula, the novel formula consumes less supplies, but can greatly improve pressure resistance, shear resistance and compression performance of cement shoal soft soil, especially improve early compressive strength and significantly reduce settlement after construction. Therefore, the formula has important meaning for large area utilization and construction of ultra soft soil hydraulic reclamation coastal reclamation land in coastal southeastern industrial belt.

The invention relates to a formwork reinforcement system with overall pouring construction of an L-type short-leg shear wall. The system comprises an L-type short-leg wall body 1 and an L-type short-leg wall top board 2; outer side wood plywood formworks 3 and inner side wood plywood formworks 4 are arranged on the outer sides and the inner sides of the L-type short-leg wall body 1 and the L-type short-leg wall top board 2, and end portion formworks 7 are arranged at the end portions of the L-type short-leg wall body 1 and the L-type short-leg wall top board 2; outer side back edge wood lumps 9 are arranged between the outer side wood plywood formworks 3 and a double-steel-pipe outer formwork 11; inner side back edge wood lumps 10 are arranged between the inner side wood plywood formworks 4 and a double-steel-pipe inner formwork 12; end portion wood lump back edges 24 are arranged on the outer sides of the end portion formworks 7 and located between end portion double-steel-pipe steel frameworks 21 and the end portion formworks 7; and the inner side back edge wood lumps 10 and the outer side back edge wood lumps 9 are bound to the double-steel-pipe inner formwork 12 and the double-steel-pipe outer formwork 11 through iron wires 20.

The invention discloses a method for augmentation of soluble handwriting on paper historical relics. The method applies chitosan water-free ethanol dispersion with an over 300,000 molecular weight, an over 75% deacetylation degree and a less than 80 micrometer particle size to augment the mechanical strength of the handwriting on historical paper relics, the augmentation method is simple, environmental friendly and non-toxic. The method not only can prevent the handwriting from becoming blurry, but also can augment the mechanical strength of the paper relics, prevent the molding of the paper relics; after augmentation the water-free ethanol can evaporate with no heating, thus no secondary damage is inflicted on the paper relics. Moreover the augmented paper relics are not picky on the environmental conditions. Normal temperature and conditions are adequate for storage.

The invention relates to an external prestressing reinforcing structure and method for a T-shaped concrete beam. The structure comprises multiple vertical transverse partition plates arranged on the lower side of a T-shaped concrete beam flange side by side. Horizontal supporting cushion plates in pairs are arranged at the bottom of a T-shaped concrete beam web, and the supporting cushion plates in each pair are located between two adjacent transverse partition plates; in the transverse partition plates on the two sides of the supporting cushion plates, one end of a high-strength aluminum alloy rib is fixed to one transverse partition plate through an aluminum alloy bolt to form an anchoring end, and the other end of the high-strength aluminum alloy rib is fixed to the other transverse partition plate through a wedge-shaped strand tapered anchorage to form a tensioning end; and the middle portion of the high-strength aluminum alloy rib bypasses the lower sides of the supporting cushion plates and is in a horizontal state. By the adoption of the structure and method, the bearing capacity and durability of the T-shaped concrete beam can be improved while it is guaranteed that the bearing performance of the T-shaped concrete beam is not reduced, and a reinforcing effect is good; and meanwhile prestress can be effectively applied to an aluminum alloy through the formed anchoring end and the formed tensioning end.

The invention belongs to the technical field of concrete structural maintenance and reinforcement and particularly relates to a method for reinforcing underwater concrete structure by ultrahigh-performance concrete. The method is characterized by including steps of to-be-reinforced area surface clearing, to-be-reinforced concrete structure basic cleaning, reinforcement cage placement, form plate mounting, gravel and aggregate pouring, underwater rapid-hardening mortar pouring, ultrahigh-performance concrete pouring and form removal after curing. The method has advantages of simplicity, convenience, remarkable improvement of bearing capacity and durability of the reinforced concrete structure, and the like.

The invention discloses a rammed earth wall reinforcing method which comprises steps as follows: 1, building brick columns for covering two ends of a rammed earth wall at the two ends of the rammed earth wall; 2, when building the brick columns to the 1 / 5-1 / 4 height position of the rammed earth wall, punching holes in the two ends of the rammed earth wall, then inserting anchor rods with cement mortar spread on surfaces, and continuously building the brick columns; 3, when building the brick columns to the 1 / 3 height position of the rammed earth wall, digging grooves in two sides of the rammed earth wall and setting reinforcement mortar belts; 4, when building the brick columns to the 2 / 5-1 / 2 height position of the rammed earth wall, repeating the procedure of Step 2; 5, when building the brick columns to the 2 / 3 height position of the rammed earth wall, repeating the procedure of Step 3; 6, when building the brick columns to the 3 / 4-4 / 5 height position of the rammed earth wall, repeating the procedure of Step 2; 7, when building the brick columns to be flush with the rammed earth wall, finishing reinforcement of the rammed earth wall. The reinforcing method is simple, the construction cost is low, and the seismic performance of the rammed earth wall is improved significantly.

The invention discloses a cave foundation reinforcing method, and relates to the technical field of building construction. The cave foundation reinforcing method aims to solve the problems that if anexisting pouring method is implemented, existing roads on the ground surface need to be dismantled, the grouting range is large, the construction difficulty is increased, and the construction cost isfurther improved. The cave foundation reinforcing method comprises the following steps that after foundation pit excavation, supporting and precipitating are completed, a geophysical prospecting method is adopted on site, cave distribution characteristics are deduced through cooperation of the geophysical prospecting method of the geological exploration, and a proved cave boundary line and an unproved cave boundary line are determined according to geophysical prospecting data; a plurality of double-fluid grouting holes are drilled along the outer edge of the proved cave boundary line, so thata cave to-be-reinforced area is defined by the line of centers of the double-fluid grouting holes, single-fluid grouting holes are drilled in the cave to-be-reinforced area, and a grouting pipe is installed; and pressure grouting is conducted on the grouting pipe, firstly double-fluid grout made of cement, water and water glass is poured into the double-fluid grouting holes so that a wall for grouting of the cave to-be-reinforced area can be formed, then single-fluid grout is poured into the single-fluid grouting holes to conduct reinforcing, and grouting is completed when grouting pressure ofthe interiors of the single-fluid grouting holes reaches a design value.

The invention discloses a construction method of a water-rich loess tunnel capable of passing through a loess gulley. The water-rich loess tunnel comprises a tunnel entrance entering section, a gulleyshallow-buried tunnel section and a front side tunnel section, wherein the gulley shallow-buried tunnel section is connected between the tunnel entrance entering section and the front side tunnel section; the construction method comprises the following steps: 1, constructing the tunnel entrance entering section; 2, constructing the gulley shallow-buried tunnel section; and 3, constructing the front side tunnel section. The construction method is simple in step, reasonable in design, simple and convenient in construction and excellent in using effect; the reasonable look-ahead reinforcing method and the tunnel base reinforcing method are selected to reinforce the tunnel soil mass according to different stratums of the tunnel entrance entering section, the gulley shallow-buried tunnel section and the front side tunnel section, the excavation process of the water-rich large-cross-section loess tunnel can be effectively ensured to be safe and reliable, and the stability of the dug formedtunnel can be effectively improved.

The invention relates to an anti-overturning device for a single-pier bridge. The anti-overturning device is installed between a bridge girder and a pier stand column and comprises viscous dampers, ahinge support and chemical anchor bolts. The hinged support is anchored on the bridge girder and the bridge pier stand column, viscous dampers are installed at the two sides of the bridge girder and the two sides of the bridge pier stand column, and the bridge girder is connected with the pier stand column through the viscous dampers. By additionally arranging the viscous dampers between the bridge girder and the pier stand column, the bridge girder can be effectively prevented from overturning, and the overturning resistance of the single-pier bridge is improved. The anti-overturning device is simple in structure, is convenient to construct, and has the good economical efficiency.

The invention provides a freeze-thaw-environment-resistant fiber composite recycled concrete column which is prepared from the following raw materials in parts by weight: 1 part of cement, 0.53 part of water, 1.86 parts of sand, 1.72 parts of primary coarse aggregate, 1.72 parts of recycled coarse aggregate, and fiber 0-8 kg / m<3>. Concrete column. The recycled coarse aggregate is waste concrete, and the primary coarse aggregate is natural cobblestone. The fiber is composed of at least one of CFRP, BFRP, AFRP, GFRP and steel fiber, and is used as a building material or reinforcement material. The invention also provides a method for preparing the concrete column. The concrete column has the advantages of freeze-thaw environment resistance, beautiful appearance, environmental protection and energy saving, and is easy to prepare.

The invention belongs to the field of building structural construction, in particular to a temporary reinforcing method of circular pipe components. The temporary reinforcing method has the following specific construction steps that (1) according to the specifications of reinforced circular pipes, appropriate steel angles and steel angle fasteners matched with the steel angles are selected; (2) according to the lengths of the reinforced circular pipes, the lengths of the steel angles and the number of the steel angle fasteners are determined; (3) before the circular pipe components are stressed, two steel angles are symmetrically arranged on the two sides of each reinforced circular pipe and fixed through the corresponding steel angle fasteners; and (4) after structural construction unloading, the steel angle fasteners are loosened, steel angle reinforcing devices are dismantled, and reinforcing of the circular pipe components is completed. The temporary reinforcing method facilitates construction, and construction does not need machines such as a crane and can be achieved through manual work.

The invention relates to a loess relic efflorescence-proof reinforcing agent and a preparation and reinforcing method thereof. The method comprises the following steps: dissolving 5-25g of oxalate and 1-15ml of CB-I reinforcing agent prepared from phosphoric acid in every 1000ml of ethanol, and dissolving 15-150g of CB-II reingorcing agent prepared from barium hydroxide in every 2500ml of carbinol; and utilizing a dual reinforcing method of carrying out microprecipitation and adsorption on the losess relic by the CB-I reingorcing agent and the CB-II reingorcing agent, and utilizing a three-step dripping mode to achieve the reinforcing effect. By adopting the technical scheme of the invention, a loess relic efflorescence-proof reinforcing material and the reinforcing method which are suitable for dry, semi-dry and humid environment conditions of a semihumid area are obtained. The chemical raw materials of the invention are technical pure, and has the advantages of low cost, simple manufacturing process and reinforcing method, and easy operation, thereby having good market development prospect. After being processed by the loess relic efflorescence-proof reinforcing material of the invention according to the reinforcing method, the loess relic shows excellent reinforced effect.

The invention discloses a peaty soft soil stratum subway station construction technology. A main structure of a constructed subway station comprises base plates, side walls, top plates and middle plates distributed between the top plates and the base plates. Underground consecutive walls are arranged on outer sides of the two side walls. The base plates, the side walls, the middle plates and the top plates are all of a rebar concrete structure formed by pouring waterproof concrete. The subway station construction technology comprises the following steps: (1) underground consecutive wall construction, (2) foundation reinforcement, namely, three-shaft stirring piles are used for reinforcing the foundation of excavated foundation pits, (3) vacuum water falling, namely conducting vacuum well point water falling construction on the foundation pits needing excavating, (4) foundation pit excavation, namely, an open excavation method is used for conducting earthwork excavation on the foundation pits needing excavating with a plurality of excavating layers from top to bottom, (5) subway station main structure construction. The method is simple, convenient to realize, quick in construction speed, capable of being ensured in construction quality easily, and good in construction effect, and enables the subway station construction process of peaty soft soil stratum to be completed simply, quickly and with high quality.

The invention provides a composite reinforcing agent and a preparation method thereof, and a reinforcing method of aged paper. The composite reinforcing agent is prepared from raw materials comprising the following components in parts by weight: 0.5 to 2.5 parts of cationic starch, 0.5 to 2.5 parts of cationic guar gum, 50 to 2000 parts of a solvent, and 8 to 12 parts of a cosolvent. Compared with the prior art, the composite reinforcing agent provided by the invention has the advantages that during reinforcement protection on paper, not only the handwriting of the paper is hardly influenced, but also the mechanical property and the ageing resistance thereof can be improved. An experiment result shows that on the basis of little influence on the color and pH value of the paper treated by using the composite reinforcing agent provided by the invention, the mechanical property thereof is increased by about 45 percent; moreover, after ageing is accelerated in a wet-hot environment, the reinforcement effect can be maintained to be 99.5 percent or more, and the ageing resistance is better.

The invention relates to a module vibration resisting method of a gas turbine waste heat boiler. The method is characterized by sequentially conducting reinforcement processing on a reheating face tube panel and an overheating face tube panel along the smoke direction of the waste heat boiler by utilizing a modularization structure of the waste heat boiler. The method includes the following steps: 1) conducting reinforcement processing on the reheating face tube panel and 2) conducting reinforcement processing on the overheating face tube panel. The step 1) includes the following steps: 1 disassembling a second vibration-resistant support, a third vibration-resistant support and a fourth vibration-resistant support and disassembling vibration-resistant supports remaining in the reheating face of the second vibration-resistant support, the third vibration-resistant support and the fourth vibration-resistant support; 2 removing fin tubes on the reheating face; 3 enabling a front row of tube panel tube bundles and a back row of tube panel tube bundles on the reheating face to form a stable whole; and 4 enabling the whole tube panel of the reheating face to form a whole. The step 2) includes the following steps: 1 removing damaged fins of the first row of tube bundles and the second row of tube bundles on the overheating face; 2 fixing a clamping plate of the second row of tube bundles on the overheating face, 3 welding tube clamps of every 12 tubes of the tube panel tube bundles of an overheater in front and back connection mode, integrally welding the tube clamps with adjacent tube clamps to reduce shaking of fin tubes. The reinforcement method is simple, practical, convenient to assemble, less in investment and widely suitable for modularization vibration resistance of various 9F gas turbine waste heat boilers.

The invention relates to a method for reinforcing a river wall through gluten oyster shell leavening compacted bentonite, and belongs to the technical field of foundation treatment. Oyster shells are burnt firstly to obtain quick lime, the quick lime and a large amount of water are mixed and filtered, lime oil is obtained, the lime oil, gluten meal, waste newspaper and cane syrup are mixed and fermented to obtain paper reinforcement pulp with the great viscidity, the characteristics of plasticity and bondability of an admixture of bentonite and water or mud or fine sand are used, a reinforcing base material is formed, and is compounded with paper reinforcement pulp, the rich active group on the surface of the paper reinforcement pulp and hydroxide radical on the surface of the reinforcing base material are used for generating hydrogen bond suction and chemical bonding force, plasticity and bondability are further improved, and the effect of compacting a reinforcing layer is achieved. Under washing of heavy rainfall, the reinforced river wall is not prone to cracking, the obvious reinforcing effect is achieved, the large amount of cement is avoided, the oyster shells and the waste newspaper and the like serve as raw materials, the resources are recycled, cost is saved, and the reinforcing method is simple and easy.

The invention discloses a reinforcement device and method for a bent pressure rod. The reinforcement device comprises first U-shaped steel and second U-shaped steel; the first U-shaped steel comprisesa first flange, a first web and a second flange, the first flange is provided with first circular holes, and the second flange is provided with first slotted holes; the second U-shaped steel comprises a third flange, a second web and a fourth flange, the third flange is provided with second slotted holes, and the fourth flange is provided with second circular holes; and the first circular holes and the second slotted holes are fixed through single-sided bolts, and the first slotted holes and the second circular holes are fixed through single-sided bolts. The reinforcement method includes thefollowing steps of forming the first circular holes, the first slotted holes, the second slotted holes and the second circular holes respectively, wherein the flanges are parallel with the initial deflection direction of the bent pressure rod; performing overlap connection in a circular hole and slotted hole overlapping manner; and fixing the circular holes and the slotted holes through the single-sided bolts. By means of the reinforcement device and method, self-adaption to bent pressure rods with different deflections is achieved through the slotted holes in the flanges without changing thesize of the U-shaped steel, reinforcement can be achieved through the same U-shaped steel, and the adaptability of engineering application can be easily improved.

The invention discloses a construction method for a folding type structural slab post-cast strip joint formwork. The construction method includes the following steps that firstly, a structural slab forming formwork is erected, and specifically, the forming formwork for a constructed structural slab is erected; secondly, a bottom layer reinforcing mesh is bound; thirdly, a post-cast strip joint formwork is arranged, specifically, the post-cast strip joint formwork comprises a plurality of assembled formwork bodies, each assembled formwork body comprises a left lateral formwork body and a right lateral formwork body symmetrical with the left lateral formwork body, and each lateral formwork body comprises a foldable formwork body and a formwork connecting structure mounted on the foldable formwork body; fourthly, a surface layer reinforcing mesh is bound; fifthly, the post-cast strip joint formwork is erected; sixthly, concrete is poured, and specifically, the constructed structural slab is subjected to concrete pouring through the forming formwork and the post-cast strip joint formwork; and seventhly, the post-cast strip joint formwork is removed. The steps of the construction method are simple, the design is reasonable, construction is easy and convenient, the using effect is good, the construction process for the structural slab with a reserved post-cast strip can be completed easily, conveniently and rapidly with high quality, and the construction quality is easy to guarantee.

The invention relates to an external prestressing reinforcing structure and method for a T-shaped concrete beam. The structure comprises multiple vertical transverse partition plates arranged on the lower side of a T-shaped concrete beam flange side by side. Horizontal supporting cushion plates in pairs are arranged at the bottom of a T-shaped concrete beam web, and the supporting cushion plates in each pair are located between two adjacent transverse partition plates; in the transverse partition plates on the two sides of the supporting cushion plates, one end of a high-strength aluminum alloy rib is fixed to one transverse partition plate through an aluminum alloy bolt to form an anchoring end, and the other end of the high-strength aluminum alloy rib is fixed to the other transverse partition plate through a wedge-shaped strand tapered anchorage to form a tensioning end; and the middle portion of the high-strength aluminum alloy rib bypasses the lower sides of the supporting cushion plates and is in a horizontal state. By the adoption of the structure and method, the bearing capacity and durability of the T-shaped concrete beam can be improved while it is guaranteed that the bearing performance of the T-shaped concrete beam is not reduced, and a reinforcing effect is good; and meanwhile prestress can be effectively applied to an aluminum alloy through the formed anchoring end and the formed tensioning end.

The invention discloses a reinforcing structure and a reinforcing method of a spatial structure bending compression bar. The reinforcing structure of the spatial structure bending compression bar comprises a restraining component which is arranged on the peripheral side of the bending compression bar and has a rectangular cross section. The restraining component is formed by two unequal-angle steel pieces shorter than the bending compression bar in a butt joint splicing mode. Each unequal-angle steel piece comprise a long-limb plate and a short-limb plate which are perpendicularly arranged inan L shape. The two long-limb plates are oppositely arranged, the two short-limb plates are oppositely arranged, each long-limb plate corresponds to the corresponding short-limb plate and is fixedly welded, and the inner sides of the long-limb plates and the inner sides of the short-limb plates are in butt joint with the outer wall surface of the bending compression bar. By means of the reinforcing structure and the reinforcing method, the problems that the sizes of constraint parts are numerous and matching is difficult due to existence of initial bending of the compression bar are solved.

The invention provides a bridge reinforcing steel structure assembly, which belongs to the field of bridge reinforcing and comprises a first reinforcing plate, a second reinforcing plate and two adjusting assemblies. One end of the second reinforcing plate is hinged to the lower end of the first reinforcing plate; the supporting base is arranged between the first reinforcing plate and the second reinforcing plate, one end is fixedly connected with the first reinforcing plate, and sliding grooves are formed in the two sides respectively. The two adjusting assemblies are located on the two sides of the supporting base, and one ends of the two sliding blocks slide in the sliding grooves. The two ends of the spring are fixedly connected with the opposite sides of the two sliding blocks correspondingly. The lower ends of the first connecting rod and the second connecting rod are rotationally connected with the second reinforcing plate, and the upper ends are rotationally connected with the two sliding blocks; the lower ends of the two third connecting rods are rotationally connected with the upper ends of the first connecting rod and the second connecting rod correspondingly. The reinforcing assembly is simple in method and can be automatically attached to the inclined leg according to the angle change of the inclined leg, and the bearing capacity of the inclined-leg steel structure bridge is improved.

The invention discloses a friction energy dissipation sleeve reinforcing device and a use method thereof. The device comprises a first pipe piece and a second pipe piece. The first pipe piece comprises a first stiffening plate in the pipe length direction; the second pipe piece comprises second stiffening plates which are uniformly distributed in the length direction of the pipe and are fixedly connected; a friction piecet is arranged between the first stiffening plate and the second stiffening plates, and a first round hole, a second round hole and a first slotted hole are fixed. The method comprises the following steps that the first pipe piece and the second pipe piece with the length less than that of a pressing rod are selected; the first pipe piece and the second pipe piece are oppositely arranged, the first stiffening plate and the second stiffening plates are opposite, the first round hole and the first slotted hole are opposite, and the friction piece is clamped between the first stiffening plate and the second stiffening plates; fixing is performed through bolts; one end of the pressing rod is connected with the end of the first pipe piece through a first weld joint, andthe other end is connected with the end of the second piece piece through a second weld joint. Restraint is provided for buckling of the pressing rod, a friction type damper is formed and thus the bearing capacity of the pressing rod and the energy dissipation capacity of the structure can be improved.