100results about How to "Reduce the amount of reinforcement" patented technology

The invention relates to a novel method for enclosing a deep foundation pit and a slope protection project, such as a multi-storey basement and a subway. A rotary multiaxial borehole pouring concrete occluding pile wall is combined with an internal supporting system or anchor rod to form an integral enclosing structure. The slope protection project can be enclosed by an cantilever pile wall without an internal supporting system and anchor rods inside. An enclosure wall adopting multiaxial borehole pouring concrete occluding piles can be constructed along the foundation pit enclosing axis; because the planes of the stressed multiaxial borehole pouring concrete occluding piles are rotated by 90 DEG at a fixed position, the long edges of the cross sections of the multiaxial borehole pouring concrete occluding piles are perpendicular to the foundation pit enclosing axis, so that the lateral resistant strength and the rigidity of the enclosure wall are improved, and the cost of the project is lowered. Compared with method of using the underground continuous wall for enclosing, the method is easy and rapid to implement with simple construction machines and the enclosure wall with strong rigidity, low manufacturing cost and the like. Calculation shows that the rigidity of the enclosure wall adopting conventional reinforcing steel bars can be improved by about six times, and the resistance to bending can be improved by about 2 times, and the amount of reinforcing steel bars used and the comprehensive manufacturing cost are all reduced by about half.

A construction method for controlling the anti-slide pile and anti-landslide of a vertical prestressed anchor line, and the prior anti-slide pile is internally provided with the vertical prestressed anchor line, the construction of which is carried out according to the following steps: a vertical anti-slide pile hole is dug on the coast and the hole is dug into the deep of a stone head, and the pile hole is internally pre-buried with a steel tube or a PVC tube; a prestressed anchor eye is drilled downwards from the bottom of the pile hole; the anchor eye has the prestressed anchor line inside and carries out cement mortar perfusion; a steel reinforcement cage is put into the pile hole, and the concrete pouring of an anti-slide pile body is carried out; the prestressed anchor line is tensioned and the free perfusion above the sloping surface of the anti-slide pile is carried out; when the concrete initially coagulates, the prestressed anchor line is locked in an anti-tension way. The invention makes use of the advantages of the technology of prestressed anchorage and the structure of the anti-slide pile, thereby solving the problems of too long embedding and fixing section, overlarge cross section, poor antidumping performance and higher investment, etc. of the anti-slide pile of the prior large coast.

The invention provides a post-tensioned prestressing underground diaphragm wall. A fixed end anchor plate of a fixed end anchor tool of the underground diaphragm wall is provided with a taper hole and matched with a fixed end clamping piece. A prestressing steel bar is anchored through wedge caulking of the taper hole. A fixed end anchor plate lower stress member is jointly formed by a fixed end anchor backing plate and a fixed end spiral bar. A tension end anchor tool comprises a tension end anchor plate, a tension end anchor backing plate, a tension end clamping piece and a tension end spiral bar. The prestressing steel bar penetrates through a corrugated pipe to be laid and fixed to a steel bar cage, and then the two ends of the prestressing steel bar are fixed to the fixed end anchor tool and the tension end anchor tool respectively, the periphery of the steel bar cage and the periphery of the corrugated pipe are filled with concrete to form the post-tensioned prestressing underground diaphragm wall. Meanwhile, the invention provides a construction method of the post-tensioned prestressing underground diaphragm wall. The post-tensioned prestressing underground diaphragm wall and the construction method of the post-tensioned prestressing underground diaphragm wall have the advantages that the section of the post-tensioned prestressing underground diaphragm wall is reduced by 15 %, the antiknock performance is increased by 20 %, the steel bars are reduced by 30 %, the consumption of concrete is reduced by 15 %, and the post-tensioned prestressing underground diaphragm wall conforms to the development trend of the modern building structure.

The invention discloses a method of underground structure against floating, which is characterized by the following: 1)adopting the following methods; a)arranging first drained hole (7)on lower of underground structure outside wall (5); b)arranging second drained hole (8)on underground structure bottom plate (3); c)arranging the first drained hole (7)on the lower of the underground structure outside wall (5); arranging the second drained hole on the underground structure bottom plate (3); 2)arranging drained tank (2)on the inner of the underground structure exterior wall; communicating with collecting well (1)in the underground structure; 3)discharging the water in the collecting well out of the underground structure; arranging third drained hole (9)on the wall of the collecting well (1); proceeding pressure poured cement paste under the underground structure bottom plate (3); change-filling backfill soil (6)of the underground structure outside wall (5)in the zone with big creep quantity. This invention possesses the advantages of simple and firm.

The invention discloses a non-uniform reinforcing bar prefabricated support pile. The non-uniform reinforcing bar prefabricated support pile comprises a concrete pile body and a reinforcing bar cage arranged in the concrete along the axial direction of the pile body, wherein the reinforcing bar cage comprises a plurality of main steel reinforcing bars which are arranged in an axial parallel manner and are parallel to the axis of the pile body; the quantity of reinforcing bars on at least one side of the non-uniform reinforcing bar prefabricated support pile is greater than that of reinforcing bars on other sides of the non-uniform reinforcing bar prefabricated support pile; and the center of the non-uniform reinforcing bar prefabricated support pile is eccentric to the center of a pile body through hole. According to the non-uniform reinforcing bar prefabricated support pile disclosed by the invention, under the condition that the average reinforcement ratio of the section remains the same, the bent bearing capacity of the section can be improved; and the consumption of the reinforcing bars can be reduced when the bent bearing capacity of the section is same. The invention further discloses a method and a die for producing the non-uniform reinforcing bar prefabricated support pile.

The invention relates to a novel controlled swing frame system with self-resetting energy-dissipating supports, which belongs to the field of anti-seismic structural systems. It is mainly composed of frame columns, frame beams, self-resetting energy-dissipating supports, controlled beam-column nodes, controlled column foot nodes and foundations. The main controlled frame structure is subjected to vertical loads. When the structural system is subjected to an earthquake, the self-resetting energy-dissipating supports dissipate the seismic energy and provide lateral stiffness and restoring force to protect the main controlled frame structure from damage.

The invention discloses a reinforced structure connected by steel angles and method for an all-fabricated external attached frame. The structure comprises a to-be-reinforced original frame structure and an external attached frame structure, the external attached frame structure comprises prefabricated beams and prefabricated columns, notches are formed in the ends of the prefabricated beams, and hidden brackets extend out of the two sides of joint core areas of the prefabricated columns; the ends, the hidden brackets and the joint core areas of the prefabricated beams are all partially weakened, and steel plates are embedded in the weakened areas; the ends of the prefabricated columns are weakened partially, and steel sleeves are embedded in the ends of the prefabricated columns; and three-side steel angles are arranged at the corners of connected joints of the prefabricated beams and the prefabricated columns, the prefabricated beams and the prefabricated columns are connected with the beams and the columns of the original frame structure through the steel angles, and the prefabricated columns at the lower ends are connected with the prefabricated columns at the upper ends through the steel sleeves and pull bolts. The external attached frame structure not only contributes to the anti-seismic capacity of the whole reinforced structure through the anti-seismic bearing capacity and the energy consumption capacity, but also can improve the stress state and deformation mode of the original structure, so that the structure forms a damage yield mechanism, and the anti-seismic capacity of the original structure is fully utilized.

The invention discloses a fabricated light-weight energy consumption wall component of a shear wall. The wall component comprises a reinforced concrete wallboard. Holes are arranged in the reinforced concrete wallboard, energy consumption parts are fixed in the holes and comprise hole pre-burying boards, connecting plates and yielding energy consumption steel plates, the hole pre-burying boards are pre-buried in the reinforced concrete wallboard, the connecting plates are vertically and medially connected to inner sides of the hole pre-burying boards, and the top and bottom of each yielding energy consumption steel plate are connected with the corresponding connecting plate. According to the wall component, the holes are arranged, so the weight of the component is lightened, earthquake force borne by the wall is reduced, the component can be conveniently transported, transportation cost is reduced, meanwhile hoisting pressure in the construction process is relieved, construction safety is guaranteed, and construction efficiency is improved; the steel plate shear wall type energy consumption parts are arranged in the holes, shear deformation of hole positions occurs under the action of shear force, energy consumption of the steel plates is achieved through buckling, damage to the concrete wallboard can be reduced, and safety of the shear wall under the earthquake action is effectively guaranteed.

The invention relates to the technical field of monorail traffic rails, in particular to a straddle type monorail underground section rail wall structure and a construction method thereof. The structure comprises an upper prefabricated wall, a lower cast-in-situ wall and a foundation structure, wherein the upper prefabricated wall is a prefabricated structure, and internal reinforcements downwards extend out ofthe lower surface of the prefabricated structure; and the lower cast-in-situ wall is a cast-in-situ structure, comprises the internal reinforcements of the upper prefabricated wall, extends into the foundation structure, and forms an integrated cast structure with the foundation structure. No buttresses need to be arranged at two sides of the structure; after the buttresses are omitted, the buttress occupation space under the traditional rail beam condition is omitted in the art; and the tunnel end surface is decreased.

The invention relates to a damping method with low cost and energy consumption, relative device and method, wherein the invention uses X-shape steel bar concrete rod as support element; uses steel plate clamp rubber sheet as friction energy consumer; connects four ends of steel bar concrete rod to the beam nodes of building frame; in said energy consumer, functions some fixing force on the steel plate of clamp rubber sheet, to generate stable friction between the rubber sheet and steel plate as the starting force of energy consumer that absorbs output kinetic energy; and adjusts the fixing force to adjust the starting force. The invention has low cost, high appearance, simple production and easy operation. Compared with traditional structure, the concrete and steel bar consumptions are reduced most.

The method includes following steps: (1) prefabricating big and thin wall pipe piles; (2) according to designed reinforcing requirement, punching or pressing the said prefabricated pipe piles into base of foundation in soft clay by using construction machinery; (3) setting mattress layer on top of pipe piles to assort with distortion and stress of pile ground. Advantages are convenient construction, low cost, fast, adjusting distortion of pile ground so as to ensure piling quality and suit reinforcing base of foundation in soft clay.

The invention relates to a steel pipe reactive powder concrete column-flat beam-shear wall structure system, which comprises steel pipe concrete columns, reinforcing steel bar concrete beams and reinforcing steel bar concrete shear walls, wherein each steel pipe concrete column is a steel pipe reactive powder concrete column formed by pouring reactive powder concrete, and each reinforcing steel bar concrete beam is a flat beam, namely the width of each reinforcing steel bar concrete beam is larger than or equal to the height of the same. Since the compression strength of the reactive powder concrete (RPC) is 4-10 times of that of common concrete, the RPC and steel pipes are combined to form the steel pipe RPC columns, the section size of each column is greatly reduced, and the usable area of a building is increased. Additionally, the structure system has the advantages of a flat beam structure, such as capability of lowering story height, avoiding pipelines to penetrate through the beams and the like, thereby having extremely good comprehensive economic benefits and being suitable for large-scale popularization and application.

The invention provides a hinging joint structure of a large-span prestressed concrete framed girder. The hinging joint structure comprises a framed girder (1) and a framed column (2) which are integrally connected to form a prestressed concrete frame structure. The hinging joint structure is characterized in that an inner side isolating layer (3) and an outer side isolating layer (4) are respectively arranged at the inner side and the outer side of a plane in which the bottom surface of the framed girder (1) is intersected with the top surface of the framed column (2); the framed girder (1) and the framed column (2) are connected through a reinforced concrete core column (5); a reinforced concrete girder pad (6) is arranged at one inner side of the framed girder (1), at the inner side plate isolating layer (3). According to the hinging joint structure, a side column of the large-span prestressed concrete frame of a roof is structured into a single hinging form, thus the bending moment transmitted by the large-span prestressed concrete framed girder can be released, the framed column at the side can be kept in a small-eccentric pressing state, and as a result, the quantity of reinforcement and the section dimension can be reduced, the bearing performance of the frame structure can be improved, and the large-space design requirement of a building is met.

The invention relates to a reinforcement lightweight aggregate concrete flat beam structure which comprises a column, a beam and a plate, wherein the beam is a flat beam made of a reinforcing steel bar and lightweight aggregate concrete, the width of the flat beam is more than or equal to the height; and the column is a reinforcement lightweight aggregate concrete column. The reinforcement lightweight aggregate concrete flat beam structure provided by the invention also has better properties of light weight, energy saving, environment friendliness, good durability and the like of the lightweight aggregate concrete under the condition of the advantages of reducing floor height, avoiding pipeline beam crossing and the like, greatly reduces self gravity of the whole building structure and improves earthquake resistant behaviour of the structure while ensuring bearing capacity, and has remarkable economic and social benefits.

The invention discloses a surge shaft construction method combining impedance with overflow, which includes that the height of a surge shaft body is determined based on reservoir water level and subjected to be higher than exceptional flood level, the inner diameter D of the shaft body is determined based on stable section area calculated by Thoma criterion, and the thickness of the shaft body wall is determined based on the meeting of concrete anti-crack requirements and axis force bearing requirements; the mouth edge at the top of the surge shaft is made into an arc-shaped overflow weir; an annular stilling pool is constructed around the surge shaft body, the width of the stilling pool is determined according to the nappe length Ld of falling water during the overflow of the surge shaft, the altitude of the stilling pool bottom is the altitude of complete bedrock, and lining protection is performed according to the depth of water in the stilling pool; a sluiceway communicated with the stilling pool is constructed on one side of the stilling pool, and the bottom of the stilling pool is excavated to the bedrock surface; a connecting pipe communicated with a water drawing dynamoelectric tunnel is excavated perpendicularly downwards at the bottom of the surge shaft, and consolidation grouting is performed on the periphery; and the diameter of the connecting pipe is determined based on the requirement of an impedance hole. The surge shaft construction method has the advantages that the structure is simple and compact, the project amount is small, and the investment is saved.

The invention relates to a method for reinforcing polyester concrete and polyester concrete member provided with reinforcing material. The method for reinforcing polyester concrete includes that concrete combined material and resin adhesive as well as additive and filler are mixed into concrete mixture by ratio, and non metal structure frame or non metal reinforced net is adopted to be laid in the interior of concrete member when utilizing the mixture to process the concrete member. The polyester concrete member provided with reinforcing material is namely the concrete member made by adopting the method, and the member is in flat plate shape, or in tubular shape or in GONG (a Chinese character) shape. The invention adopts glass reinforcing rib or carbon fiber reinforcing rib to reinforce polyester concrete, and the obtained member has the following advantages: strength is high, hardness is four times higher than that of common concrete, toughness is higher than that of common steel bar, weight is light, and the member is anticorrosive, besides, glass fiber reinforced plastics is not conductive, has high safety, is resistant to water leaching and is adiabatic.

The invention discloses a combined beam of engineered wood, profiled steel sheet and light-weight aggregate concrete and a production and installation method of the combined beam. The combined beam comprises an engineered wood beam, a profiled steel sheet, a light-weight aggregate concrete wing plate, a transverse steel bar and longitudinal steel bars. The production and installation method comprises the following steps: manufacturing the engineered wood beam; pre-drilling holes in a marked position of the top of the engineered wood beam by using a drill bit of a drilling machine; paving the profiled steel sheet, and then penetrating connecting pieces through the profiled steel sheet by using an electric wrench to drive into pre-drilled holes in the top of the engineered wood beam; manufacturing the light-weight aggregate concrete wing plate; and performing concrete curing, and disassembling end plates or baffle plates at the ends of the profiled steel sheet until light-weight aggregate concrete achieves design ultimate compressive strength. According to the combined beam, the engineered wood beam is combined with the profiled steel sheet and the light-weight aggregate concrete wing plate, the manufacturing cost of the combined beam is reduced, and the rigidity and bearing capacity of the combined beam are improved, so that engineered wood and concrete make full use of respective advantages, and the tensile property of the engineered wood and the compressive property of the concrete are improved.

The invention discloses a supporting device for arched steel among beam columns. The supporting device can effectively control the internal force of a girder of an underground garage and comprises two circular arc steel tubes, framework columns and a girder, wherein one ends of the two circular arc steel tubes are respectively hinged with the framework columns on two sides; and the other ends of the two circular arc steel tubes are hinged with the lower part of a middle point of the girder to form two hinged circular arches. According to the supporting device disclosed by the invention, the internal force of the girder can be effectively adjusted and reduced, and the section size and the reinforcement quantity of the beams are greatly reduced, so as to achieve the aim of reducing the structure cost.

The invention relates to a rubber reservoir. The tank comprises a dam, a plurality of rubber liners and a bottom drainage system. The dam surrounds the reservoir. The rubber liners are respectively laid on inner surface of the reservoir. The bottom drainage system is arranged at the bottom of the reservoir, and comprises a plurality of sump pits, a filter layer and an exhaust system; the sump pits are arranged circlewise around the reservoir respectively. The filter layer is arranged at the bottom of the rubber liners and provided with a great amount of porous filter pipes which are classified into trunk pipes and branch pipes, two ends of the trunk pipes respectively extend to the sump pits. The exhaust system is arranged between the dam and the rubber liners around the reservoir, and conducts the filter layer and the atmosphere. The rubber reservoir has the following advantages and positive effects: 1. the rubber reservoir structure can effectively reduce construction cost; 2. a rubber reservoir structural system is easy for maintenance and management and convenient for quick emergency repair; and 3. the rubber reservoir is characterized by attractive appearance, simple construction and short construction period.