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651results about How to "Simple and fast construction" patented technology

High-strength micro-expansive grouting material and its preparation method

The invention provides a high-strength micro-expansive grouting material and its preparation method. Raw materials of the high-strength micro-expansive grouting material comprise Portland cement having a compressive strength of above 42.5MPa, sulphoaluminate cement or aluminous cement having a compressive strength of above 42.5MPa, a calcium sulphoaluminate expanding agent, quartz sand or corundum or iron tailings, an organic silicon antifoaming agent, a polycarboxylate superplasticizer, calcium formate or lithium carbonate, sodium gluconate, and methyl cellulose ether or hydroxypropyl methyl cellulose ether or hydroxyethyl methyl cellulose ether. Compared with present cement-based grouting materials treating the sulphoaluminate cement and the aluminous cement as main cementing materials, the high-strength micro-expansive grouting material, which is obtained through treating the Portland cement as a main cementing material component, carrying out ultrafine crushing of the cementing material component via an ultrafine crushing technology, and processing, has the characteristics of high early-stage strength, excellent fluidity, increased long-term strength, and good durability; and compared with traditional epoxy mortars, the high-strength micro-expansive grouting material has the characteristics of micro-expansion, simple and fast construction, non-toxicity, and harmlessness.
Owner:BEIJING BUILDING MATERIALS ACADEMY OF SCI RES

Construction method for supporting deep foundation pit through grouting after pile arrangement and anchor cable mounting

The invention discloses a construction method for supporting a deep foundation pit through grouting after pile arrangement and anchor cable mounting. The construction method comprises the steps that firstly, pile arrangement supporting structure construction is performed, wherein a pile arrangement supporting structure comprises multiple slope protection piles which are arranged along the peripheral edge line of the constructed foundation pit from front to rear and a crown beam connected to the upper portions of the slope protection piles; secondly, foundation pit excavation is performed, wherein the constructed foundation pit is excavated from top to bottom; and thirdly, anchor cable supporting structure and waist beam construction is performed, wherein during excavation of the constructed foundation pit, the constructed foundation pit is excavated to the anchoring position of an anchor cable supporting structure, and the anchor cable supporting structure is constructed; and the anchor cable supporting structure comprises multiple prestress anchor cables, each prestress anchor cable comprises an anchor cable body, a primary grouting pipe and a secondary grouting pipe, and each anchor cable body comprises multiple steel strands. The method has the beneficial effects that the steps are simple, the design is reasonable, construction is easy and convenient, the use effect is good, the deep foundation pit supporting construction process can be completely easily, conveniently and quickly, the cost of the adopted prestress anchor cables is low, the anchoring force is high, and the deep foundation pit can be supported effectively.
Owner:SCEGC NO 6 CONSTR ENG GRP CO LTD

Environment-friendly inorganic exterior-wall heat-insulation thermal-insulation coating and preparation process thereof

The invention relates to the technical field of heat-insulation thermal-insulation coating formulas for building exterior-walls, and specifically relates to an environment-friendly inorganic exterior-wall heat-insulation thermal-insulation coating and a preparation process thereof. The coating comprises the following components: a functional filler, a modified polymer emulsion, other pigments, auxiliaries, and water, wherein the functional filler is a mixed bead filler formed by compounding, and the modified polymer emulsion is a compound of silica sol and polymer emulsion. The invention provides the environment-friendly inorganic exterior-wall heat-insulation thermal-insulation coating which is prepared by adding formulas such as hollow ceramic beads or hollow glass beads with different components and different grain sizes, modified polymer emulsion, and auxiliaries; the coating has better heat-insulation thermal-insulation performance, a lower heat conduction coefficient, excellent comprehensive performances, convenience in construction, and coating thickness of 0.5-1mm; the coating is aqueous and pollution-free, safe and environment-friendly, and suitable for large-scale popularization and application.
Owner:江苏仁通节能科技有限公司

Light steel factory post foundation suitable for sedimentation of filled-in ground and construction method

The invention discloses a light steel factory post foundation suitable for sedimentation of filled-in ground and a construction method. The post foundation comprises a connecting rebar, a post bottom plate, a steel base plate, a precast cushion block and an independent under-post foundation; wherein the post bottom plate, the steel base plate, the precast cushion block and the independent under-post foundation are arranged from top to bottom in sequence; the connecting rebar comprises a top screw rod rebar, a middle screw rod rebar and a bottom drift bolt screw rod rebar; when the filled-in ground sediments, the top screw rod rebar and the middle screw rod rebar can be dismantled; the post bottom plate is jacked and restored to an original design elevation by a jack through the steel base plate, and a gap between the post bottom plate and the independent under-post foundation is filled by the precast cushion block. The light steel factory post foundation is reasonable in structure, convenient to construct, safe and reliable; height of a post bottom can be freely adjusted according to the requirement; adverse effects on construction of the conventional light steel factory post foundation and normal use of a structure caused by foundation sedimentation can be effectively solved, and the light steel factory post foundation has a good economic benefit and a time benefit in engineering construction.
Owner:CHONGQING UNIV

Method for reinforcing and deviation correcting of building foundation through combined grouting

ActiveCN104047307ARapid and precise liftingExtended reaction timeFoundation repairChemical reactionSlurry
The invention discloses a method for reinforcing and deviation correcting of building foundation through combined grouting. According to the method, polyurethane grouting and cement grouting are combined organically, polyurethane grouting drill holes are formed in the area where the maximal sedimentation occurs of the building foundation, the polyurethane reaction raw material slurry is grouted into the drill holes, the chemical reaction expansion is generated, so that the area where the maximal sedimentation occurs of the building foundation can be reinforced and lifted, meanwhile, cement grouting drill holes are formed in the periphery of the polyurethane grouting drill holes in a certain density, the pre-existing pores, pre-existing gaps and gaps generated after the polyurethane grouting foundation is lifted in the reinforced foundation are filled and reinforced through the cement grouting method, and a cement-reinforced body is formed. The method has the advantages the reinforcing and lifting of the building foundation through the polyurethane grouting are quick and precise; the building foundation is evenly and comprehensively reinforced through the cement grouting; the construction process is simple, convenient and fast, and the cost is low.
Owner:SHANGHAI SHEN YUAN GEOTECHN +1

Construction waste recycling and reusing process

The invention discloses a construction waste recycling and reusing process, which comprises the following steps of: 1, collecting waste concrete, waste mortar and waste brick slag; 2, smashing and screening, namely smashing and screening the collected waste concrete, the collected waste mortar and the collected waste brick slag to obtain regenerative rough aggregates and regenerative fine aggregates; and 3, preparing foam concrete, namely firstly preparing cement slurry, namely uniformly stirring concrete, water, the regenerative rough aggregates and the regenerative fine aggregates to obtain the cement slurry, and secondly adding a foam dilution solution, namely adding the foam dilution solution formed by uniformly mixing a foaming agent and water into the cement slurry, and uniformly stirring to obtain the foam concrete. The steps of the process are simple; the investment cost is low; the process is simple, feasible and high in operability; the waste concrete, the waste mortar and the waste brick slag can be effectively reused; the economical benefit is outstanding; the produced foam concrete material is high in heat preservation performance; and the problems that the construction waste is abandoned and stacked randomly and occupies the land, the waste of resources is severe, and the environment pollution is severe are solved.
Owner:陕西建工集团有限公司

Preset nut type steel-reinforced concrete compound pier template fixing device and construction method thereof

ActiveCN101538939ASolve fixed puzzlesEnsure construction safetyForms/shuttering/falseworksCompound pierReinforced concrete
The invention discloses a preset nut type steel-reinforced concrete compound pier template fixing device and a construction method thereof. The fixing device mainly comprises a template, a nut, a screw rod, a PVC protecting pipe, an inner keel and an outer keel. The nut is welded on a steel column, the template surrounds the periphery of the steel column, the outer keel is arranged around the outer side of the template, the inner keel is arranged between the template and the outer keel, one end of the screw rod is connected with the nut by a thread, the PVC protecting pipe is sleeved on the screw rod, and the other end of the screw rod is fixed on the outer keel by a 3-shaped buckle. The invention has simple structure, low cost, and simple and convenient construction, solves the difficulty of fixing the steel-reinforced concrete compound pier template, is convenient for the field construction operation and lightens the workload and the labor intensity. The inner keel, the outer keel, the template and the screw rod can be repeatedly used so as to save the cost, ensure the construction safety of the template and improve the forming quality of the concrete column; meanwhile, the fixing device adopts common materials, thereby lowering the cost and being convenient for popularization and application.
Owner:JIANGSU HUAJIAN CONSTR

Inorganic composite flexible decorative coiled materials and producing method thereof

The invention belongs to the field of building, and discloses inorganic composite flexible decorative coiled materials. The thickness of the inorganic composite flexible decorative coiled materials is 2mm to 10mm, the inorganic composite flexible decorative coiled materials comprise an inorganic coiled material mortar layer, a decorative mortar layer is combined on the inorganic coiled material mortar layer, and reinforcing materials formed by alkali-resisting glass fiber gridding cloth or glass fiber roofing felts are arranged in the inorganic coiled material mortar layer or on the boundary of the inorganic coiled material mortar layer and the decorative mortar layer. The inorganic coiled material mortar layer is mainly formed by the following materials, by weight: 100 parts of portland cement with intensity no less than 42.5, 1.2 to 2.0 parts of cellulose, 350 to 450 parts of 50 to 100-mesh silica sand, 180 to 220 parts of coarse whiting, 1.8 to 2.2 parts of water reducing agent and 120 to 160 parts of 707 emulsion or cement-based elastic emulsion. The decorative mortar layer is mainly formed by the following materials, by weight: 150 parts of synthetic resin emulsion for maishi paint, 4 to 6 parts of coalescing agent, 8 to 12 parts of ethylene glycol, 1 to 2 parts of cellulose and 700 to 800 parts of natural color sand. The inorganic composite flexible decorative coiled materials are good in toughness, small in thickness, light in weight, good in application property, not prone to peeling off and good in weather fastness, and different decorative styles can be formed easily.
Owner:BEIJING SOLID BUILDING ENG

Portion waveshape steel web plate pre-stress steel-concrete continuous combined case beam

InactiveCN101255677AGood three-dimensional flexibilityImprove tensile propertiesBridge materialsBridge engineeringSheet steel
The present invention relates to a partial corrugated steel web prestressed steel-concrete continuous composite box-girder. The concrete roof plate is permanently connected with the steel box-girder through a connecting plate and a shear connector. In the steel box girder the steel diaphragm plates are installed respectively corresponding to each fulcrum. The whole steel box-girder is composed of a structural negative monument area segment and the structural positive moment area segment arranged at two ends. The concrete roof plate of the structural negative moment area segment is stretched with a longitudinal prestressed rib. A longitudinal stiffening rib is arranged in the steel baseboard. The web plates at two sides of the steel box-girder in the structural negative moment area are corrugated steel webs. The web plates of the steel box-girder in the structural positive moment area steel box-girder are plane steel web plate. The invention can overcome the problems of low efficiency of longitudinal pre-stress of negative moment area in the continuous composite box-girder and corrugated steel web PC composite box-girder, easily destabilization of the plane steel web plate or more arrangement of the longitudinal prestressed rib inside or outside the box-girder and complex construction and the like. The invention has broad applying prospect in the bridge engineering and long-span structure.
Owner:HUNAN UNIV

Assembled type butt joint of duplex type concrete-filled steel tube column and connection method

The invention discloses an assembled type butt joint of a duplex type concrete-filled steel tube column. The butt joint includes a first joint connector, a second joint connector, a first channel steel connector and a second channel steel connector, wherein the first joint connector and the second joint connector are each composed of two front-surface connecting plates, two side-surface connecting plates and connection panels, the two front-surface connecting plates and the two side-surface connecting plates surround the periphery of an inner steel pipe through four connection laths and are symmetrically welded to the periphery of the inner steel pipe, and after welding is completed, the end portion of one end of each connecting plate is welded to the corresponding connection panel to form the butt joint of the upper-layer column body and the lower-layer column body. Bolted connection is adopted, traditional butt weld connection is abandoned, and construction and installation are convenient to conduct; prepared holes are used for post-pouring, and concrete can be conveniently and rapidly poured in the splicing portion; splicing of the joint connectors and the column can be completed in advance in a factory, and the degree of industrialization is high.
Owner:CHANGAN UNIV

Continuous rigid frame bridge based on steel truss-concrete slab composite beam

The invention discloses a continuous rigid frame bridge based on a steel truss-concrete slab composite beam. The continuous rigid frame bridge comprises a bridge substructure and the steel truss-concrete slab composite beam supported by the bridge substructure. The steel truss-concrete slab composite beam comprises a steel truss and a concrete bridge deck which is laid over the steel truss. The steel truss comprises one or more steel truss units; each steel truss unit is an inverted-triangle truss girder, wherein the inverted-triangle truss girder is composed of two upper chords, a lower chord, a left line of diagonal web members and a right line of diagonal web members, each upper chord comprises a first horizontal steel plate and a plurality of first vertical perforated steel plates evenly laid on the first horizontal steel plate, an upper chord transverse connecting system connected between the two upper chords comprises a plurality of upper chord transverse connecting pieces, and each upper chord transverse connecting piece comprises a second horizontal steel plate and a plurality of second vertical perforated steel plates evenly laid on the second horizontal steel plate. The continuous rigid frame bridge is simple in structure, reasonable in design, convenient to construct, good in stress performance, good in using effect and capable of effectively solving various problems existing in an existing continuous rigid frame bridge.
Owner:CHANGAN UNIV

Novel high-temperature-resistant non-curing waterproof coating and preparation method thereof

The invention belongs to the technical field of building materials, and provides a novel high-temperature-resistant non-curing waterproof coating. The coating is composed of the following components in percentage by weight: 25-35% of asphalt, 15-30% of rubber oil, 10-20% of waste tire rubber powder, 5-10% of styrene-butadiene rubber, 1-3% of styrene-butadiene-styrene (SBS), 4-10% of tackifying resin, 10-20% of fly ash, 2-5% of a high-temperature modifier and 2-5% of a viscosity reducer, wherein the high-temperature modifier is a BL modifier or polyamide wax. The preparation method is carried out by adopting a three-section-type feeding method and comprises the following steps: adding asphalt and rubber oil, carrying out heating to 150 DEG C, then adding the SBS, the styrene-butadiene rubber, the tackifying resin and the viscosity reducer, carrying out heating to 180 DEG C, then adding the fly ash and a high-temperature modifier, mixing the components at 180 DEG C to form a uniform liquid, and carrying out cooling and discharging to obtain the novel high-temperature-resistant non-curing waterproof coating. The invention solves the problem that a non-curing rubber asphalt waterproofcoating is poor in heat resistance.
Owner:河南驼峰防水科技有限公司

Device and method for flexible connection between masonry filler wall and main body frame

The invention relates to a device for flexible connection between a masonry filler wall and a main body frame. The device consists of a connecting member A and a connecting member B, wherein the connecting member A is embedded in a frame column and a frame beam, and the connecting member B is connected with the connecting member A through a sliding groove and a sliding block. During the building of the filler wall, firstly, the connecting member A is arranged on a rod placement of the frame, an opening of the sliding groove of the connecting member A is enabled to be tightly attached to a formwork, and then, concrete is poured; the formwork is removed when the concrete reaches design strength, and the connecting member B is connected with the connecting member A. During the building of a wall body, a fiber grille is cut out and is tiled in mortar, and the two end parts of the fiber grille are turned over along the height direction of edge building blocks so as to be embedded into next layer; after the building of the wall body is completed, a flexible sealing material is filled in gaps between the wall body and the frame. The connection between the filler wall built by the device and the main body frame is firm, out-of-plane is stable, and the earthquake resistance is high; the frame column and the filler wall do not interact, so that the problem that a major structure is affected by the filler wall built settlement is solved; in a structural earthquake-resistant design, a structural natural vibration period reduction coefficient is not required to be introduced, and thus the design is facilitated.
Owner:SHENYANG JIANZHU UNIVERSITY

Prefabricated concrete main beam and secondary beam connecting structure and construction method thereof

The invention discloses a prefabricated concrete main beam and secondary beam connecting structure and a construction method thereof. The prefabricated concrete main beam and secondary beam connecting structure comprises a prefabricated main beam and a prefabricated secondary beam, wherein a post-cast section is arranged on the prefabricated main beam; load-bearing bars on the bottom of the prefabricated main beam can continuously penetrate in the post-cast section; main beam stirrups are reserved in the post-cast section of the prefabricated main beam; the prefabricated secondary beam extends into the post-cast section of the prefabricated main beam; longitudinal bars on the prefabricated secondary beam are directly anchored on the prefabricated main beam or are anchored on the prefabricated main beam through additional reinforcements; continuous load-bearing bars are paved in a laminating layer on the upper portion of the prefabricated main beam and penetrate in the upper portion of the prefabricated secondary beam; and the post-cast section is formed by a formwork in a pouring manner. Compared with the prior art, the prefabricated concrete main beam and secondary beam connecting structure has the advantages that a prefabricated main beam and prefabricated secondary beam connection mode is modified so as to facilitate hoisting and connection of prefabricated components, the connection performance of the prefabricated main beam and the prefabricated secondary beam is equal to the effect of a cast-in-place structure, joints are connected to one another firmly, horizontal sleeve grouting connection is not required, materials are saved, the manufacturing cost is reduced, and the prefabricated concrete main beam and secondary beam connecting structure is quick and easy to construct.
Owner:NANJING YANGTZE RIVER URBAN AGCHITECTURAL DESIGN

Road and bridge expansion joint structure

The invention discloses a road and bridge expansion joint structure. The road and bridge expansion joint structure comprises an inverted-T-shaped plate component with the bridge longitudinal cross section being in an inverted T shape. Two wing plates of the inverted-T-shaped plate component transversely extend into a base body of a bridge pavement layer. A web extends upwards to be flush with the upper surface of the bridge pavement layer. Each wing plate is sequentially provided with a cushion layer and a protection wear-resisting layer from bottom to top in a laying mode and is longitudinally connected with the bridge pavement layer. An expansion joint notch and the two sides of the expansion joint notch are filled with elastic layers to be sealed. The road and bridge expansion joint structure has the advantages of being convenient to construct, reasonable in design, high in efficiency, good in vehicle load bearing performance, good in elasticity, smooth and attractive in surface, and good in waterproofing, anti-aging, anti-fatigue, shock resistance and corrosion resistance. In accordance with the characteristics of an expansion joint, three materials of different components and matching ratios are adopted, layered pavement is conducted according to different stress conditions and states, good durability is achieved, construction is rapid and simple, and the expansion joint performance requirement can be well met.
Owner:孟献春

Reinforcing structure for rear opening in shear wall and construction method of reinforcing structure

The invention relates to a reinforcing structure for a rear opening in a shear wall and a construction method of the reinforcing structure. The reinforcing structure comprises an original wall, a floor slab and a structural steel frame for reinforcing, wherein the structural steel frame comprises steel angles and flat steel and covers the edge of the rear opening, and the steel angles and the flat steel are fixed at the rear opening through anchor bolts and high-strength plate bolts; and the steel angles are arranged on two sides of the wall, the vertical and horizontal junction position of the steel angles is welded and outwards extends along the opening, vertical legs are cut off from the extending part, the steel angles on two sides are connected through batten plates, the batten plates and the steel angles are in groove welding, the contact positions of the bottoms of the steel angles and the floor slab adopt flat groove welding through local cut steel angle lacing bars and the steel angles on two sides, and the flat steel is arranged on the floor slab on two sides of the wall. Cut-off reinforcing steel bars in the original wall are reinforced with plug welding matched with the structural steel frame after the ends of the reinforcing steel bars are reserved, anchoring steel angles are added between the bottom of the floor slab and the lower wall, two legs attached to the wall surface are connected by high-strength bolts and connected with the floor slab and the flat steel through the high-strength plate bolts.
Owner:倡创(上海)咨询管理事务所

Water-borne energy-saving heat insulation and preservation coating for petrochemical engineering oil tank and preparation method thereof

The invention belongs to the field of coatings and particularly relates to a heat insulation and preservation coating. The water-borne energy-saving heat insulation and preservation coating for a petrochemical engineering oil tank is prepared by, by weight, hollow ceramic or hollow glass beads 35-65 parts, modified polymer emulsion 40-80 parts, padding 15-35 parts, additive 3-9 parts and water 50-90 parts. The modified polymer emulsion is a compound of silica sol and a polymer emulsion. The water-borne energy-saving heat insulation and preservation coating adopts hollow glass beads or the hollow ceramic as aggregate, modified polymer resin serves as an adhesive, softened water serves as a medium, additives are added to produce the coating through physical and chemical mixed processing. The coating is white or grey white sticky cream in appearance and forms a smooth film after being dried. The coating has good adhesion strength when being used on clean and dry surfaces in most cases. The coating does not contain harmful organic volatile matter, is non-toxic and is water-borne. No harmless waste and gas is produced in production and usage.
Owner:江苏仁通节能科技有限公司

Reinforced concrete-steel structure hybrid gravity foundation for offshore wind power and construction method thereof

The invention discloses a reinforced concrete-steel structure hybrid gravity foundation for offshore wind power. The reinforced concrete-steel structure hybrid gravity foundation comprises a caisson base and an upper steel support structure, wherein the caisson base has a gravity type reinforced concrete cavity structure; the steel support structure is fixed on the caisson base; the top end of the steel support structure is provided with a foundation ring which is connected with a fan tower; the caisson base and / or the steel support structure is provided with an irrigation channel which is communicated to the cavity of the caisson base. The invention further discloses a construction method of the reinforced concrete-steel structure hybrid type gravity foundation for offshore wind power. Compared with an ordinary jacket and single pile foundation, the reinforced concrete-steel structure hybrid gravity foundation has the advantages that the advantages of a reinforced concrete structure and a steel structure are combined organically; the reinforced concrete cavity structure is taken as a foundation base, and the steel structure is taken as an upper support structure; a pile foundation is not required; the foundation is made on the land, is assembled integrally, and can be transported by means of semi-submersible barge or the own buoyance. The reinforced concrete-steel structure hybrid gravity foundation is easy and convenient for construction, is shorter in the construction period, is economical, and has a wide application prospect in an offshore wind power project.
Owner:广州华申建设工程管理有限公司
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