59results about How to "Meet the construction" patented technology

The invention provides a cement-based composite material used for a 3D printing technology as well as a preparation method and application thereof. The cement-based composite material is prepared from the following raw materials based on the total weight of the composite material: 33%-40% of cement, 0%-8% of inorganic powder, 32%-38% of tailing machine-made sand, 2.5%-3% of a high-molecular polymer, 0.1%-0.5% of a water reducing agent and 16.7%-20% of mixing water; a composite thickening time control agent, a thixotropic agent, a volume stabilizer and the like are added into a mixture to prepare an inorganic composite material; and then the inorganic composite material can be directly pumped into a 3D printer for building to be applied to construction. The cement-based composite material is an inorganic material and the materials are easily available; a lot of industrial waste materials can be used; therefore, the cement-based composite material is low in cost, energy-saving and environment-friendly; the condensation time can be flexibly controlled, and the material has super early strength, good caking property and strong stability; the requirements of 3D printing construction continuity of the building and the building strength are met so that the house building has good global stability and use safety; and the application and popularization of 3D printing technology can be greatly promoted.

The invention relates to a multifunctional scrapping type single-component thermal insulation coating, a multifunctional scrapping type bi-component thermal insulation coating and preparing methods of the multifunctional scrapping type single-component thermal insulation coating and the multifunctional scrapping type bi-component thermal insulation coating. The multifunctional scrapping type single-component thermal insulation coating is formed by main paint. The main paint is prepared from, by weight, 2-3% of anti-freezing agent, 1-1.5% of dispersing agent, 1-2% of wetting agent, 0.15-0.2% of pH regulator, 0.3-0.6% of defoaming agent, 30-35% of emulsion, 25-35% of thermal insulation material, 0.4-0.8% of lignocellulose, 0.2-0.5% of mildew preventive, 0.3-0.6% of antibacterial agent, 0.15-0.3% of preservative and 1-3% of film-forming additive, the balance being water. The multifunctional scrapping type bi-component thermal insulation coating is formed by mixing main paint and white cement according to the weight ratio of 8-12:1. The multifunctional scrapping type single-component thermal insulation coating and the multifunctional scrapping type bi-component thermal insulation coating which are prepared with the methods are extremely low in heat conductivity coefficient, high in solar emissivity, good in thermal insulation function, free of cracking in impasto and capable of bringing a strong sense of decoration.

The invention discloses a construction conversion technology of double side walls of single-hole large section tunnels. The method comprises following steps: 1. a left middle partition wall of a double-side-wall tunnel moves to the left and a temporary invert gradually moves downward to be respectively coincident with a middle partition wall and a temporary invert of CRD; 2. excavation and supportare carried out for the upper steps and the lower steps of drift heading at two sides of the two side walls and the upper step in the middle, and a middle lower step core soil is reserved; 3. small section step method of excavation and support for the upper step and the lower step is carried out; 4. excavation and support are carried out for the upper step at two sides of the middle section CRD and the lower step at the right side; 5. excavation and support are carried out for the lower step at the middle of the double side walls and for the lower step at right side of the CRD. The inventionuses the method of double-side wall drift heading and combines the moving of the partition wall and the reserved core soil for construction. The construction safety is guaranteed; the cost is reduced;the construction progress is accelerated; the construction scheme is flexible; surrounding rock deformation is rarely developed and strict deformation requirements for project construction can be met.

The invention discloses a tower crane foundation formed by using external walls of a basement and support piles of a foundation pit. The tower crane foundation comprises a tower crane foundation raft, wherein one side of the tower crane foundation raft is erected on the external walls of the basement, and external wall embedded bars of the basement are arranged between the tower crane foundation raft and the external walls of the basement; upper parts of the external wall embedded bars of the basement are arched into the tower crane foundation raft, and lower parts of the external wall embedded bars of the basement are embedded into the external walls of the basement; the other side of the tower crane foundation raft is erected on top beams of the support piles at the side slope of the foundation pit through a reinforced concrete wall; the reinforced concrete wall is internally provided with top beam embedded bars; moreover, upper parts of the top beam embedded bars are anchored into the tower crane foundation raft and lower parts of the top beam embedded bars are embedded into the top beams of the supporting piles. The tower crane foundation is used for successfully solving a difficulty that a tower crane cannot be directly arranged in the deep foundation pit of the foundation in a foundation construction stage; and the tower crane foundation is quite applicable to a large project which has higher requirements on side slope load of the foundation pit, is smaller in site and has the supporting piles and the external walls of the basement.

The invention discloses a safe crush-resistance assembly-type steel-structure elevator well. The elevator well comprises a frame column, a floor and an elevator well body, wherein the frame column is connected to the floor through an embedded part, and the frame column and a top board are directly welded to a top beam through an end sealing plate; the elevator well body is internally provided with an elevator girder and a frame girder, the elevator girder is provided with a first ring beam according to the height of an elevator door, and one side of the elevator girder, where the elevator door is not arranged, is provided with a second ring beam; the well wall of the elevator well body is provided with a light-steel keel plasterboard. According to the safe crush-resistance assembly-type steel-structure elevator well, by using an assembly-type steel structure to replace original concrete cast-in-place constructional columns and the ring beams and adding a brick well wall, a close well is formed, so that the construction is greatly accelerated, and the workload of staff is reduced; since the elevator girder is provided with the first ring beam according to the height of the elevator door and the side of the elevator girder, where the elevator door is not arranged, is provided with the second ring beam, the structure of the elevator well body is optimized; by arranging the plasterboard on the well wall, an effect of a partition wall is taken, and not only can a sealing effect be taken, but the properties of wind resistance and crush resistance can be improved.

The present invention discloses an ultra-deep and extra-thick dense sand stratum prestressed pipe pile long spiral lead hole construction method. The method comprises the following steps of: S1: siteformation and drill stem equipping: performing leveling and compaction for a site prior to place taking, or bedding a steel plate to facilitate place taking of a pile machine, and regulating equippingof the corresponding quantity of drill stems according to the depth of the lead holes to ensure the lead hole operation flow construction, wherein two lead hole drills are arranged on the site; and S2: location, paying-off and place taking of the pile machine: employing a total station to perform laying-off for preset lead hole stake positions, taking a drill machine in place to complete correction of the vertical degree of the drill stem and the centering of the center of the drill, and after location, putting down a support oil cylinder at the lower portion of a front-end mast and two support oil cylinders at the tail portion of the machine body of the drill machine. The ultra-deep and extra-thick dense sand stratum prestressed pipe pile long spiral lead hole construction method can extend the drill stem at will through connection according to pore-forming demands by employing a design of the hexagonal joint of the drill stem, can effectively ensure the reliable connection of the drill stem by only using a dual-way fixed plug pin after the drill stem is inserted when being connected and can meet the construction of an overlength pile hole.

The invention discloses a safe and stable suspension bridge and a construction technology thereof. The construction technology specifically includes the following steps that 1, firstly, the whole suspension bridge is divided into a steel arch foot bearing platform, a steel mixing joint section, a pure steel structure section, a cross beam section and a tower crown decoration section according tothe different structure composition; 2, embedded parts are set in a designated position, and pouring is conducted on the embedded parts to prepare the steel arch foot bearing platform; 3, the steel mixing joint section is constructed on the steel arch foot bearing platform; 4, after the steel mixing joint section is constructed, the pure steel structure section is constructed; 5, the cross beam section is constructed on the pure steel structure section, and fixation is then conducted; 6, finally, the tower crown decoration section is built and fixed on the upper portion of the cross beam section. On the basis that the construction quality is guaranteed, the construction technology of the bridge is optimized, the whole construction process is relatively simple, the whole construction speedis increased and the construction period is shortened.

The invention discloses an energy-storage self-luminous epoxy resin mixture for roads as well as a preparation method and application thereof. The energy-storage self-luminous epoxy resin mixture comprises the following components: coarse aggregate, fine aggregate, epoxy resin, a toughening agent, a curing agent and fluorescent powder, wherein the nominal particle size of the coarse aggregate is greater than 2.36 mm, the nominal particle size of the fine aggregate is 0.15-2.36 mm, and the nominal particle size of the fluorescent powder is less than 0.15 mm; wherein the epoxy resin accounts for6.0%-10.0% of the total mass of the coarse aggregate and the fine aggregate, the flexibilizer accounts for 0.4%-1.0% of the total mass of the coarse aggregate and the fine aggregate, the curing agentaccounts for 1.0%-2.5% of the total mass of the coarse aggregate and the fine aggregate, and the fluorescent powder accounts for 5.0%-10.0% of the total mass of the coarse aggregate and the fine aggregate. The advantages of the fluorescent powder are achieved by applying the colorless and transparent epoxy resin, so that the epoxy resin mixture is good in light transmission and ideal in luminouseffect, and the proportion of the epoxy resin can meet the requirement of pavement performance and has a protection effect on the fluorescent powder; the fluorescent powder with the nominal particle size smaller than 0.15 mm is adopted for replacing fine aggregate with the particle size smaller than 0.15 mm, so that the mechanical property of the pavement structure is not affected, and the beneficial effects of energy storage and light emitting are achieved.

The invention provides a large-span steel arch frame. The large-span steel arch frame is mainly composed of arch foot segments, standard segments, adjusting segments, closing segments and closing devices in an assembled mode, except the closing devices, lower chords of the adjacent segments are in hinged connection through penetrating pins, and upper chords of the adjacent segments are in opposite-pulling connection through bolts on the multiple side faces of chord members, so that the arch frame is formed; and wedge blocks are arranged between the transverse end faces of the upper chords of the adjacent segments, and the wedge blocks are axially and radially limited between the transverse end faces of the adjacent segments. The large-span steel arch frame is adjustable in rise span ratio,adjustable in span and especially suitable for construction of a main arch ring of a cast-in-place reinforced concrete arch bridge with the span being greater than 150 meters; and the rise span ratioand the span of the large-span steel arch frame are adjusted ingeniously, the force transfer effect is good, stability is good, and the force transfer effect is quite excellent.

The invention provides C40-grade steel slag sand self-compacting concrete, wherein the water-binder ratio is controlled between 0.3 and 0.7; the C40-grade steel slag sand self-compacting concrete is prepared from the following components in parts by weight: 2-10 parts of steel slag sand, 2-10 parts of glass beads, 2-10 parts of cement, 7-10 parts of natural coarse aggregates, 2-6 parts of recycled coarse aggregates, 2-10 parts of sand, 0.5-1.1 parts of coal ash and 2-10 parts of water. The obtained self-compacting concrete has good mobility, gap passing ability and segregation resistance, and meets the strength requirements. The production cost of the concrete is reduced while construction is facilitated, and the preparation method is simple and suitable for industrial production.

The invention discloses a construction method of a shallow-buried tunnel in a loess gully. The construction method comprises the following steps: 1, grouting a sleeve valve pipe for advancing reinforcement: carrying out sleeve valve pipe grouting for reinforcement on a stratum in the construction area of the constructed shallow-buried tunnel; 2, carrying out tunnel excavation and preliminary bracing; and 3, constructing a second lining. The construction method is simple in step, reasonable in design, simple and convenient in construction and excellent in using effect; the sleeve valve pipe isadopted and a plurality of rows of grouting holes are adopted to grout the reinforced stratum for reinforcement; the range of the reinforced stratum is specifically limited; both the tunnel hole bodyand the tunnel base can be reinforced, and the reinforcement effect is reliable; the shallow-buried tunnel construction method is particularly suitable for advancing reinforcement and excavation construction of the shallow-buried tunnel section which is positioned in a loess gully and is adjacent to an earth and stone interface, and the earth's surface of the shallow-buried tunnel is a silting-upland layer. The construction method can effectively ensure safety and reliability of the excavation process of the shallow-buried tunnel in the loess gully, can effectively improve the stability of the excavated tunnel hole and can effectively improve the bearing force of the tunnel base.

The invention relates to a high-strength epoxy sealing adhesive for watertight connectors and a preparation method thereof, the adhesive is composed of a component A and a component B, and the mass ratio of the component A to the component B is (2.5-3.5):1; the component A is prepared from the following raw materials in parts by weight: 70-80 parts of epoxy resin, 15-25 parts of reinforcing filler, 0.1-0.5 part of coloring filler, 0-2 parts of a silane coupling agent, 0.5-1 part of a dispersing aid, 0.5-1 part of a defoaming agent and 0.5-1 part of a thixotropic agent; and the component B is apolyimide reinforced amine curing agent. The excellent mechanical property and excellent connecting property of a polyimide structure are utilized, the polyimide structure is compounded with epoxy resin, and when the polyimide structure is applied to a watertight connector, a high-strength epoxy sealing adhesive material suitable for the marine environment with the water depth larger than 2,000 mand the environment with the pressure larger than 20 MPa is expected to be obtained.

The invention relates to the technical field of bridge construction, in particular to an arch rib construction method which comprises the following steps that a support is erected on a main beam, a first half arch and a second half arch are subjected to low-position assembly on the support to form a half arch, and the near-shore ends of the two half arches are hinged to arch feet at the two ends of the main beam through temporary rotating hinge devices; the first half arch and the second half arch are lifted to the set height at the far shore end, and a closure gap is formed; a closure section is lifted to the closure gap from the main beam; and the first half arch and the second half arch are fixedly connected with the arch feet to form arch ribs. The arch ribs are assembled through a low-position assembling support, the height of a gantry crane can be reduced, the assembling speed is high, and the operation precision is high; the single lifting mechanism is arranged in the midspan, the number of the lifting tower frame is one, the number of the closure gap is one, the arch rib can be rapidly lifted and accurately positioned, investment of extra lifting equipment is reduced, and the construction efficiency of an arch rib structure which is large in span, high in rise and complex in structure can be effectively improved.

The invention discloses a bridge multi-dimensional deviation rectifying device which comprises a jacking system and a translation system, wherein the translation system is arranged around the periphery of the jacking system, and the translation system applies an acting force to the jacking system and enables the jacking system to slide; the translation system comprises a bottom plate, a rotating body and a pushing jack, the rotating body is rotatably connected to the periphery of the bottom plate, the pushing jack is installed on the rotating body, the piston end of the pushing jack penetratesthrough the rotating body and extends to the inner side, and the pushing direction of the pushing jack is adjusted in a 360-degree rotating mode through the rotating connection; the jacking system isconnected to the bottom plate in a sliding mode, and the jacking system slides relative to the bottom plate under the pushing effect of the pushing jack. Through mutual cooperation of the jacking system and the translation system, vertical jacking and three-dimensional deviation rectifying adjustment in the horizontal direction can be achieved, and the rotating body and the jacking system arranged on the rotating body can achieve 360-degree deviation rectifying adjustment in the circumferential direction by rotating the jacking jack.

The invention provides C30-level steel slag sand self compact concrete. The water-binder ratio of the concrete is controlled between 0.3-0.7, and is prepared from, by weight, 2-10 parts of steel slag sand, 2-10 parts of glass beads, 2-10 parts of cement, 5-7 parts of natural coarse aggregate, 2-5 parts of recycled coarse aggregate, 2-10 parts of sand, 1.3-1.7 parts of coal ash and 2-10 parts of water. The obtained C30-level steel slag sand self compact concrete is good in fluidity, passing performance through gaps and segregation resistance, and meets the intensity requirement; construction is convenient, and meanwhile the production cost of the concrete is reduced, and the preparing method is simple and suitable for commercial process.

The invention provides a hanging cage frame for high-sky large-size flue box body heat preservation construction. The hanging cage frame comprises an outer hanging frame and several jumping plates (7); the hanging cage frame is characterized in that the outer hanging frame comprises several square steel structure frameworks, the square steel structure frameworks surround the periphery of a flue box body at intervals, and each square steel structure framework comprises rectangular frames at the top, linear side trusses at the two sides and linear bottom trusses at the bottom, so that each jumpplate is arranged between the two adjacent square steel structure frameworks to form the hanging cage frame for the high-sky large-size flue box body heat preservation construction. The hanging cage frame has the advantages that the hanging cage frame is simple in structure and convenient to manufacture, through a hanging cage frame construction mode, construction on other majors in a limited space is satisfied, setting up of scaffolds is omitted, high-sky large-size flue construction requirements are also met, the problems of the limitation of a narrow site and the crossed majors are solved,the construction speed is increased, the construction cycle is shortened, and the engineering cost is lowered.

The invention discloses a bridge deck steel guardrail embedded part positioning structure. The structure comprises steel guardrail embedded parts on the left side and the right side, the steel guardrail embedded parts on the left side and the right side are located on the two sides in a transverse pouring groove, a longitudinal pouring groove is vertically formed in the middle of the transverse pouring groove, a transverse reinforcement cage is arranged in the transverse pouring groove, and a longitudinal reinforcement cage is arranged in the longitudinal pouring groove; each steel guardrail embedded part comprises a steel guardrail embedded part bottom plate, three screws are arranged on each of the two sides of the upper end face of the steel guardrail embedded part bottom plate, and positioning blocks are movably arranged on the three screws on the same side. According to the invention, the steel guardrail embedded parts are simple to fix, the relative position of the steel guardrail embedded parts can be accurately controlled, construction similar to that of the guardrail embedded parts can be met, the quality problem that a bridge deck steel guardrail cannot be installed subsequently or the guardrail line type is not straight due to insufficient installation accuracy of the embedded parts is solved, and the bridge deck steel guardrail embedded part has the beneficial effects of being good in overall stability and easy to operate.