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698results about How to "Speed ​​up the progress of the project" patented technology

Large-section loess tunnel construction method

The invention discloses a large-section loess tunnel construction method, which comprises the following steps that: the whole section is divided into an upper part, a middle part, a lower part and a bottom part, wherein the middle part is divided into a middle left area, a middle right area and a middle intermediate area, the lower part is divided into a lower left area, a lower right area and a lower intermediate area, the four parts are excavated in a benching tunneling method with altitude differences, the upper part is 3-5m in front of the front middle part, the middle part is 3-5m in front of the front lower part, the lower part is 10m in front of the front bottom part, and the step-by-step tunneling excavation is carried out. The invention is suitable for collapsed loess areas, realizes the safe and reliable construction and saves a large number of temporary supporting steel frames. Due to the arc-shaped pilot tunnel method, the loop can be formed rapidly during excavation, the disturbance to the surrounding rock is low, the primary support is stable, the traditional construction method is further improved to be the 'two-step and four-part excavation method', and the construction cycle period is short. Moreover, the invention can speed up the progress of the project, shorten the construction period, and reduce the cost of the project.
Owner:CHINA RAILWAY 23RD BUREAU GRP THIRD ENG CO LTD

Hydraulic climbing system for wall-attached support frame

The invention discloses a hydraulic climbing system for a wall-attached support frame. The system comprises a support upright post, a support frame device and a hydraulic jacking device, wherein the support frame device is detachably connected with a bracket which is fixed on a core barrel concrete wall and at least comprises an upper support frame device and a lower support frame device; both the upper support frame device and the lower support frame device are provided with upright post supporting devices and upright post clamping devices; climbing step blocks are vertically distributed at intervals on a column of the support upright post; and the support upright post is supported on the upright post supporting device through the climbing step blocks and is connected with the upper support frame device and the lower support frame device through the upright post clamping devices in a clamping way. In the system, an overall elevating template system, a construction steel platform system, a tower crane support system and the like are automatically elevated entirely along with the height increase of a building main body. The system has high safety, short climbing time and high construction efficiency, and can be used repeatedly in different projects.
Owner:CHINA CONSTR THIRD ENG BUREAU GRP CO LTD

Efficient building steel plate polishing device

The invention discloses an efficient building steel plate polishing device. According to the technical scheme, a step shaft is sleeved with a driving shaft and is fixedly connected with an annular sliding groove, and the lower end of the annular sliding groove is fixedly connected with a grinding wheel; the upper part of the driving shaft is fixedly connected with a first bevel gear, a second bevel gear is fixedly connected with the end of a worm, the worm is sleeved with the upper part of a retainer, the retainer is fixedly connected with a device body, and a bearing at the other end of the worm is rotationally connected with the inner wall of the device body; and the worm is fixedly connected with an eccentric groove wheel, the lower end of the eccentric groove wheel is clamped at the upper end of a vertical supporting rod, and the lower end of the vertical supporting rod is connected with the annular sliding groove in a sliding mode. According to the device, through the driving shaft and the eccentric groove wheel, the grinding wheel can rotate to polish and move up and down at the same time, the worm rotates to drive the worm wheel to rotate, and then a steel plate can be driven to automatically and intermittently fed through a cam, the grinding wheel is separated from the steel plate when the steel plate is fed, and the grinding wheel polishes downwards when the steel plate is static; and the device is reasonable and practical in structural design, greatly improves the polishing efficiency of the building steel plate, is high in automation degree, and is beneficial toimproving the engineering progress.
Owner:CHANGSHA FENGYING MACHINERY TECH CO LTD

Foundation integrated processing construction method of cover type karst area

The invention relates to a foundation processing method, in particular to a foundation integrated processing construction method of a cover type karst area. The method comprises the following steps of: evacuating earth moving machinery when a foundation pit is excavated until a limestone formation is exposed in a large area; basically exposing rocks of the bottom of the foundation pit after excavating, wherein rock buds are exposed from a foundation base, and the storage quantity of damic earth among the rock buds does not influence the next procedure construction; adopting weakened loose blasting operation, aiming at solution cracks, intermountain gulches and locally crushing bedrocks, and mechanically crushing and clearing; adopting a complex geophysical prospecting technological means that a high-density resistivity method is combined with a geological radar, arranging a high-density electrical geophysical prospecting wire in a construction site according to an arrangement rule, meanwhile, arranging a detailed exploratory hole in a building planning position, and mechanically picking the solution cracks, the intermountain gulches and the locally crushing bedrocks; adopting sleeve valve cement flour and coal ash slurry injecting constriction and cement flour and coal ash slurry filling constriction by a solution cavity slurry-injection method; and filling and casting concrete. The invention can quicken a work progress and can save construction cost compared with other foundation processing modes.
Owner:CHINA 22MCC GROUP CORP +1

Deep-hole and shallow-hole combined bench blasting method capable of reducing blasting boulder rate

InactiveCN102506623AAvoid uniformityAvoid problems that are mainly concentrated in the bottom of the blast zoneBlastingQuincunxDeep hole
The invention relates to a deep-hole and shallow-hole combined bench blasting method capable of reducing blasting boulder rate. The method comprises the following steps of: 1) drilling boreholes on the bench of a blasting area through a triangular or quincunx-shaped hole arrangement method according to open deep-hole bench blasting design and requirements to obtain deep holes; 2) drilling a shallow borehole with hole diameter being less than or equal to 50mm in the middle between every two deep holes in the same row to obtain shallow holes; 3) respectively charging the deep holes and the shallow holes, laying initiating explosive cartridges and blocking the mouths of the deep holes and the shallow holes; and 4) conducting row-to-row sequential short-delay initiation according to initiation sequence in design requirements and blasting in one step. The deep-hole and shallow-hole combined bench blasting method capable of reducing blasting boulder rate has the advantages that the problem of high boulder rate of blocked sections in a deep-hole bench blasting method is solved, the blasting effect is improved, the subsequent excavating and loading efficiency is improved, the engineering progress is accelerated and the engineering cost is reduced.
Owner:LANZHOU UNIVERSITY

Building floor tile laying device

The invention discloses a building floor tile laying device. The upper end of a driving shaft is connected with the right end of a sleeving rod in a sleeved mode; the left end of the sleeving rod is fixedly connected with a device body; the upper end of the driving shaft is fixedly connected with a chain wheel; the chain wheel is in engaged connection with the left end of a chain; the right end ofthe chain is engaged with a right chain wheel; the right chain wheel is fixedly connected with a driven shaft, and the upper end of the driven shaft is rotationally connected with a slurry tank through a bearing, and the lower end of the driven shaft is rotationally connected with a buffer plate; the buffer plate is fixedly connected with the lower portion of the slurry tank; the lower end of thedriven shaft is fixedly connected with a movable groove plate; and a fixed groove plate is arranged at the lower end of the movable groove plate. According to the building floor tile laying device, the driven shaft rotates to stir cement slurry; a lead screw drives a thread sleeve to move horizontally in a reciprocating mode, and thus single tile supply is achieved; and intermittent discharging is conducted under the effect of the movable groove plate, and a transverse plate is inclined in a reciprocating mode to be horizontal so as to lay tiles stably. The device is reasonable and applicablein structural design, the laying efficiency of the building floor tiles is improved greatly, and the automation degree is high, so that the function of simultaneous cement grouting and floor tile laying is achieved, and the engineering progress is accelerated.
Owner:刘晓菊

Manufacturing method of reinforcement cage of pouring pile with large diameter

The invention discloses a manufacturing method of a reinforcement cage of a pouring pile with the large diameter, relating to the technical field of construction project. The invention aims at reducing the labor intensity while improving manufacturing accuracy and work efficiency. The method is characterized in that a manufacturing device consisting of a plurality of rolling bearing frame assemblies and transmission bearing frame assemblies is arranged according to a projection line of a central axis line of the reinforcement cage; openable ring mould assemblies are arranged on each transmission bearing frame assembly; inner walls of the ring mould assemblies are provided with a plurality of main reinforcement positioning grooves; main reinforcements of the reinforcement cage is lifted into the ring mould assemblies, the ring mould assemblies are driven through a low-speed drive gear to rotate so that each main reinforcement enters the main reinforcement positioning grooves and is fixedly welded with rectilinear hoops; and the ring mould assemblies are rotated and winded and reinforcing steel bars are rounded by using spot welding so as to realize mechanization manufacture of the reinforcement cage of the pouring pile with the large diameter. The method provided by the invention can realize high manufacturing accuracy and cage-making work efficiency of the reinforcement cage, can greatly reduce the labor intensity and reduce the worker amount of unit cage manufacture amount and is beneficial to quickening the project progress.
Owner:SHANGHAI GUANGLIAN ENVIRONMENTAL & GEOTECHNICAL ENG CO LTD

Construction method of prefabricated wallboard

The invention discloses a construction method of a prefabricated wallboard. The construction method of the prefabricated wallboard comprises the following steps of 1, numbering the prefabricated wallboard after the wallboard is prefabricated in a factory, and transporting the prefabricated wallboard to a site; 2, checking components and confirming the number; 3, before hoisting, constructing the bottom laying position of the prefabricated wallboard; 4, hoisting and installing the prefabricated wallboard, wherein before the prefabricated wallboard is hoisted, upper and lower supporting end bases of an inclined strut are firstly installed, after the prefabricated wallboard is hoisted, the prefabricated wallboard is adjusted in position and is connected with the inclined strut to be fixed, then a tower crane hook is unhooked, the perpendicularity of the prefabricated wallboard is adjusted, finally, the periphery of the prefabricated wallboard is sealed, and a grouting sleeve is utilized to conduct mortar injecting. By means of the construction method of the prefabricated wallboard, a component assembly mode is adopted, a structural wallboard is divided into multiple blocks, after being prefabricated in the factory, the prefabricated wallboard is hoisted and installed on spot, and certain construction treatment is conducted, which helps to improve the construction quality, accelerate the engineering progress, and improve the building quality.
Owner:BEIJING URBAN CONSTR NORTH CONSTR

Multifunctional engineering installation vehicle

The present invention discloses a multifunctional engineering installation vehicle used for engineering construction, which comprises a vehicular support frame, a walking and the like. In the vehicle as a gantry supporting frame structure, a extensible guide supporting frame for X axial movement is connected forwards with a Z axial direction tunable movable lift hook; at the C axial movement extensible guide supporting frame, there is an outside force acting at the Z axial direction, which can be a pull force of a armored rope or a cylinder rod clean and jerk force of the hydraulic cylinder and used for pushing the X axial movement extensible guide supporting frame for a vertical motion; a lifting platform is installed at the vehicle roof to execute pipe laying pipe laying, anti-corrosion, heat preservation, laying and maintenance of cable rope and crane span structure, and the like; the Z axial direction tunable movable lift hook inside the vehicle is used for lifting and loading articles of merchandise to realize installation of equipments; a labor saving and quick-releasing pipeline frame is allocated for carriage of pipelines; a ground tray is allocated, which is used for lifting, loading and transporting large and heavy workpieces. The multifunctional engineering vehicle is a powerful machinery for constructions, and the plurality of functions mentioned above greatly improves the installation quality, saves 2 times for the human energy and improves the work efficiency more than 10 times.
Owner:CHINA CONSTR IND & ENERGY ENG GRP CO LTD

Method for constructing subway tunnel with complicated geology and without shield launching site

The invention relates to the technical field of subway construction, in particular to a method for constructing subway tunnel with complicated geology and without shield launching site, which solves the problems of complicated geology in the subway section and failure to provide shield launching site on time in the exiting subway construction process. The method comprises the following steps of arranging a shield inclined shaft in a preset tunnel section; respectively constructing a shield empty-push hidden excavation section and a synchronous-construction hidden excavation section at both ends of the shield inclined shaft by a mine method, and timely applying primary support; connecting the shield empty-push hidden excavation section to a shield tunneling section; enabling a shield body and subsequent auxiliary equipment which are lowered and assembled by the shield inclined shaft to respectively adopt the splitting launching type to arrive at the shield pushing section via the shieldempty-push hidden excavation section, and performing shield tunneling launching; excavating the synchronous-construction hidden excavation section to a subway station by the mine method. The subway tunnel construction method has the advantages that compared with single shield construction method, the advantages of various working methods are fully played; the abrasion of a tool disc is reduced, the condition of frequent bin opening for tool replacing is avoided, the safety risk is decreased, the construction progress is quick, and the like.
Owner:CHINA RAILWAY 12TH BUREAU GRP +1

Medium ground tunnel milling excavating and mating mechanized construction method

The invention discloses a medium ground tunnel milling excavating and mating mechanized construction method. The construction method includes the steps that the center of an upper step is excavated by a large breaking hammer to be in a paraboloid shape, after the outer portion of the center of the upper step is excavated and trimmed by a milling excavator to form an excavation face perpendicular to the tunnel axis, the upper step is supported to form a stable bearing arch, then the core soil part of a middle step is excavated by the large breaking hammer until a drill rod of the large breaking hammer is drifted, the edge wall parts on the left side and the right side of the middle step are excavated and trimmed by the milling excavator, initial supporting is carried out, the core soil part of a lower step is excavated by the large breaking hammer, the edge wall parts on the left side and the right side of the lower step are excavated and trimmed by the milling excavator, initial supporting is carried out, deslagging is carried out, and the steps are repeated until excavation of a whole tunnel is completed. By means of the medium ground tunnel milling excavating and mating mechanized construction method, the advantages of mating mechanized construction of the milling excavator are sufficiently exerted, accurate molding of the tunnel profile is achieved, surrounding rock is small in disturbance, back break control is good, the working environment is good, the construction safety is high, and influences of vibration of blasting are avoided.
Owner:SHENHUA BAOSHEN RAILWAY

Arch bridge abutment tunnel type large-angle inclined pile construction method

The invention discloses an arch bridge abutment tunnel type large-angle inclined pile construction method comprising the following steps: an inclined pile is divided into an upper step and a lower step which are separately excavated by weak blasting, the top half circle and the straight wall are 2-3m in total and are excavated first as the upper step, and the lower step begins to be excavated after the upper step is excavated 3-5m; inclined pile slag is extracted by a reciprocating circulation slag extractor, pile slag of the upper step is transshipped by the slag extractor to the bottom of the lower step and then conveyed from the bottom of the lower step to the outside of a hole, and the hole is cleaned manually; after excavation of each section of each step is completed, breast wall support is completed in time in a mode of breast wall anchoring and shotcreting support through a mortar rock bolt, a steel mesh, an I-shaped steel arch and sprayed concrete; and holing quality detection is carried out after excavation of the inclined pile is completed, and inclined pile body reinforcing bar and concrete construction is completed after the holing quality meets the design and specification requirements. By adopting the method of the invention, the project progress is accelerated, the construction cycle is shortened, the working efficiency of slag extraction is improved, and the difficulty in breast wall concrete construction is reduced.
Owner:THE FOURTH ENG CO LTD OF CTCE GRP
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