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177results about How to "Shorten construction time" patented technology

Optical observation device of deformation in surrounding rock

The invention discloses an optical observation device of deformation in a surrounding rock, which comprises a steel wire, a displacement rotating disc, a reflecting membrane, a total station, a computer, a rotating shaft and a heavy hammer, wherein an anchoring head of a measuring point is fixedly connected with the rock wall in a measuring drilled hole of the surrounding rock, the rotating shaft is mounted on an orifice support, the displacement rotating disc and the reflecting membrane are coaxially mounted on the orifice support, the displacement rotating disc covers the reflecting membrane, the steel wire is wound on the rotating shaft, the steel wire is connected with the heavy hammer, the reflecting membrane is fixedly connected with the orifice support, the total station is connected with the computer, analysis software is installed in the computer, and the reflecting membrane can reflect collimation laser emitted by the total station. Windows are uniformly and symmetrically distributed on the displacement rotating disc by taking the shaft line of the rotating shaft as the center of a circle. The device can observe the relative displacement of the measuring point in the surrounding rock in a far-distance, convenient and direct manner, and be conductive to fast measurement of the deformation of the underground engineering surrounding rock and the real-time analytical study of stability.
Owner:INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI

One-time pouring concrete inverted arch and construction method thereof

The invention discloses a one-time pouring concrete inverted arch and a construction method thereof. Inverted arch concrete from a position below an inverted arch filling face of an tunnel inverted arch to an inverted arch primary support is a concrete whole which is free of a concrete boundary and concrete layers and is poured at a time with a same mark number. During construction, an inverted arch arc-shaped formwork is cancelled, and only inverted arch side wall formworks, an inverted arch end formwork and a central ditch formwork are installed; and the inverted arch side wall formworks areinstalled at preset heights of side walls on two sides of the inverted arch, the lower ends of the inverted arch side wall formworks are flush with a preset inverted arch filling face, concrete is poured into an inverted arch middle pouring area at a time to reach a designed height of the inverted arch filling face, and inverted arch concrete is poured into the inverted arch side wall formworks on two sides of the inverted arch to reach the preset height. The construction process is greatly simplified, the construction time is remarkably shortened, layered pouring interface gaps are reduced,inverted arch uplift caused by crack water frost heaving is prevented, the inverted arch construction quality is effectively improved, the engineering cost is saved, and the application range in tunnel construction must be wider and wider.
Owner:CHINA RAILWAY 11TH BUREAU GRP

Method for construction of measurement and pavement of GRP (ground reference point) of ballastless track reference network

The invention discloses a method for construction of measurement and pavement of a GRP (ground reference point) of a ballastless track reference network, which belongs to the technical field of construction of ballastless tracks of high-speed railways and solves the problems of long GRP measurement and pavement time and failure to guarantee precision. A high-precision robot type electronic total station and a high-precision electronic level are utilized and combined with an automatic GRP plane data acquisition software, the triangulateration network is measured and paved for the known CPIII (control panel III) and the unknown GRP according to the pavement principle of the triangulateration network, the data are recorded into a balancing software so as to obtain the coordinate of the GRP, altitude of the GRP is measured by the means of back vision-intermediate vision-front vision and by the known second-class level point. The method includes the following steps of setting out the GRP, mounting a locating cone and burying the GRP; measuring and paving the GRP planarly, balancing the GRP plane, measuring the altitude of the GRP and balancing the altitude of the GRP. By the method for construction of measurement and pavement of the GRP of the ballastless track reference network, cost is saved and work efficiency is improved. Besides, the method has evident social and economical benefits, is high in applicability, reliable in operation and easy to master.
Owner:THE FIRST ENG CO LTD OF CHINA RAILWAY NO 12 BUREAU GRP +1

Disassembling and assembling method for shield tunneling machine in tunnel

The invention discloses a disassembling and assembling method for a shield tunneling machine in a tunnel. The disassembling and assembling method comprises the following steps: firstly, preparation work before the disassembling and assembling as well as the entering of the site, providing a supporting mechanism, wherein the length of the supporting mechanism is at least greater than the height between a bridge of the shield tunneling machine and the ground; secondly, disassembling, assembling and entering the site: transferring the supporting mechanism to the lower part of a bridge frame of the shield tunneling machine, and welding the supporting mechanism with the bridge frame of the shield tunneling machine to form the support for the bridge frame of the shield tunneling machine; thirdly, disassembling the shield tunneling mechanism: disassembling the shield tunneling mechanism, maintaining and overhauling various systems of the shield tunneling machine, and removing faults; fourthly, assembling the shield tunneling machine: reassembling the maintained shield tunneling machine, disassembling and transferring the supporting mechanism out of the tunnel. According to the disassembling and assembling method for the shield tunneling machine in the tunnel, the drilling of a vertical shaft in the ground is avoided, and the shield tunneling machine is hoisted out of the tunnel for maintenance; most of faults of the shield tunneling machine can be handled in the tunnel, huge construction is omitted, the construction time is greatly shortened, and the maintenance cost is reduced.
Owner:JIANGSU KAIGONG TUNNEL MACHINERY

Clutch type formwork trolley, trolley assembly and underground passage concrete construction method

The invention discloses a clutch type formwork trolley, a trolley assembly and an underground passage concrete construction method, and belongs to the technical field of tunnel building concrete construction equipment. The formwork trolley comprises a top formwork trolley and side formworks, wherein the side formworks are distributed at the two sides of the top formwork trolley; a moving guide rail is arranged at the bottom of each side formwork; and each moving guide rail is matched with moving pulleys arranged at the lower end of the top formwork trolley to drive the corresponding side formwork to longitudinally move. The formwork trolley assembly comprises two top formwork trolleys coaxially arranged in the longitudinal direction of an underground passage and a set of side formworks, wherein the moving pulleys arranged at the lower ends of the two top formwork trolleys are in mutual butt joint, so that the side formworks longitudinally slide on the formwork trolley assembly. The construction method comprises the following steps of: firstly installing the formwork trolley assembly in place; then, performing concrete casting of a first construction section; next, performing demoulding on the side formworks, and moving the side formworks on the top formwork trolleys of the second construction section to be installed; then, casting the second construction step; and circulating the operations in such a way until the concrete construction of the whole underground passage is completed.
Owner:SHANGHAI MECHANIZED CONSTR GRP

High-strength anti-permeability leak-repairing material and preparation method thereof

The invention relates to a high-strength anti-permeability leak-repairing material and a preparation method thereof. The high-strength anti-permeability leak-repairing material comprises the followingcomponents in parts by weight: 710-800 parts of cement, 140-160 parts of quartz sand, 20-30 parts of a swelling agent, 35-45 parts of dispersing emulsion powder, 4-6 parts of lithium chloride, 5-10 parts of calcium chloride, 4-6 parts of calcium stearate, 4-6 parts of hydroxypropyl methyl cellulose, 2-3 parts of a water reducing agent, 4-6 parts of sodium hexametaphosphate and 4-6 parts of construction polypropylene fiber. The high-strength anti-permeability leak-repairing material is prepared from the components as follows: stirring and mixing a half of cement and a half of quartz sand for 10min, thereby acquiring a main material mixture; successively adding the other components except for the cement and quartz sand into the main material mixture, stirring and mixing for 10min, thereby acquiring an auxiliary material mixture; adding the residual cement and quartz sand into the auxiliary material mixture, stirring and mixing for 20min, thereby acquiring the high-strength anti-permeability leak-repairing material. The high-strength anti-permeability leak-repairing material prepared according to the formula and method has the characteristics of excellent cracking resistance, high toughness and excellent adhesiveness.
Owner:北京中建瑞特新材料股份有限公司

Prefabricated inspection well and road construction method involving inspection well

The invention relates to an inspection well, in particular to a prefabricated inspection well and a road construction method involving the inspection well. The road construction method involving the inspection well includes the following steps of (1) arranging a base with an opening, (2) installing a bottom cover on the base, wherein the position of the bottom cover can be determined, (3) normally laying a road bed and a road surface on the bottom cover, (4) prefabricating the inspection well, (5) determining the position of the bottom cover, (6) smoothly cutting the road surface until the bottom cover is exposed and taking out the bottom cover, (7) placing the prefabricated inspection well, and (8) wholly or partially replacing, maintaining and recycling the prefabricated inspection well. The road construction method has the advantages that labor and road manufacturing cost are effectively reduced, road on-site construction time is shortened, the situation that the road surface is uneven due to uneven sediment of the surrounding of the inspection well is effectively avoided, flatness of the road surface is improved, road construction quality is improved, maintenance time of the inspection well is substantially shortened, and the inspection well can be recycled.
Owner:于有为

Integrated construction equipment for binding and lifting continuous beam steel reinforcement framework and construction method

ActiveCN102605720AShorten construction timeSave tying timeBridge erection/assemblyContinuous beamRebar
The invention discloses integrated construction equipment for binding and lifting a continuous beam steel reinforcement framework. The integrated construction equipment is characterized in that a steel reinforcement binding fixture for binding the steel reinforcement framework is arranged on a cast bridge floor, a truss-type slide lifting appliance is longitudinally arranged above the steel reinforcement binding fixture, the front end of the truss-type slide lifting appliance is supported on a front upper beam of a cradle through a front end support, the tail end of the truss-type slide lifting appliance is supported on the cast bridge floor through a tail support, a crown block is mounted on the truss-type slide lifting appliance, and the steel reinforcement framework can be integrally lifted via a steel reinforcement hanger lifted by the crown block. The steel reinforcement binding fixture is mounted on the constructed bridge floor and used for binding the steel reinforcement framework, steel reinforcements are lifted into the cradle by the truss-type slide lifting appliance, steel reinforcement binding and beam section construction are realized simultaneously, and construction time is greatly shortened.
Owner:THE FIRST ENG CO LTD OF CTCE GRP

Steel plate pavement road and construction method thereof

The invention discloses a steel plate pavement road and a construction method thereof. The steel plate pavement road comprises rectangular steel plate blocks, connecting pieces and connecting bars, wherein each steel plate block comprises a first side edge, a second side edge, a third side edge and a fourth side edge which are adjacent sequentially, through holes are formed in each steel plate block, and each through hole is formed in the included angle position defined by every two adjacent side edges; at least two threaded holes are formed in each connecting piece; the connecting bars are inserted into the adjacent through holes of two adjacent steel plate blocks respectively and integrally connect the adjacent steel plate blocks through the threaded holes of the connecting pieces. According to the steel plate pavement road and the construction method, welding assembly is not needed when the steel plates are assembled, the steel plate assembly operation depends on the connecting bars and the connecting pieces, screws are screwed out during dismounting, and lifting work is performed by directly utilizing lifting holes, so that the operation is simple and convenient, the construction time is greatly shortened, and steel plate damage is negligible.
Owner:CHINA CONSTR SECOND ENG BUREAU LTD

Small feet-lock guide pipe with steel plate connection

ActiveCN103277125AShorten construction timeImprove the construction environmentAnchoring boltsSteel platesClerestory
The invention relates to a small feet-lock guide pipe with steel plate connection. The small feet-lock guide pipe is characterized in that a feet-lock steel plate with two symmetric round holes is welded on H-shaped steel to be locked at feet, small feet-lock guide pipes drilled with mortar injection holes penetrate the round holes of the feet-lock steel plate to be hit into wall rock, a reinforcing steel bar limit ring is sleeved at one end of each small feet-lock guide pipe and used as a connector for welding and fixing the feet-lock steel plate and the small feet-lock guide pipes. By the small feet-lock guide pipe, the wall rock and the small feet-lock guide pipes can be tightly connected, the small feet-lock guide pipes are fixedly connected with the H-shaped steel in preliminary bracing, so that the purposes of controlling restraint, controlling arch and controlling integral submergence of the ground are achieved. Members can be processed and manufactured industrially, the steel plate and the H-shaped steel can be welded in advance outside a tunnel, construction time in the tunnels is shortened, construction progress and construction quality are improved, and construction environment inside the tunnel is improved. The small feet-lock guide pipe is safe, reliable and convenient to operate, and meets requirements of safety, quality, progress, economic benefits, social benefits and the like.
Owner:云南交投集团云岭建设有限公司

Material saving device and method for supporting transverse stress pile

The invention relates to the field of foundation pit supporting or slope supporting engineering, in particular to a material saving device and a method for supporting a transverse stress pile. The material saving device comprises more than one pile body, wherein the pile bodies are distributed side by side and are connected with a bidirectional support; the bidirectional support is connected with a steel strand system; the steel strand system comprises more than one son steel strand; each son steel strand comprises a multi-strand branch steel strand; the branch steel strand is divided from the son steel strand part and is fixedly connected with the bidirectional support. The material saving device has the beneficial effects that the construction time and the construction space can be greatly saved and the base slot excavation and the backfill earthwork volume are reduced compared with the conventional construction technology, the using amount of a material in the construction process is reduced, special reinforcing frameworks such as channel beam are not required, the material is saved by 95 percent, but the reinforcing effect is better, the stress is uniform and the steel strand is used for reinforcing the entire body of the more than one pile bodies in a separate mode, so that the problem of non-uniform stress of the steel strand in the conventional construction process is avoided.
Owner:韩凤霞

Asphalt concrete pavement 3D paving construction method

The invention relates to an asphalt concrete pavement 3D paving construction method. The method includes the following steps that construction is prepared; a construction segment is determined; a three-dimensional digital model of the construction segment is established; laser emitter control points are distributed; design elements of a paved face are determined, and the longitudinal slope of a paved region and the design elevation of a paved belt start point are calculated according to design requirements; laser emitters are installed according to the position of a paved belt, the design elements of the to-be-paved region are input into the laser emitters, and the paved face accuracy set in the laser emitters is detected and checked; a paver and paver parameters are established; the control points, paved face information and laser receiver and laser emitter data are input into a control system, and the control system determines the height of a distributor of the paver; and paving is organized to be implemented. By the adoption of the asphalt concrete pavement 3D paving construction method, the parameters such as the paving thickness, the paving width and the pavement elevation inthe asphalt concrete pavement paving construction process are accurately and automatically controlled.
Owner:JIANGSU SINOROAD ENG TECH RES INST CO LTD

No. 0 block construction bracket and reverse tension preloading method thereof

The invention discloses a No. 0 block construction bracket and a reverse tension preloading method thereof. By virtue of reverse tension of jacks, the measurement of force borne by each important joint and the measurement of elongation of tie rods, the bracket construction is realized gradually and quickly; compared with a traditional construction method, the No. 0 block construction bracket and the reverse tension preloading method thereof save the construction time and reduce the construction difficulty; steel strands are saved and the cost input is reduced; materials and equipment used areall reusable so as to avoid extra waste of the steel strands; the application range is expanded and restrictive conditions are reduced; the No. 0 block construction bracket and the reverse tension preloading method thereof can be applied to all projects which are restricted by the environment and which can not be constructed according to the conventional preloading method; the reverse tension preloading method disclosed by the invention can detect many joints, and can simulate the state more effectively; and the preloading of each key joint is performed through the jacks so as to ensure the engineering quality and effectively solve the preloading problems in the construction process.
Owner:中铁二十三局集团第六工程有限公司

Tied-arch bridge deflection identification method based on long gauge length fiber grating sensors

ActiveCN105716534AReduce equipment and personnel budgetShorten construction timeUsing optical meansPhysicsFiber optic sensor
The invention discloses a tied-arch bridge deflection identification method based on long gauge length fiber grating sensors. The method comprises the steps of: arranging sensor, specifically, arranging one continuous long gauge length fiber grating sensor in the lengthening direction of the bottom part of a tie beam of the tied-arch bridge, and respectively arranging one long gauge length fiber grating sensor on three units arranged on different positions in the length direction of the top part of the tie beam of the tied-arch bridge; collecting and processing data, and specifically calculating the axial strain of each unit; adopting a parabola fitting mode to obtain the axial strain on the whole tie beam; according to the axial strain on the whole tie beam obtained by fitting, calculating the bending strain on the whole tie beam; and according to the obtained bending strain, calculating the deflection of the tie beam on the tied-arch bridge. According to the invention, the plurality of sensors are added based on an original sensor arranging scheme, and the sensing arranging scheme of the sensors on the top part of the tie beam is made. In this way, the equipment and manual budget is substantially lowered, the construction time is saved, and more economic benefits can be made.
Owner:SOUTHEAST UNIV

Composite type axial cold extruding steel bar connecting sleeve and mounting tool

The invention relates to a composite type axial cold extruding steel bar connecting sleeve and a mounting tool. The composite type axial cold extruding steel bar connecting sleeve comprises an inner sleeve body and an outer sleeve body. The inner sleeve body is provided with an inner sleeve part; the inner sleeve part is a complete cylinder penetrating in the length direction of the inner sleeve part; outer conical parts are arranged at the at least one end of outer surface of inner sleeve part; and the diameters of the outer ends of the outer conical parts in the length direction of the inner sleeve part are smaller than the diameters of the inner ends of the outer conical parts in the length direction of the inner sleeve part. The outer sleeve body is provided with an outer sleeve part; the outer sleeve part is a cylinder penetrating in the length direction of the outer sleeve part; inner conical parts are arranged at one end of inner surface of outer sleeve part; and the diameters of the outer ends of the inner conical parts in the length direction of the inner sleeve part are larger than the diameters of the inner ends of the inner conical parts in the length direction of the inner sleeve part. The composite type axial cold extruding steel bar connecting sleeve can improve the machining efficiency.
Owner:青岛森林金属制品有限公司
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