59results about How to "Does not affect the duration" patented technology

The invention relates to the field of building foundations, in particular to a method for dredging a soft foundation by dredger fill and reinforcement. The method includes: a, zoning for dredger fill; b, forming a primary drainage system; and c, performing layered and zonal filling and reinforcement. The method is characterized in that in zoning for dredger fill, each filling unit (11) is 20000m<2>-50000m<2> in area; in formation of the primary drainage system, digging crisscross blind ditches (31) on the surface of the filling unit (11), and laying corrugated filter pipes (32) and drain boards (33) on the surface for the filling unit (11); and in layered zonal filling and reinforcement, filling the filling area (1) level by level, and reinforcing with all levels of drainage networks. The method is convenient in construction, short in construction period, effective in foundation treatment and low in construction cost.

The invention discloses a waterproof method for prefabricated reinforced concrete box culvert interfaces and an interface water stopper. The waterproof method comprises the following steps of: pre-forming a first groove at a predetermined position far from a first box culvert interface, and pre-forming a second groove at a predetermined position far from a second box culvert interface; injecting epoxy resin adhesive into the first groove and the second groove respectively; and plugging two wings of the interface water stopper into the first groove and the second groove respectively, and sticking the two wings of the interface water stopper in the first groove and the second groove after the epoxy resin adhesive is solidified, wherein the two wings of the interface water stopper are provided with an anchoring part respectively, and the transverse size of the section of the anchoring part is greater than that of the middle section of the interface water stopper. According to the waterproof method for the box culvert interfaces, the two wings of the interface water stopper are stuck into the grooves of the box culvert interfaces to finish sticking, and the interface water stopper is adopted for preventing water; and compared with a conventional O-shaped rubber ring waterproof method, the method has the advantages of high waterproof reliability and long service life.

The invention discloses a bonded post-tensioned prestressed anchoring construction method for a cast-in-place concrete structure. The method comprises the following steps of: manufacturing and placing a steel bar cage, a steel conduit end check valve and cast-in-place concrete to form an underground structure, descending a prestressed steel strand to a design connecting part after the underground structure is molded and reaches the age, and tensioning the steel strand, anchoring and relaxing an end and grouting in a steel conduit by using special equipment, so that a prestressed steel bar is protected, and bonded connection is realized. The problem that a pile and an underground continuous wall bear buoyant force and horizontal force is solved; for the underground continuous wall which bears high bending moment, the problem that the wall on the side with higher bending moment is cracked is solved; steel is saved, the structure is easy and convenient to construct, environment is not polluted, the working surface and the construction period are not influenced, the quality guarantee rate is high, and the prestressed steel strand is inserted in a short time when the concrete is poured; and a bonded prestress applying mode is realized, the prestressed steel strand can be protected, and the durability of the underground structure is guaranteed.

The invention provides a micro-expansion super early-strength bearing grout which comprises the following raw materials in parts by weight: 30-50 parts of cement, 40-60 parts of sand, 0.5-2.5 parts of water-reducing agent, 2-4 parts of expanding agent, 0.1-0.5 part of retarder and 5-10 parts of enhancer. The micro-expansion super early-strength bearing grout has the following advantages: (1) the working property is excellent, the initial fluidity reaches 320mm, and the fluidity at 30min is still above 240mm; (2) the early strength has rapid development, the strength at the late stage is not reduced, the compressive strength at 2h can be more than 20MPa, the compressive strength at 24h is more than 40MPa, the flexural strength is greater than 10MPa, and the compressive strength at 28d is greater than 50MPa; and (3) the micro-expansion super early-strength bearing grout has micro-expansion property. In view of the advantages, the micro-expansion super early-strength bearing grout can effectively improve the construction rate of a foundation bearing and other structures, and ensure the installation conformance and the construction quality of members.

A repair method of an unqualified post-grouting bored concrete pile is characterized by comprising the following steps: a, drilling a plurality of lead holes at the outer side of a bored concrete pile body; b, supplementing a post-grouting pipe at the outer side of the bored concrete pile; c, conducting post-grouting construction; and d, maintaining the bored concrete pile, and inspecting and accepting the bored concrete pile, wherein the posting-grouting construction includes the following steps: (1) providing raw materials of slurry, (2) preparing the slurry, (3) conducting preparation for grouting construction, (4) conducting the first round of grouting, (5) conducting the second round of grouting, and (6) controlling over stop of the grouting. The repair method of the unqualified post-grouting bored concrete pile has the advantages of being reasonable in design of construction steps, easy and convenient to operate, safe and reliable in construction quality, free from influencing the construction period, remarkable in economic benefit, and capable of guaranteeing that a project is implemented smoothly.

The invention discloses a bonded post-tensioned prestressed construction method for a cast-in-place reinforced concrete structure. The method comprises the following steps of: determining prestress applying length by using a design unit; manufacturing, placing and connecting a steel bar cage, placing a steel conduit end, an automatic locking anchoring tool and cast-in-place concrete to form an underground structure, descending a prestressed steel strand to a design connecting part after the concrete structure is molded and reaches the age, and tensioning the steel strand, anchoring and relaxing the end and post-grouting in a steel conduit by using special equipment, so that bonded connection is realized. The problem that a pile and an underground continuous wall bear buoyant force and horizontal force is solved; for the underground continuous wall which bears high bending moment, the problem that the wall on the side with higher bending moment is cracked is solved; steel is saved, the structure is easy and convenient to construct, environment is not polluted, the working surface is not influenced, the quality guarantee rate is high, and prestress applying time is not limited by construction time; and a bonded prestress applying mode is realized, the prestressed steel strand is protected, and the durability of the underground structure is guaranteed.

The invention discloses a second lining grouting-with-template mechanism for a full hydraulic trolley. The second lining grouting-with-template mechanism comprises a lining trolley shell, wherein three grouting exhaust holes are formed in the lining trolley shell; the three grouting exhaust holes comprise a first grouting exhaust hole, a second grouting exhaust hole and a third grouting exhaust hole, the first grouting exhaust hole is formed in the top of the lining trolley shell, and the second grouting exhaust hole and the third grouting exhaust hole are correspondingly formed in both sidesof the bottom of the lining trolley shell; and RPC grouting pipes are arranged inside the grouting exhaust holes, and template fixing flanges are arranged at the bottom of the lining trolley shell. According to a technology, the construction is convenient and reliable, and grouting during a lining construction period does not affect the overall construction period; and the RPC grouting pipes withtemplate grouting can start grouting after initial setting of concrete, and a lining cavity is fully compacted and the lining defects are repaired through higher grouting pressure.

The invention provides a reinforced structure used for concrete displacement of a shear wall and a construction method of the reinforced structure. The reinforced structure includes a newly poured concrete wall surface and a number of permanent steel stand columns, wherein the permanent steel stand columns are arranged in the newly poured concrete wall surface side by side at intervals; the two sides, parallel to the wall surface, of each permanent steel stand column are provided with reinforcing steel bar nets, and each permanent steel stand column includes a center steel column, a connection steel plate located at the upper end of the center steel column, a nut located at the upper end of the connection steel plate, and a screw rod; the top ends of the screw rods on the upper portions of the permanent steel stand columns are welded with upper steel plates, the bottom portions of the steel columns are welded with lower steel plates, the upper steel plates are fixed with upper floor slabs, and the lower steel plates are fixed with ground floor slabs; a horizontal support is arranged between every two adjacent steel columns so as to increase the stabilization of the permanent steel stand columns and prevent the lateral deformation of the steel stand columns. According to the reinforced structure and the construction method of the reinforced structure, the mode in which concrete is dismantled in sections and the permanent steel stand columns are built in the concrete is adopted, the normal construction of the upper structure is not affected, that is, the shear wall displacement and the upper structure construction are conducted at the same time, the progress of the whole project is ensured, and the whole construction period is not affected.

The invention relates to a component application validation process establishment method for space navigation. The method comprises the following four steps: application validation work analysis, process logic structure model establishment, optimization calculation adjustment and process review. In the step of application validation work analysis, an evaluation index system for application validation is established according to components and requirements; in the step of process logic structure model establishment, a validation work project, a validation work sub-project and a logical relationship between the validation work project and the validation sub-project are expressed by a single code network diagram based on a work breakdown table of work analysis, and an associated logical structure diagram of an application validation process and a related process, and a logical structure diagram of application validation detailed processes are established; in the step of optimization calculation adjustment, an optimized and adjusted process network diagram, a corresponding working period and a key line are obtained on the basis of the logical structure diagram and time parameters; in the step of process review, the adjusted network diagram is reviewed based on establishment criterion, proposed problems are fed back and are modified, and finally a process is determined. By the method, the conduct of the actual application validation work can be guided effectively.

The invention discloses a cast-in-place pile end slurry supplying and grouting device and method. The device comprises a sounding pipe or steel pipe used for a slurry supplying and grouting channel, a probe used for breaking through the bottom of the sounding pipe or steel pipe, a probing rod used for conveying the probe to the pile end of the cast-in-place pile end and a counterforce device used for driving a static penetrometer of the probe; the sounding pipe or steel pipe embedded in the cast-in-place pile required to be subject to slurry supplying and grouting is selected to serve as the slurry supplying and grouting channel, the probe is mounted at one end of the probing rod, the other end of the probing rod is connected with the static penetrometer, the probe is conveyed to the bottom of the sounding pipe or steel pipe through the probing rod, the counterforce device of the static penetrometer is started, pressure is applied to the probe, the bottom of the sounding pipe or steel pipe is broken through, and finally a grouting pipeline system is put into the bottom of the slurry supplying and grouting channel to be subject to pile end slurry supplying and grouting construction of the cast-in-place pile.

The invention relates to the technical field of construction of fabricated overall frameworks, and discloses a hoisting construction method for fabricated overall framework cast-in-situ core tube structures. The method includes the following steps that the number and types of tower cranes are determined according to the weights and positions of heaviest prefabricated parts and the preliminary positions of the tower cranes; the final positions of the tower cranes are determined according to an architectural plan, an architectural structure pattern and a cellar structure; performance parametersof the tower cranes are comparatively verified according to the maximum weights of the prefabricated parts and the maximum weight existing in construction; the tower cranes are arranged; and the attachment forms of the tower cranes are determined, wherein according to the attachment forms, the tower cranes are attached to structural columns, the tower cranes are attached to framework beam sides, and the tower cranes are attached to framework beam tops. In the model selection process, the working radius, the maximum hoisting amount of the prefabricated parts, the positions and attachment formsof the tower cranes and the like are combined for overall consideration, and the method has the beneficial effects that the efficiency of the tower cranes is high, and the balance degree between hoisting operation areas is high.

The invention discloses a cost early warning method and device for a fabricated building. The cost early warning method for the fabricated building comprises the steps of obtaining the price information of materials of components in different purchase periods, gathering the price information, and obtaining the price change trend corresponding to the materials of all the components; acquiring the current price of the material of the component, the bidding price of the material, the cost profit and loss of the purchased material of the building project, the quantity of the remaining material anda preset component production plan; generating a purchase plan of the material according to the price change trend, the current price of the material, the bidding price of the material, the cost profit and loss of the purchased material of the building project, the quantity of the remaining material and the preset component production plan; and calculating the real-time cost profit and loss of the building project according to the purchase plan, the bidding price and the cost profit and loss of the purchased materials, so that the technical problem that the building construction cost cannot be accurately predicted due to the fact that the price of materials for producing components changes along with the market, is solved.

The invention discloses a paying-off method for an arc-shaped wall control line. The paying-off method comprises the steps that standard point position coordinates of standard control points are obtained, and the standard control points are points on the standard control line; a gauge circular plate is obtained, and the gauge circular plate is obtained by machining according to the standard control line; actual control points are marked on a construction site according to the standard point position coordinates; the gauge circular plate is compared with the actual control points, and an arc ofthe gauge circular plate penetrates through the two adjacent actual control points; and the actual control line is marked according to the arc line of the gauge circular plate. According to the paying-off method for the arc-shaped wall control line, the accuracy of point positions is ensured, the paying-off point positions are greatly reduced, and the paying-off time is saved.

The invention relates to the technical field of construction waste crushing, in particular to a crushing device for construction and a working method thereof, comprising: a feeding hopper, a material box, a reinforcing rib, a base, a supporting column, a first motor, a first fixing plate, a first a toothed roller, a toothed plate, a discharge port, a second motor, a first gear box, a second gear box, a second fixed plate, and a second toothed roller; a feeding hopper is arranged above the material box, and the feeding hopper The bottom is connected with the top of the material box through bolts; the long edge of the inner side of the material box is provided with a first fixing plate, and the first fixing plate is connected with the material box by welding; the upper surface of the first fixing plate is provided with The toothed plate is connected with the first fixing plate by bolts. Through structural improvement, the invention has the advantages of small floor space, replaceable tooth plate, convenient maintenance, lower use cost of the device, strong mobility, and even crushing, etc., thereby effectively solving the problems existing in the existing device. problems and deficiencies.

The invention relates to the technical field of landfill facilities, and particularly relates to a landfill reservoir area anti-seepage system capable of protecting a geomembrane and a construction method thereof. The landfill reservoir area anti-seepage system comprises a reservoir bottom anti-seepage system and a side slope anti-seepage system; the reservoir bottom anti-seepage system comprises a compacted clay layer, a bentonite waterproof blanket, at least one layer of geomembrane, a rubble layer and a woven geotechnical filter screen which are vertically arranged from bottom to top; the side slope anti-seepage system comprises a compacted clay layer, a bentonite waterproof blanket, at least one layer of geomembrane, a rubble layer and a woven geotechnical filter screen which are obliquely arranged from bottom to top; and geotechnical cloth is laid on the upper layer of the geomembrane, and a high-tensile filter and discharge plate is laid on the upper layer of the geotechnical cloth. The landfill reservoir area anti-seepage system is simple in structure and convenient to construct, compared with a traditional landfill anti-seepage system, resources are saved, the reservoir capacity is increased, meanwhile, the geomembrane in the anti-seepage system can be effectively prevented from being damaged, and the service life is prolonged.

The invention discloses a modeling method for a clean operating room based on a BIM technology, and relates to the technical field of medical purification engineering. The method comprises the following steps: S1, establishing a project, and compiling a project proposal; S2, performing feasibility study on the project, and compiling a feasibility study report; S3, discussing a project scheme; S4,after the discussion is passed, establishing an initial 3D model; S5, checking the model; S6, perfecting the 3D model after the auditing is passed; S7, operating the BIM technology to guide project construction and equipment installation; S8, checking and accepting the project, and completing the project; and S9, auditing the project, and carrying out financial accounting. The modeling method provided by the invention has the characteristics of visualization, good coordination, predictability, simplicity and drawability.

The invention discloses a construction method of an outer wall external thermal insulation key joint. The outer wall external thermal insulation key joint comprises a plinth, a door window, a balcony, a deformation joint, a roof parapet wall, an externally-hung decoration part, a fireproof isolation belt and an outer wall corner. A door and window joint comprises a door and window opening, a side opening, a window lower opening and a window upper opening. A deformation joint comprises an expansion joint flush joint, a corner joint, an anti-seismic settlement joint flush joint, a corner joint, a vertical joint and a horizontal joint. Seam joints of all thermal insulation key joints are caulked through thermal insulation materials and then plugged through sealant, gridding cloth is additionally arranged at the ends of thermal insulation plates of the key joints for reinforcement, a drainage slope is arranged on the structure to prevent water stored on the thermal insulation materials from being damaged, and dripping water is arranged for rainwater diversion to prevent the thermal insulation plates from being damaged. The problems of damage, cracking, hollowing and the like of insulation boards at key joints of a part of outer wall external insulation systems in severe cold areas are effectively solved.