37results about How to "Reliable construction technology" patented technology

The invention discloses a rebar sleeve grouting connection member for a prefabricated assembled type concrete component and a connection method. The rebar sleeve grouting connection member comprises a metal sleeve, a sealing gasket and a grouting structure, the metal sleeve connects an insertion rebar and an embedded rebar, the sealing gasket is arranged at the upper end of the metal sleeve, the grouting structure is formed by a grouting material which is poured in a cavity between the metal sleeve and the insertion rebar, the insertion rebar is a ribbed rebar, and a connection end of the embedded rebar is a threaded connection end; the metal sleeve is divided into an upper sleeve section, a middle connection sleeve section and a lower sleeve section, the upper sleeve section and the middle connection sleeve section form a grouting sleeve, a conical inner cavity is formed inside the upper sleeve section, the inner diameter of the conical inner cavity gradually increases from top to bottom, the lower sleeve section is a threaded connection joint, and a grouting port and an exhaust port are formed in the upper sleeve section. The connection method includes the steps of 1, connecting of the embedded rebar; 2, inserting of the insertion rebar; 3, grouting; and 4, maintaining. The rebar sleeve grouting connection member is reasonable in design, convenient to realize and good in using effect, and rebar connection can be completed simply, conveniently and quickly while reliability in connection is realized.

The invention discloses a steel bar anchoring connection structure and connection method for precast fabricated concrete components. The steel bar anchoring connection structure comprises the first precast concrete component and the second precast concrete component located above the first precast concrete component, and the bottom of the second precast concrete component is provided with a steel bar anchoring preserved hole used for anchoring of a first steel bar pre-embedded in the first precast concrete component; a grouting structure is arranged in a cavity between the steel bar anchoring preserved hole and the first steel bar; the steel bar anchoring preserved hole is located on the outer side of the lower portion of a second steel bar laid out in the second precast concrete component, and multiple grooves are formed in the inner side wall of the steel bar anchoring preserved hole. The steel bar anchoring connection method comprises the first step of precasting of the second precast concrete component, the second step of hoisting of the second precast concrete component and inserting mounting of the first steel bar, the third step of grouting and the fourth step of maintenance. The steel bar anchoring connection structure and connection method for the precast fabricated concrete components are reasonable in design, convenient to achieve, good in use effect, capable of completing the steel bar connection process easily, conveniently and rapidly and reliable in connection.

The invention discloses a desulfurization ash-fly ash self-activated pavement base coarse material. The material comprises, by mass, 88-97% of desulfurization ash and 3-12% of fly ash. A large amount of a desulfurization ash industrial byproduct is used in the invention, so the land and resources and saved, environmental protection is facilitated, the cost is reduced, and the material is simple to construct, and is suitable for building general roads and high-grade road bases and / or subbases.

The invention relates to a completion reoperation blowout control tail tube valve. The completion reoperation blowout control tail tube valve is characterized in that an upper joint and a lower joint are respectively assembled in inner holes of the upper end and the lower end of a coupling to form a valve body shell; an upper valve seat is assembled in a valve body, a step type downward opening blind hole with the small upper end and the large lower end is arranged in an upper valve seat body, the lower end of the blind hole is a screw hole, and a valve seat elastic claw which is in the shape of a lantern framework is arranged on the inner hole wall of the upper portion of the screw hole of the large step hole; a plurality of flow guiding holes communicated with the blind hole are arranged on the upper portion of the upper valve seat; a lower valve seat is in the shape of a hollow step shaft, the lower end of the upper portion of the lower valve seat is assembled in the screw hole of the lower end of the upper valve seat, and the lower end of the lower valve seat is assembled in an inner hole of the lower joint; and a pair of valve clacks is assembled in a hole of the upper portion of the lower valve seat, a resetting spring is assembled between the pair of valve clacks, and center holes of the upper valve seat and the lower valve seat are respectively sealed by valve clack heads of the lower valve clack and the upper valve clack via the resetting spring. The completion reoperation blowout control tail tube valve has functions of well descent blowout control, water transfer injection, counter-circulation well washing and reoperation blowout control, and is simple and reliable in construction process and convenient in field operation.

The invention discloses a granite base material used for preventing corrosion and protecting the veneering. A little of mineral components in the granite base material is reacted with acid, dissolved, washed and dried by acid dipping and washing, then proper antiseptic varnish is selected for carrying out dipping to fill in the porosity of the granite. The processed granite employs a double-layer schindylesis-displaced binding method to ensure that environmental chemical media can not enter the concrete layer, thus enhancing the corrosion resistant capacity of the concrete.

The invention relates to the technical field of dados or similar walls constructed by prefabricated parts and concrete including reinforced concrete at the scene, in particular to an underground diaphragm wall construction method used under the low-clearance condition. The method includes the steps that a plurality of circular holes of the equal diameter are formed in an underground diaphragm wall at first, and the circle centers of the circular holes of the equal diameter are located on the same horizontal line; then a rectangular groove is formed in the underground diaphragm wall, the rectangular groove covers all the circular holes, sections are manufactured on a reinforcement cage, and all the sections of reinforcement cage are integrally manufactured on the same rebar platform; the sections are hoisted into the rectangular groove, and main reinforcements at a groove opening of the rectangular groove are spliced in a straight thread mode; and finally concrete is constructed through a conduit pouring method. According to the method, a machine commonly used in a current market can serve as the construction machine, and there is no need to purchase other devices. Moreover, the construction technology is mature and reliable, construction difficulty is low, ground-to-wall construction under the low-clearance condition is realized, and the blank in the technical field is filled.

The invention relates to an austenitic stainless steel polythionic acid stress corrosion preventing cleaning agent. The austenitic stainless steel polythionic acid stress corrosion preventing cleaningagent is characterized by comprising the following components including, by mass, 1%-12% of carbonate, 2%-10% of amino carboxylate, 1%-10% of polycarboxylate, 1%-15% of ethylene glycol, 1%-10% of sodium polyphosphate, 1%-15% of alkyl sulfate, 0.5%-2.9% of hydroxy ethylenediphosphate, 0.05%-1% of polyether modified polysiloxane and 55%-93% of water. According to the technical scheme, device stresscracking caused by corrosion of polythionic acid in a petrochemical plant on austenitic stainless steel is prevented, and the product is simple and convenient to operate, safe, efficient and environment-friendly.

The invention provides a wall surface safe hanging and sticking technology for ceramic large plates and slabs. The wall surface safe hanging and sticking technology comprises the steps of treating anoriginal basal layer, performing hollowing on the surface of a wall, and treating split positions; performing brushing with an interfacial agent, wherein the interfacial agent is a cement basal plane;performing snapline treatment on the surface of the wall; drilling and nailing the construction surfaces, or using metal construction parts; performing coating with primary coating liquid; performinggluing on the surface of the wall and metal surfaces; and paving the ceramic large plates, and finally, making level with a screeder. The loose basal layer of cement and sand construction in the prior art is improved, no matter whether the surface of the wall is any basal layer, the safe hanging and sticking technology can enable the large plates and the basal plate to be safely and perfectly combined, and the bonding surface is guaranteed to be a stable and firm structure. Specific large plate flexible bonding glue is adopted for construction, so that the technology is safe and stable, the risks of brick falling, fracturing and the like can be avoided to the maximum extent, and the construction safety is improved.

The invention relates to a support structure for a stand column and dual cantilever beams in any combination and a use method of the support structure. The support structure comprises a steel tubular column and dual cantilever beams, wherein a plurality of layers of force bearing rings are arranged on the outer side of the steel tubular column at intervals, a plurality of first reinforcing plates are arranged between the lower side surfaces of the force bearing rings and the outer wall surface of the steel tubular column; the dual cantilever beams include a left half cantilever beam and a right half cantilever beam which are mutually symmetric, arc grooves matched with the outer side of the steel tubular column are arranged in the spliced surfaces of the left half cantilever beam and the right half cantilever beam, the arc grooves are internally provided with force transmission ring sections matched with the force bearing rings, a plurality of second reinforcing plates are arranged between the upper side surfaces of the force transmission ring sections and the inner walls of the arc grooves, the left half cantilever beam and the right half cantilever beam are provided with arc straps for tightly banding the left half cantilever beam and the right half cantilever beam on the steel tubular column, connection end plates are vertically arranged at the two ends of the arc straps, and each connection end plate is provided with a first connection hole for allowing a first connection bolt to pass through. The support structure is large in born force and can be used repeatedly and flexibly.

The invention relates to a support structure for a stand column and dual cantilever beams in any combination and a use method of the support structure. The support structure comprises a steel tubular column and dual cantilever beams, wherein a plurality of layers of force bearing rings are arranged on the outer side of the steel tubular column at intervals, a plurality of first reinforcing plates are arranged between the lower side surfaces of the force bearing rings and the outer wall surface of the steel tubular column; the dual cantilever beams include a left half cantilever beam and a right half cantilever beam which are mutually symmetric, arc grooves matched with the outer side of the steel tubular column are arranged in the spliced surfaces of the left half cantilever beam and the right half cantilever beam, the arc grooves are internally provided with force transmission ring sections matched with the force bearing rings, a plurality of second reinforcing plates are arranged between the upper side surfaces of the force transmission ring sections and the inner walls of the arc grooves, the left half cantilever beam and the right half cantilever beam are provided with arc straps for tightly banding the left half cantilever beam and the right half cantilever beam on the steel tubular column, connection end plates are vertically arranged at the two ends of the arc straps, and each connection end plate is provided with a first connection hole for allowing a first connection bolt to pass through. The support structure is large in born force and can be used repeatedly and flexibly.

The invention relates to a shear wall structure configured with crossed slant internal prestress. The shear wall structure comprises a shear wall body, horizontal steel bars of the shear wall body and vertical steel bars of the shear wall body, wherein a shear wall tooth plate and a prestress tension end anchor tool are respectively arranged at the left upper corner and the right upper corner of the shear wall body, prestress anchoring end anchor tools are respectively arranged at the left lower corner and the right lower corner of the shear wall body, and a crossed slant prestress steel beam and a crossed slant prestress pipeline are arranged between the prestress anchoring end anchor tool and the prestress tension end anchor tool at the opposite corners. A construction method of the structure comprises steps of shear wall template erection and binding of ordinary steel beams of the wall body; crossed slant prestress pipeline arrangement and installation; prestress steel beam penetration and prestress anchor tool installation; shear wall concrete casting and maintenance; and prestress tension, pipeline grouting and end part anchor sealing. The shear wall structure greatly improves the anti-seismic performance of the shear wall.

The invention discloses a method which uses steel slag, mineral slag or electric power plant slag as the materials of a self-hydrating activation type pavement basic layer to activate the potential hydrating activation of the mineral slag or the pozzuolana activation of the electric power plant slag by the corresponding interlocking effect of each waste and the self-hydrating activation of the steel slag to form hydrated C-S-H, C-S-A-H, or C-S-A-F-H, ettringite, and calvital hydration product, form the initial strength of the pavement basic layer and ensure the continuous increasing of the later strength; counted by weight portions, the mixture ratio of each material is as follows: 40 to 65 portions of steel slag, as well as 35 to 60 portions of mineral slag and / or electric power plant slag. The pavement basic layer is a non-cement basic layer with excellent performance, and the preparation method thereof is as follows: the materials after being mixed are transported to a construction field, paved, rolled, and maintained by moisture retention to a regulated age. The invention uses industrial wastes, can save land and resources and reduce the cost, is beneficial to protecting environment, is simple to be constructed, and is suitable for building the basic layers and the foundation layers of common roads and advanced roads.

The invention discloses a steel bar anchor connection structure and connection method of prefabricated assembled concrete components. The steel bar anchor connection structure comprises a first prefabricated concrete component and a second prefabricated concrete component located above the first prefabricated concrete component. The bottom of the component is provided with a steel bar anchoring reserved hole for anchoring the first steel bar embedded in the first prefabricated concrete member; a grouting structure is provided in the cavity between the steel bar anchoring reserved hole and the first steel bar; the steel bar anchoring reserved The hole is located outside the lower part of the second steel bar arranged in the second prefabricated concrete member, and a plurality of grooves are arranged on the inner side wall of the reserved hole for anchoring the steel bar; the method for anchoring and connecting the steel bar includes the steps: 1. Prefabrication of the second prefabricated concrete member; 2. 1. Hoisting of the second precast concrete component and insertion of the first steel bar; 3. Grouting; 4. Maintenance. The invention is reasonable in design, convenient in realization and good in use effect, can simply and quickly complete the steel bar connection process and is reliable in connection.

The invention provides a construction method for repairing a pressure water supply pipe with big diameter without excavating. The method comprises such procedures as clearing scale in the old pipe, laying an inner lining pipe, connecting, inspecting and pressure testing the pipe, etc. The method is characterized in that, the laying of the inner lining pipe is to pass a glass steel & sand pipe and a steel pipe in diameter slightly smaller than that of the former mother pipe into the former mother pipe, a glass steel & sand pipe is used at pipe section without branch, and a steel pipe is used at pipe section needing branch; between the inner lining pipe sections, a joint of sealing and connecting function is provided. The construction method in the invention is relatively simple, the process is mature, economic and practical, and a repaired pipe has the advantages of the small resistance in delivering liquid, the good resistance to corrosion, the long service life and the no water pollution.

The invention relates to a compound waterproof system and a construction technology thereof. The compound waterproof system comprises an inner base layer, a compound waterproof layer and an outside protective layer, wherein the inner base layer is formed by a non-solidifying waterproof gluing which has double features that the non-solidifying waterproof gluing is in a solid state after contacting with air at normal temperature and a flexible glue bonding state can be kept under sealed anaerobic conditions, the compound waterproof layer is formed by an outer strengthening layer formed by a high-performance synthetic rubber asphalt waterproof roll material composed of an upper covering layer, a lower covering layer and a middle modified asphalt gluing layer, and the outside protective layer is composed of polyethylene film or non-woven fabrics and fine stone concrete and steel bar mesh. The non-solidifying waterproof gluing is directly coated on a base surface, the waterproof roll material is covered and glued on the outer surface of the inner base layer, and the edge contacting parts and the surrounding edge parts of the waterproof roll material are all coated and sealed by the non-solidifying waterproof gluing so that the whole inner of the compound waterproof layer is in a sealed state. Adopting the setup of clod construction, the compound waterproof system has the advantages of reasonable components, scientific structure and reliable construction technology, reaches active technique effects of long-time no leakage for buildings, and has very strong practical applicability and commendable market application prospect.

The invention discloses a desulfurization ash-fly ash self-activated pavement base coarse material. The material comprises, by mass, 88-97% of desulfurization ash and 3-12% of fly ash. A large amount of a desulfurization ash industrial byproduct is used in the invention, so the land and resources and saved, environmental protection is facilitated, the cost is reduced, and the material is simple to construct, and is suitable for building general roads and high-grade road bases and / or subbases.