47results about How to "Reduce construction difficulties" patented technology

The invention belongs to the technical field of construction engineering and particularly relates to a prefabricated assembly type strip foundation and a construction technology. The prefabricated assembly type strip foundation is characterized in that the prefabricated assembly type strip foundation comprises a longitudinal rebar; a plurality of hooping ribs are wound and fixed outside the longitudinal rebar; and the longitudinal rebar and the hooping ribs serve as a whole stress body through concrete pouring. The prefabricated assembly type strip foundation has the beneficial effects that factory prefabricated production can be achieved, quality control is convenient, construction difficulty caused by outdoor weather changes is avoided, field installation is safe, fast and convenient, energy conservation and environment protection are achieved, labor and time are saved, and the assembly efficiency is high.

The invention belongs to the technical field of fracturing transformation of oil and gas wells, in particular to a blasting start-up sliding sleeve designed for multi-layer fracturing transformation of oil and gas wells, comprising an upper joint and a lower joint connected by threads, and the pipe wall of the upper joint is evenly spaced along the circumferential direction. There are multiple vertical strip-shaped fracturing ports, a piston is installed inside the upper joint, and the piston blocks the fracturing port; a bursting disc holder is installed on the upper pipe wall of the upper joint, and the bursting disc holder passes through On the pipe wall of the upper joint, the end of the bursting disc holder located inside the upper joint is equipped with a bursting disc. The bursting disc is in the shape of a disc with the same inner diameter as the upper joint, forming a spacer in the upper joint to block the upper joint. The bursting disc is located on the upper part of the piston. This kind of blasting starting sliding sleeve can realize the starting sliding sleeve of the first stage of fracturing during the multi-layer and multi-stage fracturing construction of the casing sliding sleeve, eliminating the perforation operation, improving the construction efficiency and saving construction. Reduce costs and reduce construction difficulties and risks.

The invention discloses a cooling shaft of an underground nuclear power plant, which comprises a frustum-shaped vertical shaft body located in a mountain body with an upper opening. There is an air supply system for conveying cold air. Above the air supply system is a hot water distribution system connected to the condenser of the steam turbine generator. The hot water distribution system sprays the input hot water. In the middle of the inner cavity of the shaft body, there is a The cooling and ventilation corridor communicated with the outside of the ground surface, and the upper part of the inner cavity of the shaft body is provided with a demister. The invention uses the vertical shaft structure to replace the cooling tower structure, and through the principle of spray cooling, the hot water entering the cooling shaft forms atomized particles, which enhances the process of hot water evaporation and heat absorption, and forms a spiral whirlwind in the cooling shaft through the air supply system, strengthening heat exchange. At the same time, the setting of water spray filler is discarded, and the structure of the cooling shaft is greatly reduced, which effectively reduces the construction and operation costs.

The invention relates to the technical field of power transmission, and particularly relates to a construction method of an inclined column type corrosion resistant foundation for a power line iron tower in a salt lake area. The construction method comprises the following steps of: 1) a foundation treating step; 2) a glass fiber reinforced plastic corrosion-resistant layer mounting step; 3) a steel foundation binding step; 4) a glass fiber reinforced plastic template supporting step; 5) a concreting step; 6) a glass fiber reinforced plastic sealing step; 7) a concrete maintaining and support structure removing step; and 8) a foundation pit backfilling step. The method provided by the invention is characterized in that compared with the conventional rigid straight column foundation, the center slope of the flexible-board inclined column type foundation is the same as the slope of major materials of tower legs of an upper power transmission line structure; as a result, the horizontal acting force on the top surface of the foundation and the bending moment acting on a foundation base plate are reduced, the integrated force condition of a main column and the base plate of the foundation is greatly improved, the lateral antidumping and anti-sliding stability of the foundation is enhanced, the designed dimension of the foundation is reduced and 5%-15% of concrete material quantity for a main foundation body is saved; and therefore, the economical efficiency is quite obvious; and the glass fiber reinforced plastic covered concrete foundation improves the corrosion resistance of the salt lake region. The schematic diagram of the construction method is shown in the following figure.

The invention discloses a porous plum-blossom-shaped pipe, and belongs to the technical field of high-molecular materials. The raw materials comprises the following substances in parts by weight: 45-55 parts of high-density polyethylene resin powder, 18-22 parts of low-density polyethylene resin powder, 4.5-5.5 parts of high-strength glass fiber, 0.45-0.55 parts of a property modification stabilizer, and 9-11 parts of a property modification filling material. The plum-blossom-shaped pipe is relatively smooth in inner wall, cables can directly pass through the pipe without using other utensils, and time and labor are saved; the plum-blossom-shaped pipe is resistant to acids and bases, resistant to salts and alkalis, resistant to corrosion, resistant to oxidation, resistant to ageing, suitable in structure, high in usage value, long in service life, green and environment-friendly, and helps to improve the construction speed and substantially reduce the construction cost of an engineering unit.

The invention relates to building construction, in particular to a pre-embedded plate for a steel pipe column pedestal by hole pile method and a construction method thereof. The pre-embedded pedestal of the steel pipe column of the hole pile method includes a plurality of positioning rods vertically arranged on the bottom longitudinal beam, and the positioning rods are welded on the main reinforcement of the bottom longitudinal beam; the embedded board is horizontally arranged on the positioning rods; On the pre-embedded plate, a plurality of positioning plates are arranged on a circle whose radius is the sum of the steel pipe column radius plus the design reserved value. The pre-embedded pedestal of the bottom longitudinal beam of the present invention has the function of positioning and limiting the steel pipe column, and the installation and construction of the bottom longitudinal beam pedestal can reduce the dependence on the conventional positioner, reduce the difficulty of setting the positioner, and improve the steel pipe. Column mounting accuracy.