34results about How to "Easy construction control" patented technology

The invention relates to a jack symmetric precompaction construction method for hanging basket girders for bridge hanging basket suspension casting construction. The method comprises the following ten steps: 1, selecting a precompaction field; 2, assembling the hanging basket girders; 3, symmetrically putting the two hanging basket girders on four wood pads; 4, prefixing rear anchor points; 5, assembling a middle fulcrum point block; 6, mounting a hanging basket loading system; 7, measuring the relative position size of the two hanging basket girders before loading; 8, loading and measuring the relative position size of the two hanging basket girders; 9, unloading and measuring the relative position size of the two hanging basket girders; and 10, calculating and analyzing according to measurement data. The method has the advantages that the precompaction on bridge can be substituted, thus heavy workload for suspending sandbags can be avoided; the precompaction work efficiency is effectively quickened so as to save massive precompaction construction time; load can be applied by the jack, and precompaction data can be accurately controlled; and the precompaction process and observation process of the hanging basket are performed in the field with high safety and strong controllability.

The invention discloses a method for installing a steel box arch rib buckle by the hanging method. The method is characterized in that: the construction method is divided into three stages, namely a lifting stage, a positioning stage, a buckle conversion stage and a secondary stretching stage; the steel box arch rib buckle mounting method comprises the following steps: The method has clear division of each stage, clear stress of each stage of the buckling and hanging system structure, and convenient construction control of various operations, which lays a foundation for ensuring the ideal goalof the bridge state. At the same time, the quick locking device used in the construction method can be used for temporary consolidation, the operation is simple and convenient, the connection is fast, the connection strength is guaranteed, the connection can be recycled after simple treatment, and has certain installation deviation adaptability. Therefore, it can be said that the construction method designed by the invention has a relatively prominent embodiment in technology, quality, safety and economy, and is particularly suitable for popularizing and applying in the field, and has a verybroad market prospect.

The invention discloses a flocculating agent for cement high pressure jet grouting and preparation method and application thereof. The flocculating agent is composed of konjac glucomannan, carbonate, rheological agent, dispersing agent, early strength agent and water by uniform stirring, distillation and smashing, and the weight ratio of the konjac glucomannan, carbonate, rheological agent, dispersing agent and early strength agent is 35-45: 22-28: 8-12: 13-17: 8-12; the preparation thereof includes the steps: raw material weighing and fully dissolution, mixed slurry confecting and distillation, spray drying, smashing and sieving; and the application thereof includes the steps: admixture determination, flocculating agent cement slurry confecting and slurry grouting completing by utilizinghigh pressure jet grouting process. The invention has simple preparation step, low cost and simple and convenient use and has no harm on human body, application in high pressure jet grouting construction is simple and convenient and processing effect is good, and the problems that pure cement slurry has poor adhesion, high cement slurry drain, high construction cost and influence on construction progress existed in high pressure jet impermeable grouting can be solved.

The invention relates to a method for constructing a novel mini-pile, which comprises the following steps: step one, using a drilling machine to form drill holes of which the diameter is between 0.25 and 0.4 meter on a groundwork; step two, pouring clear water in the drill holes through a hollow drill pipe of the drilling machine to perform a primary hole cleaning; step three, lifting out the drill pipe and putting reinforcing cages and pouring guide tubes into the drill holes; step four, pouring clear water into the drill holes through the pouring guide tubes to perform a secondary hole cleaning; and step five, pouring prepared fine gravel concrete into the drill holes through the pouring guide tubes until the fine gravel concrete pours out of the drilling holes so as to form the mini-pile of which the diameter is between 0.25 and 0.4 meter. The method adopts a mode of directly pouring the fine gravel concrete to form the mini-pile, thereby saving pile-making materials, facilitating engineering budget and final account and benefiting the popularization and the application of the mini-pile; besides, the method is convenient to control the pile body strength of the mini-pile so as to be advantageous for improving the pile body strength and the bearing capacity of the mini-pile.

The invention relates to an automatic spraying pipeline system, which can reduce the installation difficulty of the pipeline and independently carry out construction with an easy control over the construction, thus guaranteeing the construction period of the system and the installation quality of the pipeline system. The invention also provides an installation method of the automatic spraying pipeline system. The automatic spraying pipeline system comprises a main pipeline, a stem pipeline, a fire-fighting hose, fittings fixed on a keel and a shower nozzle, and is characterized in that: the main pipeline and the stem pipeline are arranged inside a roof truss layer above a static pressure box; one end of the fire-fighting hose is connected with the stem pipeline and the other end is communicated with a branch pipeline through bends and short tubes; the short tubes pass through the roof of the static pressure box; the other end of the branch pipeline is connected and communicated with the shower nozzle fixed on the keel. When in installation, the main pipeline and the stem pipeline inside the roof truss layer above the static pressure box are installed at a certain place; the fire-fighting hose is installed with one end being connected with the stem pipeline; the stem pipeline is installed at the place and is communicated with the other end of the fire-fighting hose through the short tubes and the bends; connectors fixed on the keel are installed and a FFU keel is connected with the branch pipeline through the connectors of the keel; the air pressure and the water pressure of regional pipelines are tested; the shower nozzle is installed.

The invention relates to the technical field of concrete admixtures and in particular relates to an unsaturated polyether monomer, a preparation method and application of the unsaturated polyether monomer, and a polymer prepared thereby. According to the structural design of introducing glycidyl ether into hydrophobic blocks, a certain amount of hydrophobic units and hydrophobic groups are introduced and controlled in a carboxylic copolymer molecular structure, so that the viscidity of a cement-based material is reduced under the action of a water reducing agent, and the dispersion property of the water reducing agent and slump retaining performance are improved. The unsaturated polyether monomer disclosed by the invention comprises multiple polymerization units, and has high double bond retention rate and excellent polymerization activity; by controlling the reaction conditions, the main chain and side chains of the product can be subjected to accurate design at different positions and lengths, so that the prepared water reducing agent is rich in product structure and is slightly influenced by factors such as high-temperature environment change, material quality fluctuation and the like, the concrete workability and high slump retaining performance are maintained, and convenience is brought to production and transportation and construction control.

The invention discloses a step-shaped concrete casting mold assembly and a cast-in-situ construction method, comprising: cleaning the base surface → supporting the side form → pouring the concrete at the lower part of the step → laying a movable die and clamping → pouring the upper part of the step Concrete→Remove the movable die→Tighten the surface of the lower part of the steps→Tighten the surface of the upper part→Conservation→Remove the side formwork and continue the maintenance. Since the present invention adopts the dynamic operation process of "installation later and removal first" of the movable die and the form support method that the 45° contact surface between the movable die and the upper inner mold can be combined and separated, the inner side of the cast-in-place concrete step is completely solved. There is a problem with stencil imprints on the surface. The overall structure of the steps casted by the present invention is complete, without cold joints, and the internal quality meets the design standards; the surface has no template marks, no cracks, no bubbles or spots, pockmarks, etc., and the appearance quality meets the requirements of the specifications, and can be applied to various The cast-in-place stepped concrete project has significant practical significance and good social benefits.

The invention relates to the technical field of building materials, in particular to a self-compacting concrete prepared by using modified ceramic polishing powder and a preparation method thereof. The self-compacting concrete includes the following raw materials: cement, modified ceramic polishing powder, fly ash, coarse aggregate, artificial sand, water and polycarboxylate superplasticizer; the modified ceramic polishing powder is made of ceramic polishing powder The powder is obtained by soaking treatment in coupling agent solution and soaking treatment in coupling agent solution added with cellulose ether and organosilicon antifoaming agent in turn; the specific surface area of ​​the ceramic polishing fine powder is 800-830 m 2 / kg. The self-compacting concrete mixed with modified ceramic polishing powder can effectively improve the compactness of the concrete, and can also improve the fluidity and water retention of the self-compacting concrete. It can effectively solve the problem of shortage of mineral admixture resources.