32results about How to "Simple and flexible construction" patented technology

The invention discloses a high-tensile-strength pervious concrete sandwich structure and a preparation method thereof. The high-tensile-strength pervious concrete sandwich structure comprises a pervious concrete structure main body, a geogrid reinforced layer and bonding layers, wherein one geogrid reinforced layer or a plurality of geogrid reinforced layers arranged at intervals are laid in a tensile area in the pervious concrete structure main body; the upper and lower surfaces of each geogrid reinforced layer are coated with the bonding layers; a fibrous material is distributed in the pervious concrete structure main body; and the grid gaps of each geogrid reinforced layer are filled with pervious concrete in which the fibrous material is distributed. According to the invention, the tensile strength of the pervious concrete sandwich structure is improved through combined action of the geogrid reinforced layer, the bonding layers, the fibrous material and the pervious concrete; in addition, the pervious concrete sandwich structure of the invention is simple and flexible in construction and cost-effective, and is of great significance to expansion of the application range of the pervious concrete and promotion of the construction of sponge cities in China.

The invention discloses a monitoring system for bad sections of track branching, which includes a geomagnetic sensor, a branch control line and a data and monitoring center. Inside, the monitoring system also includes laser detectors, laser night vision devices and wireless data processors. The laser detectors, laser night vision devices and geomagnetic sensors are respectively connected to the wireless data processor to transmit data through wireless signals. The wireless data processor There is an electric control switch inside, and the electric control switch is electrically connected with the shunt control line. The wireless data processor is equipped with a wireless data receiving end and a wireless data transmitting end to receive geomagnetic sensors, laser detectors and laser night vision devices and send signals to For the monitoring center, the present invention has the characteristics of multiple monitoring methods to comprehensively monitor the bad section of the branch, adopts wireless transmission and receiving technology, is convenient for construction and maintenance, simple and practical in operation, and can effectively solve the problem of bad branch.

The invention relates to a construction method for transversely strengthening a railway bridge by utilizing a prestressing steel structure. By adopting the prestressing steel structure for transversely strengthening, the defect that the traditional method affects the normal operation of a train is overcome; and by galvanizing steel members, filling a potting material and a structural adhesive to form three-layer anti-corrosive protection, smearing neutral grease on anchorage devices at two ends, and installing a protective nut cap, the whole structural system is enabled to have good durability. The invention has flexible, simple, and convenient construction and is a high-efficiency construction method.

The invention provides a construction device for a precast surface and cast-in-place core filler wall. The construction device has the advantages that a pressure plate (4) as a pressure applying device has the characteristics of enough rigidity, high strength and the like, and a good pre-pressure effect is achieved by arranging stiffening ribs (10) or stay cords (9) and force applying keys (11) on the pressure plate (4). The entire pressure applying device is simple to install and dismantle, and flexible in configuration, and has a stress self-balancing function. The pressure plate (4), the stiffening ribs (10), the stay cords (9), the force applying keys (11) and the like are massively produced by a factory in a prefabricating manner, the installation is simplified, and the work efficiency is enhanced. As to large-area construction of the filler wall with large thickness and height, the comprehensive economic indexes and the construction duration of the construction device are superior to those of the prior art.

The invention discloses a seamless bridge expansion joint based on a phosphorus-magnesium material. The seamless bridge expansion joint comprises a pavement layer and a cast-in-place concrete layer, wherein a phosphorus-magnesium material interface layer, a thin steel plate, transverse rebar and vertical rebar are arranged between the pavement layer and the cast-in-place concrete layer, the transverse rebar and the vertical rebar are arranged at the inner side of the phosphorus-magnesium material interface layer, the thin steel plate is arranged on a crack crevice of the cast-in-place concretelayer, and the gaps among the transverse rebar, the pavement layer, the phosphorus-magnesium material interface layer, the cast-in-place concrete layer and the thin steel plate are filled with a phosphorus magnesium mortar layer. The invention further discloses a construction method of the seamless bridge expansion joint based on the phosphorus-magnesium material. The seamless bridge expansion joint based on the phosphorus-magnesium material has the advantages that the flexibility is good, the high-temperature stability is high, the low-temperature crack resistance is excellent, the construction is simple, the commissioning time is short, the early strength is high, the repair and maintenance are simple, the durability is strong, the water resistance and adhesion are strong, the operationand running are comfortable and steady, the service life is long, the bridge expansion joint is simple and compact, a mounting notch is shallow, an anchoring system is not needed, the combination with the ground face is tight, flat and smooth, and the bridge expansion joint is suitable for the installation or repair and maintenance various bridge expansion joints.

The invention provides an L-shaped column structure and a house. The L-shaped column structure comprises a column arranged on a foundation, and wallboards, wherein each wallboard comprises a first panel, a thermal insulation layer and a second panel which are sequentially arranged, the length of each first panel is larger than that of the corresponding second panel, the width of each first panel is larger than that of the corresponding second panel, and the width of each thermal insulation layer is smaller than that of the corresponding second panel; and the number of the wallboards is two, the first panels, the thermal insulation layers and the second panels of the two wallboards form a column space, and the column is positioned in the column space. The L-shaped column structure and the house are good in integrity, formwork erection and demoulding are not needed, the construction period is shortened, the construction cost is reduced, and cold (hot) bridges are prevented.

The invention relates to the technical field of observation well construction, in particular to a small-diameter observation well shaped steel formwork pouring construction method, which includes the following steps: installing formwork group supports, chiseling and cleaning foundation concrete, installing steel cages, installing inner steel formwork, and installing outer steel formwork. Steel formwork installation, formwork group correction, concrete pouring, concrete curing, formwork removal, which reduces the construction difficulty, shortens the construction period, ensures the construction quality, can save a lot of supporting steel pipes, fasteners and other materials, low construction cost and high construction accuracy , The material can be used in continuous circulation, easy to install, high strength, high rigidity, small deformation, good appearance quality, easy to disassemble in a small space, reduced labor intensity, improved construction mechanization level, and reduced labor use.

The invention relates to a water-reactive one-component environment-friendly polyurethane grouting resin and a production method. The technical solution adopted is to use non-TDI polymer as the main resin component, supplemented by environmentally friendly high-boiling point diluents, non-PAEs plasticizers, silicone foam stabilizers, balanced foaming gel catalysts, flame retardants formulated. The invention provides a water-inverse one-component environment-friendly polyurethane grouting resin material which does not contain TDI free monomer and PAEs type plasticizer and can be transported as general cargo. In the grouting construction project, the catalyst can be added reasonably according to the needs, the foaming speed can be adjusted, and the construction is flexible and simple; the hydrophobic closed-cell foam structure formed by curing has high compressive strength, and has an excellent sealing effect on the cracks of the building structure, and It has a long-term sealing effect on the leakage of water bodies in the cracks.

The invention discloses a waterborne bi-component antibacterial and antifouling epoxy sealant and a preparation method thereof. The epoxy sealant is prepared from a component A and a component B according to the mass ratio of 1 to (0.8 to 1.2), wherein the component A is prepared from the following raw materials in parts by mass: 100 to 150 parts of epoxy resin emulsion, 5 to 20 parts of pigment,1 to 5 parts of thixotropic agent, 0.1 to 0.5 part of defoaming agent and 0.1 to 0.5 part of leveling agent; the component B is prepared from the following raw materials in parts by mass: 15 to 25 parts of epoxy resin, 10 to 20 parts of polyether amine, 15 to 40 parts of amine compounds, 10 to 20 parts of antibacterial antifouling additive, 1 to 5 parts of thixotropic agent and 60 to 100 parts ofwater. The preparation method is simple, materials are mixed first to obtain the component A and the component B, and when used, the component A and the component B are mixed uniformly. The epoxy sealant disclosed by the invention has the advantages of high strength, low shrinkage, strong adhesiveness, high brightness, attractive appearance, long lasting time, good antibacterial and antifungal effect, good hydrophobic and antifouling effect, easy cleaning, low VOC content and safety and environmental protection.