32results about How to "Fast construction operation" patented technology

The invention discloses a large-altitude-difference variable-section concrete structure construction joint and a construction method thereof. The construction joint is used for construction of a large-altitude-difference variable-section concrete structure, and comprises an upper layer structure and a lower layer structure. The upper layer structure and the lower layer structure are respectively provided with staggered edges, and vertical inserting ribs are arranged between the staggered edges of the upper layer structure and the staggered edges of the lower layer structure. The construction method comprises the steps that concrete is poured to the lower layer structure and poured to the bottoms of the openings of the staggered edges, the vertical inserting ribs are horizontally and evenly embedded in the lower layer structure, staggered edge opening hanging formworks are arranged on the lower layer structure, concrete is poured to staggered edge openings, and construction of the large-altitude-difference variable-section concrete structure construction joint is completed. The relative sliding problem of structures at the large-altitude-difference variable-section concrete structure construction joint can be solved, the construction joint arranging method is simple, and construction operation is convenient and quick; concrete is poured twice, the upper layer structure and the lower layer structure can be constructed in a flow construction mode, and cracks due to the fact that the thickness of concrete poured one time is too large are effectively avoided.

The invention discloses a method for mineralizing and reinforcing clay roadbeds by using carbon-fixing bacteria, which comprises the following steps: A. cultivating Streptomyces luteus bacteria to obtain bacterial liquid; B. first pouring quartz sand into the clay constituting the roadbed and stirring , then pour the mixture of Streptomyces luteus bacterial liquid, slaked lime and foamy carbon dioxide into the mixture of clay and quartz sand and fully stir; The method for reinforcing the clay subgrade provided by the invention is more environmentally friendly, more convenient and faster to operate, and has better reinforcing effect.

The invention discloses a multifunctional furring brick which consists of a finishing coat, a multifunctional layer, and a bonding layer. The multifunctional layer is manufactured and molded at a time with multifunctional liquid and foaming equipment. The finishing coat and the bonding layer are manufactured on the upper face and the lower face of the multifunctional layer respectively. The multifunctional liquid adopts polyfunctionality polyether glycol, polyester polyol prepolymer, vegetable oil polyhydric alcohol and hydramine as initiators, and polyether glycol, a fire retardant, a foam uniformizing agent, a foaming agent, postassium acetate, triethylenediamine, acetal mixture, a delaying catalyst, an ultraviolet absorbent and isocyanate as raw materials. The finishing coat can be an ordinary finishing coat, a fashionable finishing coat, a luxurious finishing coat or a fireproof finishing coat as required. The multifunctional furring brick has the characteristics of energy conservation, water resistance, decoration and portability. Wet land construction with the multifunctional furring brick can be carried out as the construction with ceramic mosaic and porcelain facing bricks, and the multifunctional furring brick can also be cast with concrete in a molding board. In addition, the multifunctional furring brick can also be bonded with an adhesive. The process is simple andoperation is quick. The multifunctional furring brick integrates a plurality of functions, such as decoration, thermal insulation, water resistance and imperviousness, antisepsis, sound insulation, light weight, hardness and so on.

The invention relates to a pre-splitting blasting method for a nuclear island negative excavation ring gallery, and belongs to the technical field of earthwork construction methods. The steps of the method are: digging down at the selected location according to the elevation of the center of the nuclear island, and reserving a reserved layer; drilling holes at equal intervals along the inner and outer circumferences of the ring corridor; installing flexible materials at the bottom of the holes as a buffer Cushion layer; in the hole where the cushion layer is installed and the hole is left with a blockage depth, the charge is divided into three sections, the bottom is the reinforced charge section, the top is the weakened charge section, and the middle is the normal charge section; after the explosive is loaded , the orifice plugging depth is filled with conventional materials; detonation forms cracks along the inner and outer circumferences of the ring corridor. The invention can form ideal inner and outer circumferential cracks in the ring corridor at the predetermined position of the rock foundation, and then can carry out the main explosion for the purpose of removing the rock in the ring corridor. Therefore, the construction operation of the negative excavation ring corridor of the nuclear island can be completed quickly and with high quality.

The invention provides a bridge maintenance vehicle and a method for avoiding a bridge pier by a maintenance platform, and belongs to the field of bridge detection and maintenance construction. Cantilever hoisting devices (5) are arranged at a plurality of points on the two sides of a bridge floor, wherein a guide rope (3) connected with the maintenance platform (1) is pulled by an unmanned aerialvehicle (4) to transversely penetrate through the lower part of the bottom face of a bridge; hoisting ropes (2) are pulled to the cantilever hoisting devices (5); the operation of avoiding the bridgepier is achieved through the cooperative operation mode that a plurality of hoisting ropes (2) are pulled and rotated to be positioned on the maintenance platform (1) on the bottom face of the bridge; the movement of the maintenance platform (1) can be monitored by the unmanned aerial vehicle (4); the operation is visual and convenient, the multiple devices are cooperatively operated; the construction efficiency is high; the auxiliary time is short; the construction time for avoiding the bridge pier can be greatly shortened; the number of constructors is small; and the construction cost is reduced. The method is particularly suitable for conducting bridge pier avoiding construction operation on the bridge maintenance vehicle and the maintenance platform on the bridge with the large bridgefloor height, the large bridge bottom slope, the severe river channel condition, the poor bridge bottom construction environment and the poor condition.

The invention discloses a negative excavation blasting structure and method for a nuclear island corridor foundation pit. A blasting area of a corridor foundation pit is defined by an inner ring line and an outer ring line; the blasting area of the corridor foundation pit is divided into a plurality of blasting sections; a plurality of first pre-splitting holes are formed in the inner ring line at intervals, and a plurality of second pre-splitting holes are formed in the outer ring line at intervals; at least one row of first slotting holes are formed between every two adjacent blasting intervals; a plurality of first main blasting holes are formed in each blasting section at intervals; and the first pre-splitting holes, the second pre-splitting holes, the first slotting holes, second slotting holes and the first main blasting holes are each provided with a charging section and a filling section. Ideal inner and outer circumferential cracks of the corridor can be formed at a preset position of a rock foundation, then main explosion with the purpose of removing rock in the corridor can be carried out, meanwhile, corresponding reasonable measures are taken in consideration of technical requirements such as vibration and allowance, so that the construction operation of negative excavation of a nuclear island corridor foundation pit can be quickly completed with high quality.

An anti-wind and wave device for offshore piles comprises a rubber disc body, an inflatable supporting device inside the disc body, a circular thin-walled steel hoop, and screws. The rubber disc body includes a rubber upper plate and a rubber lower plate, and the lower surface of the rubber upper plate ring-shaped edge and the rubber lower plate ring-shaped edge upper surface are prefabricated as a whole; the rubber plate body air chamber inflation matching device includes Inflatable nozzle, octagonal screw cap, air guide tube, gas valve switch, air pressure gauge, inflatable air pump. The advantage of this patent is that: when the pile body undergoes a large displacement and deformation under the action of horizontal load, the lower surface of the plate body contacts with the silt soil to generate a vacuum negative pressure effect, which stabilizes the horizontal load resistance of high-pile marine buildings Compared with other methods, the construction operation is quick and the project cost is low.

The invention discloses a basic ring and its processing and construction methods. The foundation ring is used to connect the tower and the foundation, and includes a ring body, a top flange, a bottom flange, and several steel bar connectors. The upper end of the ring body is fixedly connected to the top flange, and the tower is fixedly installed through the top flange; the lower end of the ring body is fixedly connected to the bottom flange, and a number of steel bar connectors are fixed on the ring body wall of the ring body for connecting with the Reinforcement screw connection is fixed. During the foundation pouring process, the bottom flange, the ring body connected to the bottom flange, the steel bar connector on the ring body, and the steel bars connected by the steel bar connector are buried in the concrete, and finally become a whole with the foundation, realizing the foundation Connection of the ring to the foundation, anchoring the foundation ring. The foundation ring provided by the invention avoids the opening of the ring body, makes the connection operation between the ring body and the steel bar simple and efficient, and facilitates the repair and maintenance of the foundation ring and the foundation.

The invention discloses a construction joint of a concrete structure with a large height difference and variable cross-section and a construction method thereof, which is used for the construction of a concrete structure with a large height difference and variable cross-section, and comprises an upper structure and a lower structure, and the upper structure and the lower structure are respectively provided with horse teeth , There are vertical ribs between the upper structure of the horse teeth and the lower structure of the horse teeth. The construction method of the present invention includes: pouring concrete into the lower structure, pouring the concrete to the bottom of the Ma Ya Cha Cha mouth; Yachachakou concrete; construction joint construction of large height difference variable cross-section concrete structure completed. The invention can solve the problem of relative slippage of the structure at the construction joint of the concrete structure with large height difference and variable cross-section; the construction joint setting method is simple, and the construction operation is convenient and fast; the concrete is poured twice, and the upper structure and the lower structure can be constructed in flowing water, effectively Avoid cracks caused by excessive thickness of poured concrete at one time.