54results about How to "Speed ​​up on-site construction progress" patented technology

The invention relates to a breakdown failure positioning method of a GIS on-site voltage withstand test based on a vibration test. A plurality of vibration sensors are distributed on a GIS outer shell within a test range to carry out monitoring, the vibration signals generated when a GIS breakdown failure occurs are collected, and failure positioning is carried out by comparing the amplitude difference and time difference between monitoring point signals. Compared with the prior art, the breakdown failure positioning method of the GIS on-site voltage withstand test based on the vibration test has the advantages of being high in test accuracy and saving the trouble of large-area detachment examination by achieving failure positioning through the vibration test, thereby effectively improving the on-site construction progress, and meanwhile eliminating quality hidden risks caused by large-area detachment.

The invention relates to a light energy-saving large module combined-type external wall body and a preparation method thereof. The wall body board is divided into two blocks for manufacture; a technical column is added in the middle; the 10 mm that depth minus width is the clearance for wall body installation and alignment; the total thickness of the wall body is 250 mm; the wall body is filled with light thermal insulating mortar; the external wall body is formed by a strengthening surface layer of two external wall surfaces, a double-layer thermal insulation board nested on the inner side of the surface layer, and a layer of cavity left in the middle; and a steel mesh is arranged in the strengthening surface layer of the two external wall surfaces, and is positioned on the surface layer by a retaining frame. The external wall body and the preparation method fully use the air layer, enhance the thermal insulation effect, save the heat insulating material, and prevent the phenomenon of rainwater infiltration in the wall body due to the cracks of the external wall. The air chamber in the thermal insulation board accounts for 30 percent of the sectional area of the thermal insulation board; the material can be saved by 30 percent by using the polystyrene foam as the heat insulating material; and the material can be saved by 20 percent by using the plastic board as the heat insulating material.

The invention discloses a safety and wind-resistant metal roofing structure system including a roofing system, a main steel structure and a roof decoration structure. The roofing system is connected with the main steel structure by sandalwood strips, wherein the sandalwood strips include main sandalwood strips and auxiliary sandalwood strips. The main sandalwood strips are arranged on the upper portion of the main steel structure, and are connected with the main steel structure by connectors. Sleeved pipes are arranged on the main sandalwood strips, and long circular holes are formed in the main sandalwood strips. The sleeved pipes penetrate the long circular holes, and are connected with the main sandalwood strips by bolt assemblies. The sleeved pipes and the main sandalwood strips are positioned by lug plates. Cushion plates are arranged between the bolt assemblies and the long circular holes, and the sleeved pipes are connected with the main sandalwood strips by connecting steel plates. The auxiliary sandalwood strips are connected with the main sandalwood strips by connecting plates. The roof decoration structure is arranged on the upper portion of the roofing system, and is connected with the roofing system by U-shaped adapters. The safety and wind-resistant metal roofing structure system is provided with the sleeved pipes and the lug plates, and the connection between thesleeved pipes and the main sandalwood strips is realized by the bolt assemblies penetrate through the long circular holes, so that the problem of flexibility of the sandalwood strips caused by temperature difference is solved well.

The invention belongs to the technical field of construction of tunnel engineering, and particularly relates to a concrete longitudinally-continuous pouring construction method for a tunnel secondarylining vault. The lining quality problems that the arch part concrete cannot be densely packed, the secondary lining is insufficient in thickness, and the back is empty and not dense are solved; the method comprises the following steps that S100, measurement lofting is conducted; S200, a secondary lining trolley is travelled, positioned and reinforced; and S300, a longitudinally-continuous pouringtrolley is in place; S400, secondary lining side wall concrete is poured; and S500, after window-by-window layering pouring and vibrating is finished on the part of the secondary lining side wall concrete, a concrete pump pipe connector is replaced and connected with the longitudinally-continuous pouring trolley, performance detection is conducted on the field secondary lining arch concrete, andthe in-formwork concrete slump degree is required to be controlled to be 170 mm-190 mm; S600, a concrete conveying pump is started; S700, the secondary lining arch concrete is longitudinally and continuously poured in a retreating mode; S800, a station exits and a pipeline is cleaned, and the pouring is ended; and S900, RPC formwork grouting is conducted.

The invention relates to the technical field of infrastructure construction, in particular to a guide device for assembling and positioning a prefabricated polygonal bridge pier and a design method. The guide device comprises a plurality of position limiting plate assemblies, wherein the position limiting plate assemblies are connected with the bridge pier to form a guide surface; each position limiting plate is at least connected with two positioning pull buckle assemblies and two positioning top buckle assemblies; one end of each positioning pull buckle assembly and one end of the corresponding positioning top buckle assembly are connected with the corresponding position limiting plate through a screw bolt; and the other end of each positioning pull buckle assembly and the other end of the corresponding positioning top buckle assembly are connected with a corresponding embedded steel bar. The guide device and the design method have the advantages that assembly type components are used and combined to form a whole; field transportation and movement are convenient; the embedded steel bars of the structure per se are used for positioning and force bearing; the installation is convenient; the device is light and ingenious; guide hole passages formed by the position limiting plates in a vertical curved surface form have the big upper side and the small lower side, the bridge pierpositioning deviation in the construction process can be allowed, and the construction difficulty is reduced; and the plates are mutually combined, position limiting holes are transversely adjustable,and adaptability to different types of polygonal prefabricated bridge piers can be realized.

The invention discloses a buried heat storage tank which comprises a tank body. The tank body is composed of a tank body wall, a tank body thermal insulation top cover and a tank body thermal insulation bottom plate. A thermal insulation pipe is adhered to the inner wall of the tank body, the thermal insulation pipe is arranged on the inner wall of the tank body in surrounding mode, a heat exchanger is installed in the tank body, a radiator and a heating device are fixedly installed in the tank body, and the thermal insulation pipe is composed of a polyvinyl chloride (PVC) pipe and polyurethane materials filled in the PVC pipe. The buried heat storage tank is buried under the ground and used for storing solar energy, and is simple to install, low in cost, rapid in installation speed, capable of storing the solar energy for a long time, good in thermal insulation effect and particularly suitable for a single family.

The invention discloses a rebar formwork integrated L-shaped wall component and a production method thereof. The rebar formwork integrated L-shaped wall component includes an external corner L-shapedformwork, an internal corner L-shaped formwork, an external corner formwork reinforcing piece, an L-shaped wall rebar framework and an oppositely pulling connecting piece, and the external corner L-shaped formwork is located at the external corner of the rebar formwork integrated L-shaped wall component and composed of first external corner L-shaped formwork sub-limbs and second external corner L-shaped formwork sub-limbs which are mutually perpendicular; the internal corner L-shaped formwork is located at the internal corner of the rebar formwork integrated L-shaped wall component and composed of first internal corner L-shaped formwork sub-limbs and second internal corner L-shaped formwork sub-limbs which are mutually perpendicular; and the middle of the oppositely pulling connecting piece is fixed on the L-shaped wall rebar framework, and the external corner L-shaped formwork, the internal corner L-shaped formwork and the L-shaped wall rebar framework form the integrated component. According to the rebar formwork integrated L-shaped wall component and the production method thereof, rebars and the formworks of an L-shaped wall in a shear wall structure are integrated, the formworks are free of removal, the site construction progress is accelerated, and the integrated component is low in weight, convenient to install, simple in construction and convenient to product and process.

An embodiment of the invention discloses a cooling tower and a construction method thereof, and relates to the technical field of building structures. The construction progress of the cooling tower can be improved, and structural dead weight is relieved. The cooling tower comprises a tower barrel and a tower column, the tower barrel comprises a barrel structure framework mainly formed by connecting metal ropes, the tower column is a rigid column and arranged in the barrel structure framework, a supporting beam is radially connected onto the tower column, and the end of the supporting beam is connected onto the barrel structure framework. The cooling tower and the construction method thereof are applicable to research, design and application of cooling tower structures such as laboratoriesand power plants.

The invention provides a method for foundation replacement construction of a peat soil soft foundation box culvert. The method comprises the following steps of, measuring and setting out, and confirming an excavation area; carrying out excavation for the first time from the first side of the box culvert foundation along the transverse direction of the roadbed and the longitudinal centerline of thebox culvert, and laying geotextile isolation layers along the excavation slope surface from the foundation base after the excavation reaches the specified elevation, and then carrying out stone replacement in layers; carrying out excavation for the second time on two sides adjacent to the first side of the box culvert foundation along the longitudinal direction of the roadbed and the transverse direction of the box culvert until the excavation reaches the design depth elevation and the preset width, and laying geotextile isolation layers on the two sides of the slope of the excavation area, and then carrying out stone replacement in layers; and carrying out backfilling in layers and tamping in layers of the excavation area, carrying out replacement until reaching the designed top elevation, and carrying out tamping and leveling until reaching the construction conditions of a box culvert structure. According to the method, the field construction progress of the peat soil soft foundation can be accelerated, the geotextile isolation layers are added, and the peat soil layer is isolated from stone replacement part, thus avoiding the mixed impact upon stability of the box culvert foundation.

The invention discloses an attached hoisting and transporting device for dismantling concrete supporting beams and a using method of the attached hoisting and transporting device. The hoisting and transporting device comprises a trolley system and a hosting system, the trolley system comprises a trolley arranged on operation tracks, the trolley comprises an upper-layer frame structure shaped likethe Chinese character 'mu' and a lower-layer frame structure shaped like the Chinese character 'mu', a balance weight tray is arranged on a lower steel plate and connected with a balance weight adjusting rope which is connected with a balance weight adjusting winch, and a self-powered speed limiting braking device is mounted on a pulley block; and rack winches having the same power and operating synchronously are fixed to the middles of operation tracks at the two side edges of a foundation pit correspondingly, and the balance weight adjusting winch, a cantilever beam, the rack winches and twolifting winches constitute the hoisting system, wherein the two lifting winches have the same power and operate synchronously. The problems of multi-layer form dismantling and hoisting of the supporting beams in the vertical direction are effectively solved, the attached hoisting and transporting device can be used for dismantling, hoisting and transporting of the oversized and large-section concrete supporting beams, the pressure of hoisting operation is relieved, and the construction progress is guaranteed.