44results about How to "Low demolition cost" patented technology

The invention relates to a method for removing reinforced concrete support beams in a foundation pit support. The method is characterized by comprising the following steps: preserving expansion holes in the support beams, cutting two slots in each support beam before removing the support beams, and cutting off stirrups on the upper parts of the support beams; finishing the actions of preparing a blasting agent, stirring uniformly and pouring into each expansion hole within specified time, controlling the temperature of the blasting agent at 10-30 DEG C, standing for 24 hours, performing simple crushing on the support beams, manually cutting off steel bars in the support beams after crushing of the support beams, and cleaning and transporting waste residues left after crushing of the support beams. The method has the characteristics of safety, rapidness in construction, freeness from vibration and flying rocks, low noise, easiness in operation, and the like; the removing construction period of the support beams in the foundation pit support can be effectively shortened, the economic input is reduced greatly, and the method has important significance to engineering construction.

The invention provides a deep foundation pit support and a removing method of the deep foundation pit support, and belongs to the field of building construction. The deep foundation pit support comprises a plurality of sections of concrete cubic blocks and a plurality of reinforcing steel bars. Every two adjacent concrete cubic blocks are bonded through a sulphide mastic interlayer. The reinforcing steel bars penetrate through the concrete cubic blocks and the sulphide mastic interlayers. An electric heater is pre-buried in each sulphide mastic interlayer. The removing method of the deep foundation pit support comprises the steps of (1) starting the electric heaters to heat the sulphide mastic interlayers, (2) when the sulphide mastic interlayers are heated to become soft, removing the sulphide mastic interlayers to expose the reinforcing steel bars penetrating through the adjacent concrete cubic blocks, (3) cutting off the reinforcing steel bars between the adjacent concrete cubic blocks to enable the adjacent concrete cubic blocks to be mutually separated, and (4) lifting out the concrete cubic blocks from a deep foundation pit. When the deep foundation pit support and the removing method of the deep foundation pit support are used, the removing cost of the deep foundation pit support can be effectively reduced on the premise that the removing efficiency and environmental protection are kept.

The invention provides a disassembling method of an adhesion type tower crane, being capable of reducing the disassembling cost of the adhesion type tower crane under a narrow terrain, and belonging to the technical field of building construction. The disassembling method of the adhesion type tower crane under the narrow terrain comprises the following steps: (a) disassembling a surplus balancingweight; (b) disassembling a hoisting jib; (c) balancing the tower crane; (d) disassembling a tower body; (e) disassembling a balance arm, a tower cap and a rotary mechanism. According to the disassembling method provided by the invention, no large-scale hoisting equipment is required during a tower crane disassembling process, so that the disassembling cost of the tower crane is lower.

The invention discloses a universal compact road overpass. In the invention, ascending right uphill roads (2) are arranged on the right side of a forward roadway (1) next to the overpass, the forward direction of the right uphill roads (2) are connected with interchange whirl roads (4), and the right direction of the right uphill roads (2) are connected with the arranged right turning roads (3); the external roadway of the whirl road is connected with the arranged downhill back roads (8) to a turning back direction; the inner road of the whirl road is connected with the arranged left turning downhill roads (6) to the left direction; the downhill back road on each direction is converged with left turning downhill roads on the overpass; and an open yard (7) is arranged among the left downhill roads. In the invention, motor vehicles and pedestrians can travel on respective way, with no need of stopping and waiting, thereby meeting smooth traffic and avoiding accidents, in addition, the universal compact road overpass has the advantages of little occupied floor area, little space usage and simple structure.

The invention relates to a rotation V-type T-structure bridge pier and a construction thereof. When an included angle formed between a line and an existing busy trunk line through vertical crossing is smaller, cross-hole arrangement of a bridge is more difficult. The bridge pier is constructed on one side of the existing trunk line, and comprises a pile foundation, a supporting platform, pier arms and a cover beam from bottom to top, wherein the supporting platform is divided into a lower rotary table and an upper rotary table from bottom to top; a rotary spherical hinge is arranged between the upper rotary table and the lower rotary table; during line operation skylight time, the upper rotary table and the structure rotate to a designed position by taking the rotary spherical hinge as the center, concrete on the outer side of the rotary spherical hinge is poured to form a solid stage, and the lower rotary table and the upper rotary table are fixedly connected together to complete construction. Due to the adoption of a rotation V-type T-structure scheme, the construction only needs to be performed on one side of the existing line, requirements for roads and construction sites on the other side are reduced, the conditions that houses on two sides of the existing line in an urban area are dense and are difficult to remove are facilitated, the removal cost is greatly reduced, and the construction period is guaranteed; meanwhile, due to the adoption of rotation construction, the influence on operation of the existing line is minimized.

The invention relates to a subway station extension method and structure based on a concrete-filled steel tube beam insertion method. The subway station extension method comprises the steps that a transverse through middle platform is built between existing bidirectional parallel shield tunnels to form an extension structure; and corresponding upper through holes and lower through holes are obliquely formed in segments of the two shield tunnels, jacking bent steel pipes are inserted from the through holes to be transversely connected to serve as external supports, a lining structure is constructed after soil is excavated on the inner side, and through connection is achieved after the segments at shield tunnel connectors are detached. Small expansion, downward storey addition and step-by-step expansion can be achieved, and the subway station extension method is suitable for expansion of subway stations with strict control over ground displacement and ground surface settlement and construction of shallow soil, soft stratums and large-span underground spaces.

The invention discloses a self-dropping type box girder steel pipe bailey door opening bracket and a supporting method thereof. The bracket comprises a reinforced concrete foundation (1), wherein a plurality of steel buttress piers (2) are arranged on the reinforced concrete foundation (1) and are connected with the reinforced concrete foundation (1) through sand boxes (3); bailey truss components (4) are arranged on the steel buttress piers (2); the steel buttress piers (2) and the bailey truss components (4) are combined to form a bailey door opening. Due to the fact that the structure of the bracket is toolized and modularized and the self-dropping characteristic of the sand boxes is applied, a casting box girder bracket can be assembled and disassembled within about 7 days, and the construction speed is increased; due to the adoption of the technology that the whole sand boxes fall into a die, the workload of work high above the ground for de-molding the bracket is reduced by over 90 percent, and the safety of construction is greatly improved.

The invention discloses a pumped storage power plant tail water retained rock step blasting safety protection method, and relates to an underwater rock step blasting safety protection method. A bladder curtain and porous stoplog gates are constructed outside a rock step to be blasted; the bladder curtain consists of a plurality of steel pipes; two rows of holes are bored on each steel pipe; and each steel pipe is connected with an air pipe of an air compressor. The porous stoplog gates consist of a steel frame and bamboo rafts; I sections are arranged on both sides of the stoplog gate of each hole; the two sides of each I section are fixed on round flow splitting support piers through steel plates and expansion bolts; each stoplog gate is in welded connection through channel steel, the I sections and angle bars; a layer of vertical bamboo gangway is spread on the water inlet surfaces of the stoplog gates; and simultaneously safety nets are arranged on the tops of flow splitting support piers on the top and both sides of a single hole stoplog gate. The method adopts the proposal of arranging the bladder curtain plus the steel frame, the bamboo rafts and the safety nets to replace a proposal of the stoplog gate, has scientific and reasonable design, protects a trash rack and a tail gate against the damage and the influence of the blasting, and brings about easy spoil removal, short manufacturing and installation time limits, and low manufacturing, installation and demolition cost.

The invention discloses a transverse integral component for an assembled integrated wall-tile system and an assembling method thereof, and relates to the field of wall-tile processing, assembled devices and assembling installing technologies. By means of the transverse integral component for the assembled integrated wall-tile system and the assembling method thereof, the problems that in an existing wall-tile wet combining method, the work environment is poor, the construction period is long, the labor cost is high, and workers are subject to pneumoconiosis are solved; the problems that in anexisting wall-tile dry hanging method, installing is tedious, the labor cost and the material cost are high, occupied space of wall-tile back fitting keels is large, and the using rate of indoor spaceis reduced are solved. According to the transverse integral component for the assembled integrated wall-tile system and the assembling method thereof, vertical components are fixedly connected with wall corners, a clamping piece I is clamped on every pair of longitudinal scale punched holes of a vertical component, multiple transverse components I are arranged between the two adjacent vertical components, elastic protection films are arranged on the backs of wall tiles, each wall tile is installed between the two adjacent transverse components I, and clamping grooves in the upper end face andthe lower end face of each wall tile are matched with a first hook and a second hook of the corresponding transverse component I respectively. The transverse integral component for the assembled integrated wall-tile system and the assembling method thereof are used for assembling of an assembled integrated wall-tile system.

The invention discloses a construction method for quickly building a road. The construction method comprises the following step that a site is dug, filled and leveled; the roadbed is tamped; waterproof geotextile is manufactured; grooves are dug in the two sides of the roadbed, the top face of the compacted roadbed is flatly laid with the waterproof geotextile, the ends of the waterproof geotextile extend into the grooves, then the grooves are backfilled with natural plain soil layer by layer, and compaction is conducted layer by layer; road slabs are manufactured, and a plurality of anchoringholes are formed in the middles and the edges of the road slabs; the road slabs are installed, specifically, the multiple road slabs are spliced and flatly laid on waterproof geotextile one by one, anti-skid lines of the road slabs face upwards, and slab joints of the multiple road slabs and hole positions of the anchoring holes are aligned; reinforcing parts are manufactured, wherein the reinforcing parts are U-shaped hoops and L-shaped hoops; the U-shaped hoops and the L-shaped hoops are used for reinforcing the road surface; secondary waterproof treatment is carried out; and the traffic isput into service.

The invention discloses an installation and wind measurement method for a movable offshore wind measurement device. The offshore wind measurement device comprises a wind measurement tower structure, aplatform structure, a lifting device and a pile leg structure. The installation and wind measurement method for the movable offshore wind measurement device comprises the steps that (1) assembly is carried out on land; (2) towing in place is carried out; (3) the platform structure is lifted for ballasting; (4) after the platform structure is in place, the wind measurement operation can be carriedout; and (5) the platform structure is lowered, pile legs are pulled out, and displacement is carried out. Through the installation and wind measurement method for the movable offshore wind measurement device, the overall migration and reuse of the offshore wind measurement system can be effectively realized, and the advantages of no piling, short construction period, low wind measurement cost and free demolition are achieved.

The invention discloses a three-pipe type flexible composite insulated cross arm. The three-pipe type flexible composite insulated cross arm is formed in the mode that three pipe-type insulated cross arm parts are connected with one another in a hinged mode, and each pipe-type insulated cross arm part comprises a composite material insulated inner core pipe and an umbrella skirt on the side surface of the composite material insulated inner core pipe of pressure gel. In this way, according to the three-pipe type flexible composite insulated cross arm, a design concept of a former rigid insulated cross arm is abandoned, a flexible structure which is formed in the way that the three pipe-type insulated cross arm parts are connected with one another in a hinged mode is adopted, the cross arm only bears axial tension and can freely rotate in the line direction, and load working on an iron tower under a disconnection condition is reduced; and meanwhile, the three-pipe type flexible composite insulated cross arm has enough mechanical strength and good ageing resistance and corrosion resistance performance, and using by high-voltage and ultra high voltage lines is met.

The invention relates to a method for dismantling a dry-type Man-type gas cabinet, which includes steps such as air replacement, erection of scaffolding, emulsification and soaking of dirty oil and impurities with a chemical cleaner, dismantling of the top system of the cabinet and lowering of the bottom, dismantling of the main structure, lifting, cleaning waste liquid treatment, etc. . The demolition method reduces the risk of dismantling inflammable and explosive structures, reduces the pollution to surrounding areas and the environment, and has low demolition costs, and is especially suitable for demolition operations in a working environment where the work site is narrow and it is difficult to stack large components.

The invention provides a disassembling method of an adhesion type tower crane, being capable of reducing the disassembling cost of the adhesion type tower crane under a narrow terrain, and belonging to the technical field of building construction. The disassembling method of the adhesion type tower crane under the narrow terrain comprises the following steps: (a) disassembling a surplus balancingweight; (b) disassembling a hoisting jib; (c) balancing the tower crane; (d) disassembling a tower body; (e) disassembling a balance arm, a tower cap and a rotary mechanism. According to the disassembling method provided by the invention, no large-scale hoisting equipment is required during a tower crane disassembling process, so that the disassembling cost of the tower crane is lower.