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143results about How to "Easy and fast construction" patented technology

Single-layer latticed shell steel structure roof and installation method thereof

The invention discloses a single-layer latticed shell steel structure roof and an installation method thereof. The single-layer latticed shell steel structure roof comprises a roof grid, V-shaped supporting columns, tree-shaped supporting columns and side elevation horizontal supporting rods; the roof grid is formed by welding box type section structural steel rods; the V-shaped supporting columns, the tree-shaped supporting columns and the side elevation horizontal supporting rods are supporting structures of the roof grid and are connected to the curved surface grid in a hinged mode or a rigid connection mode; the lower parts of the V-shaped supporting columns are connected to bottom structures through H-shaped structural steel columns; the lower parts of the tree-shaped supporting columns are connected to the bottom structures through cross-shaped structural steel columns or sliding supports; the side elevation horizontal supporting rods comprise cantilever beams and two-force bars. According to the installation method, the sectional symmetric and synchronous construction method is adopted, and unloading is carried out according to the general principle of sectioning and synchronizing. The structure is reasonable, the method is orderly, and the overall installation accuracy and the stability are guaranteed.
Owner:JIANGSU HUNING STEEL MECHANISM

Beam bottom overhaul platform capable of spanning bridge piers and obstacle pillars and use method of beam bottom overhaul platform

The invention belongs to the technical field of bridge engineering, and in particular relates to a beam bottom overhaul platform capable of spanning bridge piers and obstacle pillars and a use method of the beam bottom overhaul platform. The beam bottom overhaul platform comprises pillar spanning truss trolleys, pier pillar spanning hanging racks, hoisting systems and connecting units, wherein the pillar spanning truss trolleys comprise two pairs of truss trolleys which are positioned on the inner sides of guardrails on two sides of a bridge, are capable of moving in the direction of the bridge and are arranged in symmetry; a plurality of detachable cantilever rods stretch outwards from one side adhering to the guardrails, of each truss trolley; the pier pillar spanning hanging racks are suspended on the cantilever rods on each pair of the truss trolleys through the hoisting systems; adjacent pier pillar spanning hanging racks are connected through the connecting units; the pier pillar spanning hanging racks comprise a plurality of truss units which are arranged in the direction of the bridge; adjacent truss units are in detachable fixed connection. The beam bottom overhaul platform has the advantages of high applicability, simple operation, good security, good economic property, good application prospect and the like.
Owner:CCCC ROAD & BRIDGE SPECIAL ENG

Construction device and construction technique for concrete pipe base

The invention discloses a construction device and the construction technology of a concrete pile foundation, which is applied to the construction of the foundation project of the bored concrete pile in the building field. The device comprises a top pressure type static pile pressing-in machine, a hydraulic cylinder connected with a pressure gauge a retaining cylinder connected with the top pressure type static pile pressing-in machine and an internal tube, the length of the internal tube is longer than that of the retaining cylinder; a flat head blanking plug is arranged at the lower end of the internal tube; a vibration device is arranged on the retaining cylinder and a feed inlet is opened on the side wall of the retaining cylinder. The key points of the construction technology are that: the builders rubbish is utilized to form a loose bearing platform at the bottom of the pile end, then the no-slump concrete is used for building a solid bearing platform on the loose bearing platform at the bottom of the pile end; a plurality of middle bosses are formed at the different heights of the pile; then the file is finished by lifting the internal tube, placing a reinforcing cage, casting and vibrating the concrete. The pile made according to the invention has high and uniform carrying capacity; the carrying capacity of the bearing platform can be read from a pressure gauge, which reduces the artificial error.
Owner:张立军

Double-layer stranded all-dry type optical cable

ActiveCN103399385AAvoid paddingMaintain water resistanceFibre mechanical structuresYarnWater block
The invention discloses a double-layer stranded all-dry type optical cable, and relates to the field of communication optical cables. The double-layer stranded all-dry type optical cable comprises a central strengthening component, a double-layer stranded cable core, water-blocking tapes, reinforcement yarn and an outer sheath layer, wherein the central strengthening component is wound with water-blocking yarn; the double-layer stranded cable core is formed through SZ stranding of inner all-dry type loose tubes and outer all-dry type loose tubes, and comprises three structures: a structure of six tubes on the inner layer and twelve tubes on the outer layer, a structure of seven tubes on the inner layer and thirteen tubes on the outer layer, as well as a structure of nine tubes on the inner layer and fifteen tubes on the outer layer; each loose tube comprises twelve optical fibers and 1-2 pieces of water-blocking yarn and contains no ointment; the water-blocking tapes are wrapped between the inner all-dry type loose tubes and the outer all-dry type loose tubes and outside the double-layer stranded cable core; the surfaces of the water-blocking taps outside the double-layer stranded cable core are wound with the reinforcement yarn; tearing ropes are arranged on the reinforcement yarn; and the outer sheath layer is arranged outside the reinforcement yarn. The whole optical cable adopts an all-dry type structure; and the number of cores can reach 288 maximally, the ointment is not contained, the water-blocking performance of the optical cable can be maintained, the weight is reduced, the mechanical property of the optical cable is improved, the splicing efficiency of the construction is improved, and the environment is protected.
Owner:FENGHUO COMM SCI & TECH CO LTD
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