125results about How to "Reduce additional stress" patented technology

The invention discloses a method for processing vehicle bump at a bridge head of an existing highway, and the method comprises the following steps: mixing lightweight materials at a construction site; drilling holes from embankment slopes on both sides of the highway, and automatically discharging soil outward from a threaded opening while rotatably drilling holes; after a designed depth reaches, rotatably and slowly pulling out a drill rod, and starting a booster pump so as to pump the lightweight materials into the obtained drill holes by virtue of a central tube of the drill rod; and jetting the lightweight materials from the central hole of the drill rod so as to gradually fill the hole from bottom to top, thereby replacing the filled soil of an embankment. The drill holes are arranged squarely or quincuncially on the side slope of the embankment, a certain included angle is formed between each drill hole and a horizontal plane, and the elevation of the opening of each hole is positioned below a pavement structure layer and above the underside of the filled soil of the embankment. By using the method disclosed by the invention, the weight of the embankment is greatly reduced, thereby reducing the settlement after construction caused by embankment loads and then effectively solving the problem of vehicle bump at bridge heads. During the construction period, the highway is not required to be closed, therefore, the normal traffic of the highway is not affected. The method disclosed by the invention is simple in construction process, convenient to operate, simple in equipment, economical, and high in efficiency.

The invention discloses a tension structure used in automatic fiber coiler, composed of a fiber collector, a driver, a transmit box, a fiber discharge wheel, a support base, and a sliding table tension element, a first fiber guider and a second fiber guider, wherein the lower end of the support base via nut and screw is mounted on the sliding table, while the upper end is mounted with the transmit box, the driver is on the transmit box, while a motor and a speed reducer are mounted at the outer back of the transmit box, the accurate shaft of the driver is suspended at the outer front of the transmit box, which is mounted with the fiber discharge wheel, the fiber collector is at one side of the support base, vertically with the fiber discharge wheel, the sliding table is arranged with a plurality of mounting holes for fixing and mounting devices, the tension element, the first and the second fiber guiders via nut and screw are fixed on the sliding table, which guide grooves are in one plane. The inventive tension device has reasonable, compact and simple structure, without reverse dead area, but with stable transmission control, accurate tension control, non-zero-bias in force measurement, digit and closed tension control.

The invention relates to a square cabin composite plate, which comprises an outer skin, an inner skin and a middle sandwich layer, wherein a rubber layer is arranged between the outer skin and the middle sandwich layer. The rubber layer is arranged between the outer skin and the middle sandwich layer, the elasticity modulus of the rubber is much smaller than the elasticity modulus of polyurethane foam and basswood, so the heat stress between the outer skin and the rubber is small, the heat deformation phenomenon is reduced, the debonding problem of the existing square cabin caused by heat deformation at high temperature is solved, meanwhile, the rubber layer, the outer skin, the foam and the basswood are bonded through bonding agents, vibration reduction and buffer effects can be realized between the outer skin and the inner layer framework, the additional stress between the outer skin and the inner layer structure caused by impact and vibration in the transportation process is reduced, and the debonding problem in the transportation process is reduced.

The present invention relates to a highway road surface forming method capable of resisting ground surface large-deformation. Said method includes the following steps: firstly, laying a layer tension-resisting geotechnical material on the top layer of roadbed, making edge-covering treatment of roadbed two sides whose width range is 30-50 cm on the geotechnical material, then laying broken stone hardcore whose thickness is 10 cm-15 cm on the geotechnical material, according to different non-uniform settlements respectively further laying road surface base layer and surface layer with different sizes, and between the road surface structure plate blocks of every layer filling flexible material with different widths.

The invention discloses a deviation rectification device for a steel pylon, and particularly relates to a jacking device for deviation rectification of the steel pylon in a mining area of a coal mine. The jacking device for deviation rectification of the steel pylon in the mining area of the coal mine comprises an independent long-column concrete foundation (1), foundation bolts (3) and a pylon leg plate (4) capable of being jacked, wherein the pylon leg plate capable of being jacked (4) comprises a base plate (6) and a steel pylon principle material connecting plate (8) welded to the base plate (6), the steel pylon principle material connecting plate (8) is welded to a steel pylon principle material (5) along the edge, the base plate (6) of the pylon leg plate capable of being jacked (4) is connected with the independent long-column concrete foundation (1) through the foundation bolts (3), loading holes (7) used for installation of jacks (2) are formed in the independent long-column concrete foundation (1), and the length of exposed screw threads of each foundation bolt (3) is no smaller than 150mm. According to the structural system, the jacking device for deviation rectification of the steel pylon in the mining area of the coal mine is simple in structure, when the steel pylon inclines, the foundation bolts (3) are loosened, the jacks can be used for directly jacking the pylon leg plate capable of being jacked, and deviation rectification can be carried out.

The invention relates to a three-dimensional reinforced rigid-soft composite ecological retaining wall and a construction method. The retaining wall is characterized by comprising an upper portion soft ecological retaining wall body and a lower rigid retaining wall body, wherein the upper portion soft ecological retaining wall body and the lower rigid retaining wall body are connected through anchor bars. All layers of filling materials of the upper portion soft ecological retaining wall body are connected through connecting buckle parts, and water draining pipes, the connecting and fixing ends of horizontal ribbing bodies and inclined tie bars are evenly arranged on the lower rigid retaining wall body. A wall heel of a foundation of the retaining wall extends backwards to the edge of a stable soil body, vertical reinforcing piles are arranged at the bottom of the retaining wall, the horizontal ribbing bodies are laid in the filling materials behind the retaining wall, the wall toe of the retaining wall is filled back with a wall foot pressing soil body, and vertical ribbing bodies are vertically arranged at the connection position between the filling materials behind the retaining wall and an original soil body. The retaining wall structurally combines the advantages of a rigid retaining wall and the advantages of a soft retaining wall, achieves ecological slope protection, reduces pressure of soil behind the retaining wall, enhances structural integrity and has good technical and economical benefits.

The invention relates to an air entraining structure used for an inner rotor cavity of a compressor. Multiple air entraining grooves are formed in the rotor installation edge of the compressor. Air entraining air flow communicates with the rotor inner cavity and an outer rotor cavity through the air entraining grooves. A compressor rotor, the rotor installation edge and a next level of compressor rotor are fixedly connected through a connecting piece. According to the air entraining structure used for the inner rotor cavity of the compressor, the air entraining air flow is entrained into the inner rotor cavity for heating a post level of inner rotor cavity of the compressor, the temperature gradient of a rotor disc is reduced, and therefore rotor additional stress brought by the temperature gradient is reduced; and in a limited structural space, safe and reliable connection of the rotor is not affected, air entraining of the inner rotor cavity is achieved while no extra structural part is arranged, the rotor additional stress, caused by the temperature gradient, on the rotor disc is reduced, the structure is safe, and reliability is high.

The invention discloses an environmental water-loving composite sea dike which is arranged between a fore beach and a back beach and comprises a foundation bed and a slope body ridgy on the foundation bed, wherein an upstream slope surface, a dike body and a downstream slope surface sequentially cover the outer surface of the slope body between the fore beach and the back beach; the dike body is set with an empty case structure and is made from transparent materials; the dike body is formed by sequentially connecting a circular arc shaped upstream surface, an arc-shaped dike crest and a slope downstream surface; and an arc-shaped sound deadening wave wall is arranged at the side of the dike crest, near the sea. Thus, the sea dike disclosed by the invention has good effects of damp proofing, wave prevention, erosion resistance, beach strengthening and shore protection; and the width of the dike body is smaller, the structural style is simple and stable and the foundation stress is small to ensure that the foundation settlement can be effectively decreased and the requirement on foundation bearing capacity is easily satisfied.

The invention relates to a reinforced concrete foundation for mounting an assembled tower crane, which is characterized by comprising eight rectangular reinforced concrete blocks of a completely identical shape and in a completely identical size, wherein every four rectangular reinforced concrete blocks are encircled into a rectangular-ambulatory-plane structure in an identical plane; the two rectangular-ambulatory-plane structures are superposed in a way that one is arranged above the other; every two adjacent rectangular reinforced concrete blocks are mutually staggered around the centre of the corresponding rectangular-ambulatory-plane structure for a phase angle of 90 degrees so that each rectangular reinforced concrete block of an upper layer presses the two rectangular reinforced concrete blocks of a lower layer; each rectangular reinforced concrete block is provided with a plurality of pre-embedded connecting holes; the rectangular reinforced concrete blocks of the upper and lower layers run through a part of the pre-embedded connecting holes through a bolt set to be connected into a whole; and the other pre-embedded connecting holes are connected with a tower body structure of a tower crane through the bolt set. The technical scheme has the characteristics of simple structure, good chemical property due to the rectangular-ambulatory-plane structures, quick and convenient mounting and disassembly and remarkable economical and social effect.

The invention provides a high-speed-railway karst roadbed structure with a pre-warning function and a repairing method thereof so as to effectively solve the technical difficult problems that as for atraditional high-speed-railway single karst roadbed, the collapse risk is high, the reinforcing effect is poor, karst caves cannot be accurately positioned, the engineering cost is high, and secondary repairing is difficult. The roadbed structure comprises a high-strength geotextile insulation layer, a light concrete filled-up body and a foundation bed, the first high-strength geotextile insulation layer is laid on a foundation, and the light concrete filled-up body is arranged on the first high-strength geotextile insulation layer in a filled-up mode. The foundation bed is arranged on the light concrete filled-up body in a filled-up mode, a first multi-point settlement observation system and a second multi-point settlement observation system are arranged on the bottom face and the top face of the light concrete filled-up body correspondingly, and a roadbed collapse pre-warning system is arranged nearby a roadbed basal slope and used for collecting and processing roadbed settlement data observed by the first multi-point settlement observation system and the second multi-point settlement observation system and conducting automatic pre-warning when deformation of a roadbed tends toexceed the limit. A reserved post grouting repairing system is arranged in the light concrete filled-up body.

The invention relates to a cantilever hanging bracket and a using method thereof. The cantilever hanging bracket comprises a main truss, a traveling mechanism and an anchoring device. The main truss comprises two diamond-shaped truss bodies arranged symmetrically in a horizontal mode. Each diamond-shaped truss body comprises an upper chord, a lower chord, a front chord and a rear chord, wherein the front end of the upper chord and the upper end of the front chord are connected through a front pitch point, the rear end of the upper chord and the upper end of the rear chord are connected through an upper pitch point, the lower end of the rear chord and the rear end of the lower chord are connected through a rear pitch point, the front end of the lower chord and the lower end of the front chord are connected through a lower pitch point, and a column is connected between the upper pitch point and the lower pitch point. A rear horizontal truss sheet is connected between the columns of the two diamond-shaped truss bodies, a front upper cross beam is connected between the front pitch points of the two diamond-shaped truss bodies, the upper chords incline towards the front lower direction, and inclined angles of the upper chords are 15-25 degrees. The cantilever hanging bracket and the using method of the cantilever hanging bracket can achieve generality of a hanging basket main truss and the cantilever hanging bracket, and the cantilever hanging bracket is low in gravity center, good in stability and reasonable in stress.

Disclosed is a pipe laying method for a subsidence area of a coal mine. A high-density polyethylene pipe, which is good in flexibility, penetrates the coal mine subsidence area and is disposed in a cover plate pipe ditch, a pipe ditch top plate is 0.5m away from the ground, and the pipe ditch width is about 1m wider than the outer diameter of the pipe. The pipe is laid in the pipe ditch in a curved S shape, two sides of the pipe are filled with cushioning materials such as yellow sand and saw powder, and rubber supports which are about 20cm are arranged for every 30m to 50m at the bottom of the pipe. According to the method, the pipe can resist effects of large deformation of the ground surface such as mining area uneven settlement and buckling deformation, the normal operation of the pipe during the ground surface subsidence can be guaranteed, damage to the pipe due to additional internal force caused by ground surface settlement can be effectively prevented, relocation land resources are greatly saved, the structure is simple, implementation is convenient, investment is small, the effect is good, and wide practicality is provided.

The invention discloses a novel breakwater and a design method thereof. The breakwater is arranged between a foreshore and a backshore, and comprises a foundation bed and a breakwater body, wherein a riverside slope protecting surface of the breakwater body comprises a slope-shaped riverside slope protecting surface and more than two arc-shaped riverside slope protecting surfaces which are connected together in sequence; a riprapping dike dam is arranged between the bottom end of the slope-shaped riverside slope protecting surface and the foreshore, and the top end of the slope-shaped riverside slope protecting surface is connected with the arc-shaped riverside slope protecting surfaces through a platform; and two adjacent arc-shaped riverside slope protecting surfaces are connected through a corner of the platform. Therefore, in the invention, as the riverside slope protecting surface is combined by the arc-shaped slope protecting surfaces and the slope-shaped slope protecting surface through the platform, the rise of waves and the wave overtopping rate of a breakwater top are effectively reduced through the wave breaking function of the arc-shaped slope protecting surfaces and the energy dissipating function of the slope-shaped riverside slope protecting surface; compared with the conventional breakwater, the novel breakwater can meet design requirements under the same condition more effectively based on a lower altitude of the breakwater top under the same design condition.