645results about "Protective construction" patented technology

A safety net that includes at least one illuminating element. The safety net is intended to be stored in a rolled-up fashion (similar to a roll-up window shade) in the trunk of a vehicle. When illuminated, the safety net provides a completely new and unique means of alerting oncoming traffic to a road hazard or other situation requiring traffic control. The safety net provides a warning means that will not be knocked over by the wind, as wind blows freely through the voids of the net. In addition, the safety net screens the scene from the view of those in oncoming traffic. The device may include a solid state controller that provides a variety of patterns or symbols to further enhance the visual safety features of the device. This can be accomplished by placing fiber optic strands in the net voids, or within the side illuminating fiber optic conduit itself. The device may also include metal cables to form a physical barrier.

A portable safety barrier that can be set up across a drive way or other path to provide a visible and physical indication of a safe zone boundary particularly for children. Netting attached to a core or reel disposed in a housing forms the barrier. The netting is free to deploy from the housing for attachment to a remote post; both the housing and post including an auger for anchoring the housing and post to ground. The housing has a rewind system to reel in the netting which includes a gear train for mechanical advantage. The rewind system operates manually and with out a bias assist. A selectively operated stop cooperates with the rewind system to tighten the netting after deployment and keeps the netting taut.

The invention discloses a rockfall prevention driven flexible protective net system designing method based on the energy matching principle. The rockfall prevention driven flexible protective net system designing method comprises the steps that 1, the energy consumption rate matching principle of components of a driven flexible protective net structure is established; 2, preliminary model selection and arrangement are performed on the components of the driven flexible protective net structure; 3, an explicit dynamics computation model capable of considering features such as the initial perpendicularity, large sliding of a supporting rope, large rotation of a supporting column and large deformation of an interception net is built through a finite element computing method; 4, impact loading is performed on the computation model, and dynamics response of the structure under the impact effect is analyzed; 5, structural design of the driven flexible protective net is performed. According to the method, the design principle of energy matching is adopted, both the force balance and the energy balance are considered, and the design is more scientific and reasonable; the component strength, stability, deformation and the like are used as design verification control indexes, and both the component design bearing capacity safety storage and the applicability of the protective net structural overall interception effect are considered.

The invention discloses an energy-dissipating hangar tunnel and an energy-dissipating supporting base thereof. The energy-dissipating supporting base comprises a spring guide rod, wherein the spring guide rod is sleeved in the spring; a protective shed is supported by the upper end of the spring guide rod; the lower end of the spring guide rod passes through a load-transferring steel plate; the upper end of the spring is fixed on the bottom surface of a load-transferring bracket; the lower end of the spring is supported on the load-transferring bracket; and the load-transferring steel plate is fixed on a support. The energy-dissipating hangar tunnel and the energy-dissipating supporting base thereof have the innovative points that: the energy-dissipating supporting base is simple in structure, low in cost, light in weight, high in rigidity and high in buffer capacity when impacted violently; and the energy-dissipating supporting base is suitable for performing energy dissipation on facilities easily subjected to violent impact, such as the hangar tunnel and the like.

An apparatus comprising a geogrid sand fence for depositing matter moved by wind currents including a stand fence and related methods are provided. A geogrid sand fence for the control of sand or other particulate matter movement can include support members carrying a fencing material. The fencing material can include a High Density Polyethylene geogrid mesh material having apertures distributed to provide a 50% porosity to maximize sand deposit volume. The geogrid mesh material has sufficient structural weight to be employed with a height of approximately 2 meters, which can be adjusted to maintain maximum effectiveness.

The present invention is rockfall preventing method and flexible rockfall guiding and preventing net. The flexible rockfall guiding and preventing net with width greater than the protected section and sufficient height for stopping rockfall and guiding the rockfall to safety position is suspended with uprights in the protected area. The net has the upper edge suspended to the uprights and the lower end opening drawn to the massif to guide the rockfall to required position. The net has parts capable of moving with the shock of rockfall to produce corresponding deformation, and has position limiters set on its two sides. The present invention may be used widely for various kinds of rockfall preventing engineering for montanic railway, highway and building.

The invention discloses a combined rock fall shed tunnel and an installation method thereof. The shed tunnel is formed by combining a cast-in-situ pile foundation arranged below a pavement with prefabricated parts, wherein the prefabricated parts comprise a pile foundation arranged below the pavement, a support pillar arranged above the pile foundation, a support beam arranged above the support pillar, and a protection plate arranged above the support beam. The invention has the advantages that: the shed tunnel has a simple structure, low cost, light weight and good protection effect; and more importantly, the parts are made of prefabricated materials, so during use, the shed tunnel can be quickly transported to a construction site by a vehicle or manually, is installed in a combined mode, has high installation speed and can meet the requirement of emergently erecting the shed tunnel to ensure traffic under critical conditions such as continuous mountain landslide and the like caused by earthquake.

The invention provides a method for manufacturing a cushion pad layer of a rock protective shed by utilizing waste tyres, comprising the following steps: designing the specifications and flexibility of the cushion pad layer according to the major structure and protection requirements of the rock protective shed and determining the construction conditions; constructing a water-resisting layer, a shed top inner wall, a shed top outer side wall, a shed top end wall, a drainage blind ditch and drain holes on the shed top of the rock protective shed, embedding tyre fixing pieces, and arranging the waste tyres or tyre cages on the shed top in a layered mode; connecting adjacent waste tyres or tyre cages by utilizing tyre connecting pieces at predetermined positions, and utilizing the typre fixing pieces to connect the waste tyres or tyre cages at the boundary of the cushion pad layer respectively with the shed top inner wall, the shed top outer wall and the shed top end wall; filling rubber soil formed by mixing waste rubber particles with sandy soil in a certain proportion into gaps of the waste tyres so that the designed compactness of the cushion pad layer is reached; laying the cushion pad layer until reaching the designed height and gradient, covering an artificial fillstratum formed by mixing macadam and the sandy soil on the surface of the cushion pad layer, and constructing an intercepting ditch and a drainage open trench on the surface of the cushion pad layer; and in terms of the rock protective shed with larger length, constructing the cushion pad layer in a segmental mode, and cultivating plants suitable for growing locally on the surface of the cushion pad layer. The method provided by the invention ensures that the cushion pad layer of the rock protective shed has high-efficiency buffering effect, and the national strategic goal of recycling wastes can be realized by consuming a large quantity of the waste tyres.

A portable, inflatable flood wall is characterized by a sheet of synthetic plastic material which is folded back on itself to define a chamber between bottom, rear and front portions of the sheet and within which at least one inflatable bladder is secured. When the bladder is inflated, the rear portion of the sheet is erected to a vertical position which prevents water from passing beyond the sheet. The front portion preferably contains a plurality of openings to allow water to enter the chamber. The weight of the water on the bottom portion of the sheet serves to hold the wall in place. A plurality of such walls may be connected in end-to-end relation to construct a wall of a desired length.

The invention discloses a flexible hangar tunnel used for isolating and protecting flying rocks or falling rocks and being capable of reducing construction difficulty, which consists of at least two steel structure arches arranged at intervals along the axis and at least one layer of metal net hung and connected on the steel structure arches, wherein the steel structure arches are fixed on the foundation; and the metal net is positioned outside the steel structure arches and connected with the foundation. Under the condition of meeting the same protection requirement, compared with the existing hangar tunnel of reinforced concrete structure, the size, weight and land occupying of the hangar tunnel are greatly reduced, and the fixing strength requirement between the structure and the ground is reduced, thus reducing the size requirement of the structure foundation, reducing the excavated volume and appendant damages thereof, reducing the damage to the environment, and having good permeability and no need of considering lighting and ventilation in the tunnel. The flexible hanger tunnel is especially applicable for isolating moving objects such as hillside falling rocks or blasting flying rocks.

A transportable and reusable silt fencing system for use at a construction site to prevent sediment and soil erosion comprises tension rods, a male section, a female section, and a fencing material having sleeve supports for the rods to slide in and support the fencing material. The tension rods are collapsible. The rods collapse when a truck drives over the fence, but re-assume their original form once the truck has passed. If a fence longer than the fencing section is required, additional fencing sections may be attached by connecting a male section of one fence section with the female section of another fence section.

A touch screen assembly for use with a display, such as, for example, a flat panel display. The touch screen assembly includes a transparent panel, preferably in the form of a panel of tempered glass adhered to a touch screen panel. Consoles having touch screen assemblies are also disclosed.

A portable barrier is provided to obstruct viewing the source of traffic congestion comprising a first vertical assembly, a second vertical assembly and a retractable screen. Each vertical assembly has a top portion, a middle portion, and a base stand. Each middle portion includes at least one tubular barrel capable of receiving the top portion and a female fastener. The retractable screen is drawn from (and may retract into) the first vertical assembly. This retractable screen has one or more partitions which include a plurality of parallel horizontal straps which all attach to a vertical fastener which engages the female fastener located on the second vertical assembly.

The invented method provides a series mesh cage for constructing sand barriers, sediment storage dams, sand banks and sand walls, comprising a triangular cage body composed of a mesh cage front surface 2, a mesh cage rear surface 3, and a mesh case bottom surface 4, the inner of the front surface 2 and rear surface 3 of the mesh cage have earthwork cloth liners 5. The series mesh cage is used to construct sand barriers, sediment storage dams, sand banks and sand walls. Thereby sand in desert is used as building material for fathering desert. The invented mesh cage can be produced mechanically in large scale, and sand barriers, sediment storage dams, sand banks and sand walls made of mesh cages can be constructed mechanically.

The invention provides a bridge air barrier with full automatic intelligent control, comprising multiple automatically controlled air barrier units which are in linear arrangement along the bridge direction at the two sides of a bridge. Each air barrier unit comprises an air barrier structure system, an air barrier drive system and an air barrier control system. Each air barrier structure system comprises multiple air barrier strips capable of rotating along a rotary shaft. Each air barrier drive system comprises a drive gear, a drive chain, a drive main shaft and a drive motor; and the drive motor drives the air barrier strips to rotate around the rotary shaft. Each air barrier control system comprises an air speed sensor and a central microprocessor, wherein the air speed sensor is installed outside the bridge air barrier; the real-time air speed and direction data monitored by the air speed sensor are transmitted to the central microprocessor; and then the central microprocessor gives an instruction so that the air barrier strips rotate to the pointed angle; and the ventilation rate of the air barrier is automatically adjusted. The bridge air barrier with full automatic intelligent control can ensure the safety of driving under crosswind on the bridge, improve the wind-resistant performance of the bridge structure and meet the traveling vision requirement of passengers maximally.

A privacy screen includes a flexible panel having a hem formed peripherally about the panel. The hem includes a plurality of pockets. Each pocket accommodates a respective magnet. The magnets releasably adhere to a metallic door or frame surrounding a window or wall opening to be covered. This holds the panel over the window or wall opening to prevent viewing therethrough.

The invention relates to a side slope rockfall cushioning and protection system. The side slope rockfall cushioning and protection system is formed by laminating a plurality of protection layers, and each protection layer is divided into two units, namely one passive protection unit and one energy-reducing buffer unit. The quantity of the protection layers is determined according to the oblique length of a side slope, a net distance between two adjacent protection layers is 20m to 25m, and a net distance between the passive protection unit and the energy-reducing buffer unit in the same protection layer is 8m to 10m. A first passive protection unit in the passive protection units consists of a steel-column supporting structure, a cat anchor structure, a continuous protection net and a detachable-type protection net; from the second protection layer, each passive protection unit consists of a steel-column supporting structure, a cat anchor structure and a continuous protection net; each energy-reducing buffer unit consists of a triangular supporting structure and high-elasticity meshes. By adopting the slope rockfall cushioning and protection system, the falling energy of the side slope rockfall can be reduced, the impact force of the rockfall for the protection net can be reduced, the accumulation problem of the rockfall in the system can be effectively solved, the consumption amount of materials is greatly reduced, and the engineering construction cost is reduced.

The invention discloses a movable windbreak for a bridge, and relates to a bridge technology. The movable windbreak comprises a plurality of movable windbreak units which are sequentially and linearly arranged along the bridge towards both sides of the bridge floor, wherein each movable windbreak unit comprises a movable windbreak face, a special driving mechanism, a bracket and a base. The movable windbreak for the bridge can effectively ensure the driving safety on the bridge under crosswind conditions, raise the ambient wind speed for driving on the bridge, effectively ensure the wind resistance safety of a major bridge structure after the windbreak is arranged, and effectively lower the cost of the major bridge structure in the aspect of wind resistance design.

A fence for retaining silt and providing a visual marker comprising a plurality of stakes, each stake comprising, a generally flat surface having a plurality of holes defined therein and spaced along at least a portion of the flat surface, a strip of fabric, comprising, a lower portion having a first visual indicia associated therewith, an upper portion having a second visual indicia associated therewith distinct from the color of the first portion, the upper and lower portions being connected; and, a plurality of fasteners for fastening the strip of fabric to the plurality of stakes. The fence preferably also includes a wire grid or mesh backing to provide additional strength and support to the lower portion fabric.

The invention discloses a shutter type wind shield for a high-speed railway bridge. The wind shield comprises at least two stand columns, wherein a gap is reserved between every two stand columns, bottoms of the stand columns are fixed on the ground or on a base, at least one wind blocking blade which can rotate along the central axis of the blade and used for blocking crosswind is arranged between every two adjacent stand columns, and a gap is reserved between rotation tracks of every two adjacent wind blocking blades. The wind blocking blades change rotation angles according to the magnitude of the crosswind, and for small-magnitude crosswind, the flow direction of the crosswind is changed while ventilation is performed through rotation of the small-angle wind blocking blades; for large-magnitude crosswind, the wind blocking blades rotate to be parallel to the wind coming direction, the crosswind directly passes through the gaps between the wind blocking blades, andthe wind load acting force caused by the large-magnitude crosswind to the shutter type wind shield is reduced, so that the effect transmitted by the shutter type wind shield to the bridge at the lower part is reduced, the normal design and operation of the bridge are guaranteed, and the extra cost caused by resistance to the crosswind is reduced.

A slope anti-rockfall guard net comprises cable anchor poles (1), cable nets (4) and steel wire meshes (5); the cable anchor pole (1) is a steel rod, and buried in a slope protection area; the steel wire mesh (5) is paved on a protection grid cell, close to a slope surface, and binding wires can tie and fix the steel wire mesh with vertical support ropes (2) and transverse support ropes (3); the cable net (4) is paved on the top surface of the steel wire mesh(5), and stitching ropes can stitch the cable net with vertical support ropes (2) and transverse support ropes (3). The slope anti-rockfall guard net and a construction method thereof are reasonable in guide net preparation step design, simple in operation, and the prepared guide net is strong and durable, obvious in effect, can intercept road slope rockfall, thus reducing rockfall damages in the road usage process.

Embodiments of this invention describe a security system/barrier for use in water, in additional to a method for using the security barrier and improved individual components of the barrier. The security barrier comprises a top structure (“topper”), a vertical pin, a butt plate, a rope-containing tube (“rope tube”), and an individual panel. Other embodiments describe a multiple row security barrier, a flexible mooring for the barrier, and use of acoustic sensing equipment in the lee of the barrier.

The invention discloses a protective method and structure for preventing rockfall dangers at a high and steep slope of a mountain road. A plurality of arch-shaped frames (1) are mounted on a road surface (9), each arch-shaped frame (1) is connected by a connecting beam (2), support ribs (3) are installed to form a canopy frame skeleton, and the canopy frame is connected with a foundation through an independent foundation (7) and foundation joint bars (8). A reinforced steel net (6) is paved and hung on the scaffold framework to serve as a stone blocking buffer of the canopy frame structure, and the reinforced steel net (6) is composed of a steel wire rope net and a steel wire net; the steel wire net is hung on the surface of the steel wire rope net, and the meshes of the two nets are different. The protective method and structure provided by the invention overcomes poor constructability of a slope safety netting system, overcomes defects of a traditional reinforced concrete shed tunnel having heavy self weight and high requirement on the bearing force of the foundation, has the advantages of convenient construction, low cost and reliable protection, and is worthy of popularization.

The invention discloses a wind-proofing sand-blocking device for preventing sand from affecting or damaging railways and other facilities. The wind-proofing sand-blocking device comprises a vertical column buried on the ground and a wind-blocking ball provided with through holes, wherein an anti-corrosion steel wire mesh is fixed on the vertical column, and the wind-blocking wall is fixed on the iron wire mesh. The wind-blocking wall comprises a plurality of wind-blocking monomers which are combined together; each wind-blocking monomer is a rectangular double-sided sandwich structure consisting of a windward side and leeward side, wherein the thickness of a hollow sandwich layer is 5 to 15cm; the windward side and leeward side of the wind-blocking monomer are respectively and symmetrically provided with at least one through hole; and holes on the windward side of the monomer and holes on the leeward side thereof are not on the same axis, the ration of the diameter of the holes of the windward side to that of the holes of the leeward side is 8:1 to 1:1, and the windward side and the leeward side are separated by a strut.

The invention discloses a design method of a viscous mud-flow triangle base drainage canal optimum hydraulic section and the application thereof. The invention aims at the disadvantages in the prior art that the calculation method of the drainage canal optimum hydraulic section in the triangle base drainage canal design is complicated and no unique definite value can be obtained. The invention provides the design method of the viscous mud-flow triangle base drainage canal optimum hydraulic section. The method includes the following steps: calculating the size parameter F and the characteristic parameter S of the drainage canal optimum hydraulic section; then calculating the drainage canal hydraulic radius R; and finally the width W and the depth H of the optimum hydraulic section. The method is applicable to the control of the viscous mud-flow and coordinate use with other backbone type blocking projects. Compared with the prior art, the method can reasonably determine the shape and the size of the triangle base drainage canal optimum hydraulic section with unique definite value of the calculation result, effective, rapid and convenient calculation, thereby being applicable to the practical engineering.

The invention provides a method for preparing a vertical rockfall blocking net, comprising the steps as follows: the strength and range of slope protection are determined and the construction condition is determined; a supporting structure of the rockfall protecting net is arranged on the slope; wasted tyre nets are arranged; and the clearance of the wasted tyre nets is filled up. The method not only can achieve the objective of preventing and reducing the rockfall disasters, but also can achieve the national strategic objective of utilizing the waste resource by consuming a plurality of wasted tyre.

The invention discloses a shed-tunnel structure of a flexible structure layer and a construction method thereof, comprising an elastic foundation structure and a flexible structure layer, wherein theelastic foundation structure comprises a concrete foundation, an elastic device and a support column; the concrete foundation is provided with a groove; the elastic device is arranged in the groove, and the upper surface and the lower surface of the elastic device are provided with a cushion layer; the bottom of the support column is wrapped with an anti-slip rubber sleeve at the contact part withthe groove; the flexible structure layer comprises a plurality of flexible buffer layers arranged in the backfilled soil layer and a flexible planting layer arranged at the top; and the flexible buffer layer and the flexible planting layer are arranged and fixed together by waste tires in turn; the upper part of the flexible planting layer is provided with a steel wire mesh. The shed-tunnel structure of a flexible structure layer not only can resist the impact of the debris flow and the debris flow, but also has the ecological function of beautifying the ecological environment.

The invention relates to an anti-dazzle principle based design method for traffic engineering facilities at a road tunnel exit. The method is characterized in that tunnel exit anti-dazzle facilities are arranged in front of the tunnel exit to ease intensive brightness transition caused by insufficient illuminating lamps at the tunnel exit; coloured painting materials of which reflection coefficients gradually reduce are arranged on the tunnel ceiling, side walls and roads from the top down to ease brightness transition and beam divergence at the tunnel exit, so as to lift the dazzle area, reduce the dazzle area below the visual line of a driver and increase the visual adaptation time; horizontal road direction lines and road lane keeping lines are arranged on the road, and side wall vertical direction lines and side wall double-layered contour marks are arranged on the side walls, so as to form a closed mid-frequency retroreflective information stream together; high-frequency red and white marked lines arranged on maintenance road edges and road side reflective raised route markers form a high frequency visual information stream to increase the driver's instantaneous velocity sensation, and promote the driver's speed feeling and distance feeling, and accordingly, the coordination and unification of the tunnel lighting energy conservation and tunnel traffic safety are realized.

The invention relates to a process for prefabricating windproof open hole components in a circular production line, including mold steam curing, demoulding operations, cooling and secondary steam curing, placement of steel cages and embedded parts, concrete pouring, vibration supplementation, initial plastering, and static stop And cleaning the mold, second plastering, curing in the steam curing area, and so on, the prefabrication work of the windproof open hole components will be completed in a cycle; marking and storage; the finished product will leave the factory. This process solves the problems of low work efficiency and difficult quality control of the prefabrication of windproof open tunnel components in windy areas. It has the characteristics of ensuring work efficiency, shortening the construction period, and easy quality control, and effectively reduces the overall construction cost.

The invention provides a method for treating dangerous rock bodies of an expressway tunnel entrance. The method for treating the dangerous rock bodies of the expressway tunnel entrance comprises the following steps of clearing the dangerous rock bodies within a tunnel entrance slope range before the excavation of the tunnel entrance; carrying out spray anchor protection within the tunnel entrancedangerous rock body range according to a design drawing; arranging a passive protection net within the dangerous rock body range at a slope position above the tunnel entrance so as to effectively protect against loose rockfalls caused by blasting disturbance, weather reasons and geological reasons on the upside in the main tunnel construction process; and after the geological condition within theslope dangerous rock body range is comparatively stable, implementing an active protection net within the dangerous rock body range by using an anchoring rod of shotcrete-bolt support so as to furtherincrease safety coefficients of tunnel construction period and operational period.