51results about How to "Improve typhoon resistance" patented technology

The invention discloses a combined wind wave and current resistant net cage and a working method thereof. The combined wind wave and current resistant net cage comprises a high-density polyethylene (HDPE) integrated framework and net cage bodies, and is characterized in that a plurality of square net cage units are arranged in the integrated framework formed by an HDPE tube; floating rope frames formed by a high-intensity fiber rope are arranged at the peripheries of the square net cage units below each edge of the HDPE integrated framework; a plurality of net cage bodies are arranged in the floating rope frames; and every two adjacent net cage bodies in the same square net cage unit are fixed by a multi-net-cage connector. The combined wind wave and current resistant net cage has excellent wind wave and current resistance, can keep the shapes of the net cage bodies stable and is structurally similar to the conventional fish raft; on the premise that water inside and outside the net cage can be well exchanged, the flowing deformation performance of the net is improved thoroughly; and furthermore, cultivation is convenient to manage; and the facility investment is relatively low.

The invention aims to provide a floating type marine wind energy and wave energy hybrid power generation platform which comprises a vertical shaft wind driven generator, an oscillating type wave power generating device and a floating body, wherein the vertical shaft wind driven generator and the oscillating type wave power generating device are respectively arranged on the floating body; the oscillating type wave power generating device comprises a floater, an oscillating rod and a wave power generator; the floater is connected with the oscillating rod, and the oscillating rod is connected with the wave power generator through a wave motion reversing device; and the wave power generator is connected with an energy storage device through a power conversion device. According to the floating type marine wind energy and wave energy hybrid power generation platform, the application range of the hybrid power generation platform is expanded, the stability and the safety performance of the power generation platform are improved, the construction cost and the maintenance cost are reduced, and the power generation efficiency is improved by active stall control and phase change control, so that the floating type marine wind energy and wave energy hybrid power generation platform is a reliable offshore power generation platform.

The invention relates to a method and device for recognizing a critical path of a power grid under the condition of typhoon damage. The method comprises the following steps: recognizing lines of a line fault set of the power grid under the condition of the typhoon damage; calculating the fault probability of the various lines in the line fault set; calculating direct load loss and potential load loss after running stopping due to line fault; calculating local risks of running stopping of the lines; and calculating global risks of the lines of the fault set under various predicted paths, wherein the criticality of the lines is increased along with increasing of the global risks. According to the technical scheme, geographical position distribution of a tower and lines in a power grid geographic information distribution system is fully considered, real-time typhoon prediction information in a typhoon weather forecast system is adopted fully, reference is provided for formulation of an effective wind prevention and reinforcement strategy for the power grid by calculated power grid critical lines under the condition of typhoon damage, and the typhoon resistance of the power grid is improve favorably.

The invention discloses a deepwater net cage with a front streamline floating pipe outer frame. The deepwater net cage comprises a floating pipe frame, netting and a mooring system, the floating pipe frame is provided with the front streamline floating pipe outer frame, the front streamline floating pipe outer frame is composed of a front connecting piece, two outwards-protruding arc-shaped main floating pipes, two bent pipe connecting pieces and a back main floating pipe, the front ends of the two outwards-protruding arc-shaped main floating pipes are connected through the front connecting piece, and the back ends of the two outwards-protruding arc-shaped main floating pipes are connected with the two ends of the back main floating pipe respectively through the two bent pipe connecting pieces; in addition, a box tying point is arranged on the front connecting piece. The mooring system comprises an anchor, an anchor rope and an anchor rope weight, the anchor is sunk into the seabed, the lower end of the anchor rope is connected with the anchor, the upper end of the anchor rope is connected with the box tying point, the anchor rope weight is tied and hung on the anchor rope, and the length of the part, located between a tying and hanging point of the anchor rope weight and the upper end of the anchor rope, of the anchor rope approximates the lowest water level water depth of the position of the anchor.

A submerged net cage structurally comprises an outer frame system, an inner frame, net and counterweight system, a lifting system and a mooring system. The outer frame system comprises an outer frame (1), and the inner frame, net and counterweight system comprises an inner frame (2), netting (4) and a counterweight. The lifting system comprises a transmission device, a sliding wheel system and a control device. The outer frame system can serve as the foundation of the inner frame, net and counterweight system due to weight of the netting and the counterweight, and the inner frame, net and counterweight system is controlled by the lifting system to float in water. The mooring system comprises anchor ropes (10) and anchors (11), and the mooring system is connected with the outer frame (1) through the anchor ropes (10). The submerged net cage can easily ascend and descend, synchronization of floating and submergence is good through a mechanical device, and cost is low.

The invention provides an improved main frame of an offshore net cage. The main frame consists of a floating pipe, and is characterized in that the floating pipe is a hollow elliptical pipe with a horizontal long axis and is prepared by processing a round pipe with relative draught of 10%-20%, and the relative draught refers to the percentage of the ratio of the amount of draught to the blank diameter before flattening. The improved main frame for the offshore net cage is reasonable in structure, high in operability, saved in cost, steady in connection, and improved in stability, anti-typhoon capability and risk prevention capability; and the main frame is mainly used for improving the strength and improving the wind and wave prevention level on the premise of not changing the overall size of an existing main frame, promoting offshore net cage culture to deep open sea areas, and realizing safe culture production in open sea areas with water depth of 20-60m.

The invention discloses an anti-typhoon agricultural greenhouse which comprises a framework. The framework comprises a row of arch bars arranged in the length direction of the greenhouse. The arch bars are covered with thin films and include the top arch bars in obtuse triangle shapes and lateral arch bars arranged to be inclined relative to the horizontal plane. The bottoms of the lateral arch bars are supported at the inner top of a foundation and connected with the top arch bars. A top pull bar is arranged at the top of the framework in the length direction to connect the tops of the top arch bars in series. The left side and the right side of the framework are respectively provided with a lateral pull bar in the length direction. The lateral arch bars are connected with the top arch bars through the lateral pull bars. A film reeling device is arranged on the framework to reel the thin films. By means of the anti-typhoon agricultural greenhouse, in order to strengthen the anti-typhoon capacity of the greenhouse, the structure of the framework of the greenhouse is firstly strengthened, then the film reeling device is arranged, and the anti-typhoon capacity of the greenhouse is finally improved through the technical measures.

The invention belongs to the field of power conveying equipment, and particularly relates to a value limiting stress concrete electric pole. The value limiting stress concrete electric pole comprisesa reinforced concrete pole body, the cross section of the reinforced concrete pole body is an annular surface, the pole body is in a conical shape, the taper is 1 to 75, and the top end of the pole body is provided with a concrete top cover. The pole body comprises a steel bar skeleton and a concrete protective layer. The steel bar skeleton is wrapped with the concrete protective layer. The steelbar skeleton comprises main ribs, auxiliary ribs, an erection bar and a helical bar. According to the value limiting stress concrete electric pole, the main bars and the auxiliary bars adopt PC steelplates, by applying different stress, the comprehensive performance of the electric pole is improved, steel materials are saved, and the production efficiency is improved.

The invention discloses a fish raft net cage prepared from steel material. The fish raft net cage prepared from steel material comprises a net cage body, the net cage body is connected with a floating steel frame, the floating steel frame is composed of steel pipes in a connecting mode, wherein each steel pipe is 245 to 610 millimeters in diameter and 1 to 10 millimeters in wall thickness, the inside of each steel pipe is hollow, and the steel pipes are connected to form the floating steel frame with closed pipelines; bends of the floating steel frame are connected by elbows, the parts of the steel pipes to be connected without bends are connected through welding and fixing after cutting to form matched nicks, a steel pedal with 70 centimeters in width is welded above the steel frame, and a steel frame guardrail with 60 centimeters in height is welded on the pedal; a working platform is welded at one side of the steel frame through a triangular steel plate. According to the fish raft net cage prepared from steel material, the large-diameter steel pipes serve as the fish raft framework and also serve as a buoyancy device, the fish raft firmness and stability are obviously improved, and the safety of the poultry feeders is guaranteed through the steel frames at the two sides of the passage. Net cages can form a large net cage group through connecting; the fish raft net cage prepared from steel material facilitates work and management and increases the typhoon resistance ability.

The invention relates to a bird repelling device for power equipment. The bird repelling device comprises a wing-shaped screw, a mounting base and a bird repelling device body, wherein the bird repelling device body comprises a vertical column, a connecting column, a bird repelling mechanism arranged on the vertical column and a wind cup lifting mechanism arranged on the connecting column. The bird repelling device has the advantages that the bird repelling mechanism and the vertical column are fixedly connected in a plug pin mode, mounting is convenient, meanwhile, in the transportation process, the bird repelling mechanism and the vertical column can be detached, then in the mounting and transportation process, the occupied space can be reduced, and transportation is convenient; besides,the wind cup lifting mechanism adopts a telescopic wind cup, and when typhoon, storm and sudden weather change or transportation occurs, the wind cup can be contracted to get close to the connectingcolumn and descend to the vertical column through the lifting device; and after the typhoon and storm or during normal using, the lifting device lifts the wind cup to the high altitude again, the windcup is unfolded, and therefore transportation is facilitated, and the wind cup has the high function of resisting severe weather environments such as typhoon and storm.

The invention relates to the technical field of power transmission lines, and discloses a coastal region tower anti-typhoon design method which comprises the following steps: S1, designing the maximum typhoon wind speed according to a known typhoon wind speed time history curve; s2, calculating a tower wind pressure height change coefficient according to a wind pressure height coefficient designed during tower anti-typhoon design; s3, according to the designed typhoon maximum wind speed and the calculated tower wind pressure height change coefficient, the tower ground wire wind load and the tower body wind load are calculated; the method has the advantages that windproof technical guidance can be provided for the power transmission line, and the typhoon resisting capacity of the power transmission line is effectively improved.

The invention provides an integrated typhoon-proof tree seedling raising and transplanting method, which comprises two steps of seedling raising and transplanting, wherein the seedling raising comprises the following steps of: A1, digging a seedling raising hole, and placing a hydrophilic supporting structure at the bottom of the seedling raising hole; A2, placing the tree seedlings right above the hydrophilic supporting structure, and filling and compacting the seedling hole by using reinforcing rib type matrix; A3, curing; the transplanting comprises the following steps of: B1, starting planting, wherein the root of a plant is provided with a soil ball, the soil ball comprises a hydrophilic supporting structure, and a circular ring is positioned on the outer side of the soil ball; B2, digging a planting hole, and arranging a ground nail in the circular ring, wherein a ground nail penetrates through the circular ring and is driven into the bottom of the planting hole; B3, backfillinghigh-permeability matrix into the planting hole and compacting; B4: carrying out maintenance. The method has simple installation process and low economic cost, and enhances the typhoon resistance of the trees through the reinforcement of the ground nails; moreover, a large number of root systems are attached to the hydrophilic supporting structure by utilizing the water-facing property of the rootsystems, so that the integration strength and the later-stage wind and rain resistance of the trees are enhanced.

The invention discloses a contact rail traction system of urban rail transit and belongs to the technical field of urban rail transit. Arresters are arranged and connected with a contact rail and a steel rail respectively to form system comprehensive lightning protection; a contact rail on the ground surface section is provided with a novel UPVC (unplasticized polyvinyl chloride) protective cover, the contact rail system is further provided with a contact rail electrified display device, an emergency power shutoff press-button control system, a trolley conductor conductive device and a visualized grounding device; the arresters are arranged every 300 meters on a track line of elevated sections, demands of all related system devices are comprehensively taken into consideration in characteristics of the arresters; arrestors are arranged on the busbar of cathode cabinets of a corresponding traction substation in order to prevent lightning waves from leading to the cathode cabinets of the traction substation through a return cable and further damages to electrical equipment can be avoided. The contract rail traction system of the urban rail transit improves reliability of the traction power supply system of the urban rail transit and reduces failure rate and maintenance costs.

The invention relates to walls, in particular to a typhoon-resistance earthquake-resistance strengthening device for a wall. In the device, a ring beam is horizontally distributed at the top end of the wall; the bottom of the wall forms the wall bottom end; a keel vertical to a horizontal plane is distributed at the lateral end of the wall; and the wall bottom end and the keel form a vertical included angle. The device is characterized in that: a reinforcing component is vertically distributed between the ring beam and the wall bottom end; the ring beam is provided with a fastening component; the wall bottom end is provided with a pre-embedded component; the fastening component is engaged with the head end of the reinforcing component; the pre-embedded component is engaged with the tail end of the reinforcing component; and the reinforcing component is parallel to the keel. Through the existence of the reinforcing component, a structure capable of assistant fixing is added to the wall based on the inherent structure thereof so as to strengthen the whole wall and improve the typhoon-resistance and earthquake-resistance effect of the wall. The device is simple to implement and convenient to adjust, and can be applied to house constructions in all light wood structures, in particular to single-storey constructions.

The invention discloses a wind driven generator and a typhoon-resisting method of the wind driven generator. The wind driven generator comprises a tower drum and two blades fixed to the upper end of the tower drum. A rotating driving mechanism drives the blades to be perpendicular or parallel to the tower drum, and a telescopic mechanical arm is arranged on the side wall, corresponding to the blades, of the tower drum; a clamping portion is arranged at the front end of the mechanical arm, and after the mechanical arm stretches out, and the blades are parallel to the tower drum, the clamping portion can clamp the blades. When the typhoon rises, the rotating driving mechanism drives the blades to rotate, and therefore the blades are in the state of being parallel to the tower drum; then, the mechanical arm stretches out, the clamping portion clamps the blades, and the blades are clenched to enable the blades and the upper portion of the tower drum to form an integral structure; wind borne by the blades is conducted to the foundation of the tower drum through the mechanical arm, and therefore the blades and the upper portion of the tower drum mutually reinforce the typhoon resisting capacity; the wind is blown away from the two sides of the tower drum, and the wind of the upper portion of the tower drum is further relieved, so that the typhoon-resisting capacity of the upper portion and the whole body of the wind driven generator is reinforced.

The invention relates to disturbing flow devices, wind vortex devices with the disturbing flow devices and a perpendicular shaft wind power generator set. The disturbing flow devices are used for thewind vortex devices of the perpendicular shaft wind power generator set and spirally extend on the outer surfaces of blades of the wind vortex devices in the axial directions of the wind vortex devices. According to the disturbing flow devices, the wind vortex devices with the disturbing flow devices and the perpendicular shaft wind power generator set, by means of the manner that the disturbing flow devices are arranged on the outer surfaces of the blades, the wind vortex devices are made to reduce the vortex-induced vibration effect of the blades, and the anti-typhoon efficacy of the perpendicular shaft wind power generator set can also be enhanced at the same time.

The invention discloses an anti-typhoon structure of a wind generating set. The structure comprises a bearing plate, the bottom of the bearing plate is fixedly connected with a seabed inserting anchor, a tower drum is arranged on the middle point of the top of the bearing plate, blades are arranged on the top end of the tower drum, the top of the bearing plate is fixedly connected with four main supporting columns, the four main supporting columns are fixedly connected to the four corners of the top of the bearing plate, the sides, close to the tower drum, of the main supporting columns are fixedly connected with the tower drum, two adjacent main supporting columns are fixedly connected through connecting blocks, grooves are formed in the middle points of the sides, away from of the towerdrum, of the connecting blocks, and pressing blocks are arranged in the grooves. The structure is simple, cost is low, the influence and the damage of the typhoon on the tower drum can be effectivelyreduced, the effect is obvious, investment cost is reduced, daily operating efficiency of the wind generating set can be ensured, and economy is high.

The invention relates to an offshore anti-typhoon ship-shaped wind power generation platform. A rotating shaft is rotationally connected to the top of a placement disc in a storage groove in a penetrating mode, a wind gathering plate on the outer wall of the rotating shaft is located above the placement disc, springs are fixedly connected to the top ends, slidably connected with sliding plates, of the two sides of the rotating shaft, and the top ends of the two springs are fixedly connected with the same disc; the inner wall of the top of the transmission groove is rotationally connected with a fluted disc arranged on the outer side of the rotating shaft in a sleeving mode, two symmetrical grooves are formed in the inner wall of the fluted disc, an output shaft of the generator at the bottom of the transmission groove is fixedly connected with a third gear engaged with the fluted disc, and the top of the containing disc is provided with a descending assembly used for enabling the containing disc to descend. A stabilizing assembly used for improving the stability of the ship body is arranged in the transmission groove, and a control assembly used for controlling the draught depth of the ship body is arranged in the containing groove. The problems that an existing sea surface wind driven generator placing platform is prone to overturning, wind power is too large, blades of a generator are damaged, and the service life of the generator is affected are solved.

The invention discloses a method of establishing a fruit-wood forest of Carya illinoinensis. The method comprises the steps of 1) selecting a forestation site; 2) selecting a land preparation mode; 3)selecting varieties; 4) selecting plantlets; 5) carrying out field planting; and 6) providing post-planting management. The method is suitable for cultivating high-quality large-size fruits under high yield, and is also suitable for cultivating high-quality wood which grows fast and has high yield; the method also helps provide technical support for establishing farmland forest networks, protective forests and river channel forestation through Carya illinoinensis; the method has significant economic, social and economic benefits.

The invention relates to an anti-typhoon device and a model selection method of an anti-wind rod. The anti-typhoon device comprises a first clamping seat, a second clamping seat, a transmission assembly and the anti-wind rod; the first clamping seat and the second clamping seat are oppositely arranged in a spaced mode; and the transmission assembly comprises a flexible cable, one end of the flexible cable is used for being connected with the anti-wind rod, and the two opposite ends of the anti-wind rod can be separately clamped in the first clamping seat and the second clamping seat correspondingly. The uniformly-distributed line load q is obtained through the gustiness factor beta<gz>, the wind load local shape factor mu<s1>, the wind pressure height variation factor mu<z>, a basic wind pressure rough value wo and the stress breadth s at the height z of a door body, according to the uniformly-distributed line load q, the anti-wind rod is subjected to model pre-selection, checking andexamination are conducted from the two aspects of the maximum bending normal stress sigma<max> of the pre-selected anti-wind rod and the maximum deflection Y<max> of the pre-selected anti-wind rod, thus a model selected for the anti-wind rod is determined; and according to the anti-typhoon device and the model selection method of the anti-wind rod, the anti-typhoon capacity of the door body can beenhanced at a low cost.

The invention aims to provide a floating type marine wind energy and wave energy hybrid power generation platform which comprises a vertical shaft wind driven generator, an oscillating type wave power generating device and a floating body, wherein the vertical shaft wind driven generator and the oscillating type wave power generating device are respectively arranged on the floating body; the oscillating type wave power generating device comprises a floater, an oscillating rod and a wave power generator; the floater is connected with the oscillating rod, and the oscillating rod is connected with the wave power generator through a wave motion reversing device; and the wave power generator is connected with an energy storage device through a power conversion device. According to the floating type marine wind energy and wave energy hybrid power generation platform, the application range of the hybrid power generation platform is expanded, the stability and the safety performance of the power generation platform are improved, the construction cost and the maintenance cost are reduced, and the power generation efficiency is improved by active stall control and phase change control, so that the floating type marine wind energy and wave energy hybrid power generation platform is a reliable offshore power generation platform.

The invention discloses a comprehensive detection method for a simulation test for the typhoon resistant capacity of an ADSS (all dielectric self-supporting optical fiber cable) under extreme conditions. The method comprises the following steps: S1, the ADSS is erected between two fixed ends with a 45 m distance, no less than 50% of the maximum mounting horizontal tension of the ADSS is loaded, and the vibration frequency is adjusted in a range of 5-10 Hz, so that the galloping amplitude of the ADSS ranges from 1 to 2; the galloping is continued for 105 times; S2, OTDR (optical time domain reflectometry) optical attenuation test equipment is adopted to monitor additional attenuation of the ADSS; S2, the ADSS is subjected to a tensile property test; S4, if the additional attenuation of the ADSS in the step 2 is not greater than 0.1 dB / km and the residual tensile strength of the ADSS in the step 3 is not less than 95% RTS (rated tensile strength), the typhoon resistant capacity of ADSS meets design requirements. According to the comprehensive detection method, a test verification method for the typhoon resistant capacity of the ADSS is established, the motion mode and track of the ADSS under the typhoon condition are simulated, a technological means is provided for evaluating the typhoon resistant capacity of the ADSS, a selection method is provided for improving the typhoon resistant capacity of the ADSS in coastal areas, the possibility of faults is reduced, and the typhoon resistant capacity of communication lines of a power grid is improved.

The invention relates to crane equipment, in particular to a windproof reinforcing method of cranes. The windproof reinforcing method of the cranes is provided aiming at the potential safety hazard defect that existing outdoor crane reinforcing manners cannot effectively withstand typhoons, so that the cranes are blown by strong wind to tip over. By means of the reinforcing method, the parking safety of the cranes used outdoors in the typhoons is improved, and the accident that the cranes are blown down by the typhoons to tip over is avoided. Particularly, limiting devices are put on a wheel track to limit movement of wheels, door frames of the cranes and the ground are in anchored connection through steel wire ropes, the multiple cranes moving on the same wheel track cling together to bebound end to end, the cranes are fixed relative to the surrounding ground, the anti-typhoon capacity of the cranes is improved, it is guaranteed that the cranes can be kept stable in the severe typhoons and cannot be blown to tip over, and three reinforcing methods can be selected at will and combined to be used.

The invention discloses a flat type solar water heater. A heat collection tube of the conventional solar water heater is a glass vacuum tube, the preparation process for the glass vacuum tube is complex, the process requirement is high, required accuracy during installation is high, and the glass tube is easy to break during use and unsafe. A heat absorption medium and a heat accumulation medium which are adopted by the flat type solar water heater are unreasonable, so the heat collection efficiency is low. In the flat type solar water heater, copper with high heat absorption performance is used as a heat absorption layer, nickel with high heat collection performance is used as a heat collection layer, aluminum with high radiating performance is used as an inner core, and a heat collection plate formed by combining the heat absorption layer, the heat collection layer and the inner core collects solar heat to a maximum limit to heat water. The flat type solar water heater has the characteristics of light self weight, high water storage capacity, low cost, high sealing performance, no maintenance, no replacement of a seal ring, no bursting, no influence of scale deposits on normal use and long service life, and is easy to install.

The invention relates to a wall body strengthening device for resisting an earthquake and a typhoon and relates to a wall body. A ring beam is horizontally distributed at the top end of the wall body and is connected with a roof truss; the bottom of the wall body forms the bottom end of the wall body; a grid is arranged between the ring beam and the bottom end of the wall body; keels vertical to the horizontal plane are distributed on the side surfaces of the wall body; vertical included angles are formed respectively between the ring beam and the keels, between the grid and the keels as well as between the bottom end of wall body and the keels. The invention is characterized in that connecting holes distributed correspondingly are longitudinally penetrated on the ring beam and the grid; strengthening components are arranged in the vertical included angles and include fixing angle irons, threaded connecting rods and fastening components, wherein the threaded connecting rods are fixedly connected with the wall body after penetrating through the fixing angle irons and the connecting holes, and the fastening components are arranged at both ends of the threaded connecting rods. By virtue of the combination of the threaded connecting rods and the fixing angle irons, the structure for auxiliary fixing is added on the wall body based on the inherent framework of the wall body, thereby strengthening the whole wall body and improving the effects of resisting the typhoon and the earthquake of the wall body.

The invention provides a steel skeleton parapet structure, which comprises one or more skeleton units. Each skeleton unit comprises a main body and two supporting bodies, wherein each main body comprises two main steel columns which are arranged in parallel and in a spaced mode, a plurality of cross steel beams which are arranged at intervals are connected between the two main steel columns from top to bottom, and a closed masonry wall layer formed by a plurality of building blocks is filled between every two adjacent cross steel beams; the two supporting bodies are connected to the two ends of each main body correspondingly, and located on the same side of each main body; and each supporting body at least comprises a supporting steel column, a first diagonal brace beam and a second diagonal brace beam, the two ends of the first diagonal brace beams are connected with the upper ends of the supporting steel columns and the lower ends of the main steel columns correspondingly, and the two ends of the second diagonal brace beams are connected with the lower ends of the supporting steel columns and the upper ends of the main steel columns correspondingly. According to the steel skeleton parapet structure, the main bodies are supported through the supporting bodies, stress is reasonable, lateral stiffness resistance is large, construction measures are reliable, and the anti-violenttyphoon and anti-seismic properties are enhanced.

The invention discloses a multifunctional protective guardrail for a construction site. The technical problems that for an existing protective guardrail for the site, disassembling and assembling arecomplex, materials are wasted, and the wind resistance is poor are solved. The multifunctional protective guardrail for the construction site comprises at least two supporting rods which are arrangedat intervals, the supporting rods are fixedly arranged in concrete through expansion bolts, the supporting rods with the corresponding quantity can be arranged according to the actual demands, a stabilizing rod is clamped between every two adjacent supporting rods, a propagandizing protective plate is fixedly arranged on the stabilizing rods, the culture propaganda effect can be achieved on the basis that the functions of the protective guardrail are achieved, the effect of civilized construction is achieved, the propagandizing protective plate is provided with air holes, and the wind resistance can be effectively enhanced through the air holes. According to the multifunctional protective guardrail for the construction site, instrumental and finalized protection can be achieved, the typhoon resisting capability is improved, quick assembling and disassembling functions are achieved, turnover use can be achieved, materials are saved, and the propaganda and protection integration effect can be achieved; and the structure is simple, operation is easy and convenient, and wide-range use and popularization can be achieved.