170results about How to "Increase anchoring force" patented technology

The utility model provides an anchoring device for preventing landslide geological disasters, and relates to the technical field of anchoring equipment, the anchoring device comprises an anchor rod assembly, a transmission assembly is arranged in the anchor rod assembly, the transmission assembly comprises a lead screw rotationally connected to the inner wall of the anchor rod assembly, and the upper end of the lead screw penetrates through the top surface of the anchor rod assembly. According to the anchoring device for preventing the landslide geological disaster, a sliding block and a first trapezoidal block can be driven to extrude a second trapezoidal block through rotation of a lead screw, and then the second trapezoidal block drives a push plate and a spine block to move towards the outer side of an anchor rod body till the push plate and the spine block are inserted into soil; the firmness of the device is effectively improved by inserting the push plate and the spine blocks into soil, the anchoring capacity is improved, the device can rapidly anchor the protective net and the protective plate, the anchoring effect is good, and practicability is high.

The invention discloses a reinforcement grouting method for a large-scale high-pressure water-rich alteration tectonic zone. The invention aims to solve the technical problem that inrush is easily caused in a construction environment of a large-scale high-pressure water-rich alteration structural belt with poor self-stability. The anchoring capacity of the grout-stopping wall can be improved through the embedded steel bars embedded in the surrounding rock and the wall body, it is guaranteed that the grouting pressure can be resisted during high-pressure grouting, the grout-stopping wall is prevented from being extruded to retreat, and therefore the stability of the tunnel face is guaranteed. Besides, before reinforcing grouting of the unstable stratum, the grout stopping wall is reinforced in advance, so that a stress whole is formed between the grout stopping wall and surrounding rock in front of the grout stopping wall, and therefore the inrush prevention capacity of the grout stopping wall and the drawing resistance of the orifice pipe are improved. In addition, the orifice pipe is arranged before drilling grouting is started, and the orifice pipe can serve as a guide pipe and a grouting connector and can resist high-pressure grouting counter-acting force through large friction force generated after anchoring of the orifice pipe. And the grouting holes in different positions are selected for selection verification of the grout and the grouting mode, so that the stratum can be better reinforced, and the safety of subsequent excavation construction is ensured.

The invention belongs to the technical field of slope supporting, discloses a slip-releasing slope surface supporting method based on a grouting steel pipe pile-lattice beam pre-stressed anchor cable, and aims to solve the problem that in an existing supporting system, a grouting steel pipe pile cannot provide enough shear capacity for a soil body around the pre-stressed anchor cable. The method comprises the following steps: (1) slope treatment; (2) surveying and setting out are conducted, and the positions of the pre-stressed anchor cables and the grouting steel pipe piles are determined; the pre-stressed anchor cables and the grouting steel pipe piles are arranged in a staggered mode. (3) pre-stressed anchor cables and grouting steel pipe piles are constructed; the pre-stressed anchor cables and the grouting steel pipe piles are arranged in the rock-soil body in the direction perpendicular to the slope surface of the side slope. And (4) lattice beam construction, wherein each connecting node of the lattice beam corresponds to a pre-stressed anchor cable or a grouting steel pipe pile. By changing the arrangement mode of the grouting steel pipe piles, the grouting steel pipe piles can provide more shear resistance for soil around the pre-stressed anchor cables, and then the stability of slope supporting is improved.

The invention relates to the technical field of pesticide residue detection, in particular to a fruit pesticide residue detection device and a using method thereof.The fruit pesticide residue detection device comprises a pedestal and a collecting mechanism, the collecting mechanism comprises a collecting barrel, the inner side of the collecting barrel is fixedly connected with a collecting hopper, and the bottom end of the collecting hopper is fixedly connected with a circulating pump; the input end of the circulating pump is communicated with the inner side of the bottom end of the collecting hopper, the bottom end of the collecting barrel is fixedly connected with an inlet pipe, the top end of the inlet pipe is communicated with the output end of the circulating pump, and the outer side of the bottom end of the inlet pipe is fixedly connected with an elastic plate which is transversely distributed. A sampling reagent can be directly used for collecting and absorbing surface pesticide residues on the surface of a fruit in a fixed area, so that the detection process can be greatly ensured, the sample quantity collection difference caused by fruit sample difference is reduced, the effective collection quantity is increased, the error caused by neglecting the difference of different fruit peels can be reduced, and the detection accuracy is improved. The accuracy of a fruit detection result is ensured.

The invention relates to an improved novel wall connecting piece, and relates to the technical field of building construction, the improved novel wall connecting piece is mounted on a wall template so as to be conveniently embedded in a wall, the wall connecting piece comprises a connecting piece inserted into the wall template, the connecting piece penetrates through the wall template so as to form an overhanging end on the inner side of the wall template, and the overhanging end is connected with the wall template through a connecting rod. A connecting end is formed on the outer side of the wall formwork, the width of the end, away from the wall formwork, of the anchoring part is enlarged to form an anchoring part expanding head, more contact parts are increased during concrete pouring through the anchoring part expanding head, and after the concrete is completely dried to form the wall, the anchoring part expanding head is expanded to form the anchoring part. The anchoring part can generate a larger contact area during concrete pouring, then the connecting part is connected with the anchoring part, the anchoring part expanding head is reliably connected with the wall body, and the connecting effect is improved by generating more contact parts between the anchoring part expanding head and the wall body; and the wall connecting piece cannot deviate or fall off in the concrete pouring and vibrating operation process.

The utility model discloses a special-shaped expanding anchoring body. The anchoring body of an anchor rod cable is in a full-length expanding mode or comprises an upper section and an expanding section. When the anchoring body is expanded in the full length, the anchoring body comprises an inner-layer structure and an outer-layer structure, and when the anchoring body comprises an upper section and an expanding section, the expanding section still comprises the inner-layer structure and the outer-layer structure; the inner layer structure comprises an inner core consolidation body and reinforcing bars, and the reinforcing bars are wrapped in the inner core consolidation body in the transverse direction; the reinforcing bars comprise anchor bars; the outer-layer structure is an outer-layer consolidation body without reinforcing bars, or the diameter of the outer-layer consolidation body is larger than that of the upper section at the same time; the strength of the inner core consolidation body is higher than that of the outer layer consolidation body; the consolidation agent conveying pipeline and the discharge outlet for forming the outer layer consolidation body through pouring and the consolidation agent conveying pipeline and the discharge outlet for forming the inner core consolidation body through pouring are respectively arranged on different machines and tools; and the inner core consolidation body and the outer layer consolidation body are directly bonded, or the expanded section is provided with a corrugated pipe along the longitudinal direction, and the outer layer consolidation body is meshed with the inner core consolidation body through the corrugated pipe.

The invention discloses an inorganic facing layer thermal insulation decorative plate and an outer wall external thermal insulation system, belongs to the technical field of outer wall thermal insulation decorative plates, and aims to overcome the defects that a decorative panel in an existing thermal insulation decorative plate is easy to fall off from an outer wall and the anchoring force is small. The heat preservation plate and the decorative surface layer are connected together through the inorganic composite layer, the multiple built-in anchor rods are arranged in the middle area of the heat preservation plate, and the anchor plates fixedly connected with the built-in anchor rods are arranged in the inorganic composite layer or the decorative surface layer, so that inorganic bonding of the decorative surface layer and the heat preservation plate is achieved, and meanwhile the heat preservation plate and the decorative surface layer are bonded together. Connecting points for anchoring the insulation board are arranged on the inner side face of the insulation board, anchoring connection of the middle area of the insulation board is achieved, and the safety performance of the insulation decorative board is improved.

The invention discloses an umbrella rib type grouting anchor rod for supporting broken surrounding rocks and a grouting reinforcement method, and relates to the technical field of coal mine underground roadway surrounding rock control. The umbrella rib type grouting anchor rod comprises a replaceable pressure transmitting device, a steel hollow shell, an umbrella rib type grouting device and a central slurry conveying pipe. In an actual underground application scene, a roadway section which is supported by using a grouting anchor rod in advance is selected, drilling detection is carried out, a broken roof rock stratum to be grouted is measured, then an umbrella rib type grouting anchor rod is used for anchoring, accurate differential grouting reinforcement is carried out according to the actual breaking condition, umbrella rib type four-direction splitting grouting is matched, and the grouting effect of the broken roof rock stratum to be grouted is achieved. The anchoring force of the underground coal mine tunnel broken roof is enhanced; the row distance between anchor rod supports is accurately controlled through the slurry diffusion distance, and a dot-matrix gridding grouting reinforcement group is formed; and targeted grouting reinforcement of the equipment on the broken roof is effectively achieved, a grouting network is formed, the anchoring force of the anchor rod during coal mining under the broken roof is improved, and the safety of production operation is improved.

The utility model relates to an assembly type building supporting seat which effectively solves the problem that contradiction exists between the requirement for large anchoring force and the requirement for easy disassembly of an anchoring part. According to the technical scheme, the device comprises a bottom plate, a top plate and a plurality of anchoring units, each anchoring unit comprises a vertical anchor rod and two arc-shaped racks, the anchor rod penetrates through the top plate and the bottom plate, the two arc-shaped racks are symmetrically arranged on the two sides of the anchor rod in a left-right mode, one end of each arc-shaped rack is hinged to the bottom plate through a connecting arm, and a hinge shaft is coaxial with the arc-shaped racks; the left side and the right side of a rod body of the anchor rod are each fixedly provided with a straight rack, when the anchor rod moves downwards, the two straight racks can be meshed with the arc-shaped racks on the same side to drive the arc-shaped racks to rotate, the anchor rod is vertically inserted into a soil body, and the two arc-shaped racks can be inserted into the soil body along a circular track; the anchor rod can be pulled out with small pulling force when the anchor rod is dismantled while larger anchoring force is provided, and therefore the problem of contradiction between the anchoring force and the pulling force when the anchor rod is dismantled is solved.

The utility model relates to the technical field of building wall fixing tools, in particular to a combined heat preservation nail which comprises a sleeve, an anchor disc fixedly connected to one end of the sleeve, an expansion pipe detachably connected to the other end of the sleeve, an expansion screw expansion plug connected to one end of the expansion pipe in a sliding mode in the axial direction, and a screw rotationally arranged on the anchor disc, the sleeve and the expansion pipe in a penetrating mode. The screw rod penetrates through the expansion screw expansion plug in a threaded mode, and the expansion screw expansion plug is used for forcing the expansion pipe to expand. The expansion pipe and the sleeve are detachably connected, split installation of the expansion pipe and the sleeve is achieved, the sleeve or the expansion pipe with the adaptive length is installed according to a construction site, the overall length of the heat preservation nail can be adjusted, and the damaged expansion pipe or the damaged sleeve can be replaced conveniently.

The utility model discloses a sheet pile supporting structure which comprises supporting sheet piles used for supporting the wall of a foundation pit, supporting enclosing purlins used for supporting a plurality of adjacent supporting sheet piles at the same time and positioning sheet piles fixed to the periphery of the foundation pit, and the positioning sheet piles pull the supporting enclosing purlins through tension lines. And each supporting enclosing purlin is pulled by a group of positioning sheet piles through a group of tensioning wires. According to the utility model, the tensioning line is connected to the outer side of the supporting sheet pile to realize traction of the supporting sheet pile, so that a supporting system is prevented from being arranged in a foundation pit.

The embodiment of the present invention discloses a propylene glycol monovinyl ether and a synthesis method and application thereof. The propylene glycol monovinyl ether provided by the present invention contains a three-carbon structure in the molecule, which enhances the adsorption of the ethylene end and increases the anchoring force with the adsorbate. The polycarboxylic acid water reducer synthesized by using the propylene glycol monovinyl ether as an initiator to prepare a macromonomer has stronger adsorption to cement particles, and can improve the water reduction and plasticity of the water reducer. The synthesis method and application of the improved propylene glycol monovinyl ether of the present invention expand the channels and varieties of preferred polyether monomer initiators, and have broad application prospects.

The invention relates to static sounding equipment capable of being used for special scenes and a sounding method.The static sounding equipment comprises a probe rod, a probe, a telescopic clamping rod assembly, a driving mechanism, a ground anchor, a probe rod automatic loading and unloading assembly and a power supply assembly, the ground anchor is fixed to the top of a bank slope, and the driving mechanism is arranged on the side edge of the offshore side of the ground anchor; the telescopic clamping rod assembly is installed at the driving end of the driving mechanism, the probe rod can be installed on the offshore side of the telescopic clamping rod assembly through the probe rod automatic assembling and disassembling assembly, the driving mechanism can drive a probe to ascend and descend, and the power supply assembly is electrically connected with the driving mechanism. The probe rod is installed on the offshore side of the telescopic clamping rod assembly through the probe rod automatic loading and unloading assembly, the probe rod and the probe are driven by the telescopic clamping rod assembly to move to the position above a target detection point, the probe rod and the probe are driven by the driving mechanism to ascend and descend, detection point exploration testing of special terrains is achieved, the testable range is enlarged, and the testing efficiency is improved. The probe rod is automatically assembled and disassembled through the probe rod automatic assembling and disassembling assembly, and the safety of operators is guaranteed.

The utility model discloses a kind of steel wire rope anchoring devices for cantilevered scaffold, including connecting piece, connecting piece includes screw rod, the front end of screw rod is provided with protruding head, pre-buried sleeve is set on the outside of connecting piece, pre-buried sleeve includes thread section and expansion section, expansion section is located at the front end of pre-buried sleeve, expansion section outside is embedded with clamping plate, steel wire rope connecting block is set in the rear end of screw rod, steel wire rope connecting block includes pressing block and shell, pressing block is set in the inside of shell, spring b is arranged between the bottom of pressing block and shell.The utility model is pressed by pressing steel wire rope connecting block, steel wire rope passes, pressing block is lifted under the action of spring b, so that steel wire rope is clamped by shell and pressing block, so that connecting block can adapt to steel wire rope of different diameters, effectively prevent steel wire rope from sliding, and the expansion joint of expansion section and clamping plate design enhances anchoring force and adapts to concrete slight deformation, improves stability.

The utility model relates to a soil slope concrete protective wall template reinforcing member which is characterized in that the concrete protective wall template reinforcing member is composed of a ground anchor edge wood, a wedge-shaped wood and a tie bar, one end of the tie bar binds the ground anchor edge wood, and the other end of the tie bar fixes a template and the edge wood. Holes are punched in the soil slope, the anchoring reinforcing component is hammered to the underground preset depth, expansive cement mortar is injected into the holes, the anchoring force is further improved, the wedge-shaped wood is embedded between the two ground anchor edge woods under the hammering effect, the size of the anchoring end is increased, and therefore the anchoring effect is achieved. The fixing device is simple in structure, convenient to manufacture, capable of using local materials, cost-saving, labor-saving, easy in quality control, stable in template processing, not easy to deform, easy to recheck and position, reliable in use and capable of effectively solving the problems that a concrete surface protecting wall is difficult to fix, labor-consuming and labor-consuming, a template is expanded and deformed, and the construction cost of a reinforcing steel bar anchor rod and a qualitative fixing piece is high. The overall structure of the formwork is convenient to assemble and disassemble, after concrete is solidified, the reinforcing component and the surface protecting wall are tightly connected and jointly stressed, and the bearing capacity and durability of the surface protecting wall are effectively improved.

The invention discloses a foundation pit water leakage preventing structure, and relates to the technical field of foundation pit supporting, the foundation pit water leakage preventing structure comprises a foundation pit body, a concrete bottom plate is poured at the bottom of the inner wall of the foundation pit body, a clamping groove is formed in the upper end of the concrete bottom plate, a collecting water tank is arranged at the upper end of the foundation pit body, and a water tank connector is formed in the side end of the collecting water tank; the device comprises a foundation pit body, at least three supporting mechanisms are arranged on the side slope of the foundation pit body, each supporting mechanism comprises a sealing supporting plate, and two water flow boxes are arranged in each sealing supporting plate. The reinforcing anchor rod can be installed, and then the two side anchor columns on the reinforcing anchor rod are inserted into the foundation pit body to form a point which interacts with the interior of the foundation pit body, so that the anchoring force between the sealing supporting plate and surrounding soil or rock is improved, and the installation stability of the sealing supporting plate is improved.

The FRP rod type combined tie piece comprises a five-direction communicating structural piece, a reinforcing steel bar bolt and a fiber reinforced composite material rib, the five-direction communicating structural piece comprises two horizontal connecting pipes which are perpendicular to each other, and a vertical connecting pipe is arranged at the communicating point of the two horizontal connecting pipes; the two ends of the fiber reinforced composite material rib are inserted into the vertical connecting pipes of the two five-way communicating structural parts respectively and are fixedly connected with the five-way communicating structural parts in an inserted mode through the reinforcing steel bar plug pins, and the combined tying part is formed. In practical application, leaf plate steel bars of the sandwich thermal insulation wallboard directly penetrate into the two horizontal connecting pipes which are vertically arranged to form a binding-free three-dimensional steel bar net rack, and after concrete is poured, the pulling pieces and the concrete form a composite stress body through the occlusion effect of aggregate. In the building construction process, the construction efficiency is improved, the anchoring problem of the tie piece is solved, the overall mechanical property of the sandwich heat preservation wallboard is guaranteed, and the FRP tie piece has important significance for overcoming the defects of a common commercial FRP tie piece.

According to the composite positive plate and the preparation method thereof, the layered oxide and the polyanion material are respectively coated on the two plate surfaces of the mesh current collector, and the contact area between the positive slurry and the current collector is increased by using the meshes of the mesh current collector, so that the contact area between the current collector and the positive slurry per unit volume is increased; the anchoring force and the bonding force between the positive electrode material coating and the current collector are improved; and coating falling and falling caused by different ductility of two materials coated on the same side can be avoided, interface impedance between the coatings is avoided, the advantages of high specific capacity of the layered oxide and long cycle life and high safety of the polyanion material are fully played, the capacity and rate capability of the battery cell are improved, and the service life of the battery is prolonged.

The utility model relates to the field of underground coal mine fully mechanized coal mining face and crossheading mining and conveying, in particular to a belt self-moving tail with a modularized anchoring mechanism, which mainly comprises a head end frame, the anchoring mechanism, a base frame and a tail end frame. A group of anchoring mechanisms are respectively arranged on the left side and the right side of the head end and the tail end frame of the belt self-moving machine tail, a pin connection structure is adopted, the disassembly and assembly are more convenient, the problem that the belt self-moving machine tail is pulled back when a reversed loader moves forwards is solved, and meanwhile, an anchoring part of each anchoring mechanism adopts a universal structure and can rotate by 360 degrees so as to adapt to non-uniform stress caused by unevenness of a gate road top plate.

The invention discloses an ecological slope protection supporting structure for hydraulic engineering, and relates to the technical field of hydraulic engineering, the ecological slope protection supporting structure comprises a concrete plate arranged at the top of a slope surface, the top and the bottom of the concrete plate are provided with an insertion hole and a resistance plate mounting groove respectively, and an auxiliary resistance plate is movably inserted into the inner wall of the resistance plate mounting groove; a bearing insertion hole is formed in the top of the slope surface, an insertion cylinder is movably inserted into the inner wall of the bearing insertion hole, and a positioning cylinder movably connected to the top of the insertion cylinder in a sleeving mode is fixedly connected to the center of the bottom of the auxiliary resistance plate. By rotating the single center adjusting column, the conical arc plate at the bottom can be synchronously driven to form a pile head, the transverse moving conical rod in the middle can be synchronously driven to penetrate in the radial direction, the anchoring arc rod on the upper portion can be synchronously driven to expand in the circumferential direction, and multi-layer and three-dimensional anchoring from deep to shallow and from the radial direction to the circumferential direction is achieved. Due to the synergistic effect, the overall anchoring force, pulling resistance and shearing resistance of the structure are greatly enhanced, and instability and landslide of the slope protection structure are effectively prevented.

The utility model discloses an anti-pulling and anti-compression prestressed jet expansion frustum press-grouting pile. The press-grouting pile is composed of a pile body and a prestressed rod body combined component located in the pile body. The pile body comprises a pile cap and a pile body which are of an integrated structure, at least three rib plates are arranged on the peripheral face of the pile body, and at least one double-frustum expanding body is arranged below the pile body. The prestressed rod body combined component comprises a rod body tensioning end component, a rod body steel pull rod component and a rod body anchoring end component which are sequentially connected from top to bottom. The pile type can be used for an uplift pile and an uplift and compression resistant pile, and is high in bearing capacity, small in deformation and low in manufacturing cost; the prestress is applied at the top of the pile, so that cross construction of raft plates is avoided, and the construction period is shortened; a pile cap is arranged at the top of the pile to prevent local compression damage of pile end concrete during prestress tensioning; the pile end is of a bottom anchor type structure, and stress is reasonable; the steel pull rod in the double-frustum expanding body is sleeved with the external thread anchoring steel pipe and filled with the high-strength grouting material, corrosion resistance is good, and anchoring is stable and reliable.

The invention relates to an anchoring structure of a pedestrian cableway bridge bottom cable, and belongs to the field of bridge engineering. The anchoring structure of the pedestrian cableway bridge bottom cable comprises a bottom cable, anchor benches are arranged at the two ends of the bottom cable, two parallel threaded anchor rods are anchored on the side walls, facing the bottom cable, of the anchor benches, and a cross beam capable of being adjusted in the axis direction of the threaded anchor rods is erected between the two threaded anchor rods. The axis of the cross beam is perpendicular to the length direction of the bottom cable, and the end of the bottom cable is detachably connected with the cross beam. The anchoring device and the adjusting device of the bottom cable are integrated, the sag and the tension of the bottom cable can be adjusted by adjusting the height of the cross beam on the threaded anchor rod, and the device is simple in structure, high in reliability and convenient to use.

The present invention relates to a multifunctional drainage hole orifice device that is adaptive to irregular hole wall structures. The orifice device includes a main pipe, an end cover, a pressure ring and a pressure cover. The main pipe is provided with an end cover at one end and a pressure cover at the other end. A plurality of pressure rings are sleeved on the main pipe, and the plurality of pressure rings are arranged between the end cover and the pressure cover. Rubber rings and water-expandable water-stop rings are alternately arranged between adjacent pressure rings. The present invention solves a series of problems that the existing orifice device is not adapted to irregular hole wall structures, has a single purpose, is not adaptable, is inconvenient to install, has insufficient anchoring force, has a small flow area, and is inconvenient to repair. Compared with the existing drainage hole orifice device, the present invention is adapted to various irregular hole wall structures and has a good water-stopping effect. A plurality of water-expandable water-stop rings are used to replace elastic rubber rings. When there is water in the drainage hole, the water-expandable water-stop ring will further expand fully to actively fill the irregular gaps, ensure close contact with the irregular hole wall, and exert a good water-stopping effect.

The utility model discloses a high and large support stand column bottom anchoring foundation structure which comprises a concrete foundation and an embedded steel plate, a reinforcing mesh is embedded in the concrete foundation, the embedded steel plate is embedded at the top of the concrete foundation, the embedded steel plate is a square steel plate, four steel channels are vertically welded to the bottom of the embedded steel plate, and the steel channels are connected with the concrete foundation in a welded mode. The four steel channels are symmetrically arranged with the embedded steel plate as the center, the bottom ends of the four steel channels extend into the lower portion of the concrete foundation, the top of the embedded steel plate is flush with the top face of the concrete foundation, and multiple layers of steel bar barbs are arranged on the four steel channels respectively. The high and large support stand column bottom anchoring foundation structure can increase the anchoring force of the stand column and the foundation, and the whole structure is firmer.

The utility model relates to the technical field of hexsteel, in particular to a hexsteel high-temperature wear-resistant composite layer which comprises a framework and a wear-resistant coating, the framework is composed of a first hexsteel structure and a second hexsteel structure, the wear-resistant coating is made of fire-resistant paint, and the second hexsteel structure is located on the outer side of the first hexsteel structure. Fixing blocks are arranged at the ends, close to each other, of the first hexsteel and the second hexsteel, clamping grooves are formed in the ends, close to each other, of the two fixing blocks, reinforcing blocks are arranged at the ends, close to each other, of the first hexsteel and the second hexsteel, and connecting grooves are formed in the two ends of the first hexsteel and the two ends of the second hexsteel; the outer side of the first hexsteel and the outer side of the second hexsteel are each wrapped with a fireproof layer, the fireproof coating is located on the outer side of the fireproof layer, the fireproof layers, the fireproof coating, the first hexsteel and the second hexsteel form a composite layer, and compared with an existing hexsteel, the overall practicability of the hexsteel can be improved through the design.

This invention relates to the field of construction, specifically to a method for constructing a pressure-bearing composite chamber anchor bolt, comprising the following steps: S1, locating drilling points in the soil layer; S2, drilling holes in the soil layer; S3, placing the anchor bolt into the drilled hole; S4, grouting the chamber of the anchor bolt to expand it, and grouting into the drilled hole; S5, after grouting, applying prestress to the anchor bolt; S6, completing the construction. This invention can calculate the optimal prestress locking value applied to the anchor bolt under different working conditions during anchor bolt construction, thereby maximizing the strength and durability of the anchor bolt.

The invention relates to the technical field of anchor rods, and provides an anchor rod drawing test device and a pipe seam type anchor rod, the anchor rod is provided with an anchoring hole, the side wall of the anchoring hole is provided with a first gap, the inner wall of the anchoring hole is provided with an inverted conical protrusion, a reinforcing rod is arranged in the anchoring hole, the reinforcing rod is provided with an inner cavity, and the side wall of the inner cavity is provided with a second gap. The outer wall of the reinforcing rod is provided with a conical protrusion, and the conical protrusion abuts against the inverted conical protrusion. By means of the technical scheme, the problem that in the prior art, connection of a pipe seam type anchor rod is not firm is solved.

The present invention provides a mixed reinforced prefabricated pile and a production method thereof, comprising a concrete pile body and a pile end anchor plate; the concrete pile body is provided with prestressed steel bars, non-prestressed steel bars and spiral stirrups; the spiral stirrups are wound around the prestressed steel bars and non-prestressed steel bars to form a steel skeleton cage, and the concrete wraps the prestressed steel bars, non-prestressed steel bars and spiral stirrups; the pile end anchor plate is at least provided at one end of the concrete pile body, and the end of the prestressed steel bar is connected to the pile end anchor plate; at least one end of the non-prestressed steel bar is provided with a connecting piece; the non-prestressed steel bar is anchored to the concrete or connected to the pile end anchor plate through the connecting piece. The present invention reduces the deformation of the end of the pile under horizontal bearing capacity, improves the rigidity of the end, has the characteristics of simple structure, high pull-out resistance and horizontal bearing capacity, low cost, high construction efficiency, etc., and can effectively improve the displacement ductility of the pile body and the quality of the connection between piles.

The utility model relates to the field of handrails, in particular to an all-glass handrail which comprises a clamping mechanism. A fixing mechanism is arranged at the upper end of the clamping mechanism, a glass body is arranged at the upper end of the fixing mechanism, and a protection mechanism is arranged on the side wall of the glass body. The anti-pulling capability is remarkably improved through the clamping mechanism, the maintenance cost is reduced through the fixing mechanism, and the problems that in the prior art, a device is usually fixed through glass cement or a simple metal clamp, the connecting strength of glass and the ground or a stand column is limited, the edge is prone to cracking due to stress concentration or tiny vibration, and the service life is short are solved. The problems of complex process and high construction precision requirement, the overall structure needs to be dismantled during later maintenance or glass replacement, the cost is high, and a metal frame or a clamp shields sight lines, so that the transparency of the glass handrail and the overall attractiveness of a building are influenced are solved.