36results about How to "Improve anchoring performance" patented technology

The invention relates to a flexible umbrella supporting anchor bolt and a method for supporting a soil slope thereby. An end ring and an end circular connector are fixedly disposed at one end of a round anchor bolt. A spring circular connector and a middle ring are fixedly disposed in the middle of the round anchor bolt. A lower circular connector adjacent to the right side of the middle ring movably sleeves the round anchor bolt. A drag umbrella surrounding the round anchor bolt comprises reacting plates evenly arranged, pull rods and compression springs. One end of a flexible pull rope is fixed to a round hole arranged in the other end of the round anchor bolt. More than one flexible umbrella supporting anchor bolt is connected with a soil high slope protective structure, composed of a geogrid mesh, a vegetation protective layer and a retaining wall, through the flexible pull ropes, and a whole for firmly and reliably anchoring and protecting the soil high slope is formed. The umbrella reacting plates are connected with the protective structural mesh through the flexible pull rope, anchoring force is greatly higher than that of a traditional anchor bolt, anchoring effect is more reliable, and engineering cost can be decreased by 50-60%.

The invention discloses a mechanical type multipoint extensometer, which comprises an orifice reading machine, an orifice reference plate, an indium wire, and an anchoring head for point measurement inside a pore. The orifice reference plate is fixed on the pore wall with an expansion bolt, a pilot pin at the bottom plate of the orifice reading machine is inserted into the locating hole in the orifice reference plate, the orifice reading machine is fixed in the orifice reference plate, one end of the indium wire is fixed on a fastening bolt of anchoring head for point measurement inside a pore, the other end of the indium wire is fixed passed through a center hole of the orifice reference plate and fixed on a conical clip with point measurement marks, and the conical clip with point measurement marks is connected with a conical hanger of the orifice reading machine. The invention has the advantages of simple structure, large measurement range, easy operation, rapid anchoring, and reliable performance; and is suitable for point measurement in a pore with different bore sizes.

The invention relates to a multi-layer telescopic multi-point displacement meter anchor head for water-rich soft stratum. A plurality of in-hole measuring point anchor head units are arranged in the longitudinal direction one after another. Each in-hole measuring point anchor head unit is designed to be a surface contact type and comprises a main anchor head and an anchor head protective cover, wherein each main anchor head is connected with the corresponding anchor head protective cover by a positioning hole. Each main anchor head comprises an indium steel wire, a fixed pulley device, an external force conversion device and an anchor claw execution mechanism; each indium steel wire and each fixed pulley device receive external force; a contraction action is realized by each anchor claw execution mechanism through the conversion and the drive of each external force conversion device; each external force conversion device comprises a tension spring device and a plurality of special springs; each anchor claw execution mechanism comprises a plurality of triangular blade-type anchor claws; and the number of the special springs is the same as that of the anchor claws. The multi-layer telescopic multi-point displacement meter anchor head has the advantages of good anchoring effect, wide measuring range, simple structure, convenience in construction, high anti-sliding capacity, reliable performance and the like.

The invention provides an integral squeezing steel strand anchorage stay rope and relates to a prestress stay rope and a manufacturing method thereof. The stay rope comprises a steel strand finished stay rope and an internal squeezing stay rope anchorage. The internal squeezing stay rope anchorage comprises a squeezing anchor cup, an adjusting nut and a sealing drum. A threaded hole, a taper hole and a straight hole are arranged in the squeezing anchor cup in sequence. A clamping piece is arranged in the taper hole. The conical degree of the outer surface of the clamping piece is identical with that of the inner surface of the taper hole. Steel strand holes are disposed in the clamping piece. Threads are arranged inside each steel strand hole. Sealant is filled between bare steel strands and the straight hole of the squeezing anchor cup and an inner hole of the sealing drum. The manufacturing method comprises the follow steps: (A) machining every part, component and the steel strand finished stay rope, (B) assembling, (C) threading the steel strands and installing the clamping piece, (D) squeezing, (E) installing an anti-loose screw plug, (F) sealing and filling the sealant. The integral squeezing steel strand anchorage stay rope and the manufacturing method thereof can reduce machining difficulty and production cost, and is reliable in anchoring performance and applicable for different specifications of the steel strands.

The invention discloses a parallel bar type anchor device for a flexible flaky material and a method thereof. The parallel bar type anchor device for the flexible flaky material comprises a parallel piece and at least two rod pieces, wherein two rod pieces are arranged on the parallel piece; two rod pieces are parallel mutually and a gap is reserved between two rod pieces; and the parallel piece or the rod pieces are provided with anchor holes or protrudent parts used for perforation for anchoring. The parallel bar type anchor method for the flexible flaky material comprises the following steps: the parallel bar type anchor device for the flexible flaky material is used to retrace the flexible flaky material after rounding the first rod piece, coincidence points are leaned against the second rod piece to form winding knots; and a coincidence sheet is continuously leaned against the second rod piece and finally is leaned against the first rod piece to form a ring packet with the winding knots. The device has simple structure, light mass, convenient operation, reliable effect and low cost.

The invention discloses a multilayer blade-typed multipoint displacement metre anchor head used for a soft soil layer, wherein the anchor head comprises a plurality of measuring point anchoring head units arranged in a drilling hole of a to-be-tested soil body; each measuring point anchoring head unit is orderly and vertical to each other and connected with each other through a casing pipe from head to tail; each measuring point anchoring head unit is fixed with one longitudinal measuring point of the drilling hole. Each measuring point anchoring head unit comprises a main anchoring head and an anchoring head protective cover, wherein each main anchoring head and each corresponding anchoring head protective cover are connected in thread. The multipoint displacement metre anchoring head in the invention can drive three blade-typed anchoring grasps synchronously with three springs; utilizes elastic energy released instantly to cut into the soft soil to finish anchoring; is not limited by field condition; and is convenient in installation, simple in structure, strong in reliability and stability, good in anchoring effect, strong in anti-skid ability and reliable in performance.

The invention belongs to the technical field of weak foundation reinforcement of geotechnical engineering, relates to an anti-floating anchor rod advanced reinforcement drilling and wall protecting method based on a microbial grouting technology, wherein an in-situ bacterial culture scheme is adopted, in-situ excitation is carried out by utilizing naturally occurring soil urease bacteria in soil,and the characteristic bacterial culture medium is utilized to grow urease in soil to avoid the potential microbial hazards caused by introduction of microbial strains into soil from the outside; an advanced grouting process is adopted, the microbial culture medium is injected into surrounding soil before drilling, after the microbial in-situ culture is completed, a microbial mineralization process is started to enable the surrounding soil body to occur curing reaction, and after curing is completed, the drilling, grouting and anchoring work of the anti-floating anchor rods are performed in sequence, and the isolation plate need not be placed into the borehole; the construction cost is reduced, and the construction efficiency is improved. According anti-floating anchor rod advanced reinforcement drilling and wall protecting method based on a microbial grouting technology, the process is simple, convenient to operate, low in cost, practicability and construction efficiency is high, andthe anchoring performance of the anti-floating anchor rod is improved, while which can protect the underground water layer and the environment.

The invention relates to a flexible freeze-thaw resistance treatment method for highway bridge expansion joints in a seasonal frozen soil region and belongs to a maintenance and treatment method for the traffic road bridge broken maurer joints. The method includes: chiseling off the broken concrete of the original anchorage zone, clearing the original concrete materials, pouring the high-performance wear-corrosion resistance concrete, filling the flexible filling materials in the boundary beam maurer expansion joints, wherein the initial setting time of the filleting materials is 3-5 hours, and the consolidation time is 25-30 days, and ending the treatment. The flexible freeze-thaw resistance treatment method for the highway bridge expansion joints in the seasonal frozen soil region can improve the anchorage performance of the maurer joints, resists the freeze and thaw, prevents the water seepage and earth leakage, solves the problem that the expansion joints of the road bridge often occur, achieves the joint sealing purpose by direct embedding of the flexible wear-corrosion resistance filler in the joints, is simple in treatment method, and not only can prevent the water seepage and earth leakage of the expansion joint, but also is free of freeze and thaw in winter.

The invention discloses a pipe core skid resistance anchoring device for a vertical wire wrapping machine for a prestressed concrete cylinder pipe. The anchoring device consists of an anchoring device base and an anchoring block; the anchoring device base is fixedly arranged on a base of a pipe core positioning wheel of a rotating platform of the wire wrapping machine; the anchoring block is embedded into the anchoring device base; a plurality of tooth sockets used for embedding a prestressed wire are evenly formed in the anchoring block. According to the anchoring device disclosed by the invention, relative slip generated between a pipe core and the rotating platform when wire wrapping is performed on the pipe core of the prestressed concrete cylinder pipe can be prevented, so that the stability of stress during wire wrapping is ensured, the quality of the prestressed concrete cylinder pipe is enhanced, and the engineering hidden danger is eliminated.

The invention discloses a combined foundation pit supporting structure and a construction method thereof, and belongs to the technical field of civil engineering. The foundation pit supporting structure comprises cement soil mixing piles arranged at the outer side of a foundation pit excavation face, rib bodies, reinforcing mesh and a concrete layer. The rib bodies are arranged between the foundation pit excavation face and the cement soil mixing piles, one ends of the rib bodies are anchored in the cement soil mixing piles, and the other ends of the rib bodies are anchored on the foundation pit excavation face; the reinforcing mesh is arranged on the foundation pit excavation face, and the ends, located on the foundation pit excavation face, of the rib bodies are connected with the reinforcing mesh through reinforcing ribs; and the concrete layer is positioned on the surface of the reinforcing mesh. The invention further discloses a construction method of the combined foundation pit supporting structure, the foundation pit supporting structure is water-isolated and waterproof, meanwhile, the strength characteristic of the cement mixing pile waterproof curtain can be brought into full play, and the anchoring effect on the foundation pit supporting structure is more reliable. More importantly, due to the good anchoring effect of the cement soil mixing piles, the length of a ribbody material can be greatly reduced, and the rib body material is limited from the excavation face of the foundation pit excavation face to the interior of the cement soil mixing piles.

The invention discloses an FRP steel strand composite bar anchorage device and an anchoring method. The anchorage device comprises a soft metal pipe, an opening device, an anchor cup and a grouting material, the anchor cup penetrates into an anchoring area of an FRP steel strand composite bar, the soft metal pipe is fixed to the front end of the anchoring area of the FRP steel strand composite bar, the rear end of the anchoring area is opened through an opening device, the tail end of the anchor cup is filled with the grouting material after being blocked, and anchoring is completed after high-temperature curing. The anchorage device is simple in structure, small in size, high in anchoring efficiency, convenient to construct, capable of effectively improving the anchoring performance of the grouting material and a composite rib material and reducing the anchoring length, clear in stress direction, convenient to use, low in cost and high in reliability.

The invention relates to an anchor clamping piece which comprises two clamping pieces. A circular conical surface is arranged between the small end surface and the large end surface of each clamping piece; a positioning groove is positioned in the middle of each clamping piece; and a tooth of each clamping piece is in an inverted tooth shape, and the tooth distance is 1.25mm. The invention has the advantage of simple structure, is convenient for use, can effectively prevent phenomena of fracture, sliding and breakage generated in the anchor clamping piece and has enough meshing force on a steel strand.

An anchor with oblique-section clamping plates is composed of twisted cable, sleeve tube with the diameter of 25-30 mm of external circumference or 20-25 mm for internal circumference, and clamping plates with internal arc surface having transverse spiral thread, external arc surface having transverse groove and two oblique sections on longitudinal sides. Said clamping plates are installed between sleeve tube and twisted cable for bearing the tension force of twist cable.

The invention provides a self-drilling expansion anchor bolt. The self-drilling expansion anchor bolt comprises a drill bit used for drilling, an anchor rod connected with the drill bit and an expansion sleeve arranged on the anchor rod in a sleeving mode, an expansion cone is arranged at the first end, adjacent to the drill bit, of the anchor rod, and a neck area is continuously arranged behind the expansion cone. The second end, away from the drill bit, of the neck area is provided with a threaded section, when the expansion cone is pulled into the expansion sleeve, the expansion cone expands the expansion sleeve in the radial direction, a transition part is arranged between the drill bit and the expansion cone of the anchor rod, and the maximum diameter of the transition part is smaller than the hole diameter of a drill hole formed by the drill bit. In the anchoring process, good friction fit is formed among the expansion sleeve, the hole wall and the transition part, so that the anchoring effect of the self-drilling anchor bolt is greatly improved.