13results about How to "Improve anchor strength" patented technology

This invention discloses a gravity-type bridge abutment anti-settlement and cracking reinforcement device and its processing method, belonging to the field of bridge construction technology. The device includes a bridge abutment body and a bridge deck erected on the bridge abutment body. The bridge abutment body includes a base platform and several sub-platforms sequentially spliced ​​on the base platform along the vertical direction. A guide rod seat is provided on the vertical panel. A rack is connected to a guide rod through a connecting rod. The guide rod slides vertically through the guide rod seat and connects to a support, which is fixed on the base platform. After the base platform settles, the base platform can drive the rack to move vertically downward through the guide rod. After the rack moves, it drives the gear to rotate, thereby driving the inclined panel to rotate towards the side away from the bridge abutment body. A pre-tension force is applied to the bridge abutment body through anchor rods. In addition to reinforcing the bridge abutment by pouring concrete ring beams, this invention also excavates auxiliary pits in the ground, drills holes to install prestressed tie anchor cables, and simultaneously injects grout at the bottom of the bridge abutment to reinforce the bridge abutment, prevent cracking, and reduce bridge abutment settlement.

The invention discloses a static pressure pile splicing device which comprises a plug piece, an adapter barrel, a socket piece and a prestressed steel bar. The adapter barrel, the socket piece and the prestressed steel bar are embedded in a static pressure pile and located at the axis position. The socket piece comprises an outer barrel and an inner barrel, the opening of the outer barrel faces upwards, limiting plates are distributed on the outer barrel, and meshing teeth are distributed on the inner barrel; the upper and lower ends of the prestressed steel bar are respectively connected with the inner cylinder and the adapter cylinder in a tensioning manner; the upper end of the prestressed steel bar is provided with a thorn head; the plug piece comprises an insertion cylinder with a downward opening and a bag body containing quick-drying glue, clamping plates are distributed on the outer wall of the middle of the insertion cylinder, and the lower portion of the insertion cylinder is sectioned through interval seams and provided with meshing teeth; after splicing, the adjacent static pressure piles abut against each other, the upper portion of the inserting cylinder is in threaded connection with the adapter cylinder, the lower portion of the inserting cylinder is inserted into the outer cylinder and expanded along the inner cylinder to enable the meshing teeth of the inserting cylinder and the outer cylinder to be meshed with each other, the clamping plate is lapped on the inner side of the limiting plate, and the puncture head punctures the bag body to enable the space and the gap to be filled with the quick-drying glue. According to the device, the butt joint perpendicularity can be guaranteed, and the tensile and shear-resistant capacity is improved.

The utility model discloses an anti-floating anchor rod connecting structure under the high-water-level geology. The cloth strip layer wraps the peripheries of the extending end of the anti-floating anchor rod and the fixed end of the anti-floating anchor rod, the water swelling strip is connected to the joint of the extending end of the anti-floating anchor rod and the fixed end of the anti-floating anchor rod, and the cement mortar layer is arranged in a cushion layer and located at the top of the fixed end of the anti-floating anchor rod. The lower waterproof coating layer and the upper waterproof coating layer are arranged at the bottom and the top of the cement mortar layer respectively, and the waterproof roll layer is arranged at the top of the upper waterproof coating layer. Due to the arrangement of the cloth strip layer, it is guaranteed that steel bars in the extending end of the anti-floating anchor rod and the fixed end of the anti-floating anchor rod are not prone to corrosion; the water swelling strip, the lower waterproof coating layer, the upper waterproof coating layer and the waterproof roll layer are arranged in a combined manner, so that all-directional water prevention is facilitated; and through the arrangement of the cushion layer and the cement mortar layer, the anchoring strength of the anti-floating anchor rod is improved, and the anti-floating stress strength is further improved.

The invention discloses a self-drilling anchor rod capable of achieving double-rotation-direction drilling and a manufacturing process thereof.The self-drilling anchor rod comprises an anchor rod body, and double-rotation-direction threaded sections are arranged at the two ends of the anchor rod body correspondingly; the right-handed threads rotate clockwise along the whole periphery of the two ends of the anchor rod body, the left-handed threads rotate anticlockwise along the whole periphery of the two ends of the anchor rod body, and the right-handed threads and the left-handed threads are machined independently, so that the right-handed threads and the left-handed threads are mutually crossed and overlapped. According to the self-drilling anchor rod, the large-diameter anchor rod and the small-diameter anchor rod can meet the adaptation of anchoring drilling machines with different thread rotating directions without distinguishing left-hand threads and right-hand threads, the universality of the self-drilling anchor rod is achieved, stock management of factories is facilitated, the delivery date of products is shortened, in addition, the self-drilling anchor rod meets the fastening performance of assembly connection, and the service life of the self-drilling anchor rod is prolonged. The stress can be uniformly dispersed and well transmitted, and the anchoring strength can be effectively improved.

The invention relates to the technical field of roadbed supporting, and particularly discloses an anchor bar pile rooting retaining wall-anchor cable combined supporting structure and a construction method thereof.The combined supporting structure comprises a retaining wall, anchor bar piles are arranged below the retaining wall, a top beam is arranged at the tops of the anchor bar piles, and the retaining wall is fixedly arranged at the top end of the top beam; the retaining wall is provided with a reserved hole used for installing an anchor cable, a connecting sleeve is embedded in the side wall of the reserved hole, and the anchor cable is fixed to the connecting sleeve. A grouting pipe is arranged in the anchor cable, an anchoring head is fixedly arranged at the end, away from the retaining wall, of the anchor cable, and the grouting pipe communicates with the anchoring head. A grout outlet is formed in the anchoring head, and a clamping mechanism is arranged at the grout outlet. The non-excavation type construction method is adopted, disturbance to a natural abrupt slope soil body is reduced, the original natural environment and slope stability are protected, complex pile foundation construction mechanical requirements are avoided, the construction process is simplified, and the construction difficulty and the engineering cost in complex terrains are reduced.

The invention discloses a multi-connected-hole fiber cut monofilament and a preparation method and application thereof, and belongs to the technical field of porous fibers.The method comprises the steps that polymer material slices are heated to be in a molten state to be spun into fibers, and the fibers are continuously treated and sequentially stretched for four times; and cutting the fibers stretched for the fourth time into short fibers to obtain the multi-connected-hole fiber cut monofilaments. Through physical structure design and a multi-stage stretching scheme, the prepared monofilament has high strength, high toughness, high bonding anchoring force and long-term durability. And the anti-cracking, toughening and anti-impact properties of concrete and mortar can be obviously improved.

This utility model relates to an embedded steel-clad wood-concrete composite beam, belonging to the field of composite beam technology. It includes a concrete slab with a trapezoidal groove extending along its length at the bottom. A wooden beam is positioned below the concrete slab, and the wooden beam has trapezoidal protrusions that mate with the groove, inserted into the groove. Several shear pins are arranged along the length of the wooden beam, fixing it to the upper part. An outer steel beam with a rectangular cavity is positioned below the concrete slab, and the wooden beam is embedded within this cavity. Two sets of barbed bolts are provided on the concrete slab, located on opposite sides of the trapezoidal groove. This utility model utilizes the compressive strength of steel and the tensile strength of wood in synergy, achieving efficient connection through mortise and tenon joints, pins, and bolts, enhancing overall load-bearing capacity and stability. It is suitable for large spans and negative bending moment areas, possessing excellent assembly adaptability and durability.

The invention relates to an embedded part fixing device and a concrete structure. The embedded part fixing device comprises an embedded part and a connecting part, the embedded part is partially embedded in a concrete body; the connecting piece is used for connecting the embedded piece and the embedded piece; wherein the embedded part comprises an extending part and a buried part, the extending part partially extends out of the surface of the concrete body, the buried part is connected to the buried end of the extending part at a certain inclination angle, and the connecting part is arranged on the extending part. The embedded parts are connected together through the connecting parts, local deformation caused by heat generated when the embedded parts are welded in the prior art is avoided, the stress distribution condition is improved, and the stress uniformity of the embedded parts is improved. And moreover, the embedded part is fixed in the mode that the embedded part is directly inserted into the concrete, the structure is simple, construction is convenient, and when the large-area embedded part is fixed, the construction efficiency can be greatly improved. In addition, the structural shape of the embedded part is changeable, and different external loads can be resisted through all the components.

The utility model discloses a side slope protection structure which comprises a ground anchor anchored under the ground. The blocking and protecting assembly is vertically arranged on the ground and is fixedly connected with the ground anchor through a steel wire rope; the blocking and protecting assembly comprises a connecting frame body, the connecting frame body comprises a frame body, a first connecting part is arranged at the end, away from the side of the slope, of the frame body, a second connecting part is correspondingly arranged at the other end of the side of the frame body, and the first connecting part can be inserted into the second connecting part; the baffle is fixedly installed on the side, provided with the first connecting part and the second connecting part, of the connecting frame body. Fluid such as gravel, slurry and mortar or objects with small sizes are blocked through the baffles, danger is avoided, the first connecting parts are inserted into the first connecting parts and then fixed through the bolts, rapid splicing of the protection structure is achieved, installation is easy and convenient, compared with a protection net, the structure is easier to machine, and the structure is more convenient to use. And the cost is low.

This application provides a protective device for steep slopes at tunnel entrances, comprising a protective net, multiple sets of anchoring mechanisms for fixing the protective net to the slope, and reinforcing plates connecting every two adjacent anchoring mechanisms. Each set of anchoring mechanisms is located at each corner of the protective net. The anchoring mechanism includes pre-embedded anchor seats embedded in the slope soil and anchor rods fixed to the pre-embedded anchor seats. The anchor rods and pre-embedded anchor seats together clamp and fix the protective net, and the anchor rods pass through the pre-embedded anchor seats and are anchored inside the slope soil. Reinforcing plates are connected between adjacent pre-embedded anchor seats, and the sides of the reinforcing plates are provided with positioning nails that pass through the protective net and are anchored inside the slope soil. Therefore, the reinforcing plates, pre-embedded anchor seats, and anchor rods together form an overall anchoring system for the protective net. When a local location becomes loose, the impact on the overall anchoring system is relatively small, which helps maintain the protective net's good protective capability.

This utility model relates to the field of bridge technology, specifically to a layered multi-directional bracket-type bridge support steel column, comprising a column body, a first load-bearing structure, a second load-bearing structure, a base plate, and a frame plate. The first load-bearing structure includes two first brackets symmetrically fixed to the left and right sides of the top of the column body and a second bracket fixed to the front side of the top of the column body. The second load-bearing structure includes a third bracket fixed to the right side of the upper middle part of the column body, a fourth bracket fixed to the front side of the upper middle part of the column body, and a fifth bracket fixed to the rear side of the upper middle part of the column body. The column body has a box-shaped cross-section. This utility model's layered multi-directional bracket-type bridge support steel column, through the layered arrangement of the first and second load-bearing structures and the six multi-directional brackets forming a three-dimensional support network, achieves distributed bearing of bridge loads and multi-dimensional stress transmission, effectively avoiding stress concentration, and giving the column structure high load-bearing capacity, seismic stability, and spatial adaptability.