5results 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 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.

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.