31results about How to "Guaranteed anchoring force" patented technology

The invention discloses a full-grouting sleeve for connection of construction reinforcing steel bars, and belongs to the technical field of building projects. A reinforcing steel bar axial-limiting guide stop dog is arranged on the inner wall in the middle of a sleeve main body; guide slopes are arranged between the stop dog and the inner wall of the sleeve main body; a positioning bolt is arranged on the sleeve main body at the prefabricated end; the reinforcing steel bar at the prefabricated end is axially and radially fixed through the positioning bolt; the sleeve main body is molded by one-step casting of spheroidal graphite cast iron, so that the production cost is low; the outer surface of the sleeve main body serves as a roughened surface, so as to ensure the anchoring force between the grouting sleeve and the concrete; a plurality of convex hooping ribs are arranged on the inner wall of the grouting sleeve; an identification gap is formed in the port face of the sleeve main body at the field poured end, so as to prevent the situation that the grouting sleeve is installed reversely; a seal ring is arranged inside the port of the sleeve main body at the prefabricated end. When the grouting sleeve disclosed by the invention is in axial butt joint with the reinforcing steel bar, the precise axial control can be automatically realized, and the radial positioning can be automatically realized, so as to ensure the positioning accuracy between the reinforcing steel bar and the grouting sleeve, and meet the requirements on building construction quality.

The invention discloses a construction method for an underground water road cutting for a road in an area along a river during crossing underneath existing railway. The method comprises steps as follows: a waterproof curtain is arranged by high-pressure rotary jet grouting piles in the original ground between the road and the river channel, and water in the river channel cannot perform convectivepenetration with the road cutting; a rotary drilling rig is adopted for drilling, and underwater concrete is poured; soil mass in front of the piles is reinforced by taking any one of composite foundation treatment measures of cement-mixed piles, multi-directional stirring cement mortar piles or CFG (cement flyash gravel) piles; excavation is performed and a hanging board is manufactured; drainageditches are excavated on two sides in the road cutting during excavation of the road cutting, water is collected to the low-lying section and underground water is drained to the outside of the road cutting by a water suction pump in a waterway drain manner; underground drainage systems such as longitudinal blind ditches and the like are constructed; a roadbed is subjected to replacement filling treatment and compaction. The construction method has beneficial effects as follows: the construction quality of the underground water road cutting in the area along the river is guaranteed, anchorageforce required by the design is provided by soil mass at anchorage sections of the double-row piles, stable roadbed slope and qualified road surface deflection are guaranteed, and the roadbed is prevented from being damaged by diseases.

The invention discloses a soil extrusion expansion anchor rod structure. The structure comprises an anchor rod main body; the anchor rod main body is of a cylindrical structure integrally molded; a sharp end is arranged at the right end of the anchor rod main body; a mounting cavity is formed in the anchor rod main body; a sealing cover is fixed in a left port of the mounting cavity through welding; a transmission block is arranged in the anchor rod main body of the sealing cover; the transmission block is connected with a power mechanism for conveying devices into an anchor hole during acting; multiple piston cavities and storage holes are formed in a wall of the mounting cavity; storage cavities communicate with the piston cavities; piston plates are slidingly arranged in the piston cavities; and anchoring rods are fixed at the upper ends of the piston plates. The structure is optimized aiming at the defects of a traditional device, is provided with the anchoring rods capable of realizing extension storage, can reduce the friction resistance when conveying the anchoring rods in the anchor hole, guarantees the anchoring force, and achieves high practicability.

The invention provides a coated stent graft for the abdominal aorta and a coated stent graft system for the abdominal aorta. The coated stent graft for the abdominal aorta comprises a stent main-bodyand a coating; the stent main-body comprises a plurality of sequentially connected stent loops; and the stent main-body is coated with the coating. From the near-end to the far-end, the branch-type coated stent graft sequentially comprises an upper main-body section, a windowed section and a lower main-body section; at least one first-branch window is arranged on the windowed section; each of thefirst-branch window comprises a stent frame; each of the stent frame is encircled by two adjacent complete stent rings; openings are arranged on the coating with which the stent frames are coated, thereby allowing communicating with branch vessels; and the coating sunks, within the range of the stent frames, toward the interior of the stent. The coated stent graft for the abdominal aorta and the coated stent graft system for the abdominal aorta provided by the invention can be used for interventional treatment of perirenal abdominal aortic aneurysm with short neck; moreover, the coated stent graft for the abdominal aorta and the coated stent graft system for the abdominal aorta show excellent anchorage stability.

The invention discloses a construction method of a sandy ground hole-forming anti-floating anchor of a steel pipe and PVC pipe compound bushing. The method comprises the following steps: (I) positioning and numbering anchor holes; (II) taking a conventional hole drill in position and drilling a steel sleeve; (III) blowing and cleaning holes at a high pressure and lifting a drill; (IV) putting a PVC bushing down and pulling out the steel bushing; (V) grouting; and (VI) putting the anti-floating anchor down. The process method solves the hole collapsing problem by drilling the steel bushing to form holes and blowing and cleaning the holes, so that the anti-floating anchor is smoothly hole-formed. According to the process method, a protective wall is formed by means of the PVC bushing, so that the hole collapsing problem in the grouting construction process is solved, and meanwhile, the anti-floating anchor plays a role of corrosion resistance. The process method is simple to operate andsimple to construct, and can form holes within a relatively short time and construct the anti-floating anchor. The process method can solve the problem of an anchoring force of the anti-floating anchor in a soil layer effectively; and holes are formed by means of a conventional hole drill through the process method, and the steel bushing is repeatedly used, so that the extra cost is prevented frombeing increased.

The invention provides a locking anchoring device and a transcatheter locking anchoring system. The locking anchoring device comprises an adjusting assembly, a releasing assembly and an anchor, wherein the adjusting assembly comprises a catheter and a stop seat arranged at the far end of the catheter in a protruding mode, the stop seat is provided with a thread inlet groove for a suture to pass through, the anchor is contained at the far end of the stop seat, the far end of the anchor extends out of the stop seat, and the releasing assembly penetrates through the catheter and the stop seat and is detachably connected with the anchor. In the heart intervention process, the anchor can be contracted into the catheter, and the conveying difficulty and the damage to human tissue are reduced; and the depth of the anchor penetrating into the myocardium is limited through the stop seat, and the damage to the tissue is reduced while the anchoring force is guaranteed.

The invention discloses a side slope anchor rod anchoring method based on stress compensation. The side slope anchor rod anchoring method comprises the following steps: measuring the physical and mechanical parameters of a side slope body; monitoring the three-dimensional stress state of each point in a slope body through an instrument, then determining the arrangement position of an anchor rod and the anchoring force compensation direction in combination with the limit stress state of a monitoring point determined by the Mohr-Coulomb criterion; and according to the stress state of the slope under the given safety coefficient and the stress state obtained through actual monitoring, calculating to obtain an anchoring force compensation value required by the anchor rod and an anchor rod parameter value. According to the scheme, the arrangement range and direction of the anchor rods can be accurately determined, the anchoring force can be determined according to the slope stress distribution state when it is guaranteed that the slope reaches the target safety coefficient, the anchor rod arrangement scheme is designed more economically, reasonably and safely through the method, and higher practical and popularization value is achieved.

The invention discloses a safety support anchor rod in coal mine well. A anchor sleeve comprises a first anchor rod sleeve section integrally arranged, a second anchor rod sleeve section and a third anchor rod sleeve section. A plurality of axial direction through grooves are formed in the first anchor rod sleeve section in axial direction of the first anchor rod sleeve section, and a plurality ofradial direction circumferential grooves are formed in the second anchor rod sleeve section in the radial direction of the second anchor rod sleeve section. The anchor rod comprises an anchor rod body integrally arranged, an anchor rod internal solid section and an anchor rod internal clamping section, the anchor rod internal solid section is used to be connected with the anchor rod internal clamping section on the inner end of the anchor rod body, and an extending strip groove is formed in the anchor rod internal solid section in the axial direction of the anchor rod internal solid section.Grooves of the first anchor rod sleeve section and the second anchor rod sleeve section can be filled with solidified slurry well, the stability of anchoring of the anchor rod sleeve is improved, andthe anchoring force in radial direction and lengthways direction of the anchor rod sleeve is ensured; at the same time, the anchor rod internal solid section and the anchor rod internal clamping section are arranged on the inner end of the anchor rod, and the stability of the anchor rod is further ensured to prevent the anchor rod from loosing after anchoring. The Safety support anchor rod in coalmine well is reliable in structure, and the safety of coal mine support can be efficiently enhanced.

The invention relates to an energy-absorbing and impact-resisting anchorage device assembly and a mounting method thereof. The energy-absorbing and impact-resisting anchorage device assembly comprises a base plate, an energy-absorbing and impact-resisting aligning pad, an energy-absorbing and impact-resisting anchor ring and a clamping piece. The steel strand is sleeved with the energy-absorbing impact-resistant anchor ring, and external threads are manufactured on the outer wall of the energy-absorbing impact-resistant anchor ring. The upper end part of the energy-absorbing and impact-resisting anchor ring is in threaded connection with the energy-absorbing and impact-resisting aligning pad, and an internal thread through hole matched with the external thread is formed in the energy-absorbing and impact-resisting aligning pad along the axial direction. The impact energy can be effectively absorbed, the impact resistance of an anchorage device assembly part under the impact load is improved, and the anchoring force of the anchor cable is kept.

The invention discloses a detachable type bit-expanded reinforced soil nail device and a use method thereof. The detachable type bit-expanded reinforced soil nail device comprises at least one bit-expanded reinforced soil nail, the bit-expanded reinforced soil nail comprises an expanded bit, a thread casing pipe and a screw, the expanded bit is fixed in the middle of the screw, the two ends of thescrew are provided with thread connecting segments, adjacent soil nails are connected through the thread casing pipe, the bit-expanded reinforced soil nails are lengthened, or multiple continuous bit-expanded reinforced soil nails are arranged; the device has the beneficial effects that the device is simple in structure, safe in use and convenient to mount. Through the structure, the anchorage force of the soil nails can be ensured, through the external expansion manner of anti-bend reinforced bodies, multiple expanded bits can be formed, the contact area of the soil nail expanded bit and the soil can be greatly increased, frictional resistance is increased, due to the effect of the expanded bit, soil layer counterforce is increased, and the soil nail anchorage strength can be achieved to the maximum limit.