13results about How to "Reduce supporting costs" patented technology

This utility model relates to the field of construction, specifically a steel plate connection structure for primary and secondary beams. The secondary steel-concrete composite beams are symmetrically arranged on both sides of the primary steel-concrete composite beam, forming a cross-shaped arrangement. The primary steel-concrete composite beam is horizontally fitted with upper and lower flange connecting plates, corresponding to the heights of the upper and lower pipe walls of the secondary steel-concrete composite beams, respectively. The two end faces of the upper and lower flange connecting plates support the upper and lower pipe walls of the secondary steel-concrete composite beams from bottom to top. This utility model significantly improves the construction efficiency of connecting primary and secondary beams and has a simple structure.

This invention relates to the field of foundation pit support design technology, and provides a foundation pit support design method and system based on digital twins. The method includes: establishing a digital twin related to the foundation pit and support; constructing a corresponding change curve from the foundation pit excavation data; substituting the curve into the digital twin to predict the mechanical parameters of the foundation pit sidewall at the unexcavated depth, thereby obtaining second soil layer change prediction data; judging the future support requirements changes at various points in the foundation pit based on the second soil layer change prediction data and real-time foundation pit support data, and adaptively reinforcing the foundation pit support using coordinates, thereby reducing foundation pit support costs and improving the efficiency of excavation-as-you-go support.

This utility model discloses a prefabricated ribbed floor slab hoisting and forming structure, belonging to the field of building formwork. The structure includes a building formwork, a support assembly, a steel truss, and a hoisting assembly. The support assembly uses a non-full-span scaffolding with a central gap; the building formwork has flanges with hoisting slots and connection holes on its sides, which can be quickly connected into an array using fasteners; the steel truss spans the gap area and is erected on the flanges of two adjacent rows of formwork; the hoisting assembly includes an upper support, double-ended bolts, washers, and nuts, passing through the merged hoisting holes from top to bottom to transfer the formwork load to the steel truss, which is ultimately supported by the scaffolding on both sides. This utility model reduces the span of the steel truss by using a "span-for-support" approach, thus lowering its selection specifications and costs; the hoisting assembly is detachable and adjustable, offering flexible use; both the formwork and hoisting are prefabricated, greatly improving construction efficiency and reducing overall costs.

The utility model provides a deep foundation pit slope protection device which relates to the technical field of building construction, is installed on a slope and comprises a plurality of anchoring parts and a protection plate, each anchoring part comprises a base plate, an anchor rod and a cross-shaped connecting frame, the anchor rod is arranged at the bottom of the base plate and used for penetrating into the slope, and the cross-shaped connecting frame is arranged on the base plate. The connecting frames are arranged at the top of the base plate, the four corners of each connecting frame are correspondingly connected with the four protective plates, the corners of each protective plate are provided with L-shaped connecting plates matched with the corners of the connecting frame, the connecting frames and the connecting plates are provided with corresponding fixing holes, and fixing bolts penetrate through the connecting frames and the connecting plates to connect the connecting frames and the connecting plates. According to the deep foundation pit slope protection device, the modularized anchoring parts, the protection plates and the reinforcing assemblies are adopted, the suitable number of modules can be assembled according to the depth and length of a slope during installation, meanwhile, the anchoring parts, the protection plates and the reinforcing assemblies are connected through simple bolts so that installation and disassembly are convenient, and the anchoring parts, the protection plates and the reinforcing assemblies can be repeatedly used after being disassembled; and the support cost of the side slope can be greatly reduced.

This invention belongs to the technical field of mine support materials and preparation processes, specifically involving a composite inorganic sprayed slurry made from gasified slag and a preparation process for low-resilience, high-strength mine support. The sprayed slurry is a pure inorganic component, composed of activated gasified slag, ordinary silicate cement, auxiliary cementitious admixtures, and functional additives in specific mass proportions. The activated gasified slag undergoes alkali activation or thermal activation treatment, without using saline wastewater. The preparation process includes gasified slag pretreatment and activation, dry powder premixing, slurry preparation, high-pressure spraying support, and natural curing. This invention achieves high-volume utilization of gasified slag, solving problems such as saline wastewater activation, the presence of organic components in the sprayed slurry, and insufficient resilience and strength in existing technologies. It is suitable for various types of mine roadway support.

The utility model provides a kind of multi-head adjustable support node and foundation pit multi-node support structure, solve the problem that the fixed angle foundation pit support node in prior art cannot adapt to special-shaped foundation pit, and then cause to increase construction difficulty, affect the problem of supporting effect;Wherein multi-head adjustable support node, comprising: fixed rod and more than one steering piece, steering piece includes first hinged component and second hinged component, one end of first hinged component is hinged with one end of second hinged component, and the other end of first hinged component is fixed with fixed part;More than one connecting rod, one end of connecting rod is fixed with the other end of second hinged component, fixed rod is fixed with a support rod, and is connected with other support rod by the other end of connecting rod, adjust steering piece, drive other support rod to rotate, to adapt to the supporting scene of multiple angles, increase support distance and operation space becomes larger, convenient for construction, and reduce support rod consumption, save supporting cost.

The application discloses a combined supporting device of anchor rod and section steel, which comprises a supporting section steel, a first arc-shaped plate, a second arc-shaped plate, a reinforcing anchor rod and a supporting anchor rod; the first arc-shaped plate is arranged directly above the second arc-shaped plate, the second arc-shaped plate is supported on the floor of a roadway through the supporting section steel, and a waist-shaped groove is formed on the second arc-shaped plate along the circumferential direction of the arc surface of the second arc-shaped plate; the upper end of the supporting anchor rod is fixed on the first arc-shaped plate, and the lower end of the supporting anchor rod slides in the waist-shaped groove along the circumference of the second arc-shaped plate; and the reinforcing anchor rod is arranged on the lower side of the first arc-shaped plate. The application further discloses a combined supporting system and a combined supporting method based on the combined supporting device of anchor rod and section steel. The combined supporting device of anchor rod and section steel has high shearing capacity and high bearing capacity, improves the roadway supporting strength, and improves the supporting capacity.

The invention belongs to the technical field of foundation pit engineering supporting, and particularly relates to a slant supporting pile supporting system convenient to mount and demount and a using method.The supporting system comprises a fender post, a top beam is arranged at the top end of the fender post, and the fender post is arranged in a foundation pit and close to the side wall of the foundation pit; the counter-force mechanism is arranged at the top of the side wall of the fender post and located on the side, close to the interior of the foundation pit, of the fender post; the hydraulic mechanism is detachably connected to the adjusting end of the counter-force mechanism; and the supporting mechanism is detachably connected to the telescopic end of the hydraulic mechanism, the supporting mechanism is obliquely arranged in the bottom of the foundation pit, and the supporting mechanism inclines towards the fender post. Rapid driving and installation of the inclined supporting pile system can be achieved without depending on a large machine, after the supporting system is installed, the axial force of the inclined supporting piles can be monitored in real time, and after foundation pit construction is completed, most components of the supporting system can be recycled and reused.

This invention discloses a numerical method for transparent characterization of stress fields in mining engineering, belonging to the field of numerical simulation. The method includes: constructing a standardized numerical computation environment and determining the target processing area; establishing a three-dimensional rock mass mesh model and performing mechanical equilibrium solutions, simultaneously acquiring stress component and elastic strain energy data to achieve stress-energy dual-dimensional characterization; based on preset target center coordinates, real-time analysis and direct storage of spatial distance and angle information of each mesh point; writing node coordinates, displacement, stress, energy, and element connection relationships into a unified ASCII universal format file to generate a cross-platform readable data file; and finally, data verification and output. This invention overcomes the limitations of traditional methods, such as single characterization dimension, reliance on third-party processing for spatial analysis, and difficulties in cross-platform data interaction, significantly improving the efficiency and accuracy of stability analysis in mining engineering.

The application belongs to the technical field of ship power systems, and particularly relates to a high-voltage alternating current charging range extender electric ship power system and a control method. The system comprises a lithium battery module, a direct current distribution module, an alternating current distribution module, a high-voltage alternating current charging module, a low-voltage shore power box, a propulsion module, a daily load and an EMS system. The application provides a high-voltage alternating current charging range extender electric ship power system and a control method, realizes multi-mode charging, reduces the cost of equipment and wharf construction, can adapt to high-voltage shore power and low-voltage shore power, has high system integration and efficient control.

The invention discloses a marine water-cooling integrated refrigeration house refrigeration device, which relates to the field of marine refrigeration equipment, and comprises a house outer shell, a house inner shell, brackets horizontally arranged at intervals, a refrigeration integrated assembly, a water-cooling heat dissipation integrated assembly and house inner and outer heat insulation plates, the supports are connected with the warehouse inner shell and the warehouse outer shell to form an integrated metal plate structure, the warehouse inner shell extends into the refrigeration storage in a suspended mode, only the warehouse outer shell is fixed to a ship body, the supports are internally provided with connecting channels, the refrigerant circulating pipelines are internally arranged in the channels, and input pipes and return pipes are arranged on the different supports. The warehouse inner heat preservation plates and the warehouse outer heat preservation plates are embedded between the supports and can block installation openings. And an air return distance is reserved between the air return device and the axial flow fan. A finned evaporator, a defrosting heating pipe and a water pan are arranged in the in-warehouse shell, and the unit is matched with an automatic defrosting and cooling water flow protection mechanism. The unit is compact in structure, convenient to install and maintain, excellent in swing resistance and salt spray corrosion resistance, adaptive to ship operation working conditions, high in refrigeration and heat dissipation efficiency and high in operation stability.

This utility model discloses a friction-type constant resistance anchor bolt with a recyclable constant resistance device, including an anchor bolt body with a constant resistance device body sleeved on its outer side. The constant resistance device body has a raised inner wall and a smooth inner wall from top to bottom. A small tray and a flat tray are both set on the outer side of the constant resistance device body, with the flat tray located above the small tray. A friction sleeve is sleeved on the outer side of the anchor bolt body and located below the constant resistance device body. A fastening unit is screwed to the outer side of the anchor bolt body and located below the friction sleeve. The fastening unit has a fastening unit baffle. Under the action of the anchor bolt drilling machine, the fastening unit moves along the top of the anchor bolt body and pushes the friction sleeve to move into the constant resistance device body to cooperate with the raised inner wall and the smooth inner wall. The pre-tightening force can be applied simply by driving the fastening unit through the anchor bolt drilling machine. Furthermore, since the constant resistance device body is sleeved between the anchor bolt body and the anchor bolt body, it can play a supporting role while making full use of the constant resistance device body, which is in line with the concept of sustainable development.