37results about How to "Improve overturning stability" patented technology

The invention belongs to the technical field of foundation structures of marine engineering, and discloses a combined marine six-pontoon floating box foundation structure and a construction method thereof. The combined marine six-pontoon floating box foundation structure comprises six pontoons, wherein the six pontoons are arranged in the way that the six pontoons are connected in sequence in thehorizontal plane according to the center points of the six pontoons to define a regular hexagon. A floating box is connected between the every two adjacent pontoons. Each floating box penetrates through the axes of the corresponding pontoons at the two ends of each floating box along the center line of the length direction. The pontoons and the upper parts of the floating boxes are connected witha transition section tower frame. The transition section tower frame is used for being connected with upper wind power equipment. The construction method of the combined marine six-pontoon floating box foundation structure comprises the steps of structure prefabricating, initial adjustment preparation, water consignment, foundation water entry, negative pressure penetration, grouting ballasting, supper structure mounting and recycling and utilizing. The combined marine six-pontoon floating box foundation structure has the characteristics of having a gravity foundation and a suction-barrel-typefoundation, the bearing capacity is improved while the transporting and mounting method is simple and convenient, recycling and reusing can be achieved, and the construction cost is greatly reduced.

The invention discloses a railway side dump car, which is characterized in that the upper cross section of each side door of the side dump car is small, the lower cross section of each side door of the side dump car is large, and the upper cross section is determined by calculation according to the minimum impact load of goods on the side doors. The camber angle of each side door is increased by 8-10 degrees. The height of each side door is increased, and the maximum relative distance between the tops of the two side doors is within the outer width of the lower part of a carriage. According to the railway side dump car disclosed by the invention, through the improvement on the structure of the carriage, the limit is fully utilized, and the lateral dimension of the carriage is increased; and on the premise of meeting the antidumping safety requirement of dumping operation, the internal height of the carriage is increased. The capacity of the carriage is increased through the combination of the modes, the full load need in transporting main trend granular goods is met, and the economic benefit of transportation is improved.

The invention belongs to the technical field of foundation structures of oceanographic engineering, and discloses an offshore six buoy and six buoyancy tank combined type foundation structure and a construction method thereof. The foundation structure comprises six buoys arranged in a mode that the center points of the buoys are connected in sequence to define a regular hexagon shape on a horizontal plane, a buoyancy tank is connected between every two adjacent buoys, and the center line in the length direction of each buoyancy tank penetrates through the axes of the buoys on the two ends of the buoyancy tank; and a transition section tower is connected to the upper portions of the buoys and the upper portions of the buoyancy tanks, and the transition section tower is used for being connected with upper wind power equipment; and the construction method comprises the steps of structure prefabrication, primary adjustment preparation, overwater towage, water entrance of a foundation, negative pressure penetration, grouting and ballasting, upper structure installation and recycling. The foundation structure has the characteristics of a gravity type foundation and a suction barrel typefoundation, the bearing capacity is improved, and meanwhile, the transportation and installation modes are simple and convenient, the foundation structure can be recycled, and the construction cost isgreatly reduced.

The invention relates to the technical field of bridge construction, in particular to an open-cut rock anchoring combined foundation and an inverse work construction method thereof. A convex rock exposed out of a river bottom is removed, and a foundation pit is dug; the foundation pit is bound with a steel bar net, a positioning sleeve is pre-buried in the steel bar net, and an open-cut cushion cap is cast on the bound steel bar net; on the open-cut cushion cap, holes are drilled to a bedrock at the bottom of the open-cut cushion cap through the positioning sleeve, and construction of anchoring holes is completed; anchor rods are inserted into all the anchoring holes along the positioning sleeve, anchor rod mortar is injected in the anchoring hole, and anchoring of the anchor rods is achieved; pier stud stressed main bars are welded to the anchoring rods of the corresponding positions of the open-cut cushion cap, a stud body steel bar cage is bounded, and pier body concrete construction is conducted; after the pier body construction is completed, the foundation pit is refilled with concrete till the ground line is reached, and construction is completed. The positioning sleeve is arranged in the open-cut cushion cap, after positioning is conducted through the positioning sleeve, the anchoring holes are drilled, the inverse work construction method of the open-cut rock anchoring combined foundation is easier compared with a method in which drilling and pilling are directly conducted on the bedrock, and the phenomenon like hole broadening is not prone to occurring.

The invention relates to the field of transmission line tower foundations, and provides a mountainous area small-load sleeve type foundation structure in order to overcome the defects of an existing transmission line tower foundation on the aspects of mountainous area transportation and economy. The mountainous area small-load sleeve type foundation structure comprises a sleeve pillar body pre-embedded under the ground and a lower expanded base forming an integrated structure with the sleeve pillar body. The lower expanded base is located at the lower end of the sleeve pillar body, the orthographic projection surface of the whole lower expanded base is of a round structure, and the diameter of the upper end of the lower expanded base is smaller than that of the lower end of the lower expanded base. The sleeve pillar body is internally provided with a hole groove where a power pole can be inserted. The design of an inclined anchor rod can improve the anti-overturning stability of the power pole foundation, and the base is designed in the form that the diameter of the upper end of the base is smaller than that of the lower end of the base, so that the base improves the anti-overturning stability of the power pole foundation and effectively improves anti-pulling capacity, and the base is suitable for the mountainous area small-load sleeve type foundation structure.

The invention relates to an inclined post pile foundation for an overhead transmission line. The inclined post pile foundation comprises inserted angle steel, anchoring angle steel, a concrete pile and a foundation step pile, wherein the inserted angle steel and the anchoring angle steel are fixedly arranged on the upper part and the lower part of the concrete pile respectively; an included angle of 10-20 degree is formed between the concrete pile and a vertical direction; and the foundation step pile is arranged at the bottom of the concrete pile, and is connected with the concrete pile by pouring. Compared with the prior art, the obliqueness is consistent with the gradient of an overhead transmission line bracket, so that the stress states of a foundation upright post and a bottom plate are improved greatly, the influence of foundation horizontal force on a foundation bottom plate is reduced to the maximum extent, and the stability of the foundation is enhanced remarkably; and meanwhile, the eccentric bending moment is reduced, so that the size of the controlled foundation bottom plate can be reduced correspondingly, the concrete amount and reinforcement amount of the foundation are reduced, the foundation is stressed reasonably, the anti-dumping stability is enhanced greatly, and the using amount of a foundation material can be saved by about 20 percent.

The invention belongs to the field of steel structure construction, and particularly relates to a bottom section adding hydraulic jacking system and a construction method. The bottom jointing hydraulic jacking system is composed of a jacking reaction frame, an anti-overturning stabilizing frame, a jacking frame standard section, and a top platform. As the jacking elevation increases during jacking, the anti-overturning stability of the entire jacking system decreases. By arranging the anti-overturning stabilizing frame, the jacking system always maintains translational freedom degree releasingin the vertical direction and translational and rotational freedom degree constraints in other directions during jacking, anti-overturning stability of the entire jacking system is improved, a jacking transverse beam is connected with the standard section of the jacking frame through pin connection, and the jacking construction efficiency is improved.

The invention relates to a combined type large-capacity typhoon-resistant silo and a manufacturing method thereof.The silo is mainly used for storing fine particles or powdery substances such as bulk cement, coal ash and mine powder and providing the materials for a blending machine.The silo comprises a concrete foundation, a base and a silo body; the base is arranged on the concrete foundation and is a rack composed of single rod pieces; the silo body is fixed to the base and comprises a silo bottom, a cylinder body and a silo top, and the cylinder body is formed by splicing arc-shaped steel plates; auxiliary facilities are further mounted on the silo body.By means of the combined type large-capacity typhoon-resistant silo and the manufacturing method thereof, integral windproof arrangement of the silo can be enhanced, the silo can be mounted and transported conveniently, the capacity of the silo can be increased, and components can be maintained and replaced conveniently.

The invention belongs to the technical field of foundation structures of marine engineering and discloses a combined offshore four-buoy four-buoyancy-tank foundation structure and a construction method thereof. The foundation structure comprises four buoys which are arranged by sequentially being connected into a square on the horizontal plane according to the center points; a buoyancy tank is connected between every two adjacent buoys, and each buoyancy tank penetrates through the axes of the buoys at the two ends of the buoyancy tank along the center lines in the length direction; and a transitional section tower is connected to the upper portions of the buoys and the buoyancy tanks and used for being connected with upper wind power equipment. The construction method of the combined offshore four-buoy four-buoyancy-tank foundation structure comprises the steps of structure prefabricating, initial setting preparation, water consignment, entry-to-water of the foundation, negative pressure penetration, grouting ballasting, installation of an upper structure, and recycling. The combined offshore four-buoy four-buoyancy-tank foundation structure integrates the characteristics of a gravity type foundation and a suction barrel type foundation, the transportation and installation modes are simple while the bearing capacity is improved, recycling and reuse are achieved, and the construction cost is greatly reduced.

The invention provides a single-leaf hyperboloid celebration flower basket frame, which utilizes the straight-grain characteristics of the single-leaf hyperboloid to construct a space intersecting slanting bar net tube, fix the intersection nodes of the space bars, and set multiple reinforcing ring beams to form a single leaf Hyperboloid Celebration Flower Basket Frame. Set up multiple partitions to divide the internal space of the single-leaf hyperboloid flower basket, set an oval concrete counterweight partition at the bottom to increase the stability against overturning, set a wooden partition on the upper part to place the upper flower pots, and arrange the lower layer around the body of the flower basket For flower arrangement, a plastic partition is set in the middle to place a goldfish tank, and the space between the goldfish tank partition in the middle and the concrete partition at the bottom doubles as a bird cage. The new celebration flower basket frame has the advantages of stable and firm structural skeleton, beautiful shape with small waist, diversified flower basket functions, convenient production and low cost.

The invention discloses a foundation pit supporting method for a ground tube pile anchor frame. According to the method, concrete tube piles and pre-stressed anchor cables are used as the foundation. The method mainly refers to a foundation pit supporting method in which the adjacent building foundation embedded depth is high, the distance away from a foundation pit is short, the foundation pit side wall deformation requirement is high, and conventional anchor cable and steel shotcrete supporting cannot be achieved. By the adoption of the method, two rows of concrete tube piles are arranged around the foundation pit to be excavated, and the pre-stressed anchor cables which forms an angle alpha downwards are arranged between the front row piles and the rear row piles of the top of the foundation pit. Collision of the anchor cables with adjacent existing buildings (structures) is avoided under the condition of guaranteeing rigidity of the tube pile structure. The concrete tube piles are used for replacing reinforced concrete piles, and thus cost can be effectively reduced. The method is used for foundation pit supporting, foundation pit side wall deformation can be reduced, and the stability against overturning of the foundation pit can be enhanced. The security coefficient of the buildings (structures) around in the foundation pit construction process is increased, and meanwhile the purposes of shortening the construction period and reducing the cost are achieved.

A dual-drive heavy type transport cart comprises a driving cart and a driven cart. The driving cart and the driven cart each comprise a foot-operated electronic accelerator, an ECU rotary speed controller, an engine rotary speed controller, an engine, a clutch oil cylinder arranged on the engine, a servo accelerator executor, a clutch potentiometer, a clutch hydraulic pot, a clutch electric pump,a rotary speed communication interface and a clutch potential signal interface. The defects in the prior art are overcome, and the transport cart is reliable in working performance, is provided with complete safety facilities, is reasonable in whole structure, stable in operation, comfortable to operate, low in manufacturing cost, attractive in appearance, good in anti-overturning stability and high in production efficiency; the transport cart has the large load capacity and is of a self-propelled type, transportation is not limited by distance, operation is easy and convenient, and an operation driver can be qualified only through simple training.

The invention discloses a large-span space cable net system suspension bridge, and belongs to the field of civil engineering. The large-span space cable net system suspension bridge mainly comprises arch-shaped bridge towers, main cables, suspension rods, parallel cables, space cable nets, back cables, arch-shaped ring beams, stiffening steel beams, anchorages, bearing platforms, pile foundationsand other structures. A Bessel curve is applied to optimize a traditional portal bridge tower, so that the line shape of the portal bridge tower is smoother, and the anchoring requirement for arranging space cables can be met more easily; the space cable net is arranged in a hyperbolic paraboloid form, so that the space rigidity and the flutter critical wind speed of the cable system are effectively improved; and meanwhile, the excellent mechanical property of the uniparted hyperboloids is applied to improve the appearance of a traditional pile foundation pile body, and the anti-overturning performance is obviously improved under the condition that the anti-bending and anti-shearing bearing capacity of the pile foundation pile body is guaranteed. The large-span space cable net system suspension bridge provided by the invention can greatly improve the wind-resistant stability of the suspension bridge, and can be used as a reference for constructing the large-span space cable net systemsuspension bridge.

The invention relates to a high-pressure cleaning device (10), comprising: - a housing (12), on which two running wheels (26, 28) are mounted for rotation about a common axis of rotation (30) and in which a motor (16) and a pump (18) driven by the motor (16) are arranged; - a pressure hose (122) fluidically connected to an outlet (22) of the pump (18); and - a winding apparatus (40) which has a rotatably mounted hose drum (50) for winding and unwinding the pressure hose (122), wherein the high-pressure cleaning device (10) can be tilted about the axis of rotation (30) of the running wheels (26, 28) from a usage position into a transport position. According to the invention, in order to develop the high-pressure cleaning device (10) in such a way that the pressure hose (122) can be wound ina simpler way, the winding apparatus (40) has a restoring spring (70) and a blocking mechanism (51), wherein the restoring spring (70) can be loaded by unwinding of the pressure hose (122) from the hose drum (50) and the hose drum (50) can be set into rotation by the restoring spring (70) in order to automatically wind the pressure hose (122), and wherein the hose drum (50) can be automatically locked by means of the blocking mechanism (51) and released by the application of a tensile force to the pressure hose (122).