32results about How to "Reduce the number of supports" patented technology

The invention discloses a realization method of a seamless rail for straddle-type monorail transportation, relates to a rail beam in a straddle-type monorail transportation system and aims at enhancing the smoothness of the rail, reducing the number of straddle-type rail beam telescopic seams and support seats, reducing the abrasion on rubber tires and the engineering manufacture cost and prolonging the service life of vehicles. The seamless rail for the straddle-type monorail transportation is formed in a concatenated continuous beam bridge, concatenated continuous steel bridge or simple support beam bridge mode, or the seamless rail for the straddle-type monorail transportation is formed in a mode of mixing the three modes or any two modes. The continuous beam bridge or the continuous steel bridge is formed by connecting factory prefabricated concrete rail beams onto bridge pier cover beam top surfaces through wet joints by a method of converting simply-supported beams into continuous beams, simply-supported beam bridges are also prefabricated in factories, the adjacent continuous beam bridges, continuous steel bridges and simply-supported beam bridges adopt seamless telescopic seams, seam connecting plates or plate type rubber telescopic seams for connection, and the seamless effect of the straddle-type monorail transportation is realized.

The invention discloses an assembly type prefabricated truss balcony and an installation method therefor. The assembly type prefabricated truss balcony comprises a balcony slab, two first embedded parts, two second embedded parts, two first connecting pieces and two second connecting pieces, wherein the balcony slab is fixedly mounted between the two first connecting pieces; one end of any first embedded part and one end of any second embedded part are both embedded in a main body structure; and one end of the corresponding first connecting piece is fixedly connected with the second embedded part, and the other end of the corresponding first connecting piece is fixedly connected with the first embedded part through the corresponding second connecting piece. The prefabricated truss balcony disclosed by the invention is convenient and quick to mount; no form erecting and concrete pouring are required on site; the number of temporary supports is greatly reduced; and the purpose of improving the installation efficiency and construction quality is achieved.

The invention discloses a horizontal-type supporting method for a foundation pit of an arch shell and relates to the field of foundation pit supporting. The method comprises the steps that a continuous wall column pile with an orthographic projection curve is constructed at the top of the side wall of the foundation pit, the curve is composed of arcs of multiple circle centers at the same side, and the adjacent ends of every two adjacent arcs are connected; after a corresponding pile top beam is constructed at the top of the wall column pile, multiple digging layers are dug, a corresponding arch rack beam or a corresponding protection panel is constructed on each digging layer, integral buttresses are constructed at the two corresponding ends of each arc, the two adjacent ends of every twoarcs share one integral buttress, a supporting assembly corresponding to each integral buttress is constructed again and effectively supported, and an advanced vertical anchor pipe and an advanced horizontal anchor pipe are constructed on each digging layer. According to the horizontal-type supporting method, the defects of dense supporting of a traditional row pile wall are overcome, the span among the supporting assemblies is increased, and the digging difficulty is lowered.

The invention discloses a prestressed steel sheet pile supporting structure and a construction method thereof. The prestressed steel sheet pile supporting structure comprises a plurality of prestressed supporting units, wherein each prestressed supporting unit comprises a supporting pile, a plurality of steel supports and a prestressed tendon; each supporting pile is vertically arranged on one side of a to-be-excavated foundation pit; a plurality of the steel supports are arranged on the corresponding supporting pile from top to bottom; one end of each prestressed tendon is anchored at the lower part of the corresponding supporting pile. According to the construction method, a plurality of the prestressed supporting units are sequentially driven into soil around the to-be-excavated foundation pit, a plurality of the steel supports all face the to-be-excavated foundation pit, and a top beam is arranged at the top ends of the prestressed supporting units, so that the prestressed supporting units and the top beam form an integral body; tensile force is applied through the prestressed tendons, and the upper ends of the prestressed tendons are anchored on the top beam. According to the prestressed steel sheet pile supporting structure and the construction method thereof, the horizontal component of tensile force borne by the prestressed tendons is transmitted to the supporting structure, partial earth pressure of soil is counteracted, the supporting intensity is improved, and deformation of the supporting piles is reduced; besides, the supporting structure can be recycled, so that the cost is reduced.

The invention relates to an adjustable supporting device and a using method thereof, and relates to the technical field of assembly type building supporting. The invention aims to solve the problems that a working period is long during assembling and disassembling of an existing fastener type steel tube support, and the construction efficiency is low. The adjustable supporting device is verticallyarranged on the bottom of an assembly type prefabricated component, and comprises a steel stand column and a base connected to the bottom of the steel stand column; the steel stand column comprises an inner tube and an outer tube which are arranged in the up-down direction and are arranged in a sleeving manner; a plurality of corresponding positioning pin holes are formed in the side walls of theinner tube and the outer tube in the length directions of the inner tube and the outer tube; the inner tube and the outer tube are fixed and are coarsely adjusted through positioning latches which penetrate through the positioning pin holes; the base is provided with a rectangular or circular cross section; a through hole is formed in the center of the base; and the bottom of the steel stand column perpendicularly penetrates through the through hole and is fastened.

The invention provides a bolt support structure for a horizontal soft-hard interbedded surrounding rock tunnel, which includes a bolt supporting the surrounding rock. The surrounding rock divides the excavation surface into a left half section and a right half according to the center line of the tunnel excavation section. The cross-section, the left half-section and the right half-section are equipped with bolts for supporting the horizontal soft-hard interbedded surrounding rock, and the bolts are arranged perpendicular to the tunnel excavation contour line, and the angle between the horizontal rock formation and the horizontal rock formation is less than 35° There are no bolts arranged on the tunnel excavation outline. The invention also provides a bolt support method for horizontal soft and hard interbedded surrounding rock tunnels. In the bolt support structure and method provided by the present invention, the bolts arranged on the tunnel excavation contour line with an included angle of less than 35° with the horizontal rock formation are canceled, that is, when the tunnel excavation with an included angle with the horizontal rock formation is less than 35° No bolts are arranged on the excavation contour, thus reducing the number of bolts supported in the tunnel construction, not only can obtain a good reinforcement effect, but also save the number of bolts supported, thereby reducing the consumption of supporting materials and supporting costs .

The invention relates to the technical field of new energy power generation, in particular to a double-split transformer wire outlet structure. The double-split transformer wire outlet structure comprises three phases of three-column iron cores, and A, B and C three phases of coils which are wound around the three phases of three-column iron cores respectively; each phase of the coils comprises anupper part low-voltage coil, a lower part low-voltage coil, an upper part high-voltage coil and a lower part high-voltage coil; the upper part low-voltage coil and the upper part high-voltage coil are concentrically arranged on the upper half parts of the three phases of three-column iron cores, and the lower part low-voltage coil and the lower part high-voltage coil are concentrically arranged on the lower half parts of the three phases of three-column iron cores; the upper part low-voltage coil is connected with a first path of low-voltage sleeve through a first path of low-voltage outgoingline located on one side of the device body, and the lower part low-voltage coil is connected with a second path of low-voltage sleeve through a second path of low-voltage outgoing line located on the other side of the device body; the upper part high-voltage coil is connected with the lower part high-voltage coil in parallel, and a tapping lead is connected with a tapping switch. According to the double-split transformer wire outlet structure, the supporting number of low-pressure wood clamping pieces is reduced, the width of an oil tank is reduced, and the use amount of the transformer oilis reduced.

The invention belongs to the technical field of building material processing and application, and particularly relates to a production process of prestressed concrete laminated slab bottom plates. The production process comprises the following effective steps of cleaning the surfaces of a mold table and a mold; spraying a release agent; laying and tensioning prestressed steel bars, and placing a steel bar framework and the mold; pre-embedding water tubes and electric wire tubes; casting concrete; carrying out rough smearing; carrying out galling; carrying out maintenance and placing a lifting appliance; breaking the prestressed steel bars; removing the mold; and obtaining finished products, transferring and stacking the finished products, and the like. According to the production process, an existing production process is improved, the lifting appliance is additionally arranged before the prestressed steel bars are broken, multi-point supporting of a plate body is formed, and then the problems of plate surface warping and cracking of the laminated slab bottom plates due to the fact that the prestressed steel bars are broken are avoided; meanwhile, due to arrangement of the lifting appliance, the number of layers of the stacking places of the laminated slab bottom plates can be increased, limitation that only six layers of the prestressed laminated slab bottom plates can be stacked is broken through, the stacking places are saved, and the loading number in the transportation process is increased; and in addition, only two ends need to be supported in the stacking and using process of the laminated slabs.

The invention relates to a foundation pit supporting system based on splayed I-shaped steel and a construction method thereof. The system comprises an inner support horizontally arranged in a foundation pit, wherein the inner support comprises two sections, namely a splayed I-shaped steel support and a steel pipe support; the splayed I-shaped steel support comprises a diagonal support and diagonal braces symmetrically arranged on two sides of the diagonal support; one end of each diagonal brace is fixed to a surrounding purlin or a crown beam in the foundation pit, and the other end of each diagonal brace is fixed to the side face of the diagonal support; one end of the diagonal support is fixed to the surrounding purlin or the crown beam in the foundation pit, and the other end of the diagonal support is connected with the steel pipe support; and the other end of the steel pipe support is fixed to the surrounding purlin or the crown beam in the foundation pit through a movable head. The novel inner support with one or two ends made of the splayed I-shaped steel is designed, so that the action range of each steel support is widened, the number of the inner supports is reduced, the cost is reduced, and the construction period is shortened; and meanwhile, the operation space in the foundation pit can be enlarged, more abundant operation conditions are reserved for large machinery, the earthwork outward transport and material feeding and discharging efficiency is improved, and a more efficient and economical foundation pit steel support system is realized.