34results about How to "Improve section properties" patented technology

The invention provides a precast lattice beam used for slope reinforcement and a construction method for slope reinforcement adopting the precast lattice beam, as well as a slope structure reinforced by the precast lattice beam and a construction method thereof. The precast lattice beam comprises a plurality of precast cross-shaped beam units which are arranged and connected in a matrix manner; each of the cross-shaped beam units comprises a transverse beam and a longitudinal beam in intersection; an anchor head part is formed in the central interacting part of each of the cross-shaped beam units; each of the anchor head parts comprises a concrete groove and a backing plate placed on the concrete groove; an anchor hole is formed in each of the concrete grooves and the backing plates; the two end parts of the transverse beam and the two end parts of the longitudinal beam of each of the cross-shaped beam units extend respectively to form L-shaped hook parts reversed in directions; the transverse beam of each of the cross-shaped beam units is connected with that of the adjacent cross-shaped beam unit in a hooking manner through the corresponding L-shaped hook parts; the longitudinal beam of each of the cross-shaped beam units is connected with that of the adjacent cross-shaped beam unit in a hooking manner through the corresponding L-shaped hook parts; therefore the precast lattice beam is formed by splicing a plurality of structures taking the shapes of the Chinese character jing. According to the precast lattice beam used for slope reinforcement, the manufacturing method thereof and the construction method for slope reinforcement adopting the precast lattice beam, the following characteristics are achieved: on-the-spot construction steps are reduced, the construction period is shortened, the standardized management production is realized, the quality is ensured, and high efficiency and environment protection are realized.

The invention relates to a movable building structure and a making method thereof. The movable building structure is characterized in that the movable building structure comprises a bearing frame and a building enclosure fixedly connected to the bearing frame through bolts, and a doorway for mounting a door or a window opening for mounting a window is formed in the building enclosure according to the position of the door or the window; the bearing frame comprises stand columns, main girders connected between the stand columns and secondary girders connected between the main girders; the stand columns, main girders and secondary girders are each provided with two pairs of box iron arranged at intervals and with inwards-turned edges, the cold-formed thin walls of the box iron are in a C shape, two wings of one pair of box iron are welded to the backs of two webs of the other pair of box iron, the inner surfaces of the stand columns, or the main girders or the secondary girders are enclosed to form a through strip-shaped cavity, and the section of the cavity is square or rectangular; the stand columns and the main girders are each provided with a plurality of brackets and connection plates with mounting holes at intervals in a welded mode, and the bottom of each stand column is fixedly connected with a column foot; the two ends of each main girder and the secondary girder are each provided with a head plate with mounting holes in a welded mode. The multi-layer movable building structure can be used temporarily as well as permanently.

The invention relates to a spinneret plate, a profiled filament processed by utilizing the same and a preparation method thereof. The spinneret orifices of the spinneret plate are trilobal, are symmetrical around the x,y and z shafts which mutually form the included angle of 120 degrees and are connected by the bottom edges of the minimum circumscribed isosceles triangles A, B and C of trefoil to form an equilateral triangle D; the included angle of the side and the height of A, B or C is 5-25 degrees; the contour line bc line of the trilobal is selected from two or a plurality of and two sections of or a plurality of sections of straight lines and quadratic curves and is formed by connecting in the minimum circumscribed isosceles triangle; and the contour lines ab line and the cd line of the trilobal are smoothly transiting curves. The spinneret plate can be used on a fusant direct spinning device with an on-line adding function, and fiber has the characteristic of high gloss by utilizing the phenomenon that the spinneret plate and the profiled filament prepared by the corresponding spinning process have better mirror reflection effect.

The invention provides a prefabricated prestressed concrete anchorage pier for slope strengthening and manufacturing and construction methods thereof. The prefabricated prestressed concrete anchoragepier comprises a prestressed concrete anchorage pier unit provided with a cross beam and a longitudinal beam which are crossed into a cross shape, concrete ribs located on the periphery of the prestressed concrete anchorage pier unit, and an anchorage head part located at the crossed position of the cross beam and the longitudinal beam; and prestressed reinforcements are arranged in the cross beamand the longitudinal beam. The prefabricated prestressed concrete anchorage pier adopts prestressed concrete lattice beams, the section property of the beams can be improved, larger anchorage force is borne, and the defect that when traditional cast-in-place reinforced concrete lattice beams are under large anchor cable anchorage force, the midspan positions of the reinforced concrete lattice beams can be pulled cracked possibly, and consequently the rigidity of components is lowered is overcome; and according to the prefabricated prestressed concrete anchorage pier, a manufacturing process can further be simplified, mounting is convenient, adjusting is easy during mounting, the construction period is shortened, and the construction cost is saved.

The invention belongs to the technical field of steel structure buildings, and particularly relates to a manufacturing process of welding I-shaped steel for a steel structure. The manufacturing process is characterized by comprising the following steps: (1) blanking of an upper flange plate, a lower flange plate and a web plate; (2) forming and correcting of the upper flange plate or the lower flange plate; (3) web plate forming; (4) assembly of the upper flange plate, the lower flange plate and the web plate; (5) welding of the upper flange plate, the lower flange plate and the web plate; (6)correcting; and (7) relief of internal stress. The steel-structure welded I-shaped steel flange plates with the inclined surfaces manufactured with the manufacturing process not only reserve the excellent section characteristics of the traditional I-shaped steel, but also overcome the defect that the traditional I-shaped steel cannot be used for processing a section material for a large-section structure.

The invention discloses an assembled low-energy consumption integrated wall. The assembled low-energy consumption integrated wall comprises a mortar board, a thermal insulation plate moisture-proof film, a structural board, a sound insulation board, an aerogel plate and an interior board. The mortar board comprises a reinforcing mesh and filling mortar. The bonded reinforcing mesh is put into a casting basin and the filling mortar is added into the casting basin so that a mortar plate is obtained. The aerogel plate is tightly close to the mortar board. The sound insulation board comprises a keel and glass fibers. Gaps formed by the keel are filled with the glass fibers. The keel is a skeleton prepared from C-shaped section steel connected through bolts and nuts according to a wall structure. The structural interior board is arranged at the innermost layer of the wall. The mortar board, the structural board, the moisture-proof film, the sound insulation board, the aerogel plate and the interior board of the wall are fastened to form an integral body through elf-drilling screws. The wall has the advantages of low energy consumption, low pollution, short construction period and excellent heat insulation performances.

The invention discloses a method for lifting the base plane of a power transmission line tower by adopting a steel pipe connecting leg, and relates to the technical field of high-voltage power transmission lines. The method comprises the following steps of lifting an angle steel tower; connecting a steel pipe main member with an angle steel tower main member by using a flange; connecting the main members with a diagonal member by using a plug board; embedding steel pipe pins. According to the method, the problems of higher earth filling time consumption and strict construction quality requirements of an earth filling scheme can be effectively solved, the condition that a body work amount is increased by the great horizontal displacement of the ground when a pile foundation scheme is adopted is avoided, and the shortcomings of long concrete curing time and larger using amounts of reinforcements and concrete of a reinforced concrete frame structure scheme are overcome.

The invention relates to a manufacturing and construction method for a slope reinforcing assembled pre-stressed anchor cable frame beam. The slope reinforcing assembled pre-stressed anchor cable framebeam can improve the section performance of the beam and bear a larger anchoring force, and overcomes the defect that the rigidity is reduced as reinforcing steel bars of members in precipitation frequent areas because a conventional cast-in-situ reinforced concrete lattice girder is subjected to a relatively large anchoring force of an anchor cable. The mechanical property is improved greatly. The thickness of the beam body or the stressed reinforcing steel bars can be further reduced, and the utilization of materials is improved, so that the beam is more economical. The pre-stressed anchorcable frame beam is formed by splicing a plurality of prefabricated beam body units which are manufactured more easily, mounted more lightly and adjusted more easily when being mounted, so that the construction period is shortened greatly.

The invention discloses a C type steel structure, which comprises a steel body (1). The upper part of the steel body (1) is provided with a concave part (5); the steel body (1) is provided with a left side plate (3) and a right side plate (4) respectively, and the left side plate (3) and the right side plate (4) are respectively equipped with a reinforcing unit (6-1) and a reinforcing unit (6-2); the left side plate (3) and the right side plate (4) are in fixed connection with a top plate (2) through support triangular plates (7) respectively; and the steel body (1) is equipped with a fireproof layer (8).

The invention relates to a dual-arc steel section structure design method, in particular to a structure design method for a transmission tower material in the electric power transmission process. The dual-arc steel section structure of the scheme comprises a vertex angle and a limb plate, wherein the vertex angle is a flat reinforcing plate, and the connecting part of the limb plate and the reinforcing plate is in a relative S-shaped arc section. By adopting the cold-bending technology, a reasonable section shape in the optimized material distribution can be produced according to the need; and with the help of the advantages of the traditional hot-rolled angle steel and by combining the cold-bending technology, the dual-arc steel section structure of the scheme adopts a double S-shaped radian design, the ratio of the free extension length to the thickness of a flange plate can be optimized according to the need, the steel strength reduction due to stable strength is reduced, and the strength utilization ratio of member materials is improved. Compared with the traditional hot-rolled angle steel, the structure has better section characteristics through the arc design of the connecting points and the angle-strengthened protruding cold-bending processing, and the section bearing capacity is greatly improved.

The present invention provides a door panel that comprises an outer panel and an inner panel joined together at adhering portions and, regardless of whether rib portions are formed on the adhering portions in order to prevent deformation of the adhering portions or for other purpose, can be modified to withstand severe heat by means of formation of large ventilation openings in the adhering portions without significantly impairing the shape or the strength of the door panel.

The invention discloses an environment-friendly prefabricated fast-assembly lattice beam and a construction method. The lattice beam comprises a lattice beam body; the lattice beam body is in a grid shape and is formed by arranging and connecting a plurality of cross-shaped beam bodies; each cross-shaped beam body is of a reinforced concrete structure; a concrete groove for containing an anchor head is formed in the center intersection of a cross beam and a vertical beam of each cross-shaped beam body; a base plate is arranged in each concrete groove; the base plates and the concrete grooves are provided with corresponding anchor holes; and ecological geotextile bags are placed in grids of the lattice beam body. The lattice beam has the advantages of short construction period, manpower andmaterial resource saving, environmental protection and the like, can be disassembled and assembled, and can realize industrialization.

The invention belongs to the technical field of building materials, and particularly relates to an energy-saving dry and wet dual-use composite building mortar. The composite building mortar comprises, by mass, 260-410 parts of cement, 500-700 parts of sands, 8-50 parts of electric furnace slag, 10-100 parts of crushed aggregates, 5-20 parts of dry powdered lime, 2-5 parts of sludge, 2-5 parts of silt and 12-35 parts of dry powder latex; and the crushed aggregates adopt chippings or rubbles. The dry powder latex is used as a polymer material to effectively improve the cross-section performance, and the flexibility of the dry powder latex is combined to easily carry out accurate measurement and improve the construction convenience, so the construction quality can be effectively improved.

The invention relates to an integrated platform for construction in a C-shaped steel core tube. The integrated platform comprises a scaffold operation frame body, an upper steel platform, a triangular supporting frame, a connecting device, a movable fastening device and a lower steel frame protection body. A scaffold operation frame body is fixed to the working face of an operation platform formed by connecting the two rows of triangular supporting frames and the upper steel platform, and the triangular supporting frames and the lower steel frame protection body are connected into a whole through connecting devices. And a fixing piece at the lower part of the lower steel frame protection body is clamped in a movable fastening device in a shaft wall body so as to provide protection for the interior of the core tube shaft. The platform is high in safety, and safe construction of constructors in the core tube can be effectively guaranteed. Operation is easy and convenient, installation and use are convenient, off-site pre-assembly can be achieved through the platform, and the labor cost is reduced. And the C-shaped steel frameworks of the operating platform are connected through the connecting steel sheets and the T-shaped bolts, so that the C-shaped steel frameworks are convenient to disassemble and transfer and can be repeatedly used.

The invention belongs to the technical field of steel structure construction, and particularly relates to steel structure welded I-steel. The steel structure welded I-steel is characterized by comprising a horizontal upper flange plate and a lower flange plate connected with the upper flange plate through a vertical web; the upper flange plate is composed of a flange inclination steel plate and rounded corners arranged at the ends of the flange inclination steel plate, and the lower flange plate is composed of a flange inclination steel plate and rounded corners arranged at the ends of the flange inclination steel plate; and the upper flange plate and the lower flange plate are symmetrical about a horizontal central axis. The steel structure welded I-steel is formed by welding the flange plates with inclined planes, the excellent cross-section characteristics of traditional I-steel are retained, and the defect that large-cross-section structural profiles cannot be processed with the traditional I-steel is overcome.

The invention provides a three-sided punched C-shaped steel channel provided with six reinforcing ribs. The section form of the steel channel is of a C-shaped structure, end parts of two sides of thesteel channel are bent inwards continuously, secondary L-shaped structures are formed, sawtooth structures are arranged at the end parts of the sides, the steel channel is provided with three sides, two parallel reinforcing ribs are arranged on each side, and a plurality of through holes are formed between the two reinforcing ribs. With the adoption of the six reinforcing ribs, strength of the C-shaped steel channel is further improved, and the C-shaped steel channel is prepared by cold bending machining, has the advantages of thin wall, light dead weight, excellent section performance and high strength, and can save materials under the same strength when compared with the traditional steel channel.