32results about How to "Safe and fast construction" patented technology

The invention discloses a half-through steel truss-concrete combined continuous steel bridge. The steel bridge comprises a main truss beam which consists of steel truss beams, wherein an upper chord, a middle chord and a lower chord are respectively arranged on each steel truss beam; a steel box-concrete combined structure formed by concrete bridge road plates is formed between the middle chords. The concrete bridge road plate is arranged at the position of the middle chord, the upper chord of the main beam in the hogging moment section of the top of a continuous steel bridge pier is pulled, the lower chord is compressed, and the concrete bridge road plate is basically positioned in the compressed section; the middle chord of the main beam in the sagging moment section of the continuous steel bridge and the combined structure with the concrete bridge road plate are the specific compressed section, the lower chord is the specific pulled section, and the problem of the cracking caused by the pulling of the concrete bridge road plate; the upper structure of the bridge is constructed in an assembly manner, the construction period is shortened, each construction link and the quality are easy to control, the stressing of the bridge is clear, and the construction is safe and fast.

The invention discloses a construction method utilizing a steel-strand strand pulling machine to perform fast strand pulling during construction of prestress structures, which belongs to the technical field of building construction. The steel-strand strand pulling machine is provided with two pairs of pressing wheels capable of clamping steel strands to advance or retreat are arranged at intervals. The steps are that fixing the steel-strand strand pulling machine on a movable strand pulling platform through a pull piece in suspension mode, cleaning mortar on a mortar filling port of an anchorbacking plate on an opening of a prestress hole passage, then connecting the steel-strand strand pulling machine with the prestress hole passage to be strand-pulled, further utilizing the steel-strand strand pulling machine to enable the steel strands to be strand-pulled according to numbers till the steel strands reach predetermined positions, utilizing a cutting device to cut off the steel strands, and accordingly the strand pulling work of one steel strand is completed. Repeating the steps till the strand pulling work of all the steel strands of the prestress hole passage is completed, andthe steel strands are automatically bundled according to stacking mode after cut from bottom to top. The construction method utilizing the steel-strand strand pulling machine to perform fast strand pulling during construction of prestress structures integrates fast blanking, fast bundling and fast stand-pulling into a whole, thereby being convenient to operate and fast and efficient in strand-pulling construction.

The present invention provides a lifting type building, which includes a floor, a wall, and a metal roof panel; it is characterized in that the wall is directly fixed on the floor, and the floor under the wall is evenly arranged with A number of foundations under the wall; several rows of central columns are evenly arranged on the floor inside the wall, continuous section steel is arranged on the inner surface of the wall, steel roof trusses are fixedly installed on the central columns, and the steel roof trusses The ends are respectively fixedly connected on the continuous section steel; the lifting type building and its construction method method of the present invention use the roof wall connection support instead of the skin to transmit the shear force, so that the design method is more in line with the domestic norms; the lifting wall is It is an enclosure component and also the main load-bearing and force-transmitting component. It is prefabricated on the poured indoor floor (including the decorative structure), installed and positioned by a crane, and supported by temporary supports at the same time; the exterior facade is beautiful and durable, and the construction is more efficient. Safe and fast.

The invention discloses a circle centering tool for drawing circles, which belongs to the field of municipal construction tools. The invention comprises a vertical rod, on which a height adjustment ring capable of moving up and down along the vertical rod is sleeved, and the height adjustment ring is fixedly connected with the inner ring of the bearing; a connection block is fixedly arranged on the outer wall of the bearing outer ring, and the connection block is hingedly connected with the telescopic rod , the telescopic rod is perpendicular to the vertical rod; the telescopic rod is sleeved with a marking pen capable of moving left and right along the telescopic rod. Firstly, place the truncated conical carrier on the hole of the cover plate. The truncated circular carrier will not fall when it is located in the hole of the cover plate, and the outer wall of the truncated circular carrier is closely attached to the well wall. The vertical rod is inserted into the vertical rod bearing socket, and the vertical rod bearing socket is coaxially arranged with the conical platform; therefore, the center of the vertical rod bearing socket is the center of the shaft. According to the construction situation, adjust the height of the nib of the engraving pen by adjusting the height adjustment ring; according to the construction situation, adjust the length of the telescopic rod, and use the engraving pen to draw a circle. Construction personnel can cut and reinforce the construction area according to the drawn area.

The invention discloses a through prestress steel truss and concrete combined continuous steel structure bridge and a construction method of the bridge. Upper chord members and lower chord members of a steel truss beam are respectively in hollow structures, vertical prestress steel bundles are arranged inside the upper chord members of the steel truss beam for bearing the hogging moment, concrete is filled inside the lower chord members, concrete bottom plates are formed between the lower chord members in a cast-in-situ way, the concrete is filled in the upper chord members of the steel truss beam for bearing sagging moment, the lower chord members are fixedly connected for forming steel bridge panels, and the concrete bottom plates and the steel bridge panels form bridge surface bases. The concrete consumption is obviously reduced, because the bridge surface is positioned in a position corresponding to the lower chord rods, the steel structure bridge has higher universality and can be applicable to environment with confliction in height differences between the headway and the pavement at two ends of the bridge, the bridge surface height can be reduced and regulated according to environment requirements, the navigation under the bridge and the smooth butt joint between the bridge surface and the pavements at two ends can be ensured, great construction transformation on the pavements at two ends is avoided, and the construction cost is greatly saved.

The invention relates to a method for reinforcing micro-piles to control the lateral uneven settlement of wide embankments of high-speed railways. The reinforcing method includes the following steps: leveling the surface of the foundation, filling the embankment body on the foundation, and designing micro-pile piles on the body of the embankment Point position and corresponding pile diameter, and determine the depth of micro-piles at each pile point position according to the pile point position, so that each area of ​​the designed embankment body meets the corresponding compaction standards, lay micro-pile at the pile point position, and lay on the embankment body Cushion and bedding. Compared with the prior art, the present invention uses chemically improved soil with low economic cost and poor ability to control settlement as the filling material of the embankment body, and arranges micro-piles with uniform density and length running through the embankment body under the main line. The arrangement density and depth of the micropile decrease linearly with the increase of the distance from the main line reinforcement area, which can ensure the control of the horizontal uneven settlement effect of the high-speed rail wide embankment while reducing the economic cost of the embankment, and the construction is convenient and rapid.

The present application relates to a floating erection method of a bridge, comprising the following steps: setting an installation platform next to the abutment on one side of the bank; assembling a rotating device on the abutment; assembling a beam body on the installation platform , and connect one end of the beam body with the rotating device; connect the tugboat with the beam body, and drive the beam body to rotate around the abutment to a set position through the tugboat; drop the beam. This method assembles the beam body on the installation platform without setting up temporary structures such as guide beams and brackets beside the pier, which simplifies the construction steps; the tugboat supports one end of the beam body by using the buoyancy of the water, and the other end passes through the rotation of the bank. The device is supported to form a force-bearing structure in a simply supported state. When the tugboat is driving the beam body to rotate, the beam body is in a simply supported equilibrium state, which is easy to control and is not prone to overturning, which improves safety; The addition of permanent structures such as the prestressed structure of the cap and the rotating structure of the pier column reduces the difficulty of construction.

The invention relates to a non-grouting-molded inorganic thermal insulation board and a preparation method thereof. The components of the grouted-molded inorganic thermal insulation board are: 500-600 parts of high-alumina cement, 100-200 parts of ordinary silicon cement, desulfurization 100-200 parts of gypsum, 350-450 parts of vitrified microbeads, 3 parts of hydroxypropyl methylcellulose, 1 part of 6mmPP fiber, 8 parts of glass fiber mesh, 4 parts of non-woven fabric, 4 parts of animal protein foaming agent, 1000 parts of water. The grouting-molded inorganic thermal insulation board has high strength, is not easy to pulverize, has low water absorption, strong adhesion to the wall, is not easy to fall off, and has low thermal conductivity, which has a good energy-saving and thermal insulation effect. Therefore, the grouting molding The inorganic thermal insulation board has two functions of fire prevention and energy-saving insulation at the same time, so that the building is safer and more energy-saving, and the building meets the requirements of energy-saving, environmental protection, and green buildings.

The invention discloses a safe and quick construction method for pouring cylinder body concrete. The safe and quick construction method comprises the following steps: A, mounting a coaming; B, mounting a lifting frame: arranging a plurality of screw rods pointing upwards on the ground of the outer side of a cylindrical structure of a steel frame, mounting a screw rod lifting device on each screw rod, separately arranging arc-shaped guide rails on the screw rod lifting devices and splicing the arc-shaped guide rails to form an annular guide rail; C, mounting a safety fence: mounting a movable base on the annular guide rail, and mounting a circular or square safety fence on the movable base; D, pouring, E, drying and solidifying. By adoption of the mode, the safe and quick construction method for pouring the cylinder body concrete, disclosed by the invention, has the advantages that by matching the screw rod lifting devices with the movable base, convenience and safety of construction of an operator are greatly improved, the construction speed is high, and more time and labor are saved; no traditional working platform needs to be set up, so less time is consumed, and higher safety in construction is realized.

A bridge space radioactive concrete-filled steel tube bridge pier comprises a flange, a plurality of bridge pier bottom stiffening plates, four bridge pier support beams, six tie beam stiffening plates, four pier top anchor plates and a plurality of tie beam stiffening plates. Four mounting positions in even distribution along the circumferential direction are reserved on the top surface of the flange; bottom walls of the four bridge pier support beams are mounted at the four mounting positions on the flange respectively; a tapered space is formed by encircling of the four bridge pier support beams, and the cross section of the tapered space is decreased gradually from top to bottom; one pier top anchor plate is mounted on the top wall of each bridge pier support beam; and a plurality of anchor bolt preformed holes in even distribution are reserved on each pier top anchor plate. A pile foundation of the bridge pier is centralized blow a bearing platform, and occupied urban space is small. Formwork-free pouring of bridge pier concrete pouring is achieved, and the bridge pier is convenient and efficient to construct, safe and rapid, excellent in structural behavior of rod pieces, higher in rigidity of a main beam, good in stability and the like. The invention further relates to a construction method of the bridge space radioactive concrete-filled steel tube bridge pier.

A PCSS shear force coupled construction, comprising a steel structure (2) and an assembly-type prefabricated concrete bridge road plate. The prefabricated concrete bridge road plate comprises a concrete bridge road plate body (1) and a shear transferring structure (3) integrally cast with the concrete bridge road plate body (1) via a shear connector, and is fixedly mounted on the steel structure (2) via the shear transferring structure (3). Directly mounting the assembly-type prefabricated concrete bridge road plate on the steel structure (2) during the construction process facilitates the control of the construction process, significantly reduces the construction cycle, and exposes the coupling part of a composite beam, thus facilitating daily monitoring and maintenance, requiring less time out of service during maintenance and repair, and ensuring normal use of a bridge.

A bridge magnetic levitation pushing system comprises a magnetic levitation pushing main beam hollow box-shaped structure and a magnetic levitation pushing platform. The magnetic levitation pushing platform comprises a pushing platform base, two bottom surface steel plates, two electromagnets, two Teflon sliding plates and a plurality of steel tube concrete rollers. The magnetic levitation pushing main beam hollow box-shaped structure comprises a steel truss abdomen bridge framework and two permanent magnets. According to the bridge magnetic levitation pushing system, by means of the repulsive force of a magnetic field, the magnetic levitation pushing main beam hollow box-shaped structure is pushed so that friction force and resistance in pushing-pulling traction can be reduced and continuous pushing operations can be carried out, pushing is needless to be interrupted, the construction progress is quick, construction is safe and efficient, construction cost is reduced, noise is low in pushing, fuel is needles, environment is protected, energy is saved, and operations are simple. The invention further relates to a two-stage cantilever manufacturing method.

The invention discloses a space truss formwork supporting system and a construction method thereof; the space truss formwork supporting system comprises a precast tubular pile arranged in the water, a steel hoop fixed on the precast tubular pile, a concrete bearing table formed at the top of each pile by casting and a steel tube stand column, a diagonal draw bar used for connecting the stand column and a truss chord member node, a space truss composed of the steel tube and fastener embedded in the bearing table; a jacking is mounted on the stand column of the space truss, the wood brace is arranged on the jacking, a template is mounted on the wood brace for binding the reinforcing steel bar and casting the concrete beam slab. The space truss formwork supporting system takes the precast tubular pile as the fulcrum in the limit situation of the topographic condition, the non-floor type space truss formwork supporting system is used for the construction of the beam and slab reinforcing steel bar and concrete, the conventional vertical support system is changed into the space horizontal support system; the computer analog technology is adopted and the space truss is made of the steel tube and used as the bearing support system of the cast-in-place beam and slab, the structure safe construction is guaranteed and the construction is quick and safe.