52 results about "Wide bridge" patented technology

The invention mainly discloses a horizontal telescopic ultra-span bridge inspection vehicle. Its technical proposal includes a vehicle body, a turning platen, a connecting rod oil cylinder, connecting rods and a truss as a whole. The vehicle body is provided with a large turntable. The inside of the large turntable is provided with a slideway, and the telescopic arm and the telescopic oil cylinder are arranged in the slideway, and the telescopic oil cylinder pushes the telescopic arm to move left and right in the slideway so as to push the turning table to move left and right. There is a bracket, and a counterweight is provided on the bracket, and the counterweight includes a counterweight oil cylinder and a counterweight, and a safety device is provided on the turning table, and the safety device includes a reel, wound on the reel safety rope and binder. The invention can realize the horizontal expansion and contraction of the whole truss, increase the spanning width, expand the use range of the bridge inspection vehicle, change the position of the counterweight center, improve the use performance of the inspection vehicle, and improve the operation safety of the bridge inspection vehicle.

The invention relates to a hollow slab wide bridge structure for reinforcing hinge joints through batch transverse tensioning and a construction method of the hollow slab wide bridge structure.The hollow slab wide bridge structure comprises prefabricated hollow slabs which are arranged continuously in the transverse direction of a bridge side by side, each hinge joint is arranged between every two adjacent prefabricated hollow slabs, a bridge surface pavement layer is poured above the prefabricated hollow slabs and the hinge joints, and prestressed steel beams are tensioned transversely in batches inside the prefabricated hollow slabs.The construction method comprises the steps of prefabricating the hollow slabs; hoisting the first batch of prefabricated hollow slab sets, and making the first batch of prestressed steel beams penetrate through the first batch of prefabricated hollow slab sets; pouring hinge joint concrete among the first batch of prefabricated hollow slab sets, after design strength is achieved, tensioning the prestressed steel beams transversely, and conducting grouting and anchor sealing; hoisting the second batch of prefabricated hollow slab sets, and meanwhile making the second batch of prestressed steel beams penetrate; conducting the batch transverse tensioning construction procedure of remaining prefabricated hollow slab sets as mentioned till the prestressed steel beams are tensioned completely; pouring the bridge surface pavement layer, and forming the bridge after strength of the bridge surface pavement layer is achieved.The hollow slab bridge is simple in structure, and in addition, the transverse prestressed tensioning defects of an assembly type hollow slab wide bridge are effectively overcome.

The invention relates to a novel double-curved arch bridge. The arch bridge includes a main girder, a main arch rib, an auxiliary arch rib, a side suspender and a middle suspender. Both sides of the main girder are provided with a parabolic main arch rib. There are multiple parabolic auxiliary arch ribs between the two main arch ribs, the two ends of the main arch ribs (i.e. The main arch rib is fixed. Compared with the prior art, the present invention reduces the stress on the beam for wide bridges due to the addition of suspenders and auxiliary arch ribs between the parabolic main arch ribs, which is beneficial to reduce the height of the beam and control the width of the wide bridge. structure height.

The invention provides a calculation method, based on a modal analysis method, of the transverse distribution coefficient of a single-box and multiple-chamber wide girder bridge. The sensitivity factor and the sensitivity level of the transverse distribution coefficient of the wide bridge are determined by universal limit element software. Heavy numerical simulation is performed through parameterized programming for analysis, a simplified calculation method applicable to the transverse distribution coefficient of the wide bridge is obtained through solid model comparison, model tests, field tests and other contrasts, convenience is brought to design of the wide bridge, the project design quality can be improved, and the calculation method plays active roles in raising the refined design level of the wide box girder bridge, guaranteeing the structural durability of the bridge, reducing bridge diseases and reasonably controlling the project cost.

The invention discloses a bottom width overhaul hanging basket of a bridge, which solves the problems that a bridge overhaul car and a vessel are not applicable to the large or oversize bridge with a wider deck and greater height in the prior art. The overhaul hanging basket comprises a travelling mechanism and a working platform, wherein the travelling mechanism comprises a first travelling mechanism and a second travelling mechanism capable of travelling along the two sides of the deck; the working platform comprises a first working platform and a second working platform; the first working platform is detachably arranged below the first travelling mechanism; the second working platform is detachably arranged below the second travelling mechanism; the first working platform and the second working platform are located below the bridge during working; and the end part of the first working platform is detachably connected with the end part of the second working platform. The overhaul hanging basket is applicable to the wider bridge, can improve the construction or overhaul efficiency of the bridge, and is free from the limitation of the height of the bridge.