49results about How to "Avoid construction difficulty" patented technology

The invention discloses a support-free steel structure spiral staircase, which comprises a reinforced platform (1), stair steps (2), skirting waistline (3), railing handrails (5), the skirting waistline (3) The lower corner is welded to a reinforced platform (1); the stair steps (2) are welded to the skirting waistline (3), and multiple support columns (6) are arranged on both sides of the stair steps (2); The supporting column (6) is embedded in the skirting line (3) and fixed by welding, the supporting column (6) and the skirting line (3) are provided with grooves, the glass guardrail (4) is embedded in the groove, and the railing handrail (5) Fix it on the glass guardrail (4) through the connector. The invention can ensure the load bearing and force requirements, realize the feasibility of support-free technology, reduce the construction period, and reduce the construction difficulty; and can effectively prevent the occurrence of common quality problems caused by unbalanced force and fracture, and control the problem of serious material loss.

The invention relates to a high-altitude large-cantilever concrete structure structural steel supporting platform. The high-altitude large-cantilever concrete structure structural steel supporting platform comprises a multi-truss structural steel triangular supporting bracket, a box iron horizontal connecting beam and a plurality of box iron horizontal purlines. The multi-truss structural steel triangular supporting bracket comprises a main beam, a horizontal rod, a vertical rod, a first inclined supporting rod and a second inclined supporting rod. The main beam is installed on a boundary beam of a frame structure on the next layer of a cantilever structure needing to be constructed, the first inclined supporting rod and the second inclined supporting rod are installed on a boundary beam of a frame structure on the next second layer and a boundary beam of a frame structure on the next third layer of the cantilever structure needing to be constructed respectively, the horizontal rod is connected with the first inclined supporting rod and the second inclined supporting rod, the joint of the second inclined supporting rod and the horizontal rod is connected with one end of the vertical rod, the other end of the vertical rod is connected with the main beam, the box iron horizontal purlines are welded to the upper surface of the main beam in a laying mode and are used for erecting a formwork support and an external scaffold, and multi-truss structural steel triangular supporting brackets are connected through box iron horizontal connecting beams in a welding mode. The high-altitude large-cantilever concrete structure structural steel supporting platform solves the problem that the construction difficulty of an ultrahigh and large-cantilever structure with large component loads is high.

This application relates to an integrated deep-water foundation and its construction method, and relates to the technical field of bridge deep-water foundations, including multiple suction single wells, multiple steel pipe columns, multiple bored piles and caps. The steel casing used for bored pile construction, and the steel pipe column and the single suction well are an integrated structure prepared in advance. After the drainage operation of the single suction well, the steel pipe column and the single suction well can sink to the design elevation. There is no need to erect a large jacket platform and carry out processes such as hoisting, turning over, and sinking of steel casings in the marine environment with harsh swell conditions, and the suction well base and steel pipe columns can participate in the stress of the deep water foundation during the bridge use stage Among them, the free length of the single pile can be effectively reduced, and the horizontal and vertical bearing capacity of the pile body can be improved. Therefore, the application can not only reduce the construction risk, difficulty and cost, but also shorten the construction period and improve the horizontal bearing capacity and vertical bearing capacity of the pile body.

The invention discloses a jacking process for an underwater cable-stayed floating tunnel. It includes prefabricating all the pipe joints of the underwater floating tunnel in the land prefabrication field, and then transporting them to the shore structure on the pushing side through the land slope tunnel, followed by secondary outfitting, docking with the subsequent pipe joints and sealing them into the water, and then putting them into the water. The pipe joints are pushed up section by section to the shore structure on the receiving side; the stay cables are installed on the pipe joints one by one along with the jacking and pulled into the cable anchorage pier; The concrete on the outer surface of the pipe joints at both ends of the floating tunnel in the water is poured in the shore structure to complete the consolidation of the pipe joints at both ends of the floating tunnel in the water. Adjust the cable force of the stay cables on the anchorage pier and seal the anchor. The jacking process of the present invention is less affected by wind, waves, currents, and ship waves, which greatly reduces the risk of man-machine safety in offshore construction, and has extremely high construction efficiency and short construction period.

The invention discloses a staggered splicing type steel plate-RPC anti-detonation door and a construction method thereof. According to the anti-detonation door, a cavity formed by a door leaf front side steel plate, a door leaf reverse side steel plate and a plurality of inner ribbed beams is filled with an RPC inner core. The construction method of the anti-detonation door comprises the steps that firstly, the door leaf front side steel plate, the door leaf reverse side steel plate and the inner ribbed beams are manufactured according to the size; secondly, the number of needed steel bars is calculated; thirdly, steel bar holes are formed in the inner ribbed beams in the length direction; fourthly, the door leaf front side steel plate is welded to the odd-number inner ribbed beams, and the door leaf reverse side steel plate is welded to the even-number inner ribbed beams; fifthly, the door leaf front side steel plate and the door leaf reverse side steel plate are spliced in a staggered manner, and the steel bars penetrate the steel bar holes; sixthly, reactive powder concrete is poured in the cavity formed by the door leaf front side steel plate, the door leaf reverse side steel plate and the multiple inner ribbed beams and is standing for 48 h; seventhly, the anti-detonation door is conveyed into a steam curing room at the temperature of 90 DEG C to be cured for 72 h; and eighthly, after 28 days, the RPC and the steel plates are effectively bonded to form the steel plate-RPC anti-detonation door. The staggered splicing type steel plate-RPC anti-detonation door and the construction method thereof are applied to anti-detonation protection projects.