Steel strand prestressing device, applying method and prestressed steel structure stairs
A technology of applying device and prestress, which is applied in the direction of stairs, structural elements, building components, etc., can solve the problems of large construction cost and limited application range, and achieve the effect of improving bearing capacity, improving sensitivity, and simple and feasible applying device
Active Publication Date: 2021-04-06
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology
The steel cable tensioning method requires a large construction cost; the support displacement method is suitable for projects with good foundations; the elastic deformation method connects the rods and plates that make up the structure into a whole with welding or bolts. The scope of application is limited.
Method used
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Embodiment Construction
[0038] Further detailed description will be given below in conjunction with the examples.
[0039] like Figure 1-8 As shown, the steel strand prestressing device includes a base and fixed baffles 6 on both sides of the base, and the outside of the fixed baffle 6 on one side of the base is provided with an anchoring device for fixing the steel strand 1, and the fixed baffle 6 There is a through hole 9 for the steel strand 1 to pass through; it also includes a single-hole anchorage 8 arranged on the outside of the fixed baffle 6 on the other side of the base, a force-measuring device 5 passed on the steel strand 1, Backing plate 4 with through holes, clip anchor 7; the single-hole anchor 8 is composed of clip 12 and anchor ring 14, used for anchoring the steel strand 1, and is arranged on the outside of the fixed baffle 6. Put the anchor ring 14 on, and put two of the clips 12 in the anchor ring 14. When putting the last clip 12 in, you can tap it properly with a hammer to inc...
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The invention discloses a steel strand prestressing device, an applying method and a prestressed steel structure staircase. tool, force measuring device worn on the steel strand, clip anchor, the fixed baffle is provided with a through hole for the steel strand to pass through; the single-hole anchor is used to anchor the steel strand, and the The outer wall of the clip anchor is covered with a matching sleeve, one end of the clip anchor is against the force measuring device and exposed outside the sleeve, and the other end is located inside the sleeve; by reducing the exposure of the clip anchor The size of the gap is used for the application of prestress. The present invention is suitable for small-scale prestressed cable steel structure engineering, realizes the precise application of prestress, applies prestress to the steel strand by using the prestress applying device of the present invention, and applies it to the assembled prestress in the form of cross-shaped cables. Stressed steel structure stairs can improve the bearing capacity of the stairs and make the stability of the stairs better.
Description
technical field [0001] The invention relates to a prestress applying device and method, in particular to a steel strand prestress applying device, an applying method and a prestressed steel structure staircase. Background technique [0002] In steel structure engineering, steel stairs are usually reduced because of their thin materials and insufficient rigidity. Therefore, there are very few studies on prestressed steel stairs. At present, the main characteristics of prestressed steel strands in building materials are high strength and good relaxation performance. Its function is to improve the bearing capacity of components; reduce the deformation (deflection) of components under load; improve the crack resistance of components. There are four ways to apply prestress in steel structure engineering: steel cable tension method, support displacement method, elastic deformation method and manual simple method. [0003] Among them, the manual simple method is used in the case o...
Claims
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IPC IPC(8): E04G21/12E04C5/12E04F11/02
CPCE04C5/12E04F11/02E04G21/12
Inventor 徐艳李红明马苏黄洪伟覃江波
Owner JIANGSU UNIV OF SCI & TECH