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Long-span prestressed tension string beam and its construction method

A construction method and prestressing technology, applied in the direction of girders, joists, trusses, etc., can solve the problems of high risk of high-altitude operation, large one-time investment of tire frame, long installation period, etc., to achieve flexible assembly operations and reduce construction measures. The effect of investment, overall light weight

Inactive Publication Date: 2011-12-28
中铁铁工城市建设有限公司
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Problems solved by technology

The advantage of this method is that the tensioning conditions are in line with the design, and the tension is easy to control; the disadvantage is that the one-time investment in the tire frame is large, and the risk of working at heights is high. It must wait until the concrete in all steel pipe columns reaches strength before assembling work, long installation period

Method used

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  • Long-span prestressed tension string beam and its construction method
  • Long-span prestressed tension string beam and its construction method
  • Long-span prestressed tension string beam and its construction method

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Embodiment Construction

[0042] In order to further explain the technical means used by the present invention to achieve the purpose of the reservation invention, the following combined with the attached drawings and better embodiments, the specific implementation method of the Zhangxianliang structure construction method proposed by the invention is further explained in detail.

[0043] Reference figure 1 , A large span prestressed sine beam, including several unit beams assembled together, each unit beam includes two) long vertical beams 2. Several horizontal beams between the vertical beam 2 3. Several connects to the vertical directionLiangliang 2 and horizontal beam 3 of the beam 1. Several support rods 4, and pull cables 5, the upper end of the support rod 4 and the lower end of the horizontal beam 3 through the sales axis connection, the lower end of the support rod 4 is fixed with the pull cable.The two ends are fixed with the two ends of the unit beam. The pulp 5 and the unit beam form the trapez...

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Abstract

The invention relates to a construction method of wide span prestressed beam string structure, which is capable of shortening construction time under the construction quality guaranteed. The construction method of the above beam string structure comprises the following steps of: 1) tension calculation under different working conditions; 2) simulation calculation; 3) stay cable processing; 4) supporting moulding bed assembly; 5) beam string structure assembly and welding; 6) stay cable installation; 7) beam string stay cable tensioning; 8) beam string hoisting; and 9) sampling observation of the tension value of the installed beam string structure to see whether the tension value conforms to the design.

Description

Technical field [0001] The present invention involves a large span prestressed tension beam and its construction method. It is suitable for the construction of large -span rails and roofs such as railway stations and airports. It belongs to the field of construction technology. Background technique [0002] Large span railway and airports such as railway stations and airports require large spaces and high air. The current methods are generally adopted: ordinary mesh structure and steel strings beam structure.The structure of ordinary mesh requires large frame columns and small columns; steel strings beams have large span and high strength, but the overall weight is large, and steel consumption is large.Therefore, the structure of ordinary grid and the structure of steel strings cannot meet the requirements of large space, high net air function, and light quality and high -strength public building. [0003] The prestressed H -shaped steel flat combination structure Zhang Xianliang...

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Application Information

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IPC IPC(8): E04C3/02E04C3/10E04C3/11E04B1/342E04G21/00E04G21/12
Inventor 文璐米云建于建利高思禄王春生
Owner 中铁铁工城市建设有限公司
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