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A Construction Method of Concave String Beam

A construction method and chord beam technology, which can be applied to roofs, building components, buildings, etc., can solve the problems of long construction period and plane instability of the cable support body, and achieve the advantages of ensuring plane stability, shortening construction period and good economic benefits. Effect

Active Publication Date: 2018-05-04
CHINA CONSTR SCI & IND CORP LTD
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing concave string beam structure has a tendency to be out of plane instability due to its cable support system, which makes it have certain defects in engineering examples
In addition, the existing string beam construction process results in a longer construction period

Method used

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  • A Construction Method of Concave String Beam
  • A Construction Method of Concave String Beam

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] A construction method for sunken string beams, comprising the following steps:

[0021] A. Install the pipe truss at one end (not shown in the figure), and then carry out the segmental construction of the upper chord box girder 1. The construction sequence is from one end to the other. First, install the upper chord box girder 1 at one end, and in the middle of the upper chord box girder 1 Insert the roof secondary beam 2 for installation, and then install the other end pipe truss, upper chord box girder 1 and roof secondary beam 2;

[0022] B. Install the strut 3;

[0023] C. Install the lower string cable. The cable includes the main cable 4 and the corner support rod 6. The main cable 4 is stretched at both ends at the same time. The ten...

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Abstract

The invention relates to the technical field of beam string structure construction, in particular to a construction method for a U-shaped beam string structure. The construction method comprises the following steps: A, installing a pipe truss of one end, and then, performing section construction of an upper string box beam, wherein a construction sequence is that construction is performed from one end to the other end; firstly, installing the upper string box beam of one end, inserting roof secondary beams into the upper string box beam, and then, installing a pipe truss, an upper string box beam and roof secondary beams of the other end; B, installing struts; and C, installing a lower string stay cable, wherein the stay cable comprises a main cable and knee-bracing tension rods; in a tensioning process of the lower string stay cable, each upper string box beam may produce an upward displacement, and automatically separates from a temporary support frame to realize automatic unloading. According to the construction method, a tensioned unit is enabled to be located below lateral restraints of structures of two sides in a structural plane, and therefore, plane stability of the beam string structure is guaranteed during tensioning construction, and structural stiffness of the beam string structure at the construction stage is guaranteed.

Description

technical field [0001] The invention relates to the technical field of tension beam construction, in particular to a construction method for a concave tension beam. Background technique [0002] The string beam structure is a large-span prestressed self-balancing structural system developed in recent years. It generally consists of three parts: the upper chord rigid compression steel beam or steel truss, the lower flexible prestressed cable, and several braces between the two. Composition, its basic force characteristic is that by tensioning the lower chord high-strength cables to make the struts generate an upward thrust, so that the upper chord rigid beams generate an internal force opposite to that under the external load, reducing the deformation of the overall structure and improving the bearing capacity of the structure . The tension string beam structure system is simple, the force is clear, the structural forms are diverse, and the advantages of rigid and flexible m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B7/14E04B1/342E04G21/14
CPCE04B1/342E04B7/14E04G21/14
Inventor 杨伟伟何金金李爱国韩会平李真文微董磊张耀天黄文宇刘鹏
Owner CHINA CONSTR SCI & IND CORP LTD
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