Beam string structure having load alleviation function and implementing method

Abstract

The invention discloses a beam string structure that has load relieving effect and a construction method. The beam string structure includes an upper string beam, a stay bar, a lower string cable of the beam string, a pedestal and a load relieving device; the load relieving device consists of a small gear turnplate, a large gear turnplate, a cable and a heavy object, the small gear turnplate and the large gear turnplate are engaged with each other by gears, the edge of the small gear turnplate is connected with the lower string cable of the beam string, the lower string cable of the beam string enwinds the small gear turnplate by 1 / 4 circle and is fixed, the center of the large gear turnplate is connected with the pedestal by the cable, the edge of the large gear turnplate stretches out of the cable to hang the heavy object, the cable enwinds the large gear turnplate by 1 / 4 circle and is fixed. The load-relieving beam string structure has strong disaster resistance, high safety performance and excellent stress performance and the performance of the high-strength material can be fully exerted.

Description

technical field [0001] The invention relates to a large-span prestressed steel structure technology mainly used in the field of building structures, in particular to a tension string beam structure with load relaxation function and an implementation method. Background technique [0002] The Zhangxian beam structure is a large-span space structure formally proposed by Professor M. Saitoh of Nihon University and developed rapidly in the past two decades. It is to make the struts generate upward component force by stretching the high-strength curved cables of the lower chord, causing the upper chord members to produce internal forces and displacements opposite to those under the external vertical load, improving the mechanical performance of the structure and reducing the deformation of the structure . The Zhangxian beam structure has been widely used all over the world. In my country, the Shanghai Pudong International Airport terminal building, the Guangzhou International Con...

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Problems solved by technology

Although many scholars have conducted in-depth research on load mitigation systems, so far there are still very few load mitigation systems with practical value. On the one hand, it is difficult to construct simple and efficient load mitigation devices; The relaxation system needs to release the displacement of the structure to ensure that the stress of the component does not exceed the allowable stress, so it must be combined with a flexible structure, and the engineering application background has limitations

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