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Method for regulating internal force of overhanging steel structure root member

A technology for steel structures and components, applied in special structures, building components, etc., can solve problems such as stress concentration, achieve the effect of reducing the peak value of internal force, reducing internal force, and increasing project cost

Active Publication Date: 2013-08-28
CHINA AVIATION PLANNING & DESIGN INST GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the design and construction process of the existing multi-layer cantilevered steel structure, the present invention provides an effective and applicable method of combining design and construction, which effectively solves the stress concentration problem of the root components of the multi-layered cantilevered steel structure, and It has been applied and verified in the design and construction of a multi-storey cantilevered steel structure project

Method used

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  • Method for regulating internal force of overhanging steel structure root member
  • Method for regulating internal force of overhanging steel structure root member
  • Method for regulating internal force of overhanging steel structure root member

Examples

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Embodiment approach 1

[0044] Take a central multi-storey cantilevered steel structure as an example:

[0045] (1) The engineering example involved in the present invention has 3 types of cantilevered trusses with a total of 20 trusses, including 8 trusses in total for truss A, 8 trusses in total for truss B, and 4 trusses in total for truss C. Each truss cantilever has different lengths and vertical The load-bearing stiffness is different. Truss A has the highest stiffness and shares the most internal force. The stress at the bottom chord root of the cantilever truss cannot meet the design requirements only by the conventional method of increasing the section. The rods 5 and 7 in the truss A are selected as the post-installed rods of the present invention.

[0046] (2) Carry out construction simulation analysis on engineering examples, temporary support unloading devices 1, 2, and 3 are unloaded year-on-year, and the unloading is carried out in 4 steps.

[0047] (3) The installation timing of memb...

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Abstract

The invention relates to a method for regulating internal force of an overhanging steel structure root member, belonging to the structure engineering field. The method is to install the overhanging steel structure root member after partly or completely unloading a temporary support, the internal force of the structure is reassigned in the unloading process, the key member internal force is optimized, the problem of stress concentration of the overhanging steel structure root member is effectively solved. The design construction method can obtain good effect in the design and construction of the multi-layer overhanging steel structure.

Description

technical field [0001] The invention relates to the field of civil engineering design and construction, in particular to a design and construction method of a multi-layer cantilevered steel structure. Multi-layer cantilevered steel structure: refers to a steel structure system with more than two cantilevered structural layers, and the cantilevered structural layers have load-bearing functions. Background technique [0002] At present, urban land is becoming more and more scarce, and urban ground space is becoming more and more crowded. In order to meet people's ground activities and provide sufficient ground space, architectural design pays more and more attention to the openness of the lower space, so that some buildings do not fall to the ground. At this time, in order to ensure the requirements of building type selection, a cantilevered steel structure system is adopted. Multi-storey cantilevered structures generally use cantilevered trusses as the superstructure conver...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/34
Inventor 王树王明珠张国军黄季阳葛家琪
Owner CHINA AVIATION PLANNING & DESIGN INST GRP
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