Morphological analysis inverse iteration method for determining space structural lofting states of cable-strut-beam system

A technology of spatial structure and morphological analysis, applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems affecting the realization results of the design state

Inactive Publication Date: 2012-08-01
SOUTHEAST UNIV
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Problems solved by technology

However, the cable-strut-beam structure needs to go through a series of construction procedures (including: te

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  • Morphological analysis inverse iteration method for determining space structural lofting states of cable-strut-beam system
  • Morphological analysis inverse iteration method for determining space structural lofting states of cable-strut-beam system
  • Morphological analysis inverse iteration method for determining space structural lofting states of cable-strut-beam system

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Embodiment Construction

[0045] The present invention will be described in detail below in conjunction with the accompanying drawings. The flow chart of the inverse iterative method of form analysis considering the impact of the construction process on the cable-strut-beam system structure of the present invention is as follows figure 1 shown.

[0046] The detailed steps of the present invention are as follows:

[0047] 1) Analysis preparation: According to the design drawing and scheme description of the cable-strut-beam system structure, specify the node coordinate {D} of the design state of the cable-strut-beam system structure T , the target prestress in the design state {P} T , the proposed construction process plan, constraints and material parameters. Determine the specific construction process (one final plan or several alternative plans) according to the construction plan description, including: support system setting, tensioning sequence and tensioning method, etc. Set the termination ju...

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Abstract

The invention provides a morphological analysis inverse iteration method for determining space structural lofting states of a cable-strut-beam system. The method includes: using a nonlinear finite element inverse iteration method with construction process considered, using an inactivating-activating unit method to positively simulate construction process influences based on assumption of the lofting similar state, using a morphological compensation method to inversely correct a lofting state geometrical configuration and pretension scheme, gradually astringing a positive tension analysis result of a lofting similar state to a preset design state through positive-inverse loop iteration, and finally obtaining a precise lofting state geometrical configuration and pretension control scheme.

Description

technical field [0001] The invention belongs to the field of numerical simulation analysis for the design and construction of cable-strut-beam structures, and relates to a method for determining cable-strut-beam structures (such as string trusses, cable-supported reticulated shells, and cable trusses) using the nonlinear finite element inverse iteration method. Methods for lofted state (zero state) geometry and pretension control schemes. Background technique [0002] The cable-strut-beam system is a structural system composed of three structural elements: cable, compression bar and beam. It is a new type of space steel structure system. It has the advantages of novel structural form, large spanning capacity, and excellent mechanical performance. In recent years, it has been more and more used in public buildings such as stadiums, exhibition centers and waiting (machine) halls. [0003] Compared with flexible tension systems such as cable domes or cable nets, the cable-stru...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 周臻冯玉龙孟少平吴京王永泉
Owner SOUTHEAST UNIV
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