Multi-objective equivalent static wind load calculation method and equipment for long-span roof structures

Abstract

The invention is applicable to the technical field of static equivalent analysis of wind-induced dynamic effects on long-span roof structures, and provides a multi-objective equivalent static wind load calculation method and equipment for long-span roof structures. The method includes: Multi-group single-objective equivalent static wind loads of the roof structure, calculate the static response of each node of the long-span roof structure under the action of each group of single-objective equivalent static wind load, and according to the static response of each node, calculate The energy change value on each node caused by the static response of each node, according to the energy change value on each node, calculate the energy change ratio of each node under the action of the equivalent static wind load of all groups of single targets, as The energy change ratio corresponding to each node is used as the combination coefficient, and each group of single-objective equivalent static wind loads is combined to obtain the multi-objective equivalent static wind load of the long-span roof structure. It can take into account multiple response control points and avoid the occurrence of local singular load values. The physical meaning is clear and it is convenient for engineering applications.

Description

technical field [0001] The invention belongs to the technical field of static equivalent analysis of wind-induced dynamic effects on long-span roof structures, and in particular relates to a multi-objective equivalent static wind load calculation method and equipment for long-span roof structures. Background technique [0002] With the continuous development of long-span roof structures in the direction of light weight, longer length, and more complex shapes, the structural flexibility becomes larger, the natural vibration frequency becomes lower, and the distribution is denser, which in turn makes the long-span roof structure less sensitive to wind loads. The sensitivity is greatly enhanced, and multi-order modes need to be considered in the calculation of wind-induced response. [0003] During the process of structural vibration, due to a certain phase difference in the response of nodes at different positions, there will be multiple response control points correspondingly...

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Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a multi-objective equivalent static wind load calculation method and equipment for long-span roof structures, aiming at solving the multi-objective equivalent static wind load of long-span roof structures in the prior art The calculation method has no clear physical meaning when taking into account the multi-objective equivalent, and the problem of local singular values ​​cannot be avoided

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