大跨度张弦桁架雨棚结构等效静风荷载数值模拟

上海交通大学学报（自然版） ›› 2016, Vol. 50 ›› Issue (01): 59-64.

大跨度张弦桁架雨棚结构等效静风荷载数值模拟

乔帅斌1，汪汛1，王子通1，周岱1,2

（1. 上海交通大学船舶海洋与建筑工程学院，上海 200240；2. 高新船舶与深海开发装备协同创新中心，上海 200240）

收稿日期:2015-01-07 出版日期:2016-01-29 发布日期:2016-01-29
基金资助:
国家自然科学基金（11172174；51278297）资助项目，高等学校博士学科点专项科研基金（20130073110096）和上海市领军人才计划资助项目

Equivalent Static Wind Load of a LongSpan Truss String Structure

QIAO Shuaibin1,WANG Xun1,WANG Zitong1,ZHOU Dai1,2

(1. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Collaborative Innovation Center for Advanced Ship and DeepSea Exploration, Shanghai 200240, China)

Received:2015-01-07 Online:2016-01-29 Published:2016-01-29

摘要/Abstract

摘要： 摘要：基于谐波叠加法模拟生成风速时程并转化为风压时程；采用ANSYS建立结构有限元模型，施加模拟所得的风压时程，计算分析结构风致动力效应；给出风振动力放大因子定义，将其与基于特定时刻的结构瞬时风压分布相结合，进而提出等效静风荷载新内涵.运用数值模拟分析，给出了基于结构立柱基底竖向反力和桁架跨间位移的等效静风荷载.

关键词: 张弦桁架雨棚结构, 风速时程模拟, 动力放大因子, 等效静风荷载

Abstract: Abstract： The timehistory of wind velocity was simulated by using the harmonic superposition method, which was then turned into pressure timehistory of wind. By using the ANSYS software, the FEM model for the structural system was constructed, and the structural windinduced vibration responses under different incoming winds were calculated by using the simulated wind pressure timehistory. Moreover, a novel equivalent static wind load was established, where the windinduced dynamic amplification factor was combined with the instantaneous wind pressure distribution at a specific time. Finally, from numerical examples, the equivalent static wind load distribution based on the minimum vertical reaction forces and the maximum nodal displacement of the truss were obtained. Key words： longspan truss string structure; wind velocity simulation; windinduced dynamic

中图分类号:

乔帅斌1，汪汛1，王子通1，周岱1,2. 大跨度张弦桁架雨棚结构等效静风荷载数值模拟[J]. 上海交通大学学报（自然版）, 2016, 50(01): 59-64.

QIAO Shuaibin1,WANG Xun1,WANG Zitong1,ZHOU Dai1,2. Equivalent Static Wind Load of a LongSpan Truss String Structure[J]. Journal of Shanghai Jiaotong University, 2016, 50(01): 59-64.

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