医院门诊大楼大跨悬挑钢结构雨棚设计方案优化  

The Optimization of Design Scheme for Large-Span Cantilevered Steel Structure Canopy in Hospital Outpatient Building

作　　者：段文振 龚 付思程 夏清泉 Duan Wenzhen;Gong Yan;Fu Sicheng;Xia Qingquan

机构地区：[1]中铁七局集团有限公司第二工程有限公司 [2]华东交通大学土木建筑学院

出　　处：《城市建筑》2024年第14期156-158,共3页Urbanism and Architecture

基　　金：国家自然科学基金项目“基于分布式宏应变影响包络线的铁路桥梁刚度快速评估方法研究”(51808219)。

摘　　要：为了保证医院门诊大楼的悬挑雨棚的净空要求,需采用无支撑悬挑的雨棚设计方案。文章以长春市妇产医院门急诊医技楼超8m大跨雨棚为背景,根据实际施工条件,建立了三维空间有限元分析模型,考虑风荷载与自重荷载组合等不利工况,根据结构内力与变形,对原有的钢结构雨棚结构设计进行了优化。首先分析了原有下部斜撑杆设计方法的内力状况与变形,提出了一种既可满足设计规范要求,也可满足下部无斜撑杆的优化设计方案,满足了医院门诊大楼悬挑雨棚对下部净空的要求。本优化方案能为同类别的大跨雨棚设计提供借鉴与参考。In order to ensure the clearance requirements of the cantilevered canopy in the hospital outpatient building,a design scheme of unsupported cantilevered canopy needs to be adopted.This paper takes the large-span canopy of the outpatient medical technology building of Changchun Obstetrics-Gynecology Hospital,which is over 8 meters long,as the background.Based on the actual construction situation,a three-dimensional finite element analysis model is established.Considering the unfavorable conditions of combining wind load and self-weight load,the structural design of the original steel canopy was optimized based on the internal forces and deformations of the structure.Firstly,the internal force and deformation of the original design method of the lower diagonal brace are analyzed,and an optimized design scheme that can meet the requirements of the design specification and the lower part without slant support is proposed,which meets the requirements of the out-patient building's overhanging canopy for the lower clearance.This optimization scheme can provide a reference for the design of similar large-span canopy.

关 键 词：悬挑雨棚 方案优化 钢结构 风荷载 

分 类 号：TU391[建筑科学—结构工程]