摘要
游泳馆主体结构为钢筋混凝土框架结构,屋盖为张弦结构与网壳结构的混合体系.通过屋盖在规范风荷载与风洞试验风荷载下竖向位移与构件应力比较确定了风荷载设计取值.索在零状态、初始态下的变形确定了索初始预张力,并查看荷载态下的位移满足规范限值.比赛池采用无梁楼盖,相对于传统梁板式楼盖能够增加池下净高.外圈支撑屋盖斜柱在柱顶环梁顶部与底部弯矩的比较揭示了环梁能有效改善柱顶部弯矩.屋盖重力沿屋面斜向的分力由张弦梁支座抵抗,沿屋盖坡向越到下部力的累加越大,通过支座根部设置斜撑杆,减少了销轴支座平面外力.大跨度张弦屋盖变形较大,系杆通过销轴转动连接解决了与网壳屋盖变形不协调的问题.
The main structure of the natatorium is a reinforced concrete frame structure,and the roof is a hybrid system of string structure and reticulated shell structure.The design value of wind load is determined by comparing the vertical displacement and component stress of roof under the wind load of code and wind tunnel test.The initial pretension of the cable is determined by the deformation of the cable under zero state and initial state,and the displacement under load state is checked to meet the limit value of the specification.The use of beamless floor in the competition pool can increase the clear height under the pool compared with the traditional beam slab floor.The comparison between the top and bottom bending moment of the ring beam at the top of the column and the bottom bending moment of the inclined column of the outer ring braced roof reveals that the ring beam can effectively improve the top bending moment of the column.The component force of roof gravity along the inclined direction of the roof is resisted by the beam string support.The accumulation of the force along the slope direction of the roof is greater as it goes down.The diagonal brace is set at the root of the support to reduce the external force of the pin shaft support.The deformation of large-span truss string roof is large,and the tie bar is connected through pin rotation to solve the problem of incongruity with the deformation of reticulated shell roof.
作者
尹述荣
吴飞
李治
涂建
曹凯
YIN Shu-rong;WU Fei;LI Zhi;TU Jian;CAO Kai(Citic General Institute of Architectural Design and Research Co.,Ltd.,Wuhan 430014,China;Wuhan Huaxia Institute of Technology,Wuhan 430223,China)
出处
《空间结构》
CSCD
北大核心
2023年第3期59-67,共9页
Spatial Structures
关键词
游泳馆
风荷载设计取值
索初始预张力
无梁楼盖与梁板式楼盖
张弦梁结构
swimming pool
design value of wind load
initial pretension of cable
beamless floor and beam slab floor
beam string structure
