摘要
广交会展馆四期扩建工程项目包含展厅及其他功能建筑单体。其中,展厅设缝分为四个分区结构单体,各单体结构平面尺寸均为207m×90m,地上2层、地下1层,主体结构采用钢筋混凝土框架结构,屋盖采用带预应力的倒三角形立体桁架。展厅与地铁28号线隧道、市政隧道(双塔路隧道、会展西路隧道)相互交叉重叠。综合分析地铁线隧道、双塔路隧道多重避让条件、与展厅相对位置关系以及展厅上部使用荷载大等因素,提出交叉重叠区域共建展厅转换层及双塔路隧道结构方案,共建区横跨地铁线隧道以转换展厅上部框架柱。通过对转换层不同结构类型、不同梁截面形式进行比较,以确定最优选型方案,并对整体结构及关键节点进行分析。提出隧道施工盖挖逆作法,针对传统中间桩柱节点存在的弊端,提出利于现场施工、质量保障的改进方案。
The part IV expansion project of Canton Fair Complex includes exhibition hall and other functional building units.Among them,the exhibition hall is divided into four structural units,each with a plan size of 207m×90m,with 2 floors above ground and 1 floor underground.The main structure adopts reinforced concrete frame structure,and the roof adopts prestressed inverted triangular three-dimensional truss.The exhibition hall intersects and overlaps with the tunnel of Metro Line 28 and the municipal tunnel(Shuangta Road Tunnel,Exhibition West Road Tunnel).Based on a comprehensive analysis of the multiple avoidance conditions of the subway line tunnel and the Shuangta Road Tunnel,and the relative position relationship with the exhibition hall,and the large usage load on the upper part of the exhibition hall,a structural plan for the co construction of the transfer layer and the Shuangta Road Tunnel in the overlapping area was proposed.The transfer layer spans the subway line tunnel to transfer the upper frame columns of the exhibition hall.By comparing different structural types and beam cross-sectional forms of the transfer layer,the optimal comprehensive plan was determined,and the overall structure and key nodes were analyzed.Cover excavation reverse method for tunnel construction was proposed,and improvement plans that are conducive to on-site construction and quality assurance to address the shortcomings of traditional intermediate pile column nodes were proposed.
作者
郭伟刚
韦宏
牛喜山
罗志锋
陈宇菲
伍俊霖
李重阳
GUO Weigang;WEI Hong;NIU Xishan;LUO Zhifeng;CHEN Yufei;WU Junlin;LI Chongyang(Architectural Design&Research Institute of SCUT Co.,Ltd.,Guangzhou 510641,China)
出处
《建筑结构》
北大核心
2024年第15期101-107,共7页
Building Structure
关键词
广交会展馆
共建区设计
转换层
结构选型
中间桩柱节点
盖挖逆作法
Canton Fair Complex
design of co built area
transfer layer
structural selection
intermediate pile column
