青岛加洲国际客运中心项目加固改造设计

Reinforcement and reconstruction design of Qingdao Jiazhou International Passenger Transport Center

青岛加洲国际客运中心项目为A级高度大底盘双塔楼框架-核心筒结构,主体完工后成为烂尾楼。现由于建筑功能改变及立面调整,对其进行了外扩、增层、拔柱、开洞、补洞等一系列改动。由于原设计整体计算参数有一定富余,故后续设计使用年限取50年,按现行规范进行加固改造设计。设计中充分发掘已有结构潜力,尽量避免梁板加固;采用钢箍板加固底部暗柱以保证加固后的底部加强区满足现行规范要求;通过增设钢斜撑形成平面桁架结构,从而实现1层大堂拔柱;合理设计增层生柱及新增悬挑梁,避免了过量植筋对原结构的损伤。通过采取以上措施,较好地实现了建筑功能的改变。

Qingdao Jiazhou International Passenger Transport Center with A-level height became a half-baked building after completion of main structure. Frame-corewall structural system is adopted in this twin towers with large chassis. Due to architectural function modification and facade adjustment, a series of changes were made, including annex expansion, adding stories, pulling up columns, holing and filling holes. Because there is certain surplus in whole calculating parameters of original design, subsequent service life was designed to 50 years, and current codes were used for reinforcement and reconstruction design. Existing structural potential was fully excavated in design in order to avoid reinforcement of beams and plates as far as possible. To meet requirements of current codes on bottom reinforcing area, hooped steel plates were used in reinforcement of bottom embedded columns. Through adding steel diagonal bracings to form plane truss structure, columns of first floor lobby were successfully pulled up. By rational design of adding stories, newly added columns and cantilever beams, damage to original structures caused by excessive planted bars was avoided. The modification of architectural functions were satisfactorily realized through above methods.