金华市体育场网架支墩设计与施工

金华市体育场采用多点支撑与前端大拱相结合的形式,两侧落地处通过设置大体积混凝土墩与网壳结构连接。网架支墩为箱形结构,网架的复杂受力传到支墩。为了确保支墩的受力稳定和造价控制,设计与施工时采取了多项新技术的综合应用,如深基坑支护、抗拔抗剪锚杆、大体积混凝土等。其中边坡支护采用放坡加土钉支护,支墩内部填土和蓄水外翼底板用毛石混凝土压重,确保支墩整体和局部受力都满足设计强度及刚度要求。

Design and Construction of Space Truss Buttress in Jinhua Stadium

The space truss of Jinhua stadium adopted multi-point support,which was combined with a large arch in the front.The landing foots of the arch were connected to the space truss by seting mass concrete buttress.The buttress was a box-shaped structure that undertook the complex forces transferred from the space truss.In order to assure the structural stability and to control cost,a number of new technologies were used during design and construction,such as deep foundation excavation supports,anti-pulling and anti-shearing rock bolts,mass concrete,etc.For the deep foundation excavation,slopes were used combined with soil nail supports.Rubble concrete was used to provide balance weight to the buttress filling and the water storage wing floor.These methods assure that the structure satisfies both overall and local strength and stiffness requirements.